Property, Plant and Equipment

3 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

PROPERTY, PLANT, AND EQUIPMENT

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

	March 31,				December 31,
In thousands	2024		2023		2023
NW Natural:
NGD plant in service	$	4,268,191	$	4,026,183	$	4,206,455
NGD construction work in progress	137,958		97,128		105,166
Less: Accumulated depreciation	1,177,007		1,131,256		1,159,367
NGD plant, net	3,229,142		2,992,055		3,152,254
Other plant in service	71,175		70,364		71,175
Other construction work in progress	11,607		6,624		10,963
Less: Accumulated depreciation	22,859		21,804		22,595
Other plant, net	59,923		55,184		59,543
Total property, plant, and equipment, net	$	3,289,065	$	3,047,239	$	3,211,797
Other (NW Holdings):
Other plant in service	$	156,020	$	97,286	$	147,040
Other construction work in progress	15,153		22,891		15,810
Less: Accumulated depreciation	18,714		11,438		16,593
Other plant, net	152,459		108,739		146,257
NW Holdings:
Total property, plant, and equipment, net	$	3,441,524	$	3,155,978	$	3,358,054
NW Natural:
Capital expenditures in accrued liabilities	$	31,233	$	17,255	$	24,168
NW Holdings:
Capital expenditures in accrued liabilities	$	32,494	$	17,730	$	27,879

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.