6-K 1 cig20251024_6k.htm 6-K

United States

Securities and exchange commission
washington, d.c. 20549

FORM 6-K

report of foreign private issuer
pursuant to rule 13a-16 or 15d-16 of
the securities exchange act of 1934

For the month of October 2025

Commission File Number 1-15224

Energy Company of Minas Gerais

(Translation of Registrant’s Name into English)

Avenida Barbacena, 1200

30190-131 Belo Horizonte, Minas Gerais, Brazil

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F a Form 40-F ___

Index

Item Description of Items

| 1. | Material Fact dated August 1, 2025 – Cemig wins CCEE auction for GSF credits for concession extensions

| 2. | Material Fact dated August 1, 2025 – Official Letter Received from the Controlling Shareholder

| 3. | Earnings Release – 2Q2025

| 4. | Notice to Shareholders dated September 23, 2025 – Declaration of Interest on Equity

| 5. | Notice to the Market dated October 16, 2025 – Conclusion of the Onerous Transfer of Four Small Power Plants

| 6. | 2Q Interim Financial Information

Forward-Looking Statements

This report contains statements about expected future events and financial results that are forward-looking and subject to risks and uncertainties. Actual results could differ materially from those predicted in such forward-looking statements. Factors which may cause actual results to differ materially from those discussed herein include those risk factors set forth in our most recent Annual Report on Form 20-F filed with the Securities and Exchange Commission. CEMIG undertakes no obligation to revise these forward-looking statements to reflect events or circumstances after the date hereof, and claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG

By: /s/ Andrea Marques de Almeida . Name: Andrea Marques de Almeida

Title: Vice President of Finance and Investor Relations

Date: October 27, 2025

| 1. | Material Fact dated August 1, 2025 – Cemig wins CCEE auction for GSF credits for concession extensions

COMPANHIA ENERGÉTICA DE MINAS GERAIS - CEMIG

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 17.155.730/0001-64

COMPANY REGISTRY (NIRE): 31300040127

CEMIG GERAÇÃO E TRANSMISSÃO S.A.

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 06.981.176/0001-58

Company Registry (NIRE): 31300020550

MATERIAL FACT

Cemig wins CCEE auction for GSF credits for concession extensions

COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG (“CEMIG” or “Company”), a publicly-held company with shares traded on the stock exchanges of São Paulo and New York, and CEMIG GERAÇÃO E TRANSMISSÃO S.A. (“Cemig GT”), a publicly-held company and the wholly-owned subsidiary of CEMIG, hereby inform its shareholders and the market in general, under CVM Resolution 44/2021, that Cemig GT, Cemig PCH S.A., and the Queimado Consortium have won the auction of Generation Scaling Factor (“GSF”) credits for concession extensions, held today by the Electric Energy Trading Chamber (“CCEE”).

As a result, the concessions for the Queimado (7 years), Pai Joaquim (7 years), and Irapé (3 years) hydroelectric power plants will be extended, with a total disbursement of approximately R$200 million.

CEMIG reaffirms its commitment to keeping shareholders and the market in general informed about this matter, following the rules issued by the CVM and the legislation in force.

Belo Horizonte, August 01, 2025.

Andrea Marques de Almeida

Vice President of Finance and Investor Relations

| 2. | Material Fact dated August 1, 2025 – Official Letter Received from the Controlling Shareholder

COMPANHIA ENERGÉTICA DE MINAS GERAIS - CEMIG

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 17.155.730/0001-64

Company Registry (NIRE): 31300040127

MATERIAL FACT

Official Letter Received from the Controlling Shareholder

COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG (“CEMIG” or “Company”), a publicly-held company with shares traded on the stock exchanges of São Paulo and New York, under CVM Resolution 4/2021, hereby informs its shareholders and the market in general that it has received Official Letter SEDE/ASMERC 49/2025 from the State of Minas Gerais, the Company's controlling shareholder, informing that it authorized the Brazilian Development Bank (BNDES) to initiate a Request for Information (RFI), a preliminary and non-binding stage aimed at identifying specialized technical consultants in the market interested in supporting the preparation of CEMIG’s economic and financial valuation report, for the purpose of debt amortization under the Full Debt Repayment Program for States (Propag).

CEMIG reaffirms its commitment to keeping shareholders and the market in general informed about this matter, following the rules issued by the CVM and the legislation in force.

Belo Horizonte, August 01, 2025.

Andrea Marques de Almeida

Vice President of Finance and Investor Relations

| 3. | Earnings Release – 2Q2025

CONTENTS

Ebitda and NET profit by company, 2Q25 | 5
Profit and loss accounts | 6
RESULTS BY BUSINESS SEGMENT | 7
CONSOLIDATED ELECTRICITY MARKET | 8
PERFORMANCE BY COMPANY | 9
Cemig D | 9
Billed electricity market | 9
Sources and uses of electricity – MWh | 10
Client base | 10
Performance by sector | 10
Direct Action of Unconstitutionality No. 7,324 – PIS/Cofins Credits on ICMS | 11
The 2025 Annual Tariff Adjustment | 11
Five-year Tariff Reviews compared | 12
Opex and Ebitda: realized x Regulatory | 12
Indicators of supply quality – DEC and FEC | 13
Combating default | 13
Energy losses | 14
Cemig GT and Cemig Holding Company | 15
Electricity market | 15
Sources and uses of electricity | 15
Gasmig | 16
Consolidated results | 17
Net profit | 17
Operational revenue | 18
Operational costs and expenses | 20
Finance income and expenses | 23
Gain (loss) in non-consolidated investees (Equity income) | 24
CONSOLIDATED EBITDA (IFRS, and Adjusted) | 25
Ebitda of Cemig D | 26
Cemig GT – Ebitda | 27
Investments | 28
Debt | 29
Cemig’s long-term ratings | 31
ESG – Report on performance | 32
Performance of Cemig’s shares | 35
Plant | 36
RAP: July 2025–June 2026 cycle | 37
Transmission Regulatory Revenue and EBITDA | 38
Complementary information | 39
Cemig D | 39
Cemig GT | 41

4

Ebitda and NET profit by company, 2Q25

| 2Q25 | 2Q24 | Change % | 2Q25 | 2Q24 | Change % |  |
(R$ mn) | EBITDA (IFRS) | Adjusted Ebitda |  |
Cemig D | 1,210 | 1,329 | -9.0% | 1,214 | 872 | 39.2% |  |
Cemig GT | 404 | 641 | -37.0% | 602 | 639 | -5.8% |  |
Gasmig | 243 | 237 | 2.5% | 243 | 237 | 2.5% |  |
Consolidated | 2,009 | 2,371 | -15.3% | 2,212 | 1,916 | 15.4% |  |
New replacement value (VNR) | 27 | 22 | 22.7% | 27 | 22 | 22.7% |  |
Equity income (Gain (loss) in non-consolidated investees) | 77 | 39 | 97.4% | 77 | 39 | 97.4% |  |
Regulatory difference, transmission, T | 297 | 56 | 430.4% | 99 | 78 | 26.9% |  |
Consolidated, less VNR and equity income, plus difference IFRS/Regulatory Transmission Ebitda | 2,202 | 2,366 | -6.9% | 2,207 | 1,933 | 14.2% |  |

| 2Q25 | 2Q24 | Change % | 2Q25 | 2Q24 | Change % |  |
(R$ mn) | Profit (IFRS) | Adjusted profit |  |
Cemig D | 551 | 1,060 | -48.0% | 554 | 434 | 27.6% |  |
Cemig GT | 342 | 328 | 4.3% | 472 | 409 | 15.4% |  |
Gasmig | 151 | 138 | 9.4% | 151 | 138 | 9.4% |  |
Consolidated | 1,188 | 1,689 | -29.7% | 1,322 | 1,134 | 16.6% |  |

5

Profit and loss accounts

| 2Q25 | 2Q24 | Change, %
PROFIT AND LOSS ACCOUNTS (R$ ’000) |  |  |
NET REVENUE | 10,786,295 | 9,435,991 | 14.3%
COSTS |  |  |
Cost of electricity and gas | -5,809,115 | -5,019,191 | 15.7%
Infrastructure construction costs | -1,463,371 | -1,226,933 | 19.3%
Cost of operation | -1,363,676 | -686,180 | 98.7%
Total costs | -8,636,162 | -6,932,304 | 24.6%
GROSS PROFIT | 2,150,133 | 2,503,687 | -14.1%
EXPENSES |  |  |
Client default provision | -3,098 | -77,300 | -96.0%
General and administrative expenses | -177,602 | -205,700 | -13.7%
Other expenses | -405,801 | -226,594 | 79.1%
Total expenses | -586,501 | -509,594 | 15.1%
Share of gain (loss) in non-consolidated investees | 77,418 | 38,711 | 100.0%
Profit before Finance income (expenses) and Taxes on profit | 1,641,050 | 2,032,804 | -19.3%
Finance income | 302,444 | 725,474 | -58.3%
Finance expenses | -565,404 | -607,355 | -6.9%
Net finance income (expense) | -262,960 | 118,119 | -322.6%
Profit before income tax and Social Contribution tax | 1,378,090 | 2,150,923 | -35.9%
Income tax and Social Contribution tax | -249,538 | -149,309 | 67.1%
Deferred income tax and Social Contribution tax | 59,729 | -313,028 | -119.1%
Total income tax and Social Contribution tax, incl. deferred | -189,809 | -462,337 | -58.9%
NET PROFIT FOR THE PERIOD | 1,188,281 | 1,688,586 | -29.6%

6

Results by business segment

INFORMATION BY SEGMENT ON JUNE 30, 2025
| Electricity | Gas | Equity interests | Total | Eliminations | Consolidated
| Generation | Transmission | Trading | Distribution
NET REVENUE | 813,582 | 383,793 | 1,976,069 | 7,269,938 | 865,321 | 32,704 | 11,341,407 | -555,112 | 10,786,295
Inter-segment | 401,582 | 143,006 | 0 | 10,524 | - | - | 555,112 | -555,112 | -
External | 412,000 | 240,787 | 1,976,069 | 7,259,414 | 865,321 | 32,704 | 10,786,295 | - | 10,786,295
COST OF ELECTRICITY AND GAS | -147,322 | -115 | -1,950,946 | -3,772,388 | -485,097 | 604 | -6,355,264 | 546,149 | -5,809,115
Inter-segment | -9,352 | -40 | -378,529 | -157,538 | - | -690 | -546,149 | 546,149 | -
External | -137,970 | -75 | -1,572,417 | -3,614,850 | -485,097 | 1,294 | -5,809,115 | - | -5,809,115
COSTS AND EXPENSES |  |  |  |  |  |  |  |  |
People | -38,924 | -41,301 | -10,963 | -264,524 | -18,197 | -14,480 | -388,389 | - | -388,389
Employees’ and managers’ profit shares | -4,253 | -4,483 | -2,949 | -26,214 | -2,108 | -6,017 | -46,024 | - | -46,024
Post-employment liabilities | -11,460 | -7,082 | -1,623 | -70,953 | - | -18,206 | -109,324 | - | -109,324
Materials, Outsourced services and Other expenses, net | -59,877 | -221,747 | -8,007 | -575,743 | -26,744 | -8,042 | -900,160 | 8,963 | -891,197
Inter-segment | -7,175 | -713 | - | -1,023 | -50 | -2 | -8,963 | 8,963 | -
External | -52,702 | -221,034 | -8,007 | -574,720 | -26,694 | -8,040 | -891,197 | - | -891,197
Depreciation and amortization | -78,044 | -4,652 | -3 | -254,372 | -25,438 | -5,884 | -368,393 | - | -368,393
Operating provisions / adjustments | -7,811 | -1,816 | -3,179 | -118,655 | 3,058 | -18,447 | -146,850 | - | -146,850
Infrastructure construction costs | - | -138,924 | - | -1,231,704 | -92,743 | - | -1,463,371 | - | -1,463,371
Total cost of operation | -200,369 | -420,005 | -26,724 | -2,542,165 | -162,172 | -71,076 | -3,422,511 | 8,963 | -3,413,548
COSTS AND EXPENSES | -347,691 | -420,120 | -1,977,670 | -6,314,553 | -647,269 | -70,472 | -9,777,775 | 555,112 | -9,222,663
Share of gain (loss) in non-consolidated investees | - | - | - | - | - | 77,418 | 77,418 | - | 77,418
PROFIT BEFORE FINANCE INCOME (EXPENSES) AND TAXES ON PROFIT | 465,891 | -36,327 | -1,601 | 955,385 | 218,052 | 39,650 | 1,641,050 | - | 1,641,050
Net finance income (expenses) | 15,614 | -3,207 | 4,121 | -257,444 | 4,533 | -26,577 | -262,960 | - | -262,960
PROFIT (LOSS) BEFORE TAXES ON PROFIT | 481,505 | -39,534 | 2,520 | 697,941 | 222,585 | 13,073 | 1,378,090 | - | 1,378,090
Income tax and Social Contribution tax | -31,781 | 36,693 | 3,961 | -147,391 | -71,765 | 20,474 | -189,809 | - | -189,809
NET PROFIT FOR THE PERIOD | 449,724 | -2,841 | 6,481 | 550,550 | 150,820 | 33,547 | 1,188,281 | - | 1,188,281

7

CONSOLIDATED ELECTRICITY MARKET

Cemig’s consolidated electricity market

In June 2025 the Cemig Group invoiced approximately 9.51 million clients – an increase of approximately 181,000 clients, or 1.9%, in its consumer base since the end of June 2024. Of this total number of consumers, 9,504,790 are final consumers, and/or represent Cemig’s own consumption; and 2,450 are other agents in the Brazilian electricity sector.

This chart shows the percentages of the Cemig Group’s sales to final consumers:

8

PERFORMANCE BY COMPANY

Cemig D

Billed electricity market

| 2Q25 | 2Q24 | Change %
Captive clients + Transmission for clients (MWh*) |  |  |
Residential | 3,170,399 | 3,150,675 | 0.6%
Industrial | 5,483,216 | 5,771,074 | –5.0%
Captive market | 179,077 | 278,451 | –35.7%
Transport | 5,304,139 | 5,492,623 | –3.4%
Commercial, services and Others | 1,521,025 | 1,622,287 | –6.2%
Captive market | 855,645 | 1,037,239 | –17.5%
Transport | 665,380 | 585,048 | 13.7%
Rural | 778,749 | 767,562 | 1.5%
Captive market | 745,410 | 752,773 | –1.0%
Transport | 33,339 | 14,789 | 125.4%
Public services | 792,114 | 831,774 | –4.8%
Captive market | 585,326 | 697,111 | –16.0%
Transport | 206,788 | 134,663 | 53.6%
Concession holders | 73,395 | 74,376 | –1.3%
Transport | 73,395 | 74,376 | –1.3%
Own consumption | 6,992 | 7,710 | –9.3%
Total | 11,825,890 | 12,225,458 | –3.3%
Total, captive market | 5,542,849 | 5,923,959 | –6.4%
Total, energy transported for Free Clients | 6,283,041 | 6,301,499 | –0.3%

* Excludes supply offset in Distributed Generation.

In 2Q25 electricity billed to captive clients, plus transport of energy for Free Clients and distributors, excluding supply offset in Distributed Generation, totaled 11,826 GWh – or 3.3% less than in 2Q24. This was mainly the result of lower consumption by industrial clients (–287.9 GWh or –5.0%), commercial clients (–101.3 GWh or –6.2%) and public services (–33.7 GWh or –4.8%). In turn this mainly reflected migration of clients to DG, and to the transmission network. At the same time, consumption by residential clients was +19.7 GWh (+0.6%) higher, and rural consumption was +11.2 GWh (+1.5%) higher.

The reduction of 3.3% in total energy distributed comprised a 6.4% decrease (–381.1 GWh) in consumption by the captive market, and a 0.3% reduction (–18.5 GWh) in use of the network by Free Clients. Taking offset DG energy into account, total distributed energy was 1.0% lower than in 2Q24.

9

Sources and uses of electricity – MWh

| 2Q25 | 2Q24 | Change %
Metered market – MWh |  |  |
Transported for distributors | 73,395 | 65,408 | 12.2%
Transported for Free Clients | 6,207,535 | 6,263,100 | –0.9%
Own load + Distributed generation | 8,792,162 | 8,891,020 | –1.1%
Consumption by captive market | 5,550,333 | 5,814,060 | –4.5%
Distributed Generation market | 1,505,218 | 1,487,050 | 1.2%
Losses in distribution network | 1,736,611 | 1,589,910 | 9.2%
Total volume carried | 15,073,092 | 15,219,528 | –1.0%

Client base

In June 2025 Cemig billed 9.49 million consumers, 1.9% more than in June 2024. Of this total, 5,543 were Free Clients using the distribution network of Cemig D.

| Jun. 2025 | Jun. 2024 | Change %
NUMBER OF CAPTIVE CLIENTS |  |  |
Residential | 8,072,997 | 7,872,637 | 2.5%
Industrial | 23,754 | 27,406 | –13.3%
Commercial, services and Others | 900,319 | 908,389 | –0.9%
Rural | 388,636 | 405,987 | –4.3%
Public authorities | 74,503 | 71,375 | 4.4%
Public lighting | 7,354 | 6,896 | 6.6%
Public services | 13,268 | 13,706 | –3.2%
Own consumption | 830 | 763 | 8.8%
Total, captive clients | 9,481,661 | 9,307,159 | 1.9%
NUMBER OF FREE CLIENTS |  |  |
Industrial | 2,290 | 1,390 | 64.7%
Commercial | 2,914 | 1,950 | 49.4%
Rural | 134 | 34 | 294.1%
Public authorities | 51 | 4 | 1175.0%
Public services | 146 | 37 | 294.6%
Concession holders | 8 | 7 | 14.3%
Total, Free Clients | 5,543 | 3,422 | 62.0%
Total, Captive market + Free Clients | 9,487,204 | 9,310,581 | 1.9%

Performance by sector

Industrial: Energy distributed to industrial clients was 5.0% lower than in 2Q24, and was 46.4% of Cemig D’s total distribution. The greater part was energy transported for industrial Free Clients (44.9%), which was 3.4% lower in volume than in 2Q25. Within this total, energy billed to captive industrial clients was 1.5% of the total distributed, and 35.7% less by volume than in 2Q24 – mainly due to migration of clients to the Free Market.

The reduction in consumption by industrial users reflects (i) migration of customers to the transmission network, and (ii) lower consumption, in particular by a few sectors: Ferro-alloys (down 9.3% YoY), Chemicals (down 19.2%) and Steel (down10.6%), while there was growth in consumption by Extractive Industries (+6.0%) and Foods and Beverages (+2.5%).

10

Residential consumption was 26.8% of the total energy distributed by Cemig D in the quarter, and 0.6% higher in total volume than in 2Q24. Average monthly consumption per consumer, at 130.9 kWh/month, was 1.9% lower than in 2Q24. On the other hand, the total number of residential clients increased by 2.6% year-on-year (+200,400 new clients).

Commerce and Services: Energy distributed to and for these consumers was 12.9% of the total distributed by Cemig D in 2Q25, and by volume 6.2% less than in 2Q24. The change has two components: a 17.5% reduction in the volume of energy billed to captive clients, and a 13.7% increase in the volume of energy transported for Free Clients. The lower figure for total consumption mainly reflects migration of clients to Distributed Generation.

Rural: Consumption by rural clients was 6.6% of the total energy distributed and was 1.5% higher by volume than in 2Q24. This mainly reflected (i) higher consumption for irrigation, and (ii) a reduction of 0.8% in the number of consumer units in this category.

Public services: consumed 6.7% of the energy distributed in 2Q25, and 4.8% less by volume than in 2Q24.

Direct Action of Unconstitutionality No. 7,324 – PIS/Cofins Credits on ICMS

On August 14, 2025, the Federal Supreme Court (STF) ruled on Direct Action of Unconstitutionality No. 7324, which challenges the constitutionality of Law No. 14,385/2022. This law addresses the reimbursement of taxes overpaid by electricity distribution companies to consumers. The Court confirmed the validity of the law, establishing that the excess amounts must be returned to consumers in the form of discounts on electricity bills. The Company is awaiting the publication of the ruling, at which point there will be sufficient elements to assess the potential accounting, financial, and operational impacts resulting from the decision.

More details at the following link: (Note to the financial statements (9) – Recoverable Taxes, from the 2022 Financial statements).

cemig-2022-12-31-r8frLRJW.pdf

The 2025 Annual Tariff Adjustment

The tariffs of Cemig D are adjusted in May each year; and every five years are subjected to a Periodic Tariff Review, also in May. The aim of the Annual Adjustment is to pass on changes in the costs defined as “non-manageable” in full, to the client, and provide inflation adjustment for the costs specified as “manageable” in the Tariff Review. Manageable costs are adjusted by the IPCA inflation index, less a factor known as the ‘X Factor’, designed to capture productivity, under a system using the price cap regulatory model.

On May 20, 2025 Aneel ratified Cemig D’s annual Tariff Adjustment, to be effective from May 28, 2025 to May 27, 2026. This resulted in an average increase, for consumers, of 7.78%. The average effect for low-voltage consumers was an increase of 7.03%, and for residential consumers, an increase of 6.86%. The component percentage of the increase corresponding to manageable costs (referred to as ‘Portion B’) was 1.36%. The increase relating to non-manageable costs (‘Portion A’ – comprising purchase of energy, transmission, sector charges and non-recoverable revenues) was 6.12%. The increase in the financial components of the tariff contributed 0.30 percentage points. The item with the greatest impact on the tariff increase was the sector charges, which contributed an effect of 4.63%, reflecting an increase in the CDE (the Energy Development Account).

Average effects of the Tariff Adjustment
High voltage – average | 9.45%
Low voltage – average | 7.03%
Average effect | 7.78%

See more details at this link:

https://www2.aneel.gov.br/aplicacoes/tarifa/arquivo/SEI_0111327_Nota_Tecnica_116_Cemig.pdf

11

Five-year Tariff Reviews compared

Comparison of the Tariff Reviews made in 2023 and in the previous cycle (2018):

Five-year Tariff Reviews | 2018 | 2023
Gross Remuneration Base R$ million | 20,490 | 25,587
Net Remuneration Base R$ million | 8,906 | 15,200
Average depreciation rate | 3.84% | 3.95%
WACC (after taxes) | 8.09% | 7.43%
Remuneration of ‘Special Obligations’ R$ mn | 149 | 272
CAIMI * R$ mn | 333 | 484
QRR ** (Depreciation calculation) R$ mn | 787 | 1007

* CAIMI: (Cobertura Anual de Instalações Móveis e Imóveis) – Annual support for facilities.

** QRR: ‘Regulatory Reintegration Quota’ – Gross base x annual depreciation rate.

See more details at this link:

https://www2.aneel.gov.br/aplicacoes/tarifa/arquivo/NT%2012%202023%20RTP%20Cemig.pdf

Opex and Ebitda: realized x Regulatory

(R$ mn)

Realized Opex and Ebitda were both better than regulatory levels in 1H25.

| Regulatory Ebitda is calculated by reference to: (i) remuneration of capital; (ii) the QRR quota (Gross base x annual depreciation rate); and (iii) a percentage of the Annual Cost of Mobile Facilities and Real Estate, published in Aneel Technical Notes at the times of Tariff Reviews and Adjustments.

12

Indicators of supply quality – DEC and FEC

In the 12 months to end-June 2025 Cemig’s Outage Duration indicator (DEC) was 9.76 hours, higher than the regulatory limit of 9.48 hours. The Company’s Outage Frequency indicator (FEC), at 5.37 per year for the 12 months, remained within the regulatory parameter of 5.83 per year.

Combating default

The Company has maintained a high level of collection actions, which have helped keep the Receivables Recovery Index high – it was 98.99% in June 2025.

New payment channels, and online negotiation, have helped to increase the proportion of client payments being made via digital channels (PIX instant payments, automatic debits, payments by card and app, etc.) – which were 67.5% of the total collected in 2Q25, or 0.44 percentage points higher than in 2Q24. A highlight is Brazil’s PIX instant payment system, the method most used by clients – which was used for 33.8 % of all client payments, providing savings of R$ 34.8 million in collection expenses since it was put in place in 2021.

13

Energy losses

Energy losses in the 12 months to end-June 2025, at 11.43%, were within the regulatory target level of 11.48%. As from the date of the tariff adjustment (May 28, 2025) Aneel Technical Note 53/2025 updated the method for calculation of non-technical losses to include not only billed amounts of energy but also the volume of Distributed Generation, thus widening the scope of the calculation of energy losses. This change led to an increase in tariff coverage for energy losses.

Highlights of our combat of energy losses in 1H25 include: approximately 177,000 inspections; replacement of more than 173,000 obsolete meters; replacement of 49,000 conventional meters by smart meters (bringing the total of installed smart meters to 419,000 since the project began in September 2021); and regularization of 4,300 clandestine connections made by families living in ‘invaded’ and low-income areas, through our Energia Legal program, which uses ‘bulletproofed’ networks (bringing the total of connections regularized since the start of the project in February 2023 to 27,100). Planned for 2025 are: 340,000 inspections; replacement of 425,000 obsolete meters; and regularization of 54,000 families in low-income communities (using ‘BT Zero’ and ‘Bulletproofed Meter Panel’ technologies).

14

Cemig GT and Cemig Holding Company

Electricity market

The total volume of electricity sold in 2Q25 by Cemig GT and by the holding company (‘Cemig H’), excluding sales on the Wholesale Power Exchange (CCEE), was 17.6% higher than in 2Q24. Cemig GT billed 6,352 GWh (including quota sales) in 2Q25, 31.1% more than in 2Q24.

The holding company reported sales of 4,891 GWh in 2Q25, 3.7% more than in 2Q24. The migration of purchase contracts from Cemig GT to the holding company began in 3Q21, and has continued gradually since then. It is now around 61%.

Of the total sold by the holding company and Cemig GT in 2Q25, sales in the ‘retail market’ in 2Q25 accounted for 343.4 GWh.

| 2Q25 | 2Q24 | Change %
Cemig GT – MWh
Free Clients | 3,625,816 | 2,930,479 | 23.7%
Industrial | 2,441,227 | 1,999,042 | 22.1%
Commercial | 1,152,685 | 917,519 | 25.6%
Rural | 27,707 | 12,000 | 130.9%
Public authorities | 4,197 | 1,918 | 118.8%
Free Market – Traders and Cooperatives | 1,574,194 | 774,876 | 103.2%
Quota supply | 565,513 | 560,620 | 0.9%
Regulated Market | 554,118 | 545,964 | 1.5%
Regulated Market – Cemig D | 32,580 | 32,617 | –0.1%
Total, Cemig GT | 6,352,221 | 4,844,556 | 31.1%
Cemig H – MWh |  |  |
Free Clients | 2,481,986 | 2,597,781 | –4.5%
Industrial | 1,978,731 | 2,090,040 | –5.3%
Commercial | 476,561 | 492,665 | –3.3%
Rural | 26,694 | 15,076 | 77.1%
Free Market – Traders and Cooperatives | 2,408,829 | 2,116,554 | 13.8%
Total Cemig H | 4,890,815 | 4,714,335 | 3.7%
Cemig GT + H | 11,243,037 | 9,558,891 | 17.6%

Sources and uses of electricity

15

Gasmig

Gasmig is the exclusive distributor of piped natural gas for the whole of the state of Minas Gerais. It supplies industrial, commercial and residential users, users of compressed natural gas and vehicle natural gas, and gas as fuel for thermoelectric generation plants. Its concession expires in January 2053. Cemig owns 99.57% of Gasmig.

Gasmig’s last Tariff Review was completed in April 2022. Highlights:

| § | The WACC adopted (real, after taxes) was reduced from 10.02% p.a. to 8.71% p.a.

| § | The Net Remuneration Base was increased significantly, to R$ 3.48 billion.

| § | The regulator recognized the cost of PMSO (Personnel, Materials, outsourced Services and Other expenses) in full.

Market (Volume in ’000 m3) | 2022 | 2023 | 2024 | 1H24 | 1H25 | Change, 1H24 –1H25
Automotive | 40,950 | 31,907 | 22,511 | 11,518 | 10,241 | –11.1%
Compressed vehicle natural gas | 364 | 541 | 630 | 263 | 259 | –1.5%
Industrial | 870,667 | 830,943 | 786,363 | 390,394 | 351,814 | –9.9%
Industrial compressed natural gas | 13,616 | 12,473 | 10,275 | 4,915 | 4,897 | –0.4%
Residential | 11,392 | 11,912 | 12,095 | 5,749 | 6,296 | 9.5%
Co–generation | 13,137 | 12,075 | 12,164 | 6,983 | 6,197 | –11.3%
Commercial | 23,114 | 21,964 | 23,203 | 11,085 | 11,637 | 5.0%
Subtotal – conventional gas | 973,240 | 921,815 | 867,241 | 430,907 | 391,341 | –9.2%
Thermal plants | 37,991 | – | – | – | – | –
Subtotal – gas sold – captive market | 1,011,231 | 921,815 | 867,241 | 430,907 | 391,341 | –9.2%
Industrial – Free Market | 87,133 | 92,362 | 97,302 | 45,903 | 99,966 | 117.8%
Industrial – Free Market | – | – | 10,421 | 5,491 | 4,730 | –13.9%
Thermal – Free Market | 7,119 | 19,050 | 58,046 | 11,304 | 34,067 | 201%
Total (captive market + Free Clients) | 1,105,483 | 1,033,227 | 1,033,010 | 493,605 | 530,104 | 7.4%

Ebitda (R$ ’000) | 2Q25 | 2Q24
Profit (loss) for the period | 150,821 | 137,823
Income tax and Social Contribution tax | 73,468 | 64,608
Net finance income (expenses) | –4,533 | 11,937
Depreciation and amortization | 23,734 | 22,381
Ebitda per CVM Resolution 156 | 243,490 | 236,749

The volume of gas sold to captive clients in 1H25 was 9.2% (39,500 m³) lower than in 1H24, while the volume distributed to industrial Free Clients and for thermoelectric generation was 121.3% (76,100 m³) higher, resulting in total volume 7.4% higher. Considering 2Q25, total volume was up 11.8% YoY, comprising volume sold to captive clients 11.5% (25,500 m³) lower and volume distributed in the free market 202.3% (54,600 m³) higher.

Gasmig’s Ebitda in 2Q25 was 2.8% higher than in 2Q24, reflecting the higher volume of gas distributed to the free industrial customers.

The total number of Gasmig’s clients increased by 6.2% from June 2024 to a total of 106,707 consumers in June 2025 – reflecting expansion of both the commercial and the residential client bases (total addition of 6,100 clients).

16

Consolidated results

Net profit

For 2Q25, Cemig reports net profit of R$ 1,188.4 million in 2Q25, which compares to net profit of R$ 1,688.6 million in 2Q24. Adjusted net profit for 2Q25 is R$ 1,322.3 million, compared to R$ 1,134 million in 2Q24. The main factors in this result were:

| § | A reduction in contractual assets, with effect of R$ 131.3 million in net profit, resulting from remeasurement of the ‘RBSE’ (national grid) component, due to the changes made by Aneel Ratifying Resolution 3,469/2025.

| § | Negative impact of R$ 46.0 million on profit in the Trading activity, due to the exposure of approximately 544 MWaverage to differences in spot prices between sub-markets, considering that a significant part of the energy purchased is in the Northeast, and a part of that energy is sold in the Southeast, Center-West and South markets. The average price difference in 2Q25 was more than R$ 60/MWh.

| § | There was a net gain of R$ 374.9 million from subsidies in Cemig D, arising from the difference between amounts foreseen and realized in the tariff cycle ended in May 2025, especially the discounts applied to incentive-bearing sources, and Distributed Generation.

| § | Cemig D distributed 3.3% less energy in 2Q25 than in 2Q24.

| § | Cemig D’s annual tariff adjustment, valid from May 28, produced an average increase of 7.78%; there was also a gain from the change in Aneel’s methodology for calculating non-technical energy losses (which increased the scope of the calculation to include distributed generation).

| § | The effective corporate income tax rate was 13.8% in 2Q25, lower than in 2Q24 (21.5%).

| § | Equity income (share of gain/loss in non-consolidated investees) in 2Q25 was R$ 38.7 million higher than in 2Q24, reflecting a strong result in Taesa.

Effects in 2Q24

| § | Reversal of tax provisions – referring to a judgment on Social Security contributions on profit sharing payments – added R$ 385.7 million to net profit.

| § | Elimination of amounts to be repaid to consumers in 2Q24, with counterpart in finance income: effect of R$ 271 million on net profit

| § | Posting of a civil liability provision of R$ 52.6 million, related to power sales transactions.

| § | Success in legal action relating to the PAT (Workers’ Support Fund): R$ 50.2 million posted in Finance income; income tax provision reduced by R$ 31 million

| § | R$ 95.3 million negative item in net profit from effect of variation in the US dollar exchange rate on debt in US dollars (net of hedge).

More details of these variations are given below.

17

Operational revenue

| 2Q25 | 2Q24 | Change %
R$ ’000 |  |  |
Revenue from supply of electricity | 8,686,379 | 8,144,077 | 6.7%
Revenue from use of distribution systems (TUSD charge) | 1,414,496 | 1,251,554 | 13.0%
CVA and Other financial components in tariff adjustments | 70,394 | –56,556 | –224.5%
Reimbursement to consumers of PIS, Pasep and Cofins tax credits | – | 190,186 | –
Transmission operation and maintenance revenue | 114,197 | 79,716 | 43.3%
Transmission construction revenue | 179,130 | 104,891 | 70.8%
Financial remuneration of transmission contractual assets | 30,416 | 134,430 | –77.4%
Generation: capital reimbursement | 31,201 | 20,596 | 51.5%
Distribution construction revenue | 1,324,446 | 1,154,213 | 14.7%
Adjustment to expectation of cash flow from indemnifiable financial assets of the distribution concession | 26,618 | 22,258 | 19.6%
Gain on financial updating of Concession Grant Fee | 118,859 | 107,011 | 11.1%
Settlements on CCEE | 39,585 | 14,380 | 175.3%
Retail supply of gas | 965,491 | 972,424 | –0.7%
Fine for continuity indicator shortfall | –39,949 | –37,084 | 7.7%
Other revenues | 1,315,539 | 761,856 | 72.7%
Taxes and charges reported as deductions from revenue | –3,490,507 | –3,427,961 | 1.8%
Net revenue | 10,786,295 | 9,435,991 | 14.3%

Revenue from supply of electricity

| 2Q25 | 2Q24 | Change, %
| MWh | R$ ’000 | Average price billed – R$/MWh (1) | MWh | R$ ’000 | Average price billed – R$/MWh (1) | MWh | R$ ’000
Residential | 3,667,850 | 3,374,148 | 919.93 | 3,552,969 | 3,066,719 | 863.14 | 3.2% | 10.0%
Industrial | 4,676,668 | 1,278,269 | 273.33 | 4,440,313 | 1,326,674 | 298.78 | 5.3% | –3.6%
Commercial, services and others | 3,141,492 | 1,650,182 | 525.29 | 3,009,442 | 1,609,719 | 534.89 | 4.4% | 2.5%
Rural | 984,250 | 643,413 | 653.71 | 927,534 | 599,558 | 646.4 | 6.1% | 7.3%
Public authorities | 384,704 | 229,246 | 595.9 | 270,497 | 232,496 | 859.51 | 42.2% | –1.4%
Public lighting | 235,650 | 140,046 | 594.3 | 244,326 | 131,933 | 539.99 | –3.6% | 6.1%
Public services | 58,262 | 146,260 | 2510.38 | 235,023 | 174,633 | 743.05 | –75.2% | –16.2%
Subtotal | 13,148,876 | 7,461,564 | 567.47 | 12,680,104 | 7,141,732 | 563.22 | 3.7% | 4.5%
Own consumption | 6,992 | – | – | 7,710 | – | – | –9.3% | –
Retail supply not yet invoiced, net | – | 77,702 | – | – | 68,410 | – | – | –
| 13,155,868 | 7,539,266 | 567.47 | 12,687,814 | 7,210,142 | 563.22 | 3.7% | 4.6%
Wholesale supply to other concession holders | 5,042,543 | 1,162,502 | 230.54 | 3,952,637 | 966,330 | 244.48 | 27.6% | 20.3%
Wholesale supply not yet invoiced, net | – | –15,389 | – | – | –32,395 | – | – | –52.5%
Total | 18,198,411 | 8,686,379 | 474.07 | 16,640,451 | 8,144,077 | 487.48 | 9.4% | 6.7%

| (1) | (Calculation of average price does not include revenue from supply not yet billed.)

| (2) | Includes Regulated Market Electricity Sale Contracts (CCEARs) and ‘bilateral’ contracts with other agents.

18

* Includes offset Distributed Generation supply.

Energy sold to final consumers

Gross revenue from energy sold to final consumers in 2Q25 was R$ 7,539.3 million, a 4.6% year-on-year increase from R$ 7,210.1 million in 2Q24, mainly reflecting volume of energy sold 3.7% higher.

Wholesale supply

Revenue from wholesale supply in 2Q25 was R$ 1,147.1 million, an increase of 22.8% from R$ 933.9 million in 2Q24. This reflects volume of energy billed 27.6% higher, especially to Traders.

Transmission

| 2Q25 | 2Q24 | Change %
TRANSMISSION REVENUE (R$ ’000) |  |  |
Operation and maintenance | 114,197 | 79,716 | 43.3%
Infrastructure construction, updating and enhancement | 179,130 | 104,891 | 70.8%
Financial remuneration of transmission contractual assets | 30,416 | 134,430 | –77.4%
Total | 323,743 | 319,037 | 1.5%

Transmission revenue was R$ 4.7 million higher than in 2Q24, the increase mainly comprising construction revenue, due to the higher volume invested in reinforcement and improvement works.

Gas

Gross revenue from supply of gas in 2Q25 totaled R$ 965.5 million, compared to R$ 972.4 million in 2Q24. The difference is mainly in a lower volume of gas sold to industrial clients.

19

Revenue from Use of Distribution Systems – The TUSD charge

| 2Q25 | 2Q24 | Change %
TUSD (R$ ’000)
Use of the Electricity Distribution System | 1,414,496 | 1,251,554 | 13.0%

In 2Q25 revenue from the TUSD – charged to Free Consumers for distribution of their energy – was R$ 162.9 million higher than in 2Q24. This reflects Cemig D’s annual tariff adjustments in May 2024 and 2025, with full effect in the quarter and from May 28, 2025, respectively.

| 2Q25 | 2Q24 | Change %
POWER TRANSPORTED – MWh
Industrial | 5,304,139 | 5,492,623 | –3.4%
Commercial | 665,380 | 585,048 | 13.7%
Rural | 33,339 | 14,789 | 125.4%
Public services | 206,788 | 134,663 | 53.6%
Concession holders | 73,395 | 74,376 | –1.3%
Total energy transported | 6,283,041 | 6,301,499 | –0.3%

Operational costs and expenses

| 2Q25 | 2Q24 | Change %
CONSOLIDATED (R$ ’000) |  |  |
Electricity bought for resale | 4,547,303 | 3,693,227 | 23.1%
Charges for use of national grid | 776,715 | 817,136 | –4.9%
Gas purchased for resale | 485,097 | 508,828 | –4.7%
Construction cost | 1,463,371 | 1,226,933 | 19.3%
Personnel (reversals) | 388,389 | 416,784 | –6.8%
Employees’ and managers’ profit shares | 46,024 | 43,187 | 6.6%
Post-employment obligations (reversals) | 109,324 | 98,391 | 11.1%
Materials | 26,654 | 33,591 | –20.7%
Outsourced services | 527,007 | 507,706 | 3.8%
Depreciation and amortization | 368,393 | 337,779 | 9.1%
Provisions (reversals) | 113,626 | –454,184 | –
Impairment | – | 4,438 | –
Provisions for client default | 3,098 | 77,300 | –96.0%
Provision for loss on other credits | 30,126 | 24,592 | 22.5%
RBSE (national grid) remeasurement | 198,895 | – | –
Other costs and expenses | 138,641 | 106,190 | –
Total | 9,222,663 | 7,441,898 | 23.9%

Operating costs and expenses in 2Q25 totaled R$ 9.22 billion, an increase of R$ 1.78 billion compared to 2Q24. The main factors in the higher total were: (i) Cost of energy bought for resale was R$ 854.1 million higher than in 2Q24; (ii) construction cost was R$ 236.4 million higher; (ii) the effect of remeasurement of reimbursements of value for assets in the national grid (‘RBE assets’) added R$ 198.9 million; and there were reversals of tax provisions (totaling R$ 584.3 million) reducing expenses in 2Q24. See more details on costs and expenses in the following pages.

20

Electricity purchased for resale

| 2Q25 | 2Q24 | Change %
CONSOLIDATED (R$ ’000) |  |  |
Electricity acquired in Free Market | 1,656,838 | 1,269,988 | 30.5%
Electricity acquired in Regulated Market auctions | 1,046,488 | 1,035,152 | 1.1%
Distributed generation | 846,075 | 697,974 | 21.2%
Spot market | 489,394 | 132,881 | 268.3%
Supply from Itaipu Binacional | 322,822 | 304,286 | 6.1%
Physical guarantee quota contracts | 200,845 | 214,415 | –6.3%
Individual (‘bilateral’) contracts | 132,433 | 122,958 | 7.7%
Proinfa | 134,838 | 116,081 | 16.2%
Quotas for Angra I and II nuclear plants | 83,446 | 94,393 | –11.6%
Credits of PIS, Pasep and Cofins taxes | –365,876 | –294,901 | 24.1%
| 4,547,303 | 3,693,227 | 23.1%

The consolidated expense on electricity bought for resale in 2Q25 was R$ 4.57 billion, an increase of +23.1% (R$ 854.1 million) from 2Q24 This mainly reflects several factors:

| § | Costs of energy acquired in the Free Market (the largest item in energy costs), at R$ 1,656.8 million, were R$ 386.8 million (+30.5%) higher than in 2Q24, due to needs for higher purchases to meet the higher volume sold by the Trading activity, and to cover contractual agreements.

| § | The cost of energy acquired in the spot market was R$ 356.5 million, or 268.3%, higher than in 2Q24. This increase was mainly caused by the increase in the spot price (PLD) in the Southeast/Center-West submarket, which was not compensated or offset by spot prices in the Northeast and North submarkets, with an average difference between submarkets of more than R$ 60 per MW. The Company buys energy in the Northeast and North and its sales are mostly concentrated in the Southeast and Center-West, generating an exposure to the difference between spot prices between these sub-markets – with negative effect on profit of the Trading activity. In distribution, the negative effect of this exposure is mitigated by the CVA (‘Account Compensating for Variations in ‘Portion A’ items’) – which provides compensation in the next Annual Tariff Adjustment. In addition, the lower GSF in the quarter (0.95 in 2Q25 and 0.99 in 2Q24) caused a higher need for purchase of energy.

| § | The cost of distributed generation was R$ 148.1 million (+21.2%) higher, reflecting an increase in the tariff for buying DG, and a 20.8% increase in the amount of energy injected into the system – totaling 1,797 GWh in 2Q25 – in turn caused by the rapid expansion of the number of DG facilities connected (they expanded from 273,000 in June 2024 to 336,000 in June 2025).

