10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024

OR

 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number 001-04321

ALTUS POWER, INC.

(Exact name of registrant as specified in its charter)

Delaware		85-3448396
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
2200 Atlantic Street, Sixth Floor
Stamford,	CT	06902
(Address of Principal Executive Offices)		(Zip Code)

(203)-698-0090

Registrant's telephone number, including area code

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A common stock, par value $0.0001 per share	AMPS	New York Stock Exchange

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐ 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).     Yes  ☒   No  ☐ 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).     Yes   ☐     No  ☒

As of April 30, 2024, there were 159,874,981 shares of Class A common stock outstanding and 796,950 shares of Class B common stock outstanding.

Table of Contents

Part I - Financial Information
Item 1. Financial Statements	4
Condensed Consolidated Statements of Operations	4
Condensed Consolidated Statements of Comprehensive Income	5
Condensed Consolidated Balance Sheets	6
Condensed Consolidated Statements of Changes in Equity	8
Condensed Consolidated Statements of Cash Flows	9
Notes to Condensed Consolidated Financial Statements	11
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	35
Item 3. Quantitative and Qualitative Disclosures About Market Risk	52
Item 4. Controls and Procedures	53
Part II - Other Information
Item 1. Legal Proceedings	54
Item 1A. Risk Factors	54
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	54
Item 3. Defaults Upon Senior Securities	54
Item 4. Mine Safety Disclosures	54
Item 5. Other Information	54
Item 6. Exhibits	55
Signatures	56

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Part I. Financial Information

Item 1. Financial Statements

Altus Power, Inc.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited)

(In thousands, except share and per share data)

	Three Months Ended March 31,
	2024		2023
Operating revenues, net	$	40,659	$	29,378
Operating expenses
Cost of operations (exclusive of depreciation and amortization shown separately below)	10,920		5,976
General and administrative	10,022		7,362
Depreciation, amortization and accretion expense	16,130		11,376
Acquisition and entity formation costs	1,066		1,491
(Gain) loss on fair value remeasurement of contingent consideration, net	(79)		50
Gain on disposal of property, plant and equipment	(88)		—
Stock-based compensation	4,304		2,872
Total operating expenses	$	42,275	$	29,127
Operating (loss) income	(1,616)		251
Other (income) expense
Change in fair value of Alignment Shares liability	(26,077)		(17,018)
Other (income) expense, net	(683)		90
Interest expense, net	16,193		12,446
Total other income, net	$	(10,567)	$	(4,482)
Income before income tax expense	$	8,951	$	4,733
Income tax expense	(4,896)		(888)
Net income	$	4,055	$	3,845
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(3,454)		(1,772)
Net income attributable to Altus Power, Inc.	$	7,509	$	5,617
Net income per share attributable to common stockholders
Basic	$	0.05	$	0.04
Diluted	$	0.05	$	0.03
Weighted average shares used to compute net income per share attributable to common stockholders
Basic	159,025,740		158,621,674
Diluted	162,242,148		161,003,402

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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Altus Power, Inc.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited)

(In thousands)

	Three Months Ended March 31,
	2024		2023
Net income	$	4,055	$	3,845
Other comprehensive loss
Foreign currency translation adjustment	9		9
Unrealized loss on a cash flow hedge, net of tax	—		(771)
Reclassification of realized gain on cash flow hedge to net income	(404)		$	—
Other comprehensive loss, net of tax	$	(395)	$	(762)
Total comprehensive income	$	3,660	$	3,083
Comprehensive loss attributable to the noncontrolling and redeemable noncontrolling interests	(3,454)		(1,772)
Comprehensive income attributable to Altus Power, Inc.	$	7,114	$	4,855

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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Altus Power, Inc.

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited)

(In thousands, except share and per share data)

	As of March 31, 2024		As of December 31, 2023
Assets
Current assets:
Cash and cash equivalents	$	173,266	$	160,817
Current portion of restricted cash	17,622		45,358
Accounts receivable, net	20,057		17,100
Other current assets	5,763		5,522
Total current assets	216,708		228,797
Restricted cash, noncurrent portion	12,625		12,752
Property, plant and equipment, net	1,745,407		1,619,047
Intangible assets, net	47,330		47,588
Operating lease asset	183,655		173,804
Derivative assets	2,585		530
Other assets	10,166		7,831
Total assets	$	2,218,476	$	2,090,349
Liabilities, redeemable noncontrolling interests, and stockholders' equity
Current liabilities:
Accounts payable	$	7,411	$	7,338
Construction payable	11,672		14,108
Interest payable	13,958		8,685
Purchase price payable, current	9,291		9,514
Due to related parties	85		51
Current portion of long-term debt, net	73,429		39,611
Operating lease liability, current	6,293		6,861
Contract liability, current	2,802		2,940
Other current liabilities	21,144		17,402
Total current liabilities	146,085		106,510
Alignment Shares liability	34,415		60,502
Long-term debt, net of unamortized debt issuance costs and current portion	1,253,819		1,163,307
Intangible liabilities, net	20,033		18,945
Asset retirement obligations	18,701		17,014
Operating lease liability, noncurrent	189,136		180,701
Contract liability, noncurrent	6,132		5,620
Deferred tax liabilities, net	14,725		9,831
Other long-term liabilities	2,989		2,908
Total liabilities	$	1,686,035	$	1,565,338
Commitments and contingent liabilities (Note 11)
Redeemable noncontrolling interests	24,389		26,044
Stockholders' equity
Common stock $0.0001 par value; 988,591,250 shares authorized as of March 31, 2024, and December 31, 2023; 159,874,981 and 158,999,886 shares issued and outstanding as of March 31, 2024, and December 31, 2023, respectively	16		16
Additional paid-in capital	488,408		485,063
Accumulated deficit	(47,765)		(55,274)
Accumulated other comprehensive income	16,878		17,273
Total stockholders' equity	$	457,537	$	447,078
Noncontrolling interests	50,515		51,889
Total equity	$	508,052	$	498,967
Total liabilities, redeemable noncontrolling interests, and equity	$	2,218,476	$	2,090,349

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The following table presents the assets and liabilities of the consolidated variable interest entities (refer to Note 4).

(In thousands)	As of March 31, 2024		As of December 31, 2023
Assets of consolidated VIEs, included in total assets above:
Cash	$	13,947	$	12,191
Current portion of restricted cash	436		1,066
Accounts receivable, net	9,373		8,068
Other current assets	1,445		973
Restricted cash, noncurrent portion	3,979		4,002
Property, plant and equipment, net	868,645		845,024
Intangible assets, net	5,360		5,507
Operating lease asset	98,103		79,597
Other assets	2,228		2,228
Total assets of consolidated VIEs	$	1,003,516	$	958,656
Liabilities of consolidated VIEs, included in total liabilities above:
Accounts payable	$	1,207	$	1,056
Operating lease liability, current	3,042		2,542
Current portion of long-term debt, net	3,021		3,021
Contract liability, current	484		484
Other current liabilities	1,592		1,473
Long-term debt, net of unamortized debt issuance costs and current portion	38,926		38,958
Intangible liabilities, net	3,819		4,522
Asset retirement obligations	9,394		9,185
Operating lease liability, noncurrent	100,671		82,913
Contract liability, noncurrent	4,591		4,011
Other long-term liabilities	1,750		1,771
Total liabilities of consolidated VIEs	$	168,497	$	149,936

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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Altus Power, Inc.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(unaudited)

(In thousands, except share data)

	Common Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Loss		Accumulated Deficit		Total Stockholders' Equity		Non Controlling Interests		Total Equity
	Shares	Amount
As of December 31, 2022	158,904,401	$	16	$	470,004	$	—	$	(45,919)	$	424,101	$	20,825	$	444,926
Stock-based compensation	83,541	—		2,813		—		—		2,813		—		2,813
Cash distributions to noncontrolling interests	—	—		—		—		—		—		(526)		(526)
Cash contributions from noncontrolling interests	—	—		—		—		—		—		1,737		1,737
Conversion of Alignment Shares to Class A Common Stock	2,011	—		11		—		—		11		—		11
Noncontrolling interests assumed through acquisitions	—	—		—		—		—		—		13,296		13,296
Redemption of redeemable noncontrolling interests	—	—		1,374						1,374				1,374
Other comprehensive loss	—	—		—		(762)		—		(762)				(762)
Net income (loss)	—	—		—		—		5,617		5,617		(2,633)		2,984
As of March 31, 2023	158,989,953	16		474,202		(762)		(40,302)		433,154		32,699		465,853

	Common Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Income		Accumulated Deficit		Total Stockholders' Equity		Non Controlling Interests		Total Equity
	Shares	Amount
As of December 31, 2023	158,999,886	$	16	$	485,063	$	17,273	$	(55,274)	$	447,078	$	51,889	$	498,967
Stock-based compensation, net of withholding taxes	873,104	—		3,335		—		—		3,335		—		3,335
Cash distributions to noncontrolling interests	—	—		—		—		—		—		(899)		(899)
Conversion of Alignment Shares to Class A Common Stock	1,991	—		10		—		—		10		—		10
Noncontrolling interests assumed through acquisitions	—	—		—		—		—		—		2,100		2,100
Other comprehensive loss	—	—		—		(395)		—		(395)		—		(395)
Net income	—	—		—		—		7,509		7,509		(2,575)		4,934
As of March 31, 2024	159,874,981	$	16	$	488,408	$	16,878	$	(47,765)	$	457,537	$	50,515	$	508,052

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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Altus Power, Inc.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

(In thousands)

	Three Months Ended March 31,
	2024		2023
Cash flows from operating activities
Net income	$	4,055	$	3,845
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, amortization and accretion	16,130		11,376
Non-cash lease transactions	(1,299)		112
Deferred tax expense	4,896		888
Amortization of debt discount and financing costs	1,200		753
Change in fair value of Alignment Shares liability	(26,077)		(17,018)
Remeasurement of contingent consideration	(79)		50
Gain on disposal of property, plant and equipment	(88)		—
Reclassification of realized gain on cash flow hedge to net income	(404)		—
Stock-based compensation	4,111		2,813
Other	(1,080)		138
Changes in assets and liabilities, excluding the effect of acquisitions
Accounts receivable	(1,326)		1,685
Due to related parties	34		101
Derivative assets	(2,055)		1,769
Other assets	(1,448)		1,206
Accounts payable	68		2,828
Interest payable	5,273		1,204
Contract liability	163		152
Other liabilities	2,451		2,323
Net cash provided by operating activities	4,525		14,225
Cash flows used for investing activities
Capital expenditures	(18,538)		(24,844)
Payments to acquire renewable energy businesses, net of cash and restricted cash acquired	(119,617)		(288,241)
Payments to acquire renewable energy facilities from third parties, net of cash and restricted cash acquired	(4,035)		(6,350)
Proceeds from disposal of property, plant and equipment	266		—
Net cash used for investing activities	(141,924)		(319,435)
Cash flows used for financing activities
Proceeds from issuance of long-term debt	131,895		204,687
Repayment of long-term debt	(7,208)		(7,724)
Payment of debt issuance costs	(1,231)		(1,976)
Payment of deferred purchase price payable	—		(4,531)
Contributions from noncontrolling interests	—		1,737
Redemption of redeemable noncontrolling interests	—		(1,098)
Distributions to noncontrolling interests	(1,471)		(1,102)
Net cash provided by financing activities	121,985		189,993
Net decrease in cash, cash equivalents, and restricted cash	(15,414)		(115,217)
Cash, cash equivalents, and restricted cash, beginning of period	218,927		199,398
Cash, cash equivalents, and restricted cash, end of period	$	203,513	$	84,181

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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	Three Months Ended March 31,
	2024		2023
Supplemental cash flow disclosure
Cash paid for interest	$	12,256	$	6,509
Cash paid for taxes	21		—
Non-cash investing and financing activities
Asset retirement obligations	$	1,391	$	3,847
Debt assumed through acquisitions	—		8,100
Noncontrolling interest assumed through acquisitions	2,100		13,296
Redeemable noncontrolling interest assumed through acquisitions	—		8,100
Accrued distributions to noncontrolling interests	205		—
Accrued deferred financing costs	19		—
Acquisitions of property and equipment included in construction payable	—		10,872
Conversion of Alignment Shares into common stock	10		11
Deferred purchase price payable	—		7,069

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Altus Power, Inc.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

1.General

Company Overview

Altus Power, Inc., a Delaware corporation (the “Company” or “Altus Power”), headquartered in Stamford, Connecticut, develops, owns, constructs and operates large-scale roof, ground and carport-based photovoltaic solar energy generation and storage systems, for the purpose of producing and selling electricity to credit worthy counterparties, including commercial and industrial, public sector and community solar customers, under long-term contracts. The solar energy facilities are owned by the Company in project-specific limited liability companies (the “Solar Facility Subsidiaries”).

On December 9, 2021 (the “Closing Date”), the Company merged (the “Merger”) with CBRE Acquisition Holdings, Inc. (“CBAH”) and became listed on the New York Stock Exchange under the stock symbol "AMPS."

2.Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The Company prepares its unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. The Company’s condensed consolidated financial statements include the results of wholly-owned and partially-owned subsidiaries in which the Company has a controlling interest. All intercompany balances and transactions have been eliminated in consolidation.

Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2023, filed with the Company’s 2023 annual report on Form 10-K on March 14, 2024, and the related notes which provide a more complete discussion of the Company’s accounting policies and certain other information. The information as of December 31, 2023, included in the condensed consolidated balance sheets was derived from the Company’s audited consolidated financial statements. The condensed consolidated financial statements were prepared on the same basis as the audited consolidated financial statements and reflect all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the Company’s financial position as of March 31, 2024, and the results of operations and cash flows for the three months ended March 31, 2024, and 2023. The results of operations for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected for the full year or any other future interim or annual period.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.

In recording transactions and balances resulting from business operations, the Company uses estimates based on the best information available. Estimates are used for such items as the fair value of net assets acquired in connection with accounting for business combinations, the useful lives of the solar energy facilities, and inputs and assumptions used in the valuation of asset retirement obligations (“AROs”), contingent consideration, derivative instruments, and Class B common stock, par value $0.0001 per share ("Alignment Shares").

Segment Information

Operating segments are defined as components of a company about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision makers is the chief executive officer. Based on the financial information presented to and reviewed by the chief operating decision makers in deciding how to allocate the resources and in assessing the performance of the Company, the Company has determined it operates as a single operating segment and has one reportable segment, which includes revenue under power purchase agreements, revenue from net metering credit agreements,

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Altus Power, Inc.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

solar renewable energy credit revenue, rental income, performance based incentives and other revenue. The Company’s principal operations, revenue and decision-making functions are located in the United States.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents includes all cash balances on deposit with financial institutions and readily marketable securities with original maturity dates of three months or less at the time of acquisition and are denominated in U.S. dollars. Pursuant to the budgeting process, the Company maintains certain cash and cash equivalents on hand for possible equipment replacement related costs.

The Company records cash that is restricted as to withdrawal or use under the terms of certain contractual agreements as restricted cash. Restricted cash is included in current portion of restricted cash and restricted cash, noncurrent portion on the condensed consolidated balance sheets and includes cash held with financial institutions for cash collateralized letters of credit pursuant to various financing and construction agreements.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets. Cash, cash equivalents, and restricted cash consist of the following:

	As of March 31, 2024		As of December 31, 2023
Cash and cash equivalents	$	173,266	$	160,817
Current portion of restricted cash	17,622		45,358
Restricted cash, noncurrent portion	12,625		12,752
Total	$	203,513	$	218,927

Concentration of Credit Risk

The Company maintains its cash in bank deposit accounts which, at times, may exceed Federal Deposit Insurance Corporation insurance limits. The Company has not experienced any losses in such accounts and believes it is not exposed to any significant credit risk on cash balances.

The Company had no customers that individually accounted for over 10% of total accounts receivable, net as of March 31, 2024 and no customers that individually accounted over 10% of total operating revenues, net for the three months ended March 31, 2024.

The Company had no customers that individually accounted for over 10% of total accounts receivable, net as of December 31, 2023. The Company had one customer that individually accounted for over 10% (i.e., 15.0%) of total operating revenues, net for the three months ended March 31, 2023.

Accounting Pronouncements

As a public company, the Company is provided the option to adopt new or revised accounting guidance as an “emerging growth company” under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) either (1) within the same periods as those otherwise applicable to public business entities, or (2) within the same time periods as non-public business entities, including early adoption when permissible. The Company expects to elect to adopt new or revised accounting guidance within the same time period as non-public business entities, as indicated below.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments in this update require disclosure of incremental segment information and the title and position of the chief operating decision maker ("CODM"). Registrants will be required to disclose significant segment expenses that are regularly provided to the CODM, as well as additional information on segment profit and loss measures and how such information is used by the CODM to assess segment performance and allocate resources. This ASU is effective for annual periods beginning in January 2024 and interim periods beginning in January 2025. The Company is currently evaluating the impact of this ASU, but does not currently expect it to have a material impact on its consolidated financial statements and related disclosures.

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Altus Power, Inc.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update require enhanced income tax disclosures, particularly related to a reporting entity's effective tax rate reconciliation and income taxes paid. For the rate reconciliation table, the update requires additional categories of information about federal, state, and foreign taxes and details about significant reconciling items, subject to a quantitative threshold. Income taxes paid must be similarly disaggregated by federal, state, and foreign based on a quantitative threshold. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The guidance shall be applied on a prospective basis with the option to apply retrospectively. The Company will apply the guidance upon the effective date. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures.

3.Revenue and Accounts Receivable

Disaggregation of Total Operating Revenues, net

The following table presents the detail of total operating revenues, net as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended March 31,
	2024		2023
Power sales under PPAs	$	12,625	$	8,986
Power sales under NMCAs	9,977		6,836
Power sales on wholesale markets	295		356
Total revenue from power sales	22,897		16,178
Solar renewable energy credit revenue	9,936		10,067
Rental income	2,085		626
Performance based incentives	4,807		2,098
Revenue recognized on contract liabilities	914		409
Other	20		—
Total operating revenues, net	$	40,659	$	29,378

Transaction price allocated to the remaining performance obligation

In accordance with optional exemptions available under Topic 606, the Company does not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less, (2) with the exception of fixed consideration, contracts for which revenue is recognized at the amount to which the Company have the right to invoice for goods provided and services performed, and (3) contracts for which variable consideration relates entirely to an unsatisfied performance obligation.

Contracts with fixed consideration consist primarily of performance obligations to supply fixed quantities of SRECs. Contracts with variable volumes and/or variable pricing, including those with pricing provisions tied to a consumer price or other index, have also been excluded as the related consideration under the contract is variable at inception of the contract. Most of the Company's solar renewable energy credit revenue is related to contracts with variable consideration.

The Company expects to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:

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Altus Power, Inc.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

2024	$	14,958
2025	15,329
2026	11,498
2027	5,967
2028	1,029
Total	$	48,781

Accounts receivable

The following table presents the detail of receivables as recorded in accounts receivable in the unaudited condensed consolidated balance sheets:

	As of March 31, 2024		As of December 31, 2023
Power sales under PPAs	$	6,557	$	3,582
Power sales under NMCAs	9,896		8,094
Power sales on wholesale markets	63		249
Total power sales	16,516		11,925
Solar renewable energy credits	3,324		3,379
Rental income	134		450
Performance based incentives	83		1,346
Total	$	20,057	$	17,100

Payments for all accounts receivable in the above table are typically received within 30 days from invoicing. As of both March 31, 2024, and December 31, 2023, the Company determined that the allowance for credit losses is $0.9 million.

Contract liabilities

The Company recognizes contract liabilities related to long-term agreements to sell solar renewable energy credits ("SRECs") that are prepaid by customers before SRECs are delivered. The Company will recognize revenue associated with the contract liabilities as SRECs are delivered to customers through 2037. As of March 31, 2024, the Company had current and non-current contract liabilities of $2.8 million and $6.1 million, respectively. As of December 31, 2023, the Company had current and non-current contract liabilities of $2.9 million and $5.6 million, respectively. The Company does not have any other significant contract asset or liability balances related to revenues.

Rental income

Rental income is primarily derived from the master lease agreement with Vitol (as described in Note 5, "Acquisitions"), as well as long-term PPAs accounted for as operating leases under ASC 842. The Company's leases include various renewal options which are included in the lease term when the Company has determined it is reasonably certain of exercising the options based on consideration of all relevant factors that create an economic incentive for the Company as lessor. Certain leases include variable lease payments associated with production of solar facilities, which are recognized as rental income in period the energy is delivered. Maturities of fixed rental payments as of March 31, 2024, are as follows:

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

2024	$	6,803
2025	6,118
2026	2,892
2027	513
2028	514
Thereafter	5,255
Total	$	22,095

4.Variable Interest Entities

The Company consolidates all variable interest entities (“VIEs”) in which it holds a variable interest and is deemed to be the primary beneficiary of the variable interest entity. Generally, a VIE is an entity with at least one of the following conditions: (a) the total equity investment at risk is insufficient to allow the entity to finance its activities without additional subordinated financial support, or (b) the holders of the equity investment at risk, as a group, lack the characteristics of having a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both 1) the power to direct the activities that most significantly impact the entity’s economic performance and 2) the obligations to absorb losses or receive benefits that could potentially be significant to the VIE.

The Company participates in certain partnership arrangements that qualify as VIEs. Consolidated VIEs consist primarily of tax equity financing arrangements and partnerships in which an investor holds a noncontrolling interest and does not have substantive kick-out or participating rights. The Company, through its subsidiaries, is the primary beneficiary of such VIEs, because as the manager, it has the power to direct the day-to-day operating activities of the entity. In addition, the Company is exposed to economics that could potentially be significant to the entity given its ownership interest and, therefore, has consolidated the VIEs as of March 31, 2024, and December 31, 2023. No VIEs were deconsolidated during the three months ended March 31, 2024 and 2023.

The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Company. In certain instances where the Company establishes a new tax equity structure, the Company is required to provide liquidity in accordance with the contractual agreements. The Company has no requirement to provide liquidity to purchase assets or guarantee performance of the VIEs unless further noted in the following paragraphs. The Company made certain contributions during the three months ended March 31, 2024 and 2023, as determined in the respective operating agreement.

The carrying amounts and classification of the consolidated VIE assets and liabilities included in condensed consolidated balance sheets are as follows:

	As of March 31, 2024		As of December 31, 2023
Current assets	$	25,201	$	22,298
Non-current assets	978,315		936,358
Total assets	$	1,003,516	$	958,656
Current liabilities	$	9,346	$	8,576
Non-current liabilities	159,151		141,360
Total liabilities	$	168,497	$	149,936

The amounts shown in the table above exclude intercompany balances which are eliminated upon consolidation. All of the assets in the table above are restricted for settlement of the VIE obligations, and all of the liabilities in the table above can only be settled using VIE resources.

The Company has not identified any VIEs during the three months ended March 31, 2024 and 2023, for which the Company determined that it is not the primary beneficiary and thus did not consolidate.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

The Company considered qualitative and quantitative factors in determining which VIEs are deemed significant. As of March 31, 2024 and December 31, 2023, the Company consolidated thirty-six and thirty-five VIEs, respectively. No VIEs were deemed significant as of March 31, 2024 and December 31, 2023.

5.Acquisitions

2024 Acquisitions

Vitol Acquisition

On January 31, 2024, the Company, through its wholly-owned subsidiary, Altus Power, LLC, acquired an 84 MW portfolio of 20 operating solar energy facilities located across five US states (the “Vitol Acquisition”). The portfolio was acquired from Vitol Solar I LLC (“Vitol”) through an acquisition of 100% of the outstanding membership interests in 18 project companies and 100% of the outstanding Class B membership interest in a partnership which owns 2 project companies. The total purchase price was approximately $119.7 million and the transaction was entered into by the Company to grow its portfolio of solar energy facilities. The purchase price and associated transaction costs were funded by cash on hand. The purchase price is also subject to customary adjustments for working capital and other items.

In conjunction with the acquisition, the Company entered into a master lease agreement to lease certain solar facilities back to Vitol, as well as an asset management agreement under which the Company will manage the solar facilities during the term of the master lease agreement. The master lease agreement is accounted for as an operating lease under ASC 842 and lease payments are included in rental income within the condensed consolidated statement of operations. The lease term varies by solar facility, with individual lease terms ending between 2024 and 2026.

The Company accounted for the Vitol Acquisition under the acquisition method of accounting for business combinations. Under the acquisition method, the purchase price was allocated to the assets acquired and liabilities assumed on January 31, 2024 based on their estimated fair value. All fair value measurements of assets acquired and liabilities assumed, including the noncontrolling interests, were based on significant estimates and assumptions, including Level 3 (unobservable) inputs, which require judgment. Estimates and assumptions include the estimates of future power generation, commodity prices, operating costs, and appropriate discount rates.

The assets acquired and liabilities assumed are recognized provisionally on the consolidated balance sheet at their estimated fair values as of the acquisition date. The initial accounting for the business combination is not complete as the Company is in the process of obtaining additional information for the valuation of acquired tangible and intangible assets as well as inputs utilized in the valuation of noncontrolling interests. The provisional amounts are subject to change to the extent that additional information is obtained about the facts and circumstances that existed as of the acquisition date. Under U.S. GAAP, the measurement period shall not exceed one year from the acquisition date and the Company will finalize these amounts no later than January 31, 2025.

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on January 31, 2024:

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

Assets
Accounts receivable	$	1,649
Property, plant and equipment	123,363
Operating lease asset	7,835
Other assets	1,691
Total assets acquired	134,538
Liabilities
Accounts payable	249
Intangible liabilities	2,370
Asset retirement obligation	1,374
Operating lease liability	7,187
Contract liability	1,130
Other liabilities	393
Total liabilities assumed	12,703
Non-controlling interests	2,100
Total fair value of consideration transferred	$	119,735

The fair value of consideration transferred, net of cash acquired, as of January 31, 2024, is determined as follows:

Cash consideration paid to Vitol on closing	$	119,690
Post-closing purchase price true-up	45
Total fair value of consideration transferred	$	119,735

The Company incurred approximately $0.7 million of acquisition related costs related to the Vitol Acquisition, which are recorded as part of Acquisition and entity formation costs in the condensed consolidated statement of operations for the three months ended March 31, 2024. Acquisition related costs include legal, consulting, and other transaction-related costs.

The impact of the Vitol Acquisition on the Company's revenue and net income in the consolidated statement of operations was an increase of $2.0 million and $1.2 million, respectively, for the three months ended March 31, 2024.

Intangibles at Acquisition Date

The Company attributed the intangible liability values to unfavorable rate revenue contracts to sell power and SRECs. The following table summarizes the estimated fair values and the weighted average amortization periods of the assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Unfavorable rate revenue contracts – PPA	(100)	11 years
Unfavorable rate revenue contracts – SREC	(2,270)	9 years

Unaudited Pro Forma Combined Results of Operations

The following unaudited pro forma combined results of operations give effect to the Vitol Acquisition as if it had occurred on January 1, 2023. The unaudited pro forma combined results of operations are provided for informational purposes only and do not purport to represent the Company’s actual consolidated results of operations had the Vitol Acquisition occurred on the date assumed, nor are these financial statements necessarily indicative of the Company’s future consolidated results of operations.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

The unaudited pro forma combined results of operations do not reflect the costs of any integration activities or any benefits that may result from operating efficiencies or revenue synergies.

	For the three months ended March 31, 2024 (unaudited)		For the three months ended March 31, 2023 (unaudited)
Operating revenues, net	$	41,281	$	31,474
Net income	4,866		3,722

Asset Acquisitions

During the three months ended March 31, 2024, the Company acquired a solar energy facility located in Massachusetts with a total nameplate capacity of 1.3 MW from a third party for a total purchase price of $4.0 million. The acquisition was accounted for as an acquisition of assets, whereby the Company acquired $4.0 million of property, plant and equipment and $0.6 million of operating lease assets, and assumed $0.6 million of operating lease liabilities. During the three months ended March 31, 2024, the Company also acquired land in Massachusetts from a third party for a total purchase price of $1.2 million.

2023 Acquisitions

Caldera Acquisition

On December 20, 2023, Altus Power, LLC, a wholly-owned subsidiary of the Company, acquired a 121 MW portfolio of 35 operating solar energy facilities located across six US states (the “Caldera Acquisition”). The portfolio was acquired from Project Hyperion Holdco LP (the “Seller”) for total consideration of $121.7 million. The purchase price and associated transaction costs were funded by the proceeds from an amendment of the APAF III Term Loan (as defined in Note 8, "Debt") and cash on hand. The Caldera Acquisition was made pursuant to the purchase and sale agreement (the "PSA") dated October 27, 2023, and entered into by the Company to grow its portfolio of solar energy facilities. Pursuant to the PSA, the Company acquired 100% ownership interest in Project Hyperion, LLC, a holding entity that owns the acquired solar energy facilities.

The Company accounted for the Caldera Acquisition under the acquisition method of accounting for business combinations. Under the acquisition method, the purchase price was allocated to the assets acquired and liabilities assumed on December 20, 2023, based on their estimated fair value. All fair value measurements of assets acquired and liabilities assumed, including the noncontrolling interests, were based on significant estimates and assumptions, including Level 3 (unobservable) inputs, which require judgment. Estimates and assumptions include the estimates of future power generation, commodity prices, operating costs, and appropriate discount rates.

The assets acquired and liabilities assumed are recognized provisionally on the consolidated balance sheet at their estimated fair values as of the acquisition date. The initial accounting for the business combination is not complete as the Company is in the process of obtaining additional information for the valuation of acquired tangible and intangible assets as well as inputs utilized in the valuation of noncontrolling interests. The provisional amounts are subject to change to the extent that additional information is obtained about the facts and circumstances that existed as of the acquisition date. Under U.S. GAAP, the measurement period shall not exceed one year from the acquisition date and the Company will finalize these amounts no later than December 20, 2024.

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on December 20, 2023:

	Provisional accounting as of December 20, 2023		Measurement period adjustments		Adjusted provisional accounting as of December 20, 2023
Assets
Accounts receivable	$	876	$	—	$	876
Property, plant and equipment	131,728		(223)		131,505
Intangible assets	350		—		350

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

Operating lease asset	15,557		—		15,557
Other assets	2,079		(95)		1,984
Total assets acquired	150,590		(318)		150,272
Liabilities
Intangible liabilities	5,200		—		5,200
Asset retirement obligation	1,920		—		1,920
Operating lease liability	17,567		—		17,567
Other liabilities	1,275		(244)		1,031
Total liabilities assumed	25,962		(244)		25,718
Non-controlling interests	2,900		—		2,900
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

The fair value of consideration transferred, net of cash acquired, as of December 20, 2023, is determined as follows:

Cash consideration paid to seller on closing	$	80,942	$	—	$	80,942
Cash consideration paid to settle debt on behalf of seller	38,966		—		38,966
Purchase price payable(1)	4,189		—		4,189
Contingent consideration payable	2,600		—		2,600
Total fair value of consideration transferred	126,697		—		126,697
Cash and restricted cash acquired	4,969		74		5,043
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

(1) The Company paid the entire purchase price payable amount after the acquisition date but prior to December 31, 2023.

The contingent consideration is related to the estimated earnout cash payment of a maximum of $8.0 million dependent on actual power generation of the acquired solar generating facilities during the 12-month period following the acquisition date. Refer to the Contingent Consideration section of Note 7, "Fair Value Measurements" for further information.

The Company incurred approximately $0.9 million of acquisition related costs related to the Caldera Acquisition, which are recorded as part of Acquisition and entity formation costs in the consolidated statement of operations for the year ended December 31, 2023. Acquisition related costs include legal, consulting, and other transaction-related costs.    

Intangibles at Acquisition Date

The Company attributed the intangible asset and liability values to favorable and unfavorable rate revenue contracts to sell SRECs. The following table summarizes the estimated fair values and the weighted average amortization periods of the acquired intangible assets and assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Favorable rate revenue contracts – SREC	350	4 years
Unfavorable rate revenue contracts – SREC	(5,200)	3 years

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

6. Debt

	As of March 31, 2024		As of December 31, 2023		Interest Type	Weighted average interest rate
Long-term debt
APAF Term Loan	$	471,466	$	474,609	Fixed	3.51	%
APAF II Term Loan	111,821		112,810		Floating*	SOFR + 1.475%
APAF III Term Loan	423,619		426,619		Fixed	6.03	%
APAF IV Term Loan	101,000		—		Fixed	6.45	%
APAGH Term Loan	100,000		100,000		Fixed	8.50	%
APAG Revolver	65,000		65,000		Floating	SOFR + 1.60%
APACF II Facility	31,868		—		Floating	SOFR + 3.25%
Other term loans	11,000		11,000		Fixed	3.04	%
Financing obligations recognized in failed sale leaseback transactions	42,850		42,767		Imputed	3.97	%
Total principal due for long-term debt	1,358,624		1,232,805
Unamortized discounts and premiums	(13,291)		(13,722)
Unamortized deferred financing costs	(18,085)		(16,165)
Less: Current portion of long-term debt	73,429		39,611
Long-term debt, less current portion	$	1,253,819	$	1,163,307

* Interest rate is effectively fixed by interest rate swap, see discussion below.

APAF Term Loan

On August 25, 2021, APA Finance, LLC (“APAF”), a wholly owned subsidiary of the Company, entered into a $503.0 million term loan facility with Blackstone Insurance Solutions (“BIS”) through a consortium of lenders, which consists of investment grade-rated Class A and Class B notes (the “APAF Term Loan”). The APAF Term Loan has a weighted average 3.51% annual fixed rate and matures on February 29, 2056 (“Final Maturity Date”).

The APAF Term Loan amortizes at an initial rate of 2.5% of outstanding principal per annum for a period of 8 years at which point the amortization steps up to 4% per annum until September 30, 2031 (“Anticipated Repayment Date”). After the Anticipated Repayment Date, the loan becomes fully-amortizing, and all available cash is used to pay down principal until the Final Maturity Date. The APAF Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF Term Loan was $471.5 million less unamortized debt discount and loan issuance costs totaling $6.5 million. As of December 31, 2023, the outstanding principal balance of the APAF Term Loan was $474.6 million less unamortized debt discount and loan issuance costs totaling $6.7 million.

As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF Term Loan.

APAF II Term Loan

On December 23, 2022, APA Finance II, LLC (“APAF II”), a wholly owned subsidiary of the Company, entered into a $125.7 million term loan facility (the “APAF II Term Loan”) with KeyBank National Association ("KeyBank") and The Huntington Bank ("Huntington") as lenders. The proceeds of the APAF II Term Loan were used to repay the outstanding amounts under certain project-level loans. The APAF II Term Loan matures on December 23, 2027, and has a variable interest rate based on the Secured Overnight Financing Rate (“SOFR”) plus a spread of 1.475%. Simultaneously with entering into the APAF II Term Loan, the Company entered into interest rate swaps for 100% of the amount of debt outstanding, which effectively fixed the interest rate at 4.885% (see Note 7, "Fair Value Measurements," for further details). The APAF II Term Loan is secured by membership interests in the Company's subsidiaries.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

As of March 31, 2024, the outstanding principal balance of the APAF II Term Loan was $111.8 million, less unamortized debt issuance costs of $2.0 million. As of December 31, 2023, the outstanding principal balance of the APAF II Term Loan was $112.8 million, less unamortized debt issuance costs of $2.2 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF II Term Loan.

