Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Revenues:
Retail electric revenues	$ 3,568	$ 3,394
Wholesale electric revenues	619	531
Other electric revenues	165	175
Natural gas revenues (includes alternative revenue programs of $(24) and $9, respectively)	1,607	1,530
Alternative revenue programs	24	(9)
Other revenues	413	141
Total operating revenues	6,372	5,771
Operating Expenses:
Fuel	1,101	996
Purchased power	267	179
Cost of natural gas	720	719
Cost of other sales	289	88
Other operations and maintenance	1,451	1,383
Depreciation and amortization	769	716
Taxes other than income taxes	355	330
Estimated loss on Kemper IGCC	44	108
Total operating expenses	4,996	4,519
Operating Income	1,376	1,252
Other Income and (Expense):
Allowance for equity funds used during construction	30	57
Earnings from equity method investments	41	39
Interest expense, net of amounts capitalized	(458)	(416)
Other income (expense), net	60	48
Total other income and (expense)	(327)	(272)
Earnings Before Income Taxes	1,049	980
Income taxes	113	315
Consolidated Net Income	936	665
Less:
Dividends on preferred and preference stock of subsidiaries	4	11
Net loss attributable to noncontrolling interests	(6)	(4)
Net Income	$ 938	$ 658
Earnings per share —
Basic (in dollars per share)	$ 0.93	$ 0.66
Diluted (in dollars per share)	$ 0.92	$ 0.66
Average number of shares of common stock outstanding (in millions)
Basic (in shares)	1,011	993
Diluted (in shares)	1,016	1,000
Cash dividends paid per share of common stock (in dollars per share)	$ 0.58	$ 0.56
ALABAMA POWER CO
Operating Revenues:
Retail electric revenues	$ 1,285	$ 1,227
Wholesale revenues, non-affiliates	74	66
Wholesale revenues, affiliates	51	33
Other revenues	63	56
Total operating revenues	1,473	1,382
Operating Expenses:
Fuel	326	298
Purchased power, non-affiliates	64	34
Purchased power, affiliates	37	28
Other operations and maintenance	387	384
Depreciation and amortization	189	181
Taxes other than income taxes	98	96
Total operating expenses	1,101	1,021
Operating Income	372	361
Other Income and (Expense):
Allowance for equity funds used during construction	13	8
Interest expense, net of amounts capitalized	(79)	(75)
Other income (expense), net	5	10
Total other income and (expense)	(61)	(57)
Earnings Before Income Taxes	311	304
Income taxes	82	126
Consolidated Net Income	229	178
Less:
Dividends on preferred and preference stock of subsidiaries	4	4
Net Income	225	174
GEORGIA POWER CO
Operating Revenues:
Retail electric revenues	1,798	1,689
Wholesale revenues, non-affiliates	44	39
Wholesale revenues, affiliates	10	8
Other revenues	109	96
Total operating revenues	1,961	1,832
Operating Expenses:
Fuel	412	371
Purchased power, non-affiliates	121	88
Purchased power, affiliates	171	172
Other operations and maintenance	408	399
Depreciation and amortization	228	221
Taxes other than income taxes	108	98
Total operating expenses	1,448	1,349
Operating Income	513	483
Other Income and (Expense):
Interest expense, net of amounts capitalized	(106)	(101)
Other income (expense), net	38	38
Total other income and (expense)	(68)	(63)
Earnings Before Income Taxes	445	420
Income taxes	93	156
Consolidated Net Income	352	264
Less:
Dividends on preferred and preference stock of subsidiaries	0	4
Net Income	352	260
GULF POWER CO
Operating Revenues:
Retail electric revenues	290	279
Wholesale revenues, non-affiliates	13	17
Wholesale revenues, affiliates	28	37
Other revenues	17	17
Total operating revenues	348	350
Operating Expenses:
Fuel	82	108
Purchased power, non-affiliates	46	34
Other operations and maintenance	76	86
Depreciation and amortization	47	18
Taxes other than income taxes	30	27
Loss on Plant Scherer Unit 3	0	33
Total operating expenses	281	306
Operating Income	67	44
Other Income and (Expense):
Interest expense, net of amounts capitalized	(13)	(12)
Other income (expense), net	1	2
Total other income and (expense)	(12)	(10)
Earnings Before Income Taxes	55	34
Income taxes	13	14
Consolidated Net Income	42	20
Less:
Dividends on preferred and preference stock of subsidiaries	0	2
Net Income	42	18
MISSISSIPPI POWER CO
Operating Revenues:
Retail electric revenues	194	200
Wholesale revenues, non-affiliates	63	62
Wholesale revenues, affiliates	34	5
Other revenues	11	5
Total operating revenues	302	272
Operating Expenses:
Fuel	98	78
Purchased power, non-affiliates	9	8
Other operations and maintenance	75	76
Depreciation and amortization	41	40
Taxes other than income taxes	28	26
Estimated loss on Kemper IGCC	44	108
Total operating expenses	295	336
Operating Income	7	(64)
Other Income and (Expense):
Allowance for equity funds used during construction	0	35
Interest expense, net of amounts capitalized	(19)	(19)
Other income (expense), net	1	1
Total other income and (expense)	(18)	17
Earnings Before Income Taxes	(11)	(47)
Income taxes	(4)	(27)
Consolidated Net Income	(7)	(20)
Less:
Dividends on preferred and preference stock of subsidiaries	0	0
Net Income	(7)	(20)
SOUTHERN POWER CO
Operating Revenues:
Wholesale revenues, non-affiliates	424	347
Wholesale revenues, affiliates	83	100
Other revenues	2	3
Total operating revenues	509	450
Operating Expenses:
Fuel	169	132
Purchased power, non-affiliates	61	30
Other operations and maintenance	93	92
Depreciation and amortization	114	119
Taxes other than income taxes	12	12
Total operating expenses	449	385
Operating Income	60	65
Other Income and (Expense):
Interest expense, net of amounts capitalized	(47)	(50)
Other income (expense), net	3	(1)
Total other income and (expense)	(44)	(51)
Earnings Before Income Taxes	16	14
Income taxes	(99)	(52)
Consolidated Net Income	115	66
Less:
Net loss attributable to noncontrolling interests	(6)	(4)
Net Income	121	70
SOUTHERN Co GAS
Operating Revenues:
Natural gas revenues (includes alternative revenue programs of $(24) and $9, respectively)	1,631	1,521
Alternative revenue programs	(24)	9
Other revenues	32	30
Total operating revenues	1,639	1,560
Operating Expenses:
Cost of natural gas	720	719
Cost of other sales	7	7
Other operations and maintenance	276	255
Depreciation and amortization	129	120
Taxes other than income taxes	77	70
Goodwill impairment	42	0
Total operating expenses	1,251	1,171
Operating Income	388	389
Other Income and (Expense):
Earnings from equity method investments	42	39
Interest expense, net of amounts capitalized	(59)	(46)
Other income (expense), net	12	7
Total other income and (expense)	(5)	0
Earnings Before Income Taxes	383	389
Income taxes	104	150
Consolidated Net Income	279	239
Less:
Net Income	$ 279	$ 239