Note that for Cemig D, purchased energy is a non-manageable cost: the difference between the amounts used as a reference for calculation of tariffs and the costs actually incurred is compensated for in the next tariff adjustment.

21

| 2Q25 | 2Q24 | Change %
Cemig D (R$ ’000) |  |  |
Supply acquired in auctions on the Regulated Market | 1,057,434 | 1,045,713 | 1.1%
Distributed generation | 846,075 | 697,973 | 21.2%
Spot supply – (CCEE power exchange) | 333,854 | 121,879 | 173.9%
Supply from Itaipu Binacional | 322,822 | 304,286 | 6.1%
Physical guarantee quota contracts | 205,235 | 218,530 | –6.1%
Individual (‘bilateral’) contracts | 132,433 | 122,958 | 7.7%
Proinfa | 134,838 | 116,081 | 16.2%
Quotas for Angra I and II nuclear plants | 83,446 | 94,393 | –11.6%
Credits of PIS, Pasep and Cofins taxes | –198,698 | –177,062 | 12.2%
| 2,917,439 | 2,544,751 | 14.6%

Charges for use of the transmission network and other system charges

Charges for use of the transmission network in 2Q25 were R$ 776.7 million, 4.9% lower than in 2Q24.

In the distribution business this is a non-manageable cost: the difference between the amounts used as a reference for calculation of tariffs and the costs actually incurred is compensated for in the next tariff adjustment.

Gas purchased for resale

The expense on acquisition of gas in 2Q25 was R$ 485.1 million, or 4.7% less than in 2Q24 – mainly reflecting lower volume acquired to meet the demand of the regulated market.

Outsourced services

Expenditure on outsourced services was 3.8% (R$ 19.3 million) higher than in 2Q24, with the following increases as the main factors: tree pruning, R$ 5.2 million (25.3%) higher; outsourced labor, R$ 5.2 million (42.7%) higher; and costs of disconnecting and reconnecting consumers’ supply R$ 2.9 million (18.7%) higher.

Client default provision

The expense on provisions for losses due to client default in 2Q25 was R$ 3.1 million, or R$ 74.2 million less than in 2Q24.This (i) reflects the Company’s actions in combating default, and (ii) results from the revision, in 3Q24 (with positive effect in the subsequent 12 months), of the criteria for accounting overdue client receivables (increasing the threshold for posting a 100% loss from 24 to 36 months, to give a more faithful estimate of the actual market practice in client payment of past due receivables).

Provisions

New provisions of R$ 113.6 million were posted in 2Q25. This compares with a R$ 454.2 million reversal of provisions in 2Q24. The main component in that amount was a reversal of R$ 584.3 million, in 2024, for a first instance court decision in relation to Social Security Contributions.

People

Expenditure on personnel was R$ 388.4 million in 2Q25, 6.8% less than in 2Q24. This reflects lower expense on the voluntary dismissal program in 2Q25, at R$ 25.4 million, compared to R$ 78.1 million in 2Q24. Excluding this effect, other main factors in the comparison were: (i) the 4.6% salary increase under the Collective Work Agreement of November 2024; and (ii) also, a lower transfer of personnel costs to investment in 2Q25.

22

Finance income and expenses

| 2Q25 | 2Q24 | Change %
(R$ ’000) |  |  |
Finance income | 302,444 | 725,474 | –58.3%
Finance expenses | –565,404 | –607,355 | –6.9%
Net finance income (expenses) | –262,960 | 118,119 | –322.6%

For 2Q25 the Company posted consolidated net financial expenses of R$ 263.0 million, compared to net financial revenue of R$ 118.1 million in 2Q24. Main factors:

| § | Borrowing costs, and monetary updating of debentures, were a total of R$ 151.5 million higher, reflecting growth of approximately 30% in gross debt, and the increase in the Selic basic interest rate.

| § | In 2Q24 there was a R$ 410.6 million write-down of liabilities posted as “Repayable to consumers”, with counterpart in Finance income – since the amount estimated by Cemig D for updating of the liability was higher than the amount calculated by using the criteria used by Aneel. In 2Q25, financial revenue of R$ 4.3 million was recognized for updating of credits due to the Company.

| § | Also in 2Q24 there was a financial expense of R$ 214.5 million, from the effect on US dollar-denominated debt of 11.26% appreciation of the US dollar against the Real. There was no such effect in 2Q25, since the debt in US dollars was settled in full in December 2024.

23

Gain (loss) in non-consolidated investees (Equity income)

| 2Q25 | 2Q24 | Change R$ ’000
EQUITY INCOME (Gain/loss in non-consolidated investees)
Taesa | 106,958 | 51,707 | 55,251
Paracambi | 4,527 | 4,398 | 129
Cemig Sim (Equity interests) | 3,920 | 3,534 | 386
Guanhães Energia | 2,182 | 3,823 | –1,641
Hidrelétrica Cachoeirão | 1,677 | 832 | 845
Hidrelétrica Pipoca | 180 | 6,316 | –6,136
Belo Monte (Aliança Norte and Amazônia Energia) | –42,026 | –27,178 | –14,848
Itaocara | - | –4,721 | 4,721
Total | 77,418 | 38,711 | 38,707

Equity income grew by R$ 38.7 million in 2Q25 compared to 2Q24. The main effects were (i) a stronger result in Taesa, and (ii) a weaker result in Belo Monte, due to higher finance expense (as a result of the higher TJLP (long-term interest rate) in 2Q25) and an increase in operating costs, which were impacted by an onerous contract related to the difference between the volumes of energy contracted for purchase and sale in future electricity transactions.

24

CONSOLIDATED EBITDA (IFRS, and Adjusted)

Ebitda is a non-accounting metric, prepared by the Company, reconciled with its consolidated financial statements in accordance with the specifications in CVM Circular SNC/SEP 01/2007 and CVM Resolution 156 of June 23, 2022. It comprises: Net profit adjusted for the effects of: (i) Net finance income (expenses), (ii) Depreciation and amortization, and (iii) Income tax and the Social Contribution tax. Ebitda is not a metric recognized by Brazilian GAAP nor by IFRS; it does not have a standard meaning; and it may be non-comparable with metrics with similar titles provided by other companies. Cemig publishes Ebitda because it uses it to measure its own performance. Ebitda should not be considered in isolation or as a substitute for net profit or operational profit, nor as an indicator of operational performance or cash flow, nor to measure liquidity, nor the capacity for payment of debt. The Company adjusts its Ebitda (calculated in accordance with CVM Instruction 156/2022) to exclude extraordinary items which, by their nature, do not contribute to information on the potential for gross cash flow generation.

2Q25 Consolidated Ebitda
R$ ’000 | Generation | Transmission | Trading | Distribution | Gas | Holding co. and equity interests | Total
Profit (loss) for the period | 449,724 | -2,841 | 6,481 | 550,550 | 150,820 | 33,547 | 1,188,281
Income tax and Social Contr. tax | 31,781 | -36,693 | -3,961 | 147,391 | 71,765 | -20,474 | 189,809
Net finance income (expenses) | -15,614 | 3,207 | -4,121 | 257,444 | -4,533 | 26,577 | 262,960
Depreciation and amortization | 78,044 | 4,652 | 3 | 254,372 | 25,438 | 5,884 | 368,393
Ebitda per CVM Resolution 156 | 543,935 | -31,675 | -1,598 | 1,209,757 | 243,490 | 45,534 | 2,009,443
Net profit attributed to | - | - | - | - | -648 | - | -648
non-controlling stockholders
Remeasurement of | -2,302 | -1,422 | -326 | -16,163 | - | -948 | -21,161
post-employment liabilities
RBSE (national grid) – remeasurement | - | 198,895 | - | - | - | - | 198,895
Voluntary severance program | 1,920 | 1,187 | 272 | 20,812 | - | 1,200 | 25,391
Adjusted Ebitda | 543,553 | 166,985 | -1,652 | 1,214,406 | 242,842 | 45,786 | 2,211,920

2Q24 Consolidated Ebitda
R$ ’000 | Generation | Transmission | Trading | Distribution | Gas | Holding co. and equity interests | Total
Profit (loss) for the period | 315,039 | 108,947 | 101,008 | 1,060,437 | 137,823 | -34,668 | 1,688,586
Income tax and Social Contribution tax | 58,300 | 27,512 | –576 | 350,163 | 62,904 | –35,966 | 462,337
Net finance income (expenses) | 75,996 | 41,764 | –6,921 | –305,459 | 11,937 | 64,564 | –118,119
Depreciation and amortization | 83,670 | –60 | 4 | 224,113 | 24,085 | 5,967 | 337,779
Ebitda per CVM Resolution 156 | 533,005 | 178,163 | 93,515 | 1,329,254 | 236,749 | –103 | 2,370,583
Net profit attributed to non–controlling stockholders | – | – | – | – | –593 | – | –593
Provision for civil claims – PPAs | – | – | 52,647 | – | – | – | 52,647
Reversal of tax provisions – Social security contributions on profit sharing | –30,503 | –32,967 | –5,049 | –513,331 | – | –2,500 | –584,350
Voluntary severance program | 9,312 | 10,064 | 1,541 | 56,468 | – | 763 | 78,148
Adjusted Ebitda | 511,814 | 155,260 | 142,654 | 872,391 | 236,156 | –1,840 | 1,916,435

25

Ebitda of Cemig D

| 2Q25 | 2Q24 | Change %
Cemig D Ebitda – R$ ’000 |  |  |
Net profit for the period | 550,554 | 1,060,436 | -48.1
Income tax and Social Contribution tax | 147,390 | 350,163 | -57.9
Net finance income (expense) | 257,443 | -305,458 | -184.3
Amortization | 254,373 | 224,113 | 13.5
Ebitda per CVM Resolution 156 | 1,209,760 | 1,329,254 | -9.0
Voluntary severance program | 20,812 | 56,468 | -63.1
Reversal of tax provisions – social security contributions on profit sharing | - | -513,331 | -
Remeasurement of post–employment liabilities | -16,163 | - | -
Adjusted Ebitda | 1,214,409 | 872,391 | 39.2
New replacement value (VNR) | 26,618 | 22,258 | 19.6
Adjusted Ebitda less VNR | 1,187,791 | 850,133 | 39.7

Cemig D posted 2Q25 Ebitda of R$ 1,209.8 million, 9.0% lower than in 2Q24. Adjusted Ebitda, at R$ 1,214.4 million, was 39.2% higher than in 2Q24.

Effects on Ebitda in this YoY comparison:

| § | The annual Tariff Adjustment, in force from May 28, 2025, provided a positive effect, as also did the change made by Aneel to its method of measuring non-technical losses – in which Aneel widened the scope of the calculation to include Distributed Generation, which increases effective loss coverage

| § | The provision for client default in 2Q25, including expected loss on other receivables, was R$ 48.3 million lower than in 2Q24.

| § | A net gain of R$ 374.9 million was recognized, for an adjustment related to the difference between amounts forecast and realized in the last tariff cycle, especially in the discounts applied to incentive-bearing generation sources and Distributed Generation.

| § | Restatement of post-employment liabilities, with a positive effect of R$ 16.2 million on Ebitda, due to migration of 557 employees to the Premium Health Plan (which creates no post-employment obligation for the Company) during the window reopened for joining in April.

| § | New Replacement Value (VNR) of R$ 26.6 million in 2Q25, vs. R$ 22.3 million in 2Q24.

| § | Total energy distributed (excluding DG) was 3.3% lower than in 2Q24 (comprising 6.4% less in the captive market, and 0.3% less in the Free Market), mainly due to migration to DG in general, and in particular migration of two large-scale clients to the Free Market. If we include distributed-generation offsets, total energy distributed was 1.0% less than in 2Q24.

| § | Expense on the voluntary severance program was R$ 20.8 million in 2Q25 and R$ 56.5 million in 2Q24.

| § | The net expense on deactivation and disposal of assets was R$ 52.0 million higher than in 2Q24.

| § | In 2Q24 there was a R$ 513.3 million reversal of provisions for a first instance judgment in favor of the Company in a case related to Social Security Contributions.

26

Cemig GT – Ebitda

Cemig GT: 2Q25 Ebitda |  |  |  |  |
R$ ’000 | Generation | Transmission | Trading | Equity interests | Total
Profit (loss) for the period | 460,115 | -6,031 | -55,415 | -56,549 | 342,120
Income tax and Social Contribution tax | 32,081 | -37,895 | -16,295 | 3,971 | -18,138
Net finance income (expenses) | -15,696 | 3,619 | -4,081 | 14,204 | -1,954
Depreciation and amortization | 76,419 | 5852 | 3 | - | 82,274
Ebitda per CVM Resolution 156 | 552,919 | -34,455 | -75,788 | -38,374 | 404,302
Voluntary severance program | 1,920 | 1,187 | 272 | 366 | 3,745
RBSE (national grid) – remeasurement | - | 198,895 | - | - | 198,895
Remeasurement of post-employment liabilities | -2,302 | -1,422 | -326 | -438 | -4,488
Adjusted Ebitda | 552,537 | 164,205 | -75,842 | -38,446 | 602,454

Cemig GT: 2Q24 Ebitda |  |  |  |  |
R$ ’000 | Generation | Transmission | Trading | Equity interests | Total
Profit (loss) for the period | 313,025 | 107,131 | –22,360 | –69,873 | 327,923
Income tax and Social Contribution tax | 58,299 | 26,616 | –13,745 | –31,713 | 39,457
Net finance income (expenses) | 75,996 | 41,890 | –6,921 | 79,395 | 190,360
Depreciation and amortization | 83,669 | – | 4 | – | 83,673
Ebitda per CVM Resolution 156 | 530,989 | 175,637 | –43,022 | –22,191 | 641,413
Reversal of tax provisions – Social security contributions on profit sharing | –30,503 | –32,967 | –5,049 | –2,500 | –71,019
Voluntary severance program | 6,643 | 7,178 | 1,099 | 544 | 15,464
Provision for civil action on an energy sale | 22,612 | 24,439 | 3,743 | 1,853 | 52,647
Adjusted Ebitda | 529,741 | 174,287 | –43,229 | –22,294 | 638,505

2Q25 Adjusted Ebitda of Cemig GT was R$ 404.3 million, 37.0% lower than in 2Q24. Adjusted Ebitda was 5.6% lower. Effects on Ebitda in this YoY comparison:

| § | Negative impact in the Trading activity due to exposure to differences in spot prices between submarkets (averaging more than R$ 60/MWh in 2Q25). This reflects that a significant part of the energy purchase is in the Northeast, while much of the sales are in other submarkets.

| § | Recognition of a reduction of R$ 198.9 million in the value of contractual assets, net of PIS, Pasep and Cofins taxes, resulting from remeasurement of the financial component of assets in the national grid, under the changes made by Aneel Ratifying Resolution 3469/2025.

| § | Equity income (gain/loss in non–consolidated investees) R$ 16.9 million weaker, led by a weaker result in Belo Monte result, due to higher finance expenses caused by the increase in the TJLP (long-term) interest rate in 2Q25.

| § | A lower GSF in the quarter (0.95 in 2Q25, vs. 0.99 in 2Q24) caused a greater need for purchase of energy.

| § | The expense on the voluntary severance program in 2Q25, at R$ 3.7 million, was lower than in 2Q24 (R$ 15.5 million).

| § | Migration of employees to the Premium Heath Plan (which causes no post-employment obligation for the Company) caused a positive effect of R$ 4.5 million in Ebitda.

27

| § | Excluding spot sales in the CCEE (wholesale Energy Exchange), the volume of energy sold was 31% more than in 2Q24.

Investments

Capex in the first half of 2025 totaled R$ 2.75 billion, 12.6% more than in 1H24. Realized investment in 2Q25 totaled R$ 1.54 billion.

Highlights in 1H25 were: Investment of R$ 2.16 billion by Cemig D (Distribution), (i) connecting more than 82,000 new clients, (ii) energizing 9 substations, (iii) installing more than 49,000 smarts, and (iv) adding 2,600 km of medium and low voltage networks; in Transmission, investment of R$ 173 million in strengthening and enhancement of the power line network; in solar Distributed Generation, addition of 21 MWac of installed capacity – and construction of 100 km of gas pipelines by Gasmig.

Execution of the largest investment program in Cemig’s history will modernize its electricity system, ensuring reliability, in line with its strategic plan of focusing on Minas Gerais and on its core businesses, and providing ever-improving service to the client. Investment totaling R$ 39.20 billion is planned for the period 2025–29, of which R$ 6.35 billion is being invested in 2025.

28

Debt

CONSOLIDATED (R$ ’000) | Jun. 2025 | 2024 | Change, %
Gross debt | 15,263,937 | 12,279,300 | 24.3%
Cash and equivalents + Securities | 3,035,296 | 2,390,743 | 27.0%
Net debt | 12,228,641 | 9,888,557 | 23.7%
CEMIG GT – R$ ’000 | Jun. 2025 | 2024 | Change, %
Gross debt | 1,689,097 | 1,031,924 | 63.7%
Cash and equivalents + Securities | 631,018 | 542,566 | 16.3%
Net debt | 1,058,079 | 489,358 | 116.2%
CEMIG D (R$ ’000) | Jun. 2025 | 2024 | Change, %
Gross debt | 12,333,041 | 10,037,621 | 22.9%
Cash and equivalents + Securities | 1,692,384 | 1,114,866 | 51.8%
Net debt | 10,640,657 | 8,922,755 | 19.3%

In 2Q25, Cemig D concluded its 13th debenture issue, for R$ 1.89 billion, in two series:

Series | Quantity | Value in R ’000 | Rate | Maturity | Amortization
1st | 1,143,000 | R$ 1,143,000 | CDI + 0.64% p.a. | 1,831 days | 48th and 60th months
2nd | 752,000 | R$ 752,000 | CDI + 0.80% p.a. | 2,562 days | 72nd and 84th months

Also in 2Q25, Cemig D amortized R$ 2.05 billion of its 7th and 9th debenture issues.

29

| 2Q25
DEBT AMORTIZED – R$ ’000 |
Cemig GT | –
Cemig D | 2,368,868
Others | –
Total | 2,368,868

30

Cemig’s long-term ratings

Cemig’s ratings have improved significantly in recent years, and are currently at their highest ever. In 2021 the three principal rating agencies upgraded their ratings for Cemig. In April 2022, Moody’s again upgraded its rating for Cemig, by one notch. In May 2024, Moody’s raised its rating to AA+. In October Fitch raised its rating to AAA, the highest of all ratings on the Brazilian scale, recognizing: (i) consistent results and cash generation, (ii) a diversified asset base, and (iii) discipline in capital allocation. More details in this table:

31

ESG – Report on performance

Cemig fulfills its public commitments related to sustainability by implementing strategic initiatives, monitored through corporate indicators and goals. These commitments are subdivided into several pillars: (i) The energy transition; (ii) The environment; (iii) Local development; (iv) Our people; and (v) Solid governance.

Cemig highlights

| § | Digitalization of service channels

80% of customer service encounters between Cemig and its clients now take place via digital channels – a significant advance in modernizing processes and the efficiency of our corporate governance. This digital transformation helps increase transparency, reduce operational costs and improve clients’ experience.

Environment

| § | Combating fire and protecting the power grid.

In 2024, Cemig suffered 1,240 fire-caused events, affecting around 1.5 million people in Minas Gerais. To reduce the risk of outages, in 2025 the Company announced preventive actions and a robust budget for tree pruning and power grid maintenance.

| § | Investments in preventive maintenance

The Company is investing R$ 360 million in preventive maintenance in 2025, focusing on modernization of substations, strengthening of networks and actions against extreme weather events. More than 3.6 tons of telecommunication cables improperly installed on electricity poles were also removed, contributing to safety, visual quality and proper functioning of electricity infrastructure.

Social

Expansion of the Social Electricity Tariff

| § | Cemig now serves more than 1.5 million families charged at the Social electricity rate (Tarifa Social de Energia Elétrica – TSEE), which offers up to 65% discount on the client's electricity bill. The Company has intensified communication actions to expand access to the program. In this quarter alone, 93,000 clients in the Zona da Mata region were included in the benefit.

32

Energy efficiency in hospitals and healthcare centers

| § | A total of R$ 1.1 million has been invested in modernizing the lighting of 137 health units in Belo Horizonte, with replacement of existing lamps by more efficient models. This reduces energy consumption, while improving working conditions for healthcare professionals.

| § | R$ 493,000 was allocated to replacing an autoclave at the Eliane Martins Municipal Hospital in Ipatinga. The new technology makes sterilization faster and safer, with an average saving of 52.57 MWh per year.

| § | Solar generation was installed at the Nossa Senhora dos Anjos Hospital in Itambacuri, to reduce costs.

Menstrual Dignity campaign; Volunteering

| § | Expanding its commitment to gender equity and social inclusion, the Cemig Volunteering Program organized a campaign to collect menstrual hygiene items, for free distribution, promoting citizenship and awareness about menstruation, combating any associated stigma, and improving health for people in situations of vulnerability.

Cemig present in the leading sustainability indices

33

Indicators

34

Performance of Cemig’s shares

Security | Jun. 30, 2025 | Dec. 31, 2024 | Change, %
Prices (2)
CMIG4 (PN) at the close (R$/share) | 10.8 | 10.06 | 7.39%
CMIG3 (ON) at the close (R$/share) | 15.28 | 13.63 | 12.07%
CIG (ADR for PN shares), at close (US$/share) | 1.96 | 1.65 | 19.15%
CIG.C (ADR for ON shares) at close (US$/share) | 2.76 | 2.32 | 18.93%
XCMIG (Cemig PN shares on Latibex), close (€/share) | 1.66 | 1.71 | –2.92%
Average daily trading
CMIG4 (PN) (R$ mn) | 143.02 | 143.11 | –0.06%
CMIG3 (ON) (R$ mn) | 4.18 | 3.75 | 11.58%
CIG (ADR for PN shares) (US$ mn) | 5.7 | 4.32 | 31.97%
CIG.C (ADR for ON shares) (US$ mn) | 0.01 | 0.03 | –66.40%
Indices
IEE | 101,295 | 77,455 | 30.78%
IBOV | 138,855 | 120,283 | 15.44%
DJIA | 9,554 | 8,974 | 6.47%
Indicators
Market valuation at end of period, R$ mn | 35,176 | 35,149 | 0.08%
Enterprise value (EV), R$ mn (1) | 45,724 | 42,668 | 7.16%
Dividend yield of CMIG4 (PN) (%) (3) | 17.72 | 11.96 | 5.76 pp
Dividend yield of CMIG3 (ON) (%) (3) | 12.53 | 9.08 | 3.45 pp
(1) EV = (Market valuation [= R$/share x number of shares]) + (consolidated Net debt).
(2) Share prices adjusted for corporate action payments, including dividends.
(3) (Dividends distributed in last 4 quarters) / (Share price at end of the period). |

Cemig’s shares, by volume (aggregate of common (ON) and preferred (PN) shares), were the fourth most liquid in Brazil’s electricity sector, and among the most traded in the Brazilian equity market. On the New York Stock Exchange the volume traded in ADRs for Cemig’s preferred shares (CIG) in 1H25 was US$ 695.92 million: we see this as reflecting recognition by the investor market and reaffirmation of Cemig as a global investment option. The benchmark Ibovespa index of the São Paulo Stock Exchange rose 19.15% in the period, while Cemig’s preferred shares rose 7.39% and its 12.07%. In New York the ADRs for Cemig’s preferred shares rose 19.15% in the same period, and the price of the common shares rose 18.93%.

35

Plant

Plant | Company | Cemig power (MW) | Cemig physical guarantee (MW) | End of the concession | Type | Cemig stake |  |
Emborcação | Cemig GT | 1,192 | 475 | May 2027 | Hydro plant | 100.00% |  |
Nova Ponte | Cemig GT | 510 | 257 | Aug. 2027 | Hydro plant | 100.00% |  |
Três Marias | Cemig GT | 396 | 227 | Jan. 2053 | Hydro plant | 100.00% |  |
Irapé | Cemig GT | 399 | 198 | Sep. 2037 | Hydro plant | 100.00% |  |
Salto Grande | Cemig GT | 102 | 74 | Jan. 2053 | Hydro plant | 100.00% |  |
Sá Carvalho | Sá Carvalho | 78 | 54 | Aug. 2026 | Hydro plant | 100.00% |  |
Rosal | Rosal Energia | 55 | 28 | Dec. 2035 | Hydro plant | 100.00% |  |
Itutinga | Cemig Ger. Itutinga | 52 | 27 | Jan. 2053 | Hydro plant | 100.00% |  |
Boa Esperança | Cemig GT | 85 | 25 | Aug. 2057 | Solar plant | 100.00% |  |
Camargos | Cemig Ger. Camargos | 46 | 22 | Jan. 2053 | Hydro plant | 100.00% |  |
Três Marias Jusante | Cemig GT | 70 | 20 | Feb. 2058 | Solar plant | 100.00% |  |
Volta do Rio | Cemig GT | 42 | 18 | Dec. 2031 | Wind plant | 100.00% |  |
Poço Fundo | Cemig GT | 30 | 17 | May 2052 | Small Hydro Plant | 100.00% |  |
Pai Joaquim | Cemig PCH | 23 | 14 | Oct. 2034 | Small Hydro Plant | 100.00% |  |
Piau | Cemig Ger. Sul | 18 | 14 | Jan. 2053 | Hydro plant | 100.00% |  |
Praias do Parajuru | Cemig GT | 29 | 8 | Sep. 2032 | Wind plant | 100.00% |  |
Gafanhoto | Cemig Ger. Oeste | 14 | 7 | Jan. 2053 | Hydro plant | 100.00% |  |
Peti | Cemig Ger. Leste | 9 | 6 | Jan. 2053 | Hydro plant | 100.00% |  |
Joasal | Cemig Ger. Sul | 8 | 5 | Jan. 2053 | Hydro plant | 100.00% |  |
Tronqueiras | Cemig Ger. Leste | 9 | 3 | Dec. 2046 | Hydro plant | 100.00% |  |
Queimado | Cemig GT | 87 | 53 | July 2034 | Hydro plant | 82.50% |  |
Belo Monte | Norte | 1,313 | 534 | Jul. 2046 | Hydro plant | 11.69% |  |
Paracambi | Paracambi Energética | 12 | 10 | Jan. 2034 | Small Hydro Plant | 49.00% |  |
Cachoeirão | Hidrelétrica Cachoeirão | 13 | 8 | Jan. 2046 | Small Hydro Plant | 49.00% |  |
Pipoca | Hidrelétrica Pipoca | 10 | 6 | Dec. 2034 | Small Hydro Plant | 49.00% |  |
Others |  | 76 | 37 |  |  |  |  |
Subtotal |  | 4,678 | 2,146 |  |  |  |  |
Cemig Sim | Equity interests | 22.6 | 5.5 |  | Solar plant | 49.00% |  |
Cemig Sim | Owned | 48.3 | 13.1 |  | Solar plant | 100.00% |  |
Total |  | 4,749 | 2,165 |  |  |  |  |

Note: The physical guarantees of the Boa Esperança and Jusante plants are the values certified by a certifying company, but they have not been approved by Aneel. For the plants of Cemig Sim, the installed capacity is given in MW ac, and the physical guarantee has been estimated in the table as being equal to the estimated generation.

There are more details of Cemig Sim's expansion projects on the next page.

36

Expansion of solar generation

Project | Company | Installed capacity (MW ac) | Capacity (MW p) | Expected generation (MW average) | Planned operational start date
Ouro Solar Project | Cemig Sim | 22.5 | 31.9 | 6.2 | Aug. 2025 – Apr. 2026
Bloco Azul project | Cemig Sim | 20.0 | 28.3 | 4.9 | Aug. 2025 – Apr. 2026
Solar do Cerrado Project | Cemig Sim | 50.0 | 70.0 | 10.5 | Sep. 2025 – May 2026
Total |  | 92.5 | 130.3 | 21.6 |

RAP: July 2025–June 2026 cycle

The values of RAP for the 2025–2026 cycle came into effect in July 2025, incorporating the effects for Cemig of the remeasurement of the RBSE (national grid) financial component, as defined by Aneel.

ANEEL RATIFYING RESOLUTION (ReH) 3381/2025 (2025–2026 cycle)
R$ ’000 | RAP | Adjustment component | Total | Expiration
Cemig | 1,245,408 | 60,207 | 1,305,615 |
Cemig GT | 1,164,296 | 62,435 | 1,226,731 | Dec. 2042
Cemig Itajubá | 52,484 | -1,061 | 51,423 | Oct. 2030
Centroeste | 16,078 | -1,017 | 15,061 | Mar. 2035
Sete Lagoas | 12,550 | -150 | 12,401 | Jun. 2041
Taesa (Cemig stake: 21.68%) | 861,718 | -35,288 | 826,430 |
TOTAL RAP |  |  | 2,132,045 |

RBSE* COMPENSATION at June 2025 prices (excluding sector charges)
R$ ’000 – by cycle | 2025-2026 | 2026-2027 | 2027-2028 | 2028-2029 | 2029-2033
Economic | 112,434 | 112,434 | 112,434 | 35,253 | 35,253
Financial | 298,669 | 298,669 | 298,669 |  |
Total | 411,102 | 411,102 | 411,102 | 35,253 | 35,253
** The figures for indemnity/reimbursement of National Grid components are included in the RAP of Cemig (first table). |

Cemig currently has state environmental (REA) approval for large-scale strengthening and enhancement works, with total capex of R$ 1,088 million, and for investments of R$ 231 million related to Lot 1 of Auction 02/2022 (with completion of works planned for 2028).

Planned operational start date | Capex (R$ ’000) | RAP (R$ ’000)
2025 | 390,903 | 62,491
2026 | 228,929 | 36,908
2027 | 442,238 | 73,472
2028 | 256,885 | 23,587
Total | 1,318,956 | 196,458

37

Transmission Regulatory Revenue and EBITDA

Transmission Regulatory Result - 2Q25
R$ ’000 | Cemig GT | Centroeste | Sete Lagoas | Total
Revenue from Transmission operations | 429,656 | 6,500 | 2,947 | 439,103
Taxes on revenue | -37,962 | -237 | -273 | -38,472
Sector charges | -60,542 | -271 | -115 | -60,928
Net Regulatory Revenue | 331,152 | 5,992 | 2,559 | 339,703
Regulatory Profit for the period | 266,338 | 4,744 | 1,312 | 272,394
Income tax and Social Contribution tax | -62,794 | 301 | 490 | -62,003
Net finance income (expenses) | -876 | -306 | -370 | -1,552
Depreciation and amortization | 55,769 | 373 | 609 | 56,751
Regulatory EBITDA | 258,437 | 5,112 | 2,041 | 265,590

38

Complementary information

Cemig D

CEMIG D Market
Quarter | Captive | TUSD EN ERGY1 | DISTRIBUTED ENERGY | TUSD PICK 2
Consumers
1Q22 | 5,738 | 5,397 | 11,136 | 36.2
2Q22 | 6,050 | 5,853 | 11,904 | 36.7
3Q22 | 5,942 | 5,790 | 11,733 | 34.7
4Q22 | 6,047 | 5,755 | 11,802 | 40.5
1Q23 | 5,723 | 5,566 | 11,289 | 38.0
2Q23 | 5,949 | 6,058 | 12,007 | 38.5
3Q23 | 5,812 | 6,028 | 11,840 | 39.2
4Q23 | 6,376 | 6,068 | 12,445 | 39.9
1Q24 | 5,930 | 6,097 | 12,027 | 40.4
2Q24 | 5,924 | 6,301 | 12,225 | 42.4
3Q24 | 5,821 | 6,557 | 12,378 | 43.6
4Q24 | 5,812 | 6,505 | 12,317 | 42.5
1Q25 | 5,547 | 6,448 | 11,996 | 45.3
2Q25 | 5,543 | 6,283 | 11,826 | 45.9

Cemig D | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Revenues (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Revenue from supply of energy | 6,090 | 5,886 | 5,882 | 3.5% | 3.5%
Reimbursement of PIS/Pasep and Cofins credits to customers | - | - | 190 | - | -
Revenue from Use of Distribution Systems (the TUSD charge) | 1,424 | 1,440 | 1,261 | -1.1% | 12.9%
CVA and Other financial components in tariff adjustment | 70 | 126 | -57 | -44.4% | -222.8%
Construction revenue | 1,232 | 1,047 | 1,079 | 17.7% | 14.2%
Adjustment to expectation of cash flow from indemnifiable financial assets of distribution concession (VNR) | 27 | 53 | 22 | -49.1% | 22.7%
Others | 1,189 | 594 | 673 | 100.2% | 76.7%
Subtotal | 10,032 | 9,146 | 9,050 | 9.7% | 10.9%
Deductions | -2,762 | -2,643 | -2,723 | 4.5% | 1.4%
Net Revenues | 7,270 | 6,503 | 6,327 | 11.8% | 14.9%

39

Cemig D | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Expenses (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Personnel | 265 | 233 | 283 | 13.7% | -6.4%
Employees' and managers' profit sharing | 26 | 26 | 29 | 0.0% | -10.3%
Post-retirement obligations | 71 | 65 | 64 | 9.2% | 10.9%
Materials | 17 | 32 | 26 | -46.9% | -34.6%
Outsourced services | 433 | 433 | 425 | 0.0% | 1.9%
Amortization | 254 | 248 | 224 | 2.4% | 13.4%
Operating provisions | 118 | 163 | -380 | -27.6% | -131.1%
Charges for Use of Basic Transmission Network | 855 | 838 | 850 | 2.0% | 0.6%
Energy purchased for resale | 2,917 | 2,770 | 2,545 | 5.3% | 14.6%
Construction Cost | 1,232 | 1,047 | 1,079 | 17.7% | 14.2%
Other Expenses | 126 | 77 | 77 | 63.6% | 63.6%
Total | 6,314 | 5,932 | 5,222 | 6.4% | 20.9%

Cemig D | 2Q25 | 1Q25 | 2Q24 | Var. % | Var. %
Statement of Results (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Net Revenue | 7,270 | 6,503 | 6,327 | 11.8% | 14.9%
Operating Expenses | 6,314 | 5,932 | 5,222 | 6.4% | 20.9%
Operational profit | 956 | 571 | 1,105 | 67.4% | -13.5%
EBITDA | 1,210 | 819 | 1,329 | 47.7% | -9.0%
Financial Result | -257 | -202 | 306 | 27.2% | -184.0%
Provision for Income Taxes, Social Cont & Deferred Income Tax | -147 | -58 | -350 | 153.4% | -58.0%
Net Income | 551 | 311 | 1,060 | 77.2% | -48.0%

40

Cemig GT

Cemig GT | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Revenues (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Sales to end consumers | 892 | 870 | 777 | 2.5% | 14.8%
Supply | 555 | 537 | 409 | 3.4% | 35.7%
Revenues from Trans. Network | 134 | 146 | 177 | -8.2% | -24.3%
Construction revenue | 179 | 66 | 100 | 171.2% | 79.0%
Financial remuneration of transmission contractual assets | 150 | 219 | 136 | -31.5% | 10.3%
Gain on monetary updating of Concession Grant Fee | 119 | 138 | 107 | -13.8% | 11.2%
Transactions in the CCEE | 2 | 21 | 2 | -90.5% | 0.0%
Generation indemnity revenue | 31 | 27 | 21 | 14.8% | 47.6%
Others | 48 | 60 | 33 | -20.0% | 45.5%
Subtotal | 2,110 | 2,084 | 1,762 | 1.2% | 19.8%
Deductions | -358 | -381 | -345 | -6.0% | 3.8%
Net Revenues | 1,752 | 1,703 | 1,417 | 2.9% | 23.6%

Cemig GT | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Expenses (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Personnel | 90 | 80 | 99 | 12.5% | -9.1%
Employees' and managers' profit sharing | 10 | 9 | 11 | 11.1% | -9.1%
Post-retirement obligations | 22 | 21 | 20 | 4.8% | 10.0%
Materials | 9 | 6 | 6 | 50.0% | 50.0%
Outsourced services | 61 | 58 | 62 | 5.2% | -1.6%
Depreciation and Amortization | 82 | 84 | 84 | -2.4% | -2.4%
Provisions | 14 | 18 | 0 | -22.2% | -
Charges for Use of Basic Transmission Network | 75 | 74 | 73 | 1.4% | 2.7%
Energy purchased for resale | 697 | 586 | 390 | 18.9% | 78.7%
Construction Cost | 139 | 53 | 73 | 162.3% | 90.4%
RBSE (national grid) remeasurement | 199 | 0 | - | - | -
Other Expenses | 0 | 11 | 26 | -100.0% | -100.0%
Total | 1,398 | 1,000 | 844 | 39.8% | 65.6%

41

Cemig GT | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Statement of Results (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Net Revenue | 1,752 | 1,703 | 1,417 | 2.9% | 23.6%
Operating Expenses | 1,398 | 1,000 | 844 | 39.8% | 65.6%
Operational profit | 354 | 703 | 573 | -49.6% | -38.2%
Equity gain in subsidiaries | -33 | -38 | -16 | -13.2% | 106.3%
EBITDA | 404 | 749 | 641 | -46.1% | -37.0%
Financial Result | 2 | -16 | -190 | -112.5% | -101.1%
Provision for Income Taxes, Social Cont & Deferred Income Tax | 18 | -108 | -40 | 0.0% | -145.0%
Net Income | 342 | 541 | 328 | -36.8% | 4.3%

Cemig, Consolidated

Energy Sales | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
(in GWh) |  |  |  | 2Q/1Q | 2Q/2Q
Residential | 3,668 | 3,838 | 3,553 | -4.4% | 3.2%
Industrial | 4,677 | 4,311 | 4,440 | 8.5% | 5.3%
Commercial | 3,141 | 3,063 | 3,009 | 2.5% | 4.4%
Rural | 984 | 739 | 928 | 33.2% | 6.0%
Others | 679 | 795 | 749 | -14.6% | -9.3%
Subtotal | 13,149 | 12,746 | 12,679 | 3.2% | 3.7%
Own Consumption | 6 | 7 | 8 | -14.3% | -25.0%
Wholesale supply | 5,043 | 4,826 | 3,953 | 4.5% | 27.6%
TOTAL | 18,198 | 17,579 | 16,640 | 3.5% | 9.4%

Revenue from supply of electricity | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
(R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Residential | 3,374 | 3,423 | 3,067 | -1.4% | 10.0%
Industrial | 1,278 | 1,204 | 1,327 | 6.1% | -3.7%
Commercial | 1,650 | 1,647 | 1,610 | 0.2% | 2.5%
Rural | 643 | 517 | 600 | 24.4% | 7.2%
Others | 516 | 506 | 538 | 2.0% | -4.1%
Subtotal | 7,461 | 7,297 | 7,142 | 2.2% | 4.5%
Retail supply not yet invoiced | 78 | -32 | 68 | - | 14.7%
Wholesale supply | 1,147 | 1109 | 934 | 3.4% | 22.8%
TOTAL | 8,686 | 8,374 | 8,144 | 3.7% | 6.7%

42

Cemig | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Revenues (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Sales to end consumers | 7,539 | 7,265 | 7,210 | 3.8% | 4.6%
Wholesale supply | 1,148 | 1,110 | 934 | 3.4% | 22.9%
TUSD | 1,414 | 1,429 | 1,252 | -1.0% | 12.9%
CVA and Other financial components in tariff adjustment | 70 | 126 | -57 | - | -222.8%
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers | - | 0 | 190 | 0.0% | -100.0%
Transmission revenue | 114 | 60 | 80 | 90.0% | 42.5%
Financial remuneration of transmission contract | 30 | 173 | 134 | -82.7% | -77.6%
Transactions in the CCEE | 40 | 22 | 14 | 81.8% | 185.7%
Gas supply | 965 | 921 | 972 | 4.8% | -0.7%
Construction revenue | 1,503 | 1,215 | 1,259 | 23.7% | 19.4%
Others | 1,454 | 894 | 876 | 62.6% | 66.0%
Subtotal | 14,277 | 13,215 | 12,864 | 8.0% | 11.0%
Taxes and charges deductions from revenue | -3,491 | -3,371 | -3,428 | 3.6% | 1.8%
Net Revenues | 10,786 | 9,844 | 9,436 | 9.6% | 14.3%

Cemig | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Operating Expenses (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Personnel | 388 | 346 | 417 | 12.1% | -7.0%
Employees’ and managers’ profit sharing | 46 | 43 | 43 | 7.0% | 7.0%
Post-Retirement Employee Benefits | 109 | 102 | 98 | 6.9% | 11.2%
Materials | 27 | 39 | 34 | -30.8% | -20.6%
Outsourced services | 527 | 515 | 508 | 2.3% | 3.7%
Energy purchased for resale | 4,547 | 4,267 | 3,693 | 6.6% | 23.1%
Charges for use of the national grid | 777 | 767 | 817 | 1.3% | -4.9%
Gas bought for resale | 485 | 489 | 509 | -0.8% | -4.7%
Depreciation and Amortization | 368 | 364 | 338 | 1.1% | 8.9%
Provisions | 147 | 197 | -348 | -25.4% | -142.2%
Construction costs | 1,463 | 1,202 | 1,227 | 21.7% | 19.2%
RBSE (national grid) remeasurement | 199 | - | 0 |  |
Other Expenses | 140 | 92 | 106 | 52.2% | 32.1%
Total | 9,223 | 8,423 | 7,442 | 9.5% | 23.9%

43

Cemig | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Finance Income and Expenses (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
FINANCE INCOME |  |  |  |  |
Income from cash investments | 202 | 84 | 117 | 140.5% | 72.6%
Arrears fees on sale of energy | 81 | 74 | 74 | 9.5% | 9.5%
Monetary variations | 12 | 12 | 8 | 0.0% | 50.0%
Monetary variations – CVA | 13 | 18 | 0 | -27.8% | 0.0%
Monetary updating on Court escrow deposits | 20 | 21 | 15 | -4.8% | 33.3%
Pasep and Cofins charged on finance income | -72 | -53 | -49 | 35.8% | 46.9%
Gains on financial instruments - Swap | 0 | 0 | 70 | 0.0% | -100.0%
Monetary updating on PIS/Pasep and Cofins taxes credits | 4 | 0 | 406 | 0.0% | -99.0%
Others | 42 | 38 | 84 | 10.5% | -50.0%
| 302 | 194 | 725 | 55.7% | -58.3%
FINANCE EXPENSES |  |  |  |  |
Costs of loans and financings | 383 | 260 | 241 | 47.3% | 58.9%
Foreign exchange variations | - | 0 | 214 | 0.0% | -100.0%
Monetary updating – loans and financings | 62 | 125 | 53 | -50.4% | 17.0%
Foreign exchange variations - Itaipu Binacional | - | 0 | 9 | 0.0% | -100.0%
Monetary updating on PIS/Pasep and Cofins taxes credits | - | 13 | - | 0.0% | 0.0%
Estimated update of distributed generation credits | 75 | 0 | 38 | 0.0% | 97.4%
Others | 45 | 46 | 52 | -2.2% | -13.5%
| 565 | 444 | 607 | 27.3% | -6.9%
NET FINANCE INCOME (EXPENSES) | -263 | -250 | 118 | 5.2% | -322.9%

