Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

The following table summarizes the RSU activity during the years ended December 31, 2024, 2023, and 2022:


	Number of RSUs Outstanding	Weighted-Average Grant Date Fair Value Per Share
Balances as of December 31, 2021	—	$	—
RSUs granted	8,105,539	5.27
RSUs forfeited	(65,650)	7.40
Balances as of December 31, 2022	8,039,889	5.25
RSUs granted	3,104,600	5.52
RSUs vested	(154,023)	7.25
RSUs forfeited	(300,655)	5.45
Balances as of December 31, 2023	10,689,811	5.29
RSUs granted	4,626,776	4.72
RSUs vested	(1,234,392)	5.49
RSUs forfeited	(4,695,563)	5.01
Balances as of December 31, 2024	9,386,632	$	5.12

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions

The fair value of such performance-based RSUs was estimated on the dates of the grants using the Monte Carlo simulation of potential outcomes with the following key inputs:


	For the year ended December 31,
	2024		2023		2022
Expected volatility	66	%	60	%	70	%
Risk-free interest rate	4.35	%	3.73	%	1.94	%
Expected term	2.9 years		2.9 years		5.0 years

The fair value of GW Plan PSUs was estimated on the dates of the grants using the Monte Carlo simulation of potential outcomes with the following key inputs:


	For the year ended December 31,
	2024
Expected volatility	70	%
Risk-free interest rate	4.40	%
Expected term	2.7 years

Schedule of Percentage Payout Calculation

The number of GW Plan PSUs vested, and thus shares of Class A Common Stock issued, will be calculated based on the average stock price of the Company's Class A Common Stock during the twenty trading days prior to and including (if applicable) the vesting date (the “AMPS Price”) as follows:


AMPS Price	Payout
<$8	40	%
$8-10.99	80	%
$11-11.50	100	%
$11.51-12.99	110	%
$13+	120	%

Altus Power, Inc. 10-K