Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 2,931	$ 1,396
Receivables —
Customer accounts receivable	1,812	1,726
Energy marketing receivables	336	801
Unbilled revenues	591	654
Under recovered fuel clause revenues	0	115
Other accounts and notes receivable	693	813
Accumulated provision for uncollectible accounts	(47)	(50)
Materials and supplies	1,412	1,465
Fossil fuel for generation	437	405
Natural gas for sale	475	524
Prepaid expenses	279	432
Assets from risk management activities, net of collateral	116	222
Other regulatory assets	657	525
Assets held for sale	17	393
Other current assets	208	162
Total current assets	9,917	9,583
Property, Plant, and Equipment:
In service	103,529	103,706
Less: Accumulated depreciation	30,469	31,038
Plant in service, net of depreciation	73,060	72,668
Nuclear fuel, at amortized cost	849	875
Construction work in progress	7,804	7,254
Total property, plant, and equipment	81,713	80,797
Other Property and Investments:
Goodwill	5,280	5,315
Equity investments in unconsolidated subsidiaries	1,540	1,580
Other intangible assets, net of amortization	550	613
Nuclear decommissioning trusts, at fair value	1,965	1,721
Leveraged leases	799	798
Miscellaneous property and investments	394	269
Total other property and investments	10,528	10,296
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,818
Deferred charges related to income taxes	796	794
Unamortized loss on reacquired debt	307	323
Regulatory assets – asset retirement obligations	4,436	2,933
Other regulatory assets, deferred	6,289	5,375
Assets held for sale, deferred	631	5,350
Other deferred charges and assets	1,156	1,463
Total deferred charges and other assets	15,433	16,238
Total Assets	117,591	116,914
Current Liabilities:
Securities due within one year	3,313	3,198
Notes payable	542	2,915
Energy marketing trade payables	368	856
Accounts payable —
Accounts payable	1,898	2,580
Customer deposits	494	522
Accrued taxes —
Accrued income taxes	179	21
Other accrued taxes	689	635
Accrued interest	386	472
Accrued compensation	798	1,030
Asset retirement obligations	433	404
Other regulatory liabilities	318	376
Liabilities held for sale	6	425
Operating lease obligations	229
Other current liabilities	881	852
Total current liabilities	10,534	14,286
Long-term Debt	42,098	40,736
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	7,737	6,558
Deferred credits related to income taxes	6,356	6,460
Accumulated deferred ITCs	2,306	2,372
Employee benefit obligations	1,999	2,147
Operating lease obligations, deferred	1,601
Asset retirement obligations, deferred	9,527	8,990
Accrued environmental remediation	241	268
Other cost of removal obligations	2,263	2,297
Other regulatory liabilities, deferred	265	169
Liabilities held for sale, deferred	20	2,836
Other deferred credits and liabilities	562	465
Total deferred credits and other liabilities	32,877	32,562
Total Liabilities	85,509	87,584
Redeemable Preferred Stock of Subsidiaries	291	291
Total stockholders' equity	31,791	29,039
Total Liabilities and Stockholders' Equity	117,591	116,914
ALABAMA POWER CO
Current Assets:
Cash and cash equivalents	1,337	313
Receivables —
Customer accounts receivable	501	403
Unbilled revenues	172	150
Other accounts and notes receivable	70	51
Accumulated provision for uncollectible accounts	(21)	(10)
Affiliated	48	94
Materials and supplies	524	546
Fossil fuel for generation	163	141
Prepaid expenses	64	66
Other regulatory assets	204	137
Other current assets	24	18
Total current assets	3,086	1,909
Property, Plant, and Equipment:
In service	29,648	30,402
Less: Accumulated depreciation	9,465	9,988
Plant in service, net of depreciation	20,183	20,414
Nuclear fuel, at amortized cost	304	324
Construction work in progress	827	1,113
Total property, plant, and equipment	21,314	21,851
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	64	65
Nuclear decommissioning trusts, at fair value	975	847
Miscellaneous property and investments	127	127
Total other property and investments	1,166	1,039
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	143
Deferred charges related to income taxes	241	240
Regulatory assets – asset retirement obligations	1,047	147
Other regulatory assets, deferred	1,788	1,240
Other deferred charges and assets	189	188
Deferred under recovered regulatory clause revenues	45	116
Total deferred charges and other assets	3,453	1,931
Total Assets	29,019	26,730
Current Liabilities:
Securities due within one year	1	201
Accounts payable —
Affiliated	351	364
Other	317	614
Customer deposits	99	96
Accrued taxes —
Other accrued taxes	167	44
Accrued interest	74	89
Accrued compensation	171	227
Asset retirement obligations	153	163
