Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Change in Asset Retirement Obligation Table

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2011			Incurred			Settled1			Accretion			Revisions			12/31/2012
CMS Energy, including Consumers
Gas treating plant and gas wells		$	1		$	-		$	-		$	-		$	-		$	1
Consumers			253			7			(8)			19			40			311
Total CMS Energy		$	254		$	7		$	(8)		$	19		$	40		$	312
Consumers
Coal ash disposal areas		$	70		$	-		$	(3)		$	7		$	40		$	114
Wells at gas storage fields			1			-			(1)			-			-			-
Asbestos abatement			42			-			(1)			2			-			43
Gas distribution cut, purge,    and cap			140			4			(3)			10			-			151
Wind farm			-			3			-			-			-			3
Total Consumers		$	253		$	7		$	(8)		$	19		$	40		$	311

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2010			Incurred			Settled1			Accretion			Revisions			12/31/2011
CMS Energy, including Consumers
Gas treating plant and gas wells		$	1		$	-		$	-		$	-		$	-		$	1
Consumers			244			(2)			(7)			18			-			253
Total CMS Energy		$	245		$	(2)		$	(7)		$	18		$	-		$	254
Consumers
Coal ash disposal areas		$	66		$	-		$	(2)		$	6		$	-		$	70
Wells at gas storage fields			1			-			-			-			-			1
Indoor gas services relocations			1			-			(1)			-			-			-
Asbestos abatement			40			-			(1)			3			-			42
Gas distribution cut, purge,    and cap			136			(2)			(3)			9			-			140
Total Consumers		$	244		$	(2)		$	(7)		$	18		$	-		$	253

¹Cash payments of $8 million in 2012 and $7 million in 2011 were included in other current and non-current assets and liabilities as a component of net cash provided by operating activities in CMS Energy’s and Consumers’ consolidated statements of cash flow.

Consumers Energy Company [Member]

Schedule of Change in Asset Retirement Obligation Table

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2011			Incurred			Settled1			Accretion			Revisions			12/31/2012
CMS Energy, including Consumers
Gas treating plant and gas wells		$	1		$	-		$	-		$	-		$	-		$	1
Consumers			253			7			(8)			19			40			311
Total CMS Energy		$	254		$	7		$	(8)		$	19		$	40		$	312
Consumers
Coal ash disposal areas		$	70		$	-		$	(3)		$	7		$	40		$	114
Wells at gas storage fields			1			-			(1)			-			-			-
Asbestos abatement			42			-			(1)			2			-			43
Gas distribution cut, purge,    and cap			140			4			(3)			10			-			151
Wind farm			-			3			-			-			-			3
Total Consumers		$	253		$	7		$	(8)		$	19		$	40		$	311

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2010			Incurred			Settled1			Accretion			Revisions			12/31/2011
CMS Energy, including Consumers
Gas treating plant and gas wells		$	1		$	-		$	-		$	-		$	-		$	1
Consumers			244			(2)			(7)			18			-			253
Total CMS Energy		$	245		$	(2)		$	(7)		$	18		$	-		$	254
Consumers
Coal ash disposal areas		$	66		$	-		$	(2)		$	6		$	-		$	70
Wells at gas storage fields			1			-			-			-			-			1
Indoor gas services relocations			1			-			(1)			-			-			-
Asbestos abatement			40			-			(1)			3			-			42
Gas distribution cut, purge,    and cap			136			(2)			(3)			9			-			140
Total Consumers		$	244		$	(2)		$	(7)		$	18		$	-		$	253

¹Cash payments of $8 million in 2012 and $7 million in 2011 were included in other current and non-current assets and liabilities as a component of net cash provided by operating activities in CMS Energy’s and Consumers’ consolidated statements of cash flow.