Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 1,879	$ 1,975
Receivables —
Customer accounts receivable	1,613	1,614
Energy marketing receivables	273	428
Unbilled revenues	553	599
Other accounts and notes receivable	549	817
Accumulated provision for uncollectible accounts	(89)	(49)
Materials and supplies	1,490	1,388
Fossil fuel for generation	609	521
Natural gas for sale	282	479
Prepaid expenses	502	314
Assets from risk management activities, net of collateral	120	183
Regulatory assets – asset retirement obligations	252	287
Other regulatory assets	846	885
Assets held for sale	0	188
Other current assets	190	188
Total current assets	9,069	9,817
Property, Plant, and Equipment:
In service	107,320	105,114
Less: Accumulated depreciation	31,477	30,765
Plant in service, net of depreciation	75,843	74,349
Nuclear fuel, at amortized cost	835	851
Construction work in progress	8,351	7,880
Total property, plant, and equipment	85,029	83,080
Other Property and Investments:
Goodwill	5,280	5,280
Equity investments in unconsolidated subsidiaries	1,363	1,303
Other intangible assets, net of amortization	511	536
Nuclear decommissioning trusts, at fair value	2,014	2,036
Leveraged leases	647	788
Miscellaneous property and investments	379	391
Total other property and investments	10,194	10,334
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,776	1,800
Deferred charges related to income taxes	797	798
Unamortized loss on reacquired debt	290	300
Regulatory assets – asset retirement obligations, deferred	4,586	4,094
Other regulatory assets, deferred	6,606	6,805
Assets held for sale, deferred	0	601
Other deferred charges and assets	1,384	1,071
Total deferred charges and other assets	15,439	15,469
Total Assets	119,731	118,700
Current Liabilities:
Securities due within one year	1,596	2,989
Notes payable	1,185	2,055
Energy marketing trade payables	284	442
Accounts payable —
Accounts payable	1,787	2,115
Customer deposits	490	496
Accrued taxes —
Accrued income taxes	27	0
Other accrued taxes	517	659
Accrued interest	499	474
Accrued compensation	666	992
Asset retirement obligations	575	504
Other regulatory liabilities	558	756
Liabilities held for sale	0	5
Operating lease obligations	235	229
Over recovered fuel clause revenues	109	0
Other current liabilities	915	830
Total current liabilities	9,334	12,546
Long-term Debt	45,138	41,798
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	8,298	7,888
Deferred credits related to income taxes	5,860	6,078
Accumulated deferred ITCs	2,271	2,291
Employee benefit obligations	1,789	1,814
Operating lease obligations, deferred	1,611	1,615
Asset retirement obligations, deferred	9,699	9,282
Accrued environmental remediation	220	234
Other cost of removal obligations	2,258	2,239
Other regulatory liabilities, deferred	371	256
Other deferred credits and liabilities	630	609
Total deferred credits and other liabilities	33,007	32,306
Total Liabilities	87,479	86,650
Redeemable Preferred Stock of Subsidiaries	291	291
Common Stockholder's Equity (See accompanying statements)	31,961	31,759
Total Liabilities and Stockholders' Equity	119,731	118,700
ALABAMA POWER CO
Current Assets:
Cash and cash equivalents	901	894
Receivables —
Customer accounts receivable	407	425
Unbilled revenues	153	134
Affiliated	37	37
Other accounts and notes receivable	51	72
Accumulated provision for uncollectible accounts	(21)	(22)
Materials and supplies	545	512
Fossil fuel for generation	250	212
Prepaid expenses	101	50
Other regulatory assets	226	242
Other current assets	55	30
Total current assets	2,705	2,586
Property, Plant, and Equipment:
In service	30,619	30,023
Less: Accumulated depreciation	9,647	9,540
Plant in service, net of depreciation	20,972	20,483
Nuclear fuel, at amortized cost	275	296
Construction work in progress	830	890
Total property, plant, and equipment	22,077	21,669
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	63	66
Nuclear decommissioning trusts, at fair value	978	1,023
Miscellaneous property and investments	131	128
Total other property and investments	1,172	1,217
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	113	132
Deferred charges related to income taxes	243	244
Deferred under recovered regulatory clause revenues	41	40
Regulatory assets – asset retirement obligations, deferred	1,491	1,019
Other regulatory assets, deferred	1,922	1,976
Other deferred charges and assets	362	269
Total deferred charges and other assets	4,172	3,680
Total Assets	30,126	29,152
Current Liabilities:
Securities due within one year	496	251
Accounts payable —
Affiliated	261	316
Other	312	514
Customer deposits	103	100
Accrued taxes —
Accrued taxes	274	78
Accrued interest	93	92
Accrued compensation	156	216
