Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Long-term Purchase Commitment

As of March 31, 2022, undiscounted minimum purchase obligations are approximately:

	CenterPoint Energy				CERC
	Natural Gas and Coal Supply		Other (1)		Natural Gas Supply
	(in millions)
Remaining nine months of 2022	$	521	$	99	$	348
2023	726		503		535
2024	638		181		507
2025	451		30		339
2026	324		30		246
2027	305		72		241
2028 and beyond	1,319		544		1,079

(1)CenterPoint Energy’s undiscounted minimum payment obligations related to PPAs with commitments ranging from 15 to 25 years and its purchase commitment under its BTA in Posey 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.

	March 31, 2022
	CenterPoint Energy		CERC
	(in millions, except years)
Amount accrued for remediation	$	17	$	12
Minimum estimated remediation costs	12		9
Maximum estimated remediation costs	51		29
Minimum years of remediation	5		30
Maximum years of remediation	50		50