APAF III Term Loan

On February 15, 2023, the Company, through its subsidiaries, APA Finance III Borrower, LLC (the “APAF III Borrower”) and APA Finance III Borrower Holdings, LLC (“Holdings”), entered into a new long-term funding facility under the terms of a credit agreement among the APAF III Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF III Term Loan”).

This funding facility provides for a term loan of $204.0 million at a fixed rate of 5.62%. The APAF III Term Loan amortizes at a rate of 2.5% of initial outstanding principal until the anticipated repayment date of June 30, 2033. The maturity date of the term loan is October 31, 2047. Upon lender approval, the APAF III Borrower has the right to increase the funding facility to make additional draws for certain solar generating facilities, as set forth in the credit agreement. On February 15, 2023, the Company borrowed $193.0 million from this facility to fund the True Green II Acquisition and the associated costs and expenses. The principal balance borrowed under the APAF III Term Loan was offset by $4.0 million of debt issuance costs and $6.3 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033. The APAF III Term Loan is secured by membership interests in the Company's subsidiaries.

On June 15, 2023 and July 21, 2023, the Company amended the APAF III Term Loan to add $47.0 million and $28.0 million of additional borrowings, respectively, the proceeds of which were used to repay outstanding term loans under the Construction to Term Loan Facility (as defined below), and to provide long-term financing for new solar projects. The principal balance borrowed under the amendments was offset by $0.3 million and $0.2 million of issuance costs, respectively, and $1.5 million and $1.1 million of issuance discount, respectively, which have been deferred and will be recognized as interest expense through June 30, 2033.

On December 20, 2023, the Company amended the APAF III Term Loan to add $163.0 million of additional borrowings, the proceeds of which were used to fund the Caldera Acquisition. The amendment increased the weighted average fixed interest rate for all borrowings under the APAF III Term Loan to 6.03%, and increased the rate of amortization for the new borrowings under the amendment to 3.25% per annum until June 30, 2033. The principal balance borrowed under the amendment was offset by $1.3 million of issuance costs and $0.8 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033.

As of March 31, 2024, the outstanding principal balance of the APAF III Term Loan was $423.6 million, less unamortized debt issuance costs and discount of $14.0 million. As of December 31, 2023, the outstanding principal balance of the APAF III Term Loan was $426.6 million, less unamortized debt issuance costs and discount of $14.3 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

APAF IV Term Loan

On March 26, 2024, the Company, through its subsidiaries, APA Finance IV, LLC (the “APAF IV Borrower”), and APA Finance IV Holdings, LLC (“Holdings”) has entered into a new term loan facility under the terms of a credit agreement among the APAF IV Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF IV Term Loan”).

The APAF IV Term Loan, which matures on March 26, 2049, bears interest at a fixed rate of 6.45% per annum on outstanding principal amounts under the term loan. The Term Loan Facility has an anticipated repayment date of June 30, 2034. Upon lender approval, the APAF IV Borrower has the right to increase the Term Loan Facility to make additional draws for certain acquisitions of solar assets that otherwise satisfy the criteria for permitted acquisitions, as defined in the credit agreement. On March 26, 2024, the Company borrowed $101.0 million under the APAF IV Term Loan in connection with the Vitol Acquisition, which closed on January 31, 2024. The principal balance borrowed under the APAF IV Term Loan was offset by

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

$1.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through June 30, 2034. The APAF IV Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF IV Term Loan was $101.0 million, less unamortized debt issuance costs and discount of $1.6 million. As of March 31, 2024, the Company was in compliance with all covenants under the APAF IV Term Loan.

APAGH Term Loan

On December 27, 2023, APA Generation Holdings, LLC (“APAGH” or the “APAGH Borrower”), a wholly owned subsidiary of the Company, entered into a credit agreement (the “APAGH Term Loan”) with an affiliate of Goldman Sachs Asset Management and CPPIB Credit Investments III Inc., a subsidiary of Canada Pension Plan Investment Board, as “Lenders.” The total commitment under the credit agreement is $100.0 million. The Company can also allow for the funding of additional incremental loans in an amount not to exceed $100.0 million over the term of the credit agreement at the discretion of the Lenders. Subject to certain exceptions, the APAGH Borrower’s obligations to the Lenders are secured by the assets of the APAGH Borrower, its parent, Altus Power, LLC (“Holdings”) and the Company and are further guaranteed by Holdings and the Company.

Interest accrues on any outstanding balance at an initial fixed rate equal to 8.50%, subject to adjustments. The maturity date of the term loan is December 27, 2029.

On December 27, 2023, the Company borrowed $100.0 million under the APAGH Term Loan to fund future growth needs, which was partially offset by $3.0 million of issuance discount. The Company incurred $1.0 million of debt issuance costs related to the APAGH Term Loan, which have been deferred and will be recognized as interest expense through December 27, 2029.

As of March 31, 2024, the outstanding principal balance of the APAGH Term Loan was $100.0 million, less unamortized debt issuance costs of $3.8 million. As of December 31, 2023, the outstanding principal balance of the APAGH Term Loan was $100.0 million, less unamortized debt issuance costs and discount of $4.0 million. As of March 31, 2024 and December 31, 2023, the Company was in compliance with all covenants.

APAG Revolver

On December 19, 2022, APA Generation, LLC (“APAG”), a wholly owned subsidiary of the Company, entered into revolving credit facility with Citibank, N.A. with a total committed capacity of $200.0 million (the "APAG Revolver"). Outstanding amounts under the APAG Revolver have a variable interest rate based on a base rate and an applicable margin. The APAG Revolver is secured by membership interests in the Company's subsidiaries. The APAG Revolver matures on December 19, 2027. As of March 31, 2024, and December 31, 2023, there was $65.0 million outstanding under the APAG Revolver. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAG Revolver.

APACF II Facility

On November 10, 2023, APACF II, LLC (“APACF II” or the “APACF II Borrower”) a wholly-owned subsidiary of the Company, entered into a credit agreement among the APACF II Borrower, APACF II Holdings, LLC, Pass Equipment Co., LLC, each of the project companies from time to time party thereto, each of the tax equity holdcos from time to time party thereto, U.S. Bank Trust Company, National Association, U.S. Bank National Association, each lender from time to time party thereto (collectively, the “Lenders”) and Blackstone Asset Based Finance Advisors LP, as Blackstone representative (“APACF II Facility”).

The aggregate amount of the commitments under the credit agreement is $200.0 million. The APACF II Facility matures on November 10, 2027, and bears interest at an annual rate of SOFR plus 3.25%. Borrowings under the APACF II Facility, which mature 364 days after the borrowing occurs, may be used by the APACF II Borrower to fund construction costs including equipment, labor, interconnection, as well as other development costs. The Company incurred $0.3 million of debt issuance costs related to the APACF II Facility, which have been deferred and will be recognized as interest expense through November 10, 2027. On January 19, 2024, the Company borrowed $31.9 million under the APACF II Facility, which was

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

offset by $0.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through November 10, 2027. The APACF II Facility is secured by membership interests in the Company's subsidiaries and other collateral, including equipment.

As of March 31, 2024, the outstanding principal balance of the APACF II Facility was $31.9 million, less unamortized debt issuance costs of $0.9 million. As of December 31, 2023, no amounts were outstanding under the APACF II Facility. As of March 31, 2024, the Company was in compliance with all covenants under the APACF II Facility.

Other Term Loans - Construction to Term Loan Facility

On January 10, 2020, APA Construction Finance, LLC (“APACF”) a wholly-owned subsidiary of the Company, entered into a credit agreement with Fifth Third Bank, National Association and Deutsche Bank AG New York Branch to fund the development and construction of future solar facilities (“Construction Loan to Term Loan Facility”). The Construction Loan to Term Loan Facility included a construction loan commitment of $187.5 million, which expired on January 10, 2023. The construction loan commitment can convert to a term loan upon commercial operation of a particular solar energy facility. On June 15, 2023, the Company repaid all outstanding term loans of $15.8 million and terminated the facility.

Other Term Loans - Project-Level Term Loan

In conjunction with an acquisition of assets on August 29, 2022, the Company assumed a project-level term loan with an outstanding principal balance of $14.1 million and a fair value discount of $2.2 million. The term loan is subject to scheduled semi-annual amortization and interest payments, and matures on September 1, 2029.

As of March 31, 2024, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.7 million. As of December 31, 2023, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.8 million.

The term loan is secured by an interest in the underlying solar project assets and the revenues generated by those assets. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

Letter of Credit Facilities and Surety Bond Arrangements

The Company enters into letters of credit and surety bond arrangements with lenders, local municipalities, government agencies, and land lessors. These arrangements relate to certain performance-related obligations and serve as security under the applicable agreements. As of March 31, 2024, the Company had $52.3 million of letters of credit outstanding and $51.1 million of unused capacity. As of December 31, 2023, the Company had $54.7 million of letters of credit outstanding and $54.4 million of unused capacity. Additionally, as of March 31, 2024 and December 31, 2023, the Company had outstanding surety bonds of $5.9 million and $5.4 million, respectively.

To the extent liabilities are incurred as a result of the activities covered by the letters of credit or surety bonds, such liabilities are included on the accompanying condensed consolidated balance sheets. From time to time, the Company is required to post financial assurances to satisfy contractual and other requirements generated in the normal course of business. Some of these assurances are posted to comply with federal, state or other government agencies’ statutes and regulations. The Company sometimes uses letters of credit to satisfy these requirements and these letters of credit reduce the Company’s borrowing facility capacity.

Financing Obligations Recognized in Failed Sale Leaseback Transactions

From time to time, the Company sells equipment to third parties and enters into master lease agreements to lease the equipment back for an agreed-upon term. The Company has assessed these arrangements and determined that the transfer of assets should not be accounted for as a sale in accordance with ASC 842. Therefore, the Company accounts for these transactions using the financing method by recognizing the consideration received as a financing obligation, with the assets subject to the transaction remaining on the balance sheet of the Company and depreciated based on the Company's normal depreciation policy. The aggregate proceeds have been recorded as long-term debt within the condensed consolidated balance sheets.

As of March 31, 2024, the Company's recorded financing obligations were $41.9 million, net of $0.9 million of deferred transaction costs. As of December 31, 2023, the Company's recorded financing obligations were $41.8 million, net of $0.9

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

million of deferred transaction costs. Payments of $0.3 million and $0.2 million were made under financing obligations for the three months ended March 31, 2024, and 2023, respectively. Interest expense, inclusive of the amortization of deferred transaction costs for the three months ended March 31, 2024 and 2023, was $0.4 million.

During the three months ended March 31, 2023, the Company paid $0.5 million to extinguish financing obligations of $0.6 million, resulting in a gain on extinguishment of debt of $0.1 million. During the three months ended March 31, 2024, the Company extinguished no financing obligations.

The table below shows the payments required under the failed sale-leaseback financing obligations for the years ended:

2024	$	2,788
2025	3,023
2026	2,995
2027	2,986
2028	2,967
Thereafter	14,143
Total	$	28,902

The difference between the outstanding financing obligation of $42.9 million and $28.9 million of contractual payments due, including residual value guarantees, is due to $13.2 million of investment tax credits claimed by the respective counterparties, less $2.6 million of the implied interest on financing obligations included in minimum lease payments. The remaining difference is due to $3.8 million of interest accrued and a $0.4 million difference between the required contractual payments and the fair value of financing obligations acquired.

7.Fair Value Measurements

The Company measures certain assets and liabilities at fair value, which is defined as the price that would be received from the sale of an asset or paid to transfer a liability (i.e., an exit price) on the measurement date in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. Our fair value measurements use the following hierarchy, which prioritizes valuation inputs based on the extent to which the inputs are observable in the market.

•Level 1 - Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.

•Level 2 - Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs are observable in active markets are Level 2 valuation techniques.

•Level 3 - Valuation techniques in which one or more significant inputs are unobservable. Such inputs reflect our estimate of assumptions that market participants would use to price an asset or liability.

The Company holds various financial instruments that are not required to be recorded at fair value. For cash, restricted cash, accounts receivable, accounts payable, and short-term debt, the carrying amounts approximate fair value due to the short maturity of these instruments.

The following table provides the financial instruments measured at fair value on a recurring basis:

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

	March 31, 2024
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market fund	$	62,695	$	—	$	—	$	62,695
Derivative assets:
Interest rate swaps	$	—	$	2,585	$	—	$	2,585
Total assets at fair value	62,695		2,585		—		65,280
Liabilities
Alignment Shares liability	—		—		34,415		34,415
Other long-term liabilities:
True Green II Acquisition - contingent liability	—		—		4,880		4,880
Caldera Acquisition - contingent liability	—		—		2,300		2,300
Total liabilities at fair value	—		—		41,595		41,595

	December 31, 2023
	Level 1	Level 2	Level 3	Total
Assets
Derivative assets:
Interest rate swaps	—	530	—	530
Total assets at fair value	—	530	—	530
Liabilities
Alignment Shares liability	—	—	60,502	60,502
Other long-term liabilities:
True Green II Acquisition - contingent liability	—	—	4,658	4,658
Caldera Acquisition - contingent liability	—	—	2,600	2,600
Total liabilities at fair value	—	—	67,760	67,760

Alignment Shares Liability

As of March 31, 2024, the Company had 796,950 Alignment Shares outstanding, all of which are held by CBRE Acquisition Sponsor, LLC (the "Sponsor"), certain former officers of CBAH (such officers, together with the Sponsor, the “Sponsor Parties”) and former CBAH directors. The Alignment Shares will automatically convert into shares of Class A common stock based upon the Total Return (as defined in Exhibit 4.4 to our 2022 Annual Report on Form 10-K) on the Class A common stock as of the relevant measurement date over each of the seven fiscal years following the Merger.

Upon the consummation of the Merger, Alignment Shares have no continuing service requirement and do not create an unconditional obligation requiring the Company to redeem the instruments by transferring assets. In addition, the shares convert to a variable number of Class A common stock depending on the trading price of the Class A common stock and dividends paid/payable to the holders of Class A common stock. Therefore, the shares do not represent an obligation or a conditional obligation to issue a variable number of shares with a monetary value based on any of the criteria in ASC 480, Distinguishing

Liabilities From Equity. The Company determined that the Alignment Shares meet the definition of a derivative because they contain (i) an underlying (Class A common stock price), (ii) a notional amount (a fixed number of Class B common stock), (iii) no or minimal initial net investment (the Sponsor paid a de minimis amount which is less than the estimated fair value of the shares), and (iv) net settleable through a conversion of the Alignment Shares into Class A shares. As such, the Company concluded that the Alignment Shares meet the definition of a derivative, which will be presented at fair value each reporting period, with changes in fair value recorded through earnings.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

The Company estimates the fair value of outstanding Alignment Shares using a Monte Carlo simulation valuation model utilizing a distribution of potential outcomes based on a set of underlying assumptions such as stock price, volatility, and risk-free interest rate. As volatility of 70% and risk-free interest rate of 4.31% are not observable inputs, the overall fair value measurement of Alignment Shares is classified as Level 3. Unobservable inputs can be volatile and a change in those inputs might result in a significantly higher or lower fair value measurement of Alignment Shares.

	For the three months ended March 31, 2024			For the three months ended March 31, 2023
	Shares	$		Shares	$
Beginning balance	996,188	$	60,502	1,207,500	$	66,145
Alignment Shares converted	(199,238)	(10)		(201,250)	(11)
Fair value remeasurement	—	(26,077)		—	(17,018)
Ending balance	796,950	$	34,415	1,006,250	$	49,116

Interest Rate Swaps

The Company's derivative instruments consist of interest rate swaps that are not designated as cash flow hedges or fair value hedges under accounting guidance. The Company uses interest rate swaps to manage its net exposure to interest rate changes. These instruments are custom, over-the-counter contracts with various bank counterparties that are not traded on an active market but valued using readily observable market inputs and the overall fair value measurement is classified as Level 2. As of March 31, 2024 and December 31, 2023, the notional amounts were $118.8 million and $112.8 million, respectively. For the three months ended March 31, 2024 and 2023, the change in fair value of interest rate swaps resulted in a gain of $2.1 million and a gain of $2.7 million, respectively, which was recorded as interest expense in the condensed consolidated statements of operations.

Forward Starting Interest Rate Swap

The Company entered into a forward starting interest rate swap on January 31, 2023, with an effective date of January 31, 2025, and a termination date of January 31, 2035. This transaction had a notional amount of $250.0 million, was designated as a cash flow hedge of the Company's forecasted fixed-rate or floating-rate debt issuances.

Later in 2023, the Company terminated the forward starting interest rate swap for total cash proceeds of $16.7 million. The total gain of $17.3 million, was recorded as a component of Other comprehensive income in the condensed consolidated statements of comprehensive income for the year ended December 31, 2023. The Company allocated $238.0 million of the notional amount to the incremental debt issuances under the APAF III Term Loan and $12.0 million to the APAF IV Term Loan.

Other comprehensive income of $17.3 million associated with the incremental debt issuances under the APAF III Term Loan and APAF IV Term Loan is recognized as an adjustment to interest expense, net over the term of the debt. For the three months ended March 31, 2024, the adjustment to Interest expense, net was $0.4 million. Approximately $1.6 million of the gain in other comprehensive income will be reclassified into earnings during the next 12 months.

The cash flow hedge was determined to be fully effective during the three months ended March 31, 2024. As such, no amount of ineffectiveness has been included in net income. The amount included in other comprehensive income will be reclassified to current earnings should all or a portion of the hedge no longer be considered effective. The Company expects the hedge to remain fully effective during the remaining term of the swap.

Contingent Consideration

Caldera Acquisition

In connection with the Caldera Acquisition on December 20, 2023, contingent consideration of $8.0 million may be payable upon achieving certain power volumes generated by the acquired solar energy facilities. The Company estimated the fair value of contingent consideration for future earnout payments using a Monte Carlo simulation model. Significant assumptions used in the measurement include the estimated volumes of power generation of acquired solar energy facilities during the 12-month period since the acquisition date and the risk-adjusted discount rate associated with the business. As the inputs are not

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

observable, the overall fair value measurement of the contingent consideration is classified as Level 3. As of March 31, 2024 and December 31, 2023, the fair value of the contingent consideration was $2.3 million and $2.6 million, respectively, and was included in Other current liabilities in the condensed consolidated balance sheets. For the three months ended March 31, 2024, the Company recorded a gain on remeasurement of contingent liability of $0.3 million.

True Green II Acquisition

In connection with the acquisition of a portfolio of 58 solar energy facilities with a combined nameplate capacity of 220 MW on February 15, 2023 (the "True Green II acquisition"), contingent consideration of $10.0 million may be payable upon the seller's completion of in-development solar energy facilities and the Company obtaining tax equity financing. The Company estimated the fair value of the contingent consideration by using the expected cash flow approach. These cash flows were then discounted to present value using the risk-adjusted discount rate associated with the business. As the inputs are not observable, the overall fair value measurement of the contingent consideration is classified as Level 3. As of March 31, 2024 and December 31, 2023, the fair value of the contingent consideration was $4.9 million and $4.7 million, respectively, and was included in Other current liabilities in the condensed consolidated balance sheets. For the three months ended March 31, 2024, the Company recorded $0.2 million loss on fair value remeasurement of contingent liability associated with the True Green II Acquisition in the condensed consolidated statements of operations. The loss was recorded due to the remeasurement of the contingent liability based on the actual amount of tax equity financing received.

Solar Acquisition

In connection with the acquisition of a portfolio of sixteen solar energy facilities with a combined nameplate capacity of 61.5 MW on December 22, 2020 (the "Solar Acquisition"), contingent consideration of $3.1 million may be payable upon achieving certain market power rates and $7.4 million upon achieving certain power volumes generated by the acquired solar energy facilities. The Company estimated the fair value of the contingent consideration for future earnout payments using a Monte Carlo simulation model. Significant assumptions used in the measurement include the estimated volumes of power generation of acquired solar energy facilities during the 18-36-month period since the acquisition date, market power rates during the 36-month period, and the risk-adjusted discount rate associated with the business. As the inputs are not observable, the overall fair value measurement of the contingent consideration is classified as Level 3.

The liability for the contingent consideration associated with production volumes expired on June 30, 2022. The liability for the contingent consideration associated with power rates is included in Other long-term liabilities in the condensed consolidated balance sheets at the estimated fair value of $3.1 million as of March 31, 2024 and December 31, 2023. For the three months ended March 31, 2024 and 2023, the Company recorded a loss on fair value remeasurement of contingent consideration associated with power rates of zero and $0.1 million, respectively, within operating income in the condensed consolidated statements of operations. Gains and losses are recorded due to changes in significant assumptions used in the measurement, including the actual versus estimated volumes of power generation of acquired solar energy facilities and market power rates. As of December 31, 2023, the 36-month measurement period for the contingent liability associated with market power rates has ended and the contingency was resolved with $3.1 million payable in 2024.

8.Equity

As of March 31, 2024, the Company had 988,591,250 authorized and 159,874,981 issued and outstanding shares of Class A common stock. As of December 31, 2023, the Company had 988,591,250 authorized and 158,999,886 issued and outstanding shares of Class A common stock, respectively. Class A common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the Company’s board of directors. As of March 31, 2024, and December 31, 2023, no common stock dividends have been declared.

As of March 31, 2024, and December 31, 2023, the Company had 796,950 and 996,188 authorized and issued shares of Class B common stock, respectively, also referred to as the Alignment Shares. Refer to Note 7, "Fair Value Measurements," for further details.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

9.Redeemable Noncontrolling Interests

The changes in the components of redeemable noncontrolling interests are presented in the table below:

	For the three months ended March 31,
	2024		2023
Redeemable noncontrolling interest, beginning balance	$	26,044	$	18,133
Cash distributions	(571)		(576)
Accrued distributions	(206)		—
Redemption of redeemable noncontrolling interests	—		(2,175)
Assumed redeemable noncontrolling interest through business combination	—		8,100
Net (loss) income attributable to redeemable noncontrolling interest	(878)		861
Redeemable noncontrolling interest, ending balance	$	24,389	$	24,343

10.Leases

The following table presents the components of operating lease cost for the three months ended March 31, 2024, and 2023:

	For the three months ended March 31,
	2024		2023
Operating lease expense	$	4,069	$	2,391
Variable lease expense	418		357
Total lease expense	$	4,487	$	2,748

The following table presents supplemental information related to our operating leases:

	For the three months ended March 31,
	2024		2023
Operating cash flows from operating leases	$	4,064	$	2,238
Operating lease assets obtained in exchange for new operating lease liabilities	$	11,891	$	32,722
Weighted average remaining lease term, years	23.6 years		22.0 years
Weighted average discount rate	5.75%		5.15%

Maturities of operating lease liabilities as of March 31, 2024, are as follows:

2024	$	12,143
2025	15,829
2026	15,952
2027	16,048
2028	16,100
Thereafter	294,720
Total	$	370,792
Less: Present value discount	(175,363)
Lease liability	$	195,429

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

11.Commitments and Contingencies

Legal

The Company is a party to a number of claims and governmental proceedings which are ordinary, routine matters incidental to its business. In addition, in the ordinary course of business the Company periodically has disputes with vendors and customers. The outcomes of these matters are not expected to have, either individually or in the aggregate, a material adverse effect on the Company’s financial position or results of operations.

Performance Guarantee Obligations

The Company guarantees certain specified minimum solar energy production output under the Company’s power purchase agreements ("PPAs"), generally over a term of 10, 15 or 25 years. The solar energy systems are monitored to ensure these outputs are achieved. The Company evaluates if any amounts are due to customers based upon not meeting the guaranteed solar energy production outputs at each reporting period end. As of March 31, 2024, and December 31, 2023, the guaranteed minimum solar energy production has been met and the Company has recorded no performance guarantee obligations.

Purchase Commitments

In the ordinary course of business, the Company makes various commitments to purchase goods and services from specific suppliers. As of March 31, 2024, and December 31, 2023, the Company had zero outstanding non-cancellable commitments to purchase solar modules.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

12.Related Party Transactions

There was $0.1 million and $0.1 million due to related parties, as discussed below, and no amounts due from related parties as of March 31, 2024, and December 31, 2023, respectively. Additionally, in the normal course of business, the Company conducts transactions with affiliates, including:

Blackstone Credit Facilities

Under the APAF Term Loan, APAF III Term Loan, APAF IV Term Loan, and APACF II Facility, subsidiaries of The Blackstone Group (“Blackstone”), a related party, serve as agents between the Company and a consortium of third-party lenders. See Note 6, "Debt" for further details.

During the three months ended March 31, 2024 and 2023, the Company paid $0.2 million and $0.7 million, respectively, of loan issuance costs to Blackstone.

Commercial Collaboration Agreement with CBRE

In connection with the Merger, the Company and CBRE entered into a commercial collaboration agreement (the “Commercial Collaboration Agreement”) effective upon the Merger, pursuant to which, among other things, CBRE will invite the Company to join CBRE’s strategic supplier program and CBRE will promote the Company as its preferred clean energy renewable provider/partner, CBRE and the Company will create a business opportunity referral program with CBRE’s brokers, CBRE will reasonably collaborate with the Company to develop and bring to market new products and/or bundles for Company’s customers, the Company will consider in good faith inviting CBRE to become a solar tax equity partner for the Company, on a non-exclusive basis, on market terms to be mutually agreed and CBRE will provide, at no cost to the Company, reasonable access to data-driven research and insights prepared by CBRE (subject to certain exceptions). The Commercial Collaboration Agreement continues for a period of seven years, with automatic one-year renewal period, unless earlier terminated by either party in accordance with the terms set forth therein.

On December 9, 2022, the Company amended the Commercial Collaboration Agreement to update the business arrangement and associated fee approach, which provides that CBRE employees, including brokers, non-brokers and other employees who partnered with the Company to bring clean electrification solutions to CBRE’s client base, who met certain minimum criteria (“Qualified Referral”) and who documented such Qualified Referral via an executed Development Agreement, would receive a development fee of between $0.015/watt to $0.030/watt depending on the business segment and teams of such CBRE employees. For the three months ended March 31, 2024 and 2023, the Company did not incur any costs associated with the Commercial Collaboration Agreement. As of March 31, 2024 and December 31, 2023, there were no amounts due to CBRE associated with the Commercial Collaboration Agreement.

Master Services Agreement with CBRE

On June 13, 2022, the Company, through its wholly-owned subsidiary, entered into a Master Services Agreement ("MSA") with CBRE under which CBRE assists the Company in developing solar energy facilities. For the three months ended March 31, 2024 and 2023, the Company incurred $0.2 million and $0.1 million, respectively, for development services provided under the PSA. As of March 31, 2024, and December 31, 2023, there was $0.1 million due to CBRE for development services provided under the MSA.

Lease Agreements with Link Logistics and CBRE

The Company has a right to use rooftops to develop and operate solar facilities under lease agreements with subsidiaries of Link Logistics Real Estate Management LLC (“Link Logistics”), a Blackstone portfolio company, and subsidiaries of CBRE. As of March 31, 2024, and December 31, 2023, the Company recognized operating lease assets and operating lease liabilities of $27.1 million and $24.3 million, respectively, in the condensed consolidated balance sheet related to these leases, which have a weighted average remaining lease term of 29 years. During the three months ended March 31, 2024 and 2023, payments made under these leases were $0.7 million and zero, respectively.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

13.Earnings per Share

The calculation of basic and diluted earnings per share for the three months ended March 31, 2024 and 2023 was as follows (in thousands, except share and per share amounts):

	For the three months ended March 31,
	2024		2023
Net income attributable to Altus Power, Inc.	7,509		5,617
Income attributable to participating securities(1)	(38)		(36)
Net income attributable to common stockholders - basic and diluted	7,471		5,581
Class A Common Stock
Weighted average shares of common stock outstanding - basic(2)	159,025,740		158,621,674
Dilutive restricted stock	—		258,789
Dilutive RSUs	3,216,408		2,120,928
Dilutive conversion of Alignment Shares	—		2,011
Weighted average shares of common stock outstanding - diluted	162,242,148		161,003,402
Net income attributable to common stockholders per share - basic	$	0.05	$	0.04
Net income attributable to common stockholders per share - diluted	$	0.05	$	0.03

(1) Represents the income attributable to 796,950 and 1,006,250 Alignment Shares outstanding as of March 31, 2024 and 2023, respectively.

(2) For the three months ended March 31, 2023, the calculation of basic weighted average shares of common stock outstanding excludes 271,259 shares of the Company's Class A common stock provided to holders of the common stock of the Company prior to the Merger, including shares that were subject to vesting conditions.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

14.Stock-Based Compensation

The Company recognized $4.3 million and $2.9 million of stock-based compensation expense for the three months ended March 31, 2024, and 2023, respectively. As of March 31, 2024, the Company had $46.9 million of unrecognized share-based compensation expense related to unvested restricted units, respectively, which the Company expects to recognize over a weighted average period of approximately 2 years.

Legacy Incentive Plans

Prior to the Merger, Legacy Altus maintained the APAM Holdings LLC Restricted Units Plan, adopted in 2015 (the “APAM Plan”) and APAM Holdings LLC adopted the 2021 Profits Interest Incentive Plan (the “Holdings Plan”, and together with the APAM Plan, the “Legacy Incentive Plans”), which provided for the grant of restricted units that were intended to qualify as profits interests to employees, officers, directors and consultants. In connection with the Merger, vested restricted units previously granted under the Legacy Incentive Plans were exchanged for shares of Class A Common Stock, and unvested Altus Restricted Shares under each of the Legacy Incentive Plans were exchanged for restricted Class A Common Stock with the same vesting conditions. As of March 31, 2024, and December 31, 2023, zero and 210,710 shares of Class A Common Stock were restricted under the Holdings Plan, respectively. No further awards will be made under the Legacy Incentive Plans.

The fair value of the granted units was determined using the Black-Scholes Option Pricing model and relied on assumptions and inputs provided by the Company. All option models utilize the same assumptions with regard to (i) current valuation, (ii) volatility, (iii) risk-free interest rate, and (iv) time to maturity. The models, however, use different assumptions with regard to the strike price which vary by award.

Omnibus Incentive Plan

On July 12, 2021, the Company entered into the Management Equity Incentive Letter with each of Mr. Felton and Mr. Norell pursuant to which, on February 5, 2022, the compensation committee granted to Mr. Felton and Mr. Norell, together with other senior executives, including Mr. Savino, Chief Construction Officer, and Mr. Weber, Chief Financial Officer, restricted stock units (“RSUs”) under the Omnibus Incentive Plan (the "Incentive Plan") that are subject to time-based and, for the named executive officers and certain other executives, eighty percent (80%) of such RSUs also further subject to performance-based vesting, with respect to an aggregate five percent (5%) of the Company’s Class A common stock on a fully diluted basis, excluding the then-outstanding shares of the Company’s Class B common stock or any shares of the Company’s Class A common stock into which such shares of the Company’s Class B common stock are or may be convertible. Subject to continued employment on each applicable vesting date, the time-based RSUs generally vest 33 1/3% on each of the third, fourth and fifth anniversaries of the Closing, and the performance-based RSUs vest with respect to 33 1/3% of the award upon the achievement of the above time-based requirement and the achievement of a hurdle representing a 25% annual compound annual growth rate measured based on an initial value of $10.00 per share (i.e., on each of the third anniversary, the fourth anniversary, and the fifth anniversary of the date of grant, the stock price performance hurdle shall be $19.53, $24.41, and $30.51, respectively), which vesting is eligible until the fifth anniversary of grant date.

On March 28, 2024, these vesting conditions of such performance-based RSUs were modified by the compensation committee to set the hurdles at $14.00, $18.00, and $22.00, respectively. This modification impacted five grantees and resulted in $3.1 million of incremental expense, which the Company expects to recognize over a weighted average period of 2 years.

Additionally, under the Incentive Plan the Company granted performance stock units ("PSUs") that are subject to market and service vesting conditions, each of which represents the right to receive one share of the Company's Class A Common Stock and which vest in one installment on the third anniversary of the grant date based upon the Company's total stockholder return when compared to the Invesco Solar ETF (TAN), subject to certain adjustments, and the Russell 2000 index, assigning a weight of 50% to each. The number of PSUs vested, and thus shares of Class A Common Stock issued, could range from 0 to 150% of such PSUs.

During the three months ended March 31, 2024, the Company granted under the Incentive Plan an additional 2,973,127 RSUs, that are subject to time-based vesting as described above, with a weighted average grant date fair value per share of $4.89. The Company also granted 546,024 PSUs that are subject to market-based vesting as described above, with a grant date fair value per share of $5.22. Further, the Company granted 751,773 of incentive performance stock units ("GW Plan PSUs") that cliff vest on December 31, 2026, if the the Company adds 1.1 gigawatt of installed solar capacity starting January 1, 2024 and subject to continued employment on the vesting date. The number of GW Plan PSUs vested, and thus shares of Class A

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

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	%

GW Plan PSUs have a grant date fair value per share of $3.95.

The fair value of awards granted and modified during the period was estimated as of the respective grant dates using a Monte Carlo model utilizing a distribution of potential outcomes based on expected volatility of 66% - 69%, a risk-free interest rate of 4.4%, and an expected term of approximately 1-3 years.

As of March 31, 2024, and December 31, 2023, there were 30,992,545 shares of the Company's Class A common stock authorized for issuance under the Incentive Plan. The number of shares authorized for issuance under the Incentive Plan will increase on January 1 of each year from 2024 to 2031 by the lesser of (i) 5% of the number of shares outstanding as of the close of business on the immediately preceding December 31 and (ii) the number of shares determined by the Company's board of directors. The number of shares authorized for issuance under the Incentive Plan increased by 5% of outstanding shares as described in the foregoing on January 1, 2022 and January 1, 2023. The number of shares authorized for issuance under the Incentive Plan did not increase on January 1, 2024.

For the three months ended March 31, 2024, and 2023, the Company granted 4,270,924 and 3,011,148 RSUs, respectively, and recognized $4.3 million and $2.9 million, respectively, of stock-based compensation expenses in relation to the Incentive Plan. For the three months ended March 31, 2024, and 2023, 96,144 and 5,700 RSUs were forfeited, respectively.

Employee Stock Purchase Plan

On December 9, 2021, we adopted the 2021 Employee Stock Purchase Plan ("ESPP"), which provides a means by which eligible employees may be given an opportunity to purchase shares of the Company’s Class A common stock. As of March 31, 2024, and December 31, 2023, there were 4,662,020 shares of the Company's Class A common stock authorized for issuance under the ESPP. The number of shares authorized for issuance under the ESPP will increase on January 1 of each year from 2024 to 2031 by the lesser of (i) 1% of the number of shares outstanding as of the close of business on the immediately preceding December 31 and (ii) the number of shares determined by the Company's board of directors. No shares of the Company’s Class A common stock were issued and no stock-based compensation expense was recognized in relation to the ESPP for the three months ended March 31, 2024, and 2023. The number of shares authorized for issuance under the ESPP increased by 1% of outstanding shares as described in the foregoing on January 1, 2022 and January 1, 2023. The number of shares authorized for issuance under the ESPP did not increase on January 1, 2024.

