Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Electric plant:
In service	$ 8,995,373	$ 8,886,407
Less: Accumulated provision for depreciation	(4,451,569)	(4,302,332)
Net in service	4,543,804	4,584,075
Nuclear fuel, at amortized cost	343,285	358,562
Construction work in progress	3,633,520	2,935,868
Total electric plant	8,520,609	7,878,505
Investments and funds:
Nuclear decommissioning trust fund	460,974	445,055
Investment in associated companies	75,059	74,981
Long-term investments	165,806	140,622
Restricted investments	523,237	653,585
Other	23,590	22,562
Total investments and funds	1,248,666	1,336,805
Current assets:
Cash and cash equivalents	717,914	397,695
Restricted short-term investments	232,010	229,324
Receivables	176,652	156,781
Inventories, at average cost	248,366	266,219
Prepayments and other current assets	10,170	18,884
Total current assets	1,385,112	1,068,903
Deferred charges:
Regulatory assets	609,919	585,084
Prepayments to Georgia Power	31,256	45,575
Other	21,206	13,267
Total deferred charges	662,381	643,926
Total assets	11,816,768	10,928,139
Capitalization:
Patronage capital and membership fees	967,106	911,087
Long-term debt	8,286,205	7,927,562
Obligation under capital leases	84,535	87,192
Other	21,077	20,051
Total capitalization	9,358,923	8,945,892
Current liabilities:
Long-term debt and capital leases due within one year	559,686	216,694
Short-term borrowings	203,888	190,626
Accounts payable	195,743	212,868
Accrued interest	80,808	79,510
Member power bill prepayments, current	189,997	6,171
Other current liabilities	73,754	55,136
Total current liabilities	1,303,876	761,005
Deferred credits and other liabilities:
Asset retirement obligations	758,592	734,997
Member power bill prepayments, non-current	87,250	203,615
Regulatory liabilities	272,427	251,649
Other	35,700	30,981
Total deferred credits and other liabilities	1,153,969	1,221,242
Total equity and liabilities	$ 11,816,768	$ 10,928,139