Property, Plant And Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

The balances of the major classifications of property, plant and equipment are detailed in the following table as of December 31 (dollars in thousands):

	2016		2015
Avista Utilities:
Electric production	$	1,346,332	$	1,217,179
Electric transmission	682,529		640,586
Electric distribution	1,525,175		1,468,157
Electric construction work-in-progress (CWIP) and other	296,912		358,846
Electric total	3,850,948		3,684,768
Natural gas underground storage	44,672		43,080
Natural gas distribution	954,298		878,982
Natural gas CWIP and other	57,601		62,024
Natural gas total	1,056,571		984,086
Common plant (including CWIP)	527,458		456,796
Total Avista Utilities	5,434,977		5,125,650
AEL&P:
Electric production	94,839		72,292
Electric transmission	20,252		18,817
Electric distribution	20,057		19,005
Electric production held under long-term capital lease	71,007		71,007
Electric CWIP and other	7,190		16,971
Electric total	213,345		198,092
Common plant	8,651		8,133
Total AEL&P	221,996		206,225
Other (1)	30,764		25,709
Total	$	5,687,737	$	5,357,584

(1) Included in other property and investments-net and other non-current assets on the Consolidated Balance Sheets. Accumulated depreciation was $11.2 million as of December 31, 2016 and $10.6 million as of December 31, 2015 for the other businesses.