Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Long-term Purchase Commitment

As of September 30, 2022, other than discussed below, undiscounted minimum purchase obligations are approximately:

	CenterPoint Energy				CERC
	Natural Gas and Coal Supply		Other (1)		Natural Gas Supply
	(in millions)
Remaining three months of 2022	$	343	$	79	$	289
2023	1,046		567		923
2024	898		385		855
2025	669		63		627
2026	510		33		474
2027	442		74		406
2028 and beyond	2,135		571		2,019

(1)CenterPoint Energy’s undiscounted minimum payment obligations related to PPAs with commitments ranging from 15 to 25 years and its purchase commitments under its BTA in Posey County, Indiana and its BTA in Pike County, Indiana are included above. The remaining undiscounted payment obligations relate primarily to technology hardware and software agreements.

Schedule of Environmental Loss Contingencies by Site

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.

	September 30, 2022
	CenterPoint Energy		CERC
	(in millions, except years)
Amount accrued for remediation	$	16	$	14
Minimum estimated remediation costs	12		11
Maximum estimated remediation costs	51		44
Minimum years of remediation	5		5
Maximum years of remediation	50		50