Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
UTILITY PLANT:
Utility plant in service	$ 5,013,898	$ 4,992,594
Less accumulated depreciation	2,089,517	2,320,955
Utility plant in service - net	2,924,381	2,671,639
Construction work in progress	881,284	766,406
Spare parts inventory	15,357	12,336
Property held for future use	1,002	1,002
Utility plant - net	3,822,024	3,451,383
OTHER ASSETS:
Nonutility property - at cost, less accumulated depreciation	513	517
Other long-term assets	5,781	5,664
Other assets - net	6,294	6,181
CURRENT ASSETS:
Cash and cash equivalents	51,303	21,521
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $3,262 and $2,498, respectively)	154,031	124,167
Fuel inventories - at average cost	32,015	66,834
Materials and supplies - at average cost	61,111	57,997
Regulatory assets	28,054	8,002
Prepayments and other current assets	36,929	26,063
Total current assets	363,443	304,584
DEFERRED DEBITS:
Regulatory assets	444,499	448,200
Miscellaneous	5,362	6,821
Total deferred debits	449,861	455,021
TOTAL	4,641,622	4,217,169
Common shareholders’ equity:
Paid in capital	596,849	383,448
Accumulated deficit	(14,635)	(30,515)
Total common shareholders’ equity	582,214	352,933
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt (Note 5)	2,473,463	2,153,276
Total capitalization	3,115,461	2,565,993
CURRENT LIABILITIES:
Short-term debt (Note 5)	49,650	166,655
Accounts payable	101,194	155,428
Accrued expenses	21,022	19,482
Accrued real estate and personal property taxes	22,168	17,712
Regulatory liabilities	15,309	28,169
Accrued interest	11,492	0
Customer deposits	33,882	30,719
Other current liabilities	18,397	12,623
Total current liabilities	316,158	462,478
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:
Regulatory liabilities	658,583	639,516
Deferred income taxes - net	423,523	397,394
Non-current income tax liability	7,340	7,147
Unamortized investment tax credit	2,987	3,910
Accrued pension and other postretirement benefits	57,161	80,734
Asset retirement obligations	58,581	58,986
Miscellaneous	1,828	1,011
Total deferred credits and other long-term liabilities	1,210,003	1,188,698
COMMITMENTS AND CONTINGENCIES
TOTAL	$ 4,641,622	$ 4,217,169