Operating lease obligations	49
Other current liabilities	122	161
Total current liabilities	1,455	1,959
Long-term Debt	8,520	7,923
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	3,134	2,962
Deferred credits related to income taxes	2,001	2,027
Accumulated deferred ITCs	102	106
Employee benefit obligations	296	314
Operating lease obligations, deferred	109
Asset retirement obligations, deferred	3,400	3,047
Other cost of removal obligations	441	497
Other regulatory liabilities, deferred	151	69
Other deferred credits and liabilities	33	58
Total deferred credits and other liabilities	9,667	9,080
Total Liabilities	19,642	18,962
Redeemable Preferred Stock	291	291
Total stockholders' equity	9,086	7,477
Total Liabilities and Stockholders' Equity	29,019	26,730
GEORGIA POWER CO
Current Assets:
Cash and cash equivalents	449	4
Restricted cash and cash equivalents	0	108
Receivables —
Customer accounts receivable	767	591
Unbilled revenues	282	208
Under recovered fuel clause revenues	0	115
Other accounts and notes receivable	205	80
Accumulated provision for uncollectible accounts	(2)	(2)
Affiliated	28	39
Joint owner accounts receivable	152	170
Materials and supplies	499	519
Fossil fuel for generation	244	231
Prepaid expenses	15	142
Other regulatory assets	270	199
Other current assets	101	70
Total current assets	3,010	2,474
Property, Plant, and Equipment:
In service	37,409	37,675
Less: Accumulated depreciation	11,670	12,096
Plant in service, net of depreciation	25,739	25,579
Nuclear fuel, at amortized cost	544	550
Construction work in progress	5,690	4,833
Total property, plant, and equipment	31,973	30,962
Other Property and Investments:
Equity investments in unconsolidated subsidiaries	51	51
Nuclear decommissioning trusts, at fair value	990	873
Miscellaneous property and investments	68	72
Total other property and investments	1,109	996
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,461
Deferred charges related to income taxes	520	517
Regulatory assets – asset retirement obligations	3,181	2,644
Other regulatory assets, deferred	2,763	2,258
Other deferred charges and assets	398	514
Total deferred charges and other assets	8,323	5,933
Total Assets	44,415	40,365
Current Liabilities:
Securities due within one year	1,504	617
Notes payable	250	294
Accounts payable —
Affiliated	540	575
Other	756	890
Customer deposits	282	276
Accrued taxes —
Other accrued taxes	498	377
Accrued interest	98	105
Accrued compensation	192	221
Asset retirement obligations	259	202
Other regulatory liabilities	183	169
Operating lease obligations	143	0
Other current liabilities	234	183
Total current liabilities	4,939	3,909
Long-term Debt	10,440	9,364
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	3,216	3,062
Deferred credits related to income taxes	3,079	3,080
Accumulated deferred ITCs	257	262
Employee benefit obligations	525	599
Operating lease obligations, deferred	1,287
Asset retirement obligations, deferred	5,680	5,627
Other deferred credits and liabilities	228	139
Total deferred credits and other liabilities	14,272	12,769
Total Liabilities	29,651	26,042
Total stockholders' equity	14,764	14,323
Total Liabilities and Stockholders' Equity	44,415	40,365
MISSISSIPPI POWER CO
Current Assets:
Cash and cash equivalents	268	293
Receivables —
Customer accounts receivable	45	34
Unbilled revenues	44	41
Other accounts and notes receivable	27	31
Affiliated	23	21
Materials and supplies	54	53
Fossil fuel for generation	18	20
Other regulatory assets	102	116
Other current assets	9	19
Total current assets	590	628
Property, Plant, and Equipment:
In service	4,829	4,900
Less: Accumulated depreciation	1,450	1,429
Plant in service, net of depreciation	3,379	3,471
Construction work in progress	109	103
Total property, plant, and equipment	3,488	3,574
Other Property and Investments:
Total other property and investments	136	24
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	7
Deferred charges related to income taxes	32	33
Regulatory assets – asset retirement obligations	208	143
Other regulatory assets, deferred	324	332
Other deferred charges and assets	27	2
Accumulated deferred income taxes	141	150
Total deferred charges and other assets	732	660
Total Assets	4,946	4,886
Current Liabilities:
Securities due within one year	300	40
Accounts payable —
Affiliated	63	60
Other	44	90
Accrued taxes —
Other accrued taxes	82	95
Accrued interest	14	15
Accrued compensation	28	38
Asset retirement obligations	17	34
Other regulatory liabilities	21	12
Operating lease obligations	2
Other current liabilities	52	28
Accrued plant closure costs	21	29
Over recovered regulatory clause liabilities	21	14
