Reportable Segments

3 Months Ended

Mar. 31, 2013

Reportable Segments

9:REPORTABLE SEGMENTS

Reportable segments consist of business units defined by the products and services they offer.  CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.  The reportable segments for CMS Energy and Consumers are:

CMS Energy:

· electric utility, consisting of regulated activities associated with the generation and distribution of electricity in Michigan;

· gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan;

· enterprises, consisting of various subsidiaries engaging primarily in domestic independent power production; and

· other, including EnerBank, corporate interest and other expenses, and discontinued operations.

Consumers:

· electric utility, consisting of regulated activities associated with the generation and distribution of electricity in Michigan;

· gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan; and

· other, including a consolidated special-purpose entity for the sale of accounts receivable.

Presented in the following tables is financial information by reportable segment:

In Millions
Three Months Ended March 31	2013			2012
CMS Energy, including Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Enterprises			44			54
Other			16			14
Total operating revenue – CMS Energy		$	1,979		$	1,743
Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Total operating revenue – Consumers		$	1,919		$	1,675
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	66		$	21
Gas utility			96			55
Enterprises			4			5
Other			(22)			(14)
Total net income available to common stockholders – CMS Energy		$	144		$	67
Consumers
Net income available to common stockholder
Electric utility		$	66		$	21
Gas utility			96			55
Total net income available to common stockholder – Consumers		$	162		$	76

In Millions
	March 31, 2013			December 31, 2012
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Enterprises			113			113
Other			38			38
Total plant, property, and equipment, gross – CMS Energy		$	15,732		$	15,592
Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Other			15			15
Total plant, property, and equipment, gross – Consumers		$	15,596		$	15,456
CMS Energy, including Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Enterprises			181			181
Other			1,750			1,511
Total assets – CMS Energy		$	17,269		$	17,131
Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Other			934			836
Total assets – Consumers		$	16,272		$	16,275

¹ Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

Consumers Energy Company [Member]

Reportable Segments

9:REPORTABLE SEGMENTS

Reportable segments consist of business units defined by the products and services they offer.  CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.  The reportable segments for CMS Energy and Consumers are:

CMS Energy:

· electric utility, consisting of regulated activities associated with the generation and distribution of electricity in Michigan;

· gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan;

· enterprises, consisting of various subsidiaries engaging primarily in domestic independent power production; and

· other, including EnerBank, corporate interest and other expenses, and discontinued operations.

Consumers:

· electric utility, consisting of regulated activities associated with the generation and distribution of electricity in Michigan;

· gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan; and

· other, including a consolidated special-purpose entity for the sale of accounts receivable.

Presented in the following tables is financial information by reportable segment:

In Millions
Three Months Ended March 31	2013			2012
CMS Energy, including Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Enterprises			44			54
Other			16			14
Total operating revenue – CMS Energy		$	1,979		$	1,743
Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Total operating revenue – Consumers		$	1,919		$	1,675
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	66		$	21
Gas utility			96			55
Enterprises			4			5
Other			(22)			(14)
Total net income available to common stockholders – CMS Energy		$	144		$	67
Consumers
Net income available to common stockholder
Electric utility		$	66		$	21
Gas utility			96			55
Total net income available to common stockholder – Consumers		$	162		$	76

In Millions
	March 31, 2013			December 31, 2012
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Enterprises			113			113
Other			38			38
Total plant, property, and equipment, gross – CMS Energy		$	15,732		$	15,592
Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Other			15			15
Total plant, property, and equipment, gross – Consumers		$	15,596		$	15,456
CMS Energy, including Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Enterprises			181			181
Other			1,750			1,511
Total assets – CMS Energy		$	17,269		$	17,131
Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Other			934			836
Total assets – Consumers		$	16,272		$	16,275

¹ Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.