Property Plant and Equipment Property Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Public Utility Property, Plant, and Equipment

Major classes of property, plant and equipment

(Millions of Dollars)	Dec. 31, 2022		Dec. 31, 2021
Property, plant and equipment, net
Electric plant	$	3,579	$	3,348
Natural gas plant	465		423
Common and other property	260		233
CWIP	174		134
Total property, plant and equipment	4,478		4,138
Less accumulated depreciation	(1,564)		(1,478)
Property, plant and equipment, net	$	2,914	$	2,660

Schedule of Jointly Owned Utility Plants

Jointly owned assets as of Dec. 31, 2022:

(Millions of Dollars, Except Percent Owned)	Plant in Service		Accumulated Depreciation		Percent Owned
Electric transmission:
La Crosse, WI to Madison, WI	$	177	$	20	37	%
CapX2020	166		34		80
Total (a)	$	343	$	54

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