Cemig | 2Q25 | 1Q25 | 2Q24 | chg. % | chg. %
Statement of Results (R$ million) |  |  |  | 2Q/1Q | 2Q/2Q
Net Revenue | 10,786 | 9,844 | 9,436 | 9.6% | 14.3%
Operating Expenses | 9,223 | 8,423 | 7,442 | 9.5% | 23.9%
Operational profit | 1,563 | 1,421 | 1,994 | 10.0% | -21.6%
Equity gain (loss) in subsidiaries | 77 | 42 | 39 | 83.3% | 97.4%
EBITDA | 2,009 | 1,827 | 2,371 | 10.0% | -15.3%
Financial Result | -263 | -250 | 118 | 5.2% | -322.9%
Provision for Income Taxes, Social Cont & Deferred Income Tax | -190 | -175 | -462 | 8.6% | -58.9%
Net profit for the period | 1,188 | 1,039 | 1,689 | 14.3% | -29.7%

44

Cemig |  |
Recurring profit: reconciliation (R$ million) | 2Q25 | 2Q24
Net profit – IFRS | 1,188 | 1,689
Remeasurement of post-employment liabilities | -14 | -
RBSE (national grid) remeasurement | 131 | -
Voluntary retirement program | 17 | 52
Reversal of tax provision – Social security contributions on profit sharing | - | -386
PIS/Cofins taxes repayable to consumers – Reversal | - | -271
Civil action provision – Power purchase agreement | - | 35
Legal action on the PAT (Workers’ Food Program) | - | -80
FX exposure – Eurobond hedge | - | 95
Recurring net profit | 1,322 | 1,134

Cash Flow Statement | jun/25 | jun/24
(R$ million) |  |
Cash at beginning of period | 1,898 | 1,537
Cash generated by operations | 2,346 | 2,921
Net income | 2,227 | 2,841
Depreciation and amortization | 732 | 667
CVA and other financial components | -197 | -19
Equity gain (loss) in subsidiaries | -120 | -129
Remeasuring of concession financial and concession contract assets | -652 | -685
Interest and monetary variations | 622 | 418
Provisions | 306 | -174
Deferred income and social contribution taxes | 365 | 811
Refund of PIS/Pasep and Cofins credits to consumers | -178 | -513
Gain on disposal of investments | 0 | -43
Dividends receivable | 108 | 213
Interest paid on loans and financings | -526 | -442
Net gain on derivative instruments at fair value through profit or loss | - | -112
Foreign exchange variations on loans | - | 273
Post-employment obligations | 212 | 244
Others | -553 | -429
Investment activity | -3,267 | -2,790
Securities - Financial Investment | -746 | -620
Reduction of share capital in investee | - | 48
Disposal of assets | - | 101
Fixed and Intangible assets/distribution and gas infrastructure | -2,521 | -2,319
Financing activities | 780 | -104
Lease payments | -40 | -36
Proceeds from Loans, financings and debentures | 4,965 | 1,946
Interest on Equity, and dividends | -1,776 | -1,438
Payments of loans and debentures | -2,369 | -576
Cash at end of period | 1,758 | 1,564

45

Cemig - Balance Sheets (Assets) | jun/25 | 2024
(R$ million) |  |
CURRENT |  |
Cash and cash equivalents | 1,758 | 1,898
Marketable securities | 1,221 | 358
Customers, traders, concession holders and Transport of energy | 5,652 | 5,596
Concession financial assets | 1,232 | 1,190
Concession contract assets | 1,110 | 1,140
Tax offsetable | 551 | 511
Income tax and Social Contribution tax recoverable | 153 | 7
Dividends receivable | 63 | 111
Public lighting contribution | 327 | 296
Escrow deposits | 45 | 235
Reimbursement of tariff subsidies | 623 | 209
Other credits | 820 | 625
Assets classified as held for sale | 57 | 57
TOTAL CURRENT | 13,612 | 12,233
NON-CURRENT |  |
Securities | 56 | 135
Consumers and traders | 277 | 254
Tax offsetable | 1,507 | 1,455
Income tax and Social Contribution tax recoverable | 512 | 582
Deferred income tax and Social Contribution tax | 2,348 | 2,334
Escrow deposits in legal actions | 1,207 | 1,196
Reimbursement of tariff subsidies | 16 | -
Accounts receivable from the State of Minas Gerais | 35 | 40
Financial assets of the concession | 7,642 | 6,881
Contractual assets | 11,244 | 10,327
Investments | 3,275 | 3,221
Property, plant and equipment | 3,910 | 3,715
Intangible assets | 17,247 | 16,806
Leasing – rights of use | 381 | 387
Other credits | 142 | 161
TOTAL NON-CURRENT | 49,799 | 47,494
TOTAL ASSETS | 63,411 | 59,727

46

Cemig - Balance Sheets (Liabilities and Shareholders' Equity) | jun/25 | 2024
(R$ million) |  |
CURRENT |  |
Suppliers | 3,080 | 2,952
Regulatory charges | 463 | 344
Profit sharing | 93 | 111
Taxes | 749 | 725
Income tax and Social Contribution tax | 159 | 163
Interest on Equity, and dividends, payable | 2,866 | 3,611
Loans and debentures | 2,747 | 2,877
Payroll and related charges | 256 | 217
Public Lighting Contribution | 497 | 475
Post-retirement liabilities | 218 | 233
Accounts payable related to energy generated by consumers | 1,641 | 1,251
Taxes to be reimbursed to customers | 372 | 526
Leasing operations | 86 | 79
Other obligations | 446 | 582
TOTAL CURRENT | 13,673 | 14,146
NON-CURRENT |  |
Regulatory charges | 128 | 172
Loans and debentures | 12,517 | 9,403
Taxes | 488 | 496
Income tax and Social Contribution tax | 1,422 | 1,543
Provisions | 1,960 | 1,853
Post-retirement liabilities | 4,118 | 4,073
Taxes to be reimbursed to customers | 159 | 166
Leasing operations | 340 | 350
Other obligations | 127 | 142
TOTAL NON-CURRENT | 21,259 | 18,198
TOTAL LIABILITIES | 34,932 | 32,344
TOTAL EQUITY |  |
Share capital | 14,309 | 14,309
Capital reserves | 393 | 393
Profit reserves | 13,576 | 13,576
Equity valuation adjustments | -899 | -900
Retained earnings | 1,094 | -
NON-CONTROLLING INTERESTS | 28,473 | 27,378
Non-Controlling Interests | 6 | 5
TOTAL EQUITY | 28,479 | 27,383
TOTAL LIABILITIES AND EQUITY | 63,411 | 59,727

47

Disclaimer

Certain statements and estimates in this material may represent expectations about future events or results which are subject to risks and uncertainties that may be known or unknown. There is no guarantee that events or results will occur as referred to in these expectations.

These expectations are based on present assumptions and analyses from the point of view of our management, in accordance with their experience and other factors such as the macroeconomic environment, market conditions in the electricity sector, and expected future results, many of which are not under our control.

Important factors that could lead to significant differences between actual results and the projections about future events or results include: Cemig’s business strategy, Brazilian and international economic conditions, technology, our financial strategy, changes in the electricity sector, hydrological conditions, conditions in the financial and energy markets, uncertainty on our results from future operations, plans and objectives; and other factors. Due to these and other factors, our results may differ significantly from those indicated in or implied by such statements.

The information and opinions herein should not be understood as a recommendation to potential investors, and no investment decision should be based on the veracity, currentness or completeness of this information or these opinions. None of our staff nor any party related to any of them or their representatives shall have any responsibility for any losses that may arise as a result of use of the content of this material.

To evaluate the risks and uncertainties as they relate to Cemig, and to obtain additional information about factors that could give rise to different results from those estimated by Cemig, please consult the section on Risk Factors included in the Reference Form filed with the Brazilian Securities Commission (CVM), and in the 20-F Form filed with the US Securities and Exchange Commission (SEC).

Financial amounts are in R$ million (R$ mn) unless otherwise stated.

Financial data reflect the adoption of IFRS.

| 4. | Notice to Shareholders dated September 23, 2025 – Declaration of Interest on Equity

COMPANHIA ENERGÉTICA DE MINAS GERAIS - CEMIG

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 17.155.730/0001-64

COMPANY REGISTRY (NIRE): 31300040127

NOTICE TO SHAREHOLDERS

Declaration of Interest on Equity

We hereby inform our shareholders that the Executive Board approved the declaration of Interest on Equity - IoE. Detailed information about the payment is as follows:

1. Gross amount: R$604,737,000.00 (six hundred and four million, seven hundred and thirty-seven thousand reais)

2. Gross amount per share: R$0.21139610230 per share, to be paid with the mandatory minimum dividend for 2025, with a 15% withholding income tax, excluding shareholders exempt from said withholding, under the law in force;

3. Date “with rights”: common and preferred shareholders of record on September 29, 2025 will be entitled to the payment;

4. Date “ex-rights”: September 30, 2025;

5. Payment date: 2 (two) equal installments, the first of which to be paid by June 30, 2026, and the second by December 30, 2026;

Shareholders whose shares are not held in custody at CBLC and whose registration data is outdated are advised to go to a branch of Banco Itaú Unibanco S.A. (the institution managing CEMIG’s Registered Share System) bearing their personal documents for the due update of their registration data.

Belo Horizonte, September 23, 2025.

Cristiana Maria Fortini Pinto e Silva

Acting Vice President of Finance and Investor Relations

| 5. | Notice to the Market dated October 16, 2025 – Conclusion of the Onerous Transfer of Four Small Power Plants

COMPANHIA ENERGÉTICA DE MINAS GERAIS - CEMIG

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 17.155.730/0001-64

COMPANY REGISTRY (NIRE): 31300040127

CEMIG GERAÇÃO E TRANSMISSÃO S.A.

PUBLICLY-HELD COMPANY

CORPORATE TAXPAYER’S ID (CNPJ): 06.981.176/0001-58

COMPANY REGISTRY (NIRE): 31300020550

NOTICE TO THE MARKET

Conclusion of the Onerous Transfer of Four Small Power Plants

COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG (“CEMIG”), a publicly-held company with shares traded on the stock exchanges of São Paulo and New York, and CEMIG GERAÇÃO E TRANSMISSÃO S.A. (“CEMIG GT”), a publicly-held company and the wholly-owned subsidiary of CEMIG, hereby inform their shareholders and the market in general that, further to the Notice to the Market disclosed on February 21, 2025, CEMIG GT and its wholly-owned subsidiaries CEMIG GERAÇÃO LESTE S.A., CEMIG GERAÇÃO OESTE S.A., CEMIG GERAÇÃO SUL S.A. have completed today the Onerous Transfer of the Machado Mineiro, Sinceridade, Martins, and Marmelos power plants to ÂMBAR HIDROENERGIA LTDA (“ÂMBAR HIDROENERGIA”), after all conditions precedent under the Onerous Transfer Agreement were fulfilled.

The amount received from the divestment was R$52.4 million.

This Onerous Transfer aims to comply with the guidelines of CEMIG’s Strategic Plan, which seeks to optimize the portfolio and operational efficiency, with better capital allocation through the divestment of small-sized assets.

CEMIG and CEMIG GT reaffirm their commitment to keeping shareholders, the market in general, and other stakeholders duly and timely informed about this matter, in accordance with the rules issued by the CVM and the legislation in force.

Belo Horizonte, October 16, 2025.

Andrea Marques de Almeida

Vice President of Finance and Investor Relations

| 6. | 2Q Interim Financial Information

SUMMARY

FINANCIAL RESULT |
INTERIM FINANCIAL INFORMATION | 21
STATEMENTS OF FINANCIAL POSITION | 21
STATEMENTS OF INCOME | 23
STATEMENTS OF COMPREHENSIVE INCOME | 25
STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY | 26
STATEMENTS OF CASH FLOWS | 27
STATEMENTS OF ADDED VALUE | 29
NOTES TO THE INTERIM FINANCIAL INFORMATION | 30
1. OPERATING CONTEXT | 30
2. BASIS OF PREPARATION | 31
3. PRINCIPLES OF CONSOLIDATION | 32
4. OPERATING SEGMENTS | 32
5. CASH AND CASH EQUIVALENTS | 35
6. MARKETABLE SECURITIES | 35
7. RECEIVABLES FROM CUSTOMERS, TRADERS AND CONCESSION HOLDERS | 36
8. INCOME AND SOCIAL CONTRIBUTION TAXES | 37
9. CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES | 40
10. CONCESSION CONTRACT ASSETS | 43
11. INVESTMENTS | 45
12. PROPERTY, PLANT AND EQUIPMENT | 47
13. INTANGIBLE ASSETS | 47
14. LEASING | 48
15. SUPPLIERS | 49
16. TAXES PAYABLE AND AMOUNTS TO BE REFUNDED TO CUSTOMERS | 49
17. LOANS AND DEBENTURES | 50
18. POST-EMPLOYMENT OBLIGATIONS | 56
19. PROVISIONS | 58
20. EQUITY AND REMUNERATION TO SHAREHOLDERS | 60
21. NET REVENUE | 62
22. COSTS, EXPENSES AND OTHER REVENUE | 67
23. FINANCE INCOME AND EXPENSES | 71
24. RELATED PARTY TRANSACTIONS | 73
25. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT | 77
26. SALE OF ASSETS | 83
27. ASSETS CLASSIFIED AS HELD FOR SALE | 83
28. SUBSEQUENT EVENTS | 84
Report on Review of interim Financial Information – ITR | 87
OTHER INFORMATION THAT THE COMPANY BELIEVES TO BE MATERIAL | 89
DIRECTORS’ STATEMENT OF REVIEW OF THE INTERIM FINANCIAL INFORMATION | 97
DIRECTORS’ STATEMENT OF REVIEW OF THE REPORT BY THE EXTERNAL AUDITORS ON THE INTERIM FINANCIAL INFORMATION | 98

FINANCIAL RESULTS

(Amounts expressed in thousands of Reais, unless otherwise indicated)

(The information in this performance report has not been reviewed by the independent auditors)

Consolidated results

Net income for the quarter

Cemig’s net income in 2Q25 was R$1,188,281, 29.63% lower, compared to R$1,688,586 in 2Q24.

The main changes in revenues, costs, expenses and financial results, in a consolidated and segregated manner by segment, are presented below.

Earnings before interest, taxes, depreciation, and amortization (EBITDA)

EBITDA – Apr to Jun/2025 | Generation | Transmission | Trading | Distribution | Gas | Investee | Total
Net income for the year | 449,724 | (2,841) | 6,481) | 550,550 | 150,820 | 33,547 | 1,188,281
Income tax and Social Contribution tax | 31,781 | (36,693) | (3,961) | 147,391 | 71,765 | (20,474) | 189,809
Net financial revenue (expenses) | (15,614) | 3,207 | (4,121) | 257,444 | (4.533) | 26,577 | 262,960
Depreciation and amortization | 78,044 | 4,652 | 3 | 254,372 | 25,438 | 5,884 | 368,393
Ebitda according to “CVM Instruction n. 156” (1) | 543,935 | (31,675) | (1,598) | 1,209,757 | 243,490 | 45,534 | 2,009,443
Non-recurring and non-cash effects |  |  |  |  |  |  |
Net income attributable to non-controlling interests | - | - | - | - | (648) | - | (648)
Remeasurement of post-employment benefit liabilities (Note 18) | (2,302) | (1,422) | (326) | (16,163) | - | (948) | (21,161)
Remeasurement BNES (2) (Note 10) | - | 198,895 | - | - | - | - | 198,895
Voluntary Separation Program (Note 22c) | 1,920 | 1,187 | 272 | 20,812 | - | 1,200 | 25,391
Adjusted EBITDA (3) | 543,553 | 166,985 | (1,652) | 1,214,406 | 242,842 | 45,786 | 2,211,920

EBITDA – Apr to Jun/2024 | Generation | Transmission | Trading | Distribution | Gas | Investee | Total
Net income for the year | 315,039 | 108,947 | 101,008 | 1,060,437 | 137,823 | (34,668) | 1,688,586
Income tax and Social Contribution tax | 58,300 | 27,512 | (576) | 350,163 | 62,904 | (35,966) | 462,337
Net financial revenue (expenses) | 75,996 | 41,764 | (6,921) | (305,459) | 11,937 | 64,564 | (118,119)
Depreciation and amortization | 83,670 | (60) | 4 | 224,113 | 24,085 | 5,967 | 337,779
Ebitda according to “CVM Instruction n. 156” (1) | 533,005 | 178,163 | 93,515 | 1,329,254 | 236,749 | (103) | 2,370,583
Non-recurring and non-cash effects |  |  |  |  |  |  |
Net income attributable to non-controlling interests | - | - | - | - | (593) | - | (593)
Constitution of civil provisions - Purchase and sale of energy | - | - | 52,647 |  |  |  | (52,647)
Reversal of tax provisions - INSS s/ PLR | (30,503) | (32,967) | (5,049) | (513,331) | - | (2,500) | (584,350)
Voluntary Separation Program | 9,312 | 10,064 | 1,541 | 56,468 | - | 763 | 78,148
Adjusted EBITDA (2) | 511,814 | 155,260 | 142,654 | 872,391 | 236,156 | (1,840) | 1,916,435

| (1) | Ebitda is a non-accounting measure prepared by the Company, reconciled with the consolidated interim financial information in accordance with CVM Circular SNC/SEP n. 1/2007 and CVM Resolution n. 156 of June 23, 2022. It comprises Net income adjusted by the effects of net financial revenue (expenses), Depreciation and amortization, and Income and Social Contribution taxes. Ebitda is not a measure recognized by Brazilian GAAP nor by IFRS; it does not have a standard meaning; and it may be non-comparable with measures with similar titles provided by other companies. The Company publishes Ebitda because it uses it to measure its own performance. Ebitda should not be considered in isolation or as a substitution for net income or operational income, nor as an indicator of operational performance or cash flow, nor to measure liquidity nor the capacity for payment of debt.

| (2) | The Company adjusts the Ebitda for a better understanding of how its operating performance was impacted by extraordinary items which, because of their nature, do not contribute towards information on the potential of future cash generation.

2 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The Company’s Adjusted EBITDA decreased by 15.23%, primarily due to the recognition of a reduction in the contract asset, totaling R$198,895, net of PIS/Pasep and Cofins, resulting from the remeasurement of the Existing System Basic Network (RBSE), following the changes introduced by Homologation Resolution No. 3,469/2025. Further details are provided in the transmission segment performance commentary.

By excluding non-recurring effects through Adjusted EBITDA, there was a 15.42% increase, primarily driven by the following factors:

Recognition of tariff subsidy revenue in the amount of R$374,909, net of PIS/Pasep and Cofins, resulting from increased discounts granted by Cemig, primarily to the “Incentivized Source Load” and “GD II” customer classes. Further details are provided in the distribution segment performance commentary; and

The Company’s exposure to price differences between sub-markets, which negatively impacted the trading activity by R$69,091, net of PIS/Pasep and Cofins. Further details are provided in the trading segment performance commentary.

Net revenue

The breakdown of net revenue is as follows:

| Consolidated | Variation %
Apr to Jun/2025 | Apr to Jun/2024
Revenue from supply of energy - captive customers, in Cemig's concession area | 8,686,379 | 8,144,077 | 6.66
Revenue from use of the energy distribution systems (TUSD) - free customers | 1,414,496 | 1,251,554 | 13.02
CVA and Other financial components | 70,394 | (56,556) | (224.47)
Restitution of PIS/Pasep and Cofins credits to consumers - Realization | - | 190,186 | -
Revenues from transmission |  |  |
Revenues from operation and maintenance | 114,197 | 79,716 | 43.25
Revenue of transmission construction | 179,130 | 104,891 | 70.78
Financial remuneration of the transmission contract assets | 30,416 | 134,430 | (77.37)
Generation indemnity revenue | 31,201 | 20,596 | 51.49
Revenue of distribution construction | 1,324,446 | 1,154,213 | 14.75
Adjustment of cash flow expectation of the financial asset of distribution concession | 26,618 | 22,258 | 19.59
Revenues from financial actualization of the concession bonus | 118,859 | 107,011 | 11.07
Settlement in the CCEE | 39,585 | 14,380 | 175.28
Gas supply | 965,491 | 972,424 | (0.71)
Fine for violation of the continuity indicator standard | (39,949) | (37,084) | 7.73
Other revenues | 1,315,539 | 761,856 | 72.68
Taxes and charges levied on revenue | (3,490,507) | (3,427,961) | 1.82
Net revenues | 10,786,295 | 9,435,991 | 14.31

3 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Revenue from supply of energy - captive customers, in Cemig's concession area

The Company's gross electricity supply revenue is comprised of the delivery of energy to regulated consumers, free consumers, supply to other concessionaires, and energy offset through net metering by micro and mini distributed generation customers. This revenue increased by 6.66%, totaling R$8,686,379 in the second quarter of 2025, compared to R$8,144,077 in the second quarter of 2024, in line with a 9.36% growth in energy volume, as detailed below:

| Apr to Jun/2025 | Apr to Jun/2024 | Change, %
MWh (1) | R$ | Average price/MWh billed (R$/MWh) (2) | MWh | R$ | Average price/MWh billed (R$/MWh) (2) | MWh | R$
Residential | 3,667,850 | 3,374,148 | 919.93 | 3,552,969 | 3,066,719 | 863.14 | 3.23 | 10.02
Industrial | 4,676,668 | 1,278,269 | 273.33 | 4,440,313 | 1,326,674 | 298.78 | 5.32 | (3.65)
Commercial, Services and Others | 3,141,492 | 1,650,182 | 525.29 | 3,009,442 | 1,609,719 | 534.89 | 4.39 | 2.51
Rural | 984,250 | 643,413 | 653.71 | 927,534 | 599,558 | 646.40 | 6.11 | 7.31
Public authorities | 384,704 | 229,246 | 595.90 | 270,497 | 232,496 | 859.51 | 42.22 | (1.40)
Public lighting | 235,650 | 140,046 | 594.30 | 244,326 | 131,933 | 539.99 | (3.55) | 6.15
Public services | 58,262 | 146,260 | 2,510.38 | 235,023 | 174,633 | 743.05 | (75.21) | (16.25)
Subtotal | 13,148,876 | 7,461,564 | 567.47 | 12,680,104 | 7,141,732 | 563.22 | 3.70 | 4.48
Own consumption | 6,992 | - | - | 7,710 | - | - | (9.31) | -
Net unbilled retail supply | - | 77,702 | - | - | 68,410 | - | - | -
| 13,155,868 | 7,539,266 | 567.47 | 12,687,814 | 7,210,142 | 563,22 | 3.69 | 4.56
Wholesale supply to other concession holders (3) | 5,042,543 | 1,162,502 | 230.54 | 3,952,637 | 966,330 | 244,48 | 27.57 | 20.30
Wholesale supply unbilled, net | - | (15,389) | - | - | (32,395) | - | - | (52.50)
Total | 18,198,411 | 8,686,379 | 474.07 | 16,640,451 | 8,144,077 | 487,48 | 9.36 | 6.66

| (1) | Information not reviewed by the independent auditors

| (2) | The calculation of the average price does not include revenue from supply not yet billed.

| (3) | Includes Sale Contracts in the Regulated Market (CCEARs – Contratos de Comercialização de Energia no Ambiente Regulado) through the Surplus and Deficits Offsetting Mechanism (MSCD: Mecanismo de Compensação de Sobras e Déficits), sales on the Free Market, and the revenues from management of generation assets (GAG – Gestão de Ativos da Geração) for the 18 hydroelectric plants of Lot D of Auction no 12/2015.

The main variations in energy supply are described below:

4 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Residential

Residential energy consumption increased by 3.23% in the second quarter of 2025 compared to the second quarter of 2024, totaling 114,881 MWh. This variation is primarily driven by a 23.65% increase in the volume of energy offset through net metering by micro and mini distributed generation customers — 497,451 MWh in Q2 2025 versus 402,294 MWh in the same period of the previous year.

Industrial

Industrial grade consumption increased by 5.32%, or 236,355 MWh, in the second quarter of 2025, compared to the same period of the previous year. This growth is mainly composed of the following factors:

| § | An increase of 22.12%, or 442,185 MWh, in the supply of energy to free customers, due to the price adjustment of the contracts, which are mostly updated at the beginning of the year.

| § | On the other hand, there was a reduction of 35.69%, or 99,374 MWh, in the consumption of captive customers of the industrial class, mainly due to the migration of customers to the free market.

Commercial, services, and others

Consumption within this customer class increased by 4.39% in the second quarter of 2025 compared to the same period of the previous year. This growth was primarily driven by the retail segment, due to contract price adjustments, most of which are indexed and updated at the beginning of the fiscal year.

Revenue from use of network – Free Consumers

This is the revenue from charging Free Consumers the Tariff for Use of the Distribution System (Tarifa de Uso do Sistema de Distribuição, or TUSD) on the volume of energy distributed. In the second quarter of 2025, this revenue amounted to R$1,414,496, compared to R$1,251,554 in the second quarter of 2024, representing a 13.02% increase. This variation is primarily attributable to the annual tariff adjustment applied by the distribution company.

CVA and Other financial components in tariff adjustments

Cemig D recognizes in its interim financial statements the positive or negative variances between actual non-manageable costs and the estimated costs used as the basis for tariff setting. These balances represent amounts that must either be reimbursed to consumers or recovered by Cemig D in future tariff adjustments. The primary purpose of the CVA (Cost Variation Account) is to restore the economic and financial balance of distribution companies.

5 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

In the second quarter of 2025, a revenue of R$70,394 was recognized, compared to an expense of R$56,556 in the same period of 2024. This variation is mainly due to the increase in energy settlement costs at the CCEE (Electric Energy Trading Chamber).

More information on the composition and movement of CVA can be found in note 9.3.

Distribution Construction Revenue

The construction revenue, associated with construction of infrastructure for the distribution concession of energy and gas in 2Q25 totaled R$ 1,324, compared to R$ 1,154,213 in the same period of 2024, an increase of 14.75%. This variation is mainly due to the following factors:

§ |  | an increase in the number of projects, mainly related to electricity distribution networks, in line with the Distribution Development Plan (PDD), resulting in construction revenue of R$1,231,705 in the second quarter of 2025, compared to R$1,078,688 in the second quarter of 2024, an increase of 14.19%; and

§ |  | an increase in the number of projects carried out by Gasmig, in line with the Centro-Oeste Project, which foresees the construction of an additional 300 km of gas pipelines. In the second quarter of 2025, construction revenue totaled R$92,741, compared to R$75,525 in the same period of the previous year, an increase of 22.80%. The project is scheduled for completion in the second half of 2026.

These revenues is fully offset by construction costs, of the same amount, and corresponds to the investments by Cemig D and Gasmig in assets of the concession in the period.

6 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Transmission concession revenue

The Company’s transmission revenue is composed of: (i) Operation and Maintenance (O&M) Revenue; (ii) Construction Revenue and (iii) Financial Remuneration of the Contractual Asset.

This revenue totaled R$323,743 in the second quarter of 2025, compared to R$319,037 in the same period of the previous year, representing an increase of 1.48%.

Taxes and regulatory charges reported as deductions from revenue

Taxes and charges on revenue in 2Q25 totaled R$3,490,507, compared to R$3,427,961 in 2Q24 –a reduction of 1.82%.

Costs and expenses

Operational costs and expenses in 2Q25 were R$9,222,663, compared to R$7,441,898 in 2Q24, representing an increase of 23.93%. The main variations in components of this total are as described below.

Energy bought for resale

The cost of electricity purchased for resale is composed as follows:

The cost of energy purchased for resale in 2Q25 was R$4,547,303, which compares to R$3,693,227 in 2Q24, an increase of 23.13%. The main factors here were:

§ |  | There was a 30.46% increase in the cost of energy purchased in the free market, totaling R$1,656,838 in the second quarter of 2025, compared to R$1,269,988 in the second quarter of 2024. This increase was mainly due to the higher purchase volume required to offset energy deficits in relation to contracted commitments, as well as the rise in market prices in 2025.

7 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

§ |  | In the second quarter of 2025, there was a 268.29% increase in short-term energy costs, totaling R$489,394 compared to R$132,881 in the second quarter of 2024. This increase was mainly driven by the sharp rise in the PLD (Settlement Price for Differences) in the Southeast/Central-West submarket, which was not offset by the PLD in the Northeast and North submarkets.

|  | In the trading activity, the Company's exposure to price differences between submarkets negatively affected the results. Further details can be found in the 'Trading Segment Performance' section.

|  | In the distribution activity, the negative impact of this exposure is mitigated by the CVA mechanism, which is offset in the subsequent tariff adjustment. Additionally, the unfavorable hydrological scenario in the second quarter of 2025 resulted in a low average MRE (Energy Reallocation Mechanism) of 0.95, compared to 0.99 in the same period of the previous year, leading to an increase in the values passed through related to Hydrological Risk.

§ |  | a 21.22% increase in the cost of distributed generation, totaling R$846,075 in the second quarter of 2025, compared to R$697,974 in the second quarter of 2024. This variation is due to the increase in the number of generating installations (336,669 in the second quarter of 2025, compared to 273,174 in the second quarter of 2024) and the higher volume of energy injected into the grid (1,797 GWh in the second quarter of 2025, compared to 1,487 GWh in the second quarter of 2024).

8 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Revaluation of the Existing System Basic Network (RBSE)

In June 2025, Aneel published ReH No. 3,469, which amended the Allowed Annual Revenue (RAP) related to the financial component of the assets of the Existing System Basic Network (RBSE), previously approved by ReH No. 2,852/2021. As a result, the Company carried out a revaluation of the RBSE contractual asset, recording a reduction of R$219,168 in the contractual asset. Further details can be found in explanatory note No. 10.

Expected credit losses

In the second quarter of 2025, there was a 95.99% reduction in expected credit losses, amounting to R$3,098, compared to R$77,300 in the second quarter of 2024. This variation is mainly due to the change, effective from August 2024, in the time limit for full recognition of losses—from 24 to 36 months for regular consumption customers, and from 12 to 18 months for irregular consumption customers—in order to achieve a more accurate estimate of credit risk exposure for Cemig D's captive customers. This change is reflected over a 12-month period, impacting the second quarter of 2025. Additional information on the composition of costs, expenses, and other revenues is provided in explanatory note No. 22.

Net finance revenue

The financial result corresponded to a financial expense of R$262,960 in the second quarter of 2025, compared to a financial income of R$118,119 in the same period of 2024. This variation is mainly associated with the following factors:

| § | Monetary variation and debenture charges

The total monetary variation and debenture charges represented an expense of R$445,093 in the second quarter of 2025, compared to an expense of R$293,606 in the same period of 2024, representing a 51.60% increase. This variation is mainly due from the contracting of Cemig D’s 11th, 12th, and 13th debenture issuances, which increased the Company's debt level and, consequently, these expenses.

The composition of financial income and expenses is presented in explanatory note No. 23.

Update of taxes refundable to consumers

The update of tax credits related to PIS/Pasep and Cofins, resulting from the exclusion of ICMS from their calculation basis, and of the liability refundable to consumers is presented at net value.

A net financial income of R$4,345 was recognized in the second quarter of 2025, compared to a net financial income of R$406,414 in the same period of the previous year. In the second quarter of 2024, the remaining balance of the liability 'Amounts refundable to consumers' was written off, as it had been returned through tariff revisions, with a corresponding entry in the financial result, which increased the financial result for that period.

9 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Income tax and social contribution

In 2Q25 the Company posted an expense on income tax and the Social Contribution tax of R$189,809 (R$462,337 in 2Q24), on pre-tax income of R$1,378,090 (R$2,150,923 in 2Q24) – an effective rate of 13.77% (21.49in 2Q24).

The effective rates are reconciled with the nominal rates in Note 8d.

Results by segment

The results presented separately by segment do not consider eliminations from the consolidated operations between the segments.

Distribution segment performance

For 2Q25 Cemig’s electricity distribution operations posted net income of R$550,554, compared to R$1,060,436 in 2Q24, representing a reduction of 48.08%. The main changes are presented below.

Ebitda - Distribution | Apr to Jun/2025 (R$) | Apr to Jun/2024 (R$) | Variation (%)
Net Income for the Period | 550,550 | 1,060,437 | -48.08
Income Tax and Social Contribution Expense | 147,391 | 350,163 | -57.91
Financial Result | 257,444 | (305,459) |
Depreciation and Amortization | 254,372 | 224,113 | 13.5
EBITDA (per CVM Resolution 156) | 1,209,757 | 1,329,254 | -8.99
Non-recurring and Non-cash Effects |  |  |
Post-employment Liability Remeasurement | (16,163) | - | -
Voluntary Termination Program | 20,812 | 56,468 | -63.14
Reversal of Tax Provisions - INSS on Profit Sharing (Note 22) | 0 | (513,331) |
Adjusted EBITDA | 1,214,406 | 872,391 | 39.20

10 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Net revenue

Net revenue for this segment increased by 14.91%, reaching R$7,269,939 in the second quarter of 2025 compared to R$6,326,844 in the same period of 2024. The main variations are presented below:

Revenue from supply of electricity

Cemig D's revenue from the supply of electricity is composed of energy delivered to captive consumers and energy compensated through micro and mini distributed generation by customers. This revenue was R$6,090,187 in the second quarter of 2025, compared to R$5,881,556 in the second quarter of 2024, representing an increase of 3.55%. This variation mainly due to the following factors:

§ |  | increase of 4.27% in the average billed price per MWh (R$853.44/MWh in the second quarter of 2025 compared R$805.82 in the same period of 2024), primarily due to the annual tariff adjustment of Cemig D, effective as of May 28, 2024;

§ |  | increase of 3.23% in electricity consumption by the residential segment, mainly driven from the increase in the amount of energy compensated by customers through micro and mini distributed generation; and

§ |  | On the other hand, there was a 35.69% reduction in the industrial class due to the migration of captive consumers to the free market.

11 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Revenue from charging - Free Consumers

Increase of 12.92% on revenue from charging Free Consumers the Tariff for Use of the Distribution System (Tarifa de Uso do Sistema de Distribuição, or TUSD) resulting from the charges imposed on free consumers for the use of distributed energy. In 2Q25 this revenue was R$1,424,464, compared to R$1,261,441 for the same period in the previous year. This variation results primarily due to the distributor's annual tariff adjustment.

Construction revenue

The Construction revenues associated with construction of infrastructure for the distribution concession totaled R$1.231.705 in 2Q25, compared to R$1.078.688 in the same period in the previous year, showing an increase of 14.19%. This variation is basically due to the increase in the number of works due to the Distribution Development Plan (Plano de Desenvolvilmenot da Distribuição, or PDD), mainly in distribution networks. This revenue is fully offset by construction costs and corresponds to the Cemig D’s investments in assets of the concession.

Costs and expenses

Total costs and expenses for the distribution segment amounted to R$6,314,552 in the second quarter of 2025, compared to R$5,221,703 in the same period of 2024, representing an increase of 20.93%. The main changes are presented below.

Cost of electricity purchased for resale

There was a 14.65% increase in the cost of electricity purchased for resale, totaling R$2,917,439 in the second quarter of 2025, compared to R$2,544,751 in the second quarter of 2024. This variation is mainly associated with the following factors:

§ |  | An increase of 173.92% in short-term energy costs, totaling R$333,854 in the second quarter of 2025 compared to R$121,879 in the same period of 2024. This variation was mainly due to the sharp rise in the PLD (Settlement Price for the Difference) in the Southeast/Central-West submarket, which was not offset by the PLD in the Northeast and North submarkets. Additionally, the unfavorable hydrological scenario resulted in a low MRE (Energy Reallocation Mechanism). In the distribution activity, the negative effect of this exposure is mitigated by the CVA mechanism, being compensated in the subsequent tariff adjustment. Additionally, the unfavorable hydrological scenario in the second quarter of 2025 resulted in a low average MRE (Energy Reallocation Mechanism) of 0.95, compared to 0.99 in the same period of the previous year.

§ |  | A increase of 21.22% in distributed generation costs, totaling R$846,075 in the second quarter of 2025, compared to R$697,973 in the same period of 2024, mainly due to the increase in the number of generating installations and the volume of energy injected into the grid.

12 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The costs of electricity purchased for resale are non-manageable, and the difference between the reference values used to define tariffs and the actual costs incurred is compensated in the subsequent tariff adjustment.

Expected Credit Losses

In the second quarter of 2025, there was a reduction of 96.99% in expected credit losses, totaling a provision of R$2,184, compared to a provision of R$72,477 in the same period of the previous year. This difference is primarily due to the change, effective from August 2024, in the recognition period limit for losses, which increased from 24 to 36 months for regular consumption customers, and from 12 to 18 months for irregular consumption customers, aiming to achieve a more accurate estimate of credit risk exposure for Cemig D's captive consumers. This change is reflected over a 12-month period, impacting the second quarter of 2025.

Provisions for contingencies

Cemig D recognized provisions for contingencies in the amount of R$86,353 in the second quarter of 2025, compared to a net reversal of R$459,529 in the same period of 2024.

The main variation occurred in tax-related contingencies, due to the recognition of a provision reversal of R$513,331 in the second quarter of 2024, following a favorable first-instance court decision for the Company, which ordered the cancellation of the charge and the termination of the tax enforcement process related to social security contributions on Profit Sharing (PLR).

Net financial result

In the second quarter of 2025, the financial result for this segment was a net expense of R$257,443, compared to a revenue of R$305,458 in the same period of the previous year. This variation is mainly associated with the increase in charges and monetary restatement of debentures, resulting from the issuance of the 11th, 12th and 13th series of debentures, which raised Cemig D’s debt level and, consequently, its financial expenses.

More detailed information on the variations and impacts presented in this segment is available in Cemig D’s interim financial statements.

Performance of the Transmission Segment

The transmission segment recorded a loss of R$2,841 in the second quarter of 2025, compared to a net profit of R$108,947 in the second quarter of 2024. The main variations are described below.

Ebitda - Transmission | Apr to Jun/2025 (R$) | Apr to Jun/2024 (R$) | Variation (%)
Net Income for the Period | (2,841) | 108,947 | –
Income Tax and Social Contribution Expense | (36,693) | 27,512 | –
Financial Result | 3,207 | 41,764 | -92.32%
Depreciation and Amortization | 4,652 | (60) | –
EBITDA – per CVM Resolution 156 | (31,675) | 178,163 | –
Non-recurring and Non-cash Effects |  |  |
Post-employment Liability Remeasurement | (1,422) | – | –
RBSE Remeasurement (Note 10) | 198,895 | – | –
Voluntary Termination Program | 1,187 | 10,064 | -88.21%
Reversal of Tax Provisions – INSS on Profit Sharing (Note 22) | – | (32,967) | –
Adjusted EBITDA | 166,985 | 155,260 | 7.55%

13 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The reduction in EBITDA for the transmission segment is mainly associated with the recognition of a decrease in the contract asset, in the amount of R$198,895, net of PIS/Pasep and Cofins, resulting from the remeasurement of the Existing System Basic Network (RBSE), due to changes introduced by Homologation Resolution No. 3,469/2025. Further details can be found in explanatory note No. 10.

Transmission concession revenue

The Company’s transmission revenue is composed of: (i) operation and maintenance revenue, (ii) construction revenue, and (iii) financial remuneration of the contractual asset.

Construction, reinforcement, and infrastructure improvement revenues totaled R$179,130 in the second quarter of 2025, compared to R$104,891 in the same period of 2024, representing a 70.78% increase. This variation is primarily due to the higher volume of investments in reinforcement and improvement works, project development, and the significant supply of high-value equipment.

14 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Construction costs

The transmission construction cost amounted to R$138,924 in the second quarter of 2025, compared to R$72,720 in the same period of 2024, representing an increase of 91.04%. The variation in value mainly reflects the largest volume was invested in reinforcement and improvement works, in the development of projects, with a significant supply of equipment that carries high financial value.

Remeasurement of the Existing System's Basic Network (RBSE)

In June 2025, ANEEL published Resolution No. 3,469, which amended the Allowed Annual Revenue (RAP) related to the financial component of the assets of the Existing System's Basic Network (RBSE), previously approved by Resolution No. 2,852/2021. As a result, the Company carried out the remeasurement of the RBSE contract asset, recording a reduction of R$219,168 in the contract asset. Further details can be found in explanatory note No. 10.

Finance income (expenses)

The transmission segment recorded a net financial expense of R$3,207 in the second quarter of 2025, compared to a net financial expense of R$41,764 in the same period of the previous year, representing a 92.32% reduction. Until December 2024, the Company recorded foreign exchange variation on loans related to Eurobonds. In accordance with the Company's policy, the allocation of this expense across segments impacted Generation, Transmission, and Equity Interests. The settlement of the Eurobonds in December 2024 eliminated Cemig’s exposure.

Detailed information on the variations and impacts presented in this segment is available in Cemig GT’s interim financial statements.

Performance of the Generation Segment

The generation segment reported a net income of R$449,724 in the second quarter of 2025, compared to R$315,039, representing a 42.75% increase, mainly due to changes in the financial result for the period.

This segment recorded net financial income of R$15,614 in the second quarter of 2025, compared to net financial expenses of R$75,996 in the same period of the previous year. Until December 2024, the Company accounted for exchange rate variations on loans related to Eurobonds. The allocation of this expense by segment, in accordance with the Company's policy, impacted the Generation, Transmission, and Holdings segments. The settlement of the Eurobonds in December 2024 eliminated Cemig’s exposure.

15 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA)

EBITDA – Generation Segment | Apr to jun/2025 | Apr to jun/2024 | Variation %
Net Income for the Period | 449,724 | 315,039 | 42.75%
Income Tax and Social Contribution Expense | 31,781 | 58,300 | -45.49%
Financial Result | (15,614) | 75,996 | -
Depreciation and Amortization | 78,044 | 83,670 | -6.72%
EBITDA According to CVM Resolution 156 | 543,935 | 533,005 | 2.05%
Non-Recurring and Non-Cash Effects |  |  |
Remeasurement of Post-Employment Benefit Liabilities | (2,302) | - | -
Voluntary Termination Program | 1,920 | 9,312 | -79.38%
Reversal of Tax Provisions – INSS on Profit Sharing (Note 22) | - | (30,503) | -
Adjusted EBITDA | 543,553 | 511,814 | 6.20%

The EBITDA evolution is as follows:

Detailed information on the variations and impacts presented in this segment is available in Cemig GT’s interim financial statements.

Performance of the Trading Segment

The Trading Segment recorded a net profit of R$6,481 in the second quarter of 2025, compared to R$101,008 in the second quarter of 2024, representing a 93.58% decrease. This variation is mainly due to the increase in short-term electricity costs, primarily driven by the Company's exposure to price differences between submarkets.