Total current liabilities	663	455
Long-term Debt	1,316	1,539
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	392	378
Deferred credits related to income taxes	357	382
Employee benefit obligations	108	115
Operating lease obligations, deferred	5
Asset retirement obligations, deferred	178	126
Other cost of removal obligations	189	185
Other regulatory liabilities, deferred	79	81
Other deferred credits and liabilities	25	16
Total deferred credits and other liabilities	1,328	1,283
Total Liabilities	3,307	3,277
Total stockholders' equity	1,639	1,609
Total Liabilities and Stockholders' Equity	4,946	4,886
SOUTHERN POWER CO
Current Assets:
Cash and cash equivalents	368	181
Receivables —
Customer accounts receivable	152	111
Other accounts and notes receivable	41	116
Affiliated	49	55
Materials and supplies	190	220
Other current assets	38	37
Prepaid income taxes	296	25
Total current assets	1,134	745
Property, Plant, and Equipment:
In service	13,072	13,271
Less: Accumulated depreciation	2,374	2,171
Plant in service, net of depreciation	10,698	11,100
Construction work in progress	541	430
Total property, plant, and equipment	11,239	11,530
Other Property and Investments:
Miscellaneous property and investments	28	0
Intangible assets, net of amortization	326	345
Total other property and investments	354	345
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	368
Assets held for sale, deferred	600	576
Other deferred charges and assets	207	373
Prepaid LTSAs	145	98
Accumulated deferred income taxes	318	1,186
Income taxes receivable, non-current	32	30
Total deferred charges and other assets	1,670	2,263
Total Assets	14,397	14,883
Current Liabilities:
Securities due within one year	900	599
Notes payable	0	100
Accounts payable —
Affiliated	79	92
Other	74	77
Accrued taxes —
Other accrued taxes	21	6
Accrued interest	31	36
Operating lease obligations	22
Other current liabilities	133	121
Total current liabilities	1,238	1,031
Long-term Debt	4,060	4,418
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	117	105
Accumulated deferred ITCs	1,745	1,832
Operating lease obligations, deferred	373
Other deferred credits and liabilities	171	213
Total deferred credits and other liabilities	2,406	2,150
Total Liabilities	7,704	7,599
Total stockholders' equity	6,693	7,284
Total Liabilities and Stockholders' Equity	14,397	14,883
SOUTHERN Co GAS
Current Assets:
Cash and cash equivalents	59	64
Receivables —
Customer accounts receivable	186	370
Energy marketing receivables	336	801
Unbilled revenues	55	213
Other accounts and notes receivable	103	142
Accumulated provision for uncollectible accounts	(18)	(30)
Affiliated	12	11
Natural gas for sale	475	524
Prepaid expenses	86	118
Assets from risk management activities, net of collateral	112	219
Other regulatory assets	82	73
Other current assets	43	50
Total current assets	1,531	2,555
Property, Plant, and Equipment:
In service	16,058	15,177
Less: Accumulated depreciation	4,590	4,400
Plant in service, net of depreciation	11,468	10,777
Construction work in progress	546	580
Total property, plant, and equipment	12,014	11,357
Other Property and Investments:
Goodwill	5,015	5,015
Equity investments in unconsolidated subsidiaries	1,487	1,538
Other intangible assets, net of amortization	78	101
Miscellaneous property and investments	20	20
Total other property and investments	6,600	6,674
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	92
Other regulatory assets, deferred	621	669
Other deferred charges and assets	189	193
Total deferred charges and other assets	902	862
Total Assets	21,047	21,448
Current Liabilities:
Securities due within one year	0	357
Notes payable	267	650
Energy marketing trade payables	368	856
Accounts payable —
Affiliated	42	45
Other	334	402
Customer deposits	96	133
Accrued taxes —
Accrued income taxes	0	66
Other accrued taxes	72	75
Accrued interest	63	55
Accrued compensation	64	100
Other regulatory liabilities	100	79
Operating lease obligations	14
Other current liabilities	127	130
Liabilities from risk management activities, net of collateral	50	76
Total current liabilities	1,583	3,024
Long-term Debt	5,755	5,583
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	1,108	1,016
Deferred credits related to income taxes	890	940
Employee benefit obligations	353	357
Operating lease obligations, deferred	77
Accrued environmental remediation	241	268
Other cost of removal obligations	1,601	1,585
Other deferred credits and liabilities	46	105
Total deferred credits and other liabilities	4,316	4,271
Total Liabilities	11,654	12,878
Total stockholders' equity	9,393	8,570
Total Liabilities and Stockholders' Equity	$ 21,047	$ 21,448