Property Plant and Equipment Property Plant and Equipment

12 Months Ended

Dec. 31, 2024

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

Major classes of property, plant and equipment

(Millions of Dollars)	Dec. 31, 2024		Dec. 31, 2023
Property, plant and equipment, net
Electric plant	$	4,103	$	3,845
Natural gas plant	547		502
Common and other property	309		278
CWIP	406		252
Total property, plant and equipment	5,365		4,877
Less accumulated depreciation	(1,695)		(1,640)
Property, plant and equipment, net	$	3,670	$	3,237

Joint Ownership of Transmission Facilities

Jointly owned assets as of Dec. 31, 2024:

(Millions of Dollars, Except Percent Owned)	Plant in Service		Accumulated Depreciation		Percent Owned
Electric transmission:
La Crosse, WI to Madison, WI	$	179	$	30	37	%
CapX2020	169		44		80
Total (a)	$	348	$	74

(a)Projects additionally include $1 million in CWIP.

NSP-Wisconsin’s separately records its share of operating expenses and construction expenditures. Respective owners are responsible for providing their own financing.