EBITDA – Trading Segment | Apr to jun/2025 | Apr to jun/2024 | Variation %
Net Income for the Period | 6,481 | 101,008 | -93,58%
Income Tax and Social Contribution Expense | (3,961) | (576) | 587,67%
Financial Result | (4,121) | (6,921) | -40,46%
Depreciation and Amortization | 3 | 4 | -25,00%
EBITDA According to CVM Resolution 156 | (1,598) | 93,515 | -
Non-Recurring and Non-Cash Effects |  |  |
Remeasurement of Post-Employment Benefit Liabilities | (326) | - | -
Recognition of Civil Provisions – Energy Purchase and Sale | - | 52,647 | -
Voluntary Termination Program | 272 | 1,541 | -82,35%
Reversal of Tax Provisions – INSS on Profit Sharing (Note 22) | - | (5,049) | -
Adjusted EBITDA | (1,652) | 142,654 | -

16 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The cost of electricity purchased for resale amounted to R$1,950,946 in the second quarter of 2025, compared to R$1,469,585 in the second quarter of 2024, representing a 32.75% increase. The main reasons for this increase are detailed below.

Electricity Costs – Price Differences Between Submarkets

Due to transmission constraints, flow optimization, and system balancing, the National Interconnected System (Sistema Interligado Nacional, or SIN) is divided into four submarkets: South (S), Southeast/Central-West (SE/CO), Northeast (NE), and North (NO).

In addition to its own resources, the Company also relies on energy acquired from third parties to meet market demand. Since 2018, the Company has contracted an average of 900 MW from solar and wind energy projects located in the Northeast to supply most of its load, which is concentrated in the South and Southeast/Central-West submarkets. The current composition of the Company’s energy portfolio results in a surplus in the Northeast submarket and a deficit in the Southeast/Central-West submarket. Due to transmission constraints between submarkets, short-term prices may vary across regions.

The price received for the sale of surplus energy in the Northeast and the price paid for energy acquired to cover the deficit in the South and Southeast/Central-West is measured by the PLD (Settlement Price for the Differences) established for each of these submarkets. When the PLD is the same across submarkets, there is no impact on the Company’s results. However, in the second quarter, due to transmission constraints between submarkets, combined with changes in the system operation planning model and low inflows, there was a price divergence among the submarkets.

17 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The PLDs (Settlement Prices for the Differences) observed for the second quarter of 2025 and 2024 are as follows:

| Southeast/Central-West (SE/CO) | South (S) | Northeast (NE) | North (NO)
April 2024 | 61.07 | 61.07 | 61.07 | 61.07
May 2024 | 61.07 | 61.07 | 61.07 | 61.07
June 2024 | 66.41 | 66.40 | 66.40 | 66.41
April 2025 | 202.18 | 202.98 | 107.28 | 107.27
May 2025 | 212.58 | 233.39 | 124.98 | 125.19
June 2025 | 234.71 | 236.10 | 230.90 | 232.29

As presented in the previous table, during the second quarter of 2024, despite the Company's exposure to submarkets, there was no difference between the PLDs of the SE/CO, South, and Northeast submarkets, resulting in no impact on earnings. In the second quarter of 2025, however, the price differences between submarkets negatively affected the Company's results by R$76,133, increasing short-term energy purchase costs. This amount represents the residual effect between the sale of surplus energy in the Northeast and the purchase of energy in the South and Southeast submarkets.

The following chart details the Company’s exposure, in average MW (MWm), and the price difference between the SE/CO and South submarkets (analyzed jointly) compared to the Northeast submarket.

Performance of the Gas Segment

The Gas Segment recorded a net profit of R$150,820 in the second quarter of 2025, compared to R$137,823 in the second quarter of 2024, an increase of 9.43%. This variation was mainly driven by changes in financial results.

In the second quarter of 2025, the Gas Segment recorded financial income of R$4,533, compared to financial expenses of R$11,937 in the same period of the previous year. In fiscal year 2024, Gasmig did not have financial operations with interest eligible for capitalization. In December 2024, with the 9th debenture issuance, Gasmig raised funds for investments in its distribution network. The interest accrued on the operation was fully allocated to assets under construction during the period, resulting in improved financial performance.

18 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Ebitda - Gas Segment | Apr–Jun/2025 (R$) | Apr–Jun/2024 (R$) | Variation (%)
Net Income for the Period | 150,820 | 137,823 | 9.43%
Income Tax and Social Contribution Expense | 71,765 | 62,904 | 14.09%
Financial Result | (4,533) | 11,937 | –
Depreciation and Amortization | 25,438 | 24,085 | 5.62%
EBITDA – per CVM Resolution 156 | 243,490 | 236,749 | 2.85%
Non-recurring and Non-cash Effects |  |  |
Net Income Attributable to Non-controlling Shareholders | (648) | (593) | 9.27%
Adjusted EBITDA | 242,842 | 236,156 | 2.83%

Additional detailed information regarding the variations and impacts presented in this segment is available in Gasmig’s interim financial statements.

Equity interests, and the holding company

The Equity Interests and Holding Segment recorded a net profit of R$33,547 in the second quarter of 2025, compared to a net loss of R$34,668 in the second quarter of 2024.

Adjusted EBITDA – Holding/Investments Segment | Apr–Jun/2025 (R$) | Apr–Jun/2024 (R$) | Variation (%)
Net Income for the Period | 33,547 | (34,668) | –
Income Tax and Social Contribution Expense | (20,474) | (35,966) | –
Financial Result | 26,577 | 64,564 | -58.84%
Depreciation and Amortization | 5,884 | 5,967 | -1.39%
EBITDA – per CVM Resolution 156 | 45,534 | (103) | –
Non-recurring and Non-cash Effects |  |  |
Post-employment Liability Remeasurement | (948) | – | –
Voluntary Termination Program | 1,200 | 763 | 57.27%
Reversal of Tax Provisions – INSS on Profit Sharing | – | (2,500) | –
Adjusted EBITDA | 45,786 | (1,840) | –

19 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

This variation is mainly associated with the higher equity method result recorded for the jointly controlled entity Taesa, which amounted to R$106,957 in the second quarter of 2025, compared to R$51,707 in the same period of the previous year.

20 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

INTERIM FINANCIAL INFORMATION

STATEMENTS OF FINANCIAL POSITION

AS OF JUNE 30, 2025, AND DECEMBER 31, 2024

ASSETS

(In thousands of Brazilian Reais)

| Note | Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
CURRENT |  |  |  |  |
Cash and cash equivalents | 5 | 1,757,787 | 1,898,224 | 134,464 | 417,258
Marketable securities | 6 | 1,221,070 | 357,913 | 291,356 | 3,743
Receivables from customers, traders and concession holders | 7 | 5,651,867 | 5,596,248 | 421,758 | 454,286
Concession financial assets | 9 | 1,232,360 | 1,190,020 | - | -
Concession contract assets | 10 | 1,109,923 | 1,140,037 | - | -
Recoverable taxes |  | 551,193 | 510,963 | 3,515 | 1,687
Income tax and social contribution tax credits | 8a | 152,812 | 7,283 | - | -
Dividends receivables | 24 | 63,382 | 111,367 | 2,192,679 | 2,088,913
Restricted Funds | 17 | 45,106 | 235,206 | 2,514 | 11,465
Public lighting contribution |  | 327,073 | 296,061 | - | -
Reimbursement of tariff subsidies |  | 623,470 | 208,688 | - | -
Other assets |  | 819,038 | 623,708 | 38,051 | 55,566
|  | 13,555,081 | 12,175,718 | 3,084,337 | 3,032,918
Assets classified as held for sale | 27 | 57,114 | 56,864 | - | -
TOTAL CURRENT |  | 13,612,195 | 12,232,582 | 3,084,337 | 3,032,918
NON-CURRENT |  |  |  |  |
Long-term assets |  | 24,985,060 | 23,365,059 | 2,506,907 | 2,338,017
Marketable securities | 6 | 56,439 | 134,606 | 14,284 | 1,215
Receivables from customers, traders and concession holders | 7 | 276,672 | 253,925 | 2,829 | 3,863
Recoverable taxes |  | 1,507,199 | 1,454,662 | 576,003 | 564,822
Income tax and social contribution tax recoverable | 8a | 511,669 | 582,348 | 323,037 | 239,102
Deferred income tax and social contribution tax | 8c | 2,348,044 | 2,333,721 | 1,155,644 | 1,089,940
Escrow deposits |  | 1,207,197 | 1,196,083 | 318,445 | 324,763
Reimbursement of tariff subsidies |  | 15,620 | - | - | -
Accounts receivable from the State of Minas Gerais | 24 | 34,987 | 40,393 | 34,987 | 40,393
Concession financial assets | 9 | 7,642,329 | 6,881,394 | - | -
Concession contract assets | 10 | 11,243,748 | 10,326,877 | - | -
Other assets |  | 141,156 | 161,050 | 81,678 | 73,919
Investments - Equity method | 11 | 3,275,291 | 3,221,020 | 27,227,104 | 27,054,069
Property, plant and equipment | 12 | 3,910,084 | 3,715,105 | 656 | 713
Intangible assets | 13 | 17,247,304 | 16,805,900 | 5,332 | 4,004
Leasing - right of use assets | 14a | 381,295 | 387,170 | 2,359 | 2,417
TOTAL NON-CURRENT |  | 49,799,034 | 47,494,254 | 29,742,358 | 29,399,220
TOTAL ASSETS |  | 63,411,229 | 59,726,836 | 32,826,695 | 32,432,138

The accompanying notes are an integral part of these interim financial information.

21 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

STATEMENTS OF FINANCIAL POSITION

AS OF JUNE 30, 2025, AND DECEMBER 31, 2024

LIABILITIES

(In thousands of Brazilian Reais)

| Note | Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
CURRENT |  |  |  |  |
Suppliers | 15 | 3,080,310 | 2,951,571 | 370,204 | 354,177
Regulatory charges |  | 462,985 | 343,944 | - | -
Profit sharing |  | 92,893 | 111,045 | 11,487 | 18,398
Taxes payable | 16 | 749,371 | 724,521 | 137,322 | 133,146
Income tax and social contribution | 8b | 159,260 | 162,975 | - | -
Interest on equity and dividends payable |  | 2,865,571 | 3,611,198 | 2,862,904 | 3,608,821
Debentures | 17 | 2,747,228 | 2,876,548 | - | -
Payroll and related charges |  | 255,802 | 217,415 | 13,573 | 11,782
Public lighting contribution |  | 496,942 | 475,032 | - | -
Accounts payable related to energy generated by residential consumers |  | 1,640,563 | 1,251,298 | - | -
Post-employment obligations | 18 | 218,428 | 232,898 | 25,839 | 20,406
Concession financial liabilities | 9 | - | 16,470 | - | -
Amounts to refund to customers | 16 | 371,510 | 526,499 | - | -
Leasing liabilities | 14b | 86,030 | 79,228 | 233 | 233
Other liabilities |  | 446,189 | 565,166 | 42,641 | 44,373
TOTAL CURRENT |  | 13,673,082 | 14,145,808 | 3,464,203 | 4,191,336
NON-CURRENT |  |  |  |  |
Regulatory charges |  | 128,466 | 171,893 | 4,624 | 4,624
Debentures | 17 | 12,516,709 | 9,402,752 | - | -
Taxes payable | 16 | 487,885 | 496,253 | - | -
Deferred income tax and social contribution | 8c | 1,421,542 | 1,543,290 | - | -
Provisions | 19 | 1,959,945 | 1,853,043 | 346,870 | 333,908
Post-employment obligations | 18 | 4,117,758 | 4,072,608 | 533,309 | 519,931
Amounts to refund to customers | 16 | 158,531 | 166,089 | - | -
Leasing liabilities | 14b | 340,262 | 349,972 | 2,547 | 2,579
Other liabilities |  | 128,189 | 142,049 | 1,975 | 1,974
TOTAL NON-CURRENT |  | 21,259,287 | 18,197,949 | 889,325 | 863,016
TOTAL LIABILITIES |  | 34,932,369 | 32,343,757 | 4,353,528 | 5,054,352
EQUITY |  |  |  |  |
Share capital | 20 | 14,308,909 | 14,308,909 | 14,308,909 | 14,308,909
Capital reserves |  | 393,093 | 393,093 | 393,093 | 393,093
Profit reserves |  | 13,575,648 | 13,575,648 | 13,575,648 | 13,575,648
Equity valuation adjustments |  | (898,517) | (899,864) | (898,517) | (899,864)
Retained earnings |  | 1,094,034 | - | 1,094,034 | -
EQUITY ATTRIBUTABLE TO EQUITY HOLDERS OF THE PARENT |  | 28,473,167 | 27,377,786 | 28,473,167 | 27,377,786
Non-Controlling interests |  | 5,693 | 5,293 | - | -
TOTAL EQUITY |  | 28,478,860 | 27,383,079 | 28,473,167 | 27,377,786
TOTAL LIABILITIES AND EQUITY |  | 63,411,229 | 59,726,836 | 32,826,695 | 32,432,138

The accompanying notes are an integral part of these interim financial information.

22 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

INCOME STATEMENTS

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais, except earnings per share)

| Note | Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024

NET REVENUE | 21 | 20,630,526 | 18,493,858 | 1,976,693 | 1,952,784
COSTS |  |  |  |  |
Cost of energy and gas | 22a | (11,331,859) | (9,883,222) | (1,874,653) | (1,568,732)
Infrastructure and construction cost | 22b | (2,665,235) | (2,147,914) | - | -
Operating costs | 22c | (2,642,633) | (1,933,575) | (12,030) | (11,940)
|  | (16,639,727) | (13,964,711) | (1,886,683) | (1,580,672)
GROSS PROFIT |  | 3,990,799 | 4,529,147 | 90,010 | 372,112
EXPENSES AND OTHER REVENUE |  |  |  |  |
Expected credit losses | 22c | (53,726) | (153,153) | 87 | (9,309)
General and administrative expenses | 22c | (371,569) | (375,446) | (36,671) | (20,956)
Other expenses | 22c | (580,594) | (457,253) | (73,894) | (77,515)
Other revenue | 22d | - | 42,989 | - |
|  | (1,005,889) | (942,863) | (110,478) | (107,780)
Share of profit, net, of affiliates, subsidiaries and joint ventures | 11 | 119,537 | 129,212 | 2,211,366 | 2,593,461
Income before financial revenue (expenses) and taxes |  | 3,104,447 | 3,715,496 | 2,190,898 | 2,857,793
Finance income | 23 | 485,442 | 927,008 | (29,476) | 26,961
Finance expenses | 23 | (998,033) | (989,875) | (859) | (306)
|  | (512,591) | (62,867) | (30,335) | 26,655
Income before income tax and social contribution tax |  | 2,591,856 | 3,652,629 | 2,160,563 | 2,884,448
Current income tax and social contribution tax | 8d | (508,224) | (409,241) | - | (41,436)
Deferred income tax and social contribution tax | 8d | 143,389 | (401,911) | 65,318 | (2,631)
|  | (364,835) | (811,152) | 65,318 | (44,067)
NET INCOME FOR THE PERIOD |  | 2,227,021 | 2,841,477 | 2,225,881 | 2,840,381
Total of net income for the period attributed to: |  |  |  |  |
Equity holders of the parent |  | 2,225,881 | 2,840,381 | 2,225,881 | 2,840,381
Non-controlling interests |  | 1,140 | 1,096 | - | -
|  | 2,227,021 | 2,841,477 | 2,225,881 | 2,840,381
Basic and diluted earnings per preferred share - R$ | 20 | 0,78 | 0.99 |  |
Basic and diluted earnings per common share - R$ | 20 | 0,78 | 0.99 |  |

The accompanying notes are an integral part of these interim financial information.

23 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

INCOME STATEMENTS

FOR THE THREE-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais, except earnings per share)

| Note | Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
NET REVENUE | 21 | 10,786,295 | 9,435,991 | 1,032,471 | 942,588
COSTS |  |  |  |  |
Cost of energy and gas | 22a | (5,809,115) | (5,019,191) | (948,688) | (773,477)
Infrastructure and construction cost | 22b | (1,463,371) | (1,226,933) | - | -
Operating costs | 22c | (1,363,676) | (686,180) | (5,867) | (5,990)
|  | (8,636,162) | (6,932,304) | (954,555) | (779,467)
GROSS PROFIT |  | 2,150,133 | 2,503,687 | 77,916 | 163,121
EXPENSES AND OTHER REVENUE |  |  |  |  |
Expected credit losses | 22c | (3,098) | (77,300) | 28 | (3,315)
General and administrative expenses | 22c | (177,602) | (205,700) | (14,064) | (5,437)
Other expenses | 22c | (405,801) | (226,594) | (43,763) | (48,895)
|  | (586,501) | (509,594) | (57,799) | (57,647)
Share of profit, net, of affiliates, subsidiaries and joint ventures |  | 77,418 | 38,711 | 1,166,096 | 1,578,346
Income before financial revenue (expenses) and taxes |  | 1,641,050 | 2,032,804 | 1,186,213 | 1,683,820
Finance income | 23 | 302,444 | 725,474 | (13,578) | 13,885
Finance expenses | 23 | (565,404) | (607,355) | (81) | (96)
|  | (262,960) | 118,119 | (13,659) | 13,789
Income before income tax and social contribution tax |  | 1,378,090 | 2,150,923 | 1,172,554 | 1,697,609
Current income tax and social contribution tax | 8d | (249,538) | (149,309) | - | (10,930)
Deferred income tax and social contribution tax | 8d | 59,729 | (313,028) | 15,079 | 1,314
|  | (189,809) | (462,337) | 15,079 | (9,616)
NET INCOME FOR THE PERIOD |  | 1,188,281 | 1,688,586 | 1,187,633 | 1,687,993
Total of net income for the period attributed to: |  |  |  |  |
Equity holders of the parent |  | 1,187,633 | 1,687,993 | 1,187,633 | 1,687,993
Non-controlling interests |  | 648 | 593 | - | -
|  | 1,188,281 | 1,688,586 | 1,187,633 | 1,687,993
Basic and diluted earnings per preferred share - R$ | 20 | 0,42 | 0.59 |  |
Basic and diluted earnings per common share - R$ | 20 | 0,42 | 0.59 |  |

The accompanying notes are an integral part of these interim financial information.

24 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

STATEMENTS OF COMPREHENSIVE INCOME

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais)

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
NET INCOME FOR THE PERIOD | 2,227,021 | 2,841,477 | 2,225,881 | 2,840,381
OTHER COMPREHENSIVE INCOME |  |  |  |
Items that will not be reclassified to profit or loss in subsequent periods |  |  |  |
Post retirement liabilities - remeasurement of obligations of the defined benefit plans | 11,006 | - | (1,134) | -
Income tax and social contribution tax on remeasurement of defined benefit plans | (3,742) | - | 386 | -
Equity gain (loss) on other comprehensive income in subsidiary and jointly controlled entity | - | - | 8,012 | -
Other comprehensive income | - | (734) | - | (734)
| 7,264 | (734) | 7.264 | (734)
COMPREHENSIVE INCOME FOR THE PERIOD, NET OF TAXES | 2,234,285 | 2,840,743 | 2,233,145 | 2,839,647
Total of comprehensive income for the period attributed to: |  |  |  |
Equity holders of the parent | 2,233,145 | 2,839,647 | 2,233,145 | 2,839,647
Non-controlling interests | 1.140 | 1.096 | - | -
| 2,234,285 | 2,840,743 | 2,233,145 | 2,839,647

The accompanying notes are an integral part of these interim financial information.

STATEMENTS OF COMPREHENSIVE INCOME

FOR THE THREE-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais)

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
NET INCOME FOR THE PERIOD | 1,188,281 | 1,688,586 | 1,187,633 | 1,687,993
OTHER COMPREHENSIVE INCOME |  |  |  |
Items that will not be reclassified to profit or loss in subsequent periods |  |  |  |
Post retirement liabilities - remeasurement of obligations of the defined benefit plans | (48,731) | - | (5,791) | -
Income tax and social contribution tax on remeasurement of defined benefit plans | 16,568 | - | 1,969 | -
Equity gain (loss) on other comprehensive income in subsidiary and jointly controlled entity | - | - | (28,341) | -
| (32,163) | - | (32,163) | -
COMPREHENSIVE INCOME FOR THE PERIOD, NET OF TAXES | 1,156,118 | 1,688,586 | 1,155,470 | 1,687,993
Total of comprehensive income for the period attributed to: |  |  |  |
Equity holders of the parent | 1,155,470 | 1,687,993 | 1,155,470 | 1,687,993
Non-controlling interests | 648 | 593 | - |
| 1,156,118 | 1,688,586 | 1,155,470 | 1,687,993

The accompanying notes are an integral part of these interim financial information.

25 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais, except where otherwise indicated)

| Share capital | Capital reserves | Profit reserves | Equity valuation adjustments | Retained earnings | Total controlling interests | Non-controlling interests | Total Equity
Legal reserve | Tax incentive reserve | Retained Earnings reserve | Unrealized Earnings reserve | Deemed cost of PP&E | Other Comprehensive income
BALANCES ON DECEMBER 31, 2023 | 11,006,853 | 2,249,721 | 1,674,667 | 212,868 | 10,318,598 | 834,603 | 421,270 | (2,069,345) | - | 24,649,235 | 5,958 | 24,655,193
Net income for the period | - | - | - | - | - | - | - | - | 2,840,381 | 2,840,381 | 1,096 | 2,841,477
Other comprehensive income | - | - | - | - | - | - | - | (734) | - | (734) | - | (734)
Comprehensive income for the period | - | - |  | - | - | - | - | (734) | 2,840,381 | 2,839,647 | 1,096 | 2,840,743
Capital increase | 3,302,056 | (1,856,628) | - | - | (1,445,428) | - | - | - | - | - | - | -
Realization of PP&E deemed cost | - | - | - | - | - | - | (12,319) | - | 12,319 | - | - | -
Interest on equity | - | - | - | - | - | - | - | - | (816,046) | (816,046) | - | (816,046)
Non-controlling interests | - | - | - | - | - | - | - | - | - | - | (2,266) | (2,266)
BALANCES ON JUNE 30, 2024 | 14,308,909 | 393,093 | 1,674,667 | 212,868 | 8,873,170 | 834,603 | 408,951 | (2,070,079) | 2,036,654 | 26,672,836 | 4,788 | 26,677,624
BALANCES ON DECEMBER 31, 2024 | 14,308,909 | 393,093 | 2,024,818 | 327,004 | 10,389,223 | 834,603 | 404,798 | (1,304,662) | - | 27,377,786 | 5,293 | 27,383,079
Net income for the period | - | - | - | - | - | - | - | - | 2,225,881 | 2,225,881 | 1,140 | 2,227,021
Other comprehensive income |  |  |  |  |  |  |  |  |  |  |  |
Adjustment of actuarial liabilities - restatement of obligations of the defined benefit plans, net of taxes | - | - | - | - | - | - | - | 7,264 | - | 7,264 | - | 7,264
Comprehensive income for the period | - | - | - | - | - | - | - | 7,264 | 2,225,881 | 2,233,145 | 1,140 | 2,234,285
Realization of PP&E deemed cost | - | - | - | - | - | - | (5,917) | - | 5,917 | - | - | -
Interest on equity | - | - | - | - | - | - | - | - | (1,137,764) | (1,137,764) | - | (1,137,764)
Non-controlling interests | - | - | - | - | - | - | - | - | - | - | (740) | (740)
BALANCES ON JUNE 30, 2025 | 14,308,909 | 393,093 | 2,024,818 | 327,004 | 10,389,223 | 834,603 | 398,881 | (1,297,398) | 1,094,034 | 28,473,167 | 5,693 | 28,478,860

The accompanying notes are an integral part of this interim financial information.

26 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

STATEMENTS OF CASH FLOWS

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais)

| Note | Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
CASH FLOW FROM OPERATIONS |  |  |  |  |
Net income for the period |  | 2,227,021 | 2,841,477 | 2,225,881 | 2,840,381
Adjustments to reconcile net income to net cash flows: |  |  |  |  |
Current and deferred income tax and social contribution | 8 | 364,835 | 811,152 | (65,318) | 44,067
Depreciation and amortization | 22c | 732,240 | 667,452 | 124 | 71
Write-off of net residual value of assets and impairment |  | 74,799 | 42,869 | - | -
Gain on disposal of assets |  | - | (42,989) | - | -
Refund of tariff subsidies |  | (638,368) | - | - | -
Share of loss (gain), net, of subsidiaries and joint ventures | 11 | (119,537) | (129,212) | (2,211,366) | (2,593,461)
Remeasuring of concession financial and concession contract assets |  | (652,344) | (684,709) | - | -
RBSE remeasurement (RBSE = Basic Network of Existing Services) | 12 | 219,168 | - | - | -
Interest and monetary variation |  | 621,508 | 417,964 | (50,881) | (63,927)
Exchange variation on loans | 23 | - | 273,485 | - | -
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers | 16 | (177,892) | (512,852) | - | -
Reversal of amounts refundable to customers |  | - | (410,626) | - | -
Appropriation of transaction costs | 17 | 12,431 | 8,392 | - | -
Expected credit losses | 22 | 53,726 | 153,153 | (87) | 9,309
Provision for contingencies | 19 | 251,690 | (327,046) | 31,452 | 30,470
Net gain on derivative instruments at fair value through profit or loss |  | - | (112,050) | - | -
CVA (Parcel A items Compensation) Account and other financial components in tariff adjustments | 9 | (196,714) | (19,119) | - | -
Post-employment obligations | 18 | 211,729 | 243,837 | 31,928 | 30,844
Other |  | (3,228) | (6,841) | (1,404) | -
|  | 2,981,064 | 3,214,337 | (39,671) | 297,754
(Increase) decrease in assets |  |  |  |  |
Receivables from customers, traders and concession holders | 7 | (132,092) | 64,273 | 33,649 | 4,251
Tariff Subsidy Reimbursement | 9 | 207,966 | - | - | -
Recoverable taxes |  | (94,752) | 36,632 | (1,828) | 8,818
Income tax and social contribution tax credits |  | (116,646) | 236,053 | 89,858 | 122,938
Escrow deposits |  | 30,157 | 61 | 14,381 | (12,928)
Contractual assets and concession financial assets | 9 e 10 | 396,981 | 515,649 | - | -
Other |  | (191,195) | (90,246) | 16,566 | (17,988)
|  | 100,419 | 762,422 | 152,626 | 105,091
Increase (decrease) in liabilities |  |  |  |  |
Suppliers | 15 | 128,739 | (257,013) | 16,027 | 11,113
Income tax and social contribution tax payable | 16 | (82,603) | (148,610) | (104,228) | (168,027)
Payroll and related charges |  | 38,387 | 100,168 | 1,791 | 7,135
Regulatory charges |  | 75,614 | (8,493) | - | -
Post-employment contributions paid | 18 | (170,043) | (257,971) | (14,251) | (12,432)
PIS/Pasep and Cofins refundable to customers | 16 | - | (373) | - | -
Accounts payable related to energy generated by consumers |  | 239,640 | 185,657 | - | -
Other |  | (270,291) | (249,886) | (27,132) | 1,229
|  | (40,557) | (636,521) | (127,793) | (160,982)
Cash from operations activities |  | 3,040,926 | 3,340,238 | (14,838) | 241,863
Interest received |  | 187,607 | 101,344 | 23,260 | 29,575
Dividends and interest on equity received | 11 | 107,723 | 212,939 | 1,967,599 | 1,615,590
Interest paid on debentures | 17 | (526,396) | (442,424) | - | -
Interest paid on leasing contracts | 14 | (2,914) | (2,550) | (4) | (5)
Income tax and social contribution tax paid |  | (460,775) | (282,248) | (21,392) | (13,784)
Settlement of derivative financial instruments | 25 | - | (6,524) | - | -
NET CASH FROM OPERATING ACTIVITIES |  | 2,346,171 | 2,920,775 | 1,954,625 | 1,873,239
INVESTING ACTIVITIES |  |  |  |  |
Investments in marketable securities |  | (10,155,781) | (6,275,493) | (1,035,591) | (2,043,102)
Redemptioms in marketable securities |  | 9,409,775 | 5,654,766 | 742,943 | 1,805,211
Investments in Restricted cash |  | (1,318,152) | - | (406,780) | -
Redemptions of restricted funds |  | 1,508,252 | - | 415,731 | -
Acquisition of equity investees and contributions to investees |  | (593) | (16,358) | (177,000) | (180,150)
Sale of PP&E | 27 | - | 100,887 | - | -
Reduction of share capital in investee |  | - | 47,932 | - | -
Property, plant and equipment | 12 | (307,229) | (275,146) | - | -
Intangible assets | 13 | (70,505) | (116,213) | (1,341) | (1,317)
Contract assets - distribution of gas and energy infrastructure | 10 | (2,332,673) | (1,910,406) | - | -
NET CASH USED IN INVESTING ACTIVITIES |  | (3,266,906) | (2,790,031) | (462,038) | (419,358)

27 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

FINANCING ACTIVITIES |  |  |  |  |
Proceeds from debentures, net | 17 | 4,965,036 | 1,946,302 | - | -
Interest on equity and dividends paid |  | (1,775,716) | (1,437,823) | (1,775,266) | (1,437,823)
Payment of debentures | 17 | (2,368,868) | (575,916) | - | -
Leasing liabilities paid | 14 | (40,154) | (36,540) | (115) | (136)
NET CASH FLOWS PROVIDE BY/ USED IN FINANCING ACTIVITIES |  | 780,298 | (103,977) | (1,775,381) | (1,437,959)
Net (decrease) increase in cash and cash equivalents |  | (140,437) | 26,767 | (282,794) | 15,922
Cash and cash equivalents at the beginning of the period | 5 | 1,898,224 | 1,537,482 | 417,258 | 187,691
Cash and cash equivalents at the end of the period | 5 | 1,757,787 | 1,564,249 | 134,464 | 203,613

The accompanying notes are an integral part of this interim financial information.

28 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

STATEMENTS OF ADDED VALUE

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025, AND 2024

(In thousands of Brazilian Reais)

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
REVENUES |  |  |  |
Sales of energy, gas and services | 24,174,225 | 22,525,331 | 2,303,103 | 2,274,917
Energy and gas distribution construction revenue | 2,472,992 | 2,047,640 | - | -
Transmission construction revenue | 245,474 | 168,285 | - | -
Interest revenue arising from the financing component in the transmission contract asset | 203,848 | 285,822 | - | -
RBSE Remeasurement (EBTN)(Existing Basic Transmission Network) | (219,168) | - | - | -
Adjustment to expectation of cash flow from reimbursement of distribution concession financial assets | 79,821 | 53,209 | - | -
Revenue from the construction of own assets | 225,954 | 57,999 | - | -
Estimated credit losses | (53,726) | (153,153) | 87 | (9,309)
| 27,129,420 | 24,985,133 | 2,303,190 | 2,265,608
INPUTS ACQUIRED FROM THIRD PARTIES |  |  |  |
Energy bought for resale | (9,507,808) | (7,780,591) | (2,065,796) | (1,728,568)
Charges for use of national grid | (1,730,224) | (1,849,699) | 63 | (63)
Outsourced services | (2,354,749) | (1,963,605) | (11,993) | (8,021)
Gas bought for resale | (1,236,761) | (1,293,975) | - | -
Materials | (1,432,351) | (1,034,999) | (80) | (65)
Other costs | (609,966) | (66,676) | (40,933) | (32,017)
| (16,871,859) | (13,989,545) | (2,118,739) | (1,768,734)
GROSS VALUE ADDED | 10,257,561 | 10,995,588 | 184,451 | 496,874
RETENTIONS |  |  |  |
Depreciation and amortization | (732,240) | (666,321) | (124) | (71)
NET ADDED VALUE PRODUCED BY THE COMPANY | 9,525,321 | 10,329,267 | 184,327 | 496,803
ADDED VALUE RECEIVED BY TRANSFER |  |  |  |
Share of income, net, of associates and joint ventures | 119,537 | 129,212 | 2,211,366 | 2,593,461
Gain on financial updating of the Concession Grant Free | 257,316 | 235,636 | - | -
Generation indemnity revenue | 58,129 | 42,030 | - | -
Financial revenues | 610,558 | 1,017,067 | 67,370 | 95,260
| 1,045,540 | 1,423,945 | 2,278,736 | 2,688,721
ADDED VALUE TO BE DISTRIBUTED | 10,570,861 | 11,753,212 | 2,463,063 | 3,185,524
DISTRIBUTION OF ADDED VALUE |  |  |  |
Employees | 996,274 | 1,048,397 | 64,031 | 64,006
Direct remuneration | 635,470 | 599,464 | 24,405 | 20,600
Post-employment obligations and other benefits | 298,022 | 334,732 | 37,004 | 35,141
FGTS fund | 37,391 | 36,053 | 1,787 | 2,049
Scheduled Voluntary Separation Program | 25,391 | 78,148 | 835 | 6,216
Taxes | 6,299,793 | 6,831,879 | 172,270 | 280,814
Federal | 3,567,876 | 4,212,049 | 46,843 | 157,203
State | 2,723,312 | 2,612,787 | 125,286 | 123,453
Municipal | 8,605 | 7,043 | 141 | 158
Remuneration of external capital | 1,047,773 | 1,031,459 | 881 | 323
Interest | 1,040,147 | 1,025,134 | 859 | 306
Rentals | 7,626 | 6,325 | 22 | 17

Remuneration of own capital | 2,227,021 | 2,841,477 | 2,225,881 | 2,840,381
Interest on capital | 1,137,764 | 816,046 | 1,137,764 | 816,046
Retained Earnings | 1,088,117 | 2,024,335 | 1,088,117 | 2,024,335
Non-controlling interest in retained earnings | 1,140 | 1,096 | - | -
| 10,570,861 | 11,753,212 | 2,463,063 | 3,185,524

The accompanying notes are an integral part of these interfim financial information.

29 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

NOTES TO THE INTERIM FINANCIAL INFORMATION

FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2025

(In thousands of Brazilian Reais, except where otherwise indicated)

| 1. | OPERATING CONTEXT

Cemig

Companhia Energética de Minas Gerais (‘Cemig’, ´Parent company’ or ‘Cemig Holding’) is a listed corporation registered in the Brazilian Registry of Corporate Taxpayers (CNPJ) under No. 17.155.730/0001-64, with shares traded on the São Paulo Stock Exchange (‘B3’) at Corporate Governance Level 1; on the New York Stock Exchange (‘NYSE’).

On July 8, 2025, BME - Bolsa y Mercados Españoles Sistemas de Negociación approved Cemig’s request to delist its equity securities from the Mercado de Valores Latino-Americanos (Latibex), with the delisting becoming effective on July 10, 2025.

The Cemig is an entity domiciled in Brazil, at Avenida Barbacena, nº 1200, Santo Agostinho neighborhood, in Belo Horizonte, Minas Gerais. Constituted to operate in the trading of electric power and as holding company, with interests in subsidiaries and jointly controlled entities, whose objects are construction and operation of systems for generation, transformation, transmission, distribution and sale of energy. And Cemig operates in areas such as gas distribution, distributed generation services and energy efficiency solutions.

The operations of the Cemig and its subsidiaries are divided into 6 segments: Generation, Transmission, Trading, Distribution, Gas and Investees.

The Company's interim financial information covers the Company and its subsidiaries.

On June 30, 2025, the Company had positive net consolidated working capital (as defined as consolidated current assets less consolidated current liabilities) of R$60,887 (negative of R$1,913,226 on December 31, 2024). The Company has been raising funds from third parties to support its investment program. In the first half of 2025, the subsidiaries Cemig D and Cemig GT raised funds through the issuance of debentures in the amounts of R$4,395,000 and R$625,000, respectively.

Management monitors the Company’s cash flow and evaluates measures to adjust its equity situation as necessary. The Company has achieved positive operational cash flow and profitability, as shown in our consolidated statements of income and cash flows.

The Company estimates that the cash balances, and cash flow from operations and financing activities, are sufficient to meet the needs for working capital, investments, debt servicing, and other cash needs in the next 12 months. The Company also has existing credit lines at the financial institutions with which it operates.

30 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Acquisition of Timóteo-Mesquita Transmission Company

On February 26, 2025, Cemig GT signed the Asset Purchase and Sale Agreement (Contrato de Compra e Venda de Ativos, or ‘CCVA’) for the acquisition of the entire share capital of the Empresa de Transmissão Timóteo-Mesquita (ETTM) owned by the Fram Capital Group.

The price negotiated was R$30 million and the Annual Permitted Revenue (Receita Anual Permitida, or ‘RAP’) of the assets is R$5.7 million. ETTM's transmission assets are connected to the 230 kV Basic Grid owned by Cemig, located in the Vale do Aço region of Minas Gerais.

The closing of the transaction is subject to compliance with the usual conditions precedent for this type of operation, including the approval of CADE and Aneel.The acquisition is in line with Cemig's Strategic Plan, which provides for investment in transmission assets in the state of Minas Gerais.

| 2. | BASIS OF PREPARATION

| 2.1 | Statement of compliance

The individual and consolidated interim financial information has been prepared in accordance with CPC 21 (R1) / IAS 34 – Interim Financial Reporting, which applies to interim financial information, and the rules issued by the Brazilian Securities Commission (Comissão de Valores Mobiliários, or CVM), applicable to preparation of Quarterly Information (Informações Trimestrais, or ITR).

The Company also uses the guidelines contained in the Brazilian Electricity Sector Accounting Manual (MCSE) and the standards defined by Aneel, when these do not conflict with the pronouncements of the CPC or with International Financial Reporting Standards (IFRS) issued by International Accounting Standards Board (IASB).

Presentation of the Added Value Statements (Demonstrações do Valor Adicionado, or ‘DVA’) is required by the Brazilian corporate law for listed companies. Under IFRS Accounting Standards this statement is not required and is presented as supplementary information, without prejudice to the financial statements as a whole.

Except for the new rules, or alterations to rules, that came into effect on January 1, 2025, this interim accounting information has been prepared in accordance with principles, practices and criteria consistent with those adopted the preparation of the annual financial statements for the year ended December 31, 2024.

Thus, this interim financial information should be read in conjunction with the said annual financial statements, approved by the Company’s management on March 20, 2025.

31 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

All relevant accounting information inherent to the interim financial statements is properly disclosed and corresponds to the information used by Management in its decision-making process.

The Company's Board of Directors authorized the issuance of this interim financial information on August 14, 2025.

| 2.2 | New or revised accounting standards applied for the second time in 2025

The changes made to CPC 18 (R3) / IAS 28, ICPC 09, CPC 02 (R2) / IAS 21, CPC 37 (R1) / IFRS 1 and OCPC 10, in force for annual periods beginning January 1, 2025, did not produce significant impacts on the Company's individual and consolidated interim financial statements.

| 3. | PRINCIPLES OF CONSOLIDATION

The reporting dates of financial information of the subsidiaries used for the purposes of calculation of consolidation and jointly controlled entities and affiliates used for calculation of this equity method contribution are prepared as of the same reporting date of the Company. Accounting policies are applied uniformly in line with those used by the parent company.

The direct equity investments of Cemig, included in the consolidation, are the following:

Subsidiary | June 30, 2025 and December 31, 2024
Form of valuation | Direct interest, %
Cemig Geração e Transmissão S.A. (“Cemig GT”) | Consolidation | 100.00
Cemig Distribuição S.A. (“Cemig D”) | Consolidation | 100.00
Companhia de Gás de Minas Gerais (“Gasmig”) | Consolidation | 99.57
Cemig Soluções Inteligentes em Energia S.A. (“Cemig Sim”) | Consolidation | 100.00
Sete Lagoas Transmissora de Energia S.A. (“Sete Lagoas”) | Consolidation | 100.00

Further details on the investments are presented in Note 11 to the financial statements.

4. OPERATING SEGMENTS

Detailed information on the operating segments is disclosed in note 5 to the financial statements for the year ended December 31, 2024.

32 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

INFORMATION BY SEGMENT FROM JANUARY TO JUNE 2025
Account/Description | Energy | Gas | Investees | Total | Eliminations (1) | Consolidated
Generation | Transmission | Trading | Distribution
NET REVENUE | 1,581,817 | 720,431 | 3,872,779 | 13,773,425 | 1,702,579 | 48,994 | 21,700,025 | (1,069,499) | 20,630,526
Intersegments | 768,170 | 277,914 | 930 | 22,485 | - | - | 1,069,499 | (1,069,499) | -
Third parties | 813,647 | 442,517 | 3,871,849 | 13,750,940 | 1,702,579 | 48,994 | 20,630,526 | - | 20,630,526
COST OF ENERGY AND GAS | (246,372) | (196) | (3,783,413) | (7,380,231) | (973,949) | (148) | (12,384,309) | 1,052,450 | (11,331,859)
Intersegments | (20,012) | (77) | (723,878) | (306,965) | - | (1,518) | (1,052,450) | 1,052,450 | -
Third parties | (226,360) | (119) | (3,059,535) | (7,073,266) | (973,949) | 1,370 | (11,331,859) | - | (11,331,859)
COSTS, EXPENSES AND OTHER REVENUE (2) |  |  |  |  |  |  |  |  |
Personnel | (73,142) | (78,453) | (21,196) | (497,993) | (32,304) | (31,592) | (734,680) | - | (734,680)
‘Employees and managers’ income sharing | (8,151) | (8,880) | (5,273) | (52,119) | (4,924) | (9,962) | (89,309) | - | (89,309)
Post-employment obligations | (22,352) | (13,813) | (3,165) | (136,219) | - | (36,180) | (211,729) | - | (211,729)
Materials, outsourced services and other expenses (revenues), net | (114,048) | (241,404) | (16,742) | (1,117,908) | (40,505) | (23,954) | (1,554,561) | 17,049 | (1,537,512)
Intersegments | (13,697) | (1,362) | - | (1,649) | (105) | (236) | (17,049) | 17,049 | -
Third parties | (100,351) | (240,042) | (16,742) | (1,116,259) | (40,400) | (23,718) | (1,537,512) | - | (1,537,512)
Depreciation and amortization | (158,339) | (9,695) | (6) | (501,864) | (50,571) | (11,765) | (732,240) | - | (732,240)
Operating provisions and impairment | (13,349) | (9,004) | (7,891) | (281,193) | 53 | (31,668) | (343,052) | - | (343,052)
Construction costs | - | (192,244) | - | (2,278,650) | (194,341) | - | (2,665,235) | - | (2,665,235)
Total cost of operation | (389,381) | (553,493) | (54,273) | (4,865,946) | (322,592) | (145,121) | (6,330,806) | 17,049 | (6,313,757)
COSTS, EXPENSES AND OTHER REVENUE | (635,753) | (553,689) | (3,837,686) | (12,246,177) | (1,296,541) | (145,269) | (18,715,115) | 1,069,499 | (17,645,616)
Equity in earnings of unconsolidated investees | - | - | - | - | - | 119,537 | 119,537 | - | 119,537
INCOME BEFORE FINANCE INCOME (EXPENSES) | 946,064 | 166,742 | 35,093 | 1,527,248 | 406,038 | 23,262 | 3,104,447 | - | 3,104,447
Finance net income (expenses) | 12,056 | (9,174) | 7,952 | (459,539) | (11,094) | (52,792) | (512,591) | - | (512,591)
INCOME BEFORE INCOME TAX AND SOCIAL CONTRIBUTION TAX | 958,120 | 157,568 | 43,045 | 1,067,709 | 394,944 | (29,530) | 2,591,856 | - | 2,591,856
Income tax and social contribution tax | (114,513) | 3,101 | 27,501 | (205,997) | (129,740) | 54,813 | (364,835) | - | (364,835)
NET INCOME FOR THE PERIOD | 843,607 | 160,669 | 70,546 | 861,712 | 265,204 | 25,283 | 2,227,021 | - | 2,227,021
Equity holders of the parent | 843,607 | 160,669 | 70,546 | 861,712 | 264,064 | 25,283 | 2,225,881 | - | 2,225,881
Non-controlling interests | - | - | - | - | 1,140 | - | 1,140 | - | 1,140

| (1) | The reconciliation between the published amounts for the segments and the accounting information on revenue and costs indicates the transactions between the consolidated companies (eliminations).

| (2) | The information on costs and expenses by nature is segregated according to the internal business model.

