Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Electric plant:
In service	$ 8,752,591	$ 8,596,148
Less: Accumulated provision for depreciation	(4,069,257)	(3,925,838)
Total in service	4,683,334	4,670,310
Nuclear fuel, at amortized cost	366,698	373,145
Construction work in progress	3,126,508	2,868,669
Total electric plant	8,176,540	7,912,124
Investments and funds:
Nuclear decommissioning trust fund	386,205	363,829
Investment in associated companies	72,163	72,010
Long-term investments	99,701	86,771
Restricted cash and investments, long-term	201,511	134,690
Other	20,002	19,097
Total investments and funds	779,582	676,397
Current assets:
Cash and cash equivalents	362,708	213,038
Restricted short-term investments	249,685	253,204
Receivables	173,782	130,464
Inventories, at average cost	253,526	299,252
Prepayments and other current assets	18,852	16,913
Total current assets	1,058,553	912,871
Deferred charges:
Regulatory assets	542,057	530,254
Other	25,031	28,137
Total deferred charges	567,088	558,391
Total assets	10,581,763	10,059,783
Capitalization:
Patronage capital and membership fees	871,970	809,465
Accumulated other comprehensive margin	416	58
Total patronage capital and membership fees and accumulated other comprehensive margin	872,386	809,523
Long-term debt	7,885,428	7,291,154
Obligation under capital lease	94,358	96,501
Other	18,459	17,561
Total capitalization	8,870,631	8,214,739
Current liabilities:
Long-term debt and capital lease due within one year	153,274	189,840
Short-term borrowings	156,253	261,478
Accounts payable	69,613	157,432
Accrued interest	57,864	58,830
Members power bill prepayments, current	168,705	174,743
Other current liabilities	58,613	86,746
Total current liabilities	664,322	929,069
Deferred credits and other liabilities:
Asset retirement obligations	698,240	602,230
Member power bill prepayments, non-current	83,052	44,205
Contract retainage	39,551	66,515
Regulatory liabilities	193,156	166,967
Other	32,811	36,058
Total deferred credits and other liabilities	1,046,810	915,975
Total equity and liabilities	$ 10,581,763	$ 10,059,783