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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____to_____

Commission File Number | Exact name of registrants as specified in their charters, address of principal executive offices and registrants' telephone number | I.R.S. Employer Identification No.
1-12579 | OGE ENERGY CORP. | 73-1481638
1-1097 | OKLAHOMA GAS AND ELECTRIC COMPANY | 73-0382390

321 North Harvey

P.O. Box 321

Oklahoma City, Oklahoma 73101-0321

405-553-3000

State or other jurisdiction of incorporation or organization: Oklahoma

Securities registered pursuant to Section 12(b) of the Act:

Registrant | Title of each class | Trading Symbol(s) | Name of each exchange on which registered
OGE Energy Corp. | Common Stock | OGE | New York Stock Exchange
Oklahoma Gas and Electric Company | None | N/A | N/A

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

OGE Energy Corp. ☑ Yes ☐ No Oklahoma Gas and Electric Company ☑ Yes ☐ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

OGE Energy Corp. ☑ Yes ☐ No Oklahoma Gas and Electric Company ☑ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

OGE Energy Corp. | Large accelerated filer | ☑ | Accelerated filer | ☐ | Non-accelerated filer | ☐ | Smaller reporting company | ☐ | Emerging growth company | ☐
Oklahoma Gas and Electric Company | Large accelerated filer | ☐ | Accelerated filer | ☐ | Non-accelerated filer | ☑ | Smaller reporting company | ☐ | Emerging growth company | ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

OGE Energy Corp. ☐ Yes ☑ No Oklahoma Gas and Electric Company ☐ Yes ☑ No

At March 31, 2024, there were 200,547,842 shares of OGE Energy Corp.'s common stock, par value $0.01 per share, outstanding.

At March 31, 2024, there were 40,378,745 of Oklahoma Gas and Electric Company's common stock, par value $2.50 per share, outstanding, all of which were held by OGE Energy Corp. There were no other shares of capital stock of the registrants outstanding at such date.

Oklahoma Gas and Electric Company meets the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is therefore filing this form with the reduced disclosure format permitted by General Instruction H(2).

FORM 10-Q

FOR THE QUARTER ENDED MARCH 31, 2024

TABLE OF CONTENTS

| Page
GLOSSARY OF TERMS | ii
FILING FORMAT AND FORWARD-LOOKING STATEMENTS | 1
Part I - FINANCIAL INFORMATION |
Item 1. Financial Statements (Unaudited) | 3
OGE Energy Corp. Condensed Consolidated Financial Statements | 3
Oklahoma Gas and Electric Company Condensed Financial Statements | 9
Combined Notes to Condensed Financial Statements | 14
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations | 29
Item 3. Quantitative and Qualitative Disclosures About Market Risk | 39
Item 4. Controls and Procedures | 40
Part II - OTHER INFORMATION |
Item 1. Legal Proceedings | 41
Item 1A. Risk Factors | 41
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds | 41
Item 5. Other Information | 41
Item 6. Exhibits | 41
Signature | 42

i

GLOSSARY OF TERMS

The following is a glossary of frequently used abbreviations that are found throughout this Form 10-Q.

Abbreviation | Definition
2023 Form 10-K | Annual Report on Form 10-K for the year ended December 31, 2023
APSC | Arkansas Public Service Commission
ASC | Financial Accounting Standards Board Accounting Standards Codification
ASU | Financial Accounting Standards Board Accounting Standards Update
CO 2 | Carbon dioxide
COVID-19 | Novel Coronavirus disease
Dry Scrubber | Dry flue gas desulfurization unit with spray dryer absorber
EPA | U.S. Environmental Protection Agency
Federal Clean Water Act | Federal Water Pollution Control Act of 1972, as amended
FERC | Federal Energy Regulatory Commission
FIP | Federal Implementation Program
GAAP | Accounting principles generally accepted in the U.S.
IRP | Integrated Resource Plan
MWh | Megawatt-hour
NAAQS | National Ambient Air Quality Standard
NO X | Nitrogen oxide
OCC | Oklahoma Corporation Commission
ODEQ | Oklahoma Department of Environmental Quality
OG&E | Oklahoma Gas and Electric Company, wholly-owned subsidiary of OGE Energy
OGE Energy | OGE Energy Corp., collectively with its subsidiaries, holding company and parent company of OG&E
PM | Particulate matter
Pension Plan | Qualified defined benefit retirement plan
Regional Haze | The EPA's Regional Haze Rule
Registrants | OGE Energy and OG&E
Restoration of Retirement Income Plan | Supplemental retirement plan to the Pension Plan
SIP | State Implementation Plan
SPP | Southwest Power Pool
System sales | Sales to OG&E's customers
U.S. | United States of America
USFWS | United States Fish and Wildlife Service
Winter Storm Uri | Unprecedented, prolonged extreme cold weather event in February 2021

ii

FILING FORMAT

This combined Form 10-Q is separately filed by OGE Energy and OG&E. Information in this combined Form 10-Q relating to each individual Registrant is filed by such Registrant on its own behalf. OG&E makes no representation regarding information relating to any other companies affiliated with OGE Energy. Neither OGE Energy, nor any of OGE Energy's subsidiaries, other than OG&E, has any obligation in respect of OG&E's debt securities, and holders of such debt securities should not consider the financial resources or results of operations of OGE Energy nor any of OGE Energy's subsidiaries, other than OG&E (in relevant circumstances), in making a decision with respect to OG&E's debt securities. Similarly, none of OG&E nor any other subsidiary of OGE Energy has any obligation with respect to debt securities of OGE Energy. This combined Form 10-Q should be read in its entirety. No one section of this combined Form 10-Q deals with all aspects of the subject matter of this combined Form 10-Q.

FORWARD-LOOKING STATEMENTS

Except for the historical statements contained herein, the matters discussed within this Form 10-Q, including those matters discussed within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations," are forward-looking statements that are subject to certain risks, uncertainties and assumptions. Such forward-looking statements are intended to be identified in this document by the words "anticipate," "believe," "estimate," "expect," "forecast," "intend," "objective," "plan," "possible," "potential," "project," "target" and similar expressions. Actual results may vary materially from those expressed in forward-looking statements. In addition to the specific risk factors discussed within "Item 1A. Risk Factors" in the Registrants' 2023 Form 10-K and within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" herein, factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to:

•
general economic conditions, including the availability of credit, access to existing lines of credit, access to the commercial paper markets, actions of rating agencies and inflation rates, and their impact on capital expenditures;
•
the ability of the Registrants to access the capital markets and obtain financing on favorable terms, as well as inflation rates and monetary fluctuations;
•
the ability to obtain timely and sufficient rate relief to allow for recovery of items such as capital expenditures, fuel and purchased power costs, operating costs, transmission costs and deferred expenditures;
•
prices and availability of electricity, coal and natural gas;
•
competitive factors, including the extent and timing of the entry of additional competition in the markets served by the Registrants, potentially through deregulation;
•
the impact on demand for the Registrants' services resulting from cost-competitive advances in technology, such as distributed electricity generation and customer energy efficiency programs;
•
technological developments, changing markets and other factors that result in competitive disadvantages and create the potential for impairment of existing assets;
•
factors affecting utility operations such as unusual weather conditions; catastrophic weather-related damage; unscheduled generation outages; unusual maintenance or repairs; unanticipated changes to fossil fuel, natural gas or coal supply costs or availability due to higher demand, shortages, transportation problems or other developments; environmental incidents; or electric transmission or gas pipeline system constraints;
•
availability and prices of raw materials and equipment for current and future construction projects;
•
the effect of retroactive pricing of transactions in the SPP markets or adjustments in market pricing mechanisms by the SPP;
•
federal or state legislation and regulatory decisions and initiatives that affect cost and investment recovery, have an impact on rate structures or affect the speed and degree to which competition enters the Registrants' markets;
•
environmental laws, safety laws or other regulations that may impact the cost of operations, restrict or change the way the Registrants' facilities are operated or result in stranded assets;
•
the ability of the Registrants to meet future capacity requirements mandated by the SPP, which could be impacted by future load growth, environmental regulations recently finalized by the EPA, and the availability of resources;
•
changes in accounting standards, rules or guidelines;
•
the discontinuance of accounting principles for certain types of rate-regulated activities;
•
the cost of protecting assets against, or damage due to, terrorism or cyberattacks, including losing control of our assets and potential ransoms, and other catastrophic events;
•
changes in the use, perception or regulation of generative artificial intelligence technologies, which could limit our ability to utilize such technology, create risk of enhanced regulatory scrutiny, generate uncertainty around intellectual property ownership, licensing or use, or which could otherwise result in risk of damage to our business, reputation or financial results;

1

•
creditworthiness of suppliers, customers and other contractual parties, including large, new customers from emerging industries such as cryptocurrency;
•
social attitudes regarding the electric utility and power industries;
•
identification of suitable investment opportunities to enhance shareholder returns and achieve long-term financial objectives through business acquisitions and divestitures;
•
increased pension and healthcare costs;
•
national and global events that could adversely affect and/or exacerbate macroeconomic conditions, including inflationary pressures, rising interest rates, supply chain disruptions, economic recessions, pandemic health events and uncertainty surrounding continued hostilities or sustained military campaigns, and their collateral consequences;
•
costs and other effects of legal and administrative proceedings, settlements, investigations, claims and matters, including, but not limited to, those described in this Form 10-Q; and
•
other risk factors listed in the reports filed by the Registrants with the Securities and Exchange Commission, including those listed within "Item 1A. Risk Factors" in the Registrants' 2023 Form 10-K.

The Registrants undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

2

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

OGE ENERGY CORP.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

|  | Three Months Ended |
|  | March 31, |
(In millions, except per share data) |  | 2024 |  |  | 2023 |
OPERATING REVENUES |  |  |  |  |  |
Revenues from contracts with customers |  | $ | 582.6 |  |  | $ | 544.6 |
Other revenues |  |  | 14.2 |  |  |  | 12.6 |
Operating revenues |  |  | 596.8 |  |  |  | 557.2 |
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE |  |  | 232.2 |  |  |  | 200.6 |
OPERATING EXPENSES |  |  |  |  |  |
Other operation and maintenance |  |  | 132.4 |  |  |  | 130.4 |
Depreciation and amortization |  |  | 129.2 |  |  |  | 121.2 |
Taxes other than income |  |  | 29.0 |  |  |  | 28.5 |
Operating expenses |  |  | 290.6 |  |  |  | 280.1 |
OPERATING INCOME |  |  | 74.0 |  |  |  | 76.5 |
OTHER INCOME (EXPENSE) |  |  |  |  |  |
Allowance for equity funds used during construction |  |  | 4.7 |  |  |  | 4.5 |
Other net periodic benefit income |  |  | 1.7 |  |  |  | 1.5 |
Other income |  |  | 4.5 |  |  |  | 16.9 |
Other expense |  |  | (4.5 | ) |  |  | (6.5 | )
Net other income |  |  | 6.4 |  |  |  | 16.4 |
INTEREST EXPENSE |  |  |  |  |  |
Interest on long-term debt |  |  | 52.0 |  |  |  | 48.1 |
Allowance for borrowed funds used during construction |  |  | (3.4 | ) |  |  | (2.1 | )
Interest on short-term debt and other interest charges |  |  | 11.6 |  |  |  | 1.8 |
Interest expense |  |  | 60.2 |  |  |  | 47.8 |
INCOME BEFORE TAXES |  |  | 20.2 |  |  |  | 45.1 |
INCOME TAX EXPENSE |  |  | 1.6 |  |  |  | 6.8 |
NET INCOME |  | $ | 18.6 |  |  | $ | 38.3 |
BASIC AVERAGE COMMON SHARES OUTSTANDING |  |  | 200.4 |  |  |  | 200.2 |
DILUTED AVERAGE COMMON SHARES OUTSTANDING |  |  | 200.6 |  |  |  | 200.8 |
BASIC EARNINGS PER AVERAGE COMMON SHARE |  | $ | 0.09 |  |  | $ | 0.19 |
DILUTED EARNINGS PER AVERAGE COMMON SHARE |  | $ | 0.09 |  |  | $ | 0.19 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

3

OGE ENERGY CORP.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

|  | Three Months Ended |
|  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |
Net income |  | $ | 18.6 |  |  | $ | 38.3 |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Pension Plan and Restoration of Retirement Income Plan: |  |  |  |  |  |
Amortization of prior service cost, net of tax of $0.1 and $0.0, respectively |  |  | — |  |  |  | 0.1 |
Amortization of deferred net loss, net of tax of $0.0 and $0.1, respectively |  |  | 0.1 |  |  |  | 0.2 |
Regulatory classification of certain pension costs, net of tax of $1.2 and $0.0, respectively |  |  | 3.9 |  |  |  | — |
Settlement cost, net of tax of $0.0 and $0.2, respectively |  |  | — |  |  |  | 0.9 |
Postretirement benefit plans: |  |  |  |  |  |
Amortization of deferred net gain, net of tax of $0.0 and $0.0, respectively |  |  | (0.1 | ) |  |  | (0.1 | )
Other comprehensive income, net of tax |  |  | 3.9 |  |  |  | 1.1 |
Comprehensive income |  | $ | 22.5 |  |  | $ | 39.4 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

4

OGE ENERGY CORP.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

|  | Three Months Ended March 31, |
(In millions) |  | 2024 |  |  | 2023 |
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |  |  |  |
Net income |  | $ | 18.6 |  |  | $ | 38.3 |
Adjustments to reconcile net income to net cash provided from operating activities: |  |  |  |  |  |
Depreciation and amortization |  |  | 129.2 |  |  |  | 121.2 |
Deferred income taxes and other tax credits, net |  |  | 2.6 |  |  |  | 0.9 |
Allowance for equity funds used during construction |  |  | (4.7 | ) |  |  | (4.5 | )
Stock-based compensation expense |  |  | 3.2 |  |  |  | 3.0 |
Regulatory assets |  |  | (6.4 | ) |  |  | (14.8 | )
Regulatory liabilities |  |  | (3.3 | ) |  |  | (2.7 | )
Other assets |  |  | (4.5 | ) |  |  | (2.2 | )
Other liabilities |  |  | 20.7 |  |  |  | (6.4 | )
Change in certain current assets and liabilities: |  |  |  |  |  |
Accounts receivable and accrued unbilled revenues, net |  |  | 36.7 |  |  |  | 43.4 |
Income taxes receivable |  |  | (0.8 | ) |  |  | 5.9 |
Fuel, materials and supplies inventories |  |  | 9.6 |  |  |  | (38.0 | )
Fuel recoveries |  |  | 16.0 |  |  |  | 144.8 |
Other current assets |  |  | 5.1 |  |  |  | 2.3 |
Accounts payable |  |  | (102.0 | ) |  |  | (103.8 | )
Other current liabilities |  |  | (37.0 | ) |  |  | (15.1 | )
Net cash provided from operating activities |  |  | 83.0 |  |  |  | 172.3 |
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |  |  |  |
Capital expenditures (less allowance for equity funds used during construction) |  |  | (226.9 | ) |  |  | (286.0 | )
Cost of removal and other |  |  | (16.6 | ) |  |  | (26.2 | )
Net cash used in investing activities |  |  | (243.5 | ) |  |  | (312.2 | )
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |  |  |  |
Proceeds from long-term debt |  |  | — |  |  |  | 444.7 |
Increase in short-term debt |  |  | 256.5 |  |  |  | — |
Dividends paid on common stock |  |  | (85.9 | ) |  |  | (83.6 | )
Proceeds (costs) from issuance of common stock |  |  | 0.1 |  |  |  | — |
Cash paid for employee equity-based compensation |  |  | (6.1 | ) |  |  | (2.3 | )
Net cash provided from financing activities |  |  | 164.6 |  |  |  | 358.8 |
NET CHANGE IN CASH AND CASH EQUIVALENTS |  |  | 4.1 |  |  |  | 218.9 |
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD |  |  | 0.2 |  |  |  | 88.1 |
CASH AND CASH EQUIVALENTS AT END OF PERIOD |  | $ | 4.3 |  |  | $ | 307.0 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

