Consolidated Statements of Financial Position - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Electric plant
In service	$ 5,852,544	$ 5,802,844
Construction work in progress	179,955	175,567
Total electric plant	6,032,499	5,978,411
Less allowances for depreciation and amortization	(2,456,070)	(2,409,020)
Net electric plant	3,576,429	3,569,391
Other plant	316,855	283,546
Less allowances for depreciation, amortization and depletion	(108,089)	(105,660)
Net other plant	208,766	177,886
Total property, plant and equipment	3,785,195	3,747,277
Other assets and investments
Investments in other associations	144,631	143,608
Investments in and advances to coal mines	18,339	18,274
Restricted cash and investments	6,005	5,979
Intangible assets, net of accumulated amortization	7,324	10,986
Other noncurrent assets	9,720	9,604
Total other assets and investments	186,019	188,451
Current assets
Cash and cash equivalents	112,034	143,694
Restricted cash and investments	3,480	1,292
Deposits and advances	40,034	27,881
Accounts receivable—Members	117,131	102,035
Other accounts receivable	40,952	16,034
Coal inventory	78,314	46,849
Materials and supplies	91,486	89,459
Total current assets	483,431	427,244
Deferred charges
Regulatory assets	443,886	454,523
Prepayment—NRECA Retirement Security Plan	34,722	37,607
Other	43,527	38,492
Total deferred charges	522,135	530,622
Total assets	4,976,780	4,893,594
Capitalization
Patronage capital equity	1,015,492	1,003,020
Accumulated other comprehensive income (loss)	(408)	(210)
Noncontrolling interest	110,061	111,295
Total equity	1,125,145	1,114,105
Long-term debt	3,089,940	3,120,286
Total capitalization	4,215,085	4,234,391
Current liabilities
Member advances	9,505	8,447
Accounts payable	132,080	117,510
Short-term borrowings	221,300	144,667
Accrued expenses	26,477	32,484
Current asset retirement obligations	2,999	3,087
Accrued interest	31,769	32,852
Accrued property taxes	18,685	27,137
Current maturities of long-term debt	98,245	78,004
Total current liabilities	541,060	444,188
Deferred credits and other liabilities
Regulatory liabilities	87,237	81,824
Deferred income tax liability	17,205	17,205
Asset retirement obligations	54,829	53,768
Other	52,303	53,396
Total deferred credits and other liabilities	211,574	206,193
Accumulated postretirement benefit and postemployment obligations	9,061	8,822
Total equity and liabilities	$ 4,976,780	$ 4,893,594