Property, Plant And Equipment

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

NOTE 9. PROPERTY, PLANT AND EQUIPMENT

Net Utility Property

Net utility property consisted of the following as of December 31 (dollars in thousands):

	2020		2019
Utility plant in service	$	6,809,797	$	6,462,993
Construction work in progress		175,767		164,941
Total		6,985,564		6,627,934
Less: Accumulated depreciation and amortization		1,993,952		1,830,927
Total net utility property	$	4,991,612	$	4,797,007

Gross Property, Plant and Equipment

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

	2020		2019
Avista Utilities:
Electric production	$	1,457,497	$	1,445,017
Electric transmission		862,987		802,546
Electric distribution		1,978,868		1,847,273
Electric construction work-in-progress (CWIP) and other		384,372		350,331
Electric total		4,683,724		4,445,167
Natural gas underground storage		53,351		51,017
Natural gas distribution		1,282,563		1,203,186
Natural gas CWIP and other		83,644		81,245
Natural gas total		1,419,558		1,335,448
Common plant (including CWIP)		712,609		681,711
Total Avista Utilities		6,815,891		6,462,326
AEL&P:
Electric production		105,076		100,448
Electric transmission		22,419		22,000
Electric distribution		25,814		24,096
Electric CWIP and other		6,677		9,539
Electric total		159,986		156,083
Common plant		9,687		9,525
Total AEL&P		169,673		165,608
Total gross utility property		6,985,564		6,627,934
Other (1)		16,394		28,195
Total	$	7,001,958	$	6,656,129

(1) Included in other property and investments-net and other non-current assets on the Consolidated Balance Sheets. Accumulated depreciation was $2.2 million as of December 31, 2020 and $5.4 million as of December 31, 2019 for the other businesses.