XML 191 R27.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Property, Plant and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment (a) Property, Plant and Equipment Property, plant and equipment includes the following:
|  |  | December 31, 2024 |  | December 31, 2023
| Weighted Average Useful Lives |  | Property, Plant and Equipment, Gross |  | Accumulated Depreciation & Amortization |  | Property, Plant and Equipment, Net |  | Property, Plant and Equipment, Gross |  | Accumulated Depreciation & Amortization |  | Property, Plant and Equipment, Net
| (in years) |  | (in millions)
CenterPoint Energy |  |  |  |  |  |  |  |  |  |  |  |  |
Electric transmission and distribution | 37 |  | $ | 21,387 |  |  | $ | 4,810 |  |  | $ | 16,577 |  |  | $ | 19,151 |  |  | $ | 4,762 |  |  | $ | 14,389 |
Electric generation (1) | 25 |  | 1,107 |  |  | 154 |  |  | 953 |  |  | 1,381 |  |  | 315 |  |  | 1,066 |
Natural gas distribution | 32 |  | 16,399 |  |  | 4,326 |  |  | 12,073 |  |  | 16,492 |  |  | 4,337 |  |  | 12,155 |
Finance ROU asset (2) | 7.5 |  | 662 |  |  | 232 |  |  | 430 |  |  | 662 |  |  | 136 |  |  | 526 |
Other property | 22 |  | 3,112 |  |  | 1,056 |  |  | 2,056 |  |  | 2,710 |  |  | 993 |  |  | 1,717 |
Total |  |  | $ | 42,667 |  |  | $ | 10,578 |  |  | $ | 32,089 |  |  | $ | 40,396 |  |  | $ | 10,543 |  |  | $ | 29,853 |
|  |  | December 31, 2024 |  | December 31, 2023
| Weighted Average Useful Lives |  | Property, Plant and Equipment, Gross |  | Accumulated Depreciation & Amortization |  | Property, Plant and Equipment, Net |  | Property, Plant and Equipment, Gross |  | Accumulated Depreciation & Amortization |  | Property, Plant and Equipment, Net
| (in years) |  | (in millions)
Houston Electric |  |  |  |  |  |  |  |  |  |  |  |  |
Electric transmission and distribution | 37 |  | $ | 18,645 |  |  | $ | 3,647 |  |  | $ | 14,998 |  |  | $ | 16,800 |  |  | $ | 3,641 |  |  | $ | 13,159 |
Finance ROU asset (2) | 7.5 |  | 662 |  |  | 232 |  |  | 430 |  |  | 662 |  |  | 136 |  |  | 526 |
Other property | 20 |  | 2,443 |  |  | 749 |  |  | 1,694 |  |  | 2,053 |  |  | 692 |  |  | 1,361 |
Total |  |  | $ | 21,750 |  |  | $ | 4,628 |  |  | $ | 17,122 |  |  | $ | 19,515 |  |  | $ | 4,469 |  |  | $ | 15,046 |
CERC |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas distribution | 32 |  | $ | 15,474 |  |  | $ | 4,118 |  |  | $ | 11,356 |  |  | $ | 15,591 |  |  | $ | 4,136 |  |  | $ | 11,455 |
Other property | 11 |  | 78 |  |  | 28 |  |  | 50 |  |  | 81 |  |  | 33 |  |  | 48 |
Total |  |  | $ | 15,552 |  |  | $ | 4,146 |  |  | $ | 11,406 |  |  | $ | 15,672 |  |  | $ | 4,169 |  |  | $ | 11,503 |
(1)SIGECO and AGC owned a 300 MW unit at the Warrick Power Plant (Warrick Unit 4) as tenants in common as of December 31, 2023. SIGECO’s share of the cost of this unit as of December 31, 2023, was $198 million with accumulated depreciation totaling $171 million. Under the operating agreement, AGC and SIGECO shared equally in the cost of operation and output of the unit. SIGECO’s share of operating costs was included in Operation and maintenance expense in CenterPoint Energy’s Statements of Consolidated Income. SIGECO exited joint operations of Warrick Unit 4 on January 1, 2024. (2)Houston Electric recognized a finance ROU asset as of December 31, 2024 and December 31, 2023 related to temporary generation. See Note 19 for further discussion. (b) Depreciation and Amortization The following table presents depreciation and amortization expense for 2024, 2023 and 2022:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Depreciation | $ | 1,177 |  |  | $ | 545 |  |  | $ | 492 |  |  | $ | 1,092 |  |  | $ | 484 |  |  | $ | 459 |  |  | $ | 1,013 |  |  | $ | 434 |  |  | $ | 420 |
