Contingencies And Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Site Contingency [Line Items]

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2018:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from stock and asset sale agreements1	various	indefinite		$	153		$	3
Guarantees2	various	indefinite		39			—
Consumers
Guarantee2	July 2011	indefinite		$	30		$	—

¹  These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

²  At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee. For additional details on this guarantee, see Note 21, Variable Interest Entities.

Purchase Obligations

Presented in the following table are CMS Energy’s and Consumers’ contractual purchase obligations at December 31, 2018 for each of the periods shown:

In Millions
	Payments Due
	Total			2019			2020			2021			2022			2023			Beyond 2023
CMS Energy, including Consumers
Total PPAs		$	9,930		$	1,049		$	1,051		$	1,043		$	744		$	638		$	5,405
Other		2,341			1,276			405			163			137			117			243
Consumers
PPAs
MCV PPA		$	3,880		$	330		$	318		$	289		$	275		$	279		$	2,389
Palisades PPA		1,280			378			388			400			114			—			—
Related-party PPAs		692			85			85			86			86			87			263
Other PPAs		4,078			256			260			268			269			272			2,753
Total PPAs		$	9,930		$	1,049		$	1,051		$	1,043		$	744		$	638		$	5,405
Other		2,075			1,237			373			148			124			103			90

Consumers Energy Company

Site Contingency [Line Items]

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2018:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from stock and asset sale agreements1	various	indefinite		$	153		$	3
Guarantees2	various	indefinite		39			—
Consumers
Guarantee2	July 2011	indefinite		$	30		$	—

¹  These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

²  At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee. For additional details on this guarantee, see Note 21, Variable Interest Entities.

Purchase Obligations

Presented in the following table are CMS Energy’s and Consumers’ contractual purchase obligations at December 31, 2018 for each of the periods shown:

In Millions
	Payments Due
	Total			2019			2020			2021			2022			2023			Beyond 2023
CMS Energy, including Consumers
Total PPAs		$	9,930		$	1,049		$	1,051		$	1,043		$	744		$	638		$	5,405
Other		2,341			1,276			405			163			137			117			243
Consumers
PPAs
MCV PPA		$	3,880		$	330		$	318		$	289		$	275		$	279		$	2,389
Palisades PPA		1,280			378			388			400			114			—			—
Related-party PPAs		692			85			85			86			86			87			263
Other PPAs		4,078			256			260			268			269			272			2,753
Total PPAs		$	9,930		$	1,049		$	1,051		$	1,043		$	744		$	638		$	5,405
Other		2,075			1,237			373			148			124			103			90

Manufactured Gas Plant | Consumers Energy Company

Site Contingency [Line Items]

Expected Remediation Costs By Year

Consumers expects to pay the following amounts for remediation and other response activity costs in each of the next five years:

In Millions
	2019			2020			2021			2022			2023
Consumers
Remediation and other response activity costs		$	12		$	16		$	21		$	7		$	2

Bay Harbor

Site Contingency [Line Items]

Expected Remediation Costs By Year

The undiscounted amount of the remaining obligation is $58 million. CMS Energy expects to pay the following amounts for long-term liquid disposal and operating and maintenance costs in each of the next five years:

In Millions
	2019			2020			2021			2022			2023
CMS Energy
Long-term liquid disposal and operating and maintenance costs		$	4		$	4		$	4		$	4		$	4