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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Purchase Obligations
As of March 31, 2025, CenterPoint Energy and CERC had the following undiscounted minimum purchase obligations:
CenterPoint EnergyCERC
Natural Gas Supply
Electric Supply (1)Other (2)Natural Gas Supply
(in millions)
Remainder of 2025
$426 $63 $77 $423 
2026601 113 107 597 
2027519 130 26 515 
2028472 88 10 468 
2029452 94 3 448 
Thereafter
1,648 1,349 171 1,620 
Total$4,118 $1,837 $394 $4,071 

(1)Related to PPAs with commitments ranging from 15 years to 25 years.
(2)Related primarily to technology hardware and software agreements.
Schedule of Estimated Accrued Costs
Total costs that may be incurred in connection with addressing these sites cannot be determined at this time. The estimated accrued costs are limited to CenterPoint Energy’s and CERC’s share of the remediation efforts and are therefore net of exposures of other PRPs. The estimated range of possible remediation costs for the sites for which CenterPoint Energy and CERC believe they may have responsibility was based on remediation continuing for the minimum time frame given in the table below:
March 31, 2025
CenterPoint EnergyCERC
(in millions, except years)
Amount accrued for remediation$13 $11 
Minimum estimated remediation costs8 7 
Maximum estimated remediation costs48 41 
Minimum years of remediation55
Maximum years of remediation5050