5

OGE ENERGY CORP.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

|  | March 31, |  |  | December 31, |
(In millions) |  | 2024 |  |  | 2023 |
ASSETS |  |  |  |  |  |
CURRENT ASSETS |  |  |  |  |  |
Cash and cash equivalents |  | $ | 4.3 |  |  | $ | 0.2 |
Accounts receivable, less reserve of $2.3 and $2.2, respectively |  |  | 181.6 |  |  |  | 208.8 |
Accrued unbilled revenues |  |  | 63.2 |  |  |  | 72.7 |
Income taxes receivable |  |  | 19.0 |  |  |  | 18.2 |
Fuel inventories |  |  | 157.9 |  |  |  | 158.5 |
Materials and supplies, at average cost |  |  | 245.3 |  |  |  | 254.3 |
Other |  |  | 53.7 |  |  |  | 58.8 |
Total current assets |  |  | 725.0 |  |  |  | 771.5 |
OTHER PROPERTY AND INVESTMENTS |  |  |  |  |  |
Other |  |  | 118.9 |  |  |  | 114.0 |
Total other property and investments |  |  | 118.9 |  |  |  | 114.0 |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |  |
In service |  |  | 15,743.0 |  |  |  | 15,588.2 |
Construction work in progress |  |  | 599.0 |  |  |  | 522.2 |
Total property, plant and equipment |  |  | 16,342.0 |  |  |  | 16,110.4 |
Less: accumulated depreciation |  |  | 4,873.2 |  |  |  | 4,809.4 |
Net property, plant and equipment |  |  | 11,468.8 |  |  |  | 11,301.0 |
DEFERRED CHARGES AND OTHER ASSETS |  |  |  |  |  |
Regulatory assets |  |  | 576.6 |  |  |  | 577.6 |
Other |  |  | 28.7 |  |  |  | 26.6 |
Total deferred charges and other assets |  |  | 605.3 |  |  |  | 604.2 |
TOTAL ASSETS |  | $ | 12,918.0 |  |  | $ | 12,790.7 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

6

OGE ENERGY CORP.

CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

(Unaudited)

|  | March 31, |  |  | December 31, |
(In millions) |  | 2024 |  |  | 2023 |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |  |  |
CURRENT LIABILITIES |  |  |  |  |  |
Short-term debt |  | $ | 755.7 |  |  | $ | 499.2 |
Accounts payable |  |  | 211.9 |  |  |  | 276.4 |
Dividends payable |  |  | 83.9 |  |  |  | 83.8 |
Customer deposits |  |  | 105.6 |  |  |  | 103.5 |
Accrued taxes |  |  | 29.0 |  |  |  | 47.6 |
Accrued interest |  |  | 55.5 |  |  |  | 57.4 |
Accrued compensation |  |  | 30.7 |  |  |  | 46.8 |
Long-term debt due within one year |  |  | 79.4 |  |  |  | — |
Fuel clause over recoveries |  |  | 36.5 |  |  |  | 20.5 |
Other |  |  | 41.5 |  |  |  | 44.0 |
Total current liabilities |  |  | 1,429.7 |  |  |  | 1,179.2 |
LONG-TERM DEBT |  |  | 4,261.9 |  |  |  | 4,340.5 |
DEFERRED CREDITS AND OTHER LIABILITIES |  |  |  |  |  |
Accrued benefit obligations |  |  | 161.5 |  |  |  | 172.7 |
Deferred income taxes |  |  | 1,318.4 |  |  |  | 1,300.8 |
Deferred investment tax credits |  |  | 11.1 |  |  |  | 11.3 |
Regulatory liabilities |  |  | 1,047.4 |  |  |  | 1,061.6 |
Other |  |  | 242.7 |  |  |  | 213.0 |
Total deferred credits and other liabilities |  |  | 2,781.1 |  |  |  | 2,759.4 |
Total liabilities |  |  | 8,472.7 |  |  |  | 8,279.1 |
COMMITMENTS AND CONTINGENCIES (NOTE 12) |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |
Common stockholders' equity |  |  | 1,142.4 |  |  |  | 1,145.1 |
Retained earnings |  |  | 3,306.2 |  |  |  | 3,373.7 |
Accumulated other comprehensive loss, net of tax |  |  | (3.3 | ) |  |  | (7.2 | )
Total stockholders' equity |  |  | 4,445.3 |  |  |  | 4,511.6 |
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY |  | $ | 12,918.0 |  |  | $ | 12,790.7 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

7

OGE ENERGY CORP.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

(Unaudited)

|  | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
(In millions) |  | Shares |  |  | Value |  |  | Premium on Common Stock |  |  | Retained Earnings |  |  | Accumulated Other Comprehensive (Loss) Income |  |  | Total |
Balance at December 31, 2023 |  |  | 200.3 |  |  | $ | 2.0 |  |  | $ | 1,143.1 |  |  | $ | 3,373.7 |  |  | $ | (7.2 | ) |  | $ | 4,511.6 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 18.6 |  |  |  | — |  |  |  | 18.6 |
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3.9 |  |  |  | 3.9 |
Dividends declared on common stock ($0.4182 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (86.1 | ) |  |  | — |  |  |  | (86.1 | )
Stock-based compensation |  |  | 0.2 |  |  |  | — |  |  |  | (2.7 | ) |  |  | — |  |  |  | — |  |  |  | (2.7 | )
Balance at March 31, 2024 |  |  | 200.5 |  |  | $ | 2.0 |  |  | $ | 1,140.4 |  |  | $ | 3,306.2 |  |  | $ | (3.3 | ) |  | $ | 4,445.3 |

|  | Common Stock |  |  | Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |
(In millions) |  | Shares |  |  | Value |  |  | Shares |  |  | Value |  |  | Premium on Common Stock |  |  | Retained Earnings |  |  | Accumulated Other Comprehensive (Loss) Income |  |  | Total |
Balance at December 31, 2022 |  |  | 200.2 |  |  | $ | 2.0 |  |  |  | — |  |  | $ | (0.1 | ) |  | $ | 1,132.5 |  |  | $ | 3,290.9 |  |  | $ | (11.9 | ) |  | $ | 4,413.4 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 38.3 |  |  |  | — |  |  |  | 38.3 |
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1.1 |  |  |  | 1.1 |
Dividends declared on common stock ($0.4141 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (83.6 | ) |  |  | — |  |  |  | (83.6 | )
Stock-based compensation |  |  | 0.1 |  |  |  | — |  |  |  | — |  |  |  | 0.1 |  |  |  | 0.7 |  |  |  | — |  |  |  | — |  |  |  | 0.8 |
Balance at March 31, 2023 |  |  | 200.3 |  |  | $ | 2.0 |  |  |  | — |  |  | $ | — |  |  | $ | 1,133.2 |  |  | $ | 3,245.6 |  |  | $ | (10.8 | ) |  | $ | 4,370.0 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

8

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

(Unaudited)

|  | Three Months Ended |
|  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |
OPERATING REVENUES |  |  |  |  |  |
Revenues from contracts with customers |  | $ | 582.6 |  |  | $ | 544.6 |
Other revenues |  |  | 14.2 |  |  |  | 12.6 |
Operating revenues |  |  | 596.8 |  |  |  | 557.2 |
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE |  |  | 232.2 |  |  |  | 200.6 |
OPERATING EXPENSES |  |  |  |  |  |
Other operation and maintenance |  |  | 132.4 |  |  |  | 131.5 |
Depreciation and amortization |  |  | 129.2 |  |  |  | 121.2 |
Taxes other than income |  |  | 29.0 |  |  |  | 27.1 |
Operating expenses |  |  | 290.6 |  |  |  | 279.8 |
OPERATING INCOME |  |  | 74.0 |  |  |  | 76.8 |
OTHER INCOME (EXPENSE) |  |  |  |  |  |
Allowance for equity funds used during construction |  |  | 4.7 |  |  |  | 4.5 |
Other net periodic benefit income |  |  | 1.8 |  |  |  | 1.6 |
Other income |  |  | 2.0 |  |  |  | 10.1 |
Other expense |  |  | (1.9 | ) |  |  | (0.9 | )
Net other income |  |  | 6.6 |  |  |  | 15.3 |
INTEREST EXPENSE |  |  |  |  |  |
Interest on long-term debt |  |  | 51.1 |  |  |  | 46.5 |
Allowance for borrowed funds used during construction |  |  | (3.4 | ) |  |  | (2.1 | )
Interest on short-term debt and other interest charges |  |  | 3.7 |  |  |  | 1.3 |
Interest expense |  |  | 51.4 |  |  |  | 45.7 |
INCOME BEFORE TAXES |  |  | 29.2 |  |  |  | 46.4 |
INCOME TAX EXPENSE |  |  | 4.0 |  |  |  | 6.6 |
NET INCOME |  | $ | 25.2 |  |  | $ | 39.8 |
Other comprehensive income, net of tax |  |  | — |  |  |  | — |
COMPREHENSIVE INCOME |  | $ | 25.2 |  |  | $ | 39.8 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

9

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED STATEMENTS OF CASH FLOWS

(Unaudited)

|  | Three Months Ended March 31, |
(In millions) |  | 2024 |  |  | 2023 |
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |  |  |  |
Net income |  | $ | 25.2 |  |  | $ | 39.8 |
Adjustments to reconcile net income to net cash provided from operating activities: |  |  |  |  |  |
Depreciation and amortization |  |  | 129.2 |  |  |  | 121.2 |
Deferred income taxes and other tax credits, net |  |  | 4.2 |  |  |  | (0.4 | )
Allowance for equity funds used during construction |  |  | (4.7 | ) |  |  | (4.5 | )
Stock-based compensation expense |  |  | 3.2 |  |  |  | 0.6 |
Regulatory assets |  |  | (6.4 | ) |  |  | (14.8 | )
Regulatory liabilities |  |  | (3.3 | ) |  |  | (2.7 | )
Other assets |  |  | (3.6 | ) |  |  | (2.9 | )
Other liabilities |  |  | 28.5 |  |  |  | (2.8 | )
Change in certain current assets and liabilities: |  |  |  |  |  |
Accounts receivable and accrued unbilled revenues, net |  |  | 36.7 |  |  |  | 43.9 |
Fuel, materials and supplies inventories |  |  | 9.6 |  |  |  | (38.0 | )
Fuel recoveries |  |  | 16.0 |  |  |  | 144.8 |
Other current assets |  |  | 1.6 |  |  |  | 3.1 |
Accounts payable |  |  | (85.7 | ) |  |  | (87.4 | )
Income taxes payable - parent |  |  | (0.2 | ) |  |  | 6.9 |
Other current liabilities |  |  | (25.7 | ) |  |  | (12.3 | )
Net cash provided from operating activities |  |  | 124.6 |  |  |  | 194.5 |
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |  |  |  |
Capital expenditures (less allowance for equity funds used during construction) |  |  | (226.9 | ) |  |  | (286.0 | )
Cost of removal |  |  | (16.2 | ) |  |  | (24.5 | )
Net cash used in investing activities |  |  | (243.1 | ) |  |  | (310.5 | )
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |  |  |  |
Changes in advances with parent |  |  | 76.0 |  |  |  | (328.7 | )
Proceeds from long-term debt |  |  | — |  |  |  | 444.7 |
Increase in short-term debt |  |  | 46.6 |  |  |  | — |
Net cash provided from financing activities |  |  | 122.6 |  |  |  | 116.0 |
NET CHANGE IN CASH AND CASH EQUIVALENTS |  |  | 4.1 |  |  |  | — |
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD |  |  | 0.2 |  |  |  | — |
CASH AND CASH EQUIVALENTS AT END OF PERIOD |  | $ | 4.3 |  |  | $ | — |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

10

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED BALANCE SHEETS

(Unaudited)

|  | March 31, |  |  | December 31, |
(In millions) |  | 2024 |  |  | 2023 |
ASSETS |  |  |  |  |  |
CURRENT ASSETS |  |  |  |  |  |
Cash and cash equivalents |  | $ | 4.3 |  |  | $ | 0.2 |
Accounts receivable, less reserve of $2.3 and $2.2, respectively |  |  | 181.6 |  |  |  | 208.8 |
Accrued unbilled revenues |  |  | 63.2 |  |  |  | 72.7 |
Fuel inventories |  |  | 157.9 |  |  |  | 158.5 |
Materials and supplies, at average cost |  |  | 245.3 |  |  |  | 254.3 |
Other |  |  | 45.1 |  |  |  | 46.7 |
Total current assets |  |  | 697.4 |  |  |  | 741.2 |
OTHER PROPERTY AND INVESTMENTS |  |  | 8.0 |  |  |  | 4.6 |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |  |  |
In service |  |  | 15,736.9 |  |  |  | 15,582.1 |
Construction work in progress |  |  | 599.0 |  |  |  | 522.2 |
Total property, plant and equipment |  |  | 16,335.9 |  |  |  | 16,104.3 |
Less: accumulated depreciation |  |  | 4,873.2 |  |  |  | 4,809.4 |
Net property, plant and equipment |  |  | 11,462.7 |  |  |  | 11,294.9 |
DEFERRED CHARGES AND OTHER ASSETS |  |  |  |  |  |
Regulatory assets |  |  | 576.6 |  |  |  | 577.6 |
Other |  |  | 26.4 |  |  |  | 24.3 |
Total deferred charges and other assets |  |  | 603.0 |  |  |  | 601.9 |
TOTAL ASSETS |  | $ | 12,771.1 |  |  | $ | 12,642.6 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

11

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED BALANCE SHEETS (Continued)

