v3.24.2.u1
Property, Plant and Equipment
 6 Months Ended
Jun. 30, 2024
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 thousands202420232023
NW Natural:
NGD plant in service$4,330,415 $4,060,392 $4,206,455 
NGD construction work in progress170,625 123,163 105,166 
Less: Accumulated depreciation1,190,789 1,146,202 1,159,367 
NGD plant, net3,310,251 3,037,353 3,152,254 
Other plant in service68,712 70,364 71,175 
Other construction work in progress11,251 7,181 10,963 
Less: Accumulated depreciation22,380 22,068 22,595 
Other plant, net57,583 55,477 59,543 
Total property, plant, and equipment, net$3,367,834 $3,092,830 $3,211,797 
Other (NW Holdings):
Other plant in service$169,785 $122,161 $147,040 
Other construction work in progress13,805 8,732 15,810 
Less: Accumulated depreciation20,979 12,960 16,593 
Other plant, net162,611 117,933 146,257 
NW Holdings:
Total property, plant, and equipment, net$3,530,445 $3,210,763 $3,358,054 
NW Natural:
Capital expenditures in accrued liabilities$24,586 $28,466 $24,168 
NW Holdings:
Capital expenditures in accrued liabilities$28,370 $31,439 $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.