Asset retirement obligations	254	195
Other regulatory liabilities	73	193
Other current liabilities	101	105
Total current liabilities	2,123	2,060
Long-term Debt	8,028	8,270
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	3,325	3,260
Deferred credits related to income taxes	1,932	1,960
Accumulated deferred ITCs	97	100
Employee benefit obligations	200	206
Operating lease obligations, deferred	91	107
Asset retirement obligations, deferred	3,722	3,345
Other cost of removal obligations	392	412
Other regulatory liabilities, deferred	217	146
Other deferred credits and liabilities	38	40
Total deferred credits and other liabilities	10,014	9,576
Total Liabilities	20,165	19,906
Redeemable Preferred Stock	291	291
Common Stockholder's Equity (See accompanying statements)	9,670	8,955
Total Liabilities and Stockholders' Equity	30,126	29,152
GEORGIA POWER CO
Current Assets:
Cash and cash equivalents	386	52
Receivables —
Customer accounts receivable	580	533
Unbilled revenues	261	203
Joint owner accounts receivable	104	136
Affiliated	28	21
Other accounts and notes receivable	42	209
Accumulated provision for uncollectible accounts	(28)	(2)
Materials and supplies	558	501
Fossil fuel for generation	324	272
Prepaid expenses	58	63
Regulatory assets – storm damage reserves	213	213
Regulatory assets – asset retirement obligations	215	254
Other regulatory assets	276	263
Other current assets	62	77
Total current assets	3,079	2,795
Property, Plant, and Equipment:
In service	38,852	38,137
Less: Accumulated depreciation	11,964	11,753
Plant in service, net of depreciation	26,888	26,384
Nuclear fuel, at amortized cost	560	555
Construction work in progress	6,254	5,650
Total property, plant, and equipment	33,702	32,589
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	50	52
Nuclear decommissioning trusts, at fair value	1,036	1,013
Miscellaneous property and investments	65	64
Total other property and investments	1,151	1,129
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,382	1,428
Deferred charges related to income taxes	519	519
Regulatory assets – asset retirement obligations, deferred	2,894	2,865
Other regulatory assets, deferred	2,610	2,716
Other deferred charges and assets	488	500
Total deferred charges and other assets	7,893	8,028
Total Assets	45,825	44,541
Current Liabilities:
Securities due within one year	536	1,025
Notes payable	465	365
Accounts payable —
Affiliated	493	512
Other	672	711
Customer deposits	284	283
Accrued taxes —
Accrued taxes	442	407
Accrued interest	133	118
Accrued compensation	152	233
Asset retirement obligations	279	265
Other regulatory liabilities	290	447
Operating lease obligations	150	144
Other current liabilities	206	187
Total current liabilities	4,211	4,697
Long-term Debt	12,337	10,791
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	3,190	3,257
Deferred credits related to income taxes	2,730	2,862
Accumulated deferred ITCs	273	255
Employee benefit obligations	500	540
Operating lease obligations, deferred	1,258	1,282
Asset retirement obligations, deferred	5,556	5,519
Other deferred credits and liabilities	333	273
Total deferred credits and other liabilities	13,840	13,988
Total Liabilities	30,388	29,476
Common Stockholder's Equity (See accompanying statements)	15,437	15,065
Total Liabilities and Stockholders' Equity	45,825	44,541
MISSISSIPPI POWER CO
Current Assets:
Cash and cash equivalents	34	286
Receivables —
Customer accounts receivable	39	35
Unbilled revenues	41	39
Affiliated	31	27
Other accounts and notes receivable	24	26
Materials and supplies	62	61
Fossil fuel for generation	24	26
Other regulatory assets	73	99
Other current assets	8	10
Total current assets	336	609
Property, Plant, and Equipment:
In service	4,948	4,857
Less: Accumulated depreciation	1,522	1,463
Plant in service, net of depreciation	3,426	3,394
Construction work in progress	132	126
Total property, plant, and equipment	3,558	3,520
Other Property and Investments:
Total other property and investments	129	131
Deferred Charges and Other Assets:
Deferred charges related to income taxes	32	32
Regulatory assets – asset retirement obligations, deferred	200	210
Other regulatory assets, deferred	376	360
Accumulated deferred income taxes	134	139
Other deferred charges and assets	56	34
Total deferred charges and other assets	798	775
Total Assets	4,821	5,035
Current Liabilities:
Securities due within one year	0	281
Notes payable	4	0
Accounts payable —
Affiliated	75	76
Other	44	75
Accrued taxes —
Accrued taxes	84	105
Accrued interest	15	15
Accrued compensation	21	35
Asset retirement obligations	28	33
Other regulatory liabilities	47	21
Over recovered fuel clause revenues	29	29
Other current liabilities	59	64
Total current liabilities	406	734