(Unaudited)

|  | March 31, |  |  | December 31, |
(In millions) |  | 2024 |  |  | 2023 |
LIABILITIES AND STOCKHOLDER'S EQUITY |  |  |  |  |  |
CURRENT LIABILITIES |  |  |  |  |  |
Short-term debt |  | $ | 46.6 |  |  | $ | — |
Accounts payable |  |  | 180.3 |  |  |  | 228.5 |
Advances from parent |  |  | 223.4 |  |  |  | 147.7 |
Customer deposits |  |  | 105.6 |  |  |  | 103.5 |
Accrued taxes |  |  | 28.7 |  |  |  | 47.2 |
Accrued interest |  |  | 55.5 |  |  |  | 56.6 |
Accrued compensation |  |  | 30.7 |  |  |  | 37.0 |
Long-term debt due within one year |  |  | 79.4 |  |  |  | — |
Fuel clause over recoveries |  |  | 36.5 |  |  |  | 20.5 |
Other |  |  | 41.7 |  |  |  | 43.6 |
Total current liabilities |  |  | 828.4 |  |  |  | 684.6 |
LONG-TERM DEBT |  |  | 4,212.0 |  |  |  | 4,290.6 |
DEFERRED CREDITS AND OTHER LIABILITIES |  |  |  |  |  |
Accrued benefit obligations |  |  | 96.4 |  |  |  | 96.2 |
Deferred income taxes |  |  | 1,358.7 |  |  |  | 1,340.8 |
Deferred investment tax credits |  |  | 11.1 |  |  |  | 11.3 |
Regulatory liabilities |  |  | 1,047.4 |  |  |  | 1,061.6 |
Other |  |  | 214.0 |  |  |  | 182.8 |
Total deferred credits and other liabilities |  |  | 2,727.6 |  |  |  | 2,692.7 |
Total liabilities |  |  | 7,768.0 |  |  |  | 7,667.9 |
COMMITMENTS AND CONTINGENCIES (NOTE 12) |  |  |  |  |  |
STOCKHOLDER'S EQUITY |  |  |  |  |  |
Common stockholder's equity |  |  | 1,580.9 |  |  |  | 1,577.7 |
Retained earnings |  |  | 3,422.2 |  |  |  | 3,397.0 |
Total stockholder's equity |  |  | 5,003.1 |  |  |  | 4,974.7 |
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY |  | $ | 12,771.1 |  |  | $ | 12,642.6 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

12

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY

(Unaudited)

|  | Common Stock |  |  |  |  |  |  |  |  |  |
(In millions) |  | Shares |  |  | Value |  |  | Premium on Common Stock |  |  | Retained Earnings |  |  | Total |
Balance at December 31, 2023 |  |  | 40.4 |  |  | $ | 100.9 |  |  | $ | 1,476.8 |  |  | $ | 3,397.0 |  |  | $ | 4,974.7 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 25.2 |  |  |  | 25.2 |
Stock-based compensation |  |  | — |  |  |  | — |  |  |  | 3.2 |  |  |  | — |  |  |  | 3.2 |
Balance at March 31, 2024 |  |  | 40.4 |  |  | $ | 100.9 |  |  | $ | 1,480.0 |  |  | $ | 3,422.2 |  |  | $ | 5,003.1 |
Balance at December 31, 2022 |  |  | 40.4 |  |  | $ | 100.9 |  |  | $ | 1,473.7 |  |  | $ | 3,470.6 |  |  | $ | 5,045.2 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 39.8 |  |  |  | 39.8 |
Stock-based compensation |  |  | — |  |  |  | — |  |  |  | 0.6 |  |  |  | — |  |  |  | 0.6 |
Balance at March 31, 2023 |  |  | 40.4 |  |  | $ | 100.9 |  |  | $ | 1,474.3 |  |  | $ | 3,510.4 |  |  | $ | 5,085.6 |

The accompanying Combined Notes to Condensed Financial Statements are an integral part hereof.

13

COMBINED NOTES TO THE CONDENSED FINANCIAL STATEMENTS

(Unaudited)

Index of Combined Notes to Condensed Financial Statements

The Combined Notes to the Condensed Financial Statements are a combined presentation for OGE Energy and OG&E. The following table indicates the Registrant(s) to which each Note applies.

| OGE Energy |  | OG&E
Note 1. Summary of Significant Accounting Policies | X |  | X
Note 2. Accounting Pronouncements | X |  | X
Note 3. Revenue Recognition | X |  | X
Note 4. Fair Value Measurements | X |  | X
Note 5. Stock-Based Compensation | X |  | X
Note 6. Income Taxes | X |  | X
Note 7. Common Equity | X |  |
Note 8. Long-Term Debt | X |  | X
Note 9. Short-Term Debt and Credit Facilities | X |  | X
Note 10. Retirement Plans and Postretirement Benefit Plans | X |  | X
Note 11. Report of Business Segments | X |  |
Note 12. Commitments and Contingencies | X |  | X
Note 13. Rate Matters and Regulation | X |  | X

1. Summary of Significant Accounting Policies

Organization

OGE Energy is a holding company whose primary investment provides electricity in Oklahoma and western Arkansas. OGE Energy's electric company operations are conducted through its wholly-owned subsidiary, OG&E, which generates, transmits, distributes and sells electric energy in Oklahoma and western Arkansas and are reported through OGE Energy's electric company business segment. OG&E's rates are subject to regulation by the OCC, the APSC and the FERC. OG&E was incorporated in 1902 under the laws of the Oklahoma Territory and is the largest electric company in Oklahoma, with a franchised service territory that includes Fort Smith, Arkansas and the surrounding communities. OG&E sold its retail natural gas business in 1928 and is no longer engaged in the natural gas distribution business.

The accounts of OGE Energy and its wholly-owned subsidiaries, including OG&E, are included in OGE Energy's condensed consolidated financial statements. All intercompany transactions and balances are eliminated in such consolidation.

Basis of Presentation

The condensed financial statements included herein have been prepared by the Registrants, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations; however, the Registrants believe that the disclosures are adequate to prevent the information presented from being misleading.

In the opinion of management, all adjustments necessary to fairly present the financial position of the Registrants at March 31, 2024 and December 31, 2023, the results of the Registrants' operations for the three months ended March 31, 2024 and 2023 and the Registrants' cash flows for the three months ended March 31, 2024 and 2023 have been included and are of a normal, recurring nature except as otherwise disclosed. Management also has evaluated the impact of events occurring after March 31, 2024 up to the date of issuance of these condensed financial statements, and these statements contain all necessary adjustments and disclosures resulting from that evaluation.

Due to seasonal fluctuations and other factors, the Registrants' operating results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or for any future period. The condensed financial statements and notes thereto should be read in conjunction with the audited financial statements and notes thereto included in the Registrants' 2023 Form 10-K.

14

Accounting Records

The accounting records of OG&E are maintained in accordance with the Uniform System of Accounts prescribed by the FERC and adopted by the OCC and the APSC. Additionally, OG&E, as a regulated electric company, is subject to accounting principles for certain types of rate-regulated activities, which provide that certain incurred costs that would otherwise be charged to expense can be deferred as regulatory assets, based on the expected recovery from customers in future rates. Likewise, certain actual or anticipated credits that would otherwise reduce expense can be deferred as regulatory liabilities, based on the expected flowback to customers in future rates. Management's expected recovery of deferred costs and flowback of deferred credits generally results from specific decisions by regulators granting such ratemaking treatment.

OG&E records certain incurred costs and obligations as regulatory assets or liabilities if, based on regulatory orders or other available evidence, it is probable that the costs or obligations will be included in amounts allowable for recovery or refund in future rates. The following table presents a summary of OG&E's regulatory assets and liabilities.

|  | March 31, |  |  | December 31, |
(In millions) |  | 2024 |  |  | 2023 |
REGULATORY ASSETS |  |  |  |  |  |
Current: |  |  |  |  |  |
Oklahoma Energy Efficiency Rider under recoveries (A) |  | $ | 1.7 |  |  | $ | 3.8 |
Other (A) |  |  | 2.3 |  |  |  | 2.7 |
Total current regulatory assets |  | $ | 4.0 |  |  | $ | 6.5 |
Non-current: |  |  |  |  |  |
Oklahoma deferred storm expenses |  | $ | 254.9 |  |  | $ | 261.1 |
Pension tracker |  |  | 95.6 |  |  |  | 91.9 |
Benefit obligations regulatory asset |  |  | 92.8 |  |  |  | 89.4 |
Arkansas Winter Storm Uri costs |  |  | 69.2 |  |  |  | 71.0 |
Sooner Dry Scrubbers |  |  | 17.0 |  |  |  | 17.2 |
Arkansas deferred pension expenses |  |  | 12.4 |  |  |  | 12.7 |
Oklahoma SAP S/4 HANA deferred expenses |  |  | 7.6 |  |  |  | 6.0 |
Unamortized loss on reacquired debt |  |  | 7.0 |  |  |  | 7.2 |
COVID-19 impacts |  |  | 6.4 |  |  |  | 6.8 |
Frontier Plant deferred expenses |  |  | 3.2 |  |  |  | 3.6 |
Other |  |  | 10.5 |  |  |  | 10.7 |
Total non-current regulatory assets |  | $ | 576.6 |  |  | $ | 577.6 |
REGULATORY LIABILITIES |  |  |  |  |  |
Current: |  |  |  |  |  |
Oklahoma fuel clause over recoveries |  | $ | 19.9 |  |  | $ | 15.6 |
Arkansas fuel clause over recoveries |  |  | 16.6 |  |  |  | 4.9 |
SPP cost tracker over recoveries (B) |  |  | 10.8 |  |  |  | 10.4 |
Other (B) |  |  | 1.0 |  |  |  | 2.3 |
Total current regulatory liabilities |  | $ | 48.3 |  |  | $ | 33.2 |
Non-current: |  |  |  |  |  |
Income taxes refundable to customers, net |  | $ | 823.9 |  |  | $ | 838.0 |
Accrued removal obligations, net |  |  | 222.0 |  |  |  | 222.0 |
Other |  |  | 1.5 |  |  |  | 1.6 |
Total non-current regulatory liabilities |  | $ | 1,047.4 |  |  | $ | 1,061.6 |

(A)
Included in Other Current Assets in the condensed balance sheets.
(B)
Included in Other Current Liabilities in the condensed balance sheets.

Management continuously monitors the future recoverability of regulatory assets. When in management's judgment future recovery becomes impaired, the amount of the regulatory asset is adjusted, as appropriate. If OG&E were required to discontinue the application of accounting principles for certain types of rate-regulated activities for some or all of its operations, it could result in writing off the related regulatory assets or liabilities, which could have significant financial effects.

15

Allowance for Uncollectible Accounts Receivable

Customer balances are generally written off if not collected within six months after the final billing date. The allowance for uncollectible accounts receivable for OG&E is generally calculated by multiplying the last six months of electric revenue by the provision rate, which is based on a 12-month historical average of actual balances written off and is adjusted for current conditions and supportable forecasts as necessary. To the extent the historical collection rates, when incorporating forecasted conditions, are not representative of future collections, there could be an effect on the amount of uncollectible expense recognized. Also, a portion of the uncollectible provision related to fuel within the Oklahoma jurisdiction is being recovered through the fuel adjustment clause. The allowance for uncollectible accounts receivable is a reduction to Accounts Receivable in the condensed balance sheets and is included in Other Operation and Maintenance Expense in the condensed statements of income.

New business customers are required to provide a security deposit in the form of cash, bond or irrevocable letter of credit that is refunded when the account is closed. New residential customers whose outside credit scores indicate an elevated risk are required to provide a security deposit that is refunded based on customer protection rules defined by the OCC and the APSC. The payment behavior of all existing customers is continuously monitored, and, if the payment behavior indicates sufficient risk within the meaning of the applicable utility regulation, customers will be required to provide a security deposit.

Related Party Transactions

OGE Energy charges operating costs to OG&E based on several factors, and operating costs directly related to OG&E are assigned as such. Operating costs incurred for the benefit of OG&E are allocated either as overhead based primarily on labor costs or using the "Distrigas" method, which is a three-factor formula that uses an equal weighting of payroll, net operating revenues and gross property, plant and equipment. OGE Energy adopted this method as a result of a recommendation by the OCC Staff and believes this method provides a reasonable basis for allocating common expenses. OGE Energy charged operating costs to OG&E of $37.6 million during the three months ended March 31, 2023. As a result of OGE Energy's exit of its former midstream business and becoming primarily an electric company, all employees are directly employed by OG&E beginning in 2024.

Accumulated Other Comprehensive Income (Loss)

The following tables present changes in the components of accumulated other comprehensive income (loss) attributable to OGE Energy during the three months ended March 31, 2024 and 2023. All amounts below are presented net of tax.

(In millions) |  | Pension Plan and Restoration of Retirement Income Plan |  |  | Postretirement Benefit Plans |  |  | Total |
Balance at December 31, 2023 |  | $ | (12.9 | ) |  | $ | 5.7 |  |  | $ | (7.2 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 0.1 |  |  |  | (0.1 | ) |  |  | — |
Regulatory classification of certain pension costs |  |  | 3.9 |  |  |  | — |  |  |  | 3.9 |
Balance at March 31, 2024 |  | $ | (8.9 | ) |  | $ | 5.6 |  |  | $ | (3.3 | )

(In millions) |  | Pension Plan and Restoration of Retirement Income Plan |  |  | Postretirement Benefit Plans |  |  | Total |
Balance at December 31, 2022 |  | $ | (18.5 | ) |  | $ | 6.6 |  |  | $ | (11.9 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 0.3 |  |  |  | (0.1 | ) |  |  | 0.2 |
Settlement cost |  |  | 0.9 |  |  |  | — |  |  |  | 0.9 |
Balance at March 31, 2023 |  | $ | (17.3 | ) |  | $ | 6.5 |  |  | $ | (10.8 | )

16

The following table presents significant amounts reclassified out of accumulated other comprehensive income (loss) attributable to OGE Energy by the respective line items in net income during the three months ended March 31, 2024 and 2023.

Details about Accumulated Other Comprehensive Income (Loss) Components |  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  | Affected Line Item in OGE Energy's Statements of Income
|  | Three Months Ended |  |  |
|  | March 31, |  |  |
(In millions) |  | 2024 |  |  | 2023 |  |  |
Amortization of Pension Plan and Restoration of Retirement Income Plan items: |  |  |  |  |  |  |  |
Actuarial losses |  | $ | (0.1 | ) |  | $ | (0.3 | ) |  | (A)
Prior service cost |  |  | (0.1 | ) |  |  | (0.1 | ) |  | (A)
Settlement cost |  |  | — |  |  |  | (1.1 | ) |  | (A)
|  |  | (0.2 | ) |  |  | (1.5 | ) |  | Income Before Taxes
|  |  | (0.1 | ) |  |  | (0.3 | ) |  | Income Tax Expense
|  | $ | (0.1 | ) |  | $ | (1.2 | ) |  | Net Income
Amortization of postretirement benefit plans items: |  |  |  |  |  |  |  |
Actuarial gains |  | $ | 0.1 |  |  | $ | 0.1 |  |  | (A)
|  |  | 0.1 |  |  |  | 0.1 |  |  | Income Before Taxes
|  |  | — |  |  |  | — |  |  | Income Tax Expense
|  | $ | 0.1 |  |  | $ | 0.1 |  |  | Net Income
Total reclassifications for the period, net of tax |  | $ | — |  |  | $ | (1.1 | ) |  | Net Income

(A)
These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (see Note 10 for additional information).

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation. The Registrants updated the March 31, 2023 presentation of removal costs related to long-lived assets within the condensed statements of cash flows to reflect the classification in the Registrants' 2023 Form 10-K.

2. Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board issued ASU 2023-07, "Segment Reporting (Topic 280) Improvements to Reportable Segment Disclosures." The amendments in this update improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis. The standard is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Registrants are currently evaluating the impact of adopting this standard on their financial statements.

