COMMON EQUITY (Tables)

12 Months Ended

Dec. 31, 2021

Stockholders' Equity Note [Abstract]

Schedule of stock-based compensation expense and related deferred tax benefit recognized in income

The following table summarizes our pre-tax stock-based compensation expense, including amounts allocated from WBS, and the related tax benefit recognized in income for the years ended December 31:

(in millions)	2021		2020		2019
Stock options	$	1.1	$	1.0	$	0.8
Restricted stock	1.0		1.2		1.2
Performance units	0.4		4.1		7.4
Stock-based compensation expense	$	2.5	$	6.3	$	9.4
Related tax benefit	$	0.7	$	1.7	$	2.6

Schedule of stock option activity

The following is a summary of our employees' WEC Energy Group stock option activity during 2021:

Stock Options	Number of Options	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in millions)
Outstanding as of January 1, 2021	69,145	$	74.01
Granted	18,021	$	91.06
Exercised	(9,600)	$	64.98
Transferred	1,053	$	91.06
Outstanding as of December 31, 2021	78,619	$	79.25	7.5	$	1.4
Exercisable as of December 31, 2021	27,947	$	70.37	6.4	$	0.7

Schedule of restricted stock activity

The following is a summary of our employees' WEC Energy Group restricted stock activity during 2021:

Restricted Shares	Number of Shares	Weighted-Average Grant Date Fair Value
Outstanding and unvested as of January 1, 2021	3,182	$	78.37
Granted	1,254	$	91.06
Released	(1,622)	$	74.04
Transferred	73	$	91.06
Forfeited	(311)	$	82.79
Outstanding and unvested as of December 31, 2021	2,576	$	87.10