Segment and Related Information

3 Months Ended

Mar. 31, 2018

Southern Company

The primary businesses of the Southern Company system are electricity sales by the traditional electric operating companies and Southern Power and the distribution of natural gas by Southern Company Gas. The four traditional electric operating companies – Alabama Power, Georgia Power, Gulf Power, and Mississippi Power – are vertically integrated utilities providing electric service in four Southeastern states. Southern Power develops, constructs, acquires, owns, and manages power generation assets, including renewable energy projects, and sells electricity at market-based rates in the wholesale market. Southern Company Gas distributes natural gas through the seven natural gas distribution utilities in seven states and is involved in several other complementary businesses including gas marketing services, wholesale gas services, and gas midstream operations.

Southern Company's reportable business segments are the sale of electricity by the four traditional electric operating companies, the sale of electricity in the competitive wholesale market by Southern Power, and the sale of natural gas and other complementary products and services by Southern Company Gas. Revenues from sales by Southern Power to the traditional electric operating companies were $83 million and $100 million for the three months ended March 31, 2018 and 2017, respectively. Revenues from sales of natural gas from Southern Company Gas to Southern Power were $36 million and $23 million for the three months ended March 31, 2018 and 2017, respectively. The "All Other" column includes the Southern Company parent entity, which does not allocate operating expenses to business segments. Also, this category includes segments below the quantitative threshold for separate disclosure. These segments include providing energy technologies and services to electric utilities and large industrial, commercial, institutional, and municipal customers; as well as investments in telecommunications and leveraged lease projects. All other inter-segment revenues are not material.

Financial data for business segments and products and services for the three months ended March 31, 2018 and 2017 was as follows:



	Electric Utilities
	Traditional Electric Operating Companies		Southern Power		Eliminations			Total		Southern Company Gas		All Other			Eliminations			Consolidated
	(in millions)
Three Months Ended March 31, 2018:
Operating revenues	$	3,979	$	509	$	(106	)	$	4,382	$	1,639	$	401		$	(50	)	$	6,372
Segment net income (loss)^(a)(b)(c)	612		121		—			733		279		(74		)	—			938
Total assets at March 31, 2018	$	72,893	$	15,182	$	(262	)	$	87,813	$	22,568	$	2,733		$	(1,547	)	$	111,567
Three Months Ended March 31, 2017:
Operating revenues	$	3,786	$	450	$	(105	)	$	4,131	$	1,560	$	123		$	(43	)	$	5,771
Segment net income (loss)^(a)(b)(d)	432		70		—			502		239		(84		)	1			658
Total assets at December 31, 2017	$	72,204	$	15,206	$	(325	)	$	87,085	$	22,987	$	2,552		$	(1,619	)	$	111,005


(a)	Attributable to Southern Company.

(b)

Segment net income (loss) for the traditional electric operating companies includes pre-tax charges for estimated losses on the Kemper IGCC of $44 million ($33 million after tax) and $108 million ($67 million after tax) for the three months ended March 31, 2018 and 2017, respectively. See Note 3 to the financial statements of Southern Company under "Kemper County Energy Facility" in Item 8 of the Form 10-K and Note (B) under "Kemper County Energy Facility" for additional information.


(c)	Segment net income (loss) for Southern Company Gas includes a goodwill impairment charge of $42 million for the three months ended March 31, 2018 in contemplation of the sale of Pivotal Home Solutions. See Note (J) under "Southern Company Gas – Proposed Sale of Pivotal Home Solutions" for additional information.

(d)

Segment net income (loss) for the traditional electric operating companies also includes a pre-tax charge for the write-down of Gulf Power's ownership of Plant Scherer Unit 3 of $33 million ($20 million after tax) for the three months ended March 31, 2017. See Note 3 to the financial statements of Southern Company under "Regulatory Matters – Gulf Power – Retail Base Rate Cases" in Item 8 of the Form 10-K for additional information.

Products and Services



	Electric Utilities' Revenues
Period	Retail		Wholesale		Other		Total
	(in millions)
Three Months Ended March 31, 2018	$	3,568	$	619	$	195	$	4,382
Three Months Ended March 31, 2017	3,394		531		206		4,131



	Southern Company Gas' Revenues
Period	Gas Distribution Operations		Gas Marketing Services		Other		Total
	(in millions)
Three Months Ended March 31, 2018	$	1,200	$	271	$	168	$	1,639
Three Months Ended March 31, 2017	1,132		288		140		1,560

Southern Company Gas

Southern Company Gas manages its business through four reportable segments – gas distribution operations, gas marketing services, wholesale gas services, and gas midstream operations. The non-reportable segments are combined and presented as all other.

Gas distribution operations is the largest component of Southern Company Gas' business and includes natural gas local distribution utilities that construct, manage, and maintain intrastate natural gas pipelines and gas distribution facilities in seven states. Gas marketing services includes natural gas marketing to end-use customers primarily in Georgia and Illinois. Additionally, gas marketing services provides home equipment protection products and services. Wholesale gas services provides natural gas asset management and/or related logistics services for each of Southern Company Gas' utilities except Nicor Gas as well as for non-affiliated companies. Additionally, wholesale gas services engages in natural gas storage and gas pipeline arbitrage and related activities. Gas midstream operations primarily consists of Southern Company Gas' pipeline investments, with storage and fuel operations also aggregated into this segment. The all other column includes segments below the quantitative threshold for separate disclosure, including the subsidiaries that fall below the quantitative threshold for separate disclosure.

Business segment financial data for the three months ended March 31, 2018 and 2017 was as follows:



	Gas Distribution Operations		Gas Marketing Services^(a)		Wholesale Gas Services^(b)		Gas Midstream Operations		Total		All Other			Eliminations			Consolidated
	(in millions)
Three Months Ended March 31, 2018:
Operating revenues	$	1,212	$	271	$	166	$	22	$	1,671	$	1		$	(33	)	$	1,639
Segment net income	149		13		104		23		289		(10		)	—			279
Total assets at March 31, 2018:	18,332		2,144		903		2,263		23,642		11,839			(12,913		)	22,568
Three Months Ended March 31, 2017:
Operating revenues	$	1,180	$	288	$	131	$	25	$	1,624	$	2		$	(66	)	$	1,560
Segment net income	117		31		68		15		231		8			—			239
Total assets at December 31, 2017:	19,358		2,147		1,096		2,241		24,842		12,184			(14,039		)	22,987


(a)	Segment net income for gas marketing services includes a goodwill impairment charge of $42 million for the three months ended March 31, 2018 in contemplation of the sale of Pivotal Home Solutions. See Note (J) under "Southern Company Gas – Proposed Sale of Pivotal Home Solutions" for additional information.


(b)	The revenues for wholesale gas services are netted with costs associated with its energy and risk management activities. A reconciliation of operating revenues and intercompany revenues is shown in the following table.



	Third Party Gross Revenues		Intercompany Revenues		Total Gross Revenues		Less Gross Gas Costs		Operating Revenues
	(in millions)
Three Months Ended March 31, 2018	$	1,938	$	167	$	2,105	$	1,939	$	166
Three Months Ended March 31, 2017	$	1,839	$	136	$	1,975	$	1,844	$	131