In December 2023, the Financial Accounting Standards Board issued ASU 2023-09, "Income Taxes (Topic 740) Improvements to Income Tax Disclosures." The amendments in this update require public entities on an annual basis to (i) disclose specific categories in the rate reconciliation and (ii) provide additional information for reconciling items that meet a quantitative threshold. Further, the amendments require entities to disclose on an annual basis income taxes paid (net of refunds received) disaggregated by federal (national), state and foreign taxes and to disaggregate the information by jurisdiction based on a quantitative threshold. The standard is effective January 1, 2025, and early adoption is permitted. The Registrants are currently evaluating the impact of adopting this standard on their financial statements.

The Registrants believe that other recently adopted and recently issued accounting standards that are not yet effective do not appear to have a material impact on the Registrants' financial position, results of operations or cash flows upon adoption.

17

3. Revenue Recognition

The following table presents OG&E's revenues from contracts with customers disaggregated by customer classification. OG&E's operating revenues disaggregated by customer classification can be found in "OG&E (Electric Company) Results of Operations" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."

|  | Three Months Ended March 31, |
(In millions) |  | 2024 |  |  | 2023 |
Residential |  | $ | 221.4 |  |  | $ | 205.5 |
Commercial |  |  | 148.8 |  |  |  | 132.3 |
Industrial |  |  | 53.0 |  |  |  | 53.3 |
Oilfield |  |  | 49.7 |  |  |  | 48.1 |
Public authorities and street light |  |  | 51.0 |  |  |  | 45.1 |
System sales revenues |  |  | 523.9 |  |  |  | 484.3 |
Provision for tax refund |  |  | — |  |  |  | 1.4 |
Integrated market |  |  | 15.0 |  |  |  | 12.7 |
Transmission |  |  | 35.6 |  |  |  | 35.2 |
Other |  |  | 8.1 |  |  |  | 11.0 |
Revenues from contracts with customers |  | $ | 582.6 |  |  | $ | 544.6 |

4. Fair Value Measurements

The classification of the Registrants' fair value measurements requires judgment regarding the degree to which market data is observable or corroborated by observable market data. GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value based on observable and unobservable data. The hierarchy categorizes the inputs into three levels, with the highest priority given to quoted prices in active markets for identical unrestricted assets or liabilities (Level 1) and the lowest priority given to unobservable inputs (Level 3). Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The three levels defined in the fair value hierarchy are as follows:

Level 1 inputs are quoted prices in active markets for identical unrestricted assets or liabilities that are accessible at the measurement date.

Level 2 inputs are inputs other than quoted prices in active markets included within Level 1 that are either directly or indirectly observable at the reporting date for the asset or liability for substantially the full term of the asset or liability. Level 2 inputs include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.

Level 3 inputs are prices or valuation techniques for the asset or liability that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Unobservable inputs reflect the reporting entity's own assumptions about the assumptions that market participants would use in pricing the asset or liability (including assumptions about risk).

T he Registrants had no material financial instruments measured at fair value on a recurring basis at March 31, 2024 and December 31, 2023. The following table presents the carrying amount and fair value of the Registrants' financial instruments at March 31, 2024 and December 31, 2023, as well as the classification level within the fair value hierarchy.

|  | March 31, 2024 |  |  | December 31, 2023 |  |  |
(In millions) |  | Carrying Amount |  |  | Fair Value |  |  | Carrying Amount |  |  | Fair Value |  |  | Classification
Long-term Debt (including Long-term Debt due within one year): |  |  |  |  |  |  |  |  |  |  |  |  |  |
OGE Energy Term Loan |  | $ | 49.9 |  |  | $ | 50.0 |  |  | $ | 49.9 |  |  | $ | 50.0 |  |  | Level 2
OG&E Senior Notes |  | $ | 4,146.8 |  |  | $ | 3,868.5 |  |  | $ | 4,146.0 |  |  | $ | 3,922.3 |  |  | Level 2
OG&E Industrial Authority Bonds |  | $ | 135.4 |  |  | $ | 135.4 |  |  | $ | 135.4 |  |  | $ | 135.4 |  |  | Level 2
OG&E Tinker Debt |  | $ | 9.2 |  |  | $ | 7.0 |  |  | $ | 9.2 |  |  | $ | 7.1 |  |  | Level 3

18

5. Stock-Based Compensation

The following table presents the Registrants' pre-tax compensation expense and related income tax benefit for the three months ended March 31, 2024 and 2023 related to performance units and restricted stock units for the Registrants' employees.

|  | OGE Energy |  |  | OG&E |
|  | Three Months Ended |  |  | Three Months Ended |
|  | March 31, |  |  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Performance units |  | $ | 2.2 |  |  | $ | 2.2 |  |  | $ | 2.2 |  |  | $ | 0.5 |
Restricted stock units |  |  | 1.0 |  |  |  | 0.8 |  |  |  | 1.0 |  |  |  | 0.1 |
Total compensation expense |  | $ | 3.2 |  |  | $ | 3.0 |  |  | $ | 3.2 |  |  | $ | 0.6 |
Income tax benefit |  | $ | 0.8 |  |  | $ | 0.7 |  |  | $ | 0.8 |  |  | $ | 0.1 |

During the three months ended March 31, 2024, OGE Energ y issued 255,578 share s of new common stock pursuant to OGE Energy's Stock Incentive Plan to satisfy payouts of earned performance units and restricted stock unit grants to the Registrants' employees.

During the three months ended March 31, 2024, OGE Energy granted 275,499 performance units (based on total shareholder return over a three-year period) and 148,345 restricted stock units (three-year cliff vesting period) to the Registrants' employees at $35.86 and $32.74 fair value per share, respectively. As a result of OGE Energy's exit of its former midstream business and becoming primarily an electric company, all employees are directly employed by OG&E beginning in 2024.

6. Income Taxes

OGE Energy files consolidated income tax returns in the U.S. federal jurisdiction and various state jurisdictions. OG&E is a part of the consolidated income tax return of OGE Energy. With few exceptions, the Registrants are no longer subject to U.S. federal tax or state and local examinations by tax authorities for years prior to 2020. Income taxes are generally allocated to each company in the affiliated group, including OG&E, based on its stand-alone taxable income or loss. Federal investment tax credits previously claimed on electric utility property have been deferred and will be amortized to income over the life of the related property. Oklahoma investment tax credits are also earned on investments at electric generating facilities which further reduce OG&E's effective tax rate.

7. Common Equity

Automatic Dividend Reinvestment and Stock Purchase Plan

OGE Energy issued 4,900 new shares of common stock under its Automatic Dividend Reinvestment and Stock Purchase Plan during the three months ended March 31, 2024 and received proceeds of $0.2 million. OGE Energy may, from time to time, issue additional shares under its Automatic Dividend Reinvestment and Stock Purchase Plan to fund capital requirements or working capital needs. As of March 31, 2024, there were 4,797,244 shares of unissued common stock reserved for issuance under OGE Energy's Automatic Dividend Reinvestment and Stock Purchase Plan.

Earnings Per Share

Basic earnings per share is calculated by dividing net income attributable to OGE Energy by the weighted-average number of OGE Energy's common shares outstanding during the period. In the calculation of diluted earnings per share, weighted-average shares outstanding are increased for additional shares that would be outstanding if potentially dilutive securities were converted to common stock. Potentially dilutive securities for OGE Energy consist of performance units and restricted stock units. The following table presents the calculation of basic and diluted earnings per share for OGE Energy.

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|  | Three Months Ended |
|  | March 31, |
(In millions, except per share data) |  | 2024 |  |  | 2023 |
Net income |  | $ | 18.6 |  |  | $ | 38.3 |
Average common shares outstanding: |  |  |  |  |  |
Basic average common shares outstanding |  |  | 200.4 |  |  |  | 200.2 |
Effect of dilutive securities: |  |  |  |  |  |
Contingently issuable shares (performance and restricted stock units) |  |  | 0.2 |  |  |  | 0.6 |
Diluted average common shares outstanding |  |  | 200.6 |  |  |  | 200.8 |
Basic earnings per average common share |  | $ | 0.09 |  |  | $ | 0.19 |
Diluted earnings per average common share |  | $ | 0.09 |  |  | $ | 0.19 |
Anti-dilutive shares excluded from earnings per share calculation |  |  | — |  |  |  | — |

8. Long-Term Debt

At March 31, 2024, the Registrants were in compliance with all of their debt agreements.

OGE Energy has a $100.0 million floating rate unsecured three-year credit agreement, of which $50.0 million is considered a revolving loan and $50.0 million is considered a term loan. During the three months ended March 31, 2024, the interest rate for the $50.0 million drawn on the term loan under this credit agreement was 6.375 percent. For additional information related to this credit agreement, see Note 9.

OG&E Industrial Authority Bonds

OG&E has tax-exempt pollution control bonds with optional redemption provisions that allow the holders to request repayment of the bonds on any business day. The following table presents information about these bonds, which can be tendered at the option of the holder during the next 12 months.

Series |  | Date Due |  | Amount |
|  |  |  |  |  |  |  | (In millions) |
2.15% |  | - |  | 4.85% |  | Garfield Industrial Authority, January 1, 2025 |  | $ | 47.0 |
1.90% |  | - |  | 4.75% |  | Muskogee Industrial Authority, January 1, 2025 |  |  | 32.4 |
2.15% |  | - |  | 4.85% |  | Muskogee Industrial Authority, June 1, 2027 |  |  | 56.0 |
Total (redeemable during next 12 months) |  | $ | 135.4 |

All of these bonds are subject to an optional tender at the request of the holders, at 100 percent of the principal amount, together with accrued and unpaid interest to the date of purchase. The bond holders, on any business day, can request repayment of the bond by delivering an irrevocable notice to the tender agent stating the principal amount of the bond, payment instructions for the purchase price and the business day the bond is to be purchased. The repayment option may only be exercised by the holder of a bond for the principal amount. When a tender notice has been received by the trustee, a third-party remarketing agent for the bonds will attempt to remarket any bonds tendered for purchase. This process occurs once per week. Since the original issuance of these series of bonds in 1995 and 1997, the remarketing agent has successfully remarketed all tendered bonds. If the remarketing agent is unable to remarket any such bonds, OG&E is obligated to repurchase such unremarketed bonds. As OG&E has both the intent and ability to refinance the bonds on a long-term basis and such ability is supported by an ability to consummate the refinancing, the bonds are classified as Long-Term Debt or Long-Term Debt Due within One Year, as appropriate, in the condensed balance sheets. OG&E believes that it has sufficient liquidity to meet these obligations.

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9. Short-Term Debt and Credit Facilities

The Registrants borrow on a short-term basis, as necessary, by the issuance of commercial paper and by borrowings under their revolving credit agreements. OGE Energy also borrows under term credit agreements maturing in one year or less, as necessary. The following table presents information regarding the Registrants' revolving credit agreements at March 31, 2024.

Entity |  | Aggregate Commitment |  |  | Amount Outstanding (A) |  |  | Weighted-Average Interest Rate |  |  |  |  | Expiration
|  | (In millions) |  |  |  |  |  |  |  |
OGE Energy (B) |  | $ | 550.0 |  |  | $ | 516.6 |  |  |  | 5.68 | % |  | (F) |  | December 18, 2028
OGE Energy (C) |  |  | 50.0 |  |  |  | — |  |  |  | — | % |  | (F) |  | May 24, 2025
OG&E (D)(E) |  |  | 550.0 |  |  |  | 239.5 |  |  |  | 5.64 | % |  | (F) |  | December 18, 2028
Total |  | $ | 1,150.0 |  |  | $ | 756.1 |  |  |  | 5.68 | % |  |  |  |

(A)
Includes direct borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit at March 31, 2024.
(B)
This bank facility is available to back up OGE Energy's commercial paper borrowings and to provide revolving credit borrowings. This bank facility can also be used as a letter of credit facility.
(C)
OGE Energy has a $100.0 million floating rate unsecured three-year credit agreement, of which $50.0 million is considered a revolving loan and $50.0 million is considered a term loan. The credit agreement, under certain circumstances, may be increased to a maximum commitment limit of $135.0 million and includes a maximum leverage ratio of 0.65 to 1.0. The other covenants under this credit agreement are substantially the same as OGE Energy's existing $550.0 million revolving credit agreement.
(D)
This bank facility is available to back up OG&E's commercial paper borrowings and to provide revolving credit borrowings. This bank facility can also be used as a letter of credit facility.
(E)
OG&E has an intercompany borrowing agreement with OGE Energy whereby OG&E has access to up to $450.0 million of OGE Energy's revolving credit amount. This agreement has a termination date of December 18, 2028. At March 31, 2024, there was $192.5 million in intercompany borrowings under this agreement.
(F)
Represents the weighted-average interest rate for the outstanding borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit.

The Registrants' ability to access the commercial paper market could be adversely impacted by a credit ratings downgrade or major market disruptions. Pricing grids associated with the Registrants' credit facilities could cause annual fees and borrowing rates to increase if an adverse rating impact occurs. The impact of any future downgrade could include an increase in the costs of the Registrants' short-term borrowings, but a reduction in the Registrants' credit ratings would not result in any defaults or accelerations. Any future downgrade could also lead to higher long-term borrowing costs and, if below investment grade, would require the Registrants to post collateral or letters of credit.

OG&E must obtain regulatory approval from the FERC in order to borrow on a short-term basis. OG&E has the necessary regulatory approvals to incur up to $1.0 billion in short-term borrowings at any one time for a two-year period beginning January 1, 2023 and ending December 31, 2024.