33 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

INFORMATION BY SEGMENT FROM JANUARY TO JUNE 2024
Account/Description | Energy | Gas | Investees | Total | Eliminations (1) | Consolidated
Generation | Transmission | Trading | Distribution
NET REVENUE | 1,436,072 | 599,020 | 3,408,244 | 12,297,078 | 1,653,290 | 17,380 | 19,411,084 | (917,226) | 18,493,858
Intersegments | 690,968 | 195,864 | - | 19,780 | - | 10,614 | 917,226 | (917,226) | -
Third parties | 745,104 | 403,156 | 3,408,244 | 12,277,298 | 1,653,290 | 6,766 | 18,493,858 | - | 18,493,858
COST OF ENERGY AND GAS | (169,299) | (187) | (2,924,173) | (6,669,411) | (1,019,005) | (1,856) | (10,783,931) | 900,709 | (9,883,222)
Intersegments | (16,740) | (73) | (658,175) | (223,483) | - | (2,238) | (900,709) | 900,709 | -
Third parties | (152,559) | (114) | (2,265,998) | (6,445,928) | (1,019,005) | 382 | (9,883,222) | - | (9,883,222)
COSTS AND EXPENSES (2) |  |  |  |  |  |  |  |  |
Personnel | (82,300) | (81,381) | (26,945) | (493,317) | (34,831) | (22,068) | (740,842) | - | (740,842)
‘Employees and managers’ income sharing | (8,651) | (9,040) | (3,865) | (54,260) | - | (6,603) | (82,419) | - | (82,419)
Post-employment obligations | (25,498) | (15,757) | (3,611) | (160,272) | - | (35,538) | (240,676) | - | (240,676)
Materials, outsourced services and other expenses (revenues), net | (114,980) | (43,403) | (14,774) | (1,093,886) | (34,063) | (14,038) | (1,315,144) | 16,517 | (1,298,627)
Intersegments | (13,266) | (1,237) | - | (1,003) | (91) | (920) | (16,517) | 16,517 | -
Third parties | (101,714) | (42,166) | (14,774) | (1,092,883) | (33,972) | (13,118) | (1,298,627) | - | (1,298,627)
Depreciation and amortization | (167,253) | 119 | (10) | (440,312) | (47,812) | (11,053) | (666,321) | - | (666,321)
Operating provisions and impairment | 10,884 | 13,595 | (61,590) | 187,477 | (1,022) | (39,886) | 109,458 | - | 109,458
Construction costs | - | (100,274) | - | (1,937,664) | (109,976) | - | (2,147,914) | - | (2,147,914)
Other revenue | 42,989 | - | - | - | - | - | 42,989 | - | 42,989
Total cost of operation | (344,809) | (236,141) | (110,795) | (3,992,234) | (227,704) | (129,186) | (5,040,869) | 16,517 | (5,024,352)
COSTS AND EXPENSES | (514,108) | (236,328) | (3,034,968) | (10,661,645) | (1,246,709) | (131,042) | (15,824,800) | 917,226 | (14,907,574)
Equity in earnings of unconsolidated investees | - | - | - | - | - | 129,212 | 129,212 | - | 129,212
INCOME BEFORE FINANCE INCOME (EXPENSES) | 921,964 | 362,692 | 373,276 | 1,635,433 | 406,581 | 15,550 | 3,715,496 | - | 3,715,496
Finance net income (expenses) | (103,798) | (58,351) | 14,370 | 196,678 | (29,096) | (82,670) | (62,867) | - | (62,867)
INCOME BEFORE INCOME TAX AND SOCIAL CONTRIBUTION TAX | 818,166 | 304,341 | 387,646 | 1,832,111 | 377,485 | (67,120) | 3,652,629 | - | 3,652,629
Income tax and social contribution tax | (131,333) | (63,088) | (94,634) | (449,336) | (122,654) | 49,893 | (811,152) | - | (811,152)
NET INCOME FOR THE PERIOD | 686,833 | 241,253 | 293,012 | 1,382,775 | 254,831 | (17,227) | 2,841,477 | - | 2,841,477
Equity holders of the parent | 686,833 | 241,253 | 293,012 | 1,382,775 | 253,735 | (17,227) | 2,840,381 | - | 2,840,381
Non-controlling interests | - | - | - | - | 1,096 | - | 1,096 | - | 1,096

| (1) | The reconciliation between the values of the disclosable segments and the accounting information on revenues and costs represents the operations between the consolidated companies (eliminations).

| (2) | The information on operational costs and expenses separated by type is segregated in accordance with the internal business model.

34 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The information for assets by segment is not presented, because this is not part of the information made available to the Company’s Chief Operating Decision Maker (“CODM”) for decision-making purposes, which is the Executive Board

5. CASH AND CASH EQUIVALENTS

| Indexer | Average rate per year | Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Bank accounts |  |  |  | 167,343 | 269,232 | 2,156 | 18,375
Cash equivalents |  |  |  |  |  |  |
Bank certificates of deposit (CDBs) (1) | CDI | 70% to 111% | 80% to 111% | 1,207,021 | 1,469,776 | 34,261 | 397,446
Overnight (2) | Pre-fixed | 14.60% to 14.90% | 11.91% to 12.15% | 383.423 | 159,216 | 98,047 | 1,437
|  |  |  | 1,590,444 | 1,628,992 | 132,308 | 398,883
Total |  |  |  | 1,757,787 | 1,898,224 | 134,464 | 417,258

| (1) | For these CDBs, the Company and its subsidiaries have repo transactions which state, on their trading notes, the bank’s commitment to repurchase the security, on demand, on the maturity date of the transaction, or earlier.

| (2) | Overnight transactions are repos available for redemption on the following day. They are usually backed by Treasury Bills, Notes or Bonds and referenced to a pre-fixed. Their purpose is to settle the short-term obligations of the Company and its subsidiaries, or to be used in the acquisition of other assets with better return to replenish the portfolio.

The main events that impacted the Company’s total Cash and Cash Equivalents during the first half of 2025 were the debenture issuances by Cemig D and Cemig GT, as well as the investments made by Cemig D and Gasmig.

In March 2025, Cemig GT completed the financial settlement of its 10th debenture issuance, resulting in a cash inflow, net of transaction costs, of R$621,734. In the same month, Cemig D completed the financial settlement of its 12th and 13th debenture issuance, in March and April, respectively, with cash inflow net of transaction costs, totaling BRL 4,343,302.

Conversely, in line with its current investment policy, the Company invested BRL 2,332,673 in electricity and gas distribution infrastructure during the first half of the year, in addition to paying BRL 1,775,716 in dividends and interest on equity.

Note 25 gives: (i) the exposure of the Cemig and its subsidiaries to interest rate risk and (ii) a sensitivity analysis for financial assets and liabilities. Financial investments in a reserved investment fund are shown in note 24.

6. MARKETABLE SECURITIES

| Indexer | Average rate per year | Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Current |  |  |  |  |  |  |
Bank Deposit Certificates (CDBs) | CDI | 102.5% to 102.8% | - | 390,602 | - | 78,889 | -
Financial Notes (LFs) - Banks | CDI | 103.5% to 110.02% | 104.2% to 112% | 278,546 | 279,469 | 71,229 | 2,523
Treasury Financial Notes (LFTs) | Selic variation | 15.04% to 15.12% | 12.41% to 12.45% | 546,429 | 72,422 | 139,731 | 654
Others |  |  |  | 5,493 | 6,022 | 1,507 | 566
|  |  |  | 1,221,070 | 357,913 | 291,356 | 3,743
Non-current |  |  |  |  |  |  |
Bank Deposit Certificates (CDBs) | CDI | 102.5% to 102.8% | - | 882 | - | 77 | -
Financial Notes (LFs) - Banks | CDI | 103.5% to 110.02% | 104.2% to 112% | 55,557 | 134,606 | 14,207 | 1,215
|  |  |  | 56,439 | 134,606 | 14,284 | 1,215
Total |  |  |  | 1,277,509 | 492,519 | 305,640 | 4,958

35 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The increase in the total amount of Marketable Securities is mainly due to the investment of funds from the financial settlement of Cemig GT’s 10th debenture issuance and Cemig D’s 12th and 13th debenture issuance.

Note 25 provides a classification of these marketable securities. Investments in marketable securities of related parties are shown in Note 24.

The Cemig and its subsidiaries consistently classify the income related to these securities as part of the cash flow of the investment activity, because they believe that this is the most appropriate presentation to properly reflect the activities.

7. RECEIVABLES FROM CUSTOMERS, TRADERS AND CONCESSION HOLDERS

| Consolidated
Balances not yet due | Up to 90 days past due | More than 91 up to 360 days past due | More than 361 days past due | Jun. 30, 2025 | Dec. 31, 2024

Billed supply – energy | 1,634,364 | 692,376 | 527,938 | 1,094,106 | 3,948,784 | 3,734,657
Billed supply – gas | 165,299 | 35,910 | 224,803 | - | 426,012 | 394,298
Unbilled supply - energy and gas | 1,318,835 | - | - | - | 1,318,835 | 1,288,438
Unbilled supply - gas | 24,365 | - | - | - | 24,365 | 24,581
Other concession holders - wholesale supply | 26,098 | 40,084 | 785 | 47 | 67,014 | 99,663
Other concession holders - wholesale supply, unbilled | 350,411 | - | - | - | 350,411 | 399,646
CCEE (Power Trading Chamber) | 43,974 | 2,199 | - | 2,134 | 48,307 | 117,340
Concession Holders - power transport | 44,768 | 29,023 | 25,778 | 57,302 | 156,871 | 213,488
Concession Holders - power transport, unbilled | 512,495 | - | - | - | 512,495 | 428,369
(-) Provision for expected credit losses (a) | (130,870) | (25,574) | (146,197) | (621,914) | (924,555) | (850,307)
| 3,989,739 | 774,018 | 633,107 | 531,675 | 5,928,539 | 5,850,173
Current assets |  |  |  |  | 5,651,867 | 5,596,248
Non-current assets |  |  |  |  | 276,672 | 253,925

| Parent company
Balances not yet due | Up to 90 days past due | More than 91 up to 360 days past due | More than 361 days past due | Jun. 30, 2025 | Dec. 31, 2024

Billed supply | 27,875 | 5,266 | 6,923 | 46,543 | 86,607 | 96,839
Unbilled supply | 350,780 | - | - | - | 350,780 | 412,111
CCEE (Power Trading Chamber) | - | 37,914 | - | - | 37,914 | -
(-) Provision for expected credit losses | - | (296) | (4,811) | (45,607) | (50,714) | (50,801)
| 378,655 | 42,884 | 2,112 | 936 | 424,587 | 458,149
Current assets |  |  |  |  | 421,758 | 454,286
Non-current assets |  |  |  |  | 2,829 | 3,863

The expected credit losses are considered to be sufficient to cover any potential losses in the realization of accounts receivable, and the changes in the expected credit losses are as follows:

| Consolidated | Parent company
Balance on December 31, 2024 | 850,307 | 50,801
Additions (reversals), net (Note 22c) | 53,726 | (87)
Reversals written off | 20,522 | -
Balance on June 30, 2025 | 924,555 | 50,714

36 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

8. INCOME AND SOCIAL CONTRIBUTION TAXES

| a) | Income tax and social contribution tax recoverable

| Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024

Income tax | 530,388 | 501,102 | 284,242 | 249,641
Social contribution tax | 134,093 | 88,529 | 38,795 | (10,539)
Total | 664,481 | 589,631 | 323,037 | 239,102
Current | 152,812 | 7,283 | - | -
Non-current | 511,669 | 582,348 | 323,037 | 239,102

| b) | Income tax and social contribution tax payable

| Consolidated
Jun. 30, 2025 | Dec. 31, 2024
Current |  |

Income tax | 139,191 | 119,135
Social contribution tax | 20,069 | 43,840
Total | 159,260 | 162,975

| c) | Deferred income tax and social contribution tax

| Consolidated
Dec. 31, 2024 | Income statement | Comprehensive income | Other | Jun. 30, 2025
Deferred tax assets |  |  |  |  |
Tax loss carryforwards | 955,600 | (12,311) | - | - | 943,289
Provisions | 619,254 | 33,717 | - | - | 652,971
Impairment on investments | 17,013 | (420) | - | - | 16,593
Income sharing provision | 29,933 | (2,477) | - | - | 27,456
Post-employment obligations | 1,465,561 | 14,159 | (3,742) | - | 1,475,978
Estimated credit losses | 350,420 | 37,896 | - | - | 388,316
Onerous concession | 11,943 | 230 | - | - | 12,173
Right of use | 134,728 | (17) | - | - | 134,711
Others | 17,016 | (3,069) | - | - | 13,947
Total | 3,601,468 | 67,708 | (3,742) | - | 3,665,434
Deferred tax liabilities |  |  |  |  |
Deemed cost | (147,235) | 1,983 | - | - | (145,252)
Fair value of assets acquired in business combination | (339,180) | 32,646 | - | - | (306,534)
Borrowing costs capitalized | (198,757) | (9,185) | - | - | (207,942)
Adjustment to expectation of cash flow - Concession assets | (387,204) | (41,168) | - | - | (428,372)
Adjustment of contract assets | (1,399,690) | 69,362 | - | - | (1,330,328)
Fair value adjustment of derivative financial instruments | (496) | 418 | - | - | (78)
Reimbursement of costs - GSF | (183,638) | 22,568 | - | - | (161,070)
Lease liabilities | (119,617) | 1,032 | - | - | (118,585)
Others | (35,220) | (1,975) | - | (3,576) | (40,771)
Total | (2,811,037) | 75,681 | - | (3,576) | (2,738,932)
Total, net | 790,431 | 143,389 | (3,742) | (3,576) | 926,502
Total Assets shown in the Statements of Financial Position | 2,333,721 |  |  |  | 2,348,044
Total Liabilities shown in the Statements of Financial Position | (1,543,290) |  |  |  | (1,421,542)

37 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Parent Company
Dec. 31, 2024 | Income statement | Comprehensive income | Jun. 30, 2025
Deferred tax assets |  |  |  |
Tax loss carryforwards | 867,070 | 53,793 | - | 920,863
Provisions for contingencies | 112,708 | 4,550 | - | 117,258
Income sharing provision | 2,806 | (610) | - | 2,196
Post-employment obligations | 183,715 | 6,009 | 386 | 190,110
Estimated credit losses | 17,856 | (29) | - | 17,827
Right of use | 956 | (11) | - | 945
Others | 848 | (36) | - | 812
Total | 1,185,959 | 63,666 | 386 | 1,250,011
Deferred tax liabilities |  |  |  |
Fair value of assets acquired in business combination | (95,197) | 1,632 | - | (93,565)
Lease liabilities | (822) | 20 | - | (802)
Total | (96,019) | 1,652 | - | (94,367)
Total, net | 1,089,940 | 65,318 | 386 | 1,155,644
Total Assets shown in the Statements of Financial Position | 1,089,940 |  |  | 1,155,644

Unrecognized Temporary Differences

As of June 30, 2025, and December 31, 2024, due to the likelihood of generating sufficient future taxable profits, there are no unrecognized deferred tax assets related to tax losses and negative bases.

Uncertainties in the treatment of taxes on income

In its Financial Statements of June 30, 2025, and December 31, 2024, the Company did not recognize any amounts related to uncertainties over Income Tax Treatments recognized in its interim financial statements.

| d) | Reconciliation of income tax and social contribution tax effective rate

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Income before income tax and social contribution tax | 2,591,856 | 3,652,629 | 2,160,563 | 2,884,448
Income tax and social contribution tax - nominal expense (34%) | (881,231) | (1,241,894) | (734,591) | (980,712)
Tax effects applicable to: |  |  |  |
Gain in subsidiaries by equity method (net of effects of Interest on Equity) | 29,402 | 32,857 | 409,014 | 647,770
Tax incentives | 63,952 | 62,403 | - | 1,049
Difference between Presumed Income and Real Income | 61,691 | 44,500 | - | -
Non-deductible penalties | (44,068) | (5,152) | 129 | (46)
Interest on equity declared | 386,840 | 277,456 | 386,840 | 277,456
Selic rate on tax overpayments | 5,448 | 22,223 | 3,945 | 6,199
Other | 13,131 | (3,545) | (19) | 4,217
Income tax and Social Contribution - effective gain (expense) | (364,835) | (811,152) | 65,318 | (44,067)
Current tax | (508,224) | (409,241) | - | (41,436)
Deferred tax | 143,389 | (401,911) | 65,318 | (2,631)
| (364,835) | (811,152) | 65,318 | (44,067)
Effective rate | 14.08% | 22.21% | -3.02% | 1.53%

38 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Consolidated | Parent company
Apr to Jun/2025 | Apro to Jun/2024 | Apr to Jun/2025 | Apro to Jun/2024
Income before income tax and social contribution tax | 1,378,090 | 2,150,923 | 1,172,554 | 1,697,609
Income tax and social contribution tax - nominal expense (34%) | (468,551) | (731,314) | (398,668) | (577,187)
Tax effects applicable to: |  |  |  |
Gain in subsidiaries by equity method (net of effects of Interest on Equity) | 15,428 | 1,431 | 207,635 | 411,611
Tax incentives | 28,470 | 29,534 | - | 70
Difference between Presumed Income and Real Income | 32,420 | 16,054 | - | -
Non-deductible penalties | (21,347) | 18,408 | (59) | (18)
Interest on equity declared | 202,898 | 146,101 | 202,898 | 146,101
Selic rate on tax overpayments | 2,994 | 19,512 | 2,067 | 4,539
Other | 17,879 | 37,937 | 1,206 | 5,268
Income tax and Social Contribution - effective gain (expense) | (189,809) | (462,337) | 15,079 | (9,616)
Current tax | (249,538) | (149,309) | - | (10,930)
Deferred tax | 59,729 | (313,028) | 15,079 | 1,314
| (189,809) | (462,337) | 15,079 | (9,616)
Effective rate | 13.77% | 21.49% | -1.29% | 0.57%

39 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 9. | CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES

Consolidated | Jun. 30, 2025 | Dec. 31, 2024
Concession financial assets |  |

Energy distribution concessions | 3,095,447 | 2,714,876
Gas distribution concessions | 95,152 | 92,131
Indemnifiable receivable - Generation (9.1) | 928,664 | 870,535
Concession grant fee - Generation concessions (9.2) | 3,179,081 | 3,098,247
| 7,298,344 | 6,775,789
Sector financial assets |  |
Amounts receivable from Parcel A (CVA) and Other Financial Components (9.3) | 1,576,345 | 1,295,625
Total assets | 8,874,689 | 8,071,414
Concession financial liabilities |  |
Amounts receivable from Parcel A (CVA) and Other Financial Components (9.3) | - | (16,470)
Total liabilities | - | (16,470)
Current assets | 1,232,360 | 1,190,020
Non-current assets | 7,642,329 | 6,881,394
Current liabilities | - | (16,470)

The changes in concession financial assets related to infrastructure are as follows:

| Distribution | Generation | Gas | Consolidated
Balance on December 31, 2024 | 2,714,876 | 3,968,782 | 92,131 | 6,775,789
Transfers of contract assets | 301,265 | - | - | 301,265
Monetary updating | 79,821 | 315,445 | 3,021 | 398,287
Amounts received | (515) | (175,239) | - | (175,754)
Classification as held for sale | - | (1,243) | - | (1,243)
Balance on June 30, 2025 | 3,095,447 | 4,107,745 | 95,152 | 7,298,344

| 9.1 | Generation - Indemnity receivable

The movement in the balance is as follows:

Generation plant | Concession expiration date | Installed capacity (MW) (1) | Net balance of assets on December 31, 2024 | Financial Update | Net balance of assets on June 30, 2025
Lot D |  |  |  |  |
UHE Três Marias | July 2015 | 396.00 | 225,461 | 15,056 | 240,517
UHE Salto Grande | July 2015 | 102.00 | 115,666 | 7,725 | 123,391
UHE Itutinga | July 2015 | 52.00 | 13,629 | 910 | 14,539
UHE Camargos | July 2015 | 46.00 | 26,492 | 1,769 | 28,261
PCH Piau | July 2015 | 18.01 | 5,911 | 395 | 6,306
PCH Gafanhoto | July 2015 | 14.00 | 7,088 | 473 | 7,561
PCH Peti | July 2015 | 9.40 | 8,181 | 546 | 8,727
PCH Dona Rita | Sep. 2013 | 2.41 | 2,120 | 141 | 2,261
PCH Tronqueiras | July 2015 | 8.50 | 11,169 | 683 | 11,852
PCH Joasal | July 2015 | 8.40 | 8,469 | 565 | 9,034
PCH Martins | July 2015 | 7.70 | 6,013 | 401 | 6,414
PCH Cajuru | July 2015 | 7.20 | 25,480 | 1,701 | 27,181
PCH Paciência | July 2015 | 4.08 | 5,601 | 374 | 5,975
PCH Marmelos | July 2015 | 4.00 | 3,254 | 218 | 3,472
Others |  |  |  |  |
UHE Volta Grande | Feb. 2017 | 380.00 | 488 | 32 | 520
UHE Miranda | Dec. 2016 | 408.00 | 122,740 | 8,197 | 130,937
UHE Jaguara | Aug. 2013 | 424.00 | 186,303 | 12,503 | 198,806
UHE São Simão | Jan. 2015 | 1,710.00 | 96,470 | 6,440 | 102,910
|  | 3,601.70 | 870,535 | 58,129 | 928,664

| (1) | Data not reviwed by external auditors.

40 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 9.2 | Concession grant fee - Generation concessions

The changes in concession financial assets are as follows:

Consolidated | Plants | Dec. 31, 2024 | Interest | Amounts received | Classification as held for sale | Jun. 30, 2025

Cemig Geração e Transmissão S.A. | Três Marias | 1,771,968 | 139,343 | (94,156) | - | 1,817,155
Cemig Geração e Transmissão S.A. | Salto Grande | 556,444 | 43,922 | (29,693) | - | 570,673
Cemig Geração Itutinga S.A. | Itutinga | 211,141 | 18,386 | (12,624) | - | 216,903
Cemig Geração Camargos S.A. | Camargos | 158,222 | 13,700 | (9,398) | - | 162,524
Cemig Geração Sul S.A. | Coronel Domiciano, Joasal, Marmelos, Paciência e Piau | 186,386 | 19,079 | (13,223) | (614) | 191,628
Cemig Geração Leste S.A. | Dona Rita, Ervália, Neblina, Peti, Sinceridade e Tronqueiras | 142,332 | 14,243 | (10,041) | (130) | 146,404
Cemig Geração Oeste S.A. | Cajurú, Gafanhoto e Martins | 71,754 | 8,643 | (6,104) | (499) | 73,794
Total |  | 3,098,247 | 257,316 | (175,239) | (1,243) | 3,179,081

41 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 9.3 | Account for compensation of variation of parcel A items (CVA) and Other financial components

| Dec. 31, 2024 | Additions | Amortization | Update | Transfer | Jun. 30, 2025 | Amortization | Constitution | Current | Non-current
Sectoral financial assets |  |  |  |  |  |  |  |  |  |

Active CVA | 140,938 | 684,878 | (773,052) | 115,243 | 265,552 | 433,559 | 332,914 | 100,645 | 293,041 | 140,518
Energy aquisition (CVA energy) | 320,591 | 563,641 | (472,635) | 86,584 | (40,849) | 457,332 | 244,641 | 212,691 | 214,726 | 242,606
Itaipu energy costs | (78,453) | - | - | - | (41,614) | (120,067) | (96,889) | (23,178) | (98,949) | (21,118)
Program of Incentives for Alternative Electricity Sources – PROINFA | 6,293 | 24,204 | (2,651) | 1,357 | (707) | 28,496 | 28,496 | - | 28,496 | -
Transport basic charges | 249,572 | 18,927 | (184,213) | 18,221 | 151,693 | 254,200 | 217,138 | 37,062 | 220,433 | 33,767
Transport of Itaipu supply | (4,001) | - | (31,397) | 773 | 17,882 | (16,743) | (9,676) | (7,067) | (10,304) | (6,439)
System service charges – ESS | (221,511) | 78,106 | (72,703) | 8,080 | 182,051 | (25,977) | 84,810 | (110,787) | 74,963 | (100,940)
CDE | (131,553) | - | (9,453) | 228 | (2,904) | (143,682) | (135,606) | (8,076) | (136,324) | (7,358)
Other sectoral financial assets | 1,154,687 | 285,744 | (465,514) | 116,888 | 50,981 | 1,142,786 | (240,968) | 1,383,754 | 595,039 | 547,747
Quotas from nuclear energy | 89,457 | 33,476 | (56,115) | 7,374 | 50,235 | 124,427 | 103,246 | 21,181 | 105,129 | 19,298
Neutrality of Parcel A | 89,865 | 207,731 | (80,963) | 7,995 | 59,851 | 284,479 | 216,905 | 67,574 | 222,912 | 61,567
Estimated neutrality on distributed generation credits | 692,843 | 48,110 | - | 74,364 | - | 815,317 | - | 815,317 | 815,317 | -
Energy overcontracting | 407,148 | (23,786) | (317,880) | 6,433 | 304,071 | 375,986 | 151,886 | 224,100 | 171,806 | 204,180
Tariff refunds | (71,675) | - | - | - | (47,419) | (119,094) | (99,991) | (19,103) | (103,184) | (15,910)
Other | (52,951) | 20,213 | (10,556) | 20,722 | (315,757) | (338,329) | (613,014) | 274,685 | (616,941) | 278,612
Total sectorial financial assets | 1,295,625 | 970,622 | (1,238,566) | 232,131 | 316,533 | 1,576,345 | 91,946 | 1,484,399 | 888,080 | 688,265
Sectoral financial liabilities |  |  |  |  |  |  |  |  |  |
Passive CVA | (138,939) | (354,935) | 855,021 | (95,595) | (265,552) |  |  |  |  |
Energy aquisition (CVA energy) | (326,512) | (397,753) | 757,974 | (74,558) | 40,849 | - | - | - | - | -
Itaipu energy costs | (73,023) | (38,773) | 78,250 | (8,068) | 41,614 | - | - | - | - | -
Program of Incentives for Alternative Electricity Sources – Proinfa | (9,431) | - | 8,929 | (205) | 707 | - | - | - | - | -
Transport basic charges | 155,288 | - | (3,595) | - | (151,693) | - | - | - | - | -
Transport of Itaipu supply | 33,716 | (16,571) | 1,398 | (661) | (17,882) | - | - | - | - | -
System service charges – ESS | 71,327 | 113,483 | - | (2,759) | (182,051) | - | - | - | - | -
CDE | 9,696 | (15,321) | 12,065 | (9,344) | 2,904 | - | - | - | - | -
Other sectoral financial liabilities | 122,469 | (414,791) | 379,363 | (31,051) | (55,990) | - | - | - | - | -
Share of nuclear energy | 49,012 | - | 1,223 | - | (50,235) | - | - | - | - | -
Neutrality of Parcel A | 34,049 | (976) | 27,196 | (418) | (59,851) | - | - | - | - | -
Energy over contracting | 304,071 | - | - | - | (304,071) | - | - | - | - | -
Tariff refunds | (31,223) | (64,813) | 51,220 | (2,603) | 47,419 | - | - | - | - | -
Other | (233,440) | (349,002) | 299,724 | (28,030) | 310,748 | - | - | - | - | -
Total sectoral financial liabilities | (16,470) | (769,726) | 1,234,384 | (126,646) | (321,542) | - | - | - | - | -
Total sectoral financial assets and liabilities (net) | 1,279,155 | 200,896 | (4,182) | 105,485 | (5,009) | 1,576,345 | 91,946 | 1,484,399 | 888,080 | 688,265

42 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Annual Tariff Adjustment

On May 20, 2025, ANEEL approved the results of Cemig D’s Annual Tariff Adjustment, effective until May 27, 2026. The average impact on consumers was 7.78%, with an average increase of 9.45% for consumers connected to High Voltage and 7.03% for those connected to Low Voltage. For residential consumers connected to Low Voltage, the average adjustment was 6.86%.

Voltage Level | Average Effect on the Consumer
High and Medium Voltage – Group A | 9.45%
Low Voltage – Group B | 7.03%
Average Adjustment | 7.78%

This result stems from the adjustment of cost components in Parcel A and Parcel B, calculated in accordance with PRORET (Tariff Regulation Procedures), for the determination of the Required Revenue; the inclusion of financial components calculated in the current tariff adjustment to be offset over the following 12 months; and the removal of financial components established in the previous tariff process, which remained in effect until the date of the current adjustment.

In the composition of the average effect, the variation in Parcel A costs contributed 6.12%, the update of Parcel B accounted for 1.36%, reflecting, among other factors, the accumulated IPCA variation of 5.53% from May 2024 to April 2025, and the financial components were responsible for the remaining 0.3%.

| 10. | CONCESSION CONTRACT ASSETS

| Consolidated
Jun. 30, 2025 | Dec. 31, 2024

Distribution - Infrastructure assets under construction | 5.319.827 | 4,421,329
Gas - Infrastructure assets under construction | 725.346 | 553,770
Transmission - National Grid (‘BNES’ - Basic Network of the Existing System) - Law 12,783/13 | 1.276.455 | 1,616,179
Transmission - Assets remunerated by tariff | 5.032.043 | 4,875,636
Total | 12.353.671 | 11,466,914
Current | 1.109.923 | 1,140,037
Non-current | 11.243.748 | 10,326,877

Changes in concession contract assets are as follows:

| Transmission | Distribution | Gas | Consolidated
Balance on December 31, 2024 | 6,491,815 | 4,421,329 | 553,770 | 11,466,914

Additions (1) | 245.474 | 2.212.700 | 192.114 | 2.650.288
Monetary updating | 203.848 | - | - | 203.848
Realization | (414.446) | - | - | (414.446)
RBSE Revaluation RBSE (2) | (219.168) | - | - | (219.168)
Other additions | 975 | - | - | 975
Transfers of financial assets | - | (301.265) | - | (301.265)
Transfers to intangible assets | - | (1.012.937) | (20.538) | (1.033.475)
Balance on June 30, 2025 | 6.308.498 | 5.319.827 | 725.346 | 12.353.671

| (1) | Additions in the distribution segment reflect investments made by Cemig D, in line with the Distribution Development Plan (PDD). The PDD involves the execution of projects linked to the electric power system, associated with the expansion, reinforcement, refurbishment, and renewal of Cemig D’s assets. In the first half of 2025, highlights included investments in major urban, rural, and complementary service projects totaling BRL 751,695; reinforcement and refurbishment of medium- and low-voltage networks, as well as operation and maintenance, totaling BRL 374,810; and expansion and reinforcement of high-voltage infrastructure, totaling BRL 610,663. Additions in the gas segment reflect investments made by Gasmig, in line with the Centro-Oeste Project, which includes the planned construction of an additional 300 km of gas pipelines, scheduled for completion in the second half of 2026.

| (2) | In Note 22c, this amount is presented net of PIS/Pasep and Cofins.

43 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Distribution Segment

The amount of additions in the period from January to June 2025 includes R$72,141 (R$35,260 in the first half of 2024) As capitalized financial charges, as presented in note 17. The average rate used to determine the amount of borrowing costs eligible for capitalization was 13.83%. The nature of additions to contract assets and intangible assets is presented in Note 22b.

The capitalization of financial charges is a non-cash transaction, and therefore is not reflected in the Cash Flow Statements.

Transmission Segment

Basic Network of the Existing System (RBSE)

On June 10, 2025, ANEEL published Resolution No. 3,469, which amended the Allowed Annual Revenue (RAP) related to the financial component of the Basic Network of the Existing System (RBSE) assets, previously approved by Resolution No. 2,852/2021.

The main change involved the application base of the cost of equity used to calculate the component, with the amortization phase being split into two cash flows: one referred to as 'non-contentious' (payments not suspended by injunctions) and the other as 'contentious' (payments suspended by injunctions), with effective payment dates starting on July 1, 2017, and July 1, 2020, respectively, each with a duration of eight years.

As a result, the remuneration based on the cost of equity was applied exclusively to the contentious flow, for the period from 2017 to 2020 (the year of effective payment).

The RAPs approved and processed up to the 2024/2025 cycle were considered finalized, and the residual amounts were accommodated in the remaining payments for the 2025/2026 to 2027/2028 cycles, in uniform flows.

Due to the changes introduced by the resolution, the Company remeasured the RBSE contractual asset and recorded a reduction of BRL 219,168 as of June 30, 2025.

44 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 11. | INVESTMENTS

Investees | Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Jointly controlled |  |  |  |
Taesa | 1,757,572 | 1,615,340 | 1,757,572 | 1,615,340
Guanhães Energia | 178,172 | 172,300 | - | -
Cachoeirão | 46,991 | 44,893 | - | -
Pipoca | 48,220 | 54,041 | - | -
Aliança Norte (1) | 382,555 | 419,414 | - | -
Amazônia Energia (1) | 635,782 | 696,686 | - | -
Paracambi | 104,046 | 105,013 | - | -
UFVs (2) | 121,953 | 113,333 | - | -
Subsidiary |  |  |  |
Cemig Geração e Transmissão | - | - | 10,642,254 | 11,734,032
Cemig Distribuição | - | - | 12,124,096 | 11,281,256
Gasmig | - | - | 1,667,702 | 1,581,321
Cemig Sim | - | - | 947,857 | 754,515
Sete Lagoas | - | - | 87,623 | 87,605
| 3,275,291 | 3,221,020 | 27,227,104 | 27,054,069

| (1) | Indirect interest in the Belo Monte plant through these investees.

| (2) | Set of photovoltaics bussiness, in which the investee Cemig Sim has a interest.

For the period ended on June 30, 2025, management evaluates if of potential decline in value of assets, as referred to in CPC 01/ IAS 36 - Impairments of Assets. It was found that there are no indications of a loss in the recoverable value.

a) Movement of the right to exploitation of the regulated activity

Consolidated
Investidas | Dec. 31, 2024 | Amortization | Jun. 30, 2025
Cemig Geração e Transmissão |  |  |
Paracambi | 68,985 | (1,250) | 67,735
Taesa | 123,499 | (4,660) | 118,839
Cemig Sim - UFVs | 6,029 | (168) | 5,861
Total | 198,513 | (6,078) | 192,435

Parent Company
Investees | Dec. 31, 2024 | Amortization | Jun. 30, 2025
Paracambi | 68,985 | (1,250) | 67,735
Taesa | 123,499 | (4,660) | 118,839
Gasmig | 355,458 | (6,329) | 349,129
Sete Lagoas | (3,774) | 122 | (3,652)
Total | 544,168 | (12,117) | 532,051

45 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

b) Changes in investments in subsidiaries and jointly controlled entities

| Consolidated
Investees | Dec. 31, 2024 | Gain (loss) by equity method (Statement of income) | Dividends / Interest on equity | Additions | Jun. 30, 2025
Hidrelétrica Cachoeirão | 44,893 | 3,428 | (1,330) | - | 46,991
Guanhães Energia | 172,300 | 10,571 | (4,699) | - | 178,172
Hidrelétrica Pipoca | 54,041 | 3,940 | (9,761) | - | 48,220
Paracambi | 105,013 | 8,098 | (9,065) | - | 104,046
Amazônia Energia (1) | 696,686 | (61,217) | - | 313 | 635,782
Aliança Norte (1) | 419,414 | (37,139) | - | 280 | 382,555
Taesa | 1,615,340 | 183,042 | (40,810) | - | 1,757,572
UFV Janaúba | 4,469 | 817 | (194) | - | 5,092
UFV Corinto | 9,146 | 884 | - | - | 10,030
UFV Manga | 11,461 | 920 | - | - | 12,381
UFV Bonfinópolis II | 6,423 | 512 | - | - | 6,935
UFV Lagoa Grande | 14,877 | 1,130 | - | - | 16,007
UFV Lontra | 17,766 | 1,019 | - | - | 18,785
UFV Mato Verde | 6,390 | 514 | - | - | 6,904
UFV Mirabela | 4,280 | 373 | - | - | 4,653
UFV Porteirinha I | 5,251 | 450 | - | - | 5,701
UFV Porteirinha II | 6,901 | 504 | - | - | 7,405
UFV Brasilândia | 14,905 | 1,119 | - | - | 16,024
UFV Apolo I | 5,597 | 271 | - | - | 5,868
UFV Apolo II | 5,867 | 301 | - | - | 6,168
Total Investiment | 3,221,020 | 119,537 | (65,859) | 593 | 3,275,291

| (1) | Indirect interest in the Belo Monte plant through these investees.

Parent Company
Investees | Dec. 31, 2024 | Gain (loss) by equity method (Statement of income) | Dividends / Interest on equity | Additions | Others | Jun. 30, 2025
Cemig Geração e Transmissão | 11,734,032 | 882,146 | 2,501 | (1,976,425) | - | 10,642,254
Cemig Distribuição | 11,281,256 | 861,712 | 5,511 | (24,383) | - | 12,124,096
Gasmig | 1,581,321 | 257,735 | - | (171,354) | - | 1,667,702
Cemig Sim | 754,515 | 23,197 | - | (6,855) | 177,000 | 947,857
Sete Lagoas | 87,605 | 3,535 | - | (3,517) | - | 87,623
Taesa | 1,615,340 | 183,041 | - | (40,809) | - | 1,757,572
Total | 27,054,069 | 2,211,366 | 8,012 | (2,223,343) | 177,000 | 27,227,104

Changes in dividends receivable are as follows

| Consolidated | Parent Company
Balance on December 31, 2024 | 111,367 | 2,088,913

Investees’ dividends proposed | 65,859 | 2,223,343
Withholding tax on interest on equity declared by investees | (6,121) | (151,978)
Amounts received | (107,723) | (1,967,599)
Balance on June 30, 2025 | 63,382 | 2,192,679

46 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 12. | PROPERTY, PLANT AND EQUIPMENT

Consolidated | Jun. 30, 2025 | Dec. 31, 2024
Historical cost | Accumulated depreciation | Net value | Historical cost | Accumulated depreciation | Net value
In service |  |  |  |  |  |

Land | 249,147 | (37,223) | 211,924 | 249,221 | (35,570) | 213,651
Reservoirs, dams and watercourses | 3,344,633 | (2,557,107) | 787,526 | 3,339,053 | (2,519,660) | 819,393
Buildings, works and improvements | 1,099,285 | (893,597) | 205,688 | 1,095,305 | (883,276) | 212,029
Machinery and equipment | 2,972,819 | (2,180,730) | 792,089 | 2,950,542 | (2,143,232) | 807,310
Vehicles | 17,483 | (13,474) | 4,009 | 20,128 | (15,563) | 4,565
Furniture | 13,756 | (12,081) | 1,675 | 13,662 | (11,951) | 1,711
| 7,697,123 | (5,694,212) | 2,002,911 | 7,667,911 | (5,609,252) | 2,058,659
In progress | 1,907,173 | - | 1,907,173 | 1,656,446 | - | 1,656,446
| 9,604,296 | (5,694,212) | 3,910,084 | 9,324,357 | (5,609,252) | 3,715,105

Changes in PP&E are as follows:

Consolidated | Dec. 31, 2024 | Additions | Settled | Depreciation | Transfers (2) | Jun. 30, 2025
In service |  |  |  |  |  |

Land (1) | 213,651 | - | (12) | (1,715) | - | 211,924
Reservoirs, dams and watercourses | 819,393 | - | - | (37,448) | 5,581 | 787,526
Buildings, works and improvements | 212,029 | - | - | (10,321) | 3,980 | 205,688
Machinery and equipment | 807,310 | - | (2,519) | (35,752) | 23,050 | 792,089
Vehicles | 4,565 | - | (56) | (500) | - | 4,009
Furniture and utensils | 1,711 | - | - | (145) | 109 | 1,675
| 2,058,659 | - | (2,587) | (85,881) | 32,720 | 2,002,911
In progress | 1,656,446 | 307,229 | (23,782) | - | (32,720) | 1,907,173
| 3,715,105 | 307,229 | (26,369) | (85,881) | - | 3,910,084

| (1) | Certain land linked to concession agreements with no indemnity provision is amortized over the concession period.

| (2) | Balance related to the transfer of assets from construction in progress to in-service.

| 13. | INTANGIBLE ASSETS

Consolidated | Jun. 30, 2025 | Dec. 31, 2024
Historical cost | Accumulated amortization | Residual value | Historical cost | Accumulated amortization | Residual value
In service |  |  |  |  |  |

Useful life defined |  |  |  |  |  |
Temporary easements | 14,689 | (7,296) | 7,393 | 14,689 | (6,933) | 7,756
Onerous concession | 13,599 | (10,627) | 2,972 | 13,599 | (10,345) | 3,254
Assets of concession | 28,499,774 | (12,191,533) | 16,308,241 | 27,593,554 | (11,765,667) | 15,827,887
Assets of concession - GSF | 1,030,791 | (534,357) | 496,434 | 1,030,791 | (467,401) | 563,390
Others | 176,615 | (96,637) | 79,978 | 173,982 | (90,659) | 83,323
| 29,735,468 | (12,840,450) | 16,895,018 | 28,826,615 | (12,341,005) | 16,485,610
In progress | 352,286 | - | 352,286 | 320,290 | - | 320,290
| 30,087,754 | (12,840,450) | 17,247,304 | 29,146,905 | (12,341,005) | 16,805,900

Changes in intangible assets are as follow:

Consolidated | Dec. 31, 2024 | Additions | Settled | Amortization | Transfers (1) | Jun. 30, 2025
In service |  |  |  |  |  |
Useful life defined |  |  |  |  |  |

Temporary easements | 7,756 | - | - | (363) | - | 7,393
Onerous concession | 3,254 | - | - | (282) | - | 2,972
Assets of concession | 15,827,887 | 737 | (48,430) | (540,528) | 1,068,575 | 16,308,241
Assets of concession - GSF | 563,390 | - | - | (66,956) | - | 496,434
Others | 83,323 | - | - | (6,017) | 2,672 | 79,978
| 16,485,610 | 737 | (48,430) | (614,146) | 1,071,247 | 16,895,018
In progress | 320,290 | 69,768 | - | - | (37,772) | 352,286
Net intangible assets | 16,805,900 | 70,505 | (48,430) | (614,146) | 1,033,475 | 17,247,304

| (1) | Transfers were made from contract assets to intangible assets in the amount of R$1,012,937 in the period from January to June 2025 (R$995,496 in the period from January to June 2024).

