Consolidated Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Electric plant:
In service	$ 9,028,219,000	$ 8,981,238,000
Right-of-use assets - finance leases	302,732,000	302,732,000
Less: Accumulated provision for depreciation	(4,720,700,000)	(4,544,405,000)
Net in service	4,610,251,000	4,739,565,000
Nuclear fuel, at amortized cost	368,325,000	358,358,000
Construction work in progress	4,119,600,000	3,866,042,000
Total electric plant	9,098,176,000	8,963,965,000
Investments and funds:
Nuclear decommissioning trust fund	462,043,000	420,818,000
Investments in associated companies	75,621,000	77,037,000
Long-term investments	178,186,000	164,125,000
Restricted investments	511,211,000	503,158,000
Other	24,260,000	24,259,000
Total investments and funds	1,251,321,000	1,189,397,000
Current assets:
Cash and cash equivalents	341,398,000	752,618,000
Restricted short-term investments	150,000,000	150,000,000
Receivables	163,605,000	153,647,000
Inventories, at average cost	268,291,000	259,087,000
Prepayments and other current assets	13,070,000	8,098,000
Total current assets	936,364,000	1,323,450,000
Deferred charges:
Regulatory assets	780,077,000	655,063,000
Prepayments to Georgia Power	36,517,000	29,459,000
Other	18,566,000	21,934,000
Total deferred charges	835,160,000	706,456,000
Total assets	12,121,021,000	12,183,268,000
Capitalization:
Patronage capital and membership fees	985,882,000	962,286,000
Long-term debt	8,879,245,000	8,727,148,000
Obligation under finance leases	81,730,000	81,730,000
Other	24,546,000	21,428,000
Total capitalization	9,971,403,000	9,792,592,000
Current liabilities:
Long-term debt and finance leases due within one year	221,317,000	522,289,000
Short-term borrowings	98,151,000
Accounts payable	143,580,000	206,577,000
Accrued interest	89,405,000	60,971,000
Member power bill prepayments, current	169,638,000	224,957,000
Other current liabilities	37,686,000	49,465,000
Total current liabilities	759,777,000	1,064,259,000
Deferred credits and other liabilities:
Asset retirement obligations	1,028,851,000	1,017,563,000
Member power bill prepayments, non-current	68,525,000	54,750,000
Regulatory liabilities	260,052,000	218,998,000
Other	32,413,000	35,106,000
Total deferred credits and other liabilities	1,389,841,000	1,326,417,000
Total equity and liabilities	$ 12,121,021,000	$ 12,183,268,000