10. Retirement Plans and Postretirement Benefit Plans

Net Periodic Benefit Cost

The following tables present the net periodic benefit cost components, before consideration of capitalized amounts, of OGE Energy's Pension Plan, Restoration of Retirement Income Plan and postretirement benefit plans that are included in the condensed financial statements. Service cost is presented within Other Operation and Maintenance Expense, and the remaining net periodic benefit cost components as listed in the following tables are presented within Other Net Periodic Benefit Income in the statements of income. OG&E recovers specific amounts of pension and postretirement medical costs in rates approved in its Oklahoma rate reviews. In accordance with approved orders, OG&E defers the difference between actual pension and postretirement medical expenses and the amount approved in its last Oklahoma rate review as a regulatory asset or regulatory liability. These amounts have been recorded

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in the Pension tracker in the regulatory assets and liabilities table in Note 1 and within Other Net Periodic Benefit Income in the statements of income.

|  | Pension Plan |  |  | Restoration of Retirement Income Plan |
|  | Three Months Ended |  |  | Three Months Ended |
OGE Energy |  | March 31, |  |  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Service cost |  | $ | 1.4 |  |  | $ | 1.4 |  |  | $ | 0.2 |  |  | $ | 0.3 |
Int erest cost |  |  | 3.8 |  |  |  | 4.0 |  |  |  | 0.1 |  |  |  | — |
Ex pected return on plan assets |  |  | (3.7 | ) |  |  | (4.0 | ) |  |  | — |  |  |  | — |
Amor tization of net loss |  |  | 1.7 |  |  |  | 2.2 |  |  |  | — |  |  |  | — |
Amortization of unrecognized prior service cost (A) |  |  | — |  |  |  | — |  |  |  | 0.1 |  |  |  | 0.1 |
Settlement cost |  |  | — |  |  |  | 18.2 |  |  |  | — |  |  |  | — |
Net periodic benefit cost |  | $ | 3.2 |  |  | $ | 21.8 |  |  | $ | 0.4 |  |  | $ | 0.4 |

(A)
Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment.

|  | Pension Plan |  |  | Restoration of Retirement Income Plan |
|  | Three Months Ended |  |  | Three Months Ended |
OG&E |  | March 31, |  |  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Service cost |  | $ | 1.4 |  |  | $ | 1.1 |  |  | $ | — |  |  | $ | — |
Int erest cost |  |  | 3.3 |  |  |  | 3.1 |  |  |  | — |  |  |  | — |
Expe cted return on plan assets |  |  | (3.2 | ) |  |  | (3.2 | ) |  |  | — |  |  |  | — |
Amorti zation of ne t loss |  |  | 1.6 |  |  |  | 1.9 |  |  |  | — |  |  |  | — |
Settlement cost |  |  | — |  |  |  | 17.2 |  |  |  | — |  |  |  | — |
Total net periodic benefit cost |  |  | 3.1 |  |  |  | 20.1 |  |  |  | — |  |  |  | — |
Plus: Amount allocated from OGE Energy |  |  | — |  |  |  | 1.6 |  |  |  | 0.4 |  |  |  | 0.4 |
Net periodic benefit cost |  | $ | 3.1 |  |  | $ | 21.7 |  |  | $ | 0.4 |  |  | $ | 0.4 |

In addition to the net periodic benefit cost amounts recognized, as presented in the tables above, for the Pension and Restoration of Retirement Income Plans during the three months ended March 31, 2024 and 2023, the Registrants recognized the following:

|  | Three Months Ended |
|  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |
Change in pension expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A) |  | $ | 3.3 |  |  | $ | 20.2 |
Deferral of pension expense related to pension settlement charges included in the above line item: |  |  |  |  |  |
Oklahoma jurisdiction (A) |  | $ | — |  |  | $ | 16.7 |
Arkansas jurisdiction (A) |  | $ | — |  |  | $ | 1.5 |

(A)
Included in the pension regulatory asset in each jurisdiction, as indicated in the regulatory assets and liabilities table in Note 1.

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|  | OGE Energy |  |  | OG&E |
|  | Postretirement Benefit Plans |  |  | Postretirement Benefit Plans |
|  | Three Months Ended |  |  | Three Months Ended |
|  | March 31, |  |  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Service cost |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 1.3 |  |  |  | 1.3 |  |  |  | 1.0 |  |  |  | 1.0 |
Expected return on plan assets |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | (0.4 | )
Amortization of net gain |  |  | (0.1 | ) |  |  | (0.1 | ) |  |  | — |  |  |  | — |
Total net periodic benefit cost |  |  | 0.8 |  |  |  | 0.8 |  |  |  | 0.6 |  |  |  | 0.6 |
Plus: Amount allocated from OGE Energy |  |  | — |  |  |  | — |  |  |  | 0.1 |  |  |  | 0.1 |
Net periodic benefit cost |  | $ | 0.8 |  |  | $ | 0.8 |  |  | $ | 0.7 |  |  | $ | 0.7 |

In addition to the net periodic benefit cost amounts recognized, as presented in the table above, for the postretirement benefit plans during the three months ended March 31, 2024 and 2023, the Registrants recognized the following:

|  | Three Months Ended |
|  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |
Change in postretirement expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A) |  | $ | 1.1 |  |  | $ | 1.1 |

(A)
Included in the pension regulatory asset, as indicated in the regulatory assets and liabilities table in Note 1.

The following table presents the amount of net periodic benefit cost capitalized and attributable to each of the Registrants for OGE Energy's Pension Plan and postretirement benefit plans for the three months ended March 31, 2024 and 2023.

|  | OGE Energy |  |  | OG&E |
|  | Three Months Ended |  |  | Three Months Ended |
|  | March 31, |  |  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Capitalized portion of net periodic pension benefit cost |  | $ | — |  |  | $ | 0.6 |  |  | $ | 0.6 |  |  | $ | 0.5 |
Capitalized portion of net periodic postretirement benefit cost |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

Pension Plan Funding

In February 2024, OGE Energy made a $10.0 million contribution to its Pension Plan related to OG&E employees and has not determined whether it will need to make any additional contributions to the Pension Plan in 2024. The Registrants could be required to make additional contributions if the value of its pension trust and postretirement benefit plan trust assets are adversely impacted by a major market disruption in the future.

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11. Report of Business Segments

OGE Energy reports its operations primarily through a single segment, captioned "electric company," which is engaged in the generation, transmission, distribution and sale of electric energy. The "other operations" caption primarily includes the operations of the holding company and other energy-related investments. Intersegment revenues are recorded at prices comparable to those of unaffiliated customers and are affected by regulatory considerations. The following tables present the results of OGE Energy's business segments for the three months ended March 31, 2024 and 2023.

Three Months Ended March 31, 2024 |  | Electric Company |  |  | Other Operations |  |  | Eliminations |  |  | Total |
(In millions) |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 596.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 596.8 |
Fuel, purchased power and direct transmission expense |  |  | 232.2 |  |  |  | — |  |  |  | — |  |  |  | 232.2 |
Other operation and maintenance |  |  | 132.4 |  |  |  | — |  |  |  | — |  |  |  | 132.4 |
Depreciation and amortization |  |  | 129.2 |  |  |  | — |  |  |  | — |  |  |  | 129.2 |
Taxes other than income |  |  | 29.0 |  |  |  | — |  |  |  | — |  |  |  | 29.0 |
Operating income |  |  | 74.0 |  |  |  | — |  |  |  | — |  |  |  | 74.0 |
Other income |  |  | 6.6 |  |  |  | 1.5 |  |  |  | (1.7 | ) |  |  | 6.4 |
Interest expense |  |  | 51.4 |  |  |  | 10.5 |  |  |  | (1.7 | ) |  |  | 60.2 |
Income tax expense (benefit) |  |  | 4.0 |  |  |  | (2.4 | ) |  |  | — |  |  |  | 1.6 |
Net income (loss) |  | $ | 25.2 |  |  | $ | (6.6 | ) |  | $ | — |  |  | $ | 18.6 |
Total assets |  | $ | 12,771.1 |  |  | $ | 375.1 |  |  | $ | (228.2 | ) |  | $ | 12,918.0 |

Three Months Ended March 31, 2023 |  | Electric Company |  |  | Other Operations |  |  | Eliminations |  |  | Total |
(In millions) |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  | $ | 557.2 |  |  | $ | — |  |  | $ | — |  |  | $ | 557.2 |
Fuel, purchased power and direct transmission expense |  |  | 200.6 |  |  |  | — |  |  |  | — |  |  |  | 200.6 |
Other operation and maintenance |  |  | 131.5 |  |  |  | (1.1 | ) |  |  | — |  |  |  | 130.4 |
Depreciation and amortization |  |  | 121.2 |  |  |  | — |  |  |  | — |  |  |  | 121.2 |
Taxes other than income |  |  | 27.1 |  |  |  | 1.4 |  |  |  | — |  |  |  | 28.5 |
Operating income (loss) |  |  | 76.8 |  |  |  | (0.3 | ) |  |  | — |  |  |  | 76.5 |
Other income |  |  | 15.3 |  |  |  | 4.5 |  |  |  | (3.4 | ) |  |  | 16.4 |
Interest expense |  |  | 45.7 |  |  |  | 5.5 |  |  |  | (3.4 | ) |  |  | 47.8 |
Income tax expense |  |  | 6.6 |  |  |  | 0.2 |  |  |  | — |  |  |  | 6.8 |
Net income (loss) |  | $ | 39.8 |  |  | $ | (1.5 | ) |  | $ | — |  |  | $ | 38.3 |
Total assets |  | $ | 12,762.7 |  |  | $ | 587.1 |  |  | $ | (559.5 | ) |  | $ | 12,790.3 |

12. Commitments and Contingencies

Except as set forth below, in Note 13 and under "Environmental Laws and Regulations" in Item 2 of Part I and in Item 1 of Part II of this Form 10-Q, the circumstances set forth in Notes 13 and 14 to the financial statements included in the Registrants' 2023 Form 10-K appropriately represent, in all material respects, the current status of the Registrants' material commitments and contingent liabilities.

Environmental Laws and Regulations

The activities of OG&E are subject to numerous stringent and complex federal, state and local laws and regulations governing environmental protection. These laws and regulations can change, restrict or otherwise impact the Registrants' business activities in many ways, including the handling or disposal of waste material, planning for future construction activities to avoid or mitigate harm to threatened or endangered species and requiring the installation and operation of emissions or pollution control equipment. Failure to comply with these laws and regulations could result in the assessment of administrative, civil and criminal penalties, the imposition of remedial requirements and the issuance of orders enjoining future operations. Management believes that all of the Registrants' operations are in substantial compliance with current federal, state and local environmental standards.

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Environmental regulation can increase the cost of planning, design, initial installation and operation of OG&E's facilities. Management continues to evaluate its compliance with existing and proposed environmental legislation and regulations and implement appropriate environmental programs in a competitive market.

Other

In the normal course of business, the Registrants are confronted with issues or events that may result in a contingent liability. These generally relate to lawsuits or claims made by third parties, including governmental agencies. When appropriate, management consults with legal counsel and other experts to assess the claim. If, in management's opinion, the Registrants have incurred a probable loss as set forth by GAAP, an estimate is made of the loss, and the appropriate accounting entries are reflected in the condensed financial statements. If the assessment indicates that a potential loss is not probable but reasonably possible, the nature of the contingent matter, together with an estimate of the range of possible loss if determinable and material, would be disclosed. At the present time, based on currently available information, except as disclosed below, the Registrants believe that any reasonably possible losses in excess of accrued amounts arising out of pending or threatened lawsuits or claims would not be quantitatively material to their condensed financial statements and would not have a material adverse effect on their financial position, results of operations or cash flows.

In July 2023, OG&E was named, along with its contractor, as a defendant in a lawsuit filed by an apartment owner and its insurance companies seeking in excess of $60.0 million in damages related to a fire at an apartment building under construction in Oklahoma City. Several additional defendants have also been named. OG&E disputes the claims in the lawsuit and intends to vigorously defend this action. If OG&E was ultimately deemed liable for damages in connection with this incident, OG&E believes its existing insurance policies will cover its costs, in excess of a required retention (the amount of which is not material), to satisfy any liability it may have. Due to the uncertain and preliminary nature of this litigation, the outcome cannot be predicted, and OG&E is unable to provide a range of possible loss in this matter.

13. Rate Matters and Regulation

Except as disclosed below, the circumstances set forth in Note 14 to the financial statements included in the Registrants' 2023 Form 10-K appropriately represent, in all material respects, the current status of the Registrants' regulatory matters.

Completed Regulatory Matters

Integrated Resource Plans

OG&E has conducted technical conferences for stakeholder engagement on its draft triennial IRP and, on March 29, 2024, issued its final 2024 IRP to the OCC and APSC. This 2024 IRP identified capacity needs of 556, 431 and 1,096 MWs in 2026, 2027 and 2028, respectively. The IRP assumes that Horseshoe Lake unit 7 will be retired in 2024, Tinker units 5A and 5B will be retired in 2025, and Horseshoe Lake unit 8 will be retired in 2027. The IRP also provides that OG&E will issue requests for proposals, beginning in the second quarter of 2024, for resources to meet the capacity needs identified in the IRP while maintaining affordability and reliability for OG&E’s customers.

APSC Proceedings

2023 Formula Rate Plan Filing

In October 2023, OG&E filed its final evaluation report under its Formula Rate Plan, and on January 30, 2024, OG&E and the APSC Staff filed an uncontested joint settlement agreement, which included an annual electric revenue increase of $3.5 million. On March 7, 2024, the APSC issued a final order approving the uncontested settlement agreement, and new rates became effective April 1, 2024.

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OCC Proceedings

2022 Oklahoma Fuel Prudency

In June 2023, the Public Utility Division Staff filed their application initiating the review of the 2022 fuel adjustment clause and prudence review. The OCC issued an order on April 11, 2024 finding that OG&E's 2022 fuel costs and generation operations were prudent.

Pending Regulatory Matters

Various proceedings pending before state or federal regulatory agencies are described below. Unless stated otherwise, the Registrants cannot predict when the regulatory agency will act or what action the regulatory agency will take. The Registrants' financial results are dependent in part on timely and constructive decisions by the regulatory agencies that set OG&E's rates.

APSC Proceedings

Capacity Power Purchase Agreement Cost Recovery

On October 4, 2023, OG&E filed an application at the APSC seeking approval of a methodology for recovery of capacity costs associated with short-term power purchase agreements entered into to meet capacity needs in each of the years between 2023 and 2027. On December 29, 2023, the Administrative Law Judge issued an order authorizing OG&E to defer to a regulatory asset its capacity costs associated with short-term power purchase agreements for 2023, along with a carrying charge at the commission-approved customer deposit interest rate. The order requires OG&E and the parties to address treatment for any expenses beyond the calendar year 2023. The parties have agreed to a procedural schedule that involves additional rounds of testimony and a hearing in August 2024.

Arkansas 2024 Generation Construction Notice Filing

On January 19, 2024, OG&E filed an application seeking APSC approval to begin construction of 96 megawatts of combustion turbines at Tinker Air Force Base. A public hearing is scheduled for June 25, 2024, and a decision is expected by the end of August 2024.

FERC Proceedings

Order for Sponsored Transmission Upgrades within SPP

Under Attachment Z2 of the SPP Open Access Transmission Tariff, costs of participant-funded, or "sponsored," transmission upgrades may be recovered from other SPP customers whose transmission service depends on capacity enabled by the upgrade. The SPP Tariff required the SPP to charge for these upgrades beginning in 2008, but the SPP did not begin charging its customers for these upgrades until 2016 due to information system limitations. At that time, the SPP sought a waiver of a time limitation in its tariff that otherwise would have prevented it from waiting until 2016 to bill for the 2008 through 2015 period. The FERC granted the waiver, and the SPP then billed OG&E as a user for these Z2 charges while simultaneously crediting OG&E as a sponsor of Z2 transmission upgrades, resulting in OG&E being a net recipient of sponsored upgrade credits. The majority of these net credits were refunded to customers through OG&E's various rate riders that include SPP activity with the remaining amounts retained by OG&E.

Several companies that were net payers of Z2 charges sought rehearing of the FERC's 2016 order approving the waiver and then appealed it. While that appeal was pending, the FERC obtained a remand and then reversed itself and ruled that the SPP tariff provision that prohibited the 2008 through 2015 charges could not be waived. It ordered the SPP to develop a plan to refund the payments but not to implement the refunds until further ordered to do so. In response, in April 2019, OG&E filed a request for rehearing at the FERC. The next month, it also filed a Complaint at the FERC against the SPP contending that the SPP and not OG&E should bear the cost of any refunds resulting from the SPP's tariff violation and that SPP’s actions also violated its contracts with OG&E. In February 2020, the FERC denied OG&E's request for rehearing but did not consider SPP's refund plan. No date for payment of refunds was established. In August 2021, the U.S. Court of Appeals for the District of Columbia Circuit denied OG&E's petition for review of the FERC's order denying the waiver and requiring refunds. After denying rehearing of its ruling, the court of appeals returned the matter in November 2021 to the FERC for further proceedings in accordance with its opinion. The FERC has not acted on that remand.