15.Income Taxes

The income tax provision for interim periods is determined using an estimate of the Company’s annual effective tax rate as adjusted for discrete items arising in that quarter.

For the three months ended March 31, 2024, and 2023, the Company had income tax expense of $4.9 million and income tax expense of $0.9 million, respectively. For the three months ended March 31, 2024, the effective tax rate differs from the U.S. statutory rate primarily due to effects of non-deductible compensation, noncontrolling interests, redeemable noncontrolling interests, fair value adjustments for Alignment Shares, as well as state and local income taxes. For the three months ended March 31, 2023, the effective tax rate differs from the U.S. statutory rate primarily due to effects of non-deductible compensation, noncontrolling interests, redeemable noncontrolling interests, fair value adjustments for Alignment Shares, as well as state and local income taxes.

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Table of Contents

Altus Power, Inc.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(Dollar amounts in thousands, except per share data, unless otherwise noted)

16.Subsequent Events

The Company has evaluated subsequent events from March 31, 2024, through May 9, 2024, which is the date the unaudited condensed consolidated financial statements were available to be issued. Other than the subsequent event disclosed below, there are no subsequent events requiring recording or disclosure in the condensed consolidated financial statements.

Resignation of Lars Norell as Co-Chief Executive Officer and Director

On April 26, 2024, Lars Norell resigned as Co-Chief Executive Officer and director of the Company. There were no disagreements between the Company and Mr. Norell that led to his decision to resign as Co-Chief Executive Officer and director. The board of directors has appointed Gregg Felton as sole Chief Executive Officer of the Company.

In connection with his resignation, Mr. Norell has signed a separation and release agreement (the “Agreement”), where he will receive severance, which includes (i) eighteen (18) months’ base salary, for an aggregate amount of approximately $0.9 million, payable as salary continuation in accordance with the Company’s normal pay schedule, (ii) subject to his timely election and continued eligibility for COBRA continuation coverage, a subsidized COBRA continuation coverage for 12 months, or if earlier, until he becomes eligible for medical benefits from a subsequent employer, (iii) a pro rata short-term incentive bonus for plan year 2024, to be paid in March 2025 at the same time that such bonuses are paid to current employees, and (iv) an additional payment of approximately $1.0 million, less applicable payroll deductions, paid in a lump sum on the eighth day after the execution of the Agreement.

Additionally, the 4,283,452 unvested RSUs and PSUs granted under the Omnibus Plan and held by Mr. Norell will be forfeited. This will result in the reversal of approximately $8.7 million of previously recognized stock-based compensation expense which will be recognized during the three months ended June 30, 2024.

******

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of financial condition and operating results for Altus Power, Inc. (as used in this section, “Altus Power” or the “Company”) has been prepared by Altus Power’s management. You should read the following discussion and analysis together with our condensed consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q, and our 2023 Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 14, 2024 (the "2023 Annual Report on Form 10-K"). Any references in this section to “we,” “our” or “us” shall mean Altus Power. In addition to historical information, this Quarterly Report on Form 10-Q for the period ended March 31, 2024 (this “Report”), including this management’s discussion and analysis (“MD&A”), contains statements that are considered "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These statements do not convey historical information but relate to predicted or potential future events and financial results, such as statements of our plans, strategies and intentions, or our future performance or goals that are based upon management's current expectations. Our forward-looking statements can often be identified by the use of forward-looking terminology such as "believes," "expects," “intends,” "may," “could,” "will," "should," "plans," “projects,” “forecasts,” “seeks,” “anticipates,” “goal,” “objective,” “target,” “estimate,” “future,” “outlook,” “vision,” or variations of such words or similar terminology. Investors and prospective investors are cautioned that such forward-looking statements are only projections based on current estimations. These statements involve risks and uncertainties and are based upon various assumptions. Such risks and uncertainties include, but are not limited to the risks as described in the "Risk Factors" in our 2023 Annual Report on Form 10-K. These risks and uncertainties, among others, could cause our actual future results to differ materially from those described in our forward-looking statements or from our prior results. Any forward-looking statement made by us in this Report is based only on information currently available to us and speaks to circumstances only as of the date on which it is made. Except as required by applicable law, we are not obligated to update these forward-looking statements, even though our situation may change in the future.

Such forward-looking statements are subject to known and unknown risks, uncertainties, assumptions and other important factors, many of which are outside Altus Power’s control, that could cause actual results to differ materially from the results discussed in the forward-looking statements. These risks, uncertainties, assumptions and other important factors include, but are not limited to: (1) the risk that pending acquisitions may not close in the anticipated timeframe or at all due to a closing condition not being met; (2) failure to obtain required consents or regulatory approvals in a timely manner or otherwise; (3) the ability of Altus Power to successfully integrate the acquisition of solar assets into its business and generate profit from their operations; (4) the ability of Altus Power to retain customers and maintain and expand relationships with business partners, suppliers and customers; (5) the risk of litigation and/or regulatory actions related to the proposed acquisition of solar assets; and (6) the possibility that Altus Power may be adversely affected by other economic, business, regulatory, credit risk and/or competitive factors.

Overview

We are a developer, owner and operator of large-scale roof, ground and carport-based photovoltaic ("PV") and energy storage systems, serving commercial and industrial, public sector and community solar customers. Our mission is to create a clean electrification ecosystem and drive the clean energy transition of our customers across the United States while simultaneously enabling the adoption of corporate environmental, social and governance ("ESG") targets. In order to achieve our mission, we develop, own and operate a network of solar generation and energy storage facilities. We believe we have the in-house expertise to develop, build and provide operations and maintenance and customer servicing for our assets. The strength of our platform is enabled by premier sponsorship from The Blackstone Group ("Blackstone"), which provides an efficient capital source and access to a network of portfolio companies, and CBRE Group, Inc. ("CBRE"), which provides direct access to its portfolio of owned and managed commercial and industrial (“C&I”) properties.

We own systems across the United States from Hawaii to Maine. Our portfolio currently consists of 981 megawatts (“MW”) of solar PV. We have long-term power purchase agreements ("PPAs") with over 450 enterprise entities and contracts with over 24,000 residential customers which are serviced by over 290 MW of community solar projects currently in operation. Our community solar projects are currently serving customers in 8 states. We also participate in numerous renewable energy credit (“REC”) programs throughout the country. We have experienced significant growth in the last fiscal year as a product of organic growth and targeted acquisitions and operate in 25 states, providing clean electricity to our customers equal to the electricity consumption of over 100,000 homes, displacing over 550,000 tons of CO2 emissions per annum.

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Key Factors Affecting Our Performance

Our results of operations and our ability to grow our business over time could be impacted by a number of factors and trends that affect our industry generally, as well as new offerings of services and products we may acquire or seek to acquire in the future. Additionally, our business is concentrated in certain markets, putting us at risk of region-specific disruptions such as adverse economic, regulatory, political, weather and other conditions. See “Risk Factors” in our 2023 Annual Report on Form 10-K for further discussion of risks affecting our business. We believe the factors discussed below are key to our success:

Competition

We compete in the C&I scale renewable energy space with utilities, developers, independent power producers, pension funds and private equity funds for new investment opportunities. We expect to grow our market share because of the following competitive strengths:

•Development Capability: We have established an innovative approach to the development process. From site identification and customer origination through the construction phase, we’ve established a streamlined process enabling us to further create the scalability of our platform and significantly reduce the costs and time in the development process. Part of our attractiveness to our customers is our ability to ensure a high level of execution certainty. We anticipate that this ability to originate, source, develop and finance projects will ensure we can continue to grow and meet the needs of our customers.

•Long-term Revenue Contracts: Our C&I solar generation contracts have a typical length of 20 years or longer, creating long-term relationships with customers that allow us to cross-sell additional current and future products and services. The average remaining life of our current contracts is approximately 15 years. These long-term contracts are either structured at a fixed rate, often with an escalator, or floating rate pegged at a discount to the prevailing local utility rates. We refer to these latter contracts as variable rate, and as of March 31, 2024, these variable rate contracts make up approximately 54% of our current installed portfolio. Contracts with a fixed rate and a fixed rate with an escalator make up approximately 28% and 18% of our current installed portfolio, respectively. During the three months ended March 31, 2024, overall utility rates generally increased in states where we have projects under variable rate contracts, but there can be no guarantee that they will continue to do so. The realization of solar power price increases varies depending on region, utility and terms of revenue contract, but generally, we would benefit from such increases in the future as inflationary pressures persist.

•Flexible Financing Solutions: We have a market-leading cost of capital in an investment-grade rated scalable credit facility from Blackstone, which enables us to be competitive bidders in asset acquisition and development. In addition to our Blackstone term loan, we also have financing available through a revolving credit facility which has $200 million of committed capacity with 5-year maturity and interest of SOFR plus spread between 160 - 260 basis points on drawn balances, a construction facility which has $200 million of committed capacity with a 5-year maturity and interest of SOFR plus 350 basis points on drawn balances, and a term loan which has $100 million of additional committed capacity with a 6-year maturity and an initial fixed interest rate of 8.50%, subject to adjustments.

•Leadership: We have a strong executive leadership team who has extensive experience in capital markets, solar development and solar construction, with over 20 years of experience each. Moreover, through the transaction structure, management and employees will continue to own a significant interest in the Company. As described in our Current Report on Form 8-K, filed with the Securities and Exchange Commission on April 29, 2024, we announced the resignation of Lars R. Norell as our Co-Chief Executive Officer and the appointment of Gregg Felton as our sole Chief Executive Officer.

•CBRE Partnership: Our partnership with CBRE, the largest global real estate services company, provides us with a clear path to creating new customer relationships. 90% of the Fortune 100 are CBRE clients, providing a significant opportunity for us to expand our customer base.

Seasonality

The amount of electricity our solar energy systems produce is dependent in part on the amount of sunlight, or irradiation, where the assets are located. Because shorter daylight hours in winter months and poor weather conditions due to rain or snow results in less irradiation, the output of solar energy systems will vary depending on the season and the overall weather conditions in a year. While we expect seasonal variability to occur, the geographic diversity in our assets helps to mitigate our aggregate seasonal variability.

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Another aspect of seasonality relates to our construction program, which is more productive during warmer weather months and generally results in project completion during fourth quarter. This is particularly relevant for our projects under construction in colder climates like the Northeast.

Pipeline

Our pipeline, comprised of a mix of operating assets and new build assets, is being evaluated by our team each quarter. As of March 31, 2024, this pipeline includes 14 MW of assets in construction and pre-construction in Maryland with CBRE Investment Management and additional potential new build assets in Illinois which we are in discussions with various CBRE customers about. Additionally, we are evaluating 100 MW to 150 MW of operating asset acquisition opportunities.

Key Financial and Operational Metrics

We regularly review a number of metrics, including the following key operational and financial metrics, to evaluate our business, measure our performance and liquidity, identify trends affecting our business, formulate our financial projections and make strategic decisions.

Megawatts Installed

Megawatts installed represents the aggregate megawatt nameplate capacity of solar energy systems for which panels, inverters, and mounting and racking hardware have been installed on premises in the period.

	As of March 31,		Change
	2024	2023	MW	%
Megawatts installed	981	678	303	45	%

Cumulative megawatts installed increased from 678 MW as of March 31, 2023, to 981 MW as of March 31, 2024, a 45% increase.

	As of March 31, 2024	As of December 31, 2023	Change
			MW	%
Megawatts installed	981	896	85	9	%

Cumulative megawatts installed increased from 896 MW as December 31, 2023, to 981 MW as of March 31, 2024, a 9% increase.

The following table provides an overview of megawatts installed by state as of March 31, 2024:

State	Megawatts installed	Share, percentage
New York	205	20.9%
New Jersey	177	18.0%
Massachusetts	150	15.3%
California	120	12.2%
North Carolina	67	6.8%
Minnesota	60	6.1%
South Carolina	42	4.2%
Hawaii	34	3.5%
Nevada	21	2.2%
All other	105	10.8%
Total	981	100.0%

Megawatt Hours Generated

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Megawatt hours (“MWh”) generated represents the output of solar energy systems from operating solar energy systems. MWh generated relative to nameplate capacity can vary depending on multiple factors such as design, equipment, location, weather and overall system performance.

	Three months ended March 31,		Change
	2024	2023	MWh	%
Megawatt hours generated	210,000	137,000	73,000	53	%

Megawatt hours generated increased from 137,000 MWh for the three months ended March 31, 2023, to 210,000 MWh for the three months ended March 31, 2024, a 53% increase.

Non-U.S. GAAP Financial Measures

Adjusted EBITDA

We define adjusted EBITDA as net income plus net interest expense, depreciation, amortization and accretion expense, income tax expense or benefit, acquisition and entity formation costs, stock-based compensation expense, and excluding the effect of certain non-recurring items we do not consider to be indicative of our ongoing operating performance such as, but not limited to, gain or loss on fair value remeasurement of contingent consideration, gain or loss on disposal of property, plant and equipment, change in fair value of Alignment Shares liability, loss on extinguishment of debt, net, and other miscellaneous items of other income and expenses.

We define adjusted EBITDA margin as adjusted EBITDA divided by operating revenues.

Adjusted EBITDA and adjusted EBITDA margin are non-U.S. GAAP financial measures that we use to measure our performance. We believe that investors and analysts also use adjusted EBITDA and adjusted EBITDA margin in evaluating our operating performance. These measurements are not recognized in accordance with U.S. GAAP and should not be viewed as an alternative to U.S. GAAP measures of performance. The U.S. GAAP measure most directly comparable to adjusted EBITDA is net income and to adjusted EBITDA margin is net income over operating revenues. The presentation of adjusted EBITDA and adjusted EBITDA margin should not be construed to suggest that our future results will be unaffected by non-cash or non-recurring items. In addition, our calculation of adjusted EBITDA and adjusted EBITDA margin are not necessarily comparable to adjusted EBITDA and adjusted EBITDA margin as calculated by other companies and investors and analysts should read carefully the components of our calculations of these non-U.S. GAAP financial measures.

We believe adjusted EBITDA is useful to management, investors and analysts in providing a measure of core financial performance adjusted to allow for comparisons of results of operations across reporting periods on a consistent basis. Factors in this determination include the exclusion of (1) variability due to gains or losses related to fair value remeasurement of contingent consideration and the change in fair value of Alignment Shares liability, (2) strategic decisions to acquire businesses, dispose of property, plant and equipment or extinguish debt, and (3) the non-recurring nature of stock-based compensation and other miscellaneous items of income and expense, which affect results in a given period or periods. In addition, adjusted EBITDA represents the business performance of the Company before the application of statutory income tax rates and tax adjustments corresponding to the various jurisdictions in which the Company operates, as well as interest expense and depreciation, amortization and accretion expense, which are not representative of our ongoing operating performance.

Adjusted EBITDA is also used by our management for internal planning purposes, including our consolidated operating budget, and by our board of directors in setting performance-based compensation targets. Adjusted EBITDA should not be considered an alternative to but viewed in conjunction with U.S. GAAP results, as we believe it provides a more complete understanding of ongoing business performance and trends than U.S. GAAP measures alone. Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation or as a substitute for analysis of our results as reported under U.S. GAAP.

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	Three Months Ended March 31,
	2024		2023
	(in thousands)
Reconciliation of Net income to Adjusted EBITDA:
Net income	$	4,055	$	3,845
Income tax expense	4,896		888
Interest expense, net	16,193		12,446
Depreciation, amortization and accretion expense	16,130		11,376
Stock-based compensation	4,304		2,872
Acquisition and entity formation costs	1,066		1,491
(Gain) loss on fair value remeasurement of contingent consideration, net	(79)		50
Gain on disposal of property, plant and equipment	(88)		—
Change in fair value of Alignment Shares liability	(26,077)		(17,018)
Other (income) expense, net	(683)		90
Adjusted EBITDA	$	19,717	$	16,040

	Three Months Ended March 31,
	2024			2023
	(in thousands)
Reconciliation of Adjusted EBITDA margin:
Adjusted EBITDA	$	19,717		$	16,040
Operating revenues, net	40,659			29,378
Adjusted EBITDA margin	48		%	55		%

Components of Results of Operations

The Company derives its operating revenues principally from power purchase agreements, net metering credit agreements, solar renewable energy credits, and performance based incentives.

Power sales under PPAs. A portion of the Company’s power sales revenues is earned through the sale of energy (based on kilowatt hours) pursuant to the terms of PPAs. The PPAs typically have fixed or floating rates and are generally invoiced monthly. The Company applied the practical expedient allowing the Company to recognize revenue in the amount that the Company has a right to invoice which is equal to the volume of energy delivered multiplied by the applicable contract rate. As of March 31, 2024, PPAs have a weighted average remaining life of 11 years.

Power sales under net metering credit agreements. A portion of the Company’s power sales revenues are obtained through the sale of net metering credits under net metering credit agreements (“NMCAs”). Net metering credits are awarded to the Company by the local utility based on kilowatt hour generation by solar energy facilities, and the amount of each credit is determined by the utility’s applicable tariff. The Company currently receives net metering credits from various utilities including Eversource Energy, National Grid Plc, and Xcel Energy. There are no direct costs associated with net metering credits, and therefore, they do not receive an allocation of costs upon generation. Once awarded, these credits are then sold to third party offtakers pursuant to the terms of the offtaker agreements. The Company views each net metering credit in these arrangements as a distinct performance obligation satisfied at a point in time. Generally, the customer obtains control of net metering credits at the point in time when the utility assigns the generated credits to the Company account, who directs the utility to allocate to the customer based upon a schedule. The transfer of credits by the Company to the customer can be up to one month after the underlying power is generated. As a result, revenue related to NMCA is recognized upon delivery of net metering credits by the Company to the customer. As of March 31, 2024, NMCAs have a weighted average remaining life of 19 years.

SREC revenue. The Company applies for and receives SRECs in certain jurisdictions for power generated by solar energy systems it owns. The quantity of SRECs is based on the amount of energy produced by the Company’s qualifying generation facilities. SRECs are sold pursuant to agreements with third parties, who typically require SRECs to comply with

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state-imposed renewable portfolio standards. Holders of SRECs may benefit from registering the credits in their name to comply with these state-imposed requirements, or from selling SRECs to a party that requires additional SRECs to meet its compliance obligations. The Company receives SRECs from various state regulators including New Jersey Board of Public Utilities, Massachusetts Department of Energy Resources, and Maryland Public Service Commission. There are no direct costs associated with SRECs and therefore, they do not receive an allocation of costs upon generation. The majority of individual SREC sales reflect a fixed quantity and fixed price structure over a specified term. The Company typically sells SRECs to different customers from those purchasing the energy under PPAs. The Company believes the sale of each SREC is a distinct performance obligation satisfied at a point in time and that the performance obligation related to each SREC is satisfied when each SREC is delivered to the customer.

Power sales on wholesale markets. A portion of the Company’s power sales revenues is earned through the sale of energy (based on kilowatt hours) on the wholesale market operated by PJM Interconnection at floating spot prices. The promise to sell energy on a wholesale market is a separate distinct performance obligation and revenue is recognized as energy is delivered at the interconnection point.

Rental income. Rental income is primarily derived from the master lease agreement with Vitol (as described in Note 5, "Acquisitions," to our condensed consolidated financial statements included elsewhere in this Report) as well as long-term PPAs accounted for as operating leases under ASC 842. The Company's leases include various renewal options which are included in the lease term when the Company has determined it is reasonably certain of exercising the options based on consideration of all relevant factors that create an economic incentive for the Company as lessor. Certain leases include variable lease payments associated with production of solar facilities, which are recognized as rental income in period the energy is delivered.

Performance based incentives. Many state governments, utilities, municipal utilities and co-operative utilities offer a rebate or other cash incentive for the installation and operation of a renewable energy facility. Up-front rebates provide funds based on the cost, size or expected production of a renewable energy facility. Performance based incentives provide cash payments to a system owner based on the energy generated by its renewable energy facility during a pre-determined period, and they are paid over that time period. The Company recognizes revenue from state and utility incentives at the point in time in which they are earned.

In 2023, performance based incentives are primarily represented by cash awards granted to the Company by the New York State Energy Research & Development Authority ("NYSERDA") for the development of distributed solar facilities in the State of New York.

Revenue recognized on contract liabilities. The Company recognizes contract liabilities related to long-term agreements to sell SRECs that are prepaid by customers before SRECs are delivered. The Company will recognize revenue associated with the contract liabilities as SRECs are delivered to customers through 2037.

Cost of operations (exclusive of depreciation and amortization). Cost of operations primarily consists of operations and maintenance expense, site lease expense, insurance premiums, property taxes and other miscellaneous costs associated with the operations of solar energy facilities. Altus Power expects its cost of operations to continue to grow in conjunction with its business growth. These costs as a percentage of revenue will decrease over time, offsetting efficiencies and economies of scale with inflationary increases of certain costs.

General and administrative. General and administrative expense consists primarily of salaries, bonuses, benefits and all other employee-related costs, including stock-based compensation, professional fees related to legal, accounting, human resources, finance and training, information technology and software services, marketing and communications, travel, rent, and other office-related expenses.

Altus Power expects increased general and administrative expenses as it continues to grow its business but to decrease over time as a percentage of revenue. Altus Power also expects to incur additional expenses as a result of operating as a public company, including expenses necessary to comply with the rules and regulations applicable to companies listed on a national securities exchange and related to compliance and reporting obligations pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Further, Altus Power expects to incur higher expenses for investor relations, accounting advisory, directors' and officers’ insurance, and other professional services.

Depreciation, amortization and accretion expense. Depreciation expense represents depreciation on solar energy systems that have been placed in service. Depreciation expense is computed using the straight-line composite method over the estimated useful lives of assets. Leasehold improvements are depreciated over the shorter of the estimated useful lives or the remaining term of the lease. Amortization includes third party costs necessary to acquire PPA and NMCA customers, value

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ascribed to in-place leases, and favorable and unfavorable rate revenues contracts. Value ascribed to in-place leases is amortized using the straight-line method ratably over the term of the individual site leases. Third party costs necessary to acquire PPAs and NMCA customers are amortized using the straight-line method ratably over 15-25 years based upon the term of the customer contract. Estimated fair value allocated to the favorable and unfavorable rate PPAs and REC agreements are amortized using the straight-line method over the remaining non-cancelable terms of the respective agreements. Accretion expense includes over time increase of asset retirement obligations associated with solar energy facilities.

Acquisition and entity formation costs. Acquisition and entity formation costs represent costs incurred to acquire businesses and form new legal entities. Such costs primarily consist of professional fees for banking, legal, accounting and appraisal services.

Fair value remeasurement of contingent consideration. In connection with various acquisitions, contingent consideration may be payable upon achieving certain conditions. The Company estimates the fair value of contingent consideration using a Monte Carlo simulation model or an expected cash flow approach. Significant assumptions used in the measurement of fair value of contingent consideration associated with various acquisitions include market power rates, estimated volumes of power generation of acquired solar energy facilities, percentage of completion of in-development solar energy facilities, and the risk-adjusted discount rate associated with the business.

Gain or loss on disposal of property, plant and equipment. In connection with the disposal of assets, the Company recognizes a gain or loss on disposal of property, plant and equipment, which represents the difference between the consideration received and the carrying value of the disposed asset.

Stock-based compensation. Stock-based compensation expense is recognized for awards granted under the Legacy Incentive Plans and Omnibus Incentive Plan, as defined in Note 14, "Stock-Based Compensation," to our condensed consolidated financial statements included elsewhere in this Report.

Change in fair value of Alignment Shares liability. Alignment Shares represent Class B common stock of the Company which were issued in connection with the Merger. Class B common stock, par value $0.0001 per share ("Alignment Shares") are accounted for as liability-classified derivatives, which were remeasured as of March 31, 2024, and the resulting gain was included in the condensed consolidated statements of operations. The Company estimates the fair value of outstanding Alignment Shares using a Monte Carlo simulation valuation model utilizing a distribution of potential outcomes based on a set of underlying assumptions such as stock price, volatility, and risk-free interest rates.

Other expense and income, net. Other income and expenses primarily represent interest income, and other miscellaneous items.

Interest expense, net. Interest expense, net represents interest on our borrowings under our various debt facilities, amortization of debt discounts and deferred financing costs, and unrealized gains and losses on interest rate swaps.

Income tax expense and benefit. We account for income taxes under ASC 740, Income Taxes. As such, we determine deferred tax assets and liabilities based on temporary differences resulting from the different treatment of items for tax and financial reporting purposes. We measure deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. Additionally, we must assess the likelihood that deferred tax assets will be recovered as deductions from future taxable income. We have a partial valuation allowance on our deferred state tax assets because we believe it is more likely than not that a portion of our deferred state tax assets will not be realized. We evaluate the recoverability of our deferred tax assets on an annual basis.

Net income and loss attributable to noncontrolling interests and redeemable noncontrolling interests. Net income and loss attributable to noncontrolling interests and redeemable noncontrolling interests represents third-party interests in the net income or loss of certain consolidated subsidiaries based on Hypothetical Liquidation at Book Value.

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Results of Operations – Three Months Ended March 31, 2024, Compared to Three Months Ended March 31, 2023 (Unaudited)

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Operating revenues, net	$	40,659	$	29,378	$	11,281	38.4	%
Operating expenses
Cost of operations (exclusive of depreciation and amortization shown separately below)	10,920		5,976		4,944		82.7	%
General and administrative	10,022		7,362		2,660		36.1	%
Depreciation, amortization and accretion expense	16,130		11,376		4,754		41.8	%
Acquisition and entity formation costs	1,066		1,491		(425)		(28.5)	%
(Gain) loss on fair value remeasurement of contingent consideration, net	(79)		50		(129)		(258.0)	%
Gain on disposal of property, plant and equipment	(88)		—		(88)		100.0	%
Stock-based compensation	4,304		2,872		1,432		49.9	%
Total operating expenses	$	42,275	$	29,127	$	13,148	45.1	%
Operating (loss) income	(1,616)		251		(1,867)		*
Other (income) expense
Change in fair value of Alignment Shares liability	(26,077)		(17,018)		(9,059)		53.2	%
Other (income) expense, net	(683)		90		(773)		*
Interest expense, net	16,193		12,446		3,747		30.1	%
Total other income, net	$	(10,567)	$	(4,482)	$	(6,085)	135.8	%
Income before income tax expense	$	8,951	$	4,733	$	4,218	89.1	%
Income tax expense	(4,896)		(888)		(4,008)		*
Net income	$	4,055	$	3,845	$	210	5.5	%
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(3,454)		(1,772)		(1,682)		94.9	%
Net income attributable to Altus Power, Inc.	$	7,509	$	5,617	$	1,892	33.7	%
Net income per share attributable to common stockholders
Basic	$	0.05	$	0.04	$	0.01	25.0	%
Diluted	$	0.05	$	0.03	$	0.02	66.7	%
Weighted average shares used to compute net income per share attributable to common stockholders
Basic	159,025,740		158,621,674		404,066		0.3	%
Diluted	162,242,148		161,003,402		1,238,746		0.8	%

* Percentage is not meaningful

42

Operating revenues, net

	Three Months Ended March 31,				Change
	2024		2023		Change		%
	(in thousands)
Power sales under PPAs	$	12,625	$	8,986	$	3,639	40.5	%
Power sales under NMCAs	9,977		6,836		3,141		45.9	%
Power sales on wholesale markets	295		356		(61)		(17.1)	%
Total revenue from power sales	22,897		16,178		6,719		41.5	%
Solar renewable energy credit revenue	9,936		10,067		(131)		(1.3)	%
Rental income	2,085		626		1,459		233.1	%
Performance based incentives	4,807		2,098		2,709		129.1	%
Revenue recognized on contract liabilities	914		409		505		123.5	%
Other	20		—		20		100.0	%
Total operating revenues, net	$	40,659	$	29,378	$	11,281	38.4	%

Operating revenues, net increased by $11.3 million, or 38.4%, for the three months ended March 31, 2024, compared to the three months ended March 31, 2023, primarily due to the increased number of operating solar energy facilities in our portfolio.

Cost of operations

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Cost of operations (exclusive of depreciation and amortization shown separately below)	$	10,920	$	5,976	$	4,944	82.7	%

Cost of operations increased by $4.9 million, or 82.7%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to the increased number of operating solar energy facilities in our portfolio.

General and administrative

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
General and administrative	$	10,022	$	7,362	$	2,660	36.1	%

General and administrative expense increased by $2.7 million, or 36.1%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to increase in general personnel costs resulting from increased headcount in multiple job functions.

Depreciation, amortization and accretion expense

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Depreciation, amortization and accretion expense	$	16,130	$	11,376	$	4,754	41.8	%

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Depreciation, amortization and accretion expense increased by $4.8 million, or 41.8%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to the increased number of operating solar energy facilities in our portfolio.

Acquisition and entity formation costs

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Acquisition and entity formation costs	$	1,066	$	1,491	$	(425)	(28.5)	%

Acquisition and entity formation costs decreased by 28.5% during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to costs associated with the True Green II Acquisition (as defined in Note 7, "Fair Value Measurements" to our condensed consolidated financial statements included elsewhere in this Report) completed on February 15, 2023.

(Gain) loss on fair value remeasurement of contingent consideration

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
(Gain) loss on fair value remeasurement of contingent consideration	$	(79)	$	50	$	(129)	(258.0)	%

Gain or loss on fair value remeasurement of contingent consideration is primarily associated with the True Green II Acquisition, the Caldera Acquisition, and the Solar Acquisition (as defined in our condensed consolidated financial statements included elsewhere in this Report). A gain or loss on fair value remeasurement was recorded for the three months ended March 31, 2024 and 2023, due to changes in the values of significant assumptions used in the measurement of fair value.

Gain on disposal of property, plant and equipment

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Gain on disposal of property, plant and equipment	$	(88)	$	—	$	(88)	100.0	%

Gain on disposal of property, plant and equipment is associated with the disposal of a solar facility that occurred during the three months ended March 31, 2024. The gain was calculated as the difference excess of consideration received over the carrying value of the disposed asset.

Stock-based compensation

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Stock-based compensation	$	4,304	$	2,872	$	1,432	49.9	%

Stock-based compensation expense increased by $1.4 million, or 49.9%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to restricted stock units granted under the Omnibus Incentive Plan (as defined in Note 14, "Stock-Based Compensation," to our condensed consolidated financial statements included elsewhere in this Report).

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Change in fair value of Alignment Shares liability

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Change in fair value of Alignment Shares liability	$	(26,077)	$	(17,018)	$	(9,059)	53.2	%

In connection with the Merger, the Company assumed a liability related to Alignment Shares, which was remeasured as of March 31, 2024 and 2023, and the resulting gain was included in the condensed consolidated statement of operations. The gain was primarily driven by the decrease in the Company's stock price during each period.

Other (income) expense, net

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Other (income) expense, net	$	(683)	$	90	$	(773)	*

* Percentage is not meaningful

Other income was $0.7 million during the three months ended March 31, 2024, as compared to other expense of $0.1 million during the three months ended March 31, 2023, primarily due to interest income during three months ended March 31, 2024, as well as miscellaneous other income and expense items during each period.

Interest expense, net

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Interest expense, net	$	16,193	$	12,446	$	3,747	30.1	%

Interest expense increased by $3.7 million, or 30.1%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to the increase of outstanding debt held by the Company. The increase was partially offset by $2.1 million of unrealized gain on interest rate swaps during the three months ended March 31, 2024.

Income tax expense

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Income tax expense	$	(4,896)	$	(888)	$	(4,008)	*

* Percentage is not meaningful

For the three months ended March 31, 2024, the Company recorded an income tax expense of $4.9 million in relation to pretax income of $9.0 million, which resulted in an effective income tax rate of 54.7%. The effective income tax rate was primarily impacted by fair value remeasurement of Alignment Shares, nondeductible compensation, net losses attributable to noncontrolling interests and redeemable noncontrolling interests, and state income taxes.

For the three months ended March 31, 2023, the Company recorded an income tax expense of $0.9 million in relation to a pretax income of $4.7 million, which resulted in an effective income tax rate of 18.8%. The effective income tax rate was primarily impacted by fair value remeasurement of Alignment Shares, nondeductible compensation, and state income taxes.

Related to the fair value remeasurement, the Company has issued Alignment Shares. These awards are liability classified awards for U.S. GAAP, and, as such, they are required to be remeasured to fair value each reporting period with the change in

45

value included in operating income. The Alignment Shares are considered equity awards for U.S. tax purposes. Therefore, the change in U.S. GAAP value does not result in taxable income or deduction. The U.S. GAAP change in fair value results in a permanent tax difference which impacts the Company’s estimated annual effective tax rate.

Net loss attributable to redeemable noncontrolling interests and noncontrolling interests

	Three Months Ended March 31,				Change
	2024		2023		$		%
	(in thousands)
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	$	(3,454)	$	(1,772)	$	(1,682)	94.9	%

Net loss attributable to redeemable noncontrolling interests and noncontrolling interests increased by $1.7 million, or 94.9%, during the three months ended March 31, 2024, as compared to the three months ended March 31, 2023, primarily due to changes in funding provided by tax equity investors and acquisitions of tax equity partnerships with non-controlling interests. Overall loss was partially offset by loss allocations due to reduced recapture periods for investment tax credits.

46

Liquidity and Capital Resources

As of March 31, 2024, the Company had total cash and restricted cash of $203.5 million. For a discussion of our restricted cash, see Note 2, “Significant Accounting Policies, Cash, Cash Equivalents, and Restricted Cash,” to our condensed consolidated financial statements.

We seek to maintain diversified and cost-effective funding sources to finance and maintain our operations, fund capital expenditures, including customer acquisitions, and satisfy obligations arising from our indebtedness. Historically, our primary sources of liquidity included proceeds from the issuance of redeemable preferred stock, borrowings under our debt facilities, third party tax equity investors and cash from operations. Our business model requires substantial outside financing arrangements to grow the business and facilitate the deployment of additional solar energy facilities. We will seek to raise additional required capital from borrowings under our existing debt facilities, third party tax equity investors, and cash from operations.

The solar energy systems that are in service are expected to generate a positive return rate over the useful life, typically 32 years. After solar energy systems commence operations, they typically do not require significant additional capital expenditures to maintain operating performance. However, in order to grow, we are currently dependent on financing from outside parties. The Company expects to have sufficient cash and cash flows from operations to meet working capital, debt service obligations, contingencies and anticipated required capital expenditures for at least the next 12 months. However, we are subject to business and operational risks that could adversely affect our ability to raise additional financing. If financing is not available to us on acceptable terms if and when needed, we may be unable to finance installation of our new customers’ solar energy systems in a manner consistent with our past performance, our cost of capital could increase, or we may be required to significantly reduce the scope of our operations, any of which would have a material adverse effect on our business, financial condition, results of operations and prospects. In addition, our tax equity funds and debt instruments impose restrictions on our ability to draw on financing commitments. If we are unable to satisfy such conditions, we may incur penalties for non-performance under certain tax equity funds, experience installation delays, or be unable to make installations in accordance with our plans or at all. Any of these factors could also impact customer satisfaction, our business, operating results, prospects and financial condition.

