SEGMENT AND RELATED INFORMATION

DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure:

Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.2 million residential, commercial, and industrial customers in southeastern Michigan.

Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.

Gas Storage and Pipelines consists of natural gas pipeline, gathering, and storage businesses.

Power and Industrial Projects is comprised primarily of projects that deliver energy and utility-type products and services to industrial, commercial, and institutional customers, produce reduced emissions fuel, and sell electricity from renewable energy projects.

Energy Trading consists of energy marketing and trading operations.

Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds energy-related investments.

The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company.

Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider and primarily consists of the sale of reduced emissions fuel, power sales, and natural gas sales in the following segments:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
	(In millions)
Electric	$	11	$	15	$	36	$	32
Gas	1		5		6		8
Gas Storage and Pipelines	10		2		32		7
Power and Industrial Projects	138		178		462		476
Energy Trading	8		10		27		28
Corporate and Other	1		—		2		2
	$	169	$	210	$	565	$	553

Financial data of DTE Energy's business segments follows:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(In millions)
Operating Revenues — Utility operations
Electric	$	1,434		$	1,608		$	3,827		$	3,976
Gas	152			160			929			911
Operating Revenues — Non-utility operations
Gas Storage and Pipelines	115			63			333			199
Power and Industrial Projects	537			524			1,592			1,414
Energy Trading	1,174			782			3,217			1,807
Corporate and Other	2			1			3			2
Reconciliation and Eliminations	(169		)	(210		)	(565		)	(553		)
Total	$	3,245		$	2,928		$	9,336		$	7,756



Net Income (Loss) Attributable to DTE Energy by Segment:
Electric	$	219		$	285		$	463		$	547
Gas	(15		)	(4		)	93			96
Gas Storage and Pipelines	36			28			121			93
Power and Industrial Projects	44			34			104			66
Energy Trading	1			(4		)	97			(34		)
Corporate and Other	(15		)	(1		)	(31		)	(31		)
Net Income Attributable to DTE Energy Company	$	270		$	338		$	847		$	737