47 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 14. | LEASING

| a) | Changes in the right of use assets

Consolidated | Real estate property | Vehicles | Total
Balances on December 31, 2024 | 263,463 | 123,707 | 387,170

Amortization (1) | (8,828) | (23,850) | (32,678)
Disposals (contracts terminated) | (1,455) | - | (1,455)
Addition | 4,523 | 22,671 | 27,194
Remeasurement (2) | 978 | 86 | 1,064
Balances on June 30, 2025 | 258,681 | 122,614 | 381,295

| (1) | Amortization of the Right of Use recognized in the Statement of income is net of use of the credits of PIS/Pasep and Cofins taxes on payments of rentals, a total R$465 in the period from January to June of 2025 (R$399 in the same period of 2024). The weighted average annual amortization rate is 6.62% for Real estate and 39.99% for Vehicles.

| (2) | The Company and its subsidiaries have identified events giving rise to revaluation and modifications of their principal contracts. The lease liability is being remeasured with a corresponding adjustment to the right-of-use asset.

| b) | Changes in leasing liabilities

| Consolidated
Balances on December 31, 2023 | 429,200

Addition | 27,194
Interest incurred (1) | 12,740
Leasing paid | (40,154)
Interest in leasing contracts paid | (2,914)
Disposals (contracts terminated) | (838)
Remeasurement (2) | 1,064
Balances on June 30, 2025 | 426,292
Current liabilities | 86,030
Non-current liabilities | 340,262

| (1) | Financial expenses recognized in the Statement of income are net of incorporation of the credits for PIS/Pasep and Cofins taxes on payments of rentals, in the amounts of R$556 in first half of 2025 (R$778 in first half of 2024).

| (2) | The Company and its subsidiaries identified events that give rise to restatement and modifications of their principal contracts; the leasing liability was remeasured with an adjustment to the asset of Right of Use.

Additions and settled in leases are non-cash transactions, and therefore are not reflected in the Statements of Cash Flows.

The potential right to recovery of PIS/Pasep and Cofins taxes embedded in the leasing consideration, according to the periods specified for payment, is as follows:

Cash flow | Consolidated | Parent Company
Nominal | Adjusted to present value | Nominal | Adjusted to present value
Consideration for the leasing | 649,349 | 426,292 | 4,932 | 2,779
Potential PIS/Pasep and Cofins (9.25%) | 34,944 | 20,311 | 456 | 257

48 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The cash flows of the leasing contracts are, in their majority, updated by the IPCA inflation index annually. Below is an analysis of maturity of lease contracts:

| Consolidated (nominal)

2025 | 44.724
2026 | 89.147
2027 | 71.566
2028 | 35.192
2029 | 31.243
2030 to 2048 | 377.477
Undiscounted values | 649.349
Embedded interest | (223.057)
Lease liabilities | 426.292

| 15. | SUPPLIERS

| Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024

Energy purchased for resale | 1,243,004 | 1,175,532 | 345,874 | 345,444
Energy on spot market - CCEE | 342,773 | 198,621 | 19,882 | -
Charges for use of energy network | 250,669 | 239,751 | 95 | 95
Itaipu Binacional | 216,086 | 210,488 | - | -
Gas purchased for resale | 187,644 | 215,596 | - | -
Materials and services (1) | 840,134 | 911,583 | 4,353 | 8,638
Total | 3,080,310 | 2,951,571 | 370,204 | 354,177

| (1) | The variation is primarily associated with the increase in the PLD (Settlement Price for the Difference Market) in the Southeast/Central-West submarket, which was not offset by the PLD in the Northeast and North submarkets, as these remained at their minimum value for most of the period. Additionally, the unfavorable hydrological conditions observed in the second quarter of 2025 resulted in a low MRE (Energy Reallocation Mechanism) performance, leading to higher pass-through amounts related to Hydrological Risk.

| (2) | Includes the balance of R$13,693 related to drawn risk operations, on June 30, 2025.

The exposure of the Company and its subsidiaries to exchange rate and liquidity risks related to suppliers is disclosed in note 25.

16. TAXES PAYABLE AND AMOUNTS TO BE REFUNDED TO CUSTOMERS

| Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Current |  |  |  |

ICMS | 154,155 | 145,575 | 21,532 | 18,401
Cofins (1) | 282,474 | 278,283 | 45,685 | 47,039
PIS/Pasep (1) | 61,323 | 60,835 | 9,864 | 10,330
INSS | 57,850 | 59,200 | 2,636 | 2,732
Other (2) | 193,569 | 180,628 | 57,605 | 54,644
| 749,371 | 724,521 | 137,322 | 133,146
Non-current |  |  |  |
Cofins (1) | 400,846 | 407,721 | - | -
PIS/Pasep (1) | 87,039 | 88,532 | - | -
| 487,885 | 496,253 | - | -
| 1,237,256 | 1,220,774 | 137,322 | 133,146
Amounts to be refunded to customers |  |  |  |
Current |  |  |  |
PIS/Pasep and Cofins | 30,710 | 185,699 | - | -
ICMS | 340,800 | 340,800 | - | -
| 371,510 | 526,499 |  |
Non-current |  |  | - |
PIS/Pasep and Cofins | 158,531 | 166,089 |  | -
| 158,531 | 166,089 | - | -
| 530,041 | 692,588 |  |

| (1) | Include the deferral on the financial remuneration of the contract asset and on the construction and improvement revenues linked to the transmission contracts.

| (2) | This includes the retention, at source, of income tax on the Interest on Equity declared. This tax was paid in the subsequent month, in accordance with the tax legislation. More details in note 20.

49 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The amounts of PIS/Pasep and Cofins to be refunded to consumers regarding the credits to be used by Cemig D and Gasmig due to the exclusion of ICMS from the calculation basis of these contributions represent the amounts of R$55,394 (R$208,578 on December 31, 2024) and R$133,847 (R$143,210 on December 31, 2024), respectively. The criteria for refunding Gasmig's PIS/Pasep and Cofins credits to consumers will still be the subject of discussions with the Minas Gerais Development Secretariat.

Movement of amounts to be refunded to consumers

| Consolidated
Balances on December 31, 2024 | 692,588

Consumers refunds (1) | (177,892)
Financial adjustments - Selic | 7,036
Other | 8,309
Balances on June 30, 2025 | 530,041

| (1) | This refers to a refund through the effective tax rate, related to tax credits recognized by the Company, in accordance with the provisions of Law No. 14,385/2022.

17. DEBENTURES

Financing source | Principal maturity | Annual financial cost % | Currency | Consolidated
Jun. 30, 2025 | Dec. 31, 2024
Current | Non-current | Total | Total
Cemig Distribuição |  |  |  |  |  |  |

Debentures - 3th Issue - 3rd Series | 2025 | IPCA + 5.10% | R$ | - | - | - | 334,188
Debentures – 7th Issue – 2nd Series | 2026 | IPCA + 4.10% | R$ | 1,053,659 | - | 1,053,659 | 2,048,454
Debentures - 8th Issue – 1st Series | 2027 | CDI + 1.35% | R$ | 2,714 | 500,000 | 502,714 | 502,548
Debentures – 8th Issue – 2nd Series | 2029 | IPCA + 6.1052% | R$ | 1,339 | 572,048 | 573,387 | 557,412
Debentures – 9th Issue – Single serie | 2026 | CDI + 2.05% | R$ | 1,019,555 | - | 1,019,555 | 2,030,078
Debentures – 10th Issue – 1st Series | 2029 | CDI + 0.80% | R$ | 20,297 | 400,000 | 420,297 | 417,151
Debentures – 10th Issue – 2nd Series | 2034 | IPCA + 6.1469% | R$ | 36,348 | 1,707,123 | 1,743,471 | 1,696,909
Debentures – 11th Issue – 1nd Series | 2031 | CDI + 0.55% | R$ | 40,191 | 1,000,000 | 1,040,191 | 1,028,493
Debentures – 11th Issue – 2nd Series | 2036 | IPCA + 6.5769% | R$ | 28,468 | 1,572,110 | 1,600,578 | 1,552,871
Debentures – 12th Issue – 1nd Series | 2032 | CDI + 0.86% | R$ | 66,498 | 1,640,000 | 1,706,498 | -
Debentures – 12th Issue – 2nd Series | 2040 | IPCA + 7.5467% | R$ | 17,825 | 873,138 | 890,963 | -
Debentures – 13th Issue – 1nd Series | 2030 | CDI+0,64% | R$ | 33,987 | 1,143,000 | 1,176,987 | -
Debentures – 13th Issue – 2nd Series | 2032 | CDI+0,80% | R$ | 22,615 | 752,000 | 774,615 | -
Gasmig |  |  |  |  |  |  |
Debentures – 8th Issue – Single serie | 2031 | IPCA + 5.27% | R$ | 148,506 | 906,766 | 1,055,272 | 1,025,100
Debentures – 9th Issue – Single serie | 2029 | IPCA + 0.47% | R$ | 1,023 | 200,000 | 201,023 | 200,190
Cemig Geração e Transmissão |  |  |  |  |  |  |
Debentures - 9th Issue – 1st Series | 2027 | CDI + 1.33% | R$ | 237,128 | 466,666 | 703,794 | 703,560
Debentures - 9th Issue – 2nd Series | 2029 | IPCA + 7.6245% | R$ | 896 | 340,875 | 341,771 | 332,268
Debentures – 10th Issue – Single serie | 2030 | CDI + 0.64% | R$ | 24,948 | 625,000 | 649,948 | -
(-) Discount on the issuance of debentures (1) |  |  |  | (1,722) | (1,936) | (3,658) | (5,326)
(-) Transaction costs |  |  |  | (7,047) | (180,081) | (187,128) | (144,596)
Total debentures |  |  |  | 2,747,228 | 12,516,709 | 15,263,937 | 12,279,300

| (1) | Discount on the sale price of the 2nd series of the Seventh issue of Cemig Distribuição.

The debentures issued by the subsidiaries are non-convertible. There are no agreements for renegotiation, nor debentures held in treasury.

50 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| a) | Debentures issues

Cemig GT - Debenture issue – 10th issue

On February 21, 2025, Cemig GT announced to the market the start of the public offering of 500,000 simple debentures, not convertible into shares, of the unsecured type, with an additional fiduciary guarantee, granted by Cemig, characterized as 'Green Bonds', issued in a single series as part of the 10th debenture issuance, with a unit par value of one thousand reais, totaling an initial amount of R$500,000, with the possibility of a 25% increase if the Additional Lot option were exercised. The transaction was carried out pursuant to CVM Resolutions.

On March 18, 2025, Cemig GT concluded the financial settlement of the 10th issue of simple debentures, which have a guarantee granted by Cemig. 625,000 debentures were issued, Totaling R$625,000, subscribed as follows:

Series | Quantity | Amount | Remuneration | Maturity | Amortization
Single | 625,000 | R$625,000 | CDI + 0.64% p.y. | 1,826 days | 48th and 60th months

The proceeds raised by Cemig GT through the issuance of debentures will be allocated to cash flow management, including—but not limited to—its operations and the reimbursement of investments previously made by the company, in accordance with the Framework.

Financing source | Entry Date | Principal maturity | Annual financial cost | Value |
BRAZILIAN CURRENCY |  |  |  |  |
Debentures – 10th Issue – Single Serie | March 18, 2025 | 2030 | CDI + 0.64% | 625,000 |
(-) Transaction costs |  |  |  | (3,266) |
Total |  |  |  | 621,734 |

We note, additionally, that Fitch Ratings allocates a credit risk of AAA+(bra) to this Issues.

Cemig D - Debenture issue – 12th issue

On February 21, 2025, Cemig D announced to the market the start of the public offering of two million simple debentures, not convertible into shares, of the unsecured type, with an additional fiduciary guarantee, in two series, of the 12th issue of debentures, with a nominal unit value of one thousand reais, totaling two billion reais, to be carried out under the terms of CVM regulations.

On March 18, 2025, Cemig D concluded the financial settlement of the 12th issue of debentures, in two series. Two million five hundred thousand debentures were issued, for a total of 2.5 billion reais, subscribed as follows:

Series | Quantity | Amount | Remuneration | Maturity | Amortization
Second Series | 1,640,000 | R$1,640,000 | CDI + 0.86% p.y. | 2,557 days | 72th and 84th months
Second Series | 860,000 | R$860,000 | IPCA + 7.5467% p.y. | 5,479 days | 156th, 168th and 150th months

51 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The funds obtained by Cemig D from this issue will be used to manage its cash flow, including, but not limited to, its operations and the reimbursement of investments, costs and expenses it has made, in alignment with the Framework, for the purpose of qualifying the debentures as 'Green Bonds'.

Financing source | Entry Date | Principal maturity | Annual financial cost % | Value |
BRAZILIAN CURRENCY |  |  |  |  |
Debentures – 12th Issue – 1st Series | March, 2025 | 2032 | CDI + 0.86% | 1,640,000 |
Debentures – 12th Issue – 2nd Series | March, 2025 | 2040 | IPCA + 7.5467% | 860,000 |
(-) Transaction costs |  |  |  | (45,368) |
Total |  |  |  | 2,454,632 |

We note, additionally, that Fitch Ratings allocates a credit risk of AAA+(bra) to this Issues.

13th issue of debentures - Cemig D

On April 2, 2025, Cemig D announced to the market the start of the public offering of 1,500,000 simple debentures, not convertible into shares, of the unsecured type, with an additional fiduciary guarantee, in two series, of the 13th issue of debentures, with a nominal unit value of one thousand reais, totaling 1.5 billion reais, with the possibility of this amount being increased by up to 33.3334% in the event the Over-Allotment Option is exercised. The transaction was carried out in accordance with CVM Resolutions.

On April 11, 2025, Cemig D concluded the financial settlement of the 13th issue of debentures, in two series. 1,895 thousand debentures were issued, for a total of 1.895 billion reais, subscribed as follows:

Serie | Quantity | Value in million | Rare | Deadline | Amortization
1st | 1,143,000 | R$1,143,000 | CDI + 0.64% p.a. | 1,831 days | 48nd and 60th meses
2nd | 752,000 | R$752,000 | IPCA + 0.80% p.a. | 2,562 days | 72th and 84th meses

The funds obtained by Cemig D from this issue will be used to manage its cash flow, including, but not limited to, its operations and the reimbursement of investments, costs and expenses it has made.

Financing source | Entry Date | Principal maturity | Annual financial cost % | Value
BRAZILIAN CURRENCY |  |  |  |
Debentures – 13th Issue – 1st Series | April 2025 | 2030 | CDI + 0.64% | 1,143,000
Debentures – 13th Issue – 2nd Series | April 2025 | 2032 | CDI + 0.80% | 752,000
(-) Transaction costs |  |  |  | (6,330)
Total |  |  |  | 1,888,670

Finally, it is reported that the credit rating agency Fitch Ratings assigned a AAA (bra) rating to the issuance.

52 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Guarantees

The guarantees of the debt Balance at loans and financing, on June 30, 2025, were as follows:

| Jun. 30, 2025

Promissory notes and Sureties | 1,049,179
Sureties | 12,972,959
Without guarantee | 1,241,799
Total | 15,263,937

Composition and consolidated changes on debentures

The Company's debt has an average repayment period of 6 years. The consolidated breakdown of debentures, by index, considering their maturities, is as follows:

Consolidated | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 onwards | Total
Index |  |  |  |  |  |  |

IPCA (1) | 234,893 | 1,188,504 | 143,174 | 436,015 | 783,708 | 4,472,807 | 7,259,101
CDI (2) | 468,956 | 1,233,333 | 800,000 | 300,000 | 1,117,333 | 4,276,000 | 8,195,622
Total by index | 703,849 | 2,421,837 | 943,174 | 736,015 | 1,901,041 | 8,748,807 | 15,454,723
(-) Transaction costs | (3,162) | (7,328) | (3,118) | (9,535) | (14,176) | (149,809) | (187,128)
(-) Discount | (1,722) | (1,722) | - | - | (107) | (107) | (3,658)
Total | 698,965 | 2,412,787 | 940,056 | 726,480 | 1,886,758 | 8,598,891 | 15,263,937

| (1) | Expanded National Customer Price (IPCA) Index;

| (2) | CDI: Interbank Rate for Certificates of Deposit;

The indexers used for monetary updating of debentures had the following variations:

Indexer | Accumulated change in second half of 2025 (%) | Accumulated change in second half of 2024 (%) | Accumulated change in second half of 2025 (%) | Accumulated change in second half of 2024 (%)
IPCA | 2.99 | 2.48 | 0.93 | 1.05
CDI | 6.36 | 5.22 | 3.33 | 2.53

53 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The changes in debentures are as follows:

| Consolidated

Balance on December 31, 2024 | 12,279,300
Debenture Issuance | 5,020,000
Transaction costs | (54,964)
Net Proceeds from Debenture Issuance | 4,965,036
Monetary variation | 186,855
Exchange variation | 715,579
Amortization of transaction cost | 12,431
Financial charges paid | (526,396)
Amortization of financing | (2,368,868)
Balance on June 30, 2025 | 15,263,937

Borrowing costs, capitalized

The subsidiaries Cemig D and Gasmig considered the costs of debentures linked to construction in progress as construction costs of intangible and concession contract assets, as follows:

| Jan to Jun/2025 | Jan to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Costs of debentures | 715,579 | 494,658 | 420,486 | 258,718
Financing costs on intangible assets and contract assets (1) | (72,141) | (35,260) | (37,155) | (17,989)
Net effect in income or loss | 643,438 | 459,398 | 383,331 | 240,729

| (1) | The average capitalization rate was 13.83% in the period from January to June 2025 (11.26% in the period from the first half of 2024).

The amounts of the capitalized borrowing costs have been excluded from the statement of cash flows, in addition to cash flow of investment activities, as they do not represent an outflow of cash for acquisition of the related asset.

Restrictive covenants

There are early maturity clauses for cross-default in the event of non-payment by Cemig GT or by the Company, of any pecuniary obligation with individual or aggregate value greater than R$50 million (“cross default”).

54 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The Company and its subsidiaries have contracts with financial covenants as follows:

Title - Security | Covenant | Ratio required - Issuer | Ratio required Cemig (guarantor) | Compliance required
7th and 8th Debentures Issue Cemig D | Net debt / Ebitda adjusted (1) | Less than 3.5 | Less than 3.0 | Semi-annual and annual
8th Debentures Issue Gasmig Single series (2) | EBITDA/Debt servicing Net debt/EBITDA | 1.3 or more 3.0 or less | - | Annual Annual
9th Debenture Issue CEMIG GT 1st and 2nd Series (3) | Net debt / Adjusted Ebitda (1) | Equal to or less than: 3.5 | 3.0 from Dec. 31st, 2022, to Jun. 30th, 2026, and, 3.5 from Dec. 31st, 2026, onwards | Semi-annual and annual
9th Debentures Issue Cemig D | Net debt/EBITDA | Equal to or less than: 3.5 on/after Jun. 30, 2023 | Equal to or less than: 3.5 on/after Jun. 30, 2023 | Semi-annual and annual
10th Debentures Issue Cemig D | Net debt/EBITDA | Equal to or less than: 3.5 from Jun. 30st, 2024 to Jun. 30th, 2029 4.0 from Jun. 30st, 2029 onwards | Equal to or less than: 3.0 by Jun. 30th, 2026 3.5 from Jul. 1st, 2026, to Jun. 30th, 2029 4.0 from Jun. 30st, 2029 onwards | Semi-annual and annual
11th Debentures Issue Cemig D | Net debt/EBITDA | Equal to or less than: 3.5 from Dec. 31st, 2024, to Jun. 30th, 2029 4.0 from Jun. 30st, 2029 onwards | Equal to or less than: 3.0 by Jun. 30th, 2026 3.5 from Jul. 1st, 2026, to Jun. 30th, 2029 4.0 from Jun. 30st, 2029 onwards | Semi-annual and annual
9th Debentures Issue Gasmig | Ebitda/Net financial income Net debt / Ebitda | 1.3 or less from December 31, 2024, onwards 3 or less from December 31, 2024, onwards | - | Annual
10th Debentures Issue Cemig GT | Net debt / Ebitda | 3.5 or less from June 30, 2025, until June 30, 2029 4 or less from June 30, 2029, onwards | Equal to or less than: 3.0 by Jun. 30, 2026 3.5 from Jul. 1, 2026, to Jun. 30, 2029 4.0 from Jun. 30, 2029, onwards | Semi-annual and annual
12th Debentures Issue Cemig D | Net debt / Ebitda | 3.5 or less from June 30, 2025, until June 30, 2029 4 or less from June 30, 2029, onwards | Equal to or less than: 3.0 by Jun. 30, 2026 3.5 from Jul. 1, 2026, to Jun. 30, 2029 4.0 from Jun. 30, 2029, onwards | Semi-annual and annual
13th Debentures Issue Cemig D | Net debt / Ebitda | 3.5 or less from June 30, 2025, until June 30, 2029 4 or less from June 30, 2029, onwards | Equal to or less than: 3.0 by Jun. 30, 2026 3.5 from Jul. 1, 2026, to Jun. 30, 2029 4.0 from Jun. 30, 2029, onwards | Semi-annual and annual

| (1) | Adjusted Ebtida corresponds to earnings before interest, income taxes and social contribution on net income, depreciation and amortization, from which non-operating income, any credits and non-cash gains that increase net income are subtracted, to the extent that they are non-recurring, and any cash payments made on a consolidated basis during such period in respect of non-cash charges that were added back in the determination of Ebtida in any prior period, and increased by non-cash expenses and non-cash charges, to the extent that they are non-recurring.

| (2) | Non-compliance with financial covenants implies non-automatic early maturity. If early maturity is declared by the debenture holders, Gasmig must make the payment upon receipt of the notification.

| (3) | Non-compliance with financial covenants implies early maturity resulting in the immediate enforceability of payment by CEMIG GT of the Unit Nominal Value or Updated Unit Nominal Value of the Debentures, as the case may be, plus remuneration, in addition to the other charges due, regardless of judicial or extrajudicial notice, notification or interpellation.

Management monitors these indexes continuously.

55 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Linked funds under a debenture issue

On June 30, 2025, the Company had a balance of R$45,106 relating to restricted funds (R$235,206 on December 31, 2024). This growth is essentially associated with Cemig D's 7th issue of debentures.

According to the Fiduciary Assignment Agreement of the 7th debenture issuance, Cemig D must retain, in a restricted account, monthly during the six months preceding the installment's due date, an amount equivalent to one-sixth of the projected value of the installment, averaging R$181,000. These retentions were made between December 2024 and May 2025. In June 2025, the penultimate installment was paid.

18. POST-EMPLOYMENT OBLIGATIONS

Changes in net liabilities

Consolidated | Pension plans and retirement supplement plans - Forluz | Health plan | Dental plan | Total
Net liabilities on December 31, 2024 | 1,701,224 | 2,559,028 | 45,254 | 4,305,506
Expense recognized in Statement of income | 105,047 | 152,830 | 2,710 | 260,587
Past service cost | - | (47,796) | (1,062) | (48,858)
Contributions paid | (81,066) | (87,812) | (1,165) | (170,043)
Actuarial losses (gains) | - | (8,604) | (2,402) | (11,006)
Net liabilities on June 30, 2025 | 1,725,205 | 2,567,646 | 43,335 | 4,336,186
|  |  | Jun. 30, 2025 | Dec. 31, 2024

Current liabilities |  |  | 218,428 | 232,898
Non-current liabilities |  |  | 4,117,758 | 4,072,608

Parent company | Pension plans and retirement supplement plans - Forluz | Health plan | Dental plan | Total
Net liabilities at December 31, 2024 | 372,843 | 163,784 | 3,710 | 540,337
Expense recognized in Statement of income | 23,005 | 9,794 | 222 | 33,021
Past service cost | - | (1,075) | (18) | (1,093)
Contributions paid | (3,989) | (10,196) | (66) | (14,251)
Actuarial losses (gains) | - | 1,664 | (530) | 1,134
Net liabilities on June 30, 2025 | 391,859 | 163,971 | 3,318 | 559,148
|  |  | Jun. 30, 2025 | Dec. 31, 2024

Current liabilities |  |  | 25,839 | 20,406
Non-current liabilities |  |  | 533,309 | 519,931

Actuarial gains and losses, net of income tax and social contribution, are non-cash items and, therefore, are not reflected in the statements of cash flows.

The amounts recorded under expenses recognized in the consolidated income statement refer to portions of post-employment benefit obligations, totaling R$211,729 in the first half of 2025 (R$243,837 in the first half of 2024).

56 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Health and Dental Plans

In January and April 2025, the enrollment period for the new health plan, Premium Plan, was reopened to all active employees participating in the PSI. The Premium Plan is fully funded by the Company. During both periods, a portion of employees migrated to the Premium Plan, reducing the number of active employees covered by the PSI.

In accordance with CPC 33 (R1) / IAS 19, this situation qualifies as a curtailment event, which required the Company to remeasure its post-employment benefit obligations as of March 31, 2025, considering the January 2025 migration window, and as of the reporting date of June 30, taking into account the April 2025 migration window.

The effects and assumptions of the two events related to the curtailment of the health and dental plans are presented in the table below:

Consolidated | Curtailment June 30, 2025 | Curtailment March 31, 2025 | Actuarial Report 2024
Health Plan | Dental Plan | Health Plan | Dental Plan | Health Plan | Dental Plan
Discount rate | 11.85% | 11.85% | 12.32% | 12.32% | 12.23% | 12.23%
Past service cost | (20,637) | (524) | (27,159) | (538) | - | -
Actuarial losses (gains) | 50,164 | (1,431) | (58,767) | (970) | (518,980) | (10,387)

The remaining assumptions remained consistent with those presented in 2024. The discount rate as of June 30, 2025 impacted the liability balances, resulting in an actuarial loss of R$50,164 for the health plan and an actuarial gain of R$1,431 for the dental plan.

Ruling in action to annul a period of validity in a Collective Employee Health Plan Agreement

On February 19, 2025, the Specialized Collective Employee Agreement section of the Higher Employment-law Appeal Court (TST) published the judgment given in an Ordinary Employment-law Appeal completed on December 9, 2024.

This decision determined cessation, as from December 31, 2023, of the period of validity of the clauses that specified automatic extension, for successive equal periods, of Clause 17 of the Collective Work Agreement of 2010, and Clause 4 of the Collective Work Agreement of 2016. These clauses ensured compliance by the Company of its obligations to pay post-employment benefits of the health plan (PSI) to retirees and active employees.

Due to the specific nature of this matter, the Company and its legal advisors have, at this time, the probability of loss was assessed as possible in these interim financial statements, and therefore did not impact the amounts recorded under post-employment liabilities for the health and dental plans.

57 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Funding of the 2022 Deficit

In April 2025, the Company began making escrow deposits to Forluz, corresponding to the installments related to the funding of the 2022 deficit of Plan A. As of June 30, 2025, the total amount deposited was R$7,547, representing 50% of the minimum required amount, in compliance with the contributory parity rule.

| 19. | PROVISIONS

| Consolidated
Labor | Civil | Tax | Regulatory | Others | Total
Customer relations | Other
Balances at December 31, 2024 | 467,387 | 150,537 | 61,684 | 1,083,225 | 55,349 | 34,861 | 1,853,043
Additions | 119,209 | 56,308 | 16,673 | 43,623 | 15,563 | 34,124 | 285,500
Reversals | (15,647) | (1,926) | (15) | (131) | (7,274) | (8,817) | (33,810)
Settled | (89,325) | (24,163) | (7,330) | (958) | (12,902) | (10,110) | (144,788)
Balances at June 30, 2025 | 481,624 | 180,756 | 71,012 | 1,125,759 | 50,736 | 50,058 | 1,959,945

| Parent Company
Labor | Civil | Tax | Regulatory | Others | Total
Customer relations | Other
Balances at December 31, 2024 | 50,420 | 7,685 | 2,142 | 256,994 | 13,526 | 3,141 | 333,908
Additions | 17,386 | 970 | 395 | 11,853 | 2,613 | 3,478 | 36,695
Reversals | (2,842) | (1,926) | - | - | - | (475) | (5,243)
Settled | (17,386) | (36) | (33) | (275) | (330) | (430) | (18,490)
Balances at June 30, 2025 | 47,578 | 6,693 | 2,504 | 268,572 | 15,809 | 5,714 | 346,870

Additionally, there are lawsuits whose expected loss is considered possible, since the Company's and its subsidiaries' legal advisors assessed them as having a possible chance of success, and no provision was recorded, as follows:

Possible losses
| Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Labor | 1,062,521 | 1,041,962 | 193,751 | 182,297
Civil |  |  |  |
Customer relations | 1,071,842 | 743,167 | 12,360 | 13,784
Other civil actions | 677,468 | 636,552 | 50,486 | 48,863
| 1,749,310 | 1,379,719 | 62,846 | 62,647
Tax | 3,357,376 | 3,329,441 | 641,753 | 659,133
Regulatory | 3,159,413 | 3,594,831 | 1,750,902 | 1,664,526
Others | 2,120,755 | 2,113,815 | 388,745 | 381,549
Total | 11,449,375 | 11,459,768 | 3,037,997 | 2,950,152

The Cemig and its subsidiaries management, in view of the extended period and the Brazilian judiciary, tax and regulatory systems, believes that it is not practical to provide information that would be useful to the users of this interim financial information in relation to the timing of any cash outflows, or any possibility of reimbursements. It is expected that most of the provisioned amounts will be paid out in periods of more than 12 months.

The Cemig and its subsidiaries believe that any disbursements in excess of the amounts provisioned, when the respective claims are completed, will not significantly affect the Company and its subsidiaries’ results of operations or financial position.

58 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The main provisions and contingent liabilities are disclosed in note 24 to the financial statements for the year ended December 31, 2024. For the period ended June 30, 2025, except as indicated below, there were no material changes in the progress of the proceedings or in the amounts provisioned.

In the first half of 2025, the main changes in contingent liabilities were related to the following proceedings:

Consumer Relations

Electricity Supply

In June 2025, the Public Prosecutor’s Office of the State of Minas Gerais (MPMG) filed a public civil action seeking the Company’s conviction for collective moral damages, as well as an obligation to improve the electricity supply service in a municipality in Minas Gerais. The claim is based on allegations of repeated and prolonged failures in electricity supply across various areas of the municipality. As of June 30, 2025, the amount of the contingency is R$141,807, with the likelihood of loss assessed as possible.

Regulatory

The Company and its subsidiaries are involved in regulatory proceedings in which the contingency amounts were revised due to an unfavorable court ruling against the Company. As of June 30, 2025, the amount of these contingencies is R$716,553 (R$636,619 as of December 31, 2024).

Accounting for energy sale transactions through the Electric Energy Trading Chamber (CCEE)

Since August 2002, AES Sul Distribuidora has been legally challenging the accounting criteria applied to energy sale transactions in the Wholesale Energy Market (MAE), the predecessor of the Electric Energy Trading Chamber (CCEE), during the rationing period. In February 2006, the Company obtained a preliminary favorable court ruling requiring ANEEL to comply with the distributor’s request and, together with CCEE, to reprocess and settle the transactions carried out during the rationing period, disregarding Dispatch No. 288 of 2002.

This measure was to be implemented by CCEE starting in November 2008 and would result in an additional disbursement for the Company related to short-term energy purchase expenses with CCEE. In June 2025, a court ruling was published with votes in favor of the Company's arguments, leading to a reassessment of the likelihood of loss from “possible” to “remote.” The amount of the contingency was R$680,844 as of December 31, 2024.

Other proceedings in the ordinary course of business

Breach of contract

The Company and its subsidiaries are involved in administrative proceedings, which increased during the first half of 2025 due to the approval of expert calculations. As of June 30, 2025, the amount of the contingency is R$283,045 (R$200,153 as of December 31, 2024), with the likelihood of loss assessed as possible.

59 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Volta do Rio

The Company and its subsidiary Volta do Rio are defendants in a notice of violation issued in 2022 by the Secretariat of Federal Assets (SPU/CE), which determined that landfills, ripraps, and towers used for the installation of the wind generation system of CE Volta do Rio were located within the beach zone. As a result, the Wind Power Plant Volta do Rio was subject to the following penalties: (i) demolition and/or removal of the structures and installed equipment, if not eligible for regularization; (ii) a monthly fine for each square meter impacted by the installations. The Wind Power Plant Volta do Rio submitted a defense against the notice and filed an administrative appeal. The contingency calculation considers the monthly fine applied to each square meter of the areas that were filled, built upon, or where works, fences, or installations related to the Wind Power Plant Volta do Rio were carried out. As of June 30, 2025, the amount of the contingency is R$496,540 (R$311,432 as of December 31, 2024), with the likelihood of loss assessed as possible.

Light for All Program

The Company is involved in disputes regarding alleged damages resulting from supposed contractual breaches during the implementation of part of the rural electrification initiative known as the Light for All Program.

The reduction in the contingent liability is due to the judgment of appeals, during which the Court of Justice of the State of Minas Gerais (TJMG) assigned to the Company the tax burden related to the ISSQN difference, resulting from the increase in the tax base. Consequently, the likelihood of loss was reassessed from possible to probable, for the amount of R$2,868 as of June 30, 2025. On the other hand, the court dismissed the Company’s responsibility for the alleged contractual imbalance, and the likelihood of loss was reassessed from possible to remote, for the amount of R$414,067 as of June 30, 2025 (R$335,585 as of December 31, 2024).

| 20. | EQUITY AND REMUNERATION TO SHAREHOLDERS

| a) | Share capital

On June 30, 2025, the Company’s issued and share capital is R$14,308,909 represented by 956,601,911 common shares and 1,905,179,984 preferred shares, both of them with nominal value of R$5.00.

| b) | Earnings per share

The number of shares included in the calculation of basic and diluted earnings, is described in the table below:

60 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Number of shares
Jun. 30, 2025 | Dec. 31, 2024 (restated)
Common shares already paid up | 956,601,911 | 956,601,911
Shares in treasury | (132) | (132)
Total common shares | 956,601,779 | 956,601,779
Preferred shares already paid up | 1,905,179,984 | 1,905,179,984
Shares in treasury | (1,099,880) | (1,099,880)
Total preferred shares | 1,904,080,104 | 1,904,080,104
Total | 2,860,681,883 | 2,860,681,883

Basic and diluted earnings per share

The calculation of basic and diluted earnings per share is as follows:

| Jan to Jun/2025 | Jan to Jun/2024 (restated) | Apr to Jun/2025 | Apr to Jun/2024 (restated)
Net income for the period (A) | 2,225,881 | 2,840,381 | 1,187,633 | 1,687,993
Total shares (B) | 2,860,681,883 | 2,860,681,883 | 2,860,681,883 | 2,860,681,883
Basic and diluted earnings per share (A/B) (R$) | 0.78 | 0.99 | 0.42 | 0.59

| c) | Remuneration to shareholders

Declaration of Interest on Equity

The Company’s Executive Board decided to declare Interest on Equity as follows:

Declaration date | Entitled shareholders (1) | Amount | Income tax withheld
March 20, 2025 | March 25, 2025 | 541,006 | (51,738)

June 17, 2025 | June 23, 2025 | 596.758 | (56.677)
|  | 1.137.764 | (108.415)

| (1) | Shareholders who have their names entered in the Register of Registered Shares on the dates indicated are entitled.

| Consolidated | Parent Company
Balances as of December 31, 2024 | 3,611,198 | 3,608,821
Proposed dividends and interest on equity, | 1,137,764 | 1,137,764
Proposed dividends – Non-controlling interests | 740 | -
Withholding income tax on interest on equity (IRRF) | (108,415) | (108,415)
Dividends and interest on equity paid | (1,775,716) | (1,775,266)
Balances as of June 30, 2025 | 2,865,571 | 2,862,904

61 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 21. | NET REVENUE

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Revenue from supply of energy (a) | 17,060,791 | 16,163,221 | 2,262,710 | 2,239,856
Revenue from use of the electricity distribution systems (TUSD) | 2,843,504 | 2,420,853 | - | -
CVA and Other financial components (1) | 196,716 | 19,119 | - | -
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers - realization | - | 512,852 | - | -
Transmission revenue (b) |  |  |  | -
Transmission operation and maintenance revenue | 174,636 | 146,278 | - | -
Transmission construction revenue | 245,474 | 168,285 | - | -
Interest revenue arising from the financing component in the transmission contract asset (note 10) | 203,848 | 285,822 | - | -
Generation indemnity revenue (note 9.1) | 58,129 | 42,030 | - | -
Distribution construction revenue (3) | 2,472,991 | 2,047,640 | - | -
Adjustment to expectation of cash flow from indemnifiable financial assets of distribution concession | 79,821 | 53,209 | - | -
Revenue on financial updating of the Concession Grant Fee (note 9.2) | 257,316 | 235,636 | - | -
Transactions in energy on the CCEE | 61,508 | 55,137 | 38,906 | 25,093
Supply of gas | 1,886,274 | 1,892,072 | - | -
Fine for violation of service continuity indicator | (86,761) | (83,011) | - | -
Other revenues (c) | 2,037,558 | 1,398,810 | 1,487 | 9,968
Deductions on revenue (d) | (6,861,279) | (6,864,095) | (326,410) | (322,133)
Net revenue | 20,630,526 | 18,493,858 | 1,976,693 | 1,952,784

| (1) | This income derives from the total additions and amortizations shown in note 9.3.

| (2) | In May 2024, Cemig D completed the refund of amounts related to the reimbursement of PIS/Pasep and Cofins tax credits to consumers, which had been returned through tariff adjustments. Accordingly, the revenue recovery related to the realization of the liability was completed by the second quarter of 2024.

| (3) | This variation is associated with the increased number of projects carried out by Cemig D, primarily in electricity distribution networks, in line with the Distribution Development Plan (PDD), and by Gasmig, in line with the Centro-Oeste Project, which includes an estimated 300 km of additional gas pipelines. The project is expected to be completed in the second half of 2026.

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Revenue from supply of energy (a) | 8.686.379 | 8.144.077 | 1.165.259 | 1.088.351
Revenue from use of the electricity distribution systems (TUSD) | 1.414.496 | 1.251.554 | - | -
CVA and Other financial components (1) | 70.394 | (56.556) | - | -
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers – realization (2) | - | 190.186 | - | -
Transmission revenue (b) |  |  |  |
Transmission operation and maintenance revenue | 114.197 | 79.716 | - | -
Transmission construction revenue | 179.130 | 104.891 | - | -
Interest revenue arising from the financing component in the transmission contract asset | 30.416 | 134.430 | - | -
Generation indemnity revenue | 31.201 | 20.596 | - | -
Distribution construction revenue (3) | 1.324.446 | 1.154.213 | - | -
Adjustment to expectation of cash flow from indemnifiable financial assets of distribution concession | 26.618 | 22.258 | - | -
Revenue on financial updating of the Concession Grant Fee (note 9.2) | 118.859 | 107.011 | - | -
Transactions in energy on the CCEE | 39.585 | 14.380 | 37.913 | 12.052
Supply of gas | 965.491 | 972.424 | - | -
Fine for violation of service continuity indicator | (39.949) | (37.084) | - | -
Other revenues (c) | 1.315.539 | 761.856 | 529 | 1.645
Deductions on revenue (d) | (3.490.507) | (3.427.961) | (171.230) | (159.460)
Net revenue | 10.786.295 | 9.435.991 | 1.032.471 | 942.588

| (1) | This income derives from the total additions and amortizations shown in note 9.3.

| (2) | In May 2024, Cemig D completed the refund of amounts related to the reimbursement of PIS/Pasep and Cofins tax credits to consumers, which had been returned through tariff adjustments. Accordingly, the revenue recovery related to the realization of the liability was completed by the second quarter of 2024.

| (3) | This variation is associated with the increased number of projects carried out by Cemig D, primarily in electricity distribution networks, in line with the Distribution Development Plan (PDD), and by Gasmig, in line with the Centro-Oeste Project, which includes an estimated 300 km of additional gas pipelines. The project is expected to be completed in the second half of 2026.

62 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| a) | Revenue from energy supply

| Consolidated | Parent Company
MWh (1) | R$ | MWh (1) | R$
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Residential (2) | 7,505,795 | 7,220,769 | 6,796,706 | 6,193,215 | - | - | - | -
Industrial | 8,987,941 | 8,642,000 | 2,482,602 | 2,625,270 | 3,784,474 | 4,016,273 | 882,411 | 935,557
Commercial, services and others | 6,306,375 | 6,145,364 | 3,297,030 | 3,284,181 | 943,505 | 947,851 | 193,622 | 196,835
Rural | 1,723,080 | 1,677,669 | 1,160,217 | 1,132,914 | 62,562 | 31,234 | 11,604 | 6,376
Public authorities | 647,665 | 531,105 | 457,049 | 455,781 | - | - | - | -
Public lighting | 469,554 | 492,696 | 268,381 | 262,915 | - | - | - | -
Public services | 253,970 | 485,807 | 296,545 | 359,976 | - | - | - | -
Subtotal | 25,894,380 | 25,195,410 | 14,758,530 | 14,314,252 | 4,790,541 | 4,995,358 | 1,087,637 | 1,138,768
Own consumption | 14,917 | 15,898 | - | - | - | - | - | -
Unbilled revenue | - | - | 45,245 | (86,912) | - | - | (19,709) | 6,671
| 25,909,297 | 25,211,308 | 14,803,775 | 14,227,340 | 4,790,541 | 4,995,358 | 1,067,928 | 1,145,439
Wholesale supply to other concession holders (3) | 9,868,191 | 8,228,300 | 2,354,277 | 2,017,349 | 4,863,220 | 4,238,995 | 1,236,403 | 1,128,051
Wholesale supply unbilled, net | - | - | (97,261) | (81,468) | - | - | (41,621) | (33,634)
Total | 35,777,488 | 33,439,608 | 17,060,791 | 16,163,221 | 9,653,761 | 9,234,353 | 2,262,710 | 2,239,856

| (1) | Information not reviewed by independent auditors.

| (2) | The increase in energy supply to residential customers is mainly due to the growth in the number of consumers.

| (3) | Includes Energy Trading Assignment Contracts (CCEARs) within the Regulated Market through the Surplus and Deficit Compensation Mechanism (MCSD), sales in the Free Contracting Market (ACL), and revenues from Generation Asset Management (GAG) related to the 18 hydroelectric power plants from Lot D of Auction No. 12/2015.

| Consolidated | Parent Company
MWh (1) | R$ | MWh (1) | R$
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Residential (2) | 3,667,850 | 3,552,969 | 3,374,148 | 3,066,719 | - | - | - | -
Industrial | 4,676,668 | 4,440,313 | 1,278,269 | 1,326,674 | 1,978,730 | 2,090,040 | 459,919 | 480,878
Commercial, services and others | 3,141,492 | 3,009,442 | 1,650,182 | 1,609,719 | 476,561 | 492,665 | 99,582 | 101,524
Rural | 984,250 | 927,534 | 643,413 | 599,558 | 26,694 | 15,076 | 5,003 | 2,944
Public authorities | 384,704 | 270,497 | 229,246 | 232,496 | - | - | - | -
Public lighting | 235,650 | 244,326 | 140,046 | 131,933 | - | - | - | -
Public services | 58,262 | 235,023 | 146,260 | 174,633 | - | - | - | -
Subtotal | 13,148,876 | 12,680,104 | 7,461,564 | 7,141,732 | 2,481,985 | 2,597,781 | 564,504 | 585,346
Own consumption | 6,992 | 7,710 | - | - | - | - | - | -
Unbilled revenue | - | - | 77,702 | 68,410 | - | - | (6,433) | (10,624)
| 13,155,868 | 12,687,814 | 7,539,266 | 7,210,142 | 2,481,985 | 2,597,781 | 558,071 | 574,722
Wholesale supply to other concession holders (3) | 5,042,543 | 3,952,637 | 1,162,502 | 966,330 | 2,408,830 | 2,116,554 | 611,085 | 540,349
Wholesale supply unbilled, net | - | - | (15,389) | (32,395) | - | - | (3,897) | (26,720)
Total | 18,198,411 | 16,640,451 | 8,686,379 | 8,144,077 | 4,890,815 | 4,714,335 | 1,165,259 | 1,088,351

Information not reviewed by independent auditors.

