Property Plant and Equipment Property Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

Major classes of property, plant and equipment

(Millions of Dollars)	Dec. 31, 2021		Dec. 31, 2020
Property, plant and equipment, net
Electric plant	$	9,639	$	9,229
Plant to be retired (a)	299		316
CWIP	171		146
Total property, plant and equipment	10,109		9,691
Less accumulated depreciation	(2,271)		(2,088)
Property, plant and equipment, net	$	7,838	$	7,603

(a)Includes expected retirement of Tolk and conversion of Harrington to natural gas.