Long-term Debt	1,404	1,308
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	422	424
Deferred credits related to income taxes	310	352
Employee benefit obligations	97	99
Asset retirement obligations, deferred	157	157
Other cost of removal obligations	193	189
Other regulatory liabilities, deferred	66	76
Other deferred credits and liabilities	42	44
Total deferred credits and other liabilities	1,287	1,341
Total Liabilities	3,097	3,383
Common Stockholder's Equity (See accompanying statements)	1,724	1,652
Total Liabilities and Stockholders' Equity	4,821	5,035
SOUTHERN POWER CO
Current Assets:
Cash and cash equivalents	154	279
Receivables —
Customer accounts receivable	160	107
Affiliated	46	30
Other accounts and notes receivable	55	73
Materials and supplies	203	191
Prepaid income taxes	402	36
Other current assets	23	43
Total current assets	1,043	759
Property, Plant, and Equipment:
In service	13,634	13,270
Less: Accumulated depreciation	2,689	2,464
Plant in service, net of depreciation	10,945	10,806
Construction work in progress	314	515
Total property, plant, and equipment	11,259	11,321
Other Property and Investments:
Intangible assets, net of amortization	312	322
Equity investments in unconsolidated subsidiaries	19	28
Miscellaneous property and investments	19	28
Total other property and investments	331	350
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	397	369
Prepaid LTSAs	140	128
Assets held for sale, deferred	0	601
Accumulated deferred income taxes	156	551
Income taxes receivable, non-current	11	5
Other deferred charges and assets	220	216
Total deferred charges and other assets	924	1,870
Total Assets	13,557	14,300
Current Liabilities:
Securities due within one year	525	824
Notes payable	92	549
Accounts payable —
Affiliated	52	56
Other	59	85
Accrued taxes —
Accrued income taxes	10	0
Other accrued taxes	26	26
Accrued interest	23	32
Other current liabilities	127	132
Total current liabilities	914	1,704
Long-term Debt	3,572	3,574
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	114	115
Accumulated deferred ITCs	1,701	1,731
Operating lease obligations, deferred	404	376
Other deferred credits and liabilities	193	178
Total deferred credits and other liabilities	2,412	2,400
Total Liabilities	6,898	7,678
Common Stockholder's Equity (See accompanying statements)	6,659	6,622
Total Liabilities and Stockholders' Equity	13,557	14,300
SOUTHERN Co GAS
Current Assets:
Cash and cash equivalents	120	46
Receivables —
Customer accounts receivable	269	323
Energy marketing receivables	273	428
Unbilled revenues	57	183
Affiliated	5	5
Other accounts and notes receivable	117	114
Accumulated provision for uncollectible accounts	(35)	(18)
Natural gas for sale	282	479
Prepaid expenses	60	65
Assets from risk management activities, net of collateral	103	177
Other regulatory assets	86	92
Assets held for sale	0	171
Other current assets	49	41
Total current assets	1,386	2,106
Property, Plant, and Equipment:
In service	16,718	16,344
Less: Accumulated depreciation	4,704	4,650
Plant in service, net of depreciation	12,014	11,694
Construction work in progress	770	613
Total property, plant, and equipment	12,784	12,307
Other Property and Investments:
Goodwill	5,015	5,015
Equity investments in unconsolidated subsidiaries	1,308	1,251
Other intangible assets, net of amortization	60	70
Miscellaneous property and investments	20	20
Total other property and investments	6,403	6,356
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	88	93
Other regulatory assets, deferred	581	618
Other deferred charges and assets	258	207
Total deferred charges and other assets	927	918
Total Assets	21,500	21,687
Current Liabilities:
Securities due within one year	31	0
Notes payable	329	650
Energy marketing trade payables	284	442
Accounts payable —
Affiliated	50	41
Other	290	315
Customer deposits	86	96
Accrued taxes —
Accrued income taxes	32	0
Other accrued taxes	65	71
Accrued interest	53	52
Accrued compensation	68	100
Liabilities from risk management activities, net of collateral	39	21
Other regulatory liabilities	146	94
Other current liabilities	122	128
Total current liabilities	1,595	2,010
Long-term Debt	5,796	5,845
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	1,256	1,219
Deferred credits related to income taxes	859	874
Employee benefit obligations	253	265
Operating lease obligations, deferred	73	78
Accrued environmental remediation	220	233
Other cost of removal obligations	1,639	1,606
Other deferred credits and liabilities	40	51
Total deferred credits and other liabilities	4,340	4,326
Total Liabilities	11,731	12,181
Common Stockholder's Equity (See accompanying statements)	9,769	9,506
Total Liabilities and Stockholders' Equity	$ 21,500	$ 21,687