The increase in energy supply to residential customers is mainly due to the growth in the number of customers.

Includes Energy Trading Assignment Contracts (CCEARs) within the Regulated Market through the Surplus and Deficit Compensation Mechanism (MCSD), sales in the Free Contracting Market (ACL), and revenues from Generation Asset Management (GAG) related to the 18 hydroelectric power plants from Lot D of Auction No. 12/2015.

63 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| b) | Transmission concession revenue

The margin defined for each performance obligation from the transmission concession contract is as follows:

Consolidated | Jan to Jun/2025 | Jan to Jun/2024
Construction and upgrades | Operation and maintenance (1) | Total | Construction and upgrades | Operation and maintenance | Total

Transmission concession revenue (2) | 245,474 | 280,572 | 526,046 | 168,285 | 146,278 | 314,563
Transmission infrastructure construction cost | (192,244) | (361,249) | (553,493) | (100,274) | (135,867) | (236,141)
Margin | 53,230 | (80,677) | (27,447) | 68,011 | 10,411 | 78,422
Mark-up (%) | 27.69% | -22.33% | -4.96% | 67.83% | 7.66% | 33.21%

Consolidated | Apr to Jun/2025 | Apr to Jun/2024
Construction and upgrades | Operation and maintenance (1) | Total | Construction and upgrades | Operation and maintenance (1) | Total
Transmission concession revenue (2) | 179,130 | 134,139 | 313,269 | 104,891 | 79,716 | 184,607
Transmission infrastructure construction cost | (138,924) | (281,081) | (420,005) | (72,720) | (62,211) | (134,931)
Margin | 40,206 | (146,942) | (106,736) | 32,171 | 17,505 | 49,676
Mark-up (%) | 28.94% | -52.28% | -25.41% | 44.24% | 28.14% | 36.82%

| (1) | Transmission operation and maintenance revenue from intercompany operations is not eliminated from consolidated revenue for margin calculation purposes.

| (2) | This breakdown does not include the financial remuneration of the contract asset, which is also part of the transmission concession revenue.

| c) | Other revenues

| Consolidated
Jan to Jun/2025 | Jan to Jun/2024

Charged service | 7,973 | 8,961
Services rendered | 63,204 | 45,197
Low-income subsidy (1) | 244,077 | 218,617
SCEE subsidy (2) | 187,412 | 44,698
Eletrobras Subsidy (3) | 17,282 | 104,268
Tariff flags subsidy (4) | 110,023 | 37,871
CDE subsidy to pay for tariff discounts (5) | 1,006,773 | 589,751
Subsidies linked to the EUST (Tariff for the Use of the Distribution System) | 36,848 | 36,726
Rental and leasing | 345,720 | 259,576
Other | 18,246 | 53,145
Total | 2,037,558 | 1,398,810

(1) |  | The increase is due to the growth in the number of consumer units in 2025 and the annual tariff adjustment for 2025.

(2) |  | The subsidy under the Electric Energy Compensation System (SCEE) refers to an amount allocated to cover tariff benefits for consumer units participating in the SCEE, introduced by ANEEL as part of the 2023 tariff review. The forecast granted in 2023 exceeded the amounts actually accrued, and the adjustment made in 2024 surpassed the subsidy amount for that year, resulting in a revenue reversal and a lower figure for the first half of 2024. Additionally, the variation is due to the increase in discounts granted by Cemig, primarily to the “Incentivized Source Load” and “GD II” consumer classes.

(3) |  | With Provisional Measure No. 1,212/2024, the funds from Eletrobras' contribution to the CDE (Energy Development Account) were advanced to settle the Covid Account and the Water Scarcity Account, resulting in a reduction of the direct contributions to the CDE in 2025 compared to 2024.

(4) |  | This subsidy is affected by the activation of the Yellow and Red tariff flags. During the first half of 2025, the 'Red Flag – Level 1' was triggered in May and June. In contrast, during the first half of 2024, no tariff flags were activated, with the Green Flag remaining in effect throughout the period.

(5) |  | The amount allocated to this subsidy is defined in the Ratifying Resolution issued for each tariff adjustment. The variation is mainly due to the increase in the discounts granted by Cemig, particularly to the 'Encouraged Source Load' and 'Distributed Generation II' customer classes.

64 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Consolidated
Apr to Jun/2025 | Apr to Jun/2024
Charged service | 4.336 | 4.335
Services rendered | 35.800 | 20.465
Low-income subsidy (1) | 118.483 | 109.635
SCEE subsidy (2) | 216.853 | (3.546)
Eletrobras Subsidy (3) | 17.282 | 104.268
Tariff flags subsidy (4) | 88.148 | 19.595
CDE subsidy to pay for tariff discounts (5) | 634.407 | 333.622
Subsidies linked to the EUST (Tariff for the Use of the Distribution System) | 12.745 | 14.918
Rental and leasing | 180.185 | 139.342
Other | 7.300 | 19.222
Total | 1.315.539 | 761.856

| (1) | The increase is due to the growth in the number of consumer units in 2025 and the annual tariff adjustment for 2025.

| (2) | The subsidy under the Electric Energy Compensation System (SCEE) refers to an amount allocated to cover tariff benefits for consumer units participating in the SCEE, introduced by ANEEL as part of the 2023 tariff review. The forecast granted in 2023 exceeded the amounts actually accrued, and the adjustment made in 2024 surpassed the subsidy amount for that year, resulting in a revenue reversal and a lower figure for the first half of 2024. Additionally, the variation is due to the increase in discounts granted by Cemig, primarily to the “Incentivized Source Load” and “GD II” consumer classes.

| (3) | With Provisional Measure No. 1,212/2024, the funds from Eletrobras' contribution to the CDE (Energy Development Account) were advanced to settle the Covid Account and the Water Scarcity Account, resulting in a reduction of the direct contributions to the CDE in 2025 compared to 2024.

| (4) | This subsidy is affected by the activation of the Yellow and Red tariff flags. During the first half of 2025, the 'Red Flag – Level 1' was triggered in May and June. In contrast, during the first half of 2024, no tariff flags were activated, with the Green Flag remaining in effect throughout the period.

| (5) | The amount allocated to this subsidy is defined in the Ratifying Resolution issued for each tariff adjustment. The variation is mainly due to the increase in the discounts granted by Cemig, particularly to the 'Encouraged Source Load' and 'Distributed Generation II' customer classes.

65 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| d) | Taxes and regulatory charges levied on operating revenue

| Consolidated | Parent Company
Jan to jun/2025 | Jan to jun/2024 | Jan to jun/2025 | Jan to jun/2024
Taxes on revenue |  |  |  |
ICMS | 2,868,373 | 2,765,535 | 125,191 | 123,352
Cofins | 1,485,146 | 1,518,795 | 165,326 | 163,323
PIS/Pasep | 322,428 | 329,722 | 35,893 | 35,458
Outros | 4,140 | 2,967 | - | -
| 4,680,087 | 4,617,019 | 326,410 | 322,133
Consumer charges |  |  |  |
Global Reversion Reserve – RGR | 3,648 | 4,535 | - | -
Energy Efficiency Program – PEE | 42,687 | 38,565 | - | -
Energy Development Account – CDE | 1,962,054 | 2,044,608 | - | -
Research and Development – R&D | 21,027 | 19,605 | - | -
National Fund for Scientific and Technological Development – FNDCT | 30,039 | 28,001 | - | -
Energy System Expansion Planning – EPE/MME | 15,019 | 14,005 | - | -
Consumer Charges – Proinfa | 31,135 | 29,192 | - | -
Electricity Services Regulatory Fee | 22,166 | 19,406 | - | -
Financial Compensation for the Use of Water Resources | 30,925 | 28,579 | - | -
CDE Allocation for R&D | 9,012 | 8,402 | - | -
CDE Allocation for Energy Efficiency Program | 13,480 | 12,178 | - | -
| 2,181,192 | 2,247,076 | - | -
Total | 6,861,279 | 6,864,095 | 326,410 | 322,133

| Consolidated | Parent Company
Apr to jun/2025 | Apr to Jun/2024 | Apr to jun/2025 | Apr to Jun/2024
Tributos sobre a receita |  |  |  |
ICMS | 1,441,309 | 1,390,110 | 66,127 | 63,529
Cofins | 772,184 | 763,497 | 86,355 | 78,819
PIS/Pasep | 167,642 | 165,745 | 18,748 | 17,112
Outros | 2,205 | 1,495 | - | -
| 2,383,340 | 2,320,847 | 171,230 | 159,460
Encargos do consumidor |  |  |  |
Reserva global de reversão – RGR | 1,836 | 1,693 | - | -
Programa de eficiência energética – PEE | 22,481 | 19,512 | - | -
Conta de desenvolvimento energético – CDE | 998,593 | 1,008,076 | - | -
Pesquisa e desenvolvimento – P&D | 10,808 | 9,776 | - | -
Fundo nacional de desenvolvimento científico e tecnológico – FNDCT | 15,440 | 13,959 | - | -
Pesquisa expansão sistema energético – EPE/MME | 7,720 | 6,984 | - | -
Encargos do consumidor – Proinfa | 12,550 | 14,924 | - | -
Taxa fiscalização serviços energia elétrica | 11,193 | 9,902 | - | -
Compensação financeira utilização recursos hídricos | 14,815 | 11,950 | - | -
CDE sobre P&D | 4,632 | 4,177 | - | -
CDE sobre PEE | 7,099 | 6,161 | - | -
| 1,107,167 | 1,107,114 | - | -
Total | 3,490,507 | 3,427,961 | 171,230 | 159,460

66 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 22. | COSTS, EXPENSES AND OTHER REVENUE

The costs and expenses of the Company and its subsidiaries are as follows:

a) Cost of energy and gas

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Energy purchased for resale |  |  |  |
Supply from Itaipu Binacional | 629,237 | 572,982 | - | -
Physical guarantee quota contracts | 403,794 | 434,806 | - | -
Quotas for Angra I and II nuclear plants | 166,892 | 188,792 | - | -
Spot market (1) | 808,634 | 196,642 | 193,469 | -
Proinfa Program | 269,677 | 229,194 | - | -
‘Bilateral’ contracts | 254,415 | 250,248 | - | -
Energy acquired in Regulated Market auctions | 2,009,743 | 2,036,670 | - | -
Energy acquired in the Free Market | 3,168,474 | 2,509,519 | 1,872,327 | 1,728,568
Distributed generation (‘Geração distribuída’) (2) | 1,796,942 | 1,361,738 | - | -
PIS/Pasep and Cofins credits | (693,879) | (576,732) | (191,086) | (159,893)
| 8,813,929 | 7,203,859 | 1,874,710 | 1,568,675
Basic Network Usage Charges |  |  |  |
Transmission charges - Basic Grid | 1,704,896 | 1,816,815 | (63) | 63
Distribution charges | 25,328 | 32,884 | - | -
PIS/Pasep and Cofins credits | (186,243) | (189,341) | 6 | (6)
| 1,543,981 | 1,660,358 | (57) | 57
Gas purchased for resale (3) | 973,949 | 1,019,005 | - | -
Total costs of energy and gas | 11,331,859 | 9,883,222 | 1,874,653 | 1,568,732

| (1) | The variation is mainly associated with the increase in the PLD (Settlement Price for the Difference Market) in the Southeast/Central-West submarket, which was not offset by the PLD in the Northeast and North submarkets, as these remained at their minimum value for most of the period. In the trading segment, the Company’s exposure to price differences between submarkets negatively impacted results. Further details are provided in the “Trading Segment Performance” section. In the distribution segment, the negative effect of this exposure is mitigated by the CVA (Parcel A Cost Variation Compensation Account) mechanism, which is offset in the subsequent tariff adjustment. Additionally, the unfavorable hydrological scenario observed in the second quarter of 2025 resulted in low performance under the MRE (Energy Reallocation Mechanism), leading to an increase in pass-through amounts related to Hydrological Risk.

| (2) | The increase of 31.96% is mainly due to the increase in the number of generating units (336,669 as of June 30, 2025, compared to 273,174 as of June 30, 2024) and the volume of energy injected into the grid (3,673 GWh in the second half of 2025 compared to 2,925 GWh in the second half of 2024).

| (3) | The price of the gas molecule purchased by Gasmig is adjusted based on fluctuations in Brent crude oil prices and the exchange rate.

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Energy purchased for resale |  |  |  |
Supply from Itaipu Binacional | 322,822 | 304,286 | - | -
Physical guarantee quota contracts | 200,845 | 214,415 | - | -
Quotas for Angra I and II nuclear plants | 83,446 | 94,393 | - | -
Spot market (1) | 489,394 | 132,881 | 53,176 | (9,084)
Proinfa Program | 134,838 | 116,081 | - | -
‘Bilateral’ contracts | 132,433 | 122,958 | - | -
Energy acquired in Regulated Market auctions | 1,046,488 | 1,035,152 | - | -
Energy acquired in the Free Market | 1,656,838 | 1,269,988 | 992,210 | 861,401
Distributed generation (‘Geração distribuída’) (2) | 846,075 | 697,974 | - | -
PIS/Pasep and Cofins credits | (365,876) | (294,901) | (96,698) | (78,840)
| 4,547,303 | 3,693,227 | 948,688 | 773,477
Basic Network Usage Charges |  |  |  |
Transmission charges - Basic Grid | 859,129 | 892,868 | - | -
Distribution charges | 11,541 | 17,849 | - | -
PIS/Pasep and Cofins credits | (93,955) | (93,581) | - | -
| 776,715 | 817,136 | - | -
Gas purchased for resale (3) | 485,097 | 508,828 | - | -
Total costs of energy and gas | 5,809,115 | 5,019,191 | 948,688 | 773,477

| (1) | The variation is mainly associated with the increase in the PLD (Settlement Price for the Difference Market) in the Southeast/Central-West submarket, which was not offset by the PLD in the Northeast and North submarkets, as these remained at their minimum value for most of the period. In the trading segment, the Company’s exposure to price differences between submarkets negatively impacted results. Further details are provided in the “Trading Segment Performance” section. In the distribution segment, the negative effect of this exposure is mitigated by the CVA (Parcel A Cost Variation Compensation Account) mechanism, which is offset in the subsequent tariff adjustment. Additionally, the unfavorable hydrological scenario observed in the second quarter of 2025 resulted in low performance under the MRE (Energy Reallocation Mechanism), leading to an increase in pass-through amounts related to Hydrological Risk.

| (2) | The increase of 21.22% is mainly due to the increase in the number of generating units (336,669 as of June 30, 2025, compared to 273,174 as of June 30, 2024) and the volume of energy injected into the grid (1,797 GWh in the second quarter of 2025 compared to 1,487 GWh in the second quarter of 2024).

| (3) | The price of the gas molecule purchased by Gasmig is adjusted based on fluctuations in Brent crude oil prices and the exchange rate.

67 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

b) Infrastructure and construction cost

| Consolidated
Jan to Jun/2025 | Jan to Jun/2024
Personnel and managers | 65,853 | 88,333
Materials | 1,260,531 | 971,506
Outsourced services | 1,187,373 | 875,840
Acquisition of easements | 96,127 | 57,445
Others | 55,351 | 154,790
Total | 2,665,235 | 2,147,914

| Consolidated
Apr to Jun/2025 | Apr to Jun/2024
Personnel and managers | 30,345 | 44,340
Materials | 722,993 | 547,626
Outsourced services | 632,492 | 499,189
Acquisition of easements | 51,796 | 36,643
Others | 25,745 | 99,135
Total | 1,463,371 | 1,226,933

There was an increase in the number and volume of works being undertaken, mainly in distribution networks, under the Distribution Development Plan (‘Plano de Desenvolvimento da Distribuição’ - PDD), and consequently higher Construction costs in Cemig D than in the previous year.

c) Other costs and expenses

Consolidated | Total Jan to Jun/2025 | Total Jan to Jun/2024
| Operating costs | ECL | General and administrative expenses | Other expenses
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Personnel | 563,211 | 549,537 | - | - | 171,469 | 191,305 | - | - | 734,680 | 740,842
Employees’ and managers’ income sharing | 65,735 | - | - | - | 23,574 | - | - | 82,419 | 89,309 | 82,419
Post-employment benefits (reversal) (note 18) | (31,963) | - | - | - | (10,530) | - | 254,222 | 240,676 | 211,729 | 240,676
Materials | 59,703 | 54,868 | - | - | 5,644 | 7,693 | - | - | 65,347 | 62,561
Outsourced services (C.1) | 914,820 | 903,071 | - | - | 126,901 | 123,542 | - | - | 1,041,721 | 1,026,613
Depreciation and amortization | 719,582 | 655,677 | - | - | 12,658 | 10,644 | - | - | 732,240 | 666,321
Provisions (reversal) | 220,220 | (357,518) | - | - | - | - | 31,452 | 30,472 | 251,672 | (327,046)
Impairment | - | - | - | - | - | - | - | 27,396 | - | 27,396
Expected credit losses (note 7) | - | - | 53,726 | 153,153 | - | - | - | - | 53,726 | 153,153
Expected loss on other receivables | - | - | - | - | - | - | 37,654 | 37,039 | 37,654 | 37,039
RBSE Remeasurement (Note 10) | - | - | - | - | - | - | 198,895 | - | 198,895 | -
Other costs and expenses (C.2) | 131,325 | 127,940 | - | - | 41,853 | 42,262 | 58,371 | 39,251 | 231,549 | 209,453
Total | 2,642,633 | 1,933,575 | 53,726 | 153,153 | 371,569 | 375,446 | 580,594 | 457,253 | 3,648,522 | 2,919,427

| (1) | In the first half of 2024, the Company recognized a reversal of tax contingency provisions in the amount of R$578,740, resulting from a favorable first-instance court decision that ordered the cancellation of the tax assessment and the termination of the enforcement proceeding related to social security contributions on Profit Sharing (PLR).

| (2) | This variation results from the change, effective August 2024, in the criteria for full loss recognition, extending the period from 24 to 36 months for regular consumption customers, and from 12 to 18 months for irregular consumption customers. The adjustment aims to improve the estimation of credit risk exposure for Cemig D’s captive customers. The impact of this change is recognized over a 12-month period, affecting the second quarter of 2025.

68 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Consolidated | Total Apr to Jun/2025 | Total Apr to Jun/2024
| Operating costs | ECL | General and administrative expenses | Other expenses
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Personnel | 302,972 | 307,042 | - | - | 85,543 | 109,742 | (126) | - | 388,389 | 416,784
Employees’ and managers’ income sharing | 33,437 | - | - | - | 12,587 | - | - | 43,187 | 46,024 | 43,187
Post-employment benefits (note 1) | (13,916) | - | - | - | (4,595) | - | 127,835 | 98,391 | 109,324 | 98,391
Materials | 32,398 | 29,239 | - | - | (5,744) | 4,352 | - | - | 26,654 | 33,591
Outsourced services (C.1) | 465,048 | 441,855 | - | - | 61,959 | 65,851 | - | - | 527,007 | 507,706
Depreciation and amortization (2) | 361,878 | 332,210 | - | - | 6,515 | 5,569 | - | - | 368,393 | 337,779
Provisions | 95,484 | (476,347) | - | - | - | - | 18,142 | 22,163 | 113,626 | (454,184)
Impairment | - |  | - | - | - | - | - | 4,438 | - | 4,438
Expected credit losses (note 7) | - |  | 3,098 | 77,300 | - | - | - | - | 3,098 | 77,300
Expected loss on other receivables | - | - | - | - | - | - | 30,126 | 24,592 | 30,126 | 24,592
RBSE Remeasurement (Note 10) | - |  | - | - | - | - | 198,895 | - | 198,895 | -
Other costs and expenses (C.2) | 86,375 | 52,181 | - | - | 21,337 | 20,186 | 30,929 | 33,823 | 138,641 | 106,190
Total | 1,363,676 | 686,180 | 3,098 | 77,300 | 177,602 | 205,700 | 405,801 | 226,594 | 1,950,177 | 1,195,774

| (1) | In the second quarter of 2024, the Company recognized a reversal of tax contingency provisions in the amount of R$578,740, resulting from a favorable first-instance court decision that ordered the cancellation of the tax assessment and the termination of the enforcement proceeding related to social security contributions on Profit Sharing (PLR).

| (2) | This variation results from a change, effective August 2024, in the criteria for full loss recognition. The recognition period was extended from 24 to 36 months for regular consumption customers, and from 12 to 18 months for irregular consumption customers, in order to achieve a more accurate estimate of credit risk exposure for Cemig D’s captive customers. This change is reflected over a 12-month period, impacting the second quarter of 2025.

Parent Company | Total Jan to Jun/2025 | Total Jan to Jun/2024
| Operating costs | ECL | General and administrative expenses | Other expenses
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Personnel | 13,263 | 11,940 | - | - | 12,501 | 12,801 | - | - | 25,764 | 24,741
Employees’ and managers’ income sharing | - | - | - | - | 11,525 | - | - | 8,350 | 11,525 | 8,350
Post-employment benefits | (1,233) | - | - | - | 450 | - | 32,711 | 30,688 | 31,928 | 30,688
Materials | - | - | - | - | 80 | 65 | - | - | 80 | 65
Outsourced services (C.1) | - | - | - | - | 11,991 | 8,019 | - | - | 11,991 | 8,019
Depreciation and amortization | - | - | - | - | 124 | 71 | - | - | 124 | 71
Provisions | - | - | - | - | - | - | 31,452 | 30,471 | 31,452 | 30,471
Impairment | - | - | - | - | - | - | - | 34 | - | 34
Expected credit losses (note 7) | - | - | (87) | 9,309 | - | - | - | - | (87) | 9,309
Other costs and expenses (C.2) | - | - | - | - | - | - | 9,731 | 7,972 | 9,731 | 7,972
Total | 12,030 | 11,940 | (87) | 9,309 | 36,671 | 20,956 | 73,894 | 77,515 | 122,508 | 119,720

Parent Company | Total Apr to Jun/2025 | Total Apr to Jun/2024
| Operating costs | ECL | General and administrative expenses | Other expenses
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Personnel | 6,752 | 5,990 | - | - | (8) | 1,179 | 5,234 | - | 11,978 | 7,169
Employees’ and managers’ income sharing | - | - | - | - | 6,338 | - | - | 3,264 | 6,338 | 3,264
Post-employment benefits | (885) | - | - | - | 522 | - | 16,389 | 13,949 | 16,026 | 13,949
Materials | - | - | - | - | 59 | 20 | - | - | 59 | 20
Outsourced services (C.1) | - | - | - | - | 7,093 | 4,199 | - | - | 7,093 | 4,199
Depreciation and amortization | - | - | - | - | 60 | 39 | - | - | 60 | 39
Provisions | - | - | - | - | - | - | 18,142 | 22,162 | 18,142 | 22,162
Impairment | - | - | - | - | - | - | - | (48) | - | (48)
Expected credit losses | - | - | (28) | 3,315 | - | - | - | - | (28) | 3,315
Other costs and expenses (C.2) | - | - | - | - | - | - | 3,998 | 9,568 | 3,998 | 9,568
Total | 5,867 | 5,990 | (28) | 3,315 | 14,064 | 5,437 | 43,763 | 48,895 | 63,666 | 63,637

69 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

C.1) Outsourced services

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Meter reading and bill delivery | 81,466 | 80,564 | - | -
Communication | 89,149 | 89,488 | 118 | 70
Maintenance and conservation of electrical facilities and equipment | 357,158 | 399,359 | 7 | 11
Building conservation and cleaning | 43,954 | 45,829 | 188 | 194
Security services | 12,033 | 10,633 | - | -
Consultancy | 9,511 | 6,023 | 1,686 | 1,361
Information technology | 103,535 | 94,812 | 1,673 | 1,227
Disconnection and reconnection | 32,925 | 32,584 | - | -
Legal services and procedural costs | 16,785 | 16,664 | 3,593 | 1,000
Environment services | 48,410 | 36,888 | - | -
Cleaning of power line pathways | 74,922 | 70,010 | - | -
Copying and legal publications | 8,826 | 8,823 | 86 | -
Inspeção de unidades consumidoras | 20,389 | 21,674 | - | -
Contracted labor | 31,817 | 23,703 | 1,391 | 196
Other expenses | 110,841 | 89,559 | 3,249 | 3,960
Total | 1,041,721 | 1,026,613 | 11,991 | 8,019

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Meter reading and bill delivery | 41,622 | 40,373 | - | -
Communication | 46,372 | 44,345 | 92 | 34
Maintenance and conservation of electrical facilities and equipment | 181,818 | 189,004 | 7 | 6
Building conservation and cleaning | 23,332 | 22,288 | 89 | 96
Security services | 6,054 | 5,390 | - | -
Consultancy | 6,630 | 3,254 | 968 | 563
Information technology | 34,901 | 36,105 | 655 | 533
Disconnection and reconnection | 18,313 | 15,422 | - | -
Legal services and procedural costs | 11,220 | 10,947 | 3,065 | 801
Environment services | 25,956 | 20,718 | - | -
Cleaning of power line pathways | 41,058 | 38,292 | - | -
Copying and legal publications | 4,369 | 4,266 | 37 | -
Inspeção de unidades consumidoras | 10,793 | 12,666 | - | -
Contracted labor | 17,471 | 12,246 | 1,015 | 159
Other expenses | 57,098 | 52,390 | 1,165 | 2,007
Total | 527,007 | 507,706 | 7,093 | 4,199

C.2) Other costs and expenses, net

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Leasing and rentals | 5,053 | 2,121 | 10 | 4
Advertising | 10,513 | 7,871 | 4,669 | 2,157
Own consumption | 14,802 | 14,142 | - | -
Subsidies and donations | 13,058 | 16,068 | 1,000 | 914
Insurance | 5,569 | 3,573 | 452 | 78
CCEE annual charge | 4,991 | 4,418 | 1,365 | 1,143
Forluz – Administrative running cost | 20,680 | 20,055 | 990 | 961
Collecting agents | 28,347 | 29,309 | - | -
Net loss (gain) on deactivation and disposal of assets | 114,128 | 73,024 | - | -
Liabilities arising from investment contracts | - | 1,858 | - | -
Taxes | 7,375 | 6,637 | 236 | 259
Other (reversals) | 7,033 | 30,377 | 1,009 | 2,456
Total | 231.549 | 209.453 | 9.731 | 7.972

70 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
Leasing and rentals | 5,053 | 1,784 | 10 | 4
Advertising | 6,282 | 5,938 | 2,318 | 1,873
Own consumption | 7,317 | 7,338 | - | -
Subsidies and donations | 4,282 | 8,150 | - | -
Insurance | 2,754 | (1,237) | 210 | (719)
CCEE annual charge | 2,443 | 2,274 | 659 | 651
Forluz – Administrative running cost | 10,679 | 9,967 | 509 | 476
Collecting agents | 14,106 | 14,580 | - | -
Net loss (gain) on deactivation and disposal of assets | 80,511 | 30,340 | - | -
Taxes | 2,466 | 1,820 | 20 | 97
Other (reversals) | 2,748 | 25,236 | 272 | 7,186
Total | 138,641 | 106,190 | 3,998 | 9,568

Scheduled Voluntary Termination Program (PDVP)

In April 2025, the Company approved the 2025 Scheduled Voluntary Termination Program (PDVP), with the employee enrollment period set from May 5 to May 30, 2025. A total of 118 employees joined the program. The initiative included the payment of legally mandated severance under the 'termination without cause' category, along with an additional compensation based on length of service. The total cost of the program amounted to R$25,391 and was recognized in the income statement under personnel expenses. Terminations began in June and are expected to be completed by October 2025.

d) other revenue

| Consolidated
Jan to Jun/2025 | Jan to Jun/2024
Gains arising from the sale of PP&E (1) | - | 42,989

| (1) | Refers to the capital gain recognized from the disposal of 15 SHPPs/CGHs (Small Hydropower Plants) owned by the Company. The divestment process was completed in February 2024. Further details on this transaction are disclosed in Note 30 to the Annual Financial Statements for the fiscal year 2024.

| 23. | FINANCE INCOME AND EXPENSES

| Consolidated | Parent company
Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
FINANCE INCOME |  |  |  |
Income from financial investments | 285,489 | 181,811 | 34,772 | 43,332
Interest on sale of energy | 155,716 | 149,088 | 2,659 | 2,802
Foreign exchange variations - Itaipu Binacional | 8,535 | - | - | -
Interest | 24,563 | 46,902 | 7,595 | 13,051
Interest - CVA | 31,119 | - | - | -
Gain with financial instruments – Swap (1) | - | 112,050 | - | -
Interests of escrow deposits | 41,271 | 33,317 | 8,063 | 5,251
PIS/Pasep and Cofins charged on finance income (2) | (125,116) | (90,059) | (96,846) | (68,299)
Prepayments rents | 1,536 | 2,456 | 4 | -
Borrowing costs paid by related parties | - | - | 1,414 | 10,925
Monetary updating on PIS/Pasep and Cofins taxes credits over ICMS | - | 391,495 | 11,181 | 18,232
IRPJ credit update on Workers' Food Program | 3,247 | 50,191 | 423 | -
Other financial income | 59,082 | 49,757 | 1,259 | 1,667
| 485,442 | 927,008 | (29,476) | 26,961
FINANCE EXPENSES |  |  |  |
Interest on debentures (Note 17) | (643,438) | (459,398) | - | -
Amortization of transaction cost | (12,431) | (8,392) | - | -
Foreign exchange variations – Loans (1) | - | (273,485) | - | -
Foreign exchange variations - Itaipu Binacional | - | (10,906) | - | -
Interest – debentures | (186,855) | (107,802) | - | -
Interest - CVA | - | (928) | - | -
Charges and monetary updating on post-employment obligations | - | (3,161) | - | (156)
Update on PIS/Pasep and Cofins Refunds to Consumers (2) | (1,985) | - | - | -
Interest on leases | (12,184) | (14,983) | (81) | (111)
Financial expenses R&D and PEE | (19,587) | (14,138) | - | -
Estimated Update of Distributed Generation Credits | (75,261) | (37,970) | - | -
Other financial expenses | (46,292) | (58,712) | (778) | (39)
| (998,033) | (989,875) | (859) | (306)
NET FINANCE INCOME (EXPENSES) | (512,591) | (62,867) | (30,335) | 26,655

| (1) | In December 2024, Cemig GT completed the settlement of its Eurobonds. As a result, as of June 30, 2025, the Company no longer holds any derivative financial instruments or active hedge operations. Further details can be found in Notes 20 and 30 to the 2024 Financial Statements.

| (2) | PIS/Pasep and Cofins expenses are levied on financial income and interest on equity, which causes the total financial income to be negative in the parent company.

71 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| Consolidated | Parent company
Apr to Jun/2025 | Apr to Jun/2024 | Apr to Jun/2025 | Apr to Jun/2024
FINANCE INCOME |  |  |  |
Income from financial investments | 201,623 | 117,043 | 22,955 | 32,393
Interest on sale of energy | 81,432 | 73,661 | 1,395 | 1,194
Foreign exchange variations - Itaipu Binacional | 2,326 | - | - | -
Interest | 12,156 | 8,101 | 3,941 | 42
Interest - CVA | 13,346 | - | - | -
Gain with financial instruments – Swap (1) | - | 70,018 | - | -
Interests of escrow deposits | 20,203 | 15,307 | 4,853 | 2,148
PIS/Pasep and Cofins charged on finance income (2) | (72,060) | (48,924) | (53,445) | (36,334)
Borrowing costs paid by related parties | 933 | 1,278 | 1 | -
Monetary updating on PIS/Pasep and Cofins taxes credits over ICMS | 4,345 | 406,414 | 5,802 | 13,348
IRPJ credit update on Workers' Food Program | 2,185 | 50,191 | 280 | -
Other financial income | 35,955 | 32,385 | 640 | 1,094
| 302,444 | 725,474 | (13,578) | 13,885
FINANCE EXPENSES |  |  |  |
Interest on debentures (Note 17) | (383,331) | (240,729) | - | -
Amortization of transaction cost | (6,878) | (4,603) | - | -
Foreign exchange variations – Loans (1) | - | (214,451) | - | -
Foreign exchange variations - Itaipu Binacional | - | (8,561) | - | -
Interest – debentures | (61,762) | (52,877) | - | -
Interest - CVA | - | (2,720) | - | -
Charges and monetary updating on post-employment obligations | - | (717) | - | (36)
Interest on leases | (6,210) | (6,102) | (41) | (41)
Financial expenses R&D and PEE | (10,364) | (6,888) | - | -
Estimated Update of Distributed Generation Credits | (75,261) | (37,970) | - | -
Other financial expenses | (21,598) | (31,737) | (40) | (19)
| (565,404) | (607,355) | (81) | (96)
NET FINANCE INCOME (EXPENSES) | (262,960) | 118,119 | (13,659) | 13,789

(1) |  | In December 2024, Cemig GT completed the settlement of its Eurobonds. As a result, as of June 30, 2025, the Company no longer holds any derivative financial instruments or active hedge operations. Further details can be found in Notes 20 and 30 to the 2024 Financial Statements.

(2) |  | PIS/Pasep and Cofins expenses are levied on financial income and interest on equity, which causes the total financial income to be negative in the parent company.

72 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 24. | RELATED PARTY TRANSACTIONS

The relationships between Cemig and its investees are described in the investment note (No. 11). The main consolidated balances and transactions, as well as the main conditions relating to the Company's business with related parties, are shown below:

Transactions with energy

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Norte Energia |  |  | 33,240 | 32,901 | - | - | (146,366) | (140,456)
Paracambi |  |  | 2,199 | 3,065 | - | - | (13,271) | (15,036)
Hidrelétrica Pipoca |  |  | - | 4,440 | - | - | (1,893) | (19,088)

The sale and purchase of electricity between generators and distributors are carried out through auctions in the regulated contracting environment organized by the Federal Government. In the free contracting environment, in turn, they are carried out by means of auctions or direct contracting, according to the applicable legislation. Electricity transport operations, on the other hand, are carried out by the transmitters and result from the centralized operation of the National Interconnected System by the National System Operator (ONS).

Charges

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Connection charges |  |  |  |  |  |  |  |
Taesa | - | - | 649 | 107 | - | - | (70,876) | (70,975)
Transmission charges |  |  |  |  |  |  |  |
Norte Energia | 9,806 | 8,726 | - | - | 17,400 | 16,040 | - | -
Taesa | - | - | 7,586 | 11,063 | - | - | (645) | (10,377)

Connection charges are financial amounts set and approved by Aneel for use of connection facilities and/or connection points in the transmission system, payable by the accessing party to the connected agent.

Transmission charges are monthly amounts payable by users to holders of transmission concessions for the provision of transmission services, calculated according to the tariffs and the contracted amounts of use of the transmission system, in accordance with regulations set by Aneel.

Customers and traders

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Governo do Estado de Minas Gerais | 10,730 | 10,769 | - | - | 55,564 | 113,201 | - | -

73 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The “Consumers and Traders” balance that the Company holds with the controlling entity refers to sale of electricity to the government of Minas Gerais State – the price of the supply is that decided by Aneel through a Resolution which decides the Cemig D annual tariff adjustment.

Provision of services

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Cachoeirão | 101 | - | - | - | 139 | - | - | -
Guanhães | 722 | - | - | - | 1,212 | - | - | -
Taesa | 127 | 579 | - | - | 962 | 775 | - | -

The balances for services rendered refer to contracts for the provision of operation and maintenance services for power plants, transmission networks and distribution networks.

Accounts receivable – ‘AFAC’

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Governo do Estado de Minas Gerais | 13,366 | 13,366 | - | - | - | - | - | -

This refers to the recalculation of the monetary correction of amounts related to AFAC returned to the State of Minas Gerais. These receivables are guaranteed by the retention of dividends or interest on equity distributed to the State, in proportion to its participation, while the delay and/or default persists.

Agreements and legal proceedings

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Guanhães Energia | - | - | 13.497 | 16.872 | - | - | - | -
Cemig D | - | - | 7.944 | 9.931 | - | - | - | -
Governo do Estado de Minas Gerais | 21.621 | 27.027 | - | - | - | - | - | -

Interest on Equity and dividends

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Taesa | 59.214 | 111.317 | - | - | - | - | - | -

The table above indicates the asset position of dividends receivable from the investees presented in “Other” in the “Dividends receivable” table.

FIC Pampulha

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Current |  |  |  |  |  |  |  |
Cash and cash equivalents | 383 | 159,216 | - | - | - | - | - | -
Marketable securities | 1,138,122 | 356,888 | - | - | 46,127 | 43,345 | - | -
Non-current |  |  |  |  |  |  |  |
Marketable securities | 55,557 | 134,606 | - | - | - | - | - | -

74 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Cemig and its subsidiaries and jointly controlled entities invest part of their financial resources in an investment fund which has the characteristics of fixed income and obeys the Company’s cash investment policy. The amounts invested by the fund are reported as cash and cash equivalent or marketable securities line in current and non-current assets.

The funds applied are allocated only in public and private fixed income securities, subject only to credit risk, with various maturity periods, obeying the unit holders’ cash flow needs.

Leasing

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
Current |  |  |  |  |  |  |  |
Leasing | - | - | 18,549 | 18,544 | - | - | (10,913) | (14,148)
Non-current |  |  |  |  |  |  |  |
Leasing | 175,549 | 180,248 | 192,038 | 195,122 | - | - | - | -

This is a contract with Fundação Forluminas de Seguridade Social (Forluz), the closed private pension fund (Entidade Fechada de Previdência Complementar – EFPC) of employees of the Cemig Group, the owner of the building.

Post-employment benefit

COMPANY | ASSETS | LIABILTIES | REVENUES | EXPENSES
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | Jan to Jun/2025 | Jan to Jun/2024 | Jan to Jun/2025 | Jan to Jun/2024
FORLUZ |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |
Post-employment obligations (1) | - | - | 41,856 | 52,889 | - | - | (105,047) | (106,977)
Supplementary pension contributions - Defined contribution plan (2) | - | - | - | - | - | - | (40,120) | (41,576)
Administrative running costs (3) | - | - | - | - | - | - | (21,604) | (19,954)
Non-current |  |  |  |  |  |  |  |
Post-employment obligations (1) | - | - | 1,683,349 | 1,648,335 | - | - | - | -
Cemig Saúde |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |
Health Plan and Dental Plan (4) | - | - | 204,736 | 208,173 | - | - | (155,540) | (91,240)
Non-current |  |  |  |  |  |  |  |
Health Plan and Dental Plan (4) | - | - | 2,406,246 | 2,396,109 | - | - | - | -

The Company has contractual obligations to a group of retired former employees in which it is responsible for ensuring funds for the cost of a supplementary pension plan, called Forluz, and for the running costs of a health plan, called Cemig Saúde. The main conditions related to the post-employment benefits are as follows:

| (1) | Forluz's contracts are adjusted by the Broad National Consumer Price Index - IPCA of the Brazilian Institute of Geography and Statistics - IBGE, plus interest of 6% per year and will be amortized until 2031;

| (2) | Company's contributions to the Pension Fund regarding the employees participating in the Mixed Plan and calculated over monthly remunerations in conformity with the Fund's regulation;

| (3) | Funds for the annual administrative funding of the Pension Fund in accordance with the specific legislation for the sector. The amounts are estimated as a percentage of the Company's payroll;

| (4) | Post-employment obligations related to the employees' health and dental plan.

Details regarding post-employment benefits are provided in explanatory note 18.

75 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Dividends receivable

| Consolidated | Parent company
Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Cemig GT | - | - | 1,154,730 | 744,132
Cemig D | - | - | 784,914 | 1,117,129
Gasmig | - | - | 183,438 | 116,324
Taesa | 59,214 | 111,317 | 59,214 | 111,317
Cemig Sim | 193 | - | 6,855 |
Sete Lagoas | - | - | 3,517 |
Guanhães | 3,964 | - | - |
Others | 11 | 50 | 11 | 11
Total | 63,382 | 111,367 | 2,192,679 | 2,088,913

The table above shows the Company's active position with its investees in relation to the balances of dividends receivable. The subsidiaries that make up the amounts shown under “Other” are disclosed in the “Interest on equity and dividends” table.

Guarantees on debentures

Cemig has provided guarantees on debentures of the following related parties - not consolidated in the interim financial information because they relate to jointly controlled entities or affiliated companies:

Related party | Relationship | Type | Objective | Jun. 30, 2025 | Maturity
Norte Energia (NESA) (1) | Affiliated | Surety | Financing | 2,510,498 | 2042
Norte Energia S.A (NESA)/Light (2) | Affiliated | Counter-guarantee | Financing | 683,615 | 2042
Norte Energia (NESA) | Affiliated | Surety | Debentures | 77,255 | 2030
|  |  |  | 3,271,268 |

| (1) | Related to Norte Energia financing.

| (2) | Counter-guarantee to Light, related to execution of guarantees of the Norte Energia financing.

On June 30, 2025, Management believes that there is no need to recognize any provisions in the Company’s interim financial information for the purpose of meeting any obligations arising under these sureties and/or guarantees.

