BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Utility plant:
Electric plant in service	$ 3,076,549	$ 2,857,913
Less accumulated depreciation and amortization	(1,214,088)	(1,162,483)
Net plant in service	1,862,461	1,695,430
Construction work in progress	282,647	287,358
Nuclear fuel; includes fuel in process of $48,492 and $56,129, respectively	188,185	189,921
Less accumulated amortization	(75,820)	(70,366)
Net nuclear fuel	112,365	119,555
Net utility plant	2,257,473	2,102,343
Current assets:
Cash and cash equivalents	25,592	111,057
Accounts receivable, principally trade, net of allowance for doubtful accounts of $2,261 and $2,906, respectively	65,350	62,900
Accumulated deferred income taxes	26,965	20,292
Inventories, at cost	45,942	42,358
Undercollection of fuel revenues	7,248	0
Prepayments and other	7,694	9,627
Total current assets	178,791	246,234
Deferred charges and other assets:
Decommissioning trust funds	214,095	187,053
Regulatory assets	101,050	101,590
Other	34,879	31,830
Total deferred charges and other assets	350,024	320,473
Total assets	2,786,288	2,669,050
Capitalization:
Common stock, stated value $1 per share, 100,000,000 shares authorized, 65,639,091 and 65,520,551 shares issued, and 120,534 and 84,446 restricted shares, respectively	65,760	65,605
Capital in excess of stated value	314,443	310,994
Retained earnings	985,665	939,131
Accumulated other comprehensive income (loss), net of tax	2,612	(66,084)
Total stockholders equity subtotal before treasury stock	1,368,480	1,249,646
Treasury stock, 25,492,919 shares at cost	(424,647)	(424,647)
Common stock equity	943,833	824,999
Long-term debt	999,620	999,535
Total capitalization	1,943,453	1,824,534
Current liabilities:
Short-term borrowings under the revolving credit facility	14,352	22,155
Accounts payable, principally trade	61,795	61,581
Taxes accrued	25,206	29,248
Interest accrued	12,189	12,127
Overcollection of fuel revenues	1,048	4,643
Other	22,932	21,995
Total current liabilities	137,522	151,749
Deferred credits and other liabilities:
Accumulated deferred income taxes	449,925	358,674
Accrued pension liability	84,012	125,690
Accrued postretirement benefit liability	50,655	99,170
Asset retirement obligation	65,214	62,784
Regulatory liabilities	26,416	22,179
Other	29,091	24,270
Total deferred credits and other liabilities	705,313	692,767
Commitments and contingencies
Total capitalization and liabilities	$ 2,786,288	$ 2,669,050