Contractual Obligations and Commitments

We enter into service agreements in the normal course of business. These contracts do not contain any minimum purchase commitments. Certain agreements provide for termination rights subject to termination fees or wind down costs. Under such agreements, we are contractually obligated to make certain payments to vendors, mainly, to reimburse them for their unrecoverable outlays incurred prior to cancellation. The exact amounts of such obligations are dependent on the timing of termination, and the exact terms of the relevant agreement and cannot be reasonably estimated. As of March 31, 2024, we do not expect to cancel these agreements.

The Company has operating leases for land and building rooftops and has contractual commitments to make payments in accordance with site lease agreements.

Off-Balance Sheet Arrangements

The Company enters into letters of credit and surety bond arrangements with lenders, local municipalities, government agencies, and land lessors. These arrangements relate to certain performance-related obligations and serve as security under the applicable agreements. As of March 31, 2024 and December 31, 2023, the Company had outstanding letters of credit and surety bonds totaling $58.2 million and $60.1 million, respectively. Our outstanding letters of credit are primarily used to fund the debt service reserve accounts associated with our term loans. We believe the Company will fulfill the obligations under the related arrangements and do not anticipate any material losses under these letters of credit or surety bonds.

ATM Program

On April 6, 2023, the Company entered into a Controlled Equity Offering Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”), Nomura Securities International, Inc. (“Nomura”) and Truist Securities, Inc. (“Truist” and, together with Cantor and Nomura, the “Agents,” and each, an “Agent”). The Sales Agreement provides for the offer and sale of our Class A common stock from time to time through an “at the market offering” (“ATM”) program under which the Agents act as sales agent or principal, subject to certain limitations, including the maximum aggregate dollar amount registered pursuant to the applicable prospectus supplement. Pursuant to the prospectus supplement filed by the Company on dated April 6, 2023, the Company may offer and sell up to $200 million of shares of Class A common stock pursuant to the Sales Agreement. For the

47

three months ended March 31, 2024, no shares of common stock were sold through the ATM equity program. Any issuances under the ATM are subject to approval of the Board.

Debt

APAF Term Loan

On August 25, 2021, APA Finance, LLC (“APAF”), a wholly owned subsidiary of the Company, entered into a $503.0 million term loan facility with Blackstone Insurance Solutions ("BIS") through a consortium of lenders, which consists of investment grade-rated Class A and Class B notes (the “APAF Term Loan”). The APAF Term Loan has a weighted average 3.51% annual fixed rate and matures on February 29, 2056 (“Final Maturity Date”).

The APAF Term Loan amortizes at an initial rate of 2.5% of outstanding principal per annum for a period of 8 years at which point the amortization steps up to 4% per annum until September 30, 2031 (“Anticipated Repayment Date”). After the Anticipated Repayment Date, the loan becomes fully-amortizing, and all available cash is used to pay down principal until the Final Maturity Date. The APAF Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF Term Loan was $471.5 million less unamortized debt discount and loan issuance costs totaling $6.5 million. As of December 31, 2023, the outstanding principal balance of the APAF Term Loan was $474.6 million less unamortized debt discount and loan issuance costs totaling $6.7 million.

As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF Term Loan.

APAF II Term Loan

On December 23, 2022, APA Finance II, LLC (“APAF II”), a wholly owned subsidiary of the Company, entered into a $125.7 million term loan facility (the “APAF II Term Loan”) with KeyBank National Association ("KeyBank") and The Huntington Bank ("Huntington") as lenders. The proceeds of the APAF II Term Loan were used to repay the outstanding amounts under certain project-level loans. The APAF II Term Loan matures on December 23, 2027, and has a variable interest rate based on SOFR plus a spread of 1.475%. Simultaneously with entering into the APAF II Term Loan, the Company entered into interest rate swaps for 100% of the amount of debt outstanding, which effectively fixed the interest rate at 4.885% (see Note 7, "Fair Value Measurements," to our condensed consolidated financial statements included elsewhere in this Report for further details). The APAF II Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF II Term Loan was $111.8 million, less unamortized debt issuance costs of $2.0 million. As of December 31, 2023, the outstanding principal balance of the APAF II Term Loan was $112.8 million, less unamortized debt issuance costs of $2.2 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF II Term Loan.

APAF III Term Loan

On February 15, 2023, the Company, through its subsidiaries, APA Finance III Borrower, LLC (the “APAF III Borrower”) and APA Finance III Borrower Holdings, LLC (“Holdings”), entered into a new long-term funding facility under the terms of a credit agreement among the APAF III Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF III Term Loan”).

This funding facility provides for a term loan of $204.0 million at a fixed rate of 5.62%. The APAF III Term Loan amortizes at a rate of 2.5% of initial outstanding principal until the anticipated repayment date of June 30, 2033. The maturity date of the term loan is October 31, 2047. Upon lender approval, the APAF III Borrower has the right to increase the funding facility to make additional draws for certain solar generating facilities, as set forth in the credit agreement. On February 15, 2023, the Company borrowed $193.0 million from this facility to fund the True Green II Acquisition and the associated costs and expenses. The principal balance borrowed under the APAF III Term Loan was offset by $4.0 million of debt issuance costs and $6.3 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033. The APAF III Term Loan is secured by membership interests in the Company's subsidiaries.

On June 15, 2023 and July 21, 2023, the Company amended the APAF III Term Loan to add $47.0 million and $28.0 million of additional borrowings, respectively, the proceeds of which were used to repay outstanding term loans under the

48

Construction to Term Loan Facility (as defined below), and to provide long-term financing for new solar projects. The principal balance borrowed under the amendments was offset by $0.3 million and $0.2 million of issuance costs, respectively, and $1.5 million and $1.1 million of issuance discount, respectively, which have been deferred and will be recognized as interest expense through June 30, 2033.

On December 20, 2023, the Company amended the APAF III Term Loan to add $163.0 million of additional borrowings, the proceeds of which were used to fund the Caldera Acquisition. The amendment increased the weighted average fixed interest rate for all borrowings under the APAF III Term Loan to 6.03%, and increased the rate of amortization for the new borrowings under the amendment to 3.25% per annum until June 30, 2033. The principal balance borrowed under the amendment was offset by $1.3 million of issuance costs and $0.8 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033.

As of March 31, 2024, the outstanding principal balance of the APAF III Term Loan was $423.6 million, less unamortized debt issuance costs and discount of $14.0 million. As of December 31, 2023, the outstanding principal balance of the APAF III Term Loan was $426.6 million, less unamortized debt issuance costs and discount of $14.3 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

APAF IV Term Loan

On March 26, 2024, the Company, through its subsidiaries, APA Finance IV, LLC (the “APAF IV Borrower”), and APA Finance IV Holdings, LLC (“Holdings”) has entered into a new term loan facility under the terms of a credit agreement among the APAF IV Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF IV Term Loan”).

The APAF IV Term Loan, which matures on March 26, 2049, bears interest at a fixed rate of 6.45% per annum on outstanding principal amounts under the term loan. The Term Loan Facility has an anticipated repayment date of June 30, 2034. Upon lender approval, the APAF IV Borrower has the right to increase the Term Loan Facility to make additional draws for certain acquisitions of solar assets that otherwise satisfy the criteria for permitted acquisitions, as defined in the credit agreement. On March 26, 2024, the Company borrowed $101.0 million under the APAF IV Term Loan in connection with the Vitol Acquisition, which closed on January 31, 2024. The principal balance borrowed under the APAF IV Term Loan was offset by $1.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through June 30, 2034. The APAF IV Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF IV Term Loan was $101.0 million, less unamortized debt issuance costs and discount of $1.6 million. As of March 31, 2024, the Company was in compliance with all covenants under the APAF IV Term Loan.

APAGH Term Loan

On December 27, 2023, APA Generation Holdings, LLC (“APAGH” or the “APAGH Borrower”), a wholly owned subsidiary of the Company, entered into a credit agreement (the “APAGH Term Loan”) with an affiliate of Goldman Sachs Asset Management and CPPIB Credit Investments III Inc., a subsidiary of Canada Pension Plan Investment Board, as "Lenders." The total commitment under the credit agreement is $100.0 million. The Company can also allow for the funding of additional incremental loans in an amount not to exceed $100.0 million over the term of the credit agreement at the discretion of the Lenders. Subject to certain exceptions, the APAGH Borrower’s obligations to the Lenders are secured by the assets of the APAGH Borrower, its parent, Altus Power, LLC (“Holdings”) and the Company and are further guaranteed by Holdings and the Company.

Interest accrues on any outstanding balance at an initial fixed rate equal to 8.50%, subject to adjustments. The maturity date of the term loan is December 27, 2029.

On December 27, 2023, the Company borrowed $100.0 million under the APAGH Term Loan to fund future growth needs, which was partially offset by $3.0 million of issuance discount. The Company incurred $1.0 million of debt issuance costs related to the APAGH Term Loan, which have been deferred and will be recognized as interest expense through December 27, 2029.

As of March 31, 2024, the outstanding principal balance of the APAGH Term Loan was $100.0 million, less unamortized debt issuance costs of $3.8 million. As of December 31, 2023, the outstanding principal balance of the APAGH Term Loan was

49

$100.0 million, less unamortized debt issuance costs and discount of $4.0 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

APAG Revolver

On December 19, 2022, APA Generation, LLC (“APAG”), a wholly owned subsidiary of the Company, entered into revolving credit facility with Citibank, N.A. with a total committed capacity of $200.0 million (the "APAG Revolver"). Outstanding amounts under the APAG Revolver have a variable interest rate based on a base rate and an applicable margin. The APAG Revolver is secured by membership interests in the Company's subsidiaries. The APAG Revolver matures on December 19, 2027. As of March 31, 2024, and December 31, 2023, there was $65.0 million outstanding under the APAG Revolver. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAG Revolver.

APACF II Facility

On November 10, 2023, APACF II, LLC (“APACF II” or the “APACF II Borrower”) a wholly-owned subsidiary of the Company, entered into a credit agreement among the APACF II Borrower, APACF II Holdings, LLC, Pass Equipment Co., LLC, each of the project companies from time to time party thereto, each of the tax equity holdcos from time to time party thereto, U.S. Bank Trust Company, National Association, U.S. Bank National Association, each lender from time to time party thereto (collectively, the “Lenders”) and Blackstone Asset Based Finance Advisors LP, as Blackstone representative (“APACF II Facility”).

The aggregate amount of the commitments under the credit agreement is $200.0 million. The APACF II Facility matures on November 10, 2027, and bears interest at an annual rate of SOFR plus 3.25%. Borrowings under the APACF II Facility, which mature 364 days after the borrowings occur, may be used by the APACF II Borrower to fund construction costs including equipment, labor, interconnection, as well as other development costs. The Company incurred $0.3 million of debt issuance costs related to the APACF II Facility, which have been deferred and will be recognized as interest expense through November 10, 2027. On January 19, 2024, the Company borrowed $31.9 million under the APACF II Facility, which was offset by $0.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through November 10, 2027. The APACF II Facility is secured by membership interests in the Company's subsidiaries and other collateral, including equipment.

As of March 31, 2024, the outstanding principal balance of the APACF II Facility was $31.9 million, less unamortized debt issuance costs of $0.9 million. As of December 31, 2023, no amounts were outstanding under the APACF II Facility. As of March 31, 2024, the Company was in compliance with all covenants under the APACF II Facility.

Other Term Loans - Construction to Term Loan Facility

On January 10, 2020, APA Construction Finance, LLC (“APACF”) a wholly-owned subsidiary of the Company, entered into a credit agreement with Fifth Third Bank, National Association and Deutsche Bank AG New York Branch to fund the development and construction of future solar facilities (“Construction Loan to Term Loan Facility”). The Construction Loan to Term Loan Facility included a construction loan commitment of $187.5 million, which expired on January 10, 2023. The construction loan commitment can convert to a term loan upon commercial operation of a particular solar energy facility. On June 15, 2023, the Company repaid all outstanding term loans of $15.8 million and terminated the facility.

Other Term Loans - Project-Level Term Loan

In conjunction with an acquisition of assets on August 29, 2022, the Company assumed a project-level term loan with an outstanding principal balance of $14.1 million and a fair value discount of $2.2 million. The term loan is subject to scheduled semi-annual amortization and interest payments, and matures on September 1, 2029.

As of March 31, 2024, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.7 million. As of December 31, 2023, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.8 million.

The term loan is secured by an interest in the underlying solar project assets and the revenues generated by those assets. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

Financing Obligations Recognized in Failed Sale Leaseback Transactions

50

From time to time, the Company sells equipment to third parties and enters into master lease agreements to lease the equipment back for an agreed-upon term. The Company has assessed these arrangements and determined that the transfer of assets should not be accounted for as a sale in accordance with ASC 842. Therefore, the Company accounts for these transactions using the financing method by recognizing the consideration received as a financing obligation, with the assets subject to the transaction remaining on the balance sheet of the Company and depreciated based on the Company's normal depreciation policy. The aggregate proceeds have been recorded as long-term debt within the condensed consolidated balance sheets.

As of March 31, 2024, the Company's recorded financing obligations were $41.9 million, net of $0.9 million of deferred transaction costs. As of December 31, 2023, the Company's recorded financing obligations were $41.8 million, net of $0.9 million of deferred transaction costs. Payments of $0.3 million and $0.2 million were made under financing obligations for the three months ended March 31, 2024, and 2023, respectively. Interest expense, inclusive of the amortization of deferred transaction costs for the three months ended March 31, 2024 and 2023, was $0.4 million.

Cash Flows

For the Three Months Ended March 31, 2024 and 2023

The following table sets forth the primary sources and uses of cash and restricted cash for each of the periods presented below:

	Three Months Ended March 31,
	2024		2023
	(in thousands)
Net cash provided by (used for):
Operating activities	$	4,525	$	14,225
Investing activities	(141,924)		(319,435)
Financing activities	121,985		189,993
Net decrease in cash and restricted cash	$	(15,414)	$	(115,217)

Operating Activities

During the three months ended March 31, 2024, cash provided by operating activities of $4.5 million consisted primarily of net income of $4.1 million adjusted for net non-cash income of $2.7 million and a net increase in liabilities of $8.0 million, partially offset by a net increase in assets of $4.8 million.

During the three months ended March 31, 2023, cash provided by operating activities of $14.2 million consisted primarily of net income of $3.8 million adjusted for net non-cash income of $0.9 million, a net increase in assets of $4.7 million, and a net increase in liabilities of $6.6 million.

Investing Activities

During the three months ended March 31, 2024, net cash used in investing activities was $141.9 million, consisting of $18.5 million of capital expenditures, $119.6 million of payments to acquire renewable energy businesses, net of cash and restricted cash acquired, and $4.0 million of payments to acquire renewable energy facilities from third parties, net of cash and restricted cash acquired. Net cash used in investing activities was partially offset by $0.3 million of proceeds from disposal of property, plant and equipment.

During the three months ended March 31, 2023, net cash used in investing activities was $319.4 million, consisting of $24.8 million of capital expenditures, $288.2 million of payments to acquire renewable energy businesses, net of cash and restricted cash acquired, and $6.4 million of payments to acquire renewable energy facilities from third parties, net of cash and restricted cash acquired.

Financing Activities

During the three months ended March 31, 2024, net cash provided by financing activities was $122.0 million, consisting of $131.9 million of proceeds from issuance of long-term debt. Net cash provided by financing activities was partially off-set

51

by $7.2 million to repay long-term debt, $1.2 million paid for debt issuance costs, and $1.5 million of distributions to noncontrolling interests.

During the three months ended March 31, 2023, net cash provided by financing activities was $190.0 million, consisting of $204.7 million of proceeds from issuance of long-term debt and $1.7 million of contributions from noncontrolling interests. Net cash provided by financing activities was partially offset by $7.7 million to repay long-term debt, $2.0 million paid for debt issuance costs, $4.5 million of deferred purchase price payable, $1.1 million of redemption of redeemable noncontrolling interests, and $1.1 million of distributions to noncontrolling interests.

Critical Accounting Policies and Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our estimates, including those related to inventories, long-lived assets, goodwill, identifiable intangibles, contingent consideration liabilities and deferred income tax valuation allowances. We base our estimates on historical experience and on appropriate and customary assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Some of these accounting estimates and assumptions are particularly sensitive because of their significance to our condensed consolidated financial statements and because of the possibility that future events affecting them may differ markedly from what had been assumed when the financial statements were prepared. As of March 31, 2024, there have been no significant changes to the accounting estimates that we have deemed critical. Our critical accounting estimates are more fully described in our 2023 Annual Report on Form 10-K.

Other than the policies noted in Note 2, “Significant Accounting Policies,” in the Company’s notes to the condensed consolidated financial statements in this Report, there have been no material changes to its critical accounting policies and estimates as compared to those disclosed in its audited consolidated financial statements in our 2023 Annual Report on Form 10-K.

Emerging Growth Company Status

In April 2012, the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, was enacted. Section 107 of the JOBS Act provides that an “emerging growth company,” or an EGC, can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act of 1933, as amended, or the Securities Act, for complying with new or revised accounting standards. Thus, an EGC can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. Altus Power has elected to use the extended transition period for new or revised accounting standards during the period in which we remain an EGC.

We expect to remain an EGC until the earliest to occur of: (1) the last day of the fiscal year in which we, as applicable, have more than $1.235 billion in annual revenue; (2) the date we qualify as a “large accelerated filer,” with at least $700 million of equity securities held by non-affiliates; (3) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the prior three-year period; and (4) December 31, 2025, the last day of the fiscal year ending after the fifth anniversary of our initial public offering.

Recent Accounting Pronouncements

A description of recently issued accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2 to our condensed consolidated financial statements appearing elsewhere in this Report.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to various market risks in our normal business activities. Market risk is the potential loss that may result from market changes associated with our business or with an existing or forecasted financial or commodity transactions.

Interest Rate Risk

A significant portion of our outstanding debt has a fixed interest rate (for further details refer to Note 6, "Debt," in our unaudited condensed consolidated financial statements included elsewhere in this Report). However, changes in interest rates create a modest risk because certain borrowings bear interest at floating rates based on LIBOR plus a specified margin. We sometimes manage our interest rate exposure on floating-rate debt by entering into derivative instruments to hedge all or a

52

portion of our interest rate exposure on certain debt facilities. We do not enter into any derivative instruments for trading or speculative purposes. Changes in economic conditions could result in higher interest rates, thereby increasing our interest expense and operating expenses and reducing funds available for capital investments, operations, and other purposes. A hypothetical 10% increase in our interest rates on our variable debt facilities would not have a material impact on the value of the Company’s cash, cash equivalents, debt, net income, or cash flows.

Credit Risk

Financial instruments which potentially subject Altus to significant concentrations of credit risk consist principally of cash and restricted cash. Our investment policy requires cash and restricted cash to be placed with high-quality financial institutions and limits the amount of credit risk from any one issuer. We additionally perform ongoing credit evaluations of our customers’ financial condition whenever deemed necessary and generally do not require collateral.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q, as such term is defined in Rules 13a‐15(e) and 15d‐15(e) under the Securities and Exchange Act, as amended (the “Exchange Act”).

Disclosure controls and procedures are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Based on this evaluation of our disclosure controls and procedures, our management, including our Chief Executive Officer and Chief Financial Officer, have concluded that our disclosure controls and procedures were not effective as of March 31, 2024, because of the material weaknesses in our internal control over financial reporting that were disclosed in our 2023 Annual Report on Form 10-K.

Remediation Plan

As previously described in Part II, Item 9A of our 2023 Annual Report on Form 10-K, with the oversight of senior management and our audit committee, we are taking the steps below and plan to take additional measures to remediate the underlying causes of the material weaknesses:

•We have proceeded with steps intended to remediate the insufficient qualified personnel material weakness, including the verification that sufficient resources are maintained to operate an effective control environment;

•We have performed an initial formalized risk assessment for SOX processes, and are remediating identified control gaps; and

•We have proceeded with steps intended to remediate the selection and development of control activities material weakness through the implementation of numerous controls over systems, process, governance and people to improve the broader effectiveness of internal controls over financial reporting.

We cannot assure you that the measures we have taken to date, and are continuing to implement, will be sufficient to remediate the material weaknesses we have identified or avoid potential future material weaknesses.

Changes in Internal Control over Financial Reporting

As discussed above, we implemented certain measures to remediate the material weaknesses identified in the design and operation of our internal control over financial reporting. Other than those measures, there have been no changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended March 31, 2024, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Part II - Other Information

Item 1. Legal Proceedings

From time to time, the Company is a party to a number of claims and governmental proceedings which are ordinary, routine matters incidental to its business. In addition, in the ordinary course of business the Company periodically has disputes with vendors and customers. All current pending matters are not expected to have, either individually or in the aggregate, a material adverse effect on the Company’s financial position or results of operations.

Item 1A. Risk Factors

There have been no material changes to the Risk Factors described in Part I, Item 1A "Risk Factors" of the 2023 Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the three months ended March 31, 2024, the following director/officer terminated their previously adopted “Rule 10b5-1 trading arrangement,” as defined in Item 408(a) of Regulation S-K intending to satisfy the affirmative defense of Rule 10b5-1(c): Mr. Weber terminated his 10b5-1 trading arrangement, which was adopted on September 14, 2023 had a duration of December 14, 2023 to December 31, 2024, and provided for a sale of 750,000 total shares of Class A common stock, subject to certain pricing triggers.

During the three months ended March 31, 2024, the following directors and/or officers adopted a “Rule 10b5-1 trading arrangement,” as defined in Item 408(a) of Regulation S-K intending to satisfy the affirmative defense of Rule 10b5-1(c):

Name and Title	Maximum Number of Shares of Class A Common Stock to be Sold (1)	Duration (2)	Adoption Date	Expiration Date
Lars Norell (3) Former Co-Chief Executive Officer	1,080,000	July 1, 2024 – May 30, 2025	March 28, 2024	May 30, 2025

(1) The volume of sales is determined, in part, based on certain pricing triggers outlined in each adopting person's trading arrangement.

(2) Each trading arrangement permits transactions through and including the earlier to occur of (a) the completion of all sales or (b) the expiration date listed in the table.

(3) Mr. Norell entered into his Rule 10b5-1 trading arrangement, dated March 28, 2024 (the “Norell Trading Arrangement”) through Start Capital LLC, an entity which he controls. The Norell Trading Arrangement amends Mr. Norell’s prior Rule 10b5-1 trading arrangement intending to satisfy the affirmative defense of Rule 10b5-1(c), which was adopted on December 28, 2022, and amended on August 25, 2023, had a duration of December 1, 2023 to May 30, 2025, and provided for a sale of 1,800,000 total shares of Class A common stock, subject to certain pricing triggers.

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Item 6. Exhibits

Exhibit No.	Description
10.1*	Separation and Release of Claims Agreement by and between Altus Power, Inc. and its affiliates and subsidiaries, and Lars Norell, dated as of April 28, 2024
10.2*	Assignment and Assumption Agreement by and among Altus Power, Inc., CBRE Acquisition Sponsor, LLC, and Robert Charles Bernard, dated as of April 18, 2024
31.1*	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002
32**	Certification of Chief Executive Officers and Chief Financial Officer pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its tags are embedded within the inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (embedded within the inline XBRL document).

*Filed herewith

**Furnished herewith

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

Date: May 9, 2024	By:	/s/ Gregg J. Felton
	Name:	Gregg J. Felton
	Title:	Chief Executive Officer

Date: May 9, 2024	By:	/s/ Dustin L. Weber
	Name:	Dustin L. Weber
	Title:	Chief Financial Officer

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EX-10.1

SEPARATION AND RELEASE OF CLAIMS AGREEMENT

This Separation and Release of Claims Agreement (the “Agreement”) is entered into by and between Altus Power, Inc., and its affiliates and subsidiaries, including Altus Power America Management, LLC, a Delaware limited liability company (hereinafter referred to collectively as the “Company”) and Lars Norell (“Norell”) (collectively referred to as the “Parties”).

1.Separation Date. The Parties agree that Norell has voluntarily resigned from his positions as co-Chief Executive Officer of the Company and member of the Company’s Board of Directors as of close of business on April 26, 2024 (the “Separation Date”). After the Separation Date, Norell will not represent and has not represented that Norell is an employee, officer, agent, or representative of the Company for any purpose. Except as otherwise set forth in this Agreement, the Separation Date was the employment termination date for Norell for all purposes, and Norell is not entitled to any further compensation, monies, or other benefits from the Company, including coverage under any benefit plans or programs sponsored by the Company, as of the Separation Date.

2.Return of Property. Norell represents and warrants that he will return or has returned all Company property, including identification cards or badges, access codes or devices, keys, laptops, computers, telephones, mobile phones, hand-held electronic devices, credit cards, electronically stored documents or files and storage devices, physical files, and any other Company property in Norell's possession, within one business day of the Separation Date.

3.Representations. Norell specifically represents, warrants, and confirms that he has disclosed to the Company’s General Counsel before executing this Agreement all complaints or lawsuits which he has filed, if any, against the Company with any state or federal court or arbitration forum.

4.Severance Payments.

(a)Pursuant to Section 5(b) of the Employment Agreement between the Company and Norell dated October 21, 2021 (the “Employment Agreement”), and subject to any and all conditions and obligations set forth therein, the Company will pay Norell, in addition to Final Compensation as defined in the Employment Agreement, (i) twelve (12) months of Norell’s base salary as of the Separation Date ($570,000), less all relevant taxes and other withholdings; (ii) a pro-rata short-term incentive bonus for the 2024 performance period based on the number of days Norell was employed by the Company during the performance period and the amount of the short-term incentive bonus determined based on actual performance for the entire performance period, less all relevant taxes and other withholdings; and (iii) subject to Norell’s timely election and continued eligibility for COBRA continuation coverage, Company-subsidized COBRA continuation coverage of medical, dental and vision benefits for a period of twelve (12) months from the Separation Date (with Norell paying such applicable active employee rates during such twelve (12) month period), or, if earlier, until either Norell becomes eligible for medical benefits from a subsequent employer or Norell does not pay the requisite

1

monthly premium (collectively, the “Severance Payments”). Norell represents, warrants, and confirms that he has received his complete annual bonus for the 2023 performance year.

The base salary portion of the Severance Payment will be payable in the form of salary continuation in accordance with the normal payroll practices of the Company, with the first such payment, which will consist of the portion of the base salary continuation for the Company payroll periods between the Separation Date and the date of payment, made on the Company’s next regular payday following the Effective Date of this Agreement, as defined below, and the remaining installments of the base salary continuation paid on the Company’s regularly scheduled payroll dates for the remainder of the twelve (12) month period from the Separation Date. The pro-rata short-term incentive bonus portion of the Severance Payment will be paid on a date in 2025 as provided in Section 2(b) of the Employment Agreement.

Norell understands, acknowledges, and agrees that pursuant to Section 5(c) of the Employment Agreement, receipt of these benefits is conditioned on his signing and returning, without revoking, this Agreement, and on his continued compliance with the Confidential Information, Inventions and Proprietary Rights Agreement executed on October 21, 2021 (the “CIIA”)(annexed hereto as Exhibit A). Norell further acknowledges that Norell is not entitled to any additional payment or consideration not specifically referenced in this Agreement, and that the payments under this Agreement satisfy in full the payments referenced in paragraph 7(c) of the CIIA.

(b)In further consideration for Norell’s execution of, non-revocation of, and compliance with this Agreement, including the release and waiver of claims and other post-termination obligations, and in addition to the payments provided under Section 5(b) of the Employment Agreement, the Company will: (i) extend the continuation of Norell’s base salary for an additional six (6)-month period beginning April 26, 2025; and (ii) pay Norell a lump sum of $956,094.00 minus all applicable payroll deductions upon the Effective Date of this Agreement.

5.Release.

(a)Norell's General Release and Waiver of Claims

In exchange for the consideration provided in this Agreement, Norell and Norell's heirs, executors, representatives, administrators, agents, and assigns (collectively, the “Releasors”) irrevocably and unconditionally fully and forever waive, release, and discharge the Company, including the Company's parents, subsidiaries, affiliates, predecessors, successors, and assigns, and each of its and their respective current and former officers, directors, employees, and shareholders, in their corporate and individual capacities (collectively, the “Released Parties”), from any and all claims, demands, actions, causes of actions, judgments, rights, fees, damages, debts, obligations, liabilities, and expenses (inclusive of attorneys' fees) of any kind whatsoever, whether known or unknown (collectively, “Claims”), that Releasors may have or have ever had against the Released Parties, or any of them, arising out of or in any way related to Norell's hire, benefits, employment, termination, or separation from employment with the Company, or by

2

reason of any actual or alleged act, omission, transaction, practice, conduct, occurrence, or other matter from the beginning of time up to and including the date of Norell's execution of this Agreement, including, but not limited to:

(i)any and all claims under Title VII of the Civil Rights Act of 1964 (Title VII), the Americans with Disabilities Act (ADA), the Family and Medical Leave Act (FMLA) (regarding existing but not prospective claims), the Fair Labor Standards Act (FLSA), the Equal Pay Act, the Employee Retirement Income Security Act (ERISA) (regarding unvested benefits), the Civil Rights Act of 1991, Section 1981 of U.S.C. Title 42, the Fair Credit Reporting Act (FCRA), the Worker Adjustment and Retraining Notification (WARN) Act, the Uniform Services Employment and Reemployment Rights Act (USERRA), the Genetic Information Nondiscrimination Act (GINA), the Immigration Reform and Control Act (IRCA), the Connecticut Family and Medical Leave Act, Connecticut's whistleblower law, Connecticut's free speech law, the Connecticut Fair Employment Practices Act, Connecticut's minimum wage and wage payment laws, the anti-retaliation provision of Connecticut’s workers' compensation statute, all including any amendments and their respective implementing regulations, and any other federal, state, local, or foreign law (statutory, regulatory, or otherwise) that may be legally waived and released; however, the identification of specific statutes is for purposes of example only, and the omission of any specific statute or law shall not limit the scope of this general release in any manner;

(ii)any and all claims for compensation of any type whatsoever, including but not limited to claims for salary, wages, bonuses, commissions, incentive compensation, vacation, and severance that may be legally waived and released;

(iii)any and all claims arising under tort, contract, and quasi-contract law, including but not limited to claims of breach of an express or implied contract, tortious interference with contract or prospective business advantage, breach of the covenant of good faith and fair dealing, promissory estoppel, detrimental reliance, invasion of privacy, violation of biometric and data privacy laws, nonphysical injury, personal injury or sickness or any other harm, wrongful or retaliatory discharge, fraud, defamation, slander, libel, false imprisonment, and negligent or intentional infliction of emotional distress; and

(iv)any and all claims for monetary or equitable relief, including but not limited to attorneys' fees, back pay, front pay, reinstatement, experts' fees, medical fees or expenses, costs and disbursements, punitive damages, liquidated damages, and penalties.

However, notwithstanding the forgoing or anything herein to the contrary, this general release and waiver of claims excludes, and Norell does not waive, release, or discharge: (A) claims that cannot be waived by law, such as claims for unemployment benefit rights and claims for non-personal relief before any federal, state, or local administrative agencies; (B) any rights to vested benefits, such as pension or retirement benefits, the rights to which are governed by the terms of the applicable plan documents and award agreements; (C) any and all rights to indemnification and all indemnification-related benefits as provided in all parts of Article VII of the Second Amended and Restated Bylaws of Altus Power, Inc (annexed hereto as Exhibit B),

3

which is expressly incorporated into this Agreement; or (D) any claims with respect to any of Norell’s rights under this Agreement.

This Agreement does not alter the Company’s rights, if any, to cancel, forfeit, claw-back, or rescind any of the Company’s outstanding common stock held directly by Norell, his family holding company, and in trusts for the benefit of family members. Such shares continue to be subject to applicable law and the applicable plan, shareholder, grant, and policy documents.  Nothing in this Agreement shall operate to cancel, forfeit, claw-back, or rescind any vested equity previously granted to Norell.

(b)Specific Release of ADEA Claims

In further consideration of the payments and benefits provided to Norell in this Agreement, the Releasors hereby irrevocably and unconditionally fully and forever waive, release, and discharge the Released Parties from any and all Claims, whether known or unknown, from the beginning of time through the date of Norell's execution of this Agreement, arising under the Age Discrimination in Employment Act (ADEA), as amended, and its implementing regulations. By signing this Agreement, Norell hereby acknowledges and confirms that:

(i)Norell has read this Agreement in its entirety and understands all of its terms;

(ii)by this Agreement, Norell has been advised by this writing to consult with an attorney of Norell's choosing and has consulted with such counsel as Norell believed was necessary before signing this Agreement;

(iii)Norell knowingly, freely, and voluntarily agrees to all of the terms and conditions set out in this Agreement including, without limitation, the waiver, release, and covenants contained in it;

(iv)Norell is signing this Agreement, including the waiver and release, in exchange for good and valuable consideration in addition to anything of value to which Norell is otherwise entitled;

(v)Norell was given at least twenty-one (21) days to consider the terms of this Agreement and consult with an attorney of Norell's choice, although Norell may sign it sooner if desired, and changes to this Agreement, whether material or immaterial, do not restart the running of the 21-day period;

(vi)Norell understands that Norell has seven (7) days after signing this Agreement to revoke the release in this paragraph by delivering notice of revocation to Sophia Lee, General Counsel of the Company, by email at sophia.lee@altuspower.com, with a copy to Steven Wall at Morgan, Lewis & Bockius LLP, by email at

4

steven.wall@morganlewis.com, before the end of this seven-day period; and

(vii)Norell understands that the release contained in this paragraph does not apply to rights and claims that may arise after Norell signs this Agreement.

This Agreement shall not become effective until the eighth (8th) day after Norell signs, without revoking, this Agreement (“Effective Date”). No payments due to Norell under this Agreement shall be made or begin before the Effective Date.

6.Post-Termination Obligations and Restrictive Covenants. Norell understands and acknowledges that the CIIA remains in full force and effect, and that Norell’s receipt of the benefits outlined in this Agreement is conditioned upon his continued compliance with the terms of the CIIA. Pursuant to Section 7 (C) of the CIIA, the Company hereby notifies Norell that he is and will remain subject to the specific restrictive covenants contained therein.

7.Resignation for Board and Officer Positions. Norell acknowledges and agrees that he has resigned as of the Separation Date from all director and officer positions he holds with the Company and all of its affiliates. 

8.Cooperation. The Parties agree that certain matters in which Norell has been involved during Norell's employment may need Norell's cooperation with the Company in the future. Accordingly, Norell shall cooperate with the Company as requested by the Company regarding any matters arising out of or related to Norell's service to the Company.  Specifically, but without limiting the foregoing sentence, Norell may from time to time be asked to testify or provide information to the Company or its counsel in connection with legal proceedings or investigations involving the Company regarding events about which Norell has knowledge. Norell agrees to reasonably assist and cooperate with the Company in preparing for such legal proceedings and investigations by providing any truthful relevant information Executive may have. In connection with any assistance requested by the Company of Norell under this paragraph, the Company will compensate Norell for reasonable travel, meal and accommodation expenses incidental to any such cooperation provided to the Company.

