Asset Retirement Obligations

9 Months Ended

Sep. 30, 2022

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement ObligationsIn September 2022, Consumers increased its ARO liability for coal ash disposal areas. The increase was attributable to a proposed change for closure work at the J.H. Campbell 3 ash disposal landfill and an updated cost estimate for other coal ash disposal areas. These changes provided Consumers with sufficient information to reasonably estimate a revision to the ARO liability associated with the coal ash disposal areas. Presented in the following table are the changes in CMS Energy’s and Consumers’ ARO liabilities:

In Millions
Company and ARO Description	ARO Liability 12/31/2021			Incurred			Settled			Accretion			Cash Flow Revisions			ARO Liability 9/30/2022
CMS Energy, including Consumers
Consumers		$	605		$	—		$	(30)		$	19		$	129		$	723
Renewable generation assets		23			—			—			1			—			24
Total CMS Energy		$	628		$	—		$	(30)		$	20		$	129		$	747
Consumers
Coal ash disposal areas		$	157		$	—		$	(17)		$	4		$	129		$	273
Gas distribution cut, purge, and cap		282			—			(10)			11			—			283
Asbestos abatement		38			—			(1)			1			—			38
Renewable generation assets		93			—			—			2			—			95
Gas wells plug and abandon		35			—			(2)			1			—			34
Total Consumers		$	605		$	—		$	(30)		$	19		$	129		$	723

Consumers Energy Company

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement ObligationsIn September 2022, Consumers increased its ARO liability for coal ash disposal areas. The increase was attributable to a proposed change for closure work at the J.H. Campbell 3 ash disposal landfill and an updated cost estimate for other coal ash disposal areas. These changes provided Consumers with sufficient information to reasonably estimate a revision to the ARO liability associated with the coal ash disposal areas. Presented in the following table are the changes in CMS Energy’s and Consumers’ ARO liabilities:

In Millions
Company and ARO Description	ARO Liability 12/31/2021			Incurred			Settled			Accretion			Cash Flow Revisions			ARO Liability 9/30/2022
CMS Energy, including Consumers
Consumers		$	605		$	—		$	(30)		$	19		$	129		$	723
Renewable generation assets		23			—			—			1			—			24
Total CMS Energy		$	628		$	—		$	(30)		$	20		$	129		$	747
Consumers
Coal ash disposal areas		$	157		$	—		$	(17)		$	4		$	129		$	273
Gas distribution cut, purge, and cap		282			—			(10)			11			—			283
Asbestos abatement		38			—			(1)			1			—			38
Renewable generation assets		93			—			—			2			—			95
Gas wells plug and abandon		35			—			(2)			1			—			34
Total Consumers		$	605		$	—		$	(30)		$	19		$	129		$	723