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 March 31,
	2018		2017
	(In millions)
Electric	$	13	$	12
Gas	2		3
Gas Storage and Pipelines	8		7
Power and Industrial Projects	155		168
Energy Trading	7		11
Corporate and Other	1		1
	$	186	$	202

Financial data of DTE Energy's business segments follows:



	Three Months Ended March 31,
	2018			2017
	(In millions)
Operating Revenues — Utility operations
Electric	$	1,205		$	1,175
Gas	550			557
Operating Revenues — Non-utility operations
Gas Storage and Pipelines	119			105
Power and Industrial Projects	567			548
Energy Trading	1,498			1,052
Corporate and Other	—			1
Reconciliation and Eliminations	(186		)	(202		)
Total	$	3,753		$	3,236



Net Income (Loss) Attributable to DTE Energy by Segment:
Electric	$	140		$	106
Gas	104			107
Gas Storage and Pipelines	62			45
Power and Industrial Projects	45			30
Energy Trading	31			96
Corporate and Other	(21		)	16
Net Income Attributable to DTE Energy Company	$	361		$	400