9.Non-Disparagement. Norell agrees and covenants that Norell shall not make, publish, or communicate to any person or entity or in any public or private forum any false, defamatory, or disparaging remarks, comments, or statements concerning the Company or its businesses, or any of its current or former employees, officers, directors, or shareholders, now or at any time in the future. The Company agrees that no member of its Board of Directors shall make, publish, or communicate to any person or entity or in any public or private forum any false, defamatory, or disparaging remarks, comments, or statements concerning Norell.

10.Press Release and Form 8-K. The Company has provided Norell with the opportunity to review and comment on the press release dated April 29, 2024, and on the Form 8-K to be filed in connection with Norell’s resignation. The parties agree that the press release

5

annexed hereto as Exhibit C shall be the version of the press release to be issued and filed in connection with Norell’s resignation.

11.Confidentiality of Agreement. Norell agrees and covenants that Norell shall not disclose the terms of or the amount paid under this Agreement to any individual or entity; provided, however, that Norell will not be prohibited from making disclosures to Norell's spouse, domestic partner, attorney, tax advisors, or as may be required by law.

Nothing in this Agreement in any way is intended to restrict or impede Norell from disclosing information about possible securities law violations to the SEC, or exercising protected rights under the NLRA or other federal, state, or local laws, to the extent that such rights cannot be waived by agreement, or from complying with any applicable law or regulation or a valid order of a court of competent jurisdiction or an authorized government agency, provided that such compliance does not exceed that required by the law, regulation, or order.

12.Remedies. In the event of a breach or threatened breach by Norell of any provision of this Agreement, Norell hereby consents and agrees that money damages would not afford an adequate remedy and that Company shall be entitled to seek a temporary or permanent injunction or other equitable relief against such breach or threatened breach from any court of competent jurisdiction, without the necessity of showing any actual damages, and without the necessity of posting any bond or other security. Any equitable relief shall be in addition to, not instead of, legal remedies, monetary damages, or other available relief.

If Norell fails to comply with any of the terms of this Agreement or post-employment obligations contained in it, the Company may, in addition to any other available remedies, reclaim any amounts paid to Norell under the provisions of this Agreement and terminate any benefits or payments that are later due under this Agreement, without waiving the releases provided in it.

13.Governing Law, Jurisdiction, and Venue. This Agreement and all matters arising out of or relating to this Agreement and Norell's employment or termination of employment with the Company, whether sounding in contract, tort, or statute, for all purposes shall be governed by and construed in accordance with the laws of the State of Connecticut, without regard to any conflicts of laws principles that would require the laws of any other jurisdiction to apply.

14.Entire Agreement. Unless specifically provided herein, this Agreement, the Employment Agreement, and the CIIA contain all of the understandings and representations between Company and Norell relating to the subject matter hereof and supersede all prior and contemporaneous understandings, discussions, agreements, representations, and warranties, both written and oral, regarding such subject matter. Nothing in this Agreement modifies, supersedes, voids, or otherwise alters the Employment Agreement and the CIIA, which shall remain in full force and effect.

15.Modification and Waiver. No provision of this Agreement may be amended or modified unless the amendment or modification is agreed to in writing and signed by Norell and

6

by the Chief Executive Officer and General Counsel of the Company. No waiver by any Party of any breach by the other Party of any condition or provision of this Agreement to be performed by that Party shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by any Party in exercising any right, power, or privilege under this Agreement operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege.

16.Severability. If any provision of this Agreement is found by a court or arbitral authority of competent jurisdiction to be invalid, illegal, or unenforceable in any respect, or enforceable only if modified, such finding shall not affect the validity of the remainder of this Agreement, which shall remain in full force and effect and continue to be binding on the Parties.

17.Counterparts. The Parties may execute this Agreement in counterparts, each of which shall be deemed an original, and all of which taken together shall constitute one and the same instrument. Delivery of an executed counterpart of this Agreement by facsimile, email in portable document format (.pdf), DocuSign, or by any other electronic means intended to preserve the original graphic and pictorial appearance of a document has the same effect as delivery of an executed original of this Agreement.

18.No Admission of Liability. Nothing in this Agreement shall be construed as an admission by the Company of any wrongdoing, liability, or noncompliance with any federal, state, city, or local rule, ordinance, statute, common law, or other legal obligation.

19.Withholding/Taxes. All amounts payable to Norell under this Agreement shall be subject to applicable tax and other withholdings, and the Company shall withhold from any payments under this Agreement all federal, state and local and other taxes as the Company is required to withhold pursuant to any law or governmental rule or regulation. Norell shall be solely responsible for all taxes that result from Norell’s receipt of the payments and benefits to be provided under this Agreement, and none of the Company nor any of its subsidiaries or affiliates makes nor have they made any representation, warranty or guarantee of any federal, state or local or other tax consequences to Norell of Norell’s receipt of any payment or benefit hereunder, including, but not limited to, under Section 409A of the Internal Revenue Code of 1986, as amended.

20.Acknowledgment of Full Understanding. NORELL ACKNOWLEDGES AND AGREES THAT HE HAS FULLY READ, UNDERSTANDS, AND VOLUNTARILY ENTERS INTO THIS AGREEMENT. NORELL ACKNOWLEDGES AND AGREES THAT HE HAS HAD AN OPPORTUNITY TO ASK QUESTIONS AND CONSULT WITH AN ATTORNEY OF HIS CHOICE BEFORE SIGNING THIS AGREEMENT. NORELL FURTHER ACKNOWLEDGES THAT HIS SIGNATURE BELOW IS AN AGREEMENT TO RELEASE THE COMPANY FROM ANY AND ALL CLAIMS THAT CAN BE RELEASED AS A MATTER OF LAW.

IN WITNESS WHEREOF, the Parties have executed this Agreement as of the dates indicated below.

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ALTUS POWER, INC.	LARS NORELL
By: /s/ Christine Detrick                 Name: Christine Detrick Title: Chairperson Date: April 28, 2024	Signature: /s/ Lars Norell                 Date: April 28, 2024

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EX-10.2

ASSIGNMENT AND ASSUMPTION AGREEMENT

This Assignment and Assumption Agreement (this “Agreement”) is entered into as of April 18, 2024, by and among Altus Power, Inc., a Delaware corporation (the “Company”), CBRE Acquisition Sponsor, LLC, a Delaware limited liability company (“CBRE”), and Robert Charles Bernard (the “Board Member” and collectively with the Company and CBRE, the “Parties”). Capitalized terms used but not defined herein shall have the meanings given to them in the Company’s 2021 Omnibus Incentive Plan (the “Plan”).

RECITALS

WHEREAS, the Board Member became a member of the Board of Directors (the “Board”) of the Company on February 27, 2024;

WHEREAS, on March 12, 2024, the Board Member received 14,859 restricted stock units of the Company (the “2024 Compensation”) as consideration for services as a non-employee member of the Board;

WHEREAS, the Board Member wishes to assign to CBRE, and CBRE desires to assume from the Board Member, the 2024 Compensation and any future equity compensation received by the Board Member from the Company as consideration for services as a non-employee member of the Board (together with the 2024 Compensation, the “Compensation”), in each case, at no cost; and

WHEREAS, the Administrator of the Plan has approved the Assignment (as defined below) pursuant to Section 6.3 of the Plan.

NOW, THEREFORE, the Parties hereby agree to effectuate the assignment of the Compensation from the Board Member to CBRE pursuant to the following terms and conditions (the “Assignment”).

AGREEMENT

To implement the foregoing and in consideration of the mutual agreements contained herein, the Parties agree as follows:

    Section 1.    Effective Date of Transfer. The assignment of the 2024 Compensation to CBRE will be effective as of the date hereof (the “Effective Date”) and the assignment of any other Compensation shall be the date such Compensation is received by the Board Member.

    Section 2.    Effect of Transfer. Upon and after the Assignment, CBRE shall be bound by the terms and conditions of the Plan. For all purposes of the Plan and the Assignment evidenced by this Agreement, CBRE shall be treated as the Participant in respect of whom the grant was made. The Board Member, CBRE and the Company acknowledge and agree that references to the “Participant” in the Plan as it relates to any vesting conditions associated with the restricted stock units (the “RSUs”) underlying any Compensation shall continue to refer to the Board Member.

    Section 3.    Representations of the Board Member and CBRE. Each of the Board Member and CBRE hereby represents and acknowledges that he or it, as applicable, has consulted, or has declined the opportunity to consult, his or its tax, legal, accounting and financial advisors regarding the specific tax, legal, accounting, and financial consequences of the Assignment, and no representations are made by the Company or any of its affiliates with respect to the tax, legal, accounting or financial consequences thereof.

    Section 4.    Board Member’s Service with the Company. Nothing contained in this Agreement or in any other agreement entered into between the Company or any of its affiliates and the Board Member obligates the Company or any affiliate of the Company to employ or otherwise retain or continue the services of the Board Member in any capacity whatsoever.

    Section 5.    Binding Effect. The provisions of this Agreement shall be binding upon and accrue to the benefit of the Parties hereto and their respective heirs, legal representatives, successors and permitted assigns.

    Section 6.    Amendment. This Agreement may be amended only by a written instrument signed by the Parties hereto.

    Section 7.    Governing Law. This Agreement and all claims or disputes arising out of or based upon this Agreement or relating to the subject matter hereof will be governed by and construed in accordance with Delaware law without giving effect to any choice or conflict of laws provision or rule that would cause the application of the domestic substantive laws of any other jurisdiction.

    Section 8.    Miscellaneous. (a) This Agreement may be executed in separate counterparts, each of which is deemed to be an original and all of which taken together constitute one and the same agreement.The exchange of copies of this Agreement and of signature pages by electronic format (i.e., “pdf” or “tif”) transmission shall constitute effective execution and delivery of this Agreement as to the Parties hereto and may be used in lieu of the original Agreement for all purposes. Signatures of the Parties hereto transmitted by electronic format (i.e., “pdf” or “tif”) shall be deemed to be their original signatures for all purposes. The words “execution,” “signed,” “signature,” “delivery” and words of like import in or relating to this Agreement or any document to be signed in connection with this Agreement shall be deemed to include electronic signatures, deliveries or the keeping of records in electronic form, each of which shall be of the same legal effect, validity or enforceability as a manually executed signature, physical delivery thereof or the use of a paper-based recordkeeping system, as the case may be, and the parties hereto consent to conduct the transactions contemplated hereunder by electronic means.

    (b) If any provision of this Agreement shall be declared illegal, void or unenforceable by any court of competent jurisdiction, the other provisions shall not be affected but shall remain in full force and effect.

[Signature page follows]

-2-

IN WITNESS WHEREOF, the Parties have executed this Agreement as of the date first above written.

ALTUS POWER, INC.

By:    /s/ Gregg Felton                
    Name:    Gregg Felton
    Title:    Co-Founder and Co-Chief Executive

Officer

CBRE Acquisition Sponsor, LLC

By: CBRE Services, Inc.

Its: Managing Member

By:    /s/ Emma E. Giamartino                
    Name:    Emma E. Giamartino
    Title:    Chief Financial Officer

/s/ Robert Charles Bernard                    Robert Charles Bernard

EX-31.1

EXHIBIT31.1

CERTIFICATIONS

I, Gregg J. Felton, certify that:

1) I have reviewed this Quarterly Report on Form 10-Q of Altus Power, Inc.;

2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3) Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4) The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules l3a- l5(e) and l5d-15(e)) for the registrant and have:

a)[omitted];

b)[omitted];

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5) The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 9, 2024

/s/ Gregg J. Felton

Chief Executive Officer and Director

EX-31.2

EXHIBIT31.2

CERTIFICATIONS

I, Dustin L. Weber, certify that:

1) I have reviewed this Quarterly Report on Form 10-Q of Altus Power, Inc.;

2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3) Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4) The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules l3a- l5(e) and 15d-15(e)) for the registrant and have:

a)[omitted];

b)[omitted];

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5) The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 9, 2024

/s/ Dustin L. Weber

Chief Financial Officer

EX-32

EXHIBIT 32

CERTIFICATIONS PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. SECTION 1350)

The undersigned, Gregg J. Felton, Chief Executive Officer, and Dustin L. Weber, Chief Financial Officer of Altus Power, Inc. (the "Company"), hereby certify as of the date hereof, solely for the purposes of 18 U.S.C. §1350, that:

(i)the Quarterly Report on Form 10-Q for the period ended March 31, 2024, of the Company (the "Report") fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

(ii)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Date: May 9, 2024

	/s/ Gregg J. Felton
Chief Executive Officer and Director
	/s/ Dustin L. Weber
Chief Financial Officer

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 30, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-04321
Entity Registrant Name	ALTUS POWER, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3448396
Entity Address, Address Line One	2200 Atlantic Street
Entity Address, Address Line Two	Sixth Floor
Entity Address, City or Town	Stamford
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06902
City Area Code	203
Local Phone Number	698-0090
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	AMPS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Central Index Key	0001828723
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		159,874,981
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		796,950

XML

Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Operating revenues, net	$ 40,659	$ 29,378
Operating expenses
Cost of operations (exclusive of depreciation and amortization shown separately below)	10,920	5,976
General and administrative	10,022	7,362
Depreciation, amortization and accretion expense	16,130	11,376
Acquisition and entity formation costs	1,066	1,491
(Gain) loss on fair value remeasurement of contingent consideration, net	(79)	50
Gain on disposal of property, plant and equipment	(88)	0
Stock-based compensation	4,304	2,872
Total operating expenses	42,275	29,127
Operating (loss) income	(1,616)	251
Other (income) expense
Change in fair value of Alignment Shares liability	(26,077)	(17,018)
Other (income) expense, net	(683)	90
Interest expense, net	16,193	12,446
Total other income, net	(10,567)	(4,482)
Income before income tax expense	8,951	4,733
Income tax expense	(4,896)	(888)
Net income	4,055	3,845
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(3,454)	(1,772)
Net income attributable to Altus Power, Inc.	$ 7,509	$ 5,617
Net income per share attributable to common stockholders
Basic (in usd per share)	$ 0.05	$ 0.04
Diluted (in usd per share)	$ 0.05	$ 0.03
Weighted average shares used to compute net income per share attributable to common stockholders
Basic (in shares)	159,025,740	158,621,674
Diluted (in shares)	162,242,148	161,003,402

XML

Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 4,055	$ 3,845
Other comprehensive loss
Foreign currency translation adjustment	9	9
Unrealized loss on a cash flow hedge, net of tax	0	(771)
Reclassification of realized gain on cash flow hedge to net income	(404)	0
Other comprehensive loss, net of tax	(395)	(762)
Total comprehensive income	3,660	3,083
Comprehensive loss attributable to the noncontrolling and redeemable noncontrolling interests	(3,454)	(1,772)
Comprehensive income attributable to Altus Power, Inc.	$ 7,114	$ 4,855

XML

Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 173,266	$ 160,817
Current portion of restricted cash	17,622	45,358
Accounts receivable, net	20,057	17,100
Other current assets	5,763	5,522
Total current assets	216,708	228,797
Restricted cash, noncurrent portion	12,625	12,752
Property, plant and equipment, net	1,745,407	1,619,047
Intangible assets, net	47,330	47,588
Operating lease asset	183,655	173,804
Derivative assets	2,585	530
Other assets	10,166	7,831
Total assets	2,218,476	2,090,349
Current liabilities:
Accounts payable	7,411	7,338
Construction payable	11,672	14,108
Interest payable	13,958	8,685
Purchase price payable, current	9,291	9,514
Current portion of long-term debt, net	73,429	39,611
Operating lease liability, current	6,293	6,861
Contract liability, current	2,802	2,940
Total current liabilities	146,085	106,510
Alignment Shares liability	34,415	60,502
Long-term debt, net of unamortized debt issuance costs and current portion	1,253,819	1,163,307
Intangible liabilities, net	20,033	18,945
Asset retirement obligations	18,701	17,014
Operating lease liability, noncurrent	189,136	180,701
Contract liability, noncurrent	6,132	5,620
Deferred tax liabilities, net	14,725	9,831
Other long-term liabilities	2,989	2,908
Total liabilities	1,686,035	1,565,338
Commitments and contingent liabilities (Note 11)
Redeemable noncontrolling interests	24,389	26,044
Stockholders' equity
Common stock $0.0001 par value; 988,591,250 shares authorized as of March 31, 2024, and December 31, 2023; 159,874,981 and 158,999,886 shares issued and outstanding as of March 31, 2024, and December 31, 2023, respectively	16	16
Additional paid-in capital	488,408	485,063
Accumulated deficit	(47,765)	(55,274)
Accumulated other comprehensive income	16,878	17,273
Total stockholders' equity	457,537	447,078
Noncontrolling interests	50,515	51,889
Total equity	508,052	498,967
Total liabilities, redeemable noncontrolling interests, and equity	2,218,476	2,090,349
Related Party
Current liabilities:
Due to related parties	85	51
Other current liabilities	85	51
Nonrelated Party
Current liabilities:
Due to related parties	21,144	17,402
Other current liabilities	$ 21,144	$ 17,402

XML

Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	988,591,250	988,591,250
Common stock, issued (in shares)	159,874,981	158,999,886
Common stock, outstanding (in shares)	159,874,981	158,999,886
Assets of consolidated VIEs, included in total assets above:
Current portion of restricted cash	$ 17,622	$ 45,358
Accounts receivable, net	20,057	17,100
Other current assets	5,763	5,522
Restricted cash, noncurrent portion	12,625	12,752
Property, plant and equipment, net	1,745,407	1,619,047
Intangible assets, net	47,330	47,588
Operating lease asset	183,655	173,804
Other assets	10,166	7,831
Total assets of consolidated VIEs	2,218,476	2,090,349
Liabilities of consolidated VIEs, included in total liabilities above:
Accounts payable	7,411	7,338
Operating lease liability, current	6,293	6,861
Current portion of long-term debt, net	73,429	39,611
Contract liability, current	2,802	2,940
Long-term debt, less current portion	1,253,819	1,163,307
Intangible liabilities, net	20,033	18,945
Asset retirement obligations	18,701	17,014
Operating lease liability, noncurrent	189,136	180,701
Contract liability, noncurrent		0
Other long-term liabilities	2,989	2,908
Total liabilities of consolidated VIEs	1,686,035	1,565,338
Variable Interest Entity, Primary Beneficiary
Assets of consolidated VIEs, included in total assets above:
Cash	13,947	12,191
Current portion of restricted cash	436	1,066
Accounts receivable, net	9,373	8,068
Other current assets	1,445	973
Restricted cash, noncurrent portion	3,979	4,002
Property, plant and equipment, net	868,645	845,024
Intangible assets, net	5,360	5,507
Operating lease asset	98,103	79,597
Other assets	2,228	2,228
Total assets of consolidated VIEs	1,003,516	958,656
Liabilities of consolidated VIEs, included in total liabilities above:
Accounts payable	1,207	1,056
Operating lease liability, current	3,042	2,542
Current portion of long-term debt, net	3,021	3,021
Contract liability, current	484	484
Other current liabilities	1,592	1,473
Long-term debt, less current portion	38,926	38,958
Intangible liabilities, net	3,819	4,522
Asset retirement obligations	9,394	9,185
Operating lease liability, noncurrent	100,671	82,913
Contract liability, noncurrent	4,591	4,011
Other long-term liabilities	1,750	1,771
Total liabilities of consolidated VIEs	$ 168,497	$ 149,936

XML

Condensed Consolidated Statements of Changes in Equity (unaudited) - USD ($) $ in Thousands	Total	Class A Common Stock	Total Stockholders' Equity	Total Stockholders' Equity Class A Common Stock	Common Stock	Common Stock Class A Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Class A Common Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non Controlling Interests
Beginning balance (in shares) at Dec. 31, 2022					158,904,401
Beginning balance at Dec. 31, 2022	$ 444,926		$ 424,101		$ 16		$ 470,004		$ 0	$ (45,919)	$ 20,825
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation, net of withholding taxes (in shares)					83,541
Stock-based compensation, net of withholding taxes	2,813		2,813				2,813
Cash distributions to noncontrolling interests	(526)										(526)
Cash contributions from noncontrolling interests	1,737										1,737
Conversion of convertible securities (in shares)						2,011
Conversion of convertible securities		$ 11		$ 11				$ 11
Noncontrolling interests assumed through acquisitions	13,296										13,296
Redemption of redeemable noncontrolling interests	1,374		1,374				1,374
Other comprehensive loss	(762)		(762)						(762)
Net income (loss)	2,984		5,617							5,617	(2,633)
Ending balance (in shares) at Mar. 31, 2023					158,989,953
Ending balance at Mar. 31, 2023	$ 465,853		433,154		$ 16		474,202		(762)	(40,302)	32,699
Beginning balance (in shares) at Dec. 31, 2023	158,999,886				158,999,886
Beginning balance at Dec. 31, 2023	$ 498,967		447,078		$ 16		485,063		17,273	(55,274)	51,889
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation, net of withholding taxes (in shares)					873,104
Stock-based compensation, net of withholding taxes	3,335		3,335				3,335
Cash distributions to noncontrolling interests	(899)										(899)
Conversion of convertible securities (in shares)						1,991
Conversion of convertible securities		$ 10		$ 10				$ 10
Noncontrolling interests assumed through acquisitions	2,100										2,100
Other comprehensive loss	(395)		(395)						(395)
Net income (loss)	$ 4,934		7,509							7,509	(2,575)
Ending balance (in shares) at Mar. 31, 2024	159,874,981				159,874,981
Ending balance at Mar. 31, 2024	$ 508,052		$ 457,537		$ 16		$ 488,408		$ 16,878	$ (47,765)	$ 50,515

XML

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net income	$ 4,055	$ 3,845
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, amortization and accretion	16,130	11,376
Non-cash lease transactions	(1,299)	112
Deferred tax expense	4,896	888
Amortization of debt discount and financing costs	1,200	753
Change in fair value of Alignment Shares liability	(26,077)	(17,018)
Remeasurement of contingent consideration	(79)	50
Gain on disposal of property, plant and equipment	(88)	0
Reclassification of realized gain on cash flow hedge to net income	(404)	0
Stock-based compensation	4,111	2,813
Other	(1,080)	138
Changes in assets and liabilities, excluding the effect of acquisitions
Accounts receivable	(1,326)	1,685
Due to related parties	34	101
Derivative assets	(2,055)	1,769
Other assets	(1,448)	1,206
Accounts payable	68	2,828
Interest payable	5,273	1,204
Contract liability	163	152
Other liabilities	2,451	2,323
Net cash provided by operating activities	4,525	14,225
Cash flows used for investing activities
Capital expenditures	(18,538)	(24,844)
Payments to acquire renewable energy businesses, net of cash and restricted cash acquired	(119,617)	(288,241)
Payments to acquire renewable energy facilities from third parties, net of cash and restricted cash acquired	(4,035)	(6,350)
Proceeds from disposal of property, plant and equipment	266	0
Net cash used for investing activities	(141,924)	(319,435)
Cash flows used for financing activities
Proceeds from issuance of long-term debt	131,895	204,687
Repayment of long-term debt	(7,208)	(7,724)
Payment of debt issuance costs	(1,231)	(1,976)
Payment of deferred purchase price payable	0	(4,531)
Contributions from noncontrolling interests	0	1,737
Redemption of redeemable noncontrolling interests	0	(1,098)
Distributions to noncontrolling interests	(1,471)	(1,102)
Net cash provided by financing activities	121,985	189,993
Net decrease in cash, cash equivalents, and restricted cash	(15,414)	(115,217)
Cash, cash equivalents, and restricted cash, beginning of period	218,927	199,398
Cash, cash equivalents, and restricted cash, end of period	203,513	84,181
Supplemental cash flow disclosure
Cash paid for interest	12,256	6,509
Cash paid for taxes	21	0
Non-cash investing and financing activities
Asset retirement obligations	1,391	3,847
Debt assumed through acquisitions	0	8,100
Noncontrolling interest assumed through acquisitions	2,100	13,296
Redeemable noncontrolling interest assumed through acquisitions	0	8,100
Accrued distributions to noncontrolling interests	205	0
Accrued deferred financing costs	19	0
Acquisitions of property and equipment included in construction payable	0	10,872
Conversion of Alignment Shares into common stock	10	11
Deferred purchase price payable	$ 0	$ 7,069

XML

General

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

General

Company Overview

Altus Power, Inc., a Delaware corporation (the “Company” or “Altus Power”), headquartered in Stamford, Connecticut, develops, owns, constructs and operates large-scale roof, ground and carport-based photovoltaic solar energy generation and storage systems, for the purpose of producing and selling electricity to credit worthy counterparties, including commercial and industrial, public sector and community solar customers, under long-term contracts. The solar energy facilities are owned by the Company in project-specific limited liability companies (the “Solar Facility Subsidiaries”).

On December 9, 2021 (the “Closing Date”), the Company merged (the “Merger”) with CBRE Acquisition Holdings, Inc. (“CBAH”) and became listed on the New York Stock Exchange under the stock symbol "AMPS."

XML

Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The Company prepares its unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. The Company’s condensed consolidated financial statements include the results of wholly-owned and partially-owned subsidiaries in which the Company has a controlling interest. All intercompany balances and transactions have been eliminated in consolidation.

Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2023, filed with the Company’s 2023 annual report on Form 10-K on March 14, 2024, and the related notes which provide a more complete discussion of the Company’s accounting policies and certain other information. The information as of December 31, 2023, included in the condensed consolidated balance sheets was derived from the Company’s audited consolidated financial statements. The condensed consolidated financial statements were prepared on the same basis as the audited consolidated financial statements and reflect all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the Company’s financial position as of March 31, 2024, and the results of operations and cash flows for the three months ended March 31, 2024, and 2023. The results of operations for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected for the full year or any other future interim or annual period.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.

In recording transactions and balances resulting from business operations, the Company uses estimates based on the best information available. Estimates are used for such items as the fair value of net assets acquired in connection with accounting for business combinations, the useful lives of the solar energy facilities, and inputs and assumptions used in the valuation of asset retirement obligations (“AROs”), contingent consideration, derivative instruments, and Class B common stock, par value $0.0001 per share ("Alignment Shares").

Segment Information

Operating segments are defined as components of a company about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision makers is the chief executive officer. Based on the financial information presented to and reviewed by the chief operating decision makers in deciding how to allocate the resources and in assessing the performance of the Company, the Company has determined it operates as a single operating segment and has one reportable segment, which includes revenue under power purchase agreements, revenue from net metering credit agreements,

solar renewable energy credit revenue, rental income, performance based incentives and other revenue. The Company’s principal operations, revenue and decision-making functions are located in the United States.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents includes all cash balances on deposit with financial institutions and readily marketable securities with original maturity dates of three months or less at the time of acquisition and are denominated in U.S. dollars. Pursuant to the budgeting process, the Company maintains certain cash and cash equivalents on hand for possible equipment replacement related costs.

The Company records cash that is restricted as to withdrawal or use under the terms of certain contractual agreements as restricted cash. Restricted cash is included in current portion of restricted cash and restricted cash, noncurrent portion on the condensed consolidated balance sheets and includes cash held with financial institutions for cash collateralized letters of credit pursuant to various financing and construction agreements.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets. Cash, cash equivalents, and restricted cash consist of the following:

	As of March 31, 2024		As of December 31, 2023
Cash and cash equivalents	$	173,266	$	160,817
Current portion of restricted cash	17,622		45,358
Restricted cash, noncurrent portion	12,625		12,752
Total	$	203,513	$	218,927

Concentration of Credit Risk

The Company maintains its cash in bank deposit accounts which, at times, may exceed Federal Deposit Insurance Corporation insurance limits. The Company has not experienced any losses in such accounts and believes it is not exposed to any significant credit risk on cash balances.

The Company had no customers that individually accounted for over 10% of total accounts receivable, net as of March 31, 2024 and no customers that individually accounted over 10% of total operating revenues, net for the three months ended March 31, 2024.

The Company had no customers that individually accounted for over 10% of total accounts receivable, net as of December 31, 2023. The Company had one customer that individually accounted for over 10% (i.e., 15.0%) of total operating revenues, net for the three months ended March 31, 2023.

Accounting Pronouncements

As a public company, the Company is provided the option to adopt new or revised accounting guidance as an “emerging growth company” under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) either (1) within the same periods as those otherwise applicable to public business entities, or (2) within the same time periods as non-public business entities, including early adoption when permissible. The Company expects to elect to adopt new or revised accounting guidance within the same time period as non-public business entities, as indicated below.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments in this update require disclosure of incremental segment information and the title and position of the chief operating decision maker ("CODM"). Registrants will be required to disclose significant segment expenses that are regularly provided to the CODM, as well as additional information on segment profit and loss measures and how such information is used by the CODM to assess segment performance and allocate resources. This ASU is effective for annual periods beginning in January 2024 and interim periods beginning in January 2025. The Company is currently evaluating the impact of this ASU, but does not currently expect it to have a material impact on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update require enhanced income tax disclosures, particularly related to a reporting entity's effective tax rate reconciliation and income taxes paid. For the rate reconciliation table, the update requires additional categories of information about federal, state, and foreign taxes and details about significant reconciling items, subject to a quantitative threshold. Income taxes paid must be similarly disaggregated by federal, state, and foreign based on a quantitative threshold. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The guidance shall be applied on a prospective basis with the option to apply retrospectively. The Company will apply the guidance upon the effective date. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures.

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Revenue and Accounts Receivable

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue and Accounts Receivable

Revenue and Accounts Receivable

Disaggregation of Total Operating Revenues, net

The following table presents the detail of total operating revenues, net as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended March 31,
	2024		2023
Power sales under PPAs	$	12,625	$	8,986
Power sales under NMCAs	9,977		6,836
Power sales on wholesale markets	295		356
Total revenue from power sales	22,897		16,178
Solar renewable energy credit revenue	9,936		10,067
Rental income	2,085		626
Performance based incentives	4,807		2,098
Revenue recognized on contract liabilities	914		409
Other	20		—
Total operating revenues, net	$	40,659	$	29,378

Transaction price allocated to the remaining performance obligation

In accordance with optional exemptions available under Topic 606, the Company does not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less, (2) with the exception of fixed consideration, contracts for which revenue is recognized at the amount to which the Company have the right to invoice for goods provided and services performed, and (3) contracts for which variable consideration relates entirely to an unsatisfied performance obligation.

Contracts with fixed consideration consist primarily of performance obligations to supply fixed quantities of SRECs. Contracts with variable volumes and/or variable pricing, including those with pricing provisions tied to a consumer price or other index, have also been excluded as the related consideration under the contract is variable at inception of the contract. Most of the Company's solar renewable energy credit revenue is related to contracts with variable consideration.

The Company expects to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:

2024	$	14,958
2025	15,329
2026	11,498
2027	5,967
2028	1,029
Total	$	48,781

Accounts receivable

The following table presents the detail of receivables as recorded in accounts receivable in the unaudited condensed consolidated balance sheets:

	As of March 31, 2024		As of December 31, 2023
Power sales under PPAs	$	6,557	$	3,582
Power sales under NMCAs	9,896		8,094
Power sales on wholesale markets	63		249
Total power sales	16,516		11,925
Solar renewable energy credits	3,324		3,379
Rental income	134		450
Performance based incentives	83		1,346
Total	$	20,057	$	17,100

Payments for all accounts receivable in the above table are typically received within 30 days from invoicing. As of both March 31, 2024, and December 31, 2023, the Company determined that the allowance for credit losses is $0.9 million.

Contract liabilities

The Company recognizes contract liabilities related to long-term agreements to sell solar renewable energy credits ("SRECs") that are prepaid by customers before SRECs are delivered. The Company will recognize revenue associated with the contract liabilities as SRECs are delivered to customers through 2037. As of March 31, 2024, the Company had current and non-current contract liabilities of $2.8 million and $6.1 million, respectively. As of December 31, 2023, the Company had current and non-current contract liabilities of $2.9 million and $5.6 million, respectively. The Company does not have any other significant contract asset or liability balances related to revenues.

Rental income

Rental income is primarily derived from the master lease agreement with Vitol (as described in Note 5, "Acquisitions"), as well as long-term PPAs accounted for as operating leases under ASC 842. The Company's leases include various renewal options which are included in the lease term when the Company has determined it is reasonably certain of exercising the options based on consideration of all relevant factors that create an economic incentive for the Company as lessor. Certain leases include variable lease payments associated with production of solar facilities, which are recognized as rental income in period the energy is delivered. Maturities of fixed rental payments as of March 31, 2024, are as follows:

2024	$	6,803
2025	6,118
2026	2,892
2027	513
2028	514
Thereafter	5,255
Total	$	22,095

Revenue and Accounts Receivable

Revenue and Accounts Receivable

Disaggregation of Total Operating Revenues, net

The following table presents the detail of total operating revenues, net as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended March 31,
	2024		2023
Power sales under PPAs	$	12,625	$	8,986
Power sales under NMCAs	9,977		6,836
Power sales on wholesale markets	295		356
Total revenue from power sales	22,897		16,178
Solar renewable energy credit revenue	9,936		10,067
Rental income	2,085		626
Performance based incentives	4,807		2,098
Revenue recognized on contract liabilities	914		409
Other	20		—
Total operating revenues, net	$	40,659	$	29,378

Transaction price allocated to the remaining performance obligation

In accordance with optional exemptions available under Topic 606, the Company does not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less, (2) with the exception of fixed consideration, contracts for which revenue is recognized at the amount to which the Company have the right to invoice for goods provided and services performed, and (3) contracts for which variable consideration relates entirely to an unsatisfied performance obligation.

Contracts with fixed consideration consist primarily of performance obligations to supply fixed quantities of SRECs. Contracts with variable volumes and/or variable pricing, including those with pricing provisions tied to a consumer price or other index, have also been excluded as the related consideration under the contract is variable at inception of the contract. Most of the Company's solar renewable energy credit revenue is related to contracts with variable consideration.

The Company expects to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:

2024	$	14,958
2025	15,329
2026	11,498
2027	5,967
2028	1,029
Total	$	48,781

Accounts receivable

The following table presents the detail of receivables as recorded in accounts receivable in the unaudited condensed consolidated balance sheets:

	As of March 31, 2024		As of December 31, 2023
Power sales under PPAs	$	6,557	$	3,582
Power sales under NMCAs	9,896		8,094
Power sales on wholesale markets	63		249
Total power sales	16,516		11,925
Solar renewable energy credits	3,324		3,379
Rental income	134		450
Performance based incentives	83		1,346
Total	$	20,057	$	17,100

Payments for all accounts receivable in the above table are typically received within 30 days from invoicing. As of both March 31, 2024, and December 31, 2023, the Company determined that the allowance for credit losses is $0.9 million.