Amortization of securitized regulatory assets | 90 |  |  | 74 |  |  | — |  |  | 163 |  |  | 155 |  |  | — |  |  | 191 |  |  | 191 |  |  | — |
Other amortization | 172 |  |  | 143 |  |  | 30 |  |  | 146 |  |  | 109 |  |  | 34 |  |  | 84 |  |  | 45 |  |  | 28 |
Total | $ | 1,439 |  |  | $ | 762 |  |  | $ | 522 |  |  | $ | 1,401 |  |  | $ | 748 |  |  | $ | 493 |  |  | $ | 1,288 |  |  | $ | 670 |  |  | $ | 448 |
(c) AROs The Registrants account for an ARO at fair value in the period during which the legal obligation is incurred if a reasonable estimate of fair value and its settlement date can be made. At the timing of recording an ARO, the associated asset retirement costs are capitalized as part of the carrying amount of the related long-lived asset. The Registrants recognize a regulatory asset or liability for the timing differences between the recognition of expenses and costs recovered through the ratemaking process. The estimates of future liabilities are developed using a discounted cash flow model based upon estimates and assumptions of future costs, interest rates, credit-adjusted risk-free rates and the estimated timing of settlement. The Registrants have recorded AROs associated with the removal of asbestos and asbestos-containing material in its buildings, including substation building structures. CenterPoint Energy recorded AROs relating to the closure of the ash ponds at A.B. Brown and F.B. Culley as well as certain sites in Indiana pursuant to the CCR Legacy Rule; see Note 14(d) for further discussion. CenterPoint Energy and Houston Electric also recorded AROs relating to treated wood poles for electric distribution, distribution transformers containing PCB (also known as Polychlorinated Biphenyl), and underground fuel storage tanks. CenterPoint Energy and CERC also recorded AROs relating to gas pipelines abandoned in place. A reconciliation of the changes in the ARO liability recorded in Other non-current liabilities on each of the Registrants’ respective Consolidated Balance Sheets is as follows:
| December 31, 2024 |  | December 31, 2023
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Beginning balance | $ | 590 |  |  | $ | 40 |  |  | $ | 380 |  |  | $ | 610 |  |  | $ | 36 |  |  | $ | 420 |
Additions | 11 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Accretion expense (1) | 21 |  |  | 1 |  |  | 16 |  |  | 23 |  |  | 1 |  |  | 16 |
Revisions in estimates (2) | (34) |  |  | (2) |  |  | (33) |  |  | (43) |  |  | 3 |  |  | (56) |
Ending balance | $ | 588 |  |  | $ | 39 |  |  | $ | 363 |  |  | $ | 590 |  |  | $ | 40 |  |  | $ | 380 |
(1)Reflected in Regulatory assets on each of the Registrants’ respective Consolidated Balance Sheets. (2)In 2024 and 2023, CenterPoint Energy and CERC reflected a decrease in their respective ARO liability, which was primarily attributable to increases in the long-term interest rates used for discounting in the ARO calculation. In 2024, Houston Electric reflected a decrease in its ARO liability attributable to an increase in discount rates, while in 2023, Houston Electric reflected an increase in its ARO liability attributable to an increase in discount rates and disposal costs.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration