Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Electric plant:
In service	$ 8,976,019	$ 8,886,407
Less: Accumulated provision for depreciation	(4,391,583)	(4,302,332)
Net in service	4,584,436	4,584,075
Nuclear fuel, at amortized cost	350,425	358,562
Construction work in progress	3,369,651	2,935,868
Total electric plant	8,304,512	7,878,505
Investments and funds:
Nuclear decommissioning trust fund	446,985	445,055
Investment in associated companies	75,246	74,981
Long-term investments	151,399	140,622
Restricted investments	585,111	653,585
Other	23,238	22,562
Total investments and funds	1,281,979	1,336,805
Current assets:
Cash and cash equivalents	524,874	397,695
Restricted short-term investments	219,989	229,324
Receivables	164,784	156,781
Inventories, at average cost	263,759	266,219
Prepayments and other current assets	20,217	18,884
Total current assets	1,193,623	1,068,903
Deferred charges:
Regulatory assets	597,611	585,084
Prepayments to Georgia Power	33,532	45,575
Other	13,474	13,267
Total deferred charges	644,617	643,926
Total assets	11,424,731	10,928,139
Capitalization:
Patronage capital and membership fees	955,771	911,087
Long-term debt	7,779,704	7,927,562
Obligation under capital lease	84,534	87,192
Other	20,728	20,051
Total capitalization	8,840,737	8,945,892
Current liabilities:
Long-term debt and capital lease due within one year	554,340	216,694
Short-term borrowings	438,021	190,626
Accounts payable	192,590	212,868
Accrued interest	85,671	79,510
Member power bill prepayments, current	113,025	6,171
Other current liabilities	51,238	55,136
Total current liabilities	1,434,885	761,005
Deferred credits and other liabilities:
Asset retirement obligations	749,659	734,997
Member power bill prepayments, non-current	109,000	203,615
Regulatory liabilities	253,683	251,649
Other	36,767	30,981
Total deferred credits and other liabilities	1,149,109	1,221,242
Total equity and liabilities	$ 11,424,731	$ 10,928,139