Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Electric plant:
In service	$ 8,445,583	$ 8,345,241
Less: Accumulated provision for depreciation	(3,882,837)	(3,762,690)
Total in service	4,562,746	4,582,551
Nuclear fuel, at amortized cost	355,345	369,529
Construction work in progress	2,599,166	2,374,392
Total electric plant	7,517,257	7,326,472
Investments and funds:
Nuclear decommissioning trust fund	352,510	366,004
Investment in associated companies	68,865	67,368
Long-term investments	82,118	85,728
Restricted cash and investments	141,620	118,390
Other	18,602	17,397
Total investments and funds	663,715	654,887
Current assets:
Cash and cash equivalents	283,536	237,391
Restricted short-term investments	253,022	247,057
Receivables	135,152	130,366
Inventories, at average cost	290,791	270,849
Prepayments and other current assets	17,246	12,667
Total current assets	979,747	898,330
Deferred charges:
Deferred debt expense, being amortized	96,324	97,902
Regulatory assets	515,351	484,049
Prepayments to Georgia Power Company	77,605	73,726
Other	8,742	10,877
Total deferred charges	698,022	666,554
Total assets	9,858,741	9,546,243
Capitalization:
Patronage capital and membership fees	803,253	761,124
Accumulated other comprehensive margin	201	468
Total patronage capital and membership fees and accumulated other comprehensive margin	803,454	761,592
Long-term debt	7,316,504	7,113,000
Obligation under capital leases	98,532	100,456
Other	17,275	16,434
Total capitalization	8,235,765	7,991,482
Current liabilities:
Long-term debt and capital leases due within one year	151,199	160,754
Short-term borrowings	324,501	234,369
Accounts payable	58,126	98,337
Accrued interest	53,068	58,841
Member power bill prepayments, current	150,438	166,013
Other current liabilities	66,215	70,748
Total current liabilities	803,547	789,062
Deferred credits and other liabilities:
Gain on sale of plant, being amortized	19,566	20,676
Asset retirement obligations	473,851	432,260
Member power bill prepayments, non-current	75,188	31,941
Power sale agreement, being amortized	3,167	12,669
Regulatory liabilities	172,409	194,073
Other	75,248	74,080
Total deferred credits and other liabilities	819,429	765,699
Total equity and liabilities	$ 9,858,741	$ 9,546,243