Contract liabilities

The Company recognizes contract liabilities related to long-term agreements to sell solar renewable energy credits ("SRECs") that are prepaid by customers before SRECs are delivered. The Company will recognize revenue associated with the contract liabilities as SRECs are delivered to customers through 2037. As of March 31, 2024, the Company had current and non-current contract liabilities of $2.8 million and $6.1 million, respectively. As of December 31, 2023, the Company had current and non-current contract liabilities of $2.9 million and $5.6 million, respectively. The Company does not have any other significant contract asset or liability balances related to revenues.

Rental income

Rental income is primarily derived from the master lease agreement with Vitol (as described in Note 5, "Acquisitions"), as well as long-term PPAs accounted for as operating leases under ASC 842. The Company's leases include various renewal options which are included in the lease term when the Company has determined it is reasonably certain of exercising the options based on consideration of all relevant factors that create an economic incentive for the Company as lessor. Certain leases include variable lease payments associated with production of solar facilities, which are recognized as rental income in period the energy is delivered. Maturities of fixed rental payments as of March 31, 2024, are as follows:

2024	$	6,803
2025	6,118
2026	2,892
2027	513
2028	514
Thereafter	5,255
Total	$	22,095

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Variable Interest Entities

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities

Variable Interest Entities

The Company consolidates all variable interest entities (“VIEs”) in which it holds a variable interest and is deemed to be the primary beneficiary of the variable interest entity. Generally, a VIE is an entity with at least one of the following conditions: (a) the total equity investment at risk is insufficient to allow the entity to finance its activities without additional subordinated financial support, or (b) the holders of the equity investment at risk, as a group, lack the characteristics of having a controlling financial interest. The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both 1) the power to direct the activities that most significantly impact the entity’s economic performance and 2) the obligations to absorb losses or receive benefits that could potentially be significant to the VIE.

The Company participates in certain partnership arrangements that qualify as VIEs. Consolidated VIEs consist primarily of tax equity financing arrangements and partnerships in which an investor holds a noncontrolling interest and does not have substantive kick-out or participating rights. The Company, through its subsidiaries, is the primary beneficiary of such VIEs, because as the manager, it has the power to direct the day-to-day operating activities of the entity. In addition, the Company is exposed to economics that could potentially be significant to the entity given its ownership interest and, therefore, has consolidated the VIEs as of March 31, 2024, and December 31, 2023. No VIEs were deconsolidated during the three months ended March 31, 2024 and 2023.

The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Company. In certain instances where the Company establishes a new tax equity structure, the Company is required to provide liquidity in accordance with the contractual agreements. The Company has no requirement to provide liquidity to purchase assets or guarantee performance of the VIEs unless further noted in the following paragraphs. The Company made certain contributions during the three months ended March 31, 2024 and 2023, as determined in the respective operating agreement.

The carrying amounts and classification of the consolidated VIE assets and liabilities included in condensed consolidated balance sheets are as follows:

	As of March 31, 2024		As of December 31, 2023
Current assets	$	25,201	$	22,298
Non-current assets	978,315		936,358
Total assets	$	1,003,516	$	958,656
Current liabilities	$	9,346	$	8,576
Non-current liabilities	159,151		141,360
Total liabilities	$	168,497	$	149,936

The amounts shown in the table above exclude intercompany balances which are eliminated upon consolidation. All of the assets in the table above are restricted for settlement of the VIE obligations, and all of the liabilities in the table above can only be settled using VIE resources.

The Company has not identified any VIEs during the three months ended March 31, 2024 and 2023, for which the Company determined that it is not the primary beneficiary and thus did not consolidate.

The Company considered qualitative and quantitative factors in determining which VIEs are deemed significant. As of March 31, 2024 and December 31, 2023, the Company consolidated thirty-six and thirty-five VIEs, respectively. No VIEs were deemed significant as of March 31, 2024 and December 31, 2023.

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Acquisitions

3 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Acquisitions

Acquisitions

2024 Acquisitions

Vitol Acquisition

On January 31, 2024, the Company, through its wholly-owned subsidiary, Altus Power, LLC, acquired an 84 MW portfolio of 20 operating solar energy facilities located across five US states (the “Vitol Acquisition”). The portfolio was acquired from Vitol Solar I LLC (“Vitol”) through an acquisition of 100% of the outstanding membership interests in 18 project companies and 100% of the outstanding Class B membership interest in a partnership which owns 2 project companies. The total purchase price was approximately $119.7 million and the transaction was entered into by the Company to grow its portfolio of solar energy facilities. The purchase price and associated transaction costs were funded by cash on hand. The purchase price is also subject to customary adjustments for working capital and other items.

In conjunction with the acquisition, the Company entered into a master lease agreement to lease certain solar facilities back to Vitol, as well as an asset management agreement under which the Company will manage the solar facilities during the term of the master lease agreement. The master lease agreement is accounted for as an operating lease under ASC 842 and lease payments are included in rental income within the condensed consolidated statement of operations. The lease term varies by solar facility, with individual lease terms ending between 2024 and 2026.

The Company accounted for the Vitol Acquisition under the acquisition method of accounting for business combinations. Under the acquisition method, the purchase price was allocated to the assets acquired and liabilities assumed on January 31, 2024 based on their estimated fair value. All fair value measurements of assets acquired and liabilities assumed, including the noncontrolling interests, were based on significant estimates and assumptions, including Level 3 (unobservable) inputs, which require judgment. Estimates and assumptions include the estimates of future power generation, commodity prices, operating costs, and appropriate discount rates.

The assets acquired and liabilities assumed are recognized provisionally on the consolidated balance sheet at their estimated fair values as of the acquisition date. The initial accounting for the business combination is not complete as the Company is in the process of obtaining additional information for the valuation of acquired tangible and intangible assets as well as inputs utilized in the valuation of noncontrolling interests. The provisional amounts are subject to change to the extent that additional information is obtained about the facts and circumstances that existed as of the acquisition date. Under U.S. GAAP, the measurement period shall not exceed one year from the acquisition date and the Company will finalize these amounts no later than January 31, 2025.

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on January 31, 2024:

Assets
Accounts receivable	$	1,649
Property, plant and equipment	123,363
Operating lease asset	7,835
Other assets	1,691
Total assets acquired	134,538
Liabilities
Accounts payable	249
Intangible liabilities	2,370
Asset retirement obligation	1,374
Operating lease liability	7,187
Contract liability	1,130
Other liabilities	393
Total liabilities assumed	12,703
Non-controlling interests	2,100
Total fair value of consideration transferred	$	119,735

The fair value of consideration transferred, net of cash acquired, as of January 31, 2024, is determined as follows:

Cash consideration paid to Vitol on closing	$	119,690
Post-closing purchase price true-up	45
Total fair value of consideration transferred	$	119,735

The Company incurred approximately $0.7 million of acquisition related costs related to the Vitol Acquisition, which are recorded as part of Acquisition and entity formation costs in the condensed consolidated statement of operations for the three months ended March 31, 2024. Acquisition related costs include legal, consulting, and other transaction-related costs.

The impact of the Vitol Acquisition on the Company's revenue and net income in the consolidated statement of operations was an increase of $2.0 million and $1.2 million, respectively, for the three months ended March 31, 2024.

Intangibles at Acquisition Date

The Company attributed the intangible liability values to unfavorable rate revenue contracts to sell power and SRECs. The following table summarizes the estimated fair values and the weighted average amortization periods of the assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Unfavorable rate revenue contracts – PPA	(100)	11 years
Unfavorable rate revenue contracts – SREC	(2,270)	9 years

Unaudited Pro Forma Combined Results of Operations

The following unaudited pro forma combined results of operations give effect to the Vitol Acquisition as if it had occurred on January 1, 2023. The unaudited pro forma combined results of operations are provided for informational purposes only and do not purport to represent the Company’s actual consolidated results of operations had the Vitol Acquisition occurred on the date assumed, nor are these financial statements necessarily indicative of the Company’s future consolidated results of operations.

The unaudited pro forma combined results of operations do not reflect the costs of any integration activities or any benefits that may result from operating efficiencies or revenue synergies.

	For the three months ended March 31, 2024 (unaudited)		For the three months ended March 31, 2023 (unaudited)
Operating revenues, net	$	41,281	$	31,474
Net income	4,866		3,722

Asset Acquisitions

During the three months ended March 31, 2024, the Company acquired a solar energy facility located in Massachusetts with a total nameplate capacity of 1.3 MW from a third party for a total purchase price of $4.0 million. The acquisition was accounted for as an acquisition of assets, whereby the Company acquired $4.0 million of property, plant and equipment and $0.6 million of operating lease assets, and assumed $0.6 million of operating lease liabilities. During the three months ended March 31, 2024, the Company also acquired land in Massachusetts from a third party for a total purchase price of $1.2 million.

2023 Acquisitions

Caldera Acquisition

On December 20, 2023, Altus Power, LLC, a wholly-owned subsidiary of the Company, acquired a 121 MW portfolio of 35 operating solar energy facilities located across six US states (the “Caldera Acquisition”). The portfolio was acquired from Project Hyperion Holdco LP (the “Seller”) for total consideration of $121.7 million. The purchase price and associated transaction costs were funded by the proceeds from an amendment of the APAF III Term Loan (as defined in Note 8, "Debt") and cash on hand. The Caldera Acquisition was made pursuant to the purchase and sale agreement (the "PSA") dated October 27, 2023, and entered into by the Company to grow its portfolio of solar energy facilities. Pursuant to the PSA, the Company acquired 100% ownership interest in Project Hyperion, LLC, a holding entity that owns the acquired solar energy facilities.

The Company accounted for the Caldera Acquisition under the acquisition method of accounting for business combinations. Under the acquisition method, the purchase price was allocated to the assets acquired and liabilities assumed on December 20, 2023, based on their estimated fair value. All fair value measurements of assets acquired and liabilities assumed, including the noncontrolling interests, were based on significant estimates and assumptions, including Level 3 (unobservable) inputs, which require judgment. Estimates and assumptions include the estimates of future power generation, commodity prices, operating costs, and appropriate discount rates.

The assets acquired and liabilities assumed are recognized provisionally on the consolidated balance sheet at their estimated fair values as of the acquisition date. The initial accounting for the business combination is not complete as the Company is in the process of obtaining additional information for the valuation of acquired tangible and intangible assets as well as inputs utilized in the valuation of noncontrolling interests. The provisional amounts are subject to change to the extent that additional information is obtained about the facts and circumstances that existed as of the acquisition date. Under U.S. GAAP, the measurement period shall not exceed one year from the acquisition date and the Company will finalize these amounts no later than December 20, 2024.

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on December 20, 2023:

	Provisional accounting as of December 20, 2023		Measurement period adjustments		Adjusted provisional accounting as of December 20, 2023
Assets
Accounts receivable	$	876	$	—	$	876
Property, plant and equipment	131,728		(223)		131,505
Intangible assets	350		—		350

Operating lease asset	15,557		—		15,557
Other assets	2,079		(95)		1,984
Total assets acquired	150,590		(318)		150,272
Liabilities
Intangible liabilities	5,200		—		5,200
Asset retirement obligation	1,920		—		1,920
Operating lease liability	17,567		—		17,567
Other liabilities	1,275		(244)		1,031
Total liabilities assumed	25,962		(244)		25,718
Non-controlling interests	2,900		—		2,900
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

The fair value of consideration transferred, net of cash acquired, as of December 20, 2023, is determined as follows:

Cash consideration paid to seller on closing	$	80,942	$	—	$	80,942
Cash consideration paid to settle debt on behalf of seller	38,966		—		38,966
Purchase price payable(1)	4,189		—		4,189
Contingent consideration payable	2,600		—		2,600
Total fair value of consideration transferred	126,697		—		126,697
Cash and restricted cash acquired	4,969		74		5,043
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

(1) The Company paid the entire purchase price payable amount after the acquisition date but prior to December 31, 2023.

The contingent consideration is related to the estimated earnout cash payment of a maximum of $8.0 million dependent on actual power generation of the acquired solar generating facilities during the 12-month period following the acquisition date. Refer to the Contingent Consideration section of Note 7, "Fair Value Measurements" for further information.

The Company incurred approximately $0.9 million of acquisition related costs related to the Caldera Acquisition, which are recorded as part of Acquisition and entity formation costs in the consolidated statement of operations for the year ended December 31, 2023. Acquisition related costs include legal, consulting, and other transaction-related costs.    

Intangibles at Acquisition Date

The Company attributed the intangible asset and liability values to favorable and unfavorable rate revenue contracts to sell SRECs. The following table summarizes the estimated fair values and the weighted average amortization periods of the acquired intangible assets and assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Favorable rate revenue contracts – SREC	350	4 years
Unfavorable rate revenue contracts – SREC	(5,200)	3 years

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Debt

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Debt

Debt

	As of March 31, 2024		As of December 31, 2023		Interest Type	Weighted average interest rate
Long-term debt
APAF Term Loan	$	471,466	$	474,609	Fixed	3.51	%
APAF II Term Loan	111,821		112,810		Floating*	SOFR + 1.475%
APAF III Term Loan	423,619		426,619		Fixed	6.03	%
APAF IV Term Loan	101,000		—		Fixed	6.45	%
APAGH Term Loan	100,000		100,000		Fixed	8.50	%
APAG Revolver	65,000		65,000		Floating	SOFR + 1.60%
APACF II Facility	31,868		—		Floating	SOFR + 3.25%
Other term loans	11,000		11,000		Fixed	3.04	%
Financing obligations recognized in failed sale leaseback transactions	42,850		42,767		Imputed	3.97	%
Total principal due for long-term debt	1,358,624		1,232,805
Unamortized discounts and premiums	(13,291)		(13,722)
Unamortized deferred financing costs	(18,085)		(16,165)
Less: Current portion of long-term debt	73,429		39,611
Long-term debt, less current portion	$	1,253,819	$	1,163,307

* Interest rate is effectively fixed by interest rate swap, see discussion below.

APAF Term Loan

On August 25, 2021, APA Finance, LLC (“APAF”), a wholly owned subsidiary of the Company, entered into a $503.0 million term loan facility with Blackstone Insurance Solutions (“BIS”) through a consortium of lenders, which consists of investment grade-rated Class A and Class B notes (the “APAF Term Loan”). The APAF Term Loan has a weighted average 3.51% annual fixed rate and matures on February 29, 2056 (“Final Maturity Date”).

The APAF Term Loan amortizes at an initial rate of 2.5% of outstanding principal per annum for a period of 8 years at which point the amortization steps up to 4% per annum until September 30, 2031 (“Anticipated Repayment Date”). After the Anticipated Repayment Date, the loan becomes fully-amortizing, and all available cash is used to pay down principal until the Final Maturity Date. The APAF Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF Term Loan was $471.5 million less unamortized debt discount and loan issuance costs totaling $6.5 million. As of December 31, 2023, the outstanding principal balance of the APAF Term Loan was $474.6 million less unamortized debt discount and loan issuance costs totaling $6.7 million.

As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF Term Loan.

APAF II Term Loan

On December 23, 2022, APA Finance II, LLC (“APAF II”), a wholly owned subsidiary of the Company, entered into a $125.7 million term loan facility (the “APAF II Term Loan”) with KeyBank National Association ("KeyBank") and The Huntington Bank ("Huntington") as lenders. The proceeds of the APAF II Term Loan were used to repay the outstanding amounts under certain project-level loans. The APAF II Term Loan matures on December 23, 2027, and has a variable interest rate based on the Secured Overnight Financing Rate (“SOFR”) plus a spread of 1.475%. Simultaneously with entering into the APAF II Term Loan, the Company entered into interest rate swaps for 100% of the amount of debt outstanding, which effectively fixed the interest rate at 4.885% (see Note 7, "Fair Value Measurements," for further details). The APAF II Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF II Term Loan was $111.8 million, less unamortized debt issuance costs of $2.0 million. As of December 31, 2023, the outstanding principal balance of the APAF II Term Loan was $112.8 million, less unamortized debt issuance costs of $2.2 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAF II Term Loan.

APAF III Term Loan

On February 15, 2023, the Company, through its subsidiaries, APA Finance III Borrower, LLC (the “APAF III Borrower”) and APA Finance III Borrower Holdings, LLC (“Holdings”), entered into a new long-term funding facility under the terms of a credit agreement among the APAF III Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF III Term Loan”).

This funding facility provides for a term loan of $204.0 million at a fixed rate of 5.62%. The APAF III Term Loan amortizes at a rate of 2.5% of initial outstanding principal until the anticipated repayment date of June 30, 2033. The maturity date of the term loan is October 31, 2047. Upon lender approval, the APAF III Borrower has the right to increase the funding facility to make additional draws for certain solar generating facilities, as set forth in the credit agreement. On February 15, 2023, the Company borrowed $193.0 million from this facility to fund the True Green II Acquisition and the associated costs and expenses. The principal balance borrowed under the APAF III Term Loan was offset by $4.0 million of debt issuance costs and $6.3 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033. The APAF III Term Loan is secured by membership interests in the Company's subsidiaries.

On June 15, 2023 and July 21, 2023, the Company amended the APAF III Term Loan to add $47.0 million and $28.0 million of additional borrowings, respectively, the proceeds of which were used to repay outstanding term loans under the Construction to Term Loan Facility (as defined below), and to provide long-term financing for new solar projects. The principal balance borrowed under the amendments was offset by $0.3 million and $0.2 million of issuance costs, respectively, and $1.5 million and $1.1 million of issuance discount, respectively, which have been deferred and will be recognized as interest expense through June 30, 2033.

On December 20, 2023, the Company amended the APAF III Term Loan to add $163.0 million of additional borrowings, the proceeds of which were used to fund the Caldera Acquisition. The amendment increased the weighted average fixed interest rate for all borrowings under the APAF III Term Loan to 6.03%, and increased the rate of amortization for the new borrowings under the amendment to 3.25% per annum until June 30, 2033. The principal balance borrowed under the amendment was offset by $1.3 million of issuance costs and $0.8 million of issuance discount, which have been deferred and will be recognized as interest expense through June 30, 2033.

As of March 31, 2024, the outstanding principal balance of the APAF III Term Loan was $423.6 million, less unamortized debt issuance costs and discount of $14.0 million. As of December 31, 2023, the outstanding principal balance of the APAF III Term Loan was $426.6 million, less unamortized debt issuance costs and discount of $14.3 million. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

APAF IV Term Loan

On March 26, 2024, the Company, through its subsidiaries, APA Finance IV, LLC (the “APAF IV Borrower”), and APA Finance IV Holdings, LLC (“Holdings”) has entered into a new term loan facility under the terms of a credit agreement among the APAF IV Borrower, Holdings, Blackstone Asset Based Finance Advisors LP, which is an affiliate of the Company, U.S. Bank Trust Company, N.A., as administrative agent, U.S. Bank N.A., as document custodian, and the lenders party thereto (the “APAF IV Term Loan”).

The APAF IV Term Loan, which matures on March 26, 2049, bears interest at a fixed rate of 6.45% per annum on outstanding principal amounts under the term loan. The Term Loan Facility has an anticipated repayment date of June 30, 2034. Upon lender approval, the APAF IV Borrower has the right to increase the Term Loan Facility to make additional draws for certain acquisitions of solar assets that otherwise satisfy the criteria for permitted acquisitions, as defined in the credit agreement. On March 26, 2024, the Company borrowed $101.0 million under the APAF IV Term Loan in connection with the Vitol Acquisition, which closed on January 31, 2024. The principal balance borrowed under the APAF IV Term Loan was offset by

$1.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through June 30, 2034. The APAF IV Term Loan is secured by membership interests in the Company's subsidiaries.

As of March 31, 2024, the outstanding principal balance of the APAF IV Term Loan was $101.0 million, less unamortized debt issuance costs and discount of $1.6 million. As of March 31, 2024, the Company was in compliance with all covenants under the APAF IV Term Loan.

APAGH Term Loan

On December 27, 2023, APA Generation Holdings, LLC (“APAGH” or the “APAGH Borrower”), a wholly owned subsidiary of the Company, entered into a credit agreement (the “APAGH Term Loan”) with an affiliate of Goldman Sachs Asset Management and CPPIB Credit Investments III Inc., a subsidiary of Canada Pension Plan Investment Board, as “Lenders.” The total commitment under the credit agreement is $100.0 million. The Company can also allow for the funding of additional incremental loans in an amount not to exceed $100.0 million over the term of the credit agreement at the discretion of the Lenders. Subject to certain exceptions, the APAGH Borrower’s obligations to the Lenders are secured by the assets of the APAGH Borrower, its parent, Altus Power, LLC (“Holdings”) and the Company and are further guaranteed by Holdings and the Company.

Interest accrues on any outstanding balance at an initial fixed rate equal to 8.50%, subject to adjustments. The maturity date of the term loan is December 27, 2029.

On December 27, 2023, the Company borrowed $100.0 million under the APAGH Term Loan to fund future growth needs, which was partially offset by $3.0 million of issuance discount. The Company incurred $1.0 million of debt issuance costs related to the APAGH Term Loan, which have been deferred and will be recognized as interest expense through December 27, 2029.

As of March 31, 2024, the outstanding principal balance of the APAGH Term Loan was $100.0 million, less unamortized debt issuance costs of $3.8 million. As of December 31, 2023, the outstanding principal balance of the APAGH Term Loan was $100.0 million, less unamortized debt issuance costs and discount of $4.0 million. As of March 31, 2024 and December 31, 2023, the Company was in compliance with all covenants.

APAG Revolver

On December 19, 2022, APA Generation, LLC (“APAG”), a wholly owned subsidiary of the Company, entered into revolving credit facility with Citibank, N.A. with a total committed capacity of $200.0 million (the "APAG Revolver"). Outstanding amounts under the APAG Revolver have a variable interest rate based on a base rate and an applicable margin. The APAG Revolver is secured by membership interests in the Company's subsidiaries. The APAG Revolver matures on December 19, 2027. As of March 31, 2024, and December 31, 2023, there was $65.0 million outstanding under the APAG Revolver. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants under the APAG Revolver.

APACF II Facility

On November 10, 2023, APACF II, LLC (“APACF II” or the “APACF II Borrower”) a wholly-owned subsidiary of the Company, entered into a credit agreement among the APACF II Borrower, APACF II Holdings, LLC, Pass Equipment Co., LLC, each of the project companies from time to time party thereto, each of the tax equity holdcos from time to time party thereto, U.S. Bank Trust Company, National Association, U.S. Bank National Association, each lender from time to time party thereto (collectively, the “Lenders”) and Blackstone Asset Based Finance Advisors LP, as Blackstone representative (“APACF II Facility”).

The aggregate amount of the commitments under the credit agreement is $200.0 million. The APACF II Facility matures on November 10, 2027, and bears interest at an annual rate of SOFR plus 3.25%. Borrowings under the APACF II Facility, which mature 364 days after the borrowing occurs, may be used by the APACF II Borrower to fund construction costs including equipment, labor, interconnection, as well as other development costs. The Company incurred $0.3 million of debt issuance costs related to the APACF II Facility, which have been deferred and will be recognized as interest expense through November 10, 2027. On January 19, 2024, the Company borrowed $31.9 million under the APACF II Facility, which was

offset by $0.6 million of debt issuance costs, which have been deferred and will be recognized as interest expense through November 10, 2027. The APACF II Facility is secured by membership interests in the Company's subsidiaries and other collateral, including equipment.

As of March 31, 2024, the outstanding principal balance of the APACF II Facility was $31.9 million, less unamortized debt issuance costs of $0.9 million. As of December 31, 2023, no amounts were outstanding under the APACF II Facility. As of March 31, 2024, the Company was in compliance with all covenants under the APACF II Facility.

Other Term Loans - Construction to Term Loan Facility

On January 10, 2020, APA Construction Finance, LLC (“APACF”) a wholly-owned subsidiary of the Company, entered into a credit agreement with Fifth Third Bank, National Association and Deutsche Bank AG New York Branch to fund the development and construction of future solar facilities (“Construction Loan to Term Loan Facility”). The Construction Loan to Term Loan Facility included a construction loan commitment of $187.5 million, which expired on January 10, 2023. The construction loan commitment can convert to a term loan upon commercial operation of a particular solar energy facility. On June 15, 2023, the Company repaid all outstanding term loans of $15.8 million and terminated the facility.

Other Term Loans - Project-Level Term Loan

In conjunction with an acquisition of assets on August 29, 2022, the Company assumed a project-level term loan with an outstanding principal balance of $14.1 million and a fair value discount of $2.2 million. The term loan is subject to scheduled semi-annual amortization and interest payments, and matures on September 1, 2029.

As of March 31, 2024, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.7 million. As of December 31, 2023, the outstanding principal balance of the term loan is $11.0 million, less unamortized debt discount of $1.8 million.

The term loan is secured by an interest in the underlying solar project assets and the revenues generated by those assets. As of March 31, 2024, and December 31, 2023, the Company was in compliance with all covenants.

Letter of Credit Facilities and Surety Bond Arrangements

The Company enters into letters of credit and surety bond arrangements with lenders, local municipalities, government agencies, and land lessors. These arrangements relate to certain performance-related obligations and serve as security under the applicable agreements. As of March 31, 2024, the Company had $52.3 million of letters of credit outstanding and $51.1 million of unused capacity. As of December 31, 2023, the Company had $54.7 million of letters of credit outstanding and $54.4 million of unused capacity. Additionally, as of March 31, 2024 and December 31, 2023, the Company had outstanding surety bonds of $5.9 million and $5.4 million, respectively.

To the extent liabilities are incurred as a result of the activities covered by the letters of credit or surety bonds, such liabilities are included on the accompanying condensed consolidated balance sheets. From time to time, the Company is required to post financial assurances to satisfy contractual and other requirements generated in the normal course of business. Some of these assurances are posted to comply with federal, state or other government agencies’ statutes and regulations. The Company sometimes uses letters of credit to satisfy these requirements and these letters of credit reduce the Company’s borrowing facility capacity.

Financing Obligations Recognized in Failed Sale Leaseback Transactions

From time to time, the Company sells equipment to third parties and enters into master lease agreements to lease the equipment back for an agreed-upon term. The Company has assessed these arrangements and determined that the transfer of assets should not be accounted for as a sale in accordance with ASC 842. Therefore, the Company accounts for these transactions using the financing method by recognizing the consideration received as a financing obligation, with the assets subject to the transaction remaining on the balance sheet of the Company and depreciated based on the Company's normal depreciation policy. The aggregate proceeds have been recorded as long-term debt within the condensed consolidated balance sheets.

As of March 31, 2024, the Company's recorded financing obligations were $41.9 million, net of $0.9 million of deferred transaction costs. As of December 31, 2023, the Company's recorded financing obligations were $41.8 million, net of $0.9

million of deferred transaction costs. Payments of $0.3 million and $0.2 million were made under financing obligations for the three months ended March 31, 2024, and 2023, respectively. Interest expense, inclusive of the amortization of deferred transaction costs for the three months ended March 31, 2024 and 2023, was $0.4 million.

During the three months ended March 31, 2023, the Company paid $0.5 million to extinguish financing obligations of $0.6 million, resulting in a gain on extinguishment of debt of $0.1 million. During the three months ended March 31, 2024, the Company extinguished no financing obligations.

The table below shows the payments required under the failed sale-leaseback financing obligations for the years ended:

2024	$	2,788
2025	3,023
2026	2,995
2027	2,986
2028	2,967
Thereafter	14,143
Total	$	28,902

The difference between the outstanding financing obligation of $42.9 million and $28.9 million of contractual payments due, including residual value guarantees, is due to $13.2 million of investment tax credits claimed by the respective counterparties, less $2.6 million of the implied interest on financing obligations included in minimum lease payments. The remaining difference is due to $3.8 million of interest accrued and a $0.4 million difference between the required contractual payments and the fair value of financing obligations acquired.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company measures certain assets and liabilities at fair value, which is defined as the price that would be received from the sale of an asset or paid to transfer a liability (i.e., an exit price) on the measurement date in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. Our fair value measurements use the following hierarchy, which prioritizes valuation inputs based on the extent to which the inputs are observable in the market.

•Level 1 - Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.

•Level 2 - Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs are observable in active markets are Level 2 valuation techniques.

•Level 3 - Valuation techniques in which one or more significant inputs are unobservable. Such inputs reflect our estimate of assumptions that market participants would use to price an asset or liability.

The Company holds various financial instruments that are not required to be recorded at fair value. For cash, restricted cash, accounts receivable, accounts payable, and short-term debt, the carrying amounts approximate fair value due to the short maturity of these instruments.

The following table provides the financial instruments measured at fair value on a recurring basis:

	March 31, 2024
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market fund	$	62,695	$	—	$	—	$	62,695
Derivative assets:
Interest rate swaps	$	—	$	2,585	$	—	$	2,585
Total assets at fair value	62,695		2,585		—		65,280
Liabilities
Alignment Shares liability	—		—		34,415		34,415
Other long-term liabilities:
True Green II Acquisition - contingent liability	—		—		4,880		4,880
Caldera Acquisition - contingent liability	—		—		2,300		2,300
Total liabilities at fair value	—		—		41,595		41,595

	December 31, 2023
	Level 1	Level 2	Level 3	Total
Assets
Derivative assets:
Interest rate swaps	—	530	—	530
Total assets at fair value	—	530	—	530
Liabilities
Alignment Shares liability	—	—	60,502	60,502
Other long-term liabilities:
True Green II Acquisition - contingent liability	—	—	4,658	4,658
Caldera Acquisition - contingent liability	—	—	2,600	2,600
Total liabilities at fair value	—	—	67,760	67,760

Alignment Shares Liability

As of March 31, 2024, the Company had 796,950 Alignment Shares outstanding, all of which are held by CBRE Acquisition Sponsor, LLC (the "Sponsor"), certain former officers of CBAH (such officers, together with the Sponsor, the “Sponsor Parties”) and former CBAH directors. The Alignment Shares will automatically convert into shares of Class A common stock based upon the Total Return (as defined in Exhibit 4.4 to our 2022 Annual Report on Form 10-K) on the Class A common stock as of the relevant measurement date over each of the seven fiscal years following the Merger.

Upon the consummation of the Merger, Alignment Shares have no continuing service requirement and do not create an unconditional obligation requiring the Company to redeem the instruments by transferring assets. In addition, the shares convert to a variable number of Class A common stock depending on the trading price of the Class A common stock and dividends paid/payable to the holders of Class A common stock. Therefore, the shares do not represent an obligation or a conditional obligation to issue a variable number of shares with a monetary value based on any of the criteria in ASC 480, Distinguishing

Liabilities From Equity. The Company determined that the Alignment Shares meet the definition of a derivative because they contain (i) an underlying (Class A common stock price), (ii) a notional amount (a fixed number of Class B common stock), (iii) no or minimal initial net investment (the Sponsor paid a de minimis amount which is less than the estimated fair value of the shares), and (iv) net settleable through a conversion of the Alignment Shares into Class A shares. As such, the Company concluded that the Alignment Shares meet the definition of a derivative, which will be presented at fair value each reporting period, with changes in fair value recorded through earnings.

The Company estimates the fair value of outstanding Alignment Shares using a Monte Carlo simulation valuation model utilizing a distribution of potential outcomes based on a set of underlying assumptions such as stock price, volatility, and risk-free interest rate. As volatility of 70% and risk-free interest rate of 4.31% are not observable inputs, the overall fair value measurement of Alignment Shares is classified as Level 3. Unobservable inputs can be volatile and a change in those inputs might result in a significantly higher or lower fair value measurement of Alignment Shares.

	For the three months ended March 31, 2024			For the three months ended March 31, 2023
	Shares	$		Shares	$
Beginning balance	996,188	$	60,502	1,207,500	$	66,145
Alignment Shares converted	(199,238)	(10)		(201,250)	(11)
Fair value remeasurement	—	(26,077)		—	(17,018)
Ending balance	796,950	$	34,415	1,006,250	$	49,116

Interest Rate Swaps

The Company's derivative instruments consist of interest rate swaps that are not designated as cash flow hedges or fair value hedges under accounting guidance. The Company uses interest rate swaps to manage its net exposure to interest rate changes. These instruments are custom, over-the-counter contracts with various bank counterparties that are not traded on an active market but valued using readily observable market inputs and the overall fair value measurement is classified as Level 2. As of March 31, 2024 and December 31, 2023, the notional amounts were $118.8 million and $112.8 million, respectively. For the three months ended March 31, 2024 and 2023, the change in fair value of interest rate swaps resulted in a gain of $2.1 million and a gain of $2.7 million, respectively, which was recorded as interest expense in the condensed consolidated statements of operations.

Forward Starting Interest Rate Swap

The Company entered into a forward starting interest rate swap on January 31, 2023, with an effective date of January 31, 2025, and a termination date of January 31, 2035. This transaction had a notional amount of $250.0 million, was designated as a cash flow hedge of the Company's forecasted fixed-rate or floating-rate debt issuances.

Later in 2023, the Company terminated the forward starting interest rate swap for total cash proceeds of $16.7 million. The total gain of $17.3 million, was recorded as a component of Other comprehensive income in the condensed consolidated statements of comprehensive income for the year ended December 31, 2023. The Company allocated $238.0 million of the notional amount to the incremental debt issuances under the APAF III Term Loan and $12.0 million to the APAF IV Term Loan.

Other comprehensive income of $17.3 million associated with the incremental debt issuances under the APAF III Term Loan and APAF IV Term Loan is recognized as an adjustment to interest expense, net over the term of the debt. For the three months ended March 31, 2024, the adjustment to Interest expense, net was $0.4 million. Approximately $1.6 million of the gain in other comprehensive income will be reclassified into earnings during the next 12 months.

The cash flow hedge was determined to be fully effective during the three months ended March 31, 2024. As such, no amount of ineffectiveness has been included in net income. The amount included in other comprehensive income will be reclassified to current earnings should all or a portion of the hedge no longer be considered effective. The Company expects the hedge to remain fully effective during the remaining term of the swap.

Contingent Consideration

Caldera Acquisition

In connection with the Caldera Acquisition on December 20, 2023, contingent consideration of $8.0 million may be payable upon achieving certain power volumes generated by the acquired solar energy facilities. The Company estimated the fair value of contingent consideration for future earnout payments using a Monte Carlo simulation model. Significant assumptions used in the measurement include the estimated volumes of power generation of acquired solar energy facilities during the 12-month period since the acquisition date and the risk-adjusted discount rate associated with the business. As the inputs are not

observable, the overall fair value measurement of the contingent consideration is classified as Level 3. As of March 31, 2024 and December 31, 2023, the fair value of the contingent consideration was $2.3 million and $2.6 million, respectively, and was included in Other current liabilities in the condensed consolidated balance sheets. For the three months ended March 31, 2024, the Company recorded a gain on remeasurement of contingent liability of $0.3 million.