Remuneration of key management personnel

The total remuneration of key personnel, comprising the Executive Board, the Fiscal Council, the Audit Committee and the Board of Directors, are within the limits approved at a General Shareholders’ Meeting, and their effects on profit or loss are presented as follows:

| Jan to Jun/2025 | Jan to Jun/2024
Remuneration | 16.713 | 18.048
Income sharing | 3.024 | 33
Pension plans | 820 | 1.682
Health and dental plans | 116 | 138
Life insurance | 26 | 20
Total | 20.699 | 19.921

76 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 25. | FINANCIAL INSTRUMENTS AND RISK MANAGEMENT

| a) | Financial instruments classification and fair value

The main financial instruments, classified in accordance with the accounting principles, are as follows:

| Level | Jun. 30, 2025 | Dec. 31, 2024
Book value | Fair value (1) | Book value | Fair value (1)
Financial assets |  |  |  |  |
Amortized cost |  |  |  |  |
Marketable securities - Cash investments |  | 61,933 | 61,933 | 140,628 | 140,628
Customers and Traders; Concession holders (transmission service) |  | 5,928,539 | 5,928,539 | 5,850,173 | 5,850,173
Restricted cash |  | 45,106 | 45,106 | 235,206 | 235,206
Accounts receivable from the State of Minas Gerais (AFAC) |  | 34,987 | 34,987 | 40,393 | 40,393
Concession financial assets - CVA (Parcel ‘A’ Costs Variation Compensation) Account and Other financial components |  | 1,576,344 | 1,576,344 | 1,295,624 | 1,295,624
Reimbursement of Tariff Subsidies | 1 | 639,090 | 639,090 | 208,688 | 208,688
Concession grant fee - Generation concessions |  | 3,179,081 | 3,179,081 | 3,098,247 | 3,098,247
|  | 11,465,080 | 11,465,080 | 10,868,959 | 10,868,959
Fair value through income or loss |  |  |  |  |
Cash equivalents - Cash investments | 2 | 1,590,444 | 1,590,444 | 1,628,992 | 1,628,992
Marketable securities |  |  |  |  |
Bank certificates of deposit | 2 | 390,601 | 390,601 | - | -
Financial Notes - Banks | 2 | 278,546 | 278,546 | 279,469 | 279,469
Treasury Financial Notes (LFTs) | 1 | 546,429 | 546,429 | 72,422 | 72,422
|  | 2,806,020 | 2,806,020 | 1,980,883 | 1,980,883
Concession financial assets - Distribution infrastructure | 3 | 3,190,599 | 3,190,599 | 2,807,007 | 2,807,007
Reimbursements receivable - Generation | 3 | 928,664 | 928,664 | 870,535 | 870,535
|  | 6,925,283 | 6,925,283 | 5,658,425 | 5,658,425
|  | 18,390,363 | 18,390,363 | 16,527,384 | 16,527,384
Financial liabilities |  |  |  |  |
Amortized cost |  |  |  |  |
Debentures (2) |  | (15,263,937) | (15,160,888) | (12,279,300) | (11,934,066)
Deficit recovery plan of the pension fund – Forluz |  | (478,974) | (438,654) | (493,676) | (484,004)
Concessions payable |  | (27,921) | (27,921) | (27,428) | (27,428)
Suppliers |  | (3,080,310) | (3,080,310) | (2,951,571) | (2,951,571)
Leasing transactions (adjusted for remeasurements) |  | (426,292) | (426,292) | (429,200) | (429,200)
Concession financial liabilities |  | - | - | (16,470) | (16,470)
|  | (19,277,434) | (19,134,065) | (16,197,645) | (15,842,739)

| (1) | The book value represents the approximate fair value amount, except for debentures and pension fund deficit equalization in relation to the amounts as of June 30, 2025.

| (2) | The fair value presented is net of the transaction costs and anticipated resources presented in note 17.

At initial recognition the Company measures its financial assets and liabilities at fair value and classifies them according to the accounting standards currently in effect. Fair value is a measurement based on assumptions that market participants would use in pricing an asset or liability, assuming that market participants act in their economic best interest. The information applied in the fair value valuation techniques is classified in three levels of fair value hierarchy, as follows:

| § | Level 1. Active market: Quoted prices: A financial instrument is considered to be quoted in an active market if the prices quoted are promptly and regularly made available by an exchange or organized over-the-counter market, by operators, by brokers or by a market association, by entities whose purpose is to publish prices, or by regulatory agencies, and if those prices represent regular arm’s length market transactions made without any preference.

77 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| § | Level 2. No active market: Valuation technique: For an instrument that does not have an active market, fair value should be found by using a method of valuation/pricing. Criteria such as data on the current fair value of another instrument that is substantially similar, or discounted cash flow analysis or option pricing models, may be used. Level 2 is based on information that is observable, either directly or indirectly. The objective of the valuation technique is to establish what would be the transaction price on the measurement date in an arm’s-length transaction motivated by business model.

| § | Level 3. No active market: No observable inputs: Fair value is determined based on generally accepted valuation techniques, such as on discounted cash flow analysis or other valuation techniques, including non-observable data, such as the measurement at new replacement value (Valor novo de reposição, or VNR). Non-observable data should be used to measure fair value where significant observable data is not available, admitting situations in which there is little or no market activity at the measurement date. Non-observable data are developed using the best possible information available in the circumstances, which may include the entity’s own data.

The fair value hierarchy prioritizes information (inputs) from valuation techniques, and not the valuation techniques used for measurement of fair value. In some cases information is used from different hierarchy levels in measurement of fair value, and this is classified entirely in the same level of the fair value hierarchy applicable to the significant information of a lower level. For assets and liabilities that are recognized at fair value on a recurring basis, the Company determines whether transfers have occurred between levels in the hierarchy by re-assessing categorization.

Information on the (i) methodology for calculating the fair value of positions; and, (ii) financial instruments - derivatives, is disclosed in note 31 to the financial statements for the year ended December 31, 2024.

| b) | Financial risk management

Exchange rate risk

The Cemig D is exposed to the risk of appreciation in exchange rates, with effect on loans and financing, suppliers (energy purchased from Itaipu).

The impact of foreign exchange fluctuations related to the Itaipu power purchase agreement is mitigated by the account for compensation of variation of parcel A items (CVA).

78 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The net exposure to exchange rates is as follows:

Exposure to exchange rates | Jun. 30, 2025 | Dec. 31, 2024
Foreign currency | R$ | Foreign currency | R$
US dollar |  |  |  |
Suppliers (Itaipu Binacional) | (39,576) | (216,086) | (34,005) | (210,488)
| (39,576) | (216,086) | (34,005) | (210,488)
Net liabilities exposed |  | (216,086) |  | (210,488)

Sensitivity analysis

Based on finance information from its financial consultants, the Company estimates that in a probable scenario the variation of the dollar in relation to the Real on June 30, 2026 will be a appreciation of the dollar by %3.30 to R$5.64.

The Company has prepared a sensitivity analysis of the effects on the Company’s net income arising from depreciation of the Real exchange rate considering an adverse scenario in relation to the probable scenario.

Risk: foreign exchange rate exposure | Jun. 30, 2025 | Jun. 30, 2026
Amount Book value | ‘Probable’ scenario US$=R$5.64 | ‘Adverse’ scenario US$= R$6.78
US dollar |  |  |
Suppliers (Itaipu Binacional) | (216,086) | (223,210) | (268,327)
Liabilities exposed | (216,086) | (223,210) | (268,327)
Effect of exchange rate fluctuation on statements of income |  | (7,124) | (52,241)

Interest rate risk

The Company and its subsidiaries are exposed to the risk of decrease in Brazilian domestic interest rates. This risk arises from the effect of variations in Brazilian interest rates on net financial income comprised by financial revenues from cash investments made by the Company, and also to the financial assets related to the CVA and other financial components, net of the effects on financial expenses associated to loans, financings and debentures in Brazilian currency, and also sectorial financial liabilities.

Part of the debentures in Brazilian currency comprises financings obtained from various financial agents that specify interest rates taking into account basic interest rates, the risk premium compatible with the companies financed, their guarantees, and the sector in which they operate.

The Company does not contract derivative financial instruments for protection from this risk. Variations in interest rates are continually monitored with the aim of assessing the need for contracting of financial instruments that mitigate this risk.

79 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

This exposure occurs as a result of net assets indexed to variation in interest rates, as follows:

Risk: Exposure to domestic interest rate changes | Consolidated
Jun. 30, 2025 | Dec. 31, 2024
Assets |  |
Cash equivalents - Cash investments - CDI | 1,590,444 | 1,628,992
Marketable securities - CDI / Selic | 1,277,509 | 492,519
Indemnities receivable – Generation – CDI / Selic | 928,664 | 870,535
Restricted cash – CDI | 45,106 | 235,206
CVA and in tariffs – Selic (note 9.3) | 1,576,344 | 1,295,624
| 5,418,067 | 4,522,876
Liabilities |  |
Loans and debentures (Note 19) - CDI | (8,195,622) | (4,882,020)
CVA and in tariffs – Selic (note 9.3) | - | (16,470)
| (8,195,622) | (4,898,490)
Net assets (liabilities) exposed | (2,777,555) | (375,614)

Sensitivity analysis

Cemig and its subsidiaries estimate that in a probable scenario the Selic rate will be 13.75% and the TJLP rate will be 8.54% on June 30, 2026.

The analysis of the effects on results considering an adverse scenario in relation to the probable scenario, as shown in the table below.

Increase in Brazilian interest rates | Jun. 30, 2025 | Mar. 31, 2026
Amount Book value | ‘Probable’ scenario | ‘Adverse’ scenario
Selic 13.75% | Selic 16%
TJLP 8.54% | TJLP 8.96%
Assets |  |  |
Cash equivalents | 1,590,444 | 1,809,130 | 1,844,915
Marketable securities | 1,277,509 | 1,453,166 | 1,481,910
Indemnities receivable – Generation (note 9.1) | 928,664 | 1,056,355 | 998,685
Restricted cash | 45,106 | 51,308 | 52,323
CVA and Other financial components (note 9.3) | 1,576,344 | 1,793,091 | 1,828,559
| 5,418,067 | 6,163,050 | 6,206,392
Liabilities |  |  |
Debentures (note 17) | (8,195,622) | (9,322,520) | (9,506,922)
| (8,195,622) | (9,322,520) | (9,506,922)
Net assets exposed | (2,777,555) | (3,159,470) | (3,300,530)
Net effect of fluctuation in interest rates on statements of income |  | (381,915) | (522,975)

Increase in inflation risk

The Cemig and its subsidiaries are exposed to the risk of an increase in the inflation index. A portion of the debentures as well as the pension fund liabilities are adjusted using the IPCA (Expanded National Customer Price). The revenues are also adjusted using the IPCA and IGP-M index, mitigating part of the Company risk exposure.

80 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

This table presents the Company’s net exposure to inflation index:

Exposure to Brazilian domestic interest rates | Jun. 30, 2025 | Dec. 31, 2024
Assets |  |
Concession financial assets related to Distribution infrastructure - IPCA | 3,190,599 | 2,807,007
Concession Grant Fee - IPCA (Note 9.2) | 3,179,081 | 3,098,247
| 6,369,680 | 5,905,254
Liabilities |  |
Debentures - IPCA and IGP-DI (Note 17) | (7,259,101) | (7,547,202)
Deficit of pension plan (Forluz) | (478,974) | (493,676)
Leasing liabilities | (426,292) | (429,200)
| (8,164,367) | (8,470,078)
Net liabilities exposed | (1,794,687) | (2,564,824)

Sensitivity analysis

Due to having more liabilities than assets indexed to inflation indicators, the Company is exposed to an increase in these indicators, as represented in the adverse scenario.

Accordingly, based on the estimate that, in a probable scenario, the IPCA will be 4.92% and the IGP-M will be 5.03% as of June 30, 2026, the sensitivity analysis of the effects on results, considering an adverse scenario compared to the probable scenario, is as follows:

Consolidated | Jun. 30, 2025 | Jun. 30, 2026
‘Base scenario’ Amount Book value | ‘Probable scenario’ IPCA 4.92% IGPM 5.03 | ‘Adverse Scenario’ IPCA 7.54% IGPM 8.79%
Assets |  |  |
Concession financial assets related to Distribution infrastructure - IPCA | 3,095,447 | 3,247,743 | 3,328,844
Concession financial assets related to gas distribution infrastructure - IGPM | 95,152 | 99,938 | 103,516
Concession Grant Fee - IPCA (Note 9.2) | 3,179,081 | 3,335,492 | 3,418,784
| 6,369,680 | 6,683,173 | 6,851,144
Liabilities |  |  |
Debentures - IPCA and IGP-DI (Note 17) | (7,259,101) | (7,616,249) | (7,806,437)
Deficit of pension plan (Forluz) | (478,974) | (502,540) | (515,089)
Leasing liabilities | (426,292) | (447,266) | (458,434)
| (8,164,367) | (8,566,055) | (8,779,960)
Net liabilities exposed | (1,794,687) | (1,882,882) | (1,928,816)
Net effect of fluctuation in IPCA and IGP-M indexes on statements of income |  | (88,195) | (134,129)

Liquidity risk

Information on how the Company manages liquidity risk is disclosed in note 30 to the financial statements for the year ended December 31, 2024.

81 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The flow of payments of the Company and subsidiaries obligation to suppliers, debts with the pension fund, debentures, at floating and fixed rates, including future interest up to contractual maturity dates, is as follows:

Consolidated | Up to 1 month | 1 to 3 months | 3 months to 1 year | 1 to 5 years | Over 5 years | Total
Principal | Interest | Principal | Interest | Principal | Interest | Principal | Interest | Principal | Interest
Financial instruments at interest rates: |  |  |  |  |  |  |  |  |  |  |
- Floating rates* |  |  |  |  |  |  |  |  |  |  |
Debentures | - | - | 129,980 | 776,649 | 4,443,271 | 1,836,846 | 6,604,710 | 7,828,160 | 16,992,392 | 5,265,461 | 43,877,469
Onerous concessions | 372 | - | 733 | - | 3,153 | - | 14,125 | - | 15,430 | - | 33,813
Deficit of the pension plan (Forluz) | 4,997 | 2,338 | 10,110 | 4,622 | 47,809 | 20,008 | 322,500 | 73,950 | 163,130 | 9,836 | 659,300
| 5,369 | 2,338 | 140,823 | 781,271 | 4,494,233 | 1,856,854 | 6,941,335 | 7,902,110 | 17,170,952 | 5,275,297 | 44,570,582
- Fixed rate |  |  |  |  |  |  |  |  |  |  |
Suppliers | 2,797,654 | - | 279,817 | - | 2,839 | - | - | - | - | - | 3,080,310
Total | 2,803,023 | 2,338 | 420,640 | 781,271 | 4,497,072 | 1,856,854 | 6,941,335 | 7,902,110 | 17,170,952 | 5,275,297 | 47,650,892

Parent company | Up to 1 month | 1 to 3 months | 3 months to 1 year | 1 to 5 years | Over 5 years | Total
Principal | Interest | Principal | Interest | Principal | Interest | Principal | Interest | Principal | Interest
Financial instruments at interest rates: |  |  |  |  |  |  |  |  |  |  |
- Floating rates* |  |  |  |  |  |  |  |  |  |  |
Deficit of the pension plan (Forluz) | 246 | 115 | 497 | 227 | 2.352 | 984 | 15.867 | 3.638 | 8.026 | 484 | 32,436
- Fixed rate |  |  |  |  |  |  |  |  |  |  |
Suppliers | 370,204 | - | - | - | - | - | - | - | - | - | 370,204
Total | 370,450 | 115 | 497 | 227 | 2.352 | 984 | 15,867 | 3.638 | 8.026 | 484 | 402,640

(*) The lease payment flow is presented in note 14.

Risk of debt early maturity

The Company’s subsidiaries have loan contracts with restrictive covenants normally applicable to this type of transaction, related to compliance with a financial index. Non-compliance with these covenants could result in earlier maturity of debts. More details in Note 17.

Credit risk and other operating risks

The information on how the Company manages: (i) credit risk; (ii) the risk of over-contracting and under-contracting of supply; (iii) the risk to continuity of the concession; and (iv) hydrological risk is given in note 30 to the financial statements for the year ended December 31, 2024.

82 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

| 26. | SALE OF ASSETS

| a) | Process of sale of 15 PCHs/CGHs

On March 17, 2023, Cemig GT published a public auction notice for the divestiture of 15 SHPPs/MPPPs, including 12 assets owned by Cemig GT and 3 by Horizontes Energia S.A., a wholly-owned subsidiary of Cemig GT.

The asset divestiture process to Mang Participações e Agropecuária LTDA, the winning bidder in the auction held on August 10, 2023, was completed on February 29, 2024, after all precedent conditions of the Asset Purchase and Sale Agreement (APSA) were fulfilled. The amount received from the sale was R$101 million.

The purpose of the sale was to meet the guidelines of the company's strategic planning, which calls for the optimization of the asset portfolio, seeking to improve operational efficiency and the best allocation of capital.

In January 2025, a favorable ruling was issued in the public civil action filed against the public auction notice for the sale of the 15 SHPPs/Small Hydroelectric Plants.

In March 2025, a new ruling was issued declaring the previous decision null and void. As a result, the judgment that had upheld the public civil action against the auction notice was overturned. Cemig will continue to participate in the proceedings, which will lead to a new ruling on the merits.

As of the date of these Interim Financial Statements, there have been no impacts on the Company’s financial reporting.

| 27. | ASSETS CLASSIFIED AS HELD FOR SALE

The breakdown of assets classified as held for sale, measured at book value, is as follows:

| Jun. 30, 2025 | Dec. 31, 2024
Property, Plant and Equipment, Intangible Assets – Plants (b) | 19,353 | 20,347
Financial assets – Generation – Concession grant fee (b) | 37,761 | 36,517
| 57,114 | 56,864

Onerous transfer of 4 PCH/UHEs

On September 23, 2024, a public auction notice was published for the compensated transfer of the rights to operate electricity generation services for four HPPs/SHPPs, including one SHPP owned by Cemig GT and three HPPs owned by its wholly-owned subsidiaries: Cemig Geração Sul, Cemig Geração Leste, and Cemig Geração Oeste.

83 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

On December 5, 2024, Cemig GT held a public auction at B3, with the winning bid submitted by Âmbar Hidroenergia LTDA in the amount of R$52 million, representing a premium of 78.8% over the minimum price of R$29.1 million.

On February 21, 2025, Cemig GT and its wholly-owned subsidiaries—Cemig Geração Leste, Cemig Geração Oeste, and Cemig Geração Sul—signed the Asset Purchase and Sale Agreement (APSA) with Âmbar Hidroenergia LTDA, the winning bidder of the auction.

On May 23, 2025, the Court of Justice of the State of Minas Gerais suspended, until a final and unappealable ruling on the merits, the preliminary injunction issued in the Popular Action case against the auction notice and the contract related to the divestiture of these power plants, thereby reinstating the effects of the auction held on December 5, 2024.

The closing of the transaction is subject to the fulfillment of customary suspensive conditions, including obtaining consent from the Brazilian Electricity Regulatory Agency (Aneel) and the Administrative Council for Economic Defense (CADE).

This divestiture is in line with the guidelines of Cemig's Strategic Planning, which specifics optimization of the portfolio and a better allocation of capital.

| 28. | SUBSEQUENT EVENTS

CCEE Auction on Generation Scaling Factor (GSF) Credits

On August 1, 2025, Cemig GT, its wholly-owned subsidiary Cemig PCH S.A., and the Queimado Consortium—of which Cemig GT holds an 82.5% ownership interest—were declared winners in the auction conducted by the Electric Energy Trading Chamber (CCEE) for Generation Scaling Factor (GSF) credits.

The Queimado and Pai Joaquim hydropower plants will be granted a 7-year extension of their concession and authorization terms, while the Irapé plant will be entitled to a 3-year extension. The total disbursement of R$199,378 was made on August 13, 2025.

| Power Capacity (MW) | Firm Energy (MW) | Commercial Operation Start Date | Concession Term | Extension Period (years) | Premium (%) | Disbursement (BRL)
Irapé | 399 | 197 | 20/07/2006 | 19/09/2037 | 3 | 20 | 102,864
Pai Joaquim | 23 | 13,91 | 31/03/2004 | 15/10/2034 | 7 | 20 | 18,768
Queimado (82,5%) | 105 | 64,60 | 16/06/2004 | 27/06/2034 | 7 | 25 | 77,746
| 527 | 275.51 |  |  |  |  | 199,378

84 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Cash Flow Hedge Operation

On August 11, 2025, Cemig GT entered into a foreign loan agreement in the amount of USD 40 million under Law 4,131/62. Since the Company's functional currency (BRL) differs from the loan currency, a full cross-currency swap was contracted in accordance with its hedge policy, aiming to mitigate exposure to exchange rate fluctuations.

This derivative is being accounted for under hedge accounting treatment, with a notional amount of USD 40 million, equivalent to BRL 218,552.

Corporate Restructuring

On August 14, 2025, the Board of Directors authorized Cemig GT to acquire 100% of Cemig H’s equity interest in Cemig SIM’s share capital, at book value. As of June 30, 2025, Cemig SIM’s shareholders’ equity amounted to BRL 947,857.

Acquisition of 51% of the shares of Hidrelétrica Pipoca S.A.

On August 14, 2025, Cemig GT exercised its preemptive right to acquire 51% of the shares of Hidrelétrica Pipoca S.A. (Pipoca) held by Serena Geração S.A. (Serena Geração), a wholly-owned subsidiary of Serena Energia S.A. (Serena Energia).

This preemptive right, as governed by the Shareholders’ Agreement, arises from the transfer of indirect control of Pipoca, which will be triggered following the public auction of Serena Energia’s Tender Offer (TO). Therefore, the effectiveness of the transaction is subject to the completion of the TO, as well as the fulfillment of customary precedent conditions applicable to transactions of this nature.

The transaction value is BRL 36.33 million and will be adjusted by 100% of the CDI rate from May 15, 2025, until the date of Serena Energia’s TO auction.

The Pipoca SHPP, located in eastern Minas Gerais, has an installed capacity of 20 MW and firm energy of 11.9 average MW.

Currently, Cemig GT holds 49% of Pipoca’s shares, and the acquisition of the remaining 51% will result in full ownership of the asset.

Direct Action of Unconstitutionality No. 7,324 – Amounts to be Refunded to Consumers

On August 14, 2025, the Federal Supreme Court (STF) ruled on Direct Action of Unconstitutionality No. 7,324, which challenges the constitutionality of Law No. 14,385/2022. This law addresses the reimbursement of overpaid taxes by electricity distribution companies to consumers. The Company is awaiting the publication of the court ruling, at which point sufficient information will be available to assess the potential accounting, financial, and operational impacts resulting from the decision.

85 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

*********

Reynaldo Passanezi Filho
President

Andrea Marques de Almeida |  |  | Cristiana Maria Fortini Pinto e Silva
Vice President of Finance and Investor Relations |  |  | Vice President Legal
Marney Tadeu Antunes |  |  | Marco da Camino Ancona Lopez Soligo
Vice President of Distribution |  |  | Vice President of Participations and Vice President of Generation and Transmission (interim)
Sérgio Lopes Cabral |  |  | Luis Cláudio Correa Villani
Vice President of Trading |  |  | Vice President of Information Technology
Mário Lúcio Braga Controller |  |  | Bruno Philipe Silvestre Rocha Financial Accounting and Equity Interests Manager Accountant – CRC-MG-121.569/O-7

86 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

KPMG Auditores Independentes Ltda.

Rua Paraíba, 550 - 12º andar - Bairro Funcionários

30130-141 - Belo Horizonte/MG - Brasil

Caixa Postal 3310 - CEP 30130-970 - Belo Horizonte/MG - Brasil

Telefone +55 (31) 2128-5700

kpmg.com.br

Report on Review of interim Financial Information – ITR

(A free translation of the original report in Portuguese, as filed with the Brazilian Securities Commission – CVM, prepared in accordance with the Technical Pronouncement CPC 21 (R1) – Interim Financial Reporting and the international accounting standard IAS 34 – Interim Financial Reporting, as issued by the International Accounting Standards Board – IASB)

To the Shareholders, Board of Directors and Management

Companhia Energética de Minas Gerais - CEMIG

Belo Horizonte - MG

87 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Introduction

We have reviewed the individual and consolidated interim financial information of Companhia Energética de Minas Gerais – CEMIG (“Company”), included in the Quarterly Information Form (ITR) for the quarter ended June 30, 2025. This information comprises the balance sheet as of June 30, 2025, and the related statements of income and comprehensive income for the three- and six-month periods then ended, as well as the statements of changes in equity and cash flows for the six-month period then ended, including the accompanying explanatory notes.
The Company’s management is responsible for the preparation of the individual and consolidated interim financial information in accordance with CPC 21 (R1) and IAS 34 – Interim Financial Reporting, issued by the International Accounting Standards Board (IASB), as well as for the presentation of this information in accordance with the rules issued by the Brazilian Securities and Exchange Commission (CVM) applicable to the preparation of Quarterly Information (ITR). Our responsibility is to express a conclusion on this interim financial information based on our review.

Scope of the Review

We conducted our review in accordance with Brazilian and international standards on review engagements of interim financial information (NBC TR 2410 – Review of Interim Financial Information Performed by the Independent Auditor of the Entity and ISRE 2410 – Review of Interim Financial Information Performed by the Independent Auditor of the Entity, respectively). A review of interim financial information consists primarily of making inquiries of persons responsible for financial and accounting matters and applying analytical and other review procedures.
A review is substantially less in scope than an audit conducted in accordance with auditing standards and consequently does not enable us to obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express an audit opinion.

Conclusion on the Individual and Consolidated Interim Financial Information

Based on our review, we are not aware of any facts that would lead us to believe that the individual and consolidated interim financial information included in the aforementioned quarterly information was not prepared, in all material respects, in accordance with CPC 21 (R1) and IAS 34, applicable to the preparation of Quarterly Information (ITR), and presented in accordance with the rules issued by the Brazilian Securities and Exchange Commission.

Other Matters – Statements of Value Added

The aforementioned quarterly information includes the individual and consolidated Statements of Value Added (DVA) for the six-month period ended June 30, 2025, prepared under the responsibility of the Company’s management and presented as supplementary information for IAS 34 purposes. These statements were subjected to review procedures performed in conjunction with the review of the quarterly information, with the objective of determining whether they are reconciled with the interim financial information and accounting records, as applicable, and whether their form and content are in accordance with the criteria defined in Technical Pronouncement CPC 09 – Statement of Value Added. Based on our review, we are not aware of any facts that would lead us to believe that these Statements of Value Added were not prepared, in all material respects, in accordance with the criteria defined in that Pronouncement and consistently with the individual and consolidated interim financial information taken as a whole.

Belo Horizonte, August 14, 2025

KPMG Auditores Independentes Ltda.

CRC SP-014428/O-6 F-MG

Thiago Rodrigues de Oliveira

Accountant – CRC 1SP259468/O-7

88 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

OTHER INFORMATION THAT THE COMPANY BELIEVES TO BE MATERIAL

Corporate Governance

Cemig’s corporate governance is based on transparency, equity and accountability. The main characteristic of Cemig’s governance model is clear definition of the roles and responsibilities of the Board of Directors and Executive Board in formulating, approving and executing the policies and directives on how to conduct the Company’s business. The members of the Board of Directors, who are elected by the General Meeting of Stockholders, elect that Board’s chair and deputy chair and appoint the Executive Board (statutory executive officers) .

The focus of the Company’s governance has been a balance between the economic, financial and environmental aspects of Cemig, aiming to continue contributing to sustainable development, and continuous improvement of its relationship with stockholders, clients, employees, society and other stakeholders. Since 2001 Cemig has followed the Level I Corporate Governance Practices of the São Paulo stock exchange (B3).

Board of Directors

Each year, the members of the Board of Directors are subjected to independent individual and collective performance evaluations, and self-assessments, aiming to improve their functions. These are the minimum requirements:

| § | submission of a report on acts of management, as to lawfulness and efficacy of management action;

| § | contribution to the profit for the period; and

| § | achievement of the objectives specified in the Multi-year Business Plan and compliance with the Long-term Strategy and the Annual Budget.

It is the responsibility of the Audit Committee, independently, to verify compliance in the processes of evaluation of the members of the Board of Directors.

Membership, election and period of office

The Board of Directors shall be composed of 9 regular members, one of whom shall serve as the Chair. The members of the Board of Directors are elected for concurrent periods of office of 2 years, and may be dismissed at any time, by the General Meeting of Shareholders, Re-election for a maximum of 2 consecutive periods of office is permitted, subject to any requirements and prohibitions in applicable legislation and regulations.

89 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Of the nine members of the Board of Directors, seven have the characteristics of an Independent Member, under the criteria adopted by the Dow Jones Sustainability Index (DJSI), and nine have these characteristics according to the criteria of the Code of Best Corporate Governance Practices of the Brazilian Corporate Governance Institute (IBGC), as attested in the Board’s Statement of Independence.

The current term of office of the Board of Directors began at the Annual General Meeting (AGM) held on April 29, 2024, through the multiple voting mechanism. The term of office of the current members expires at the AGM to be held in 2026.

The composition of the Board of Directors shall be evaluated annually by the Board itself, with the aim of implementing gradual changes to enhance diversity, and targets may be established for this purpose.

A list with the names of the members of the Board of Directors, their responsibilities and resumes is on our website at: http://ri.cemig.com.br.

Meetings

The Board of Directors held 16 meetings in the first half of 2025, dealing with matters including strategic planning, projects, acquisition of new assets, and investments.

The Audit Committee

The Audit Committee is an independent, consultative body, permanently established, with its own budget allocation. Its objective is to provide advice and assistance to the Board of Directors, to which it reports. It also has the responsibility for such other activities as are attributed to it by legislation.

The Audit Committee has four members, the majority of them independent, nominated and elected by the Board of Directors in the second meeting after the Annual General Meeting for periods of office of three years, not to run concurrently. One re-election is permitted.

The responsibilities of the Audit Committee are available on our website: http://ri.cemig.com.br.

Meetings

The Audit Committee met 12 times during the first half of 2025.

Executive Board

The Executive Board has 7 members, whose individual functions are set by the Company’s bylaws. They are elected by the Board of Directors, for a period of office of two years, subject to the applicable requirements of law and regulation, and may be re-elected up to three times.

90 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Members are allowed simultaneously also to hold non-remunerated positions in the management of wholly owned subsidiaries of Cemig, upon decision by the Board of Directors. They are also, obligatorily under the by-laws, members, with the same positions, of the Boards of Directors of Cemig GT (Generation and Transmission) and Cemig D (Distribution).

The term of office of the current vice-presidents and president expires at the second meeting of the Board of Directors following the 2024 Annual General Meeting.

The Executive Board will be assessed, by the Board of Directors on their individual and collective performance, with due regard for the following minimum requirements:

| § | submission of a report on acts of management, as to lawfulness and efficacy of management action;

| § | contribution to the profit for the period; and

| § | achievement of the objectives specified in the Multi-year Business Plan and compliance with the Long-term Strategy and the Annual Budget.

The members of the Executive Board, their resumes and responsibilities are on our website: http://ri.cemig.com.br

Meetings

The Executive Board met 28 times during the second quarter of 2025 to discuss strategic planning, projects, acquisitions of new assets, various investments, among other matters.

Audit Board

Membership, election and period of office

We have a permanent Audit Board, made up of five sitting members and their respective substitute members. They are elected by the Annual General Meeting of Shareholders, for periods of office of two years.

Nominations to the Audit Board must obey the following:

§ |  | The following two groups of shareholders each have the right to elect one member, in separate votes, in accordance with the applicable legislation: (i) the minority holders of common shares; and (ii) the holders of preferred shares.

§ |  | The majority of the members must be elected by the Company’s controlling shareholder; at least one must be a public employee, with a permanent employment link to the Public Administration.

91 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

The members of the Audit Board and their curriculim are on Cemig’s website: http://ri.cemig.com.br.

Meetings

In the second quarter of 2025, the Audit Board met 7 times.

Internal auditing, management of risks and internal controls

Maintaining a minimum frequency of a year for the updating procedure, the Executive Board and the Board of Directors approved, in 2024, after consideration by the Audit Committee, Cemig’s updated Corporate Top Risks for 2024-25.

The Matrix includes 26 Top Risks, including, in this cycle, risks from some of the Company's investees. These risks are continuously monitored by management. The Matrix includes risks from the Distribution, Generation, Transmission, Commercialization, Innovation, Information Technology, People and Corporate Services, ESG (Environmental, Social and Governance), Communication, Financial, Shareholdings and Divestment, Institutional Regulatory and Control and Integrity pillars.

The company has a Risk Committee, created in 2022, linked to and advising the Board of Directors. It was given the duties of analysis of compliance with the requirements of the regulatory and inspection agencies; definition of the principal risks (‘Top Risks’), and respective treatment; identification and measurement of action plans and control of the risks identified; and assessment of the limits of tolerance to the risks to which the Company will be exposed.

With regard to responses to relevant risks and those where tolerance limits have been exceeded, the Internal Controls environment has an annual process for reviewing and testing the design of all the internal controls in the Internal Risks Controls Matrix, in order to keep them adherent, up-to-date and evaluated with respect to the adequacy of risk coverage. In the latest cycle, the Company expanded the scope of review and testing to include internal controls related to the Top Risks, in accordance with the same methodological standards and requirements of the COSO (Committee of Sponsoring Organizations of the Treadway Commission) Internal Control – Integrated Framework (ICIF) and the U.S. Sarbanes-Oxley Act (SOX). The actions and investments in the Internal Controls Environment have, in recent years, ensured its effectiveness in the assessment of management and the independent external auditor, demonstrating confidence in the Company's risk management.

92 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Furthermore, the Company maintains an internal audit function, responsible for the preparation and execution of the Annual Internal Audit Plan, which is validated by the Audit Committee and approved by the Board of Directors. This Plan provides for the assessment of key business and corporate processes and is guided by the organizational strategy and related risks, with the objective of evaluating the adequacy, effectiveness, and efficiency of the Company’s processes. The Internal Audit function independently assesses the effectiveness of governance and risk management processes, as well as the effectiveness of the internal control system, reporting any deficiencies and improvement opportunities, and recommending applicable actions. Internal Audit also monitors the implementation of corrective and preventive actions by the responsible areas, as well as their maintenance and effectiveness in mitigating risks, aiming to add value to the business and strengthen corporate governance.

IIA May Brasil 2025 Award

In recognition of its achievements, the Company’s Internal Audit department was once again honored with the IIA May Brasil 2025 Award, granted by the Institute of Internal Auditors of Brazil (IIA Brasil).

This achievement comes in the year the department celebrates its 70th anniversary, marking its presence at the forefront of the field through investments in innovation and greater integration with audited areas, generating even more significant results for the Company.

Among the initiatives that contributed to this recognition is the Integra AI (Internal Audit) Project, created in 2024 to promote a cycle of structured conversations with business process leaders and corporate areas. The objective is to bring Internal Audit closer to other Cemig units, strengthening relationships, expanding the understanding of critical processes, and identifying improvement opportunities.

Another highlight was the team’s participation in the Integrity Forum 2025, the largest Governance, Risk, and Compliance event in the country. On that occasion, Cemig presented the digital transformation of Internal Audit, with automation initiatives, intensive use of data analytics, and the achievement of the international quality certification (QA – IIA Brasil).

The IIA May Award reflects the dedication and ethical commitment of the Internal Audit team to the Company, focusing its actions on adding value to its business in the electric power sector.

The Compliance and Anti-fraud Policy

The Company values the prevention and combat of fraud, corruption, and any acts that may deviate from the required ethical conduct, as well as from established internal and external regulations. To this end, it relies on the commitment and diligence of its entire workforce to ensure that unlawful or unethical acts are not carried out on its behalf.

To prevent the occurrence of such acts, the Company maintains a robust system of internal controls and Compliance, which includes, among other elements, an Ethics Committee, a Whistleblower Channel, and internal policies and procedures focused on integrity, auditing, encouragement of reporting misconduct, and the prevention of fraud and corruption. All individuals engaged with Cemig—including shareholders, officers, employees, and contractors—are fully informed of these guidelines. In 2024, Cemig obtained certification under the international ISO 37001 Anti-Bribery Management System standard, reinforcing its commitment to preventing, detecting, and addressing bribery cases.

93 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Furthermore, donations of any kind—whether direct or indirect, in cash or in goods and services, including advertising—with political purposes or that benefit political parties or their affiliates, regardless of their current activity status, are strictly prohibited. This prohibition is in accordance with the requirements of Federal Law No. 9,504/1997, known as the “Electoral Law,” and its amendments introduced by Law No. 13,487 of October 6, 2017.

Cemig’s Whistleblower Channel is available to both internal and external audiences, 24 hours a day, to receive reports of fraud, corruption, favoritism, moral and sexual harassment, among other irregularities that may constitute acts or omissions contrary to the law or to the principles of our Code of Conduct. The Whistleblower Channel ensures confidentiality, anonymity, and protection against retaliation for whistleblowers. The Ethics Committee is responsible for ensuring the proper investigation and handling of all reports received, and responses are made available to whistleblowers upon conclusion of the processes.

Ethical Principles and Cemig Code of Conduct

Cemig Code of Conduct

The new Cemig Code of Conduct was reviewed and revised with participation by employees of all the areas of the Company. It is based on the pillars of Cemig’s identity and policies: respect for life, integrity, generation of value, commitment, innovation, sustainability, social responsibility, and alignment with the Company’s cultural identity. It constitutes a pact which aims to incorporate common values, objectives and behavior, developing a of integrity. The Code is to be complied with by all the people to whom it is addressed: managers, members of the Board of Directors, members of committees under the bylaws, employees, interns and outsourced parties who have any established relationship with the Company’s stakeholders.

The Ethics Committee

The Ethics Committee is responsible, among other attributions, for coordinating action in relation to management (interpretation, publicizing, application and updating) of the Statement of Cemig Code of Conduct, including assessment of and decision on any possible non-compliances.

The Commission is made up of 8 members including Superintendents and Managers, appointed by the Executive Board. It may be contacted through our Ethics Channel - the anonymous reporting channel on the corporate Intranet, or by email, internal or external letter or by an exclusive phone line - these means of communication are widely publicized internally to all staff. These channels enable both reports of adverse activity and also consultations. Reports may result in opening of proceedings to assess any non-compliances with Cemig’s Statement of Cemig Code of Conduct.

94 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

Authorization for Economic-Financial Evaluation

In August 2025, the Company received Official Letter SEDE/ASMERC No. 49/2025 from the State of Minas Gerais, informing that it authorized the Brazilian Development Bank (BNDES) to conduct a Request for Information (RFI). This preliminary and non-binding stage aims to identify specialized technical consultants interested in supporting the preparation of Cemig’s economic-financial valuation report. The objective is to support the Company’s debt amortization process within the scope of the Full Payment Program for State Debts (Propag).

Investor Relations

We maintain a constant and proactive flow of communication with Cemig’s investor market, continually reinforcing our credibility, seeking to increase investors’ interest in the Company’s shares, and to ensure their satisfaction with our shares as an investment.

Our results are published through presentations transmitted via video webcast, with simultaneous translation in English, always with members of the Executive Board present, developing a relationship that is increasingly transparent and in keeping with best corporate government practices.

To serve our shareholders – who are spread over more than 40 countries – and to facilitate optimum coverage of investors, Cemig has been present in and outside Brazil at a very large number of events, including seminars, conferences, investor meetings, congresses and roadshows; as well as holding video conference calls with analysts, investors and others interested in the capital markets.

In August 2024, we held our 29rd Annual Meeting with the Capital Markets, where market professionals had the opportunity to interact with the members of the Executive Board.

95 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

SHAREHOLDING POSITION OF SIGNIFICANT SHAREHOLDERS AS OF JUNE 30, 2025

| Number of shares on June 30, 2025
Common shares | % | Preferred shares | % | Total | %
State of Minas Gerais | 487,540,664 | 50.97 | 22,210 | - | 487,562,874 | 17.04
FIA Dinâmica Energia S/A | 313,988,379 | 32.82 | 160,215,780 | 8.41 | 474,204,159 | 16.57
BNDES Participações | 106,610,119 | 11.14 | - | - | 106,610,119 | 3.73
PZENA | - | - | 95,239,166 | 5.00 | 95,239,166 | 3.33
BlackRock | - | - | 190,624,959 | 10.00 | 190,624,959 | 6.66
Others |  |  |  |  |  |
In Brazil | 35,307,774 | 3.69 | 246,464,704 | 12.94 | 281,772,478 | 9.85
Foreign shareholders | 13,154,975 | 1.38 | 1,212,613,165 | 63.65 | 1,225,768,140 | 42.82
Total | 956,601,911 | 100.00 | 1,905,179,984 | 100.00 | 2,861,781,895 | 100.00

CONSOLIDATED SHAREHOLDING POSITION OF

THE CONTROLLING SHAREHOLDERS AND MANAGERS, AND FREE FLOAT,

ON JUNE 30, 2025

| June 30, 2025
ON | PN
Controlling shareholder | 487,540,664 | 22,210
Other entities of Minas Gerais State | 39,026 | 52,976,361
Fiscal Board | - | 5,200
Executive Board | 19,429 | 32,094
Shares in treasury | 132 | 1,099,880
Free float | 469,002,660 | 1,851,044,239
Total | 956,601,911 | 1,905,179,984

96 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

DIRECTORS’ STATEMENT OF REVIEW OF THE INTERIM FINANCIAL INFORMATION

We hereby state, for the due purposes, under the responsibility of our positions, that in meeting of the Executive Board of Cemig Distribuição S.A., held on August 11, 2025, we approved the conclusion, on that date, of the Company’s Interim Financial Information for the period from January to June 2025. In the same date, approved the submission to the Board of Directors, for decision of the Interim Financial Information for the period from January to June 2025. We also declare that we have reviewed, discussed and agree with the said Interim Financial Information.

Belo Horizonte, August 11, 2025.

Reynaldo Passanezi Filho - President

Sérgio Lopes Cabral - Vice President of Trading

Andrea Marques de Almeida - Vice President of Finance and Investor Relations

Marney Thadeu Antunes - Vice President of Distribution

Marco da Camino Ancona Lopes Soligo - Vice President of Participations and Vice President of Generation and Transmission (interim)

Cristiana Maria Fortini Pinto e Silva - Vice President Legal

Luis Cláudio Correa Villani - Vice President of Information Technology

97 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.

DIRECTORS’ STATEMENT OF REVIEW OF THE REPORT BY THE EXTERNAL AUDITORS ON THE INTERIM FINANCIAL INFORMATION

We hereby state, for the due purposes, under the responsibility of our positions, that in meeting of the Executive Board of Companhia Energética de Minas Gerais (Cemig), Cemig Distribuição S.A. and Cemig Geração e Transmissão S.A), held on August 11, 2025, we approved the conclusion, on that date, of the Company’s Interim Financial Information for the period from January to June 2025; and also submission to the Board of Directors, for decision of the Interim Financial Information for the period from January to June 2025. We also declare that we have reviewed, discussed and agree with the opinions expressed by the representatives of the Independent External Auditors.

Belo Horizonte, August 11, 2025.

Reynaldo Passanezi Filho - President

Sérgio Lopes Cabral - Vice President of Trading

Andrea Marques de Almeida - Vice President of Finance and Investor Relations

Marney Thadeu Antunes - Vice President of Distribution

Marco da Camino Ancona Lopes Soligo - Vice President of Participations and Vice President of Generation and Transmission (interim)

Cristiana Maria Fortini Pinto e Silva - Vice President Legal

Luis Cláudio Correa Villani - Vice President of Information Technology

98 Av. Barbacena, 1200 – Santo Agostinho – 30190-131 Belo Horizonte, MG – Brazil – Fax (+55-31) 3506-5026 – Tel.: (+55-31) 3506-5024 This text is a translation, provided for information only. The original text in Portuguese is the legally valid version.