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If the FERC proceeds to order refunds in full, OG&E estimates it would be required to refund $13.0 million, which is net of amounts paid to other utilities for upgrades and would be subject to interest at the FERC-approved rate. The SPP has stated in filings with the FERC both before and after the court of appeals decision that there are considerable complexities in implementing the refunds that will have to be resolved before they can be paid. Payment of refunds would shift recovery of these upgrade credits to future periods. The SPP filed a report on January 4, 2022 confirming that administering refunds would be complex and could take years unless the SPP is allowed to make certain simplifying assumptions. The SPP also urged that all pending complaint proceedings, including OG&E's complaint and three similar complaints against the SPP, be resolved before any refund process is ordered to begin. OG&E and other parties filed responses to the SPP report, and the matter remains pending at the FERC. Of the $13.0 million, the Registrants would be impacted by $5.0 million in expense that initially benefited the Registrants in 2016, and OG&E customers would incur a net impact of $8.0 million in expense through rider mechanisms or the FERC formula rate. As of March 31, 2024, the Registrants have reserved $13.0 million plus estimated interest for a potential refund.

In November 2022, the FERC issued an order denying OG&E's complaint against the SPP. It also issued orders granting the other three complaints against the SPP in part but awarded no relief. All four complainants timely sought rehearing of these orders. On June 27, 2023, the FERC made final its orders granting in part complaints filed against the SPP by OG&E and three other project sponsors (or groups thereof) on claims arising from the SPP’s failure to implement Attachment Z2 so that project sponsors could be paid as required under the tariff, but awarding no relief. OG&E and the other complainants have appealed to the U.S. Court of Appeals for the Eighth Circuit, where the matter was briefed and oral arguments were heard on March 14, 2024. It will likely be decided in the summer of 2024.

In June 2020, the FERC approved, effective July 1, 2020, an SPP proposal to eliminate Attachment Z2 revenue crediting and replace it with a different rate mechanism that would provide project sponsors, such as OG&E, the same level of recovery. This elimination of the Attachment Z2 revenue crediting would only prospectively impact OG&E and its recovery of any future upgrade costs that it may incur as a project sponsor subsequent to July 2020. All of the existing projects that are eligible to receive revenue credits under Attachment Z2 will remain eligible, which includes the $13.0 million that is at issue in the remand from OG&E's appeal and in OG&E's complaint proceeding.

OCC Proceedings

Oklahoma Retail Electric Supplier Certified Territory Act Causes

As previously disclosed, several rural electric cooperative electricity suppliers filed complaints with the OCC alleging that OG&E, because it was providing service to large loads in another supplier's territory, had violated the Oklahoma Retail Electric Supplier Certified Territory Act. OG&E believes it is lawfully serving customers under specific exemptions under this act that allow it to serve customers having a load of one megawatt or greater. There were five complaint cases initiated at the OCC, and the OCC issued decisions on each of them. The OCC ruled in favor of the electric cooperatives in three of those cases under statutory interpretation and ruled in favor of OG&E in two of those cases under injunctive theory. All five of those cases were appealed to the Oklahoma Supreme Court.

On April 4, 2023, the Oklahoma Supreme Court issued its opinion which vacated the OCC's injunctions with respect to four of the cases and held that the Oklahoma Retail Electric Supplier Certified Territory Act does not limit the mechanism by which OG&E may provide service to large loads in another supplier's territory pursuant to the one megawatt exception. The one pending legal issue left for the Oklahoma Supreme Court to resolve is a statutory interpretation on how a supplier calculates "connected load for initial full operation" for purposes of the exemption under the act. If the Oklahoma Supreme Court ultimately were to find that the customers being served in this single case are not exempted from the Oklahoma Retail Electric Supplier Certified Territory Act, OG&E would have to evaluate the recoverability of some plant investments made to serve these customers and may also be required to reimburse the certified territory supplier in this case for an amount of lost revenue. Such amounts would not be expected to be material to the Registrants' results of operations.

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2023 Oklahoma General Rate Review

On December 29, 2023, OG&E filed a general rate review in Oklahoma seeking a rate increase of $332.5 million and a 10.5 percent return on equity based on a common equity percentage of 53.50 percent. The rate review seeks recovery of $1.3 billion of net capital investment since the last general rate review. A hearing on the merits is scheduled for June 17, 2024.

SPP Proceedings

Resource Capacity Accreditation

In July 2022, the SPP Board of Directors approved a new unit accreditation methodology for conventional generation which requires submittal to and approval from the FERC prior to becoming effective. On March 2, 2023, the FERC rejected the SPP’s proposed capacity accreditation methodology for wind and solar generators. Following the FERC’s rejection, the SPP began an extensive review of both the methodology proposed for thermal resources which had not yet been submitted to the FERC, and the accreditation methodology for wind and solar generators. These methodologies were reviewed and approved by both the Regional State Committee and the SPP Board of Directors in late October 2023 and were submitted to the FERC for approval on February 23, 2024. If approved by the FERC, both methodologies are expected to be effective in 2026 and may contribute to OG&E’s incremental capacity needs.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.

The following combined discussion is separately filed by OGE Energy and OG&E. However, OG&E does not make any representations as to information related solely to OGE Energy or the subsidiaries of OGE Energy other than itself.

Introduction and Overview

OGE Energy is a holding company whose primary investment provides electricity in Oklahoma and western Arkansas. OGE Energy's electric company operations are conducted through its wholly-owned subsidiary, OG&E, which generates, transmits, distributes and sells electric energy in Oklahoma and western Arkansas and are reported through OGE Energy's electric company business segment. OG&E's rates are subject to regulation by the OCC, the APSC and the FERC. OG&E was incorporated in 1902 under the laws of the Oklahoma Territory and is the largest electric company in Oklahoma, with a franchised service territory that includes Fort Smith, Arkansas and the surrounding communities. OG&E sold its retail natural gas business in 1928 and is no longer engaged in the natural gas distribution business.

The accounts of OGE Energy and its wholly-owned subsidiaries, including OG&E, are included in OGE Energy's condensed consolidated financial statements. All intercompany transactions and balances are eliminated in such consolidation.

OGE Energy's purpose is to energize life, providing life-sustaining and life-enhancing products and services that enrich its communities and encourage growth and a higher quality of life. OGE Energy's purpose comes with a balanced approach to multifaceted stewardship: keeping its employees (internally referred to as "members") safe, reducing its environmental impact, strengthening its diverse communities and ensuring its effective corporate governance. OGE Energy's business model is centered around growth and sustainability for members, communities and customers and the owners of OGE Energy, its shareholders. OGE Energy is focused on creating long-term shareholder value by targeting the consistent growth of consolidated earnings per share of five to seven percent, supported by strong load growth enabled by low customer rates and a strategy of investing in lower risk infrastructure projects that improve the economic vitality of the communities it serves in Oklahoma and Arkansas. OGE Energy's long-term sustainability is predicated on providing exceptional customer experiences, investing in grid improvements and investments related to new generation capacity needs, environmental stewardship, strong governance practices and caring for and supporting its members and communities. Further discussion of OGE Energy's strategy can be found in its 2023 Form 10-K.

Recent Developments

OG&E's Regulatory Matters

Completed regulatory matters affecting current period results are discussed in Note 13 within "Item 1. Financial Statements." OG&E filed an Oklahoma general rate review in December 2023 and submitted its final 2024 IRP for Oklahoma and Arkansas in March 2024.

Summary of OGE Energy Operating Results

Three Months Ended March 31, 2024 as compared to the Three Months Ended March 31, 2023

OGE Energy's net income was $18.6 million, or $0.09 per diluted share, during the three months ended March 31, 2024 as compared to $38.3 million, or $0.19 per diluted share, during the same period in 2023. The decrease in net income of $19.7 million, or $0.10 per diluted share, is further discussed below.

•
A decrease in net income at OG&E of $14.6 million, or $0.08 per diluted share of OGE Energy's common stock, was primarily due to lower net other income, higher depreciation and amortization expense as a result of additional assets being placed into service and higher interest expense related to the senior notes issuance in April 2023, partially offset by higher operating revenues (excluding the impact of recoverable fuel, purchased power and direct transmission expense not impacting earnings), which was driven by load growth, and lower income tax expense.
•
An increase in net loss of other operations (holding company) of $5.1 million, or $0.02 per diluted share of OGE Energy's common stock, was primarily due to higher interest expense driven by increased short-term debt outstanding and lower net other income, partially offset by lower income tax expense.

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2 024 Outlook

OGE Energy's 2024 consolidated earnings guidance remains unchanged and is projected to be between $415 million to $439 million, or $2.06 to $2.18 per average diluted share, with a midpoint of $427 million, or $2.12 per average diluted share. OG&E is projected to earn approximately $447 million, or $2.22 per average diluted share. A loss of $20 million, or approximately $0.10 per average diluted share, is projected for other operations (primarily the holding company). The guidance assumes, among other things, approximately 201.5 million average diluted shares outstanding and normal weather for the remainder of the year. OG&E has significant seasonality in its earnings due to weather on a year over year basis. See OGE Energy's 2023 Form 10-K for other key factors and assumptions underlying its 2024 guidance.

Results of Operations

The following discussion and analysis presents factors that affected the Registrants' results of operations for the three months ended March 31, 2024 as compared to the same period in 2023 and the Registrants' financial position at March 31, 2024. Due to seasonal fluctuations and other factors, the Registrants' operating results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or for any future period. The following information should be read in conjunction with the condensed financial statements and notes thereto. Known trends and contingencies of a material nature are discussed to the extent considered relevant.

|  | Three Months Ended |
OGE Energy |  | March 31, |
(In millions, except per share data) |  | 2024 |  |  | 2023 |
Net income |  | $ | 18.6 |  |  | $ | 38.3 |
Basic average common shares outstanding |  |  | 200.4 |  |  |  | 200.2 |
Diluted average common shares outstanding |  |  | 200.6 |  |  |  | 200.8 |
Basic earnings per average common share |  | $ | 0.09 |  |  | $ | 0.19 |
Diluted earnings per average common share |  | $ | 0.09 |  |  | $ | 0.19 |
Dividends declared per common share |  | $ | 0.4182 |  |  | $ | 0.4141 |

Results by Business Segment

|  | Three Months Ended |
|  | March 31, |
(In millions) |  | 2024 |  |  | 2023 |
Net income (loss): |  |  |  |  |  |
OG&E (Electric Company) |  | $ | 25.2 |  |  | $ | 39.8 |
Other operations (A) |  |  | (6.6 | ) |  |  | (1.5 | )
OGE Energy net income |  | $ | 18.6 |  |  | $ | 38.3 |

(A)
Other operations primarily includes the operations of the holding company, other energy-related investments and consolidating eliminations.

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The following discussion of results of operations for OG&E includes intercompany transactions that are eliminated in OGE Energy's condensed consolidated financial statements.

OG&E (Electric Company)

|  | Three Months Ended |
|  | March 31, |
(Dollars in millions) |  | 2024 |  |  | 2023 |
Operating revenues |  | $ | 596.8 |  |  | $ | 557.2 |
Fuel, purchased power and direct transmission expense |  |  | 232.2 |  |  |  | 200.6 |
Other operation and maintenance |  |  | 132.4 |  |  |  | 131.5 |
Depreciation and amortization |  |  | 129.2 |  |  |  | 121.2 |
Taxes other than income |  |  | 29.0 |  |  |  | 27.1 |
Operating income |  |  | 74.0 |  |  |  | 76.8 |
Allowance for equity funds used during construction |  |  | 4.7 |  |  |  | 4.5 |
Other net periodic benefit income |  |  | 1.8 |  |  |  | 1.6 |
Other income |  |  | 2.0 |  |  |  | 10.1 |
Other expense |  |  | 1.9 |  |  |  | 0.9 |
Interest expense |  |  | 51.4 |  |  |  | 45.7 |
Income tax expense |  |  | 4.0 |  |  |  | 6.6 |
Net income |  | $ | 25.2 |  |  | $ | 39.8 |
Operating revenues by classification: |  |  |  |  |  |
Residential |  | $ | 228.1 |  |  | $ | 211.7 |
Commercial |  |  | 153.4 |  |  |  | 136.2 |
Industrial |  |  | 54.2 |  |  |  | 54.4 |
Oilfield |  |  | 50.1 |  |  |  | 48.4 |
Public authorities and street light |  |  | 52.3 |  |  |  | 46.2 |
System sales revenues |  |  | 538.1 |  |  |  | 496.9 |
Provision for tax refund |  |  | — |  |  |  | 1.4 |
Integrated market |  |  | 15.0 |  |  |  | 12.7 |
Transmission |  |  | 35.6 |  |  |  | 35.2 |
Other |  |  | 8.1 |  |  |  | 11.0 |
Total operating revenues |  | $ | 596.8 |  |  | $ | 557.2 |
MWh sales by classification (In millions) |  |  |  |  |  |
Residential |  |  | 2.3 |  |  |  | 2.2 |
Commercial |  |  | 2.1 |  |  |  | 1.9 |
Industrial |  |  | 1.0 |  |  |  | 1.0 |
Oilfield |  |  | 1.1 |  |  |  | 1.1 |
Public authorities and street light |  |  | 0.7 |  |  |  | 0.7 |
System sales |  |  | 7.2 |  |  |  | 6.9 |
Integrated market |  |  | 0.2 |  |  |  | 0.1 |
Total sales |  |  | 7.4 |  |  |  | 7.0 |
Number of customers |  |  | 899,871 |  |  |  | 890,413 |
Weighted-average cost of energy per kilowatt-hour (In cents) |  |  |  |  |  |
Natural gas |  |  | 3.483 |  |  |  | 4.234 |
Coal |  |  | 3.100 |  |  |  | 3.380 |
Total fuel |  |  | 3.238 |  |  |  | 3.789 |
Total fuel and purchased power |  |  | 2.984 |  |  |  | 2.721 |
Degree days (A) |  |  |  |  |  |
Heating - Actual |  |  | 1,695 |  |  |  | 1,692 |
Heating - Normal |  |  | 1,887 |  |  |  | 1,887 |
Cooling - Actual |  |  | 12 |  |  |  | 6 |
Cooling - Normal |  |  | 10 |  |  |  | 10 |

(A)
Degree days are calculated as follows: The high and low degrees of a particular day are added together and then averaged. If the calculated average is above 65 degrees, then the difference between the calculated average and 65 is expressed as cooling degree

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days, with each degree of difference equaling one cooling degree day. If the calculated average is below 65 degrees, then the difference between the calculated average and 65 is expressed as heating degree days, with each degree of difference equaling one heating degree day. The daily calculations are then totaled for the particular reporting period. The calculation of heating and cooling degree normal days is based on a 30-year average and updated every ten years.

OG&E's net income decreased $14.6 million, or 36.7 percent, during the three months ended March 31, 2024 as compared to the same period in 2023. The following section discusses the primary drivers for the decrease in net income during the three months ended March 31, 2024, as compared to the same period in 2023.