True Green II Acquisition

In connection with the acquisition of a portfolio of 58 solar energy facilities with a combined nameplate capacity of 220 MW on February 15, 2023 (the "True Green II acquisition"), contingent consideration of $10.0 million may be payable upon the seller's completion of in-development solar energy facilities and the Company obtaining tax equity financing. The Company estimated the fair value of the contingent consideration by using the expected cash flow approach. These cash flows were then discounted to present value using the risk-adjusted discount rate associated with the business. As the inputs are not observable, the overall fair value measurement of the contingent consideration is classified as Level 3. As of March 31, 2024 and December 31, 2023, the fair value of the contingent consideration was $4.9 million and $4.7 million, respectively, and was included in Other current liabilities in the condensed consolidated balance sheets. For the three months ended March 31, 2024, the Company recorded $0.2 million loss on fair value remeasurement of contingent liability associated with the True Green II Acquisition in the condensed consolidated statements of operations. The loss was recorded due to the remeasurement of the contingent liability based on the actual amount of tax equity financing received.

Solar Acquisition

In connection with the acquisition of a portfolio of sixteen solar energy facilities with a combined nameplate capacity of 61.5 MW on December 22, 2020 (the "Solar Acquisition"), contingent consideration of $3.1 million may be payable upon achieving certain market power rates and $7.4 million upon achieving certain power volumes generated by the acquired solar energy facilities. The Company estimated the fair value of the contingent consideration for future earnout payments using a Monte Carlo simulation model. Significant assumptions used in the measurement include the estimated volumes of power generation of acquired solar energy facilities during the 18-36-month period since the acquisition date, market power rates during the 36-month period, and the risk-adjusted discount rate associated with the business. As the inputs are not observable, the overall fair value measurement of the contingent consideration is classified as Level 3.

The liability for the contingent consideration associated with production volumes expired on June 30, 2022. The liability for the contingent consideration associated with power rates is included in Other long-term liabilities in the condensed consolidated balance sheets at the estimated fair value of $3.1 million as of March 31, 2024 and December 31, 2023. For the three months ended March 31, 2024 and 2023, the Company recorded a loss on fair value remeasurement of contingent consideration associated with power rates of zero and $0.1 million, respectively, within operating income in the condensed consolidated statements of operations. Gains and losses are recorded due to changes in significant assumptions used in the measurement, including the actual versus estimated volumes of power generation of acquired solar energy facilities and market power rates. As of December 31, 2023, the 36-month measurement period for the contingent liability associated with market power rates has ended and the contingency was resolved with $3.1 million payable in 2024.

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Equity

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Equity

Equity

As of March 31, 2024, the Company had 988,591,250 authorized and 159,874,981 issued and outstanding shares of Class A common stock. As of December 31, 2023, the Company had 988,591,250 authorized and 158,999,886 issued and outstanding shares of Class A common stock, respectively. Class A common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the Company’s board of directors. As of March 31, 2024, and December 31, 2023, no common stock dividends have been declared.

As of March 31, 2024, and December 31, 2023, the Company had 796,950 and 996,188 authorized and issued shares of Class B common stock, respectively, also referred to as the Alignment Shares. Refer to Note 7, "Fair Value Measurements," for further details.

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Redeemable Noncontrolling Interests

3 Months Ended

Mar. 31, 2024

Noncontrolling Interest [Abstract]

Redeemable Noncontrolling Interests

Redeemable Noncontrolling Interests

The changes in the components of redeemable noncontrolling interests are presented in the table below:

	For the three months ended March 31,
	2024		2023
Redeemable noncontrolling interest, beginning balance	$	26,044	$	18,133
Cash distributions	(571)		(576)
Accrued distributions	(206)		—
Redemption of redeemable noncontrolling interests	—		(2,175)
Assumed redeemable noncontrolling interest through business combination	—		8,100
Net (loss) income attributable to redeemable noncontrolling interest	(878)		861
Redeemable noncontrolling interest, ending balance	$	24,389	$	24,343

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Leases

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Leases

Leases

The following table presents the components of operating lease cost for the three months ended March 31, 2024, and 2023:

	For the three months ended March 31,
	2024		2023
Operating lease expense	$	4,069	$	2,391
Variable lease expense	418		357
Total lease expense	$	4,487	$	2,748

The following table presents supplemental information related to our operating leases:

	For the three months ended March 31,
	2024		2023
Operating cash flows from operating leases	$	4,064	$	2,238
Operating lease assets obtained in exchange for new operating lease liabilities	$	11,891	$	32,722
Weighted average remaining lease term, years	23.6 years		22.0 years
Weighted average discount rate	5.75%		5.15%

Maturities of operating lease liabilities as of March 31, 2024, are as follows:

2024	$	12,143
2025	15,829
2026	15,952
2027	16,048
2028	16,100
Thereafter	294,720
Total	$	370,792
Less: Present value discount	(175,363)
Lease liability	$	195,429

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Legal

The Company is a party to a number of claims and governmental proceedings which are ordinary, routine matters incidental to its business. In addition, in the ordinary course of business the Company periodically has disputes with vendors and customers. The outcomes of these matters are not expected to have, either individually or in the aggregate, a material adverse effect on the Company’s financial position or results of operations.

Performance Guarantee Obligations

The Company guarantees certain specified minimum solar energy production output under the Company’s power purchase agreements ("PPAs"), generally over a term of 10, 15 or 25 years. The solar energy systems are monitored to ensure these outputs are achieved. The Company evaluates if any amounts are due to customers based upon not meeting the guaranteed solar energy production outputs at each reporting period end. As of March 31, 2024, and December 31, 2023, the guaranteed minimum solar energy production has been met and the Company has recorded no performance guarantee obligations.

Purchase Commitments

In the ordinary course of business, the Company makes various commitments to purchase goods and services from specific suppliers. As of March 31, 2024, and December 31, 2023, the Company had zero outstanding non-cancellable commitments to purchase solar modules.

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Related Party Transactions

3 Months Ended

Mar. 31, 2024

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

There was $0.1 million and $0.1 million due to related parties, as discussed below, and no amounts due from related parties as of March 31, 2024, and December 31, 2023, respectively. Additionally, in the normal course of business, the Company conducts transactions with affiliates, including:

Blackstone Credit Facilities

Under the APAF Term Loan, APAF III Term Loan, APAF IV Term Loan, and APACF II Facility, subsidiaries of The Blackstone Group (“Blackstone”), a related party, serve as agents between the Company and a consortium of third-party lenders. See Note 6, "Debt" for further details.

During the three months ended March 31, 2024 and 2023, the Company paid $0.2 million and $0.7 million, respectively, of loan issuance costs to Blackstone.

Commercial Collaboration Agreement with CBRE

In connection with the Merger, the Company and CBRE entered into a commercial collaboration agreement (the “Commercial Collaboration Agreement”) effective upon the Merger, pursuant to which, among other things, CBRE will invite the Company to join CBRE’s strategic supplier program and CBRE will promote the Company as its preferred clean energy renewable provider/partner, CBRE and the Company will create a business opportunity referral program with CBRE’s brokers, CBRE will reasonably collaborate with the Company to develop and bring to market new products and/or bundles for Company’s customers, the Company will consider in good faith inviting CBRE to become a solar tax equity partner for the Company, on a non-exclusive basis, on market terms to be mutually agreed and CBRE will provide, at no cost to the Company, reasonable access to data-driven research and insights prepared by CBRE (subject to certain exceptions). The Commercial Collaboration Agreement continues for a period of seven years, with automatic one-year renewal period, unless earlier terminated by either party in accordance with the terms set forth therein.

On December 9, 2022, the Company amended the Commercial Collaboration Agreement to update the business arrangement and associated fee approach, which provides that CBRE employees, including brokers, non-brokers and other employees who partnered with the Company to bring clean electrification solutions to CBRE’s client base, who met certain minimum criteria (“Qualified Referral”) and who documented such Qualified Referral via an executed Development Agreement, would receive a development fee of between $0.015/watt to $0.030/watt depending on the business segment and teams of such CBRE employees. For the three months ended March 31, 2024 and 2023, the Company did not incur any costs associated with the Commercial Collaboration Agreement. As of March 31, 2024 and December 31, 2023, there were no amounts due to CBRE associated with the Commercial Collaboration Agreement.

Master Services Agreement with CBRE

On June 13, 2022, the Company, through its wholly-owned subsidiary, entered into a Master Services Agreement ("MSA") with CBRE under which CBRE assists the Company in developing solar energy facilities. For the three months ended March 31, 2024 and 2023, the Company incurred $0.2 million and $0.1 million, respectively, for development services provided under the PSA. As of March 31, 2024, and December 31, 2023, there was $0.1 million due to CBRE for development services provided under the MSA.

Lease Agreements with Link Logistics and CBRE

The Company has a right to use rooftops to develop and operate solar facilities under lease agreements with subsidiaries of Link Logistics Real Estate Management LLC (“Link Logistics”), a Blackstone portfolio company, and subsidiaries of CBRE. As of March 31, 2024, and December 31, 2023, the Company recognized operating lease assets and operating lease liabilities of $27.1 million and $24.3 million, respectively, in the condensed consolidated balance sheet related to these leases, which have a weighted average remaining lease term of 29 years. During the three months ended March 31, 2024 and 2023, payments made under these leases were $0.7 million and zero, respectively.

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Earnings per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings per Share

Earnings per Share

The calculation of basic and diluted earnings per share for the three months ended March 31, 2024 and 2023 was as follows (in thousands, except share and per share amounts):

	For the three months ended March 31,
	2024		2023
Net income attributable to Altus Power, Inc.	7,509		5,617
Income attributable to participating securities(1)	(38)		(36)
Net income attributable to common stockholders - basic and diluted	7,471		5,581
Class A Common Stock
Weighted average shares of common stock outstanding - basic(2)	159,025,740		158,621,674
Dilutive restricted stock	—		258,789
Dilutive RSUs	3,216,408		2,120,928
Dilutive conversion of Alignment Shares	—		2,011
Weighted average shares of common stock outstanding - diluted	162,242,148		161,003,402
Net income attributable to common stockholders per share - basic	$	0.05	$	0.04
Net income attributable to common stockholders per share - diluted	$	0.05	$	0.03

(1) Represents the income attributable to 796,950 and 1,006,250 Alignment Shares outstanding as of March 31, 2024 and 2023, respectively.

(2) For the three months ended March 31, 2023, the calculation of basic weighted average shares of common stock outstanding excludes 271,259 shares of the Company's Class A common stock provided to holders of the common stock of the Company prior to the Merger, including shares that were subject to vesting conditions.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The Company recognized $4.3 million and $2.9 million of stock-based compensation expense for the three months ended March 31, 2024, and 2023, respectively. As of March 31, 2024, the Company had $46.9 million of unrecognized share-based compensation expense related to unvested restricted units, respectively, which the Company expects to recognize over a weighted average period of approximately 2 years.

Legacy Incentive Plans

Prior to the Merger, Legacy Altus maintained the APAM Holdings LLC Restricted Units Plan, adopted in 2015 (the “APAM Plan”) and APAM Holdings LLC adopted the 2021 Profits Interest Incentive Plan (the “Holdings Plan”, and together with the APAM Plan, the “Legacy Incentive Plans”), which provided for the grant of restricted units that were intended to qualify as profits interests to employees, officers, directors and consultants. In connection with the Merger, vested restricted units previously granted under the Legacy Incentive Plans were exchanged for shares of Class A Common Stock, and unvested Altus Restricted Shares under each of the Legacy Incentive Plans were exchanged for restricted Class A Common Stock with the same vesting conditions. As of March 31, 2024, and December 31, 2023, zero and 210,710 shares of Class A Common Stock were restricted under the Holdings Plan, respectively. No further awards will be made under the Legacy Incentive Plans.

The fair value of the granted units was determined using the Black-Scholes Option Pricing model and relied on assumptions and inputs provided by the Company. All option models utilize the same assumptions with regard to (i) current valuation, (ii) volatility, (iii) risk-free interest rate, and (iv) time to maturity. The models, however, use different assumptions with regard to the strike price which vary by award.

Omnibus Incentive Plan

On July 12, 2021, the Company entered into the Management Equity Incentive Letter with each of Mr. Felton and Mr. Norell pursuant to which, on February 5, 2022, the compensation committee granted to Mr. Felton and Mr. Norell, together with other senior executives, including Mr. Savino, Chief Construction Officer, and Mr. Weber, Chief Financial Officer, restricted stock units (“RSUs”) under the Omnibus Incentive Plan (the "Incentive Plan") that are subject to time-based and, for the named executive officers and certain other executives, eighty percent (80%) of such RSUs also further subject to performance-based vesting, with respect to an aggregate five percent (5%) of the Company’s Class A common stock on a fully diluted basis, excluding the then-outstanding shares of the Company’s Class B common stock or any shares of the Company’s Class A common stock into which such shares of the Company’s Class B common stock are or may be convertible. Subject to continued employment on each applicable vesting date, the time-based RSUs generally vest 33 1/3% on each of the third, fourth and fifth anniversaries of the Closing, and the performance-based RSUs vest with respect to 33 1/3% of the award upon the achievement of the above time-based requirement and the achievement of a hurdle representing a 25% annual compound annual growth rate measured based on an initial value of $10.00 per share (i.e., on each of the third anniversary, the fourth anniversary, and the fifth anniversary of the date of grant, the stock price performance hurdle shall be $19.53, $24.41, and $30.51, respectively), which vesting is eligible until the fifth anniversary of grant date.

On March 28, 2024, these vesting conditions of such performance-based RSUs were modified by the compensation committee to set the hurdles at $14.00, $18.00, and $22.00, respectively. This modification impacted five grantees and resulted in $3.1 million of incremental expense, which the Company expects to recognize over a weighted average period of 2 years.

Additionally, under the Incentive Plan the Company granted performance stock units ("PSUs") that are subject to market and service vesting conditions, each of which represents the right to receive one share of the Company's Class A Common Stock and which vest in one installment on the third anniversary of the grant date based upon the Company's total stockholder return when compared to the Invesco Solar ETF (TAN), subject to certain adjustments, and the Russell 2000 index, assigning a weight of 50% to each. The number of PSUs vested, and thus shares of Class A Common Stock issued, could range from 0 to 150% of such PSUs.

During the three months ended March 31, 2024, the Company granted under the Incentive Plan an additional 2,973,127 RSUs, that are subject to time-based vesting as described above, with a weighted average grant date fair value per share of $4.89. The Company also granted 546,024 PSUs that are subject to market-based vesting as described above, with a grant date fair value per share of $5.22. Further, the Company granted 751,773 of incentive performance stock units ("GW Plan PSUs") that cliff vest on December 31, 2026, if the the Company adds 1.1 gigawatt of installed solar capacity starting January 1, 2024 and subject to continued employment on the vesting date. 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	%

GW Plan PSUs have a grant date fair value per share of $3.95.

The fair value of awards granted and modified during the period was estimated as of the respective grant dates using a Monte Carlo model utilizing a distribution of potential outcomes based on expected volatility of 66% - 69%, a risk-free interest rate of 4.4%, and an expected term of approximately 1-3 years.

As of March 31, 2024, and December 31, 2023, there were 30,992,545 shares of the Company's Class A common stock authorized for issuance under the Incentive Plan. The number of shares authorized for issuance under the Incentive Plan will increase on January 1 of each year from 2024 to 2031 by the lesser of (i) 5% of the number of shares outstanding as of the close of business on the immediately preceding December 31 and (ii) the number of shares determined by the Company's board of directors. The number of shares authorized for issuance under the Incentive Plan increased by 5% of outstanding shares as described in the foregoing on January 1, 2022 and January 1, 2023. The number of shares authorized for issuance under the Incentive Plan did not increase on January 1, 2024.

For the three months ended March 31, 2024, and 2023, the Company granted 4,270,924 and 3,011,148 RSUs, respectively, and recognized $4.3 million and $2.9 million, respectively, of stock-based compensation expenses in relation to the Incentive Plan. For the three months ended March 31, 2024, and 2023, 96,144 and 5,700 RSUs were forfeited, respectively.

Employee Stock Purchase Plan

On December 9, 2021, we adopted the 2021 Employee Stock Purchase Plan ("ESPP"), which provides a means by which eligible employees may be given an opportunity to purchase shares of the Company’s Class A common stock. As of March 31, 2024, and December 31, 2023, there were 4,662,020 shares of the Company's Class A common stock authorized for issuance under the ESPP. The number of shares authorized for issuance under the ESPP will increase on January 1 of each year from 2024 to 2031 by the lesser of (i) 1% of the number of shares outstanding as of the close of business on the immediately preceding December 31 and (ii) the number of shares determined by the Company's board of directors. No shares of the Company’s Class A common stock were issued and no stock-based compensation expense was recognized in relation to the ESPP for the three months ended March 31, 2024, and 2023. The number of shares authorized for issuance under the ESPP increased by 1% of outstanding shares as described in the foregoing on January 1, 2022 and January 1, 2023. The number of shares authorized for issuance under the ESPP did not increase on January 1, 2024.

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Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The income tax provision for interim periods is determined using an estimate of the Company’s annual effective tax rate as adjusted for discrete items arising in that quarter.

For the three months ended March 31, 2024, and 2023, the Company had income tax expense of $4.9 million and income tax expense of $0.9 million, respectively. For the three months ended March 31, 2024, the effective tax rate differs from the U.S. statutory rate primarily due to effects of non-deductible compensation, noncontrolling interests, redeemable noncontrolling interests, fair value adjustments for Alignment Shares, as well as state and local income taxes. For the three months ended March 31, 2023, the effective tax rate differs from the U.S. statutory rate primarily due to effects of non-deductible compensation, noncontrolling interests, redeemable noncontrolling interests, fair value adjustments for Alignment Shares, as well as state and local income taxes.

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Subsequent Events

3 Months Ended

Mar. 31, 2024

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

The Company has evaluated subsequent events from March 31, 2024, through May 9, 2024, which is the date the unaudited condensed consolidated financial statements were available to be issued. Other than the subsequent event disclosed below, there are no subsequent events requiring recording or disclosure in the condensed consolidated financial statements.

Resignation of Lars Norell as Co-Chief Executive Officer and Director

On April 26, 2024, Lars Norell resigned as Co-Chief Executive Officer and director of the Company. There were no disagreements between the Company and Mr. Norell that led to his decision to resign as Co-Chief Executive Officer and director. The board of directors has appointed Gregg Felton as sole Chief Executive Officer of the Company.

In connection with his resignation, Mr. Norell has signed a separation and release agreement (the “Agreement”), where he will receive severance, which includes (i) eighteen (18) months’ base salary, for an aggregate amount of approximately $0.9 million, payable as salary continuation in accordance with the Company’s normal pay schedule, (ii) subject to his timely election and continued eligibility for COBRA continuation coverage, a subsidized COBRA continuation coverage for 12 months, or if earlier, until he becomes eligible for medical benefits from a subsequent employer, (iii) a pro rata short-term incentive bonus for plan year 2024, to be paid in March 2025 at the same time that such bonuses are paid to current employees, and (iv) an additional payment of approximately $1.0 million, less applicable payroll deductions, paid in a lump sum on the eighth day after the execution of the Agreement.

Additionally, the 4,283,452 unvested RSUs and PSUs granted under the Omnibus Plan and held by Mr. Norell will be forfeited. This will result in the reversal of approximately $8.7 million of previously recognized stock-based compensation expense which will be recognized during the three months ended June 30, 2024.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 7,509	$ 5,617

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Insider Trading Arrangements

3 Months Ended

Mar. 31, 2024

shares

Trading Arrangements, by Individual

Non-Rule 10b5-1 Arrangement Adopted

false

Non-Rule 10b5-1 Arrangement Terminated

false

Dustin Weber [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

During the three months ended March 31, 2024, the following director/officer terminated their previously adopted “Rule 10b5-1 trading arrangement,” as defined in Item 408(a) of Regulation S-K intending to satisfy the affirmative defense of Rule 10b5-1(c): Mr. Weber terminated his 10b5-1 trading arrangement, which was adopted on September 14, 2023 had a duration of December 14, 2023 to December 31, 2024, and provided for a sale of 750,000 total shares of Class A common stock, subject to certain pricing triggers.

Name

Mr. Weber

Rule 10b5-1 Arrangement Terminated

true

Aggregate Available

750,000

Lars Norell [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

During the three months ended March 31, 2024, the following directors and/or officers adopted a “Rule 10b5-1 trading arrangement,” as defined in Item 408(a) of Regulation S-K intending to satisfy the affirmative defense of Rule 10b5-1(c):

Name and Title	Maximum Number of Shares of Class A Common Stock to be Sold (1)	Duration (2)	Adoption Date	Expiration Date
Lars Norell (3) Former Co-Chief Executive Officer	1,080,000	July 1, 2024 – May 30, 2025	March 28, 2024	May 30, 2025

(1) The volume of sales is determined, in part, based on certain pricing triggers outlined in each adopting person's trading arrangement.

(2) Each trading arrangement permits transactions through and including the earlier to occur of (a) the completion of all sales or (b) the expiration date listed in the table.

(3) Mr. Norell entered into his Rule 10b5-1 trading arrangement, dated March 28, 2024 (the “Norell Trading Arrangement”) through Start Capital LLC, an entity which he controls. The Norell Trading Arrangement amends Mr. Norell’s prior Rule 10b5-1 trading arrangement intending to satisfy the affirmative defense of Rule 10b5-1(c), which was adopted on December 28, 2022, and amended on August 25, 2023, had a duration of December 1, 2023 to May 30, 2025, and provided for a sale of 1,800,000 total shares of Class A common stock, subject to certain pricing triggers.

Arrangement Duration

333 days

Lars Norell March 2024 Plan [Member] | Lars Norell [Member]

Trading Arrangements, by Individual

Name

Lars Norell (3)

Title

Co-Chief Executive Officer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

March 28, 2024

Aggregate Available

1,080,000

Lars Norell December 2022 Plan [Member] | Lars Norell [Member]

Trading Arrangements, by Individual

Name

Lars Norell (3)

Title

Co-Chief Executive Officer

Rule 10b5-1 Arrangement Terminated

true

Termination Date

March 28, 2024

Aggregate Available

1,800,000

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The Company prepares its unaudited condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. The Company’s condensed consolidated financial statements include the results of wholly-owned and partially-owned subsidiaries in which the Company has a controlling interest. All intercompany balances and transactions have been eliminated in consolidation.

Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2023, filed with the Company’s 2023 annual report on Form 10-K on March 14, 2024, and the related notes which provide a more complete discussion of the Company’s accounting policies and certain other information. The information as of December 31, 2023, included in the condensed consolidated balance sheets was derived from the Company’s audited consolidated financial statements. The condensed consolidated financial statements were prepared on the same basis as the audited consolidated financial statements and reflect all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the Company’s financial position as of March 31, 2024, and the results of operations and cash flows for the three months ended March 31, 2024, and 2023. The results of operations for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected for the full year or any other future interim or annual period.

Use of Estimates

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.

In recording transactions and balances resulting from business operations, the Company uses estimates based on the best information available. Estimates are used for such items as the fair value of net assets acquired in connection with accounting for business combinations, the useful lives of the solar energy facilities, and inputs and assumptions used in the valuation of asset retirement obligations (“AROs”), contingent consideration, derivative instruments, and Class B common stock, par value $0.0001 per share ("Alignment Shares").

Segment Information

Segment Information

Operating segments are defined as components of a company about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision makers is the chief executive officer. Based on the financial information presented to and reviewed by the chief operating decision makers in deciding how to allocate the resources and in assessing the performance of the Company, the Company has determined it operates as a single operating segment and has one reportable segment, which includes revenue under power purchase agreements, revenue from net metering credit agreements,

solar renewable energy credit revenue, rental income, performance based incentives and other revenue. The Company’s principal operations, revenue and decision-making functions are located in the United States.

Cash, Cash Equivalents, and Restricted Cash

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents includes all cash balances on deposit with financial institutions and readily marketable securities with original maturity dates of three months or less at the time of acquisition and are denominated in U.S. dollars. Pursuant to the budgeting process, the Company maintains certain cash and cash equivalents on hand for possible equipment replacement related costs.

The Company records cash that is restricted as to withdrawal or use under the terms of certain contractual agreements as restricted cash. Restricted cash is included in current portion of restricted cash and restricted cash, noncurrent portion on the condensed consolidated balance sheets and includes cash held with financial institutions for cash collateralized letters of credit pursuant to various financing and construction agreements.

Concentration of Credit Risk

Concentration of Credit Risk

The Company maintains its cash in bank deposit accounts which, at times, may exceed Federal Deposit Insurance Corporation insurance limits. The Company has not experienced any losses in such accounts and believes it is not exposed to any significant credit risk on cash balances.

Accounting Pronouncements

Accounting Pronouncements

As a public company, the Company is provided the option to adopt new or revised accounting guidance as an “emerging growth company” under the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”) either (1) within the same periods as those otherwise applicable to public business entities, or (2) within the same time periods as non-public business entities, including early adoption when permissible. The Company expects to elect to adopt new or revised accounting guidance within the same time period as non-public business entities, as indicated below.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments in this update require disclosure of incremental segment information and the title and position of the chief operating decision maker ("CODM"). Registrants will be required to disclose significant segment expenses that are regularly provided to the CODM, as well as additional information on segment profit and loss measures and how such information is used by the CODM to assess segment performance and allocate resources. This ASU is effective for annual periods beginning in January 2024 and interim periods beginning in January 2025. The Company is currently evaluating the impact of this ASU, but does not currently expect it to have a material impact on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update require enhanced income tax disclosures, particularly related to a reporting entity's effective tax rate reconciliation and income taxes paid. For the rate reconciliation table, the update requires additional categories of information about federal, state, and foreign taxes and details about significant reconciling items, subject to a quantitative threshold. Income taxes paid must be similarly disaggregated by federal, state, and foreign based on a quantitative threshold. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The guidance shall be applied on a prospective basis with the option to apply retrospectively. The Company will apply the guidance upon the effective date. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures.

Fair Value Measurements

The Company measures certain assets and liabilities at fair value, which is defined as the price that would be received from the sale of an asset or paid to transfer a liability (i.e., an exit price) on the measurement date in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. Our fair value measurements use the following hierarchy, which prioritizes valuation inputs based on the extent to which the inputs are observable in the market.

•Level 1 - Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.

•Level 2 - Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs are observable in active markets are Level 2 valuation techniques.

•Level 3 - Valuation techniques in which one or more significant inputs are unobservable. Such inputs reflect our estimate of assumptions that market participants would use to price an asset or liability.

The Company holds various financial instruments that are not required to be recorded at fair value. For cash, restricted cash, accounts receivable, accounts payable, and short-term debt, the carrying amounts approximate fair value due to the short maturity of these instruments.

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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets. Cash, cash equivalents, and restricted cash consist of the following:

	As of March 31, 2024		As of December 31, 2023
Cash and cash equivalents	$	173,266	$	160,817
Current portion of restricted cash	17,622		45,358
Restricted cash, noncurrent portion	12,625		12,752
Total	$	203,513	$	218,927

Schedule of Restricted Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets. Cash, cash equivalents, and restricted cash consist of the following:

	As of March 31, 2024		As of December 31, 2023
Cash and cash equivalents	$	173,266	$	160,817
Current portion of restricted cash	17,622		45,358
Restricted cash, noncurrent portion	12,625		12,752
Total	$	203,513	$	218,927

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Revenue and Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table presents the detail of total operating revenues, net as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended March 31,
	2024		2023
Power sales under PPAs	$	12,625	$	8,986
Power sales under NMCAs	9,977		6,836
Power sales on wholesale markets	295		356
Total revenue from power sales	22,897		16,178
Solar renewable energy credit revenue	9,936		10,067
Rental income	2,085		626
Performance based incentives	4,807		2,098
Revenue recognized on contract liabilities	914		409
Other	20		—
Total operating revenues, net	$	40,659	$	29,378

Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The Company expects to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:

2024	$	14,958
2025	15,329
2026	11,498
2027	5,967
2028	1,029
Total	$	48,781

Schedule of Accounts Receivable

The following table presents the detail of receivables as recorded in accounts receivable in the unaudited condensed consolidated balance sheets:

	As of March 31, 2024		As of December 31, 2023
Power sales under PPAs	$	6,557	$	3,582
Power sales under NMCAs	9,896		8,094
Power sales on wholesale markets	63		249
Total power sales	16,516		11,925
Solar renewable energy credits	3,324		3,379
Rental income	134		450
Performance based incentives	83		1,346
Total	$	20,057	$	17,100

Schedule of Fixed Rental Payments

Maturities of fixed rental payments as of March 31, 2024, are as follows:

2024	$	6,803
2025	6,118
2026	2,892
2027	513
2028	514
Thereafter	5,255
Total	$	22,095

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Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Consolidated VIE Assets and Liabilities

The carrying amounts and classification of the consolidated VIE assets and liabilities included in condensed consolidated balance sheets are as follows:

	As of March 31, 2024		As of December 31, 2023
Current assets	$	25,201	$	22,298
Non-current assets	978,315		936,358
Total assets	$	1,003,516	$	958,656
Current liabilities	$	9,346	$	8,576
Non-current liabilities	159,151		141,360
Total liabilities	$	168,497	$	149,936

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Acquisitions (Tables)

3 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on January 31, 2024:

Assets
Accounts receivable	$	1,649
Property, plant and equipment	123,363
Operating lease asset	7,835
Other assets	1,691
Total assets acquired	134,538
Liabilities
Accounts payable	249
Intangible liabilities	2,370
Asset retirement obligation	1,374
Operating lease liability	7,187
Contract liability	1,130
Other liabilities	393
Total liabilities assumed	12,703
Non-controlling interests	2,100
Total fair value of consideration transferred	$	119,735

The following table presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed, based on their estimated fair values on December 20, 2023:

	Provisional accounting as of December 20, 2023		Measurement period adjustments		Adjusted provisional accounting as of December 20, 2023
Assets
Accounts receivable	$	876	$	—	$	876
Property, plant and equipment	131,728		(223)		131,505
Intangible assets	350		—		350

Operating lease asset	15,557		—		15,557
Other assets	2,079		(95)		1,984
Total assets acquired	150,590		(318)		150,272
Liabilities
Intangible liabilities	5,200		—		5,200
Asset retirement obligation	1,920		—		1,920
Operating lease liability	17,567		—		17,567
Other liabilities	1,275		(244)		1,031
Total liabilities assumed	25,962		(244)		25,718
Non-controlling interests	2,900		—		2,900
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

Schedule of Business Acquisitions, by Acquisition

The fair value of consideration transferred, net of cash acquired, as of January 31, 2024, is determined as follows:

Cash consideration paid to Vitol on closing	$	119,690
Post-closing purchase price true-up	45
Total fair value of consideration transferred	$	119,735

The fair value of consideration transferred, net of cash acquired, as of December 20, 2023, is determined as follows:

Cash consideration paid to seller on closing	$	80,942	$	—	$	80,942
Cash consideration paid to settle debt on behalf of seller	38,966		—		38,966
Purchase price payable(1)	4,189		—		4,189
Contingent consideration payable	2,600		—		2,600
Total fair value of consideration transferred	126,697		—		126,697
Cash and restricted cash acquired	4,969		74		5,043
Total fair value of consideration transferred, net of cash acquired	$	121,728	$	(74)	$	121,654

(1) The Company paid the entire purchase price payable amount after the acquisition date but prior to December 31, 2023.

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

following table summarizes the estimated fair values and the weighted average amortization periods of the assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Unfavorable rate revenue contracts – PPA	(100)	11 years
Unfavorable rate revenue contracts – SREC	(2,270)	9 years

The following table summarizes the estimated fair values and the weighted average amortization periods of the acquired intangible assets and assumed intangible liabilities as of the acquisition date:

	Fair Value (thousands)	Weighted Average Amortization Period
Favorable rate revenue contracts – SREC	350	4 years
Unfavorable rate revenue contracts – SREC	(5,200)	3 years

Schedule of Business Acquisition, Pro Forma Information

The unaudited pro forma combined results of operations do not reflect the costs of any integration activities or any benefits that may result from operating efficiencies or revenue synergies.

	For the three months ended March 31, 2024 (unaudited)		For the three months ended March 31, 2023 (unaudited)
Operating revenues, net	$	41,281	$	31,474
Net income	4,866		3,722

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Debt (Tables)

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule of Debt

	As of March 31, 2024		As of December 31, 2023		Interest Type	Weighted average interest rate
Long-term debt
APAF Term Loan	$	471,466	$	474,609	Fixed	3.51	%
APAF II Term Loan	111,821		112,810		Floating*	SOFR + 1.475%
APAF III Term Loan	423,619		426,619		Fixed	6.03	%
APAF IV Term Loan	101,000		—		Fixed	6.45	%
APAGH Term Loan	100,000		100,000		Fixed	8.50	%
APAG Revolver	65,000		65,000		Floating	SOFR + 1.60%
APACF II Facility	31,868		—		Floating	SOFR + 3.25%
Other term loans	11,000		11,000		Fixed	3.04	%
Financing obligations recognized in failed sale leaseback transactions	42,850		42,767		Imputed	3.97	%
Total principal due for long-term debt	1,358,624		1,232,805
Unamortized discounts and premiums	(13,291)		(13,722)
Unamortized deferred financing costs	(18,085)		(16,165)
Less: Current portion of long-term debt	73,429		39,611
Long-term debt, less current portion	$	1,253,819	$	1,163,307

* Interest rate is effectively fixed by interest rate swap, see discussion below.

