Consolidated Statements of Financial Position - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Electric Plant
In service	$ 5,682,613	$ 5,486,518
Construction work in progress	212,081	216,279
Total electric plant	5,894,694	5,702,797
Less allowances for depreciation and amortization	(2,361,555)	(2,240,732)
Net electric plant	3,533,139	3,462,065
Other plant	234,457	227,957
Less allowances for depreciation, amortization, and depletion	(89,809)	(73,471)
Net other plant	144,648	154,486
Total property, plant and equipment	3,677,787	3,616,551
Other assets and investments
Investment in other associations	139,350	123,686
Investments in and advances to coal mines	18,176	16,221
Restricted cash and investments	1,000	1,000
Intangible assets	18,310	25,634
Other noncurrent assets	11,542	12,139
Total other assets and investments	188,378	178,680
Current assets
Cash and cash equivalents	165,893	144,587
Restricted cash and investments	997	9,530
Deposits and advances	25,141	21,673
Accounts receivable—Members	97,925	106,216
Other accounts receivable	24,837	14,270
Coal inventory	63,945	59,277
Materials and supplies	87,768	85,501
Total current assets	466,506	441,054
Deferred charges
Regulatory assets	395,615	415,081
Prepayment—NRECA Retirement Security Plan	43,627	49,146
Other	139,378	122,535
Total deferred charges	578,620	586,762
Total assets	4,911,291	4,823,047
Capitalization
Patronage capital equity	961,364	952,082
Accumulated other comprehensive income (loss)	(286)	589
Noncontrolling interest	109,147	108,757
Total equity	1,070,225	1,061,428
Long-term debt	3,139,705	3,273,538
Total capitalization	4,209,930	4,334,966
Current liabilities
Member advances	11,363	9,403
Accounts payable	105,511	96,098
Short-term borrowing	119,901
Accrued expenses	32,719	30,045
Accrued interest	34,166	34,332
Accrued property taxes	27,584	27,395
Current maturities of long-term debt	107,903	91,419
Total current liabilities	439,147	288,692
Deferred credits and other liabilities
Regulatory liabilities	95,512	45,000
Deferred income tax liability	30,517	28,629
Intangible liabilities	3,263	6,221
Asset retirement obligations	58,583	55,215
Other	66,164	57,423
Total deferred credits and other liabilities	254,039	192,488
Accumulated postretirement benefit and postemployment obligations	8,175	6,901
Total equity and liabilities	$ 4,911,291	$ 4,823,047