Property, Plant and Equipment

6 Months Ended

Jun. 30, 2022

Property, Plant and Equipment [Abstract]

Public Utility Property, Plant, and Equipment [Table Text Block]

The following table sets forth the major classifications of property, plant, and equipment and accumulated depreciation:

	June 30,				December 31,
In thousands	2022		2021		2021
NW Natural:
NGD plant in service	$	3,782,197	$	3,623,092	$	3,721,939
NGD construction work in progress	195,118		99,646		135,398
Less: Accumulated depreciation	1,121,444		1,068,603		1,098,715
NGD plant, net	2,855,871		2,654,135		2,758,622
Other plant in service	69,623		66,315		69,332
Other construction work in progress	5,529		5,817		4,971
Less: Accumulated depreciation	21,167		20,140		20,646
Other plant, net	53,985		51,992		53,657
Total property, plant, and equipment, net	$	2,909,856	$	2,706,127	$	2,812,279
Other (NW Holdings):
Other plant in service	$	59,718	$	50,148	$	57,184
Other construction work in progress	17,051		4,774		8,419
Less: Accumulated depreciation	7,944		5,120		6,512
Other plant, net	$	68,825	$	49,802	$	59,091
NW Holdings:
Total property, plant, and equipment, net	$	2,978,681	$	2,755,929	$	2,871,370
NW Natural:
Capital expenditures in accrued liabilities	$	44,052	$	37,968	$	37,537
NW Holdings:
Capital expenditures in accrued liabilities	$	45,079	$	38,395	$	38,333

NW Natural

Other plant balances include non-utility gas storage assets at the Mist facility and other long-lived assets not related to NGD.

NW Holdings

Other plant balances include long-lived assets associated with water and wastewater operations and non-regulated activities not held by NW Natural or its subsidiaries.