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 is primarily engaged in services related to the gathering, transportation, and storage of natural gas.

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 and pipeline-quality gas 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 June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In millions)
Electric	$	13	$	13	$	26	$	25
Gas	4		2		6		5
Gas Storage and Pipelines	14		15		22		22
Power and Industrial Projects	162		156		317		324
Energy Trading	5		8		12		19
Corporate and Other	—		—		1		1
	$	198	$	194	$	384	$	396

Financial data of DTE Energy's business segments follows:



	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In millions)
Operating Revenues — Utility operations
Electric	$	1,276		$	1,218		$	2,481		$	2,393
Gas	255			220			805			777
Operating Revenues — Non-utility operations
Gas Storage and Pipelines	122			113			241			218
Power and Industrial Projects	538			507			1,105			1,055
Energy Trading	1,164			991			2,662			2,043
Corporate and Other	2			—			2			1
Reconciliation and Eliminations	(198		)	(194		)	(384		)	(396		)
Total	$	3,159		$	2,855		$	6,912		$	6,091



Net Income (Loss) Attributable to DTE Energy by Segment:
Electric	$	163		$	138		$	303		$	244
Gas	14			1			118			108
Gas Storage and Pipelines	60			40			122			85
Power and Industrial Projects	43			30			88			60
Energy Trading	(5		)	—			26			96
Corporate and Other	(41		)	(32		)	(62		)	(16		)
Net Income Attributable to DTE Energy Company	$	234		$	177		$	595		$	577