Operating revenues increased $39.6 million, or 7.1 percent, primarily driven by the below factors.

(In millions) |  | $ Change |
Fuel, purchased power and direct transmission expense (A) |  | $ | 31.6 |
Non-residential demand and related revenues |  |  | 4.9 |
Quantity impacts (includes weather) |  |  | 3.1 |
New customer growth |  |  | 2.8 |
Price variance |  |  | 1.2 |
Wholesale transmission revenue |  |  | 0.4 |
Other |  |  | (0.6 | )
Industrial and oilfield sales |  |  | (1.6 | )
Guaranteed Flat Bill program (B) |  |  | (2.2 | )
Change in operating revenues |  | $ | 39.6 |

(A)
These expenses are generally recoverable from customers through regulatory mechanisms and are offset in Fuel, Purchased Power and Direct Transmission Expense in the statements of income. The primary drivers of the changes in fuel, purchased power and direct transmission expense during the period are further detailed in the table below.
(B)
The Guaranteed Flat Bill program allows qualifying customers the opportunity to purchase their electricity needs at a set monthly price for an entire year, which can result in variances when actual fuel and purchased power prices differ from what is included in Guaranteed Flat Bill program rates.

Fuel, purchased power and direct transmission expense for OG&E consists of fuel used in electric generation, purchased power and transmission related charges. As described above, the actual cost of fuel used in electric generation and certain purchased power costs are generally recoverable from OG&E's customers through fuel adjustment clauses. The fuel adjustment clauses are subject to periodic review by the OCC and the APSC. OG&E's fuel, purchased power and direct transmission expense increased $31.6 million, or 15.8 percent, primarily driven by the below factors.

(In millions) | $ Change |
Fuel expense (A) | $ | 12.3 |
Purchased power costs: |  |
Purchases from SPP (B) |  | 18.9 |
Wind |  | 0.5 |
Other |  | 0.3 |
Transmission expense |  | (0.4 | )
Change in fuel, purchased power and direct transmission expense | $ | 31.6 |

(A)
Increased primarily due to an increase in MWhs generated related to the generating assets utilized during the three months ended March 31, 2024.
(B)
Increased primarily due to higher market prices during the three months ended March 31, 2024.

Other operation and maintenance expense increased $0.9 million, or 0.7 percent, primarily due to an increase in various costs such as payroll and benefits, net of capitalized labor, partially offset by the timing of vegetation management activities.

Depreciation and amortization expense increased $8.0 million, or 6.6 percent, primarily due to additional assets being placed into service and increased amortization of the regulatory assets related to storms and deferred taxes.

Net other income decreased $8.7 million, or 56.9 percent, primarily due to the carrying charge for the higher fuel under recovery balance in 2023.

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Interest expense increased $5.7 million, or 12.5 percent, primarily due to higher interest on long-term debt driven by the $350.0 million senior notes issuance in April 2023 and OG&E's growing asset base.

Income tax expense decreased $2.6 million, or 39.4 percent, primarily related to lower pretax income and additional amortization of unfunded deferred taxes, partially offset by decreased state tax credit generation.

Liquidity and Capital Resources

Cash Flows

OGE Energy

|  | Three Months Ended |  |  |  |  |  |  |
|  | March 31, |  |  | 2024 vs. 2023 |
(Dollars in millions) |  | 2024 |  |  | 2023 |  |  | $ Change |  |  | % Change |
Net cash provided from operating activities (A) |  | $ | 83.0 |  |  | $ | 172.3 |  |  | $ | (89.3 | ) |  |  | (51.8 | )%
Net cash used in investing activities (B) |  | $ | (243.5 | ) |  | $ | (312.2 | ) |  | $ | 68.7 |  |  |  | (22.0 | )%
Net cash provided from financing activities (C) |  | $ | 164.6 |  |  | $ | 358.8 |  |  | $ | (194.2 | ) |  |  | (54.1 | )%

(A)
Changed primarily due to decreased fuel recoveries from customers.
(B)
Changed primarily due to timing of power delivery projects.
(C)
Changed primarily due to decreased proceeds from long-term debt reflective of the debt issuance in January 2023, partially offset by an increase in short-term debt.

Working Capital

Working capital is defined as the difference in current assets and current liabilities. OGE Energy's working capital requirements are driven generally by changes in accounts receivable, accounts payable, commodity prices, credit extended to and the timing of collections from OG&E's customers, the level and timing of spending for maintenance and expansion activity, inventory levels and fuel recoveries. The following discussion addresses changes in OGE Energy's working capital balances at March 31, 2024 compared to December 31, 2023.

Accounts Receivable and Accrued Unbilled Revenues decreased $36.7 million, or 13.0 percent, primarily due to a decrease in billings to OG&E's retail customers reflecting lower seasonal usage in March 2024 as compared to December 2023.

Short-Term Debt increased $256.5 million, or 51.4 percent, primarily due to increased borrowings for general operating needs. The Registrants borrow on a short-term basis, as necessary, through the issuance of commercial paper under their revolving credit agreements.

Accounts Payable decreased $64.5 million, or 23.3 percent, primarily due to the timing of vendor payments and a decrease in fuel and purchased power payables.

Accrued Taxes decreased $18.6 million, or 39.1 percent, primarily due to timing of ad valorem tax payments.

Accrued Compensation decreased $16.1 million, or 34.4 percent, primarily due to 2023 incentive compensation payouts that occurred in the first quarter of 2024.

Long-Term Debt due within One Year increased $79.4 million, due to the reclassification of industrial authority bonds that are scheduled to mature in January 2025.

Fuel Clause Over Recoveries increased $16.0 million, or 78.0 percent, primarily due to higher recoveries from OG&E retail customers as compared to the actual cost of fuel and purchased power.

Future Material Cash Requirements

OGE Energy's primary, material cash requirements are related to acquiring or constructing new facilities and replacing or expanding existing facilities at OG&E. Other working capital requirements are expected to be primarily related to maturing debt,

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operating lease obligations, fuel clause under recoveries and other general corporate purposes. Further, working capital requirements can be seasonal. OGE Energy generally meets its cash needs through a combination of cash generated from operations, short-term borrowings (through a combination of bank borrowings and commercial paper) and permanent financings. OGE Energy believes its cash flows from operations, existing borrowing capacity, and access to debt and equity capital markets, as needed, should be sufficient to satisfy material cash requirements over the short-term and long-term.

Capital Expenditures

OGE Energy's estimates of capital expenditures for the years 2024 through 2028 are discussed in detail within "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Registrants' 2023 Form 10-K, and OGE Energy's estimates have not changed significantly at this time. The capital investments are customer-focused and targeted to maintain and improve the safety, resiliency and reliability of OG&E's distribution and transmission grid and generation fleet, enhance the ability of OG&E's system to perform during extreme weather events and to serve OG&E's growing customer base. Additional capital expenditures beyond those identified in the Registrants' 2023 Form 10-K, including additional incremental growth opportunities, will be evaluated based upon the requirements of OG&E's power supply, transmission and distribution operational teams and the expected resultant customer benefits. OG&E intends to issue requests for proposals for resources to satisfy the new generation capacity needs identified in OG&E's 2024 IRP. OG&E also intends to file for approval of generation capacity investments and would expect to update its capital plan based on final orders received by state regulators. The annual level of investments in the transmission and distribution system could vary depending on the amount and timing of incremental generation capacity investments.

Financing Activities and Future Sources of Financing

Management expects that cash generated from operations, proceeds from the issuance of long- and short-term debt, proceeds from the sales of common stock to the public through OGE Energy's Automatic Dividend Reinvestment and Stock Purchase Plan, or other offerings will be adequate over the short-term and the long-term to meet anticipated cash needs and to fund future growth opportunities. OGE Energy utilizes short-term borrowings (through a combination of bank borrowings and commercial paper) to satisfy temporary working capital needs and as an interim source of financing capital expenditures until permanent financing is arranged.

Short-Term Debt and Credit Facilities

OGE Energy borrows on a short-term basis, as necessary, by issuance of commercial paper and borrowings under its revolving credit agreements and term credit agreements maturing in one year or less.

OGE Energy has unsecured five-year revolving credit facilities totaling $1.1 billion ($550.0 million for OGE Energy and $550.0 million for OG&E), which can also be used as letter of credit facilities. OGE Energy also has a $100.0 million floating rate unsecured three-year credit agreement, of which $50.0 million is considered a revolving loan. The following table presents information about OGE Energy's revolving credit agreements at March 31, 2024.

(Dollars in millions) |  | March 31, 2024 |
Balance of outstanding supporting letters of credit |  | $ | 0.4 |
Weighted-average interest rate of outstanding supporting letters of credit |  |  | 1.20 | %
Net available liquidity under revolving credit agreements, commercial paper borrowings and letters of credit |  | $ | 393.9 |
Balance of cash and cash equivalents |  | $ | 4.3 |

The following table presents information about OGE Energy's total short-term debt activity for the three months ended March 31, 2024.

(Dollars in millions) |  | Three Months Ended March 31, 2024 |
Average balance of short-term debt |  | $ | 640.0 |
Weighted-average interest rate of average balance of short-term debt |  |  | 5.70 | %
Maximum month-end balance of short-term debt |  | $ | 755.7 |

OG&E must obtain regulatory approval from the FERC in order to borrow on a short-term basis. OG&E has the necessary regulatory approvals to incur up to $1.0 billion in short-term borrowings at any one time for a two-year period beginning January 1, 2023 and ending December 31, 2024.

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E xpected Issuance of Long-Term Debt

OGE Energy expects to issue up to $350 million of long-term debt in the second quarter of 2024, and OG&E expects to issue $300 million to $350 million of long-term debt in the second half of 2024. The proceeds will be used to help fund general operating needs.

Security Ratings

Access to reasonably priced capital is dependent in part on credit and security ratings. Generally, lower ratings lead to higher financing costs. Pricing grids associated with OGE Energy's credit facilities could cause annual fees and borrowing rates to increase if an adverse rating impact occurs. The impact of any future downgrade could include an increase in the costs of OGE Energy's short-term borrowings, but a reduction in OGE Energy's credit ratings would not result in any defaults or accelerations. Any future downgrade could also lead to higher long-term borrowing costs and, if below investment grade, would require OGE Energy to post collateral or letters of credit.

A security rating is not a recommendation to buy, sell or hold securities. Such rating may be subject to revision or withdrawal at any time by the credit rating agency, and each rating should be evaluated independently of any other rating.

Critical Accounting Policies and Estimates

The condensed financial statements and notes thereto contain information that is pertinent to Management's Discussion and Analysis of Financial Condition and Results of Operations. In preparing the condensed financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and contingent liabilities at the date of the condensed financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Changes to these assumptions and estimates could have a material effect on the condensed financial statements. The Registrants believe they have taken reasonable positions where assumptions and estimates are used in order to minimize the negative financial impact to the Registrants that could result if actual results vary from the assumptions and estimates.

In management's opinion, the areas where the most significant judgment is exercised include the determination of pension and postretirement plan assumptions, income taxes, contingency reserves, and regulatory assets and liabilities. The selection, application and disclosure of the critical accounting estimates have been discussed with the Audit Committee of OGE Energy's Board of Directors and are discussed in detail within "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Registrants' 2023 Form 10-K.

Commitments and Contingencies

In the normal course of business, the Registrants are confronted with issues or events that may result in a contingent liability. These generally relate to lawsuits or claims made by third parties, including governmental agencies. When appropriate, management consults with legal counsel and other experts to assess the claim. If, in management's opinion, the Registrants have incurred a probable loss as set forth by GAAP, an estimate is made of the loss, and the appropriate accounting entries are reflected in the condensed financial statements. If the assessment indicates that a potential loss is not probable but reasonably possible, the nature of the contingent matter, together with an estimate of the range of possible loss if determinable and material, would be disclosed. At the present time, based on available information, except as disclosed in Note 12 within "Item 1. Financial Statements," the Registrants believe that any reasonably possible losses in excess of accrued amounts arising out of pending or threatened lawsuits or claims would not be quantitatively material to their condensed financial statements and would not have a material adverse effect on their financial position, results of operations or cash flows. See Notes 12 and 13 within "Item 1. Financial Statements" for further discussion of the Registrants' commitments and contingencies.

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Environmental Laws and Regulations

The activities of OG&E are subject to numerous stringent and complex federal, state and local laws and regulations governing environmental protection. These laws and regulations can change, restrict or otherwise impact the Registrants' business activities in many ways, including the handling or disposal of waste material, planning for future construction activities to avoid or mitigate harm to threatened or endangered species and requiring the installation and operation of emissions or pollution control equipment. Failure to comply with these laws and regulations could result in the assessment of administrative, civil and criminal penalties, the imposition of remedial requirements and the issuance of orders enjoining future operations. Management believes that all of OG&E's operations are in substantial compliance with current federal, state and local environmental standards.

President Biden's Administration has taken a number of actions that adopt policies and affect environmental regulations, including issuance of executive orders that instruct the EPA and other executive agencies to review certain rules that affect OG&E with a view to achieving nationwide reductions in greenhouse gas emissions. The Registrants are monitoring these actions which are in various stages of being implemented. At this point in time, the impacts of these actions on the Registrants' results of operations, if any, cannot be determined with any certainty.

Environmental regulation can increase the cost of planning, design, initial installation and operation of OG&E's facilities. Management continues to evaluate its compliance with existing and proposed environmental legislation and regulations and implement appropriate environmental programs in a competitive market.

Air

OG&E's operations are subject to the Federal Clean Air Act of 1970, as amended, and comparable state laws and regulations. These laws and regulations regulate emissions of air pollutants from various industrial sources, including electric generating units and also impose various monitoring and reporting requirements. Such laws and regulations may require that OG&E obtain pre-approval for the construction or modification of certain projects or facilities expected to produce air emissions or result in the increase of existing air emissions, obtain and strictly comply with air permits containing various emissions and operational limitations or install emission control equipment. OG&E likely will be required to incur certain capital expenditures in the future for air pollution control equipment and technology in connection with obtaining and maintaining operating permits and approvals for air emissions.

Cross State Air Pollution Rule

The EPA revised the NAAQS for ozone in 2015. Although Oklahoma complies with the revised standard, the Federal Clean Air Act of 1970, as amended, requires states to submit to the EPA for approval a SIP to prohibit in-state sources from contributing significantly to nonattainment of the NAAQS in another state. On October 28, 2018, Oklahoma submitted its SIP to the EPA related to these "Good Neighbor" requirements. On January 31, 2023, the EPA disapproved the SIPs of 19 states, including Oklahoma. On March 2, 2023, the Oklahoma Attorney General and the ODEQ jointly filed a Petition for Review of the SIP disapproval in the Tenth Circuit. On March 16, 2023, OG&E filed a Petition for Review of the SIP disapproval in the Tenth Circuit. On June 6, 2023, OG&E, together with the Oklahoma Attorney General and other parties, jointly filed a motion with the Tenth Circuit requesting a stay of the EPA’s disapproval of the Oklahoma SIP; the stay was granted on July 27, 2023. On February 27, 2024, the Tenth Circuit issued a decision to transfer venue to the U.S. Court of Appeals for the District of Columbia and vacated oral argument originally scheduled for March 21, 2024 but did not vacate the stay it granted. On March 28, 2024, the Oklahoma Attorney General, on behalf of the parties noted above, petitioned the Supreme Court to review the Tenth Circuit’s decision to transfer the SIP disapproval cases to the D.C. Circuit, and on April 24, 2024, the D.C. Circuit ordered that the cases be held in abeyance pending action by the Supreme Court. The timing of a Supreme Court decision or when oral argument will take place at the D.C. Circuit is unknown.