Schedule of Maturities of Long-term Debt

The table below shows the payments required under the failed sale-leaseback financing obligations for the years ended:

2024	$	2,788
2025	3,023
2026	2,995
2027	2,986
2028	2,967
Thereafter	14,143
Total	$	28,902

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis

The following table provides the financial instruments measured at fair value on a recurring basis:

	March 31, 2024
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market fund	$	62,695	$	—	$	—	$	62,695
Derivative assets:
Interest rate swaps	$	—	$	2,585	$	—	$	2,585
Total assets at fair value	62,695		2,585		—		65,280
Liabilities
Alignment Shares liability	—		—		34,415		34,415
Other long-term liabilities:
True Green II Acquisition - contingent liability	—		—		4,880		4,880
Caldera Acquisition - contingent liability	—		—		2,300		2,300
Total liabilities at fair value	—		—		41,595		41,595

	December 31, 2023
	Level 1	Level 2	Level 3	Total
Assets
Derivative assets:
Interest rate swaps	—	530	—	530
Total assets at fair value	—	530	—	530
Liabilities
Alignment Shares liability	—	—	60,502	60,502
Other long-term liabilities:
True Green II Acquisition - contingent liability	—	—	4,658	4,658
Caldera Acquisition - contingent liability	—	—	2,600	2,600
Total liabilities at fair value	—	—	67,760	67,760

Schedule of Alignment Shares

	For the three months ended March 31, 2024			For the three months ended March 31, 2023
	Shares	$		Shares	$
Beginning balance	996,188	$	60,502	1,207,500	$	66,145
Alignment Shares converted	(199,238)	(10)		(201,250)	(11)
Fair value remeasurement	—	(26,077)		—	(17,018)
Ending balance	796,950	$	34,415	1,006,250	$	49,116

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Redeemable Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2024

Noncontrolling Interest [Abstract]

Schedule of Redeemable Noncontrolling Interests

The changes in the components of redeemable noncontrolling interests are presented in the table below:

	For the three months ended March 31,
	2024		2023
Redeemable noncontrolling interest, beginning balance	$	26,044	$	18,133
Cash distributions	(571)		(576)
Accrued distributions	(206)		—
Redemption of redeemable noncontrolling interests	—		(2,175)
Assumed redeemable noncontrolling interest through business combination	—		8,100
Net (loss) income attributable to redeemable noncontrolling interest	(878)		861
Redeemable noncontrolling interest, ending balance	$	24,389	$	24,343

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Leases (Tables)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Schedule of Operating Lease Cost

The following table presents the components of operating lease cost for the three months ended March 31, 2024, and 2023:

	For the three months ended March 31,
	2024		2023
Operating lease expense	$	4,069	$	2,391
Variable lease expense	418		357
Total lease expense	$	4,487	$	2,748

Schedule of Supplemental Information of Operating Leases

The following table presents supplemental information related to our operating leases:

	For the three months ended March 31,
	2024		2023
Operating cash flows from operating leases	$	4,064	$	2,238
Operating lease assets obtained in exchange for new operating lease liabilities	$	11,891	$	32,722
Weighted average remaining lease term, years	23.6 years		22.0 years
Weighted average discount rate	5.75%		5.15%

Schedule of Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of March 31, 2024, are as follows:

2024	$	12,143
2025	15,829
2026	15,952
2027	16,048
2028	16,100
Thereafter	294,720
Total	$	370,792
Less: Present value discount	(175,363)
Lease liability	$	195,429

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Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The calculation of basic and diluted earnings per share for the three months ended March 31, 2024 and 2023 was as follows (in thousands, except share and per share amounts):

	For the three months ended March 31,
	2024		2023
Net income attributable to Altus Power, Inc.	7,509		5,617
Income attributable to participating securities(1)	(38)		(36)
Net income attributable to common stockholders - basic and diluted	7,471		5,581
Class A Common Stock
Weighted average shares of common stock outstanding - basic(2)	159,025,740		158,621,674
Dilutive restricted stock	—		258,789
Dilutive RSUs	3,216,408		2,120,928
Dilutive conversion of Alignment Shares	—		2,011
Weighted average shares of common stock outstanding - diluted	162,242,148		161,003,402
Net income attributable to common stockholders per share - basic	$	0.05	$	0.04
Net income attributable to common stockholders per share - diluted	$	0.05	$	0.03

(1) Represents the income attributable to 796,950 and 1,006,250 Alignment Shares outstanding as of March 31, 2024 and 2023, respectively.

(2) For the three months ended March 31, 2023, the calculation of basic weighted average shares of common stock outstanding excludes 271,259 shares of the Company's Class A common stock provided to holders of the common stock of the Company prior to the Merger, including shares that were subject to vesting conditions.

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

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	%

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Significant Accounting Policies - Additional Information (Details)	3 Months Ended
	Mar. 31, 2024 numberOfReportableSegment numberOfOperatingSegment $ / shares	Mar. 31, 2023	Dec. 31, 2023 $ / shares
Concentration Risk [Line Items]
Common stock, par value (in usd per share)	$ 0.0001		$ 0.0001
Number of operating segments | numberOfOperatingSegment	1
Number of reportable segments | numberOfReportableSegment	1
Class B Common Stock
Concentration Risk [Line Items]
Common stock, par value (in usd per share)	$ 0.0001
Revenue Benchmark | Customer Concentration Risk | Customer One
Concentration Risk [Line Items]
Concentration risk		15.00%

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Significant Accounting Policies - Reconciliation of Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash and cash equivalents	$ 173,266	$ 160,817
Current portion of restricted cash	17,622	45,358
Restricted cash, noncurrent portion	12,625	12,752
Total	$ 203,513	$ 218,927	$ 84,181	$ 199,398

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Revenue and Accounts Receivable - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Operating revenues, net	$ 40,659	$ 29,378
Power sales under PPAs
Disaggregation of Revenue [Line Items]
Total revenue from power sales	12,625	8,986
Power sales under NMCAs
Disaggregation of Revenue [Line Items]
Total revenue from power sales	9,977	6,836
Power sales on wholesale markets
Disaggregation of Revenue [Line Items]
Total revenue from power sales	295	356
Total revenue from power sales
Disaggregation of Revenue [Line Items]
Total revenue from power sales	22,897	16,178
Solar renewable energy credit revenue
Disaggregation of Revenue [Line Items]
Operating revenues, net	9,936	10,067
Rental income
Disaggregation of Revenue [Line Items]
Operating revenues, net	2,085	626
Performance based incentives
Disaggregation of Revenue [Line Items]
Operating revenues, net	4,807	2,098
Revenue recognized on contract liabilities
Disaggregation of Revenue [Line Items]
Operating revenues, net	914	409
Other
Disaggregation of Revenue [Line Items]
Operating revenues, net	$ 20	$ 0

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Revenue and Accounts Receivable - Transaction Price Allocated to Remaining Performance Obligation (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 48,781
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 14,958
Remaining performance period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 15,329
Remaining performance period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 11,498
Remaining performance period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 5,967
Remaining performance period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 1,029
Remaining performance period	1 year

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Revenue and Accounts Receivable - Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 20,057	$ 17,100
Power sales under PPAs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total power sales	6,557	3,582
Power sales under NMCAs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total power sales	9,896	8,094
Power sales on wholesale markets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total power sales	63	249
Total power sales
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total power sales	16,516	11,925
Solar renewable energy credits
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	3,324	3,379
Rental income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	134	450
Performance based incentives
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 83	$ 1,346

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Revenue and Accounts Receivable - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Allowance for uncollectible accounts	$ 900	$ 900
Contract liability, current	2,802	2,940
Contract liability, noncurrent	6,132	5,620
Contract liability, noncurrent		0
Contract with customer, asset, after allowance for credit loss		0
SREC
Net Investment Income [Line Items]
Contract liability, current	2,800	2,900
Contract liability, noncurrent	$ 6,100	$ 5,600

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Revenue and Accounts Receivable - Maturities of Fixed Rental Payment (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Revenue from Contract with Customer [Abstract]
2024	$ 6,803
2025	6,118
2026	2,892
2027	513
2028	514
Thereafter	5,255
Total	$ 22,095

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Variable Interest Entities - Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Current assets	$ 216,708	$ 228,797
Total assets	2,218,476	2,090,349
Current liabilities	146,085	106,510
Total liabilities	1,686,035	1,565,338
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Current assets	25,201	22,298
Non-current assets	978,315	936,358
Total assets	1,003,516	958,656
Current liabilities	9,346	8,576
Non-current liabilities	159,151	141,360
Total liabilities	$ 168,497	$ 149,936

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Variable Interest Entities - Additional Information (Details) - variableInterestEntity	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Zildjian Solar V, LLC
Variable Interest Entity [Line Items]
Consolidated VIEs	36	35

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Acquisitions - Additional Information (Details) $ in Thousands			3 Months Ended
	Jan. 31, 2024 USD ($) facility MW	Dec. 20, 2023 USD ($) MW	Mar. 31, 2024 USD ($) MW	Mar. 31, 2023 USD ($)	Dec. 20, 2023	Dec. 20, 2023 operatingSolarEnergyFacility	Dec. 20, 2023 developmentSolarEnergyFacility
Business Acquisition [Line Items]
Acquisition and entity formation costs			$ 1,066	$ 1,491
Asset Acquisitions
Business Acquisition [Line Items]
Nameplate capacity | MW			1,300,000
Consideration transferred			$ 4,000
Property, plant and equipment			4,000
Operating lease assets			600
Operating lease liabilities			600
Intangible liabilities			1,200
Vitol Acquisition
Business Acquisition [Line Items]
Nameplate capacity | MW	84
Number of assets acquired | facility	20
Percent of ownership interest acquired	100.00%
Purchase price	$ 119,735
Acquisition and entity formation costs			700
Revenues			2,000
Net income (loss)			1,200
Caldera Acquisition
Business Acquisition [Line Items]
Nameplate capacity | MW		121
Number of assets acquired						35	6
Percent of ownership interest acquired					100.00%
Acquisition and entity formation costs			$ 8,000	$ 900
Business combination, consideration transferred		$ 121,700

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Acquisitions - Assets Acquired and Liabilities Assumed from Business Combination (Details) - USD ($) $ in Thousands	Dec. 20, 2023	Jan. 31, 2024
Provisional Accounting
Liabilities
Intangible liabilities	$ 5,200
Vitol Acquisition
Assets
Accounts receivable		$ 1,649
Property, plant and equipment		123,363
Operating lease asset		7,835
Other assets		1,691
Total assets acquired		134,538
Liabilities
Accounts payable		249
Intangible liabilities		2,370
Asset retirement obligation		1,374
Operating lease liability		7,187
Contract liability		1,130
Other liabilities		393
Total liabilities assumed		12,703
Non-controlling interests		2,100
Total fair value of consideration transferred		$ 119,735
Caldera Acquisition | Provisional Accounting
Assets
Accounts receivable	876
Property, plant and equipment	131,728
Operating lease asset	15,557
Other assets	2,079
Intangible assets	350
Total assets acquired	150,590
Liabilities
Asset retirement obligation	1,920
Operating lease liability	17,567
Other liabilities	1,275
Total liabilities assumed	25,962
Non-controlling interests	2,900
Total fair value of consideration transferred	121,728
Caldera Acquisition | Measurement Period Adjustments
Assets
Accounts receivable	0
Property, plant and equipment	(223)
Intangible assets	0
Operating lease asset	0
Other assets	(95)
Measurement period adjustments, Total assets acquired	(318)
Liabilities
Intangible liabilities	0
Asset retirement obligation	0
Operating lease liability	0
Other liabilities	(244)
Measurement period adjustments, Total liabilities assumed	(244)
Measurement period adjustments, Redeemable non-controlling interests	0
Total fair value of consideration transferred, net of cash acquired	(74)
Caldera Acquisition | Final Accounting
Assets
Accounts receivable	876
Property, plant and equipment	131,505
Operating lease asset	15,557
Other assets	1,984
Intangible assets	350
Total assets acquired	150,272
Liabilities
Intangible liabilities	5,200
Asset retirement obligation	1,920
Operating lease liability	17,567
Other liabilities	1,031
Total liabilities assumed	25,718
Non-controlling interests	2,900
Total fair value of consideration transferred	$ 121,654

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Acquisitions - Fair Value of Consideration Transferred (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Dec. 20, 2023
Vitol Acquisition
Business Acquisition [Line Items]
Cash consideration paid to Vitol on closing	$ 119,690
Post-closing purchase price true-up	45
Total fair value of consideration transferred	$ 119,735
Caldera Acquisition
Business Acquisition [Line Items]
Total fair value of consideration transferred, net of cash acquired		$ 121,700
Caldera Acquisition | Provisional Accounting
Business Acquisition [Line Items]
Cash consideration paid to seller on closing		80,942
Cash consideration paid to settle debt on behalf of seller		38,966
Purchase price payable		4,189
Contingent consideration payable		2,600
Total fair value of consideration transferred		126,697
Cash and restricted cash acquired		4,969
Total fair value of consideration transferred, net of cash acquired		121,728
Caldera Acquisition | Measurement Period Adjustments
Business Acquisition [Line Items]
Measurement period adjustments, Cash consideration paid to seller on closing		0
Measurement period adjustments, Cash consideration paid to settle debt on behalf of seller		0
Measurement period adjustments, Purchase price payable		0
Measurement period adjustments, Contingent consideration payable		0
Measurement period adjustments, Total fair value of consideration transferred		0
Measurement period adjustments, Restricted cash acquired		74
Measurement period adjustments of increase the fair value of consideration transferred		(74)
Caldera Acquisition | Final Allocation
Business Acquisition [Line Items]
Cash consideration paid to seller on closing		80,942
Cash consideration paid to settle debt on behalf of seller		38,966
Purchase price payable		4,189
Contingent consideration payable		2,600
Total fair value of consideration transferred		126,697
Cash and restricted cash acquired		5,043
Total fair value of consideration transferred, net of cash acquired		$ 121,654

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Acquisitions - Estimated Fair Value and Weighted Average Amortization Period of Acquired Assets and Assumed Intangible Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Dec. 20, 2023
Vitol Acquisition | Unfavorable Rate Revenue Contracts | PPA
Business Acquisition [Line Items]
Fair value, Unfavorable rate revenue contracts	$ (100)
Weighted average amortization period	11 years
Vitol Acquisition | Unfavorable Rate Revenue Contracts | SREC
Business Acquisition [Line Items]
Fair value, Unfavorable rate revenue contracts	$ (2,270)
Weighted average amortization period	9 years
Caldera Acquisition | Unfavorable Rate Revenue Contracts | SREC
Business Acquisition [Line Items]
Fair value, Unfavorable rate revenue contracts		$ (5,200)
Weighted average amortization period		3 years
Caldera Acquisition | Favorable Rate Revenue Contracts | SREC
Business Acquisition [Line Items]
Fair value, favorable rate revenue contracts		$ 350
Weighted average amortization period		4 years

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Acquisitions - Pro Forma (Details) - Vitol Acquisition - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
Operating revenues, net	$ 41,281	$ 31,474
Net income	$ 4,866	$ 3,722

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Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Long-term debt	$ 1,358,624	$ 1,232,805
Unamortized discounts and premiums	(13,291)	(13,722)
Unamortized deferred financing costs	(18,085)	(16,165)
Less: Current portion of long-term debt	73,429	39,611
Long-term debt, less current portion	1,253,819	1,163,307
Financing obligations recognized in failed sale leaseback transactions
Line of Credit Facility [Line Items]
Long-term debt	$ 42,850	42,767
Weighted average interest rate	3.97%
APAF Term Loan
Line of Credit Facility [Line Items]
Long-term debt	$ 471,466	474,609
Weighted average interest rate	3.51%
APAF II Term Loan
Line of Credit Facility [Line Items]
Long-term debt	$ 111,821	112,810
APAF II Term Loan | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate	1.475%
APAF III Term Loan
Line of Credit Facility [Line Items]
Long-term debt	$ 423,619	426,619
Weighted average interest rate	6.03%
APAF IV Term Loan
Line of Credit Facility [Line Items]
Long-term debt	$ 101,000	0
Weighted average interest rate	6.45%
APAGH Term Loan
Line of Credit Facility [Line Items]
Long-term debt	$ 100,000	100,000
Weighted average interest rate	8.50%
APAG Revolver
Line of Credit Facility [Line Items]
Long-term debt	$ 65,000	65,000
APAG Revolver | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate	1.60%
APACF II Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 31,868	0
APACF II Facility | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate	3.25%
Other term loans
Line of Credit Facility [Line Items]
Long-term debt	$ 11,000	$ 11,000
Weighted average interest rate	3.04%

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Debt - Additional Information (Details) - USD ($) $ in Thousands											3 Months Ended		6 Months Ended
	Mar. 26, 2024	Jan. 19, 2024	Dec. 27, 2023	Dec. 20, 2023	Nov. 10, 2023	Jul. 21, 2023	Jun. 15, 2023	Dec. 23, 2022	Dec. 19, 2022	Aug. 25, 2021	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023	Dec. 31, 2023	Feb. 15, 2023	Aug. 29, 2022	Jan. 10, 2020
Line of Credit Facility [Line Items]
Payment of debt issuance costs											$ 1,231	$ 1,976
Financing obligation											41,900			$ 41,800
Deferred transaction cost											900		$ 900
Payment of financing obligation											300	200
Interest expense											400
Debt repayment												500
Payments of financing costs											0	600
Gain (loss) on extinguishment of debt												$ 100
Long-term debt											1,358,624			1,232,805
Minimum lease payments											28,902
Investment tax credit											13,200
Implied interest on financing lease obligation											3,800
Difference between minimum lease payments and fair value of financing lease obligations acquired											400
Surety Bond
Line of Credit Facility [Line Items]
Face amount											5,900			5,400
Stellar HI Acquisition
Line of Credit Facility [Line Items]
Difference between minimum lease payments and fair value of finance obligations											$ 2,600
True Green II Acquisition
Line of Credit Facility [Line Items]
Line of credit facility, current borrowing capacity															$ 193,000
Financing obligations recognized in failed sale leaseback transactions
Line of Credit Facility [Line Items]
Weighted average interest rate											3.97%
Long-term debt											$ 42,850			42,767
Minimum lease payments											$ 28,900
APAF Term Loan
Line of Credit Facility [Line Items]
Weighted average interest rate											3.51%
Outstanding principal balance											$ 471,500			474,600
Debt issuance costs											6,500			6,700
Long-term debt											471,466			474,609
APAF II Term Loan
Line of Credit Facility [Line Items]
Face amount											111,800			112,800
Derivative, fixed interest rate								4.885%
Unamortized debt issuance costs											2,000			2,200
Long-term debt											$ 111,821			112,810
APAF II Term Loan | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate											1.475%
Debt instrument, basis spread on variable rate								1.475%
APAF II Term Loan | Other term loans
Line of Credit Facility [Line Items]
Face amount								$ 125,700
APAF III Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 163,000		$ 28,000	$ 47,000
Weighted average interest rate											6.03%
Outstanding principal balance															$ 204,000
Face amount											$ 423,600			426,600
Unamortized debt issuance costs											14,000			14,300
Interest rate				6.03%											5.62%
Payment of debt issuance costs				$ 1,300		200	300				4,000
Issuance discount				$ 800		$ 1,100	1,500				6,300
Long-term debt											$ 423,619			426,619
APAF IV Term Loan
Line of Credit Facility [Line Items]
Weighted average interest rate											6.45%
Face amount											$ 101,000
Derivative, fixed interest rate	6.45%
Unamortized debt issuance costs											1,600
Line of credit facility, current borrowing capacity	$ 101,000
Issuance discount	$ 1,600
Long-term debt											$ 101,000			0
APAGH Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 100,000
Weighted average interest rate											8.50%
Face amount											$ 100,000			100,000
Unamortized debt issuance costs											3,800			4,000
Interest rate			8.50%
Line of credit facility, current borrowing capacity			$ 100,000
Payment of debt issuance costs			3,000
Issuance discount			1,000
Line of credit facility, commitment fee amount			$ 100,000
Long-term debt											100,000			100,000
APAG Revolver
Line of Credit Facility [Line Items]
Face amount											65,000
Line of credit facility, commitment fee amount									$ 200,000
Long-term debt											$ 65,000			65,000
APAG Revolver | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate											1.60%
APACF II Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 200,000
Debt issuance costs					$ 300
Face amount											$ 31,900			0
Unamortized debt issuance costs											900
Line of credit facility, current borrowing capacity		$ 31,900
Issuance discount		$ 600
Line of credit facility, maturity period					364 days
Long-term debt											$ 31,868			0
APACF II Facility | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Weighted average interest rate											3.25%
Interest rate					3.25%
Construction to Term Loan Facility
Line of Credit Facility [Line Items]
Repaid all outstanding term loans							$ 15,800
Construction to Term Loan Facility | Construction Loans
Line of Credit Facility [Line Items]
Face amount																	$ 187,500
Project-Level Term Loan
Line of Credit Facility [Line Items]
Outstanding principal balance											$ 11,000			11,000
Debt issuance costs											1,700			1,800
Project-Level Term Loan | Stellar NJ 2 Acquisition
Line of Credit Facility [Line Items]
Outstanding principal balance																$ 14,100
Debt instrument, unamortized discount																$ 2,200
Blackstone Credit Facility | APAF Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity										$ 503,000
Weighted average interest rate										3.51%
Initial amortization rate										2.50%
Debt instrument term										8 years
Amortization step up rate										4.00%
Blackstone Credit Facility | APAF III Term Loan
Line of Credit Facility [Line Items]
Initial amortization rate				3.25%											2.50%
Letter of Credit
Line of Credit Facility [Line Items]
Outstanding principal balance											52,300			54,700
Unused lines of Credit
Line of Credit Facility [Line Items]
Remaining borrowing capacity											$ 51,100			$ 54,400

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Debt - Payments Required Under Failed Sale-Leasebacks (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Debt Disclosure [Abstract]
2024	$ 2,788
2025	3,023
2026	2,995
2027	2,986
2028	2,967
Thereafter	14,143
Total	$ 28,902

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Fair Value Measurements - Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Total assets at fair value	$ 65,280	$ 530
Liabilities
Alignment Shares liability	34,415	60,502
Total liabilities at fair value	41,595	67,760
Money market fund
Assets
Money market fund	62,695
True Green II Acquisition - contingent liability
Liabilities
Other long-term liabilities:	4,880	4,658
Caldera Acquisition - contingent liability
Liabilities
Other long-term liabilities:	2,300	2,600
Interest rate swaps
Assets
Interest rate swaps	2,585	530
Level 1
Assets
Total assets at fair value	62,695	0
Liabilities
Alignment Shares liability	0	0
Total liabilities at fair value	0	0
Level 1 | Money market fund
Assets
Money market fund	62,695
Level 1 | True Green II Acquisition - contingent liability
Liabilities
Other long-term liabilities:	0	0
Level 1 | Caldera Acquisition - contingent liability
Liabilities
Other long-term liabilities:	0	0
Level 1 | Interest rate swaps
Assets
Interest rate swaps	0	0
Level 2
Assets
Total assets at fair value	2,585	530
Liabilities
Alignment Shares liability	0	0
Total liabilities at fair value	0	0
Level 2 | Money market fund
Assets
Money market fund	0
Level 2 | True Green II Acquisition - contingent liability
Liabilities
Other long-term liabilities:	0	0
Level 2 | Caldera Acquisition - contingent liability
Liabilities
Other long-term liabilities:	0	0
Level 2 | Interest rate swaps
Assets
Interest rate swaps	2,585	530
Level 3
Assets
Total assets at fair value	0	0
Liabilities
Alignment Shares liability	34,415	60,502
Total liabilities at fair value	41,595	67,760
Level 3 | Money market fund
Assets
Money market fund	0
Level 3 | True Green II Acquisition - contingent liability
Liabilities
Other long-term liabilities:	4,880	4,658
Level 3 | Caldera Acquisition - contingent liability
Liabilities
Other long-term liabilities:	2,300	2,600
Level 3 | Interest rate swaps
Assets
Interest rate swaps	$ 0	$ 0

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Fair Value Measurements - Additional Information (Details) $ in Thousands				3 Months Ended		12 Months Ended
	Dec. 20, 2023 USD ($)	Feb. 15, 2023 USD ($) facility MW	Dec. 22, 2020 USD ($) facility MW	Mar. 31, 2024 USD ($) shares	Mar. 31, 2023 USD ($) shares	Dec. 31, 2023 USD ($) shares	Dec. 20, 2023 MW	Dec. 20, 2023 operatingSolarEnergyFacility	Dec. 20, 2023 developmentSolarEnergyFacility	Jul. 21, 2023 USD ($)	Jun. 15, 2023 USD ($)	Dec. 31, 2022 shares
Fair Value, Option, Quantitative Disclosures [Line Items]
Alignment shares outstanding (in shares) | shares				796,950	1,006,250	996,188						1,207,500
Period after merger				7 years
Volatility rate				70.00%
Risk-free interest rate				4.31%
Interest expense				$ (16,193)	$ (12,446)
(Gain) loss on fair value remeasurement of contingent consideration, net				(79)	50
APAF III Term Loan
Fair Value, Option, Quantitative Disclosures [Line Items]
Maximum borrowing capacity	$ 163,000									$ 28,000	$ 47,000
Caldera Acquisition
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout cash payments	$ 8,000
Amount of change of other contingent consideration, amount				2,300		$ 2,600
(Gain) loss on fair value remeasurement of contingent consideration, net				300
Number of assets acquired								35	6
Nameplate capacity | MW							121
True Green II Acquisition
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout cash payments		$ 10,000
Amount of change of other contingent consideration, amount		$ 4,900				4,700
(Gain) loss on fair value remeasurement of contingent consideration, net				200
Number of assets acquired | facility		58
Nameplate capacity | MW		220
Solar Acquisition
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout cash payments			$ 3,100
Number of assets acquired | facility			16
Nameplate capacity | MW			61.5
Contingent consideration			$ 7,400
Period since acquisition of facilities			36 months
Purchase price payable, noncurrent				3,100		3,100
Solar Acquisition | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Period since acquisition of facilities			18 months
Solar Acquisition | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Period since acquisition of facilities			36 months
Solar Acquisition | Power Rate
Fair Value, Option, Quantitative Disclosures [Line Items]
(Gain) loss on fair value remeasurement of contingent consideration, net				0	100
Interest Rate Swaps
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative, notional amount				118,800		112,800
Interest expense				2,100	$ 2,700
Forward Starting Interest Rate Swap
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative, notional amount				250,000
Proceeds from issuance of debt				16,700
Change in unrealized gain (loss) on fair value hedging instruments						17,300
Forward Starting Interest Rate Swap | APAF III and IV Term Loan
Fair Value, Option, Quantitative Disclosures [Line Items]
Interest expense				(400)
Debt interest expense				17,300
Gain (loss) to be reclassified during next 12 months				$ 1,600
Forward Starting Interest Rate Swap | APAF III Term Loan
Fair Value, Option, Quantitative Disclosures [Line Items]
Maximum borrowing capacity						238,000
Forward Starting Interest Rate Swap | APAF IV Term Loan
Fair Value, Option, Quantitative Disclosures [Line Items]
Remaining borrowing capacity						$ 12,000

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Fair Value Measurements - Alignment Shares (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Shares
Beginning balance (in shares)	996,188	1,207,500
Alignment shares converted (in shares)	(199,238)	(201,250)
Fair value remeasurement (in shares)	0	0
Ending balance (in shares)	796,950	1,006,250
$
Beginning balance	$ 60,502	$ 66,145
Alignment Shares converted	(10)	(11)
Fair value remeasurement	(26,077)	(17,018)
Ending balance	$ 34,415	$ 49,116

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Equity (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($) vote shares	Mar. 31, 2023 shares	Dec. 31, 2022 shares
Class of Stock [Line Items]
Common stock, authorized (in shares)	988,591,250	988,591,250
Common stock, issued (in shares)	159,874,981	158,999,886
Number of votes | vote		1
Common stock dividends | $	$ 0	$ 0
Alignment shares outstanding (in shares)	796,950	996,188	1,006,250	1,207,500
Class A Common Stock
Class of Stock [Line Items]
Common stock, authorized (in shares)	988,591,250	988,591,250
Common stock, issued (in shares)	159,874,981	158,999,886
Class B Common Stock
Class of Stock [Line Items]
Alignment shares outstanding (in shares)	796,950	996,188

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Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Components of Redeemable Noncontrolling Interests
Redeemable noncontrolling interest, beginning balance	$ 26,044	$ 18,133
Cash distributions	(571)	(576)
Accrued distributions	(206)	0
Redemption of redeemable noncontrolling interests	0	(2,175)
Assumed redeemable noncontrolling interest through business combination	0	8,100
Net (loss) income attributable to redeemable noncontrolling interest	(878)	861
Redeemable noncontrolling interest, ending balance	$ 24,389	$ 24,343

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Leases - Operating Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Operating lease expense	$ 4,069	$ 2,391
Variable lease expense	418	357
Total lease expense	$ 4,487	$ 2,748

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Leases - Supplemental Information of Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Operating cash flows from operating leases	$ 4,064	$ 2,238
Operating lease assets obtained in exchange for new operating lease liabilities	$ 11,891	$ 32,722
Weighted average remaining lease term, years	23 years 7 months 6 days	22 years
Weighted average discount rate	5.75%	5.15%

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Leases - Schedule of Maturities of Operating Lease Liabilities (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Leases [Abstract]
2024	$ 12,143
2025	15,829
2026	15,952
2027	16,048
2028	16,100
Thereafter	294,720
Total	370,792
Less: Present value discount	(175,363)
Lease liability	$ 195,429

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Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Guarantor term	15 years
Purchase obligation	$ 0.0	$ 0.0
Minimum
Guarantor Obligations [Line Items]
Guarantor term	10 years
Maximum
Guarantor Obligations [Line Items]
Guarantor term	25 years
Performance Guarantee
Guarantor Obligations [Line Items]
Performance guarantee obligations	$ 0.0	$ 0.0

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Related Party Transactions (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 09, 2022 $ / MW
Related Party Transaction [Line Items]
Interest expense	$ 400
Commercial collaboration agreement term	7 years
Commercial collaboration agreement renewal term	1 year
Operating lease asset	$ 183,655		$ 173,804
Operating lease liability	$ 195,429
Weighted average remaining lease term, years	23 years 7 months 6 days	22 years
Lease payment	$ 700	$ 0
Related Party
Related Party Transaction [Line Items]
Due to related parties	85		51
Due from related parties	0		0
Related Party | Link Logistics
Related Party Transaction [Line Items]
Operating lease asset	27,100		24,300
Operating lease liability	$ 27,100		24,300
Weighted average remaining lease term, years	29 years
Related Party | Commercial Collaboration Agreement | CBRE Group, Inc
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	$ 0	0
Repayments of related party debt	0		0
Related Party | Purchase and Sale Agreement | CBRE Group, Inc
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	200	100
Related Party | Master Services Agreement | CBRE Group, Inc
Related Party Transaction [Line Items]
Due to related parties	100		$ 100
Minimum | Related Party | CBRE Group, Inc
Related Party Transaction [Line Items]
Development Fee | $ / MW				0.015
Maximum | Related Party | CBRE Group, Inc
Related Party Transaction [Line Items]
Development Fee | $ / MW				0.030
APAF Term Loan and APAF III Term Loan | Related Party
Related Party Transaction [Line Items]
Interest expense	$ 200	$ 700

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Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to Altus Power, Inc.	$ 7,509	$ 5,617
Income attributable to participating securities	(38)	(36)
Net income attributable to common stockholders - basic	7,471	5,581
Net income attributable to common stockholders - diluted	$ 7,471	$ 5,581
Weighted average shares of common stock outstanding - basic (in shares)	159,025,740	158,621,674
Dilutive conversion of Alignment Shares (in shares)	0	2,011
Weighted average shares of common stock outstanding - diluted (in shares)	162,242,148	161,003,402
Net income attributable to common stockholders per share - basic (in usd per share)	$ 0.05	$ 0.04
Net income attributable to common stockholders per share - diluted (in usd per share)	$ 0.05	$ 0.03
Alignment shares outstanding (in shares)	796,950	1,006,250	996,188	1,207,500
Class A Common Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from of earnings per share (in shares)	271,259
Restricted Stock Units (RSUs)
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive shares (in shares)	0	258,789
Restricted Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive shares (in shares)	3,216,408	2,120,928

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Stock-Based Compensation - Additional Information (Details)			3 Months Ended
	Mar. 28, 2024 USD ($) $ / shares	Jul. 12, 2021 $ / shares	Mar. 31, 2024 USD ($) installment $ / shares GW shares	Mar. 31, 2023 USD ($) shares	Dec. 31, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation | $			$ 4,304,000	$ 2,872,000
Risk-free interest rate			4.31%
Common stock, issued (in shares)			159,874,981		158,999,886
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, issued (in shares)			159,874,981		158,999,886
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent subject to hurdle achievement		25.00%
Share price hurdle to satisfy performance condition (in usd per share) | $ / shares		$ 10.00
Stock price performance hurdle, third anniversary (in usd per share) | $ / shares		19.53
Stock price performance hurdle, fifth anniversary (in usd per share) | $ / shares		24.41
Stock price performance hurdle, fourth anniversary (in usd per share) | $ / shares		$ 30.51
Nameplate capacity | GW			1.1
Expected volatility minimum			66.00%
Expected volatility, maximum			69.00%
Risk-free interest rate			4.40%
Percent of increase in authorized shares			5.00%
Omnibus Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term			1 year
Omnibus Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term			3 years
Omnibus Incentive Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of stock subject to conversion		5.00%
Trading days			20 days
Common stock authorized for issuance (in shares)			30,992,545		30,992,545
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of increase in authorized shares			1.00%
Employee Stock Purchase Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for issuance (in shares)			4,662,020		4,662,020
Stock-based compensation | $			$ 0	$ 0
Common stock, issued (in shares)			0	0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense | $			$ 46,900,000
Weighted average period of recognition			2 years
Restricted Stock Units (RSUs) | Holdings Restricted Units Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock reserved for future issuance (in shares)			0		210,710
Restricted Stock Units (RSUs) | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installment | installment			1
RSUs granted (in shares)			4,270,924	3,011,148
Stock-based compensation | $			$ 4,300,000	$ 2,900,000
RSUs forfeited (in shares)			96,144	5,700
Restricted Stock Units (RSUs) | Omnibus Incentive Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received (in shares)			1
Performance-Based Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense | $	$ 3,100,000
Weighted average period of recognition	2 years
Stock price performance hurdle, third anniversary (in usd per share) | $ / shares	$ 14.00
Stock price performance hurdle, fifth anniversary (in usd per share) | $ / shares	18.00
Stock price performance hurdle, fourth anniversary (in usd per share) | $ / shares	$ 22.00
Performance-Based Restricted Stock Units (RSUs) | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of stock subject to conversion		80.00%
Percent of award vesting rights		33.33%
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU vested range			0.00%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU vested range			150.00%
Performance Shares | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of weighted average grant date fair value			50.00%
RSUs granted (in shares)			546,024
RSUs granted (in usd per share) | $ / shares			$ 5.22
Performance Shares | GW Plan PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted (in shares)			751,773
RSUs granted (in usd per share) | $ / shares			$ 3.95
Time-Based Restricted Stock Units (RSUs) | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of award vesting rights		33.33%
RSUs granted (in shares)			2,973,127
RSUs granted (in usd per share) | $ / shares			$ 4.89

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Stock-Based Compensation - Schedule of calculated based on the average stock price (Details) - Performance Shares - Omnibus Incentive Plan	Mar. 31, 2024 $ / shares
Less than $8
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
AMPS Price, upper range	$ 8
Payout	40.00%
$8-10.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
AMPS Price, lower range	$ 8
AMPS Price, upper range	$ 10.99
Payout	80.00%
$11-11.50
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
AMPS Price, lower range	$ 11
AMPS Price, upper range	$ 11.50
Payout	100.00%
$11.51-12.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
AMPS Price, lower range	$ 11.51
AMPS Price, upper range	$ 12.99
Payout	110.00%
$13+
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
AMPS Price, upper range	$ 13
Payout	120.00%

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income tax expense	$ 4,896	$ 888

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Subsequent Events (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 26, 2024	Mar. 31, 2024	Mar. 31, 2023
Restricted Stock Units (RSUs) | Omnibus Incentive Plan
Subsequent Event [Line Items]
RSUs granted (in shares)		4,270,924	3,011,148
Stock-based compensation		$ 4.3	$ 2.9
Subsequent Event | Restricted Stock Units (RSUs) | Omnibus Incentive Plan | Separation and Release Agreement
Subsequent Event [Line Items]
RSUs granted (in shares)	4,283,452
Stock-based compensation	$ 8.7
Subsequent Event | Mr. Norell | Separation and Release Agreement
Subsequent Event [Line Items]
Number of months to receive severance	18 months
Severance costs	$ 0.9
COBRA continuation coverage period	12 months
Severance, additional payment	$ 1.0