In a separate but related matter, on April 6, 2022, the EPA also published a proposed FIP related to the "Good Neighbor" requirements intended to reduce interstate NO X emissions contributions. OG&E filed comments to the proposed FIP with the EPA on June 21, 2022. On June 5, 2023, the EPA published a final FIP for 23 states, including Oklahoma. The issuance of the FIP resulted from the EPA's aforementioned SIP disapprovals. Among other changes, the EPA finalized a revision of the current Oklahoma NO X emissions budget for electric generating units, including OG&E's units, which began in 2023. Under the terms of the FIP, the emissions budget will decline over time based on the level of reductions that the EPA has determined is achievable through particular emissions controls. OG&E’s preliminary analysis indicates that Oklahoma’s state budget for 2026 will be reduced by 34.5 percent from 2023 levels and that for 2027 it will be reduced by 50 percent from 2021 levels. On July 7, 2023, the Attorney General of Oklahoma and other petitioners filed a motion in the Tenth Circuit Court to stay the EPA's final FIP for Oklahoma. On July 31, 2023, the petitioners filed a

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joint, unopposed motion requesting that the court abate further proceedings pending resolution of the Utah and Oklahoma SIP disapproval challenges, and the court granted this motion on August 2, 2023. The petitioners will be required to notify the court within five days after the SIP disapproval challenge is resolved. The FIP became effective August 4, 2023; however, as long as the stay of the EPA's disapproval of the Oklahoma SIP discussed above remains in place, the EPA may not enforce the Good Neighbor FIP. In an interim final rule published in the Federal Register on September 29, 2023, the EPA stayed the Good Neighbor Plan's requirements for emissions sources in Oklahoma. In addition, in October 2023, several state and industry petitioners filed emergency applications for a stay of the EPA’s Good Neighbor FIP in the U.S. Supreme Court. Oral argument to decide whether to grant these applications was heard on February 21, 2024.

In light of the issuance of the FIP, OG&E has been evaluating various control strategies to reduce emissions at its generating units, which can range from some combination of purchase of emission allowances, installation of selective catalytic reduction controls, conversion of coal-fired units to gas-fired units or retirement and replacement of capacity. OG&E submitted its final 2024 IRP to the OCC and APSC on March 29, 2024. The IRP evaluates various potential compliance options related to the EPA's Good Neighbor FIP. Due to the uncertainty relating to the disapproval of the SIP and implementation of the FIP, OG&E cannot determine the cost to comply with certainty, as such costs are dependent upon the timing and outcome of the litigation discussed above, the particular control strategies ultimately selected for each unit, the terms and timing of regulatory approvals required from the OCC and the time period necessary to complete the projects. However, OG&E preliminarily estimates that the cost of compliance with the FIP as issued could be approximately $2.4 billion to $2.8 billion in total, including $100 million to $300 million over the 12- to 18-month period following effectiveness of the FIP. OG&E expects that it would seek recovery of any necessary environmental expenditures to handle state and federally mandated environmental upgrades, but there is no guarantee that all of such expenditures will be approved for recovery or will be approved for recovery on a timely basis.

Particulate Matter NAAQS

On February 7, 2024, the EPA issued a final rule resulting from its reconsideration of the primary (health-based) and secondary (welfare-based) NAAQS for PM, which were set in 2013 and which the EPA declined to revise in 2020. The final rule lowers the primary annual PM 2.5 NAAQS from 12.0 µg/m3 to 9.0 µg/m3 and retains the other PM standards at their current levels, including the 24-hour PM 2.5 NAAQS.

The EPA will determine which areas of the country meet the standards, such as making initial attainment/nonattainment designations, no later than two years after new standards are issued. States must develop and submit attainment plans no later than 18 months after the EPA finalizes nonattainment designations. The revised NAAQS could impact regional air quality goals and emission limits for emission sources; however, it is unknown at this time what, if any, potential material impacts to OG&E individual operating permit emission limits will result from the EPA actions.

Regional Haze

In July 2020, the ODEQ notified OG&E that the Horseshoe Lake generating units would be included in Oklahoma's second Regional Haze implementation period evaluation of visibility impairment impacts to the Wichita Mountains. OG&E submitted an analysis of all potential control measures for NO x on these units to the ODEQ. The ODEQ submitted a revised SIP to the EPA on August 12, 2022. On March 29, 2024, the EPA published in the Federal Register a proposed consent decree for public comment which would require the EPA to propose action on the Oklahoma SIP by December 15, 2025 and take final action by December 31, 2026. It is unknown at this time what the outcome, or any potential material impacts, if any, will be from the evaluations by OG&E, the ODEQ and the EPA.

Mercury and Air Toxics Standards

On April 24, 2023, the EPA published in the Federal Register a proposed rule, National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units - Review of the Residual Risk and Technology Review. The proposal contains the results of the EPA’s review of the May 2020 risk and technology review for the Mercury and Air Toxics Standards and proposes changes to certain emission standards and compliance measures. On April 25, 2024, the EPA released the final revised Mercury and Air Toxics Standards regulation. OG&E is currently reviewing the new rule; however, it is unknown what potential material impacts, if any, will be from the final action by the EPA.

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Greenhouse Gas

OG&E monitors possible changes in legal standards for emissions of greenhouse gases, including CO 2, sulfur hexafluoride and methane, including President Biden Administration's target of a 50 to 52 percent reduction in economy-wide net greenhouse gas emissions from 2005 levels by 2030 with full decarbonization of the electric power industry by 2035. If legislation or regulations are passed at the federal or state levels in the future requiring mandatory reductions of CO 2 and other greenhouse gases at OG&E's facilities, this could result in significant additional compliance costs that would affect OG&E's future financial position, results of operations and cash flows if such costs are not recovered through regulated rates.

On May 23, 2023, the EPA proposed rules to reduce emissions of greenhouse gases from fossil fuel-fired electric generating units under Clean Air Act Section 111. The proposal encompasses both Section 111(b) and 111(d) rulemakings for new units and existing units, respectively. In particular, the proposed rules would (i) strengthen the current New Source Performance Standards for newly built fossil fuel-fired stationary combustion turbines (generally natural gas-fired); (ii) establish emission guidelines for states to follow in limiting carbon pollution from existing fossil fuel-fired steam electric generating units (including coal, oil, and natural gas-fired units); and (iii) establish emission guidelines for large, frequently used existing fossil fuel-fired stationary combustion turbines (generally natural gas-fired). OG&E filed comments regarding the proposal on August 8, 2023 and participated with trade associations to develop industry-focused comments. Regional transmission organizations, including the SPP, separately filed a joint comment letter to the EPA on August 8, 2023, noting that there is a need for the EPA to add specific measures to the proposed greenhouse gas rules to address reliability. On November 20, 2023, the EPA published in the Federal Register a request for additional comments focused on reliability. OG&E participated with industry groups to provide comments to the EPA on December 20, 2023.

On April 25, 2024, the EPA released the final greenhouse gas regulations, which OG&E is currently reviewing. As previously indicated by the EPA, the finalized version of these regulations does not address existing fossil fuel-fired stationary combustion turbines. On March 26, 2024, the EPA opened a non-rulemaking regulatory docket initiating a separate rulemaking and seeking public input for 60 days on the EPA's efforts to reduce emissions from such existing combustion turbines. It is unknown what the outcome, or any potential material impacts, if any, will be from the final action by the EPA.

As a member of the SPP Integrated Marketplace, OG&E customers have access to clean energy resources while maintaining reliability and affordability. With respect to its calendar year 2023 direct emissions, compared to 2005 levels, OG&E has reduced carbon dioxide emissions by over 60 percent, emissions of ozone-forming NO X have been reduced by approximately 80 percent, and emissions of sulfur dioxide have been reduced by approximately 95 percent. Direct emission reductions are due to factors such as OG&E’s conversion of certain coal units to natural gas units, its participation in the SPP integrated market, and its active engagement with customers in OG&E’s SmartHours and Load Reduction Programs which helps reduce the amount of generation required to serve peak demand. OG&E is also planning to deploy more renewable energy sources that do not emit greenhouse gases. OG&E has leveraged its geographic position to develop renewable energy resources and completed transmission investments to deliver the renewable energy.

Endangered Species

Certain federal laws, including the Bald and Golden Eagle Protection Act, the Migratory Bird Treaty Act and the Endangered Species Act, provide special protection to certain designated species. These laws and any state equivalents provide for significant civil and criminal penalties for unpermitted activities that result in harm to or harassment of certain protected animals and plants, including damage to their habitats. If such species are located in an area in which OG&E conducts operations, or if additional species in those areas become subject to protection, OG&E's operations and development projects, particularly transmission, wind or solar projects, could be restricted or delayed, or OG&E could be required to implement expensive mitigation measures.

On September 14, 2022, the USFWS published a proposal to list the Tricolored Bat as endangered under the Endangered Species Act. According to the proposal, the current known range of the Tricolored Bat extends to 36 states, including Oklahoma and Arkansas. A listing decision is expected by September 2024. OG&E is closely monitoring this issue due to possible future impacts; however, it is unknown at this time what, if any, material impacts will result from the USFWS action.

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Waste

OG&E's operations generate wastes that are subject to the Federal Resource Conservation and Recovery Act of 1976 as well as comparable state laws which impose detailed requirements for the handling, storage, treatment and disposal of waste.

During 2023, approximately 94 percent of the ash from OG&E's River Valley, Muskogee and Sooner facilities was recovered and reused in various ways, including soil stabilization, landfill cover, road base construction and cement and concrete production. Reusing fly ash reduces the need to manufacture cement resulting in reductions in greenhouse gas emissions from cement and concrete production. Based on estimates from the American Coal Ash Association, OG&E fly ash reuse helped avoid over 3.5 million tons of CO 2 emissions in the last 16 years.

OG&E has sought and will continue to seek pollution prevention opportunities and to evaluate the effectiveness of its waste reduction, reuse and recycling efforts. OG&E obtains refunds from the recycling of scrap metal, salvaged transformers and used transformer oil. Additional savings are expected to be gained through the reduction and/or avoidance of disposal costs and the reduction in material purchases due to the reuse of existing materials.

Water

OG&E's operations are subject to the Federal Clean Water Act and comparable state laws and regulations. These laws and regulations impose detailed requirements and strict controls regarding the discharge of pollutants into state and federal waters.

In 2015, the EPA issued a final rule addressing the effluent limitation guidelines for power plants under the Federal Clean Water Act. The final rule establishes technology- and performance-based standards that may apply to discharges of six waste streams including bottom ash transport water. On April 12, 2017, the EPA granted a Petition for Reconsideration of the 2015 Rule. On October 13, 2020, the EPA published a final rule to revise the technology-based effluent limitations for flue gas desulfurization wastewater and bottom ash transport water. On August 3, 2021, the EPA published notice in the Federal Register that it will undertake a supplemental rulemaking to revise the effluent limitation guidelines rule after completing its review of the October 2020 rule. On March 29, 2023, the EPA published a proposed rule to revise the effluent limitation guidelines for flue gas desulfurization wastewater, bottom ash transport water and combustion residual leachate. The proposed rule would prohibit any discharge from bottom ash transport water systems and has a compliance date of December 31, 2029. On April 25, 2024, the EPA released the final supplemental effluent limitations guidelines rule, which OG&E is currently reviewing. OG&E has begun installation of dry bottom ash handling technology, which will comply with the final rule by the compliance date.

Since the purchase of the Redbud facility in 2008, OG&E made investments in the infrastructure that have led to OG&E's average use of approximately 2.4 billion gallons per year of treated municipal effluent for cooling water at Redbud and McClain. This use of treated municipal effluent offsets the need for fresh water as cooling water, making fresh water available for other beneficial uses like drinking water, irrigation and recreation.

Site Remediation

The Comprehensive Environmental Response, Compensation and Liability Act of 1980 and comparable state laws impose liability, without regard to the legality of the original conduct, on certain classes of persons responsible for the release of hazardous substances into the environment. Because OG&E utilizes various products and generates wastes that are considered hazardous substances for purposes of the Comprehensive Environmental Response, Compensation and Liability Act of 1980, OG&E could be subject to liability for the costs of cleaning up and restoring sites where those substances have been released to the environment. At this time, it is not anticipated that any associated liability will cause a significant impact to OG&E.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

There have been no significant changes in the market risks affecting the Registrants from those discussed in the Registrants' 2023 Form 10-K.

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Item 4. Controls and Procedures.

The Registrants maintain a set of disclosure controls and procedures designed to ensure that information required to be disclosed by the Registrants in reports that they file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms. In addition, the disclosure controls and procedures ensure that information required to be disclosed is accumulated and communicated to management, including the chief executive officer and chief financial officer, allowing timely decisions regarding required disclosure. As of the end of the period covered by this report, based on an evaluation carried out under the supervision and with the participation of the Registrants' management, including the chief executive officer and chief financial officer, of the effectiveness of the Registrants' disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15(d)-15(e) under the Securities Exchange Act of 1934), the chief executive officer and chief financial officer have concluded that the Registrants' disclosure controls and procedures are effective.

No change in the Registrants' internal control over financial reporting has occurred during the most recently completed fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Registrants' internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934).

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings.

Reference is made to Item 3 of Part I of the Registrants' 2023 Form 10-K for a description of certain legal proceedings presently pending. Except as described in Notes 12 and 13 within "Part I - Item 1. Financial Statements," there are no new significant cases to report against the Registrants, and there have been no material changes in the previously reported proceedings.

Item 1A. Risk Factors.

There have been no significant changes in the Registrants' risk factors from those discussed in the Registrants' 2023 Form 10-K, which are incorporated herein by reference.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

None.

Item 5. Other Information.

During the three months ended March 31, 2024, no director or officer of the Registrants adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

Item 6. Exhibits.

Exhibit No. | Description | OGE Energy | OG&E
31.01+ | Certifications Pursuant to Rule 13a-14(a)/15d-14(a) As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. | X |
31.02+ | Certifications Pursuant to Rule 13a-14(a)/15d-14(a) As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |  | X
32.01+ | Certification Pursuant to 18 U.S.C. Section 1350 As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. | X |
32.02+ | Certification Pursuant to 18 U.S.C. Section 1350 As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |  | X
101.INS | Inline XBRL Instance Document - the instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document. | X | X
101.SCH | Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents. | X | X
104 | Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document (included in Exhibit 101). | X | X
+ Represents exhibits filed herewith. All exhibits not so designated are incorporated by reference to a prior filing, as indicated.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized.

| OGE ENERGY CORP.
| OKLAHOMA GAS AND ELECTRIC COMPANY
| (Registrant)
By: | /s/ Sarah R. Stafford
| Sarah R. Stafford
| Controller and Chief Accounting Officer
| (On behalf of the Registrants and in her capacity as Chief Accounting Officer)

April 30, 2024

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