Amendment No. 7 to the At Market Issuance Sales Agreement

Exhibit 1.8

HA SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

Amendment No. 7 to the At Market Issuance Sales Agreement

February 28, 2025

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Ladies and Gentlemen:

Reference is made to the At Market Issuance Sales Agreement, dated May 13, 2020, as amended by Amendment No. 1 to the At Market Issuance Sales Agreement, dated February 26, 2021, as further amended by Amendment No. 2 to the At Market Issuance Sales Agreement, dated March 1, 2022, as further amended by Amendment No. 3 to the At Market Issuance Sales Agreement, dated February 22, 2023, as further amended by Amendment No. 4 to the At Market Issuance Sales Agreement, dated May 10, 2023, as further amended by Amendment No. 5 to the At Market Issuance Sales Agreement, dated September 5, 2023, and as further amended by Amendment No. 6 to the At Market Issuance Sales Agreement, dated July 3, 2024 (as amended, the “Agreement”), among HA Sustainable Infrastructure Capital, Inc., a Delaware corporation (formerly incorporated in Maryland as ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Sustainable Infrastructure Capital, Inc.) (the “Company”), and ▇. ▇▇▇▇▇ Securities, Inc. (formerly ▇. ▇▇▇▇▇ FBR, Inc.), Barclays Capital Inc., BofA Securities, Inc., ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Co. LLC, ▇▇▇▇▇▇▇▇▇ LLC, ▇.▇. ▇▇▇▇▇▇ Securities LLC, KeyBanc Capital Markets Inc., ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ & Co. LLC, Nomura Securities International, Inc., Truist Securities, Inc. and ▇▇▇▇▇ Fargo Securities, LLC, as an agent and/or principal (each, an “Agent” or collectively, the “Agents”), with respect to the issuance and sale from time to time by the Company of shares of Common Stock having an aggregate gross sales price not to exceed $500,000,000 on the terms set forth in the Agreement.

In connection with the foregoing, the parties hereto wish to amend the Agreement through this Amendment No. 7 to the At Market Issuance Sales Agreement (this “Amendment”) to make certain changes to the Agreement with effect on and after the date hereof (the “Effective Date”).

SECTION 1. Definitions. Unless otherwise defined herein, capitalized terms used herein shall have the respective meanings assigned thereto in the Agreement.

SECTION 2. Amendments. The parties hereto agree, from and after the Effective Date, that:

HA Sustainable Infrastructure Capital, Inc., a Delaware corporation (formerly incorporated in Maryland as ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Sustainable Infrastructure Capital, Inc.) (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time to or through either of ▇. ▇▇▇▇▇ Securities, Inc., Barclays Capital Inc., BofA Securities, Inc., Citigroup Global Markets Inc., Credit Agricole Securities (USA) Inc., ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Co. LLC, ▇▇▇▇▇▇▇▇▇ LLC, ▇.▇. ▇▇▇▇▇▇ Securities LLC, KeyBanc Capital Markets Inc., ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ & Co. LLC, Mizuho Securities USA LLC, Nomura Securities International, Inc., RBC Capital Markets, LLC, ▇▇▇▇▇▇ ▇. ▇▇▇▇▇ & Co. Incorporated and Truist Securities, Inc., as sales agent and/or principal (each, an “Agent” and together, the “Agents”), shares (the “Shares”) of the Company’s common stock, $0.01 par value (the “Common Stock”), having an aggregate gross sales price not to exceed $500,000,000, on the terms set forth in this At Market Issuance Sales Agreement, as amended.

Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Agents shall be directed to ▇. ▇▇▇▇▇ Securities, Inc. at ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇ ▇▇▇▇▇, to Barclays Capital Inc. at ▇▇▇ ▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇▇▇, Attention: Syndicate Registration, (fax number: ▇▇▇-▇▇▇ ▇▇▇▇), to BofA Securities, Inc. at One Bryant Park, New York, NY 10036, Attention: DG ATM Execution (email: ▇▇.▇▇▇_▇▇▇▇▇▇▇▇▇@▇▇▇▇.▇▇▇), to Citigroup Global Markets Inc., at ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇▇▇, Attention: General Counsel (Facsimile: (▇▇▇) ▇▇▇-▇▇▇▇), to Credit Agricole Securities (USA) Inc. at ▇▇▇▇ ▇▇▇▇▇▇ ▇▇ ▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: Equity Capital Markets, Email: ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇@▇▇-▇▇▇.▇▇▇, to ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Co. LLC at ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Facsimile: (▇▇▇) ▇▇▇-▇▇▇▇, Attention: Registration Department, to ▇▇▇▇▇▇▇▇▇ LLC, ▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: General Counsel, with a copy to ▇▇▇▇▇▇▇▇▇▇▇@▇▇▇▇▇▇▇▇▇.▇▇▇, to ▇.▇. ▇▇▇▇▇▇ Securities LLC at ▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: ▇▇▇▇▇▇▇ ▇▇▇▇▇, Facsimile: (▇▇▇) ▇▇▇-▇▇▇▇, Email: ▇▇▇▇▇▇▇.▇.▇▇▇▇▇@▇▇▇▇▇▇▇▇.▇▇▇, to KeyBanc Capital Markets Inc. at ▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇, Attention: ▇▇▇▇▇ ▇▇▇▇▇ (▇▇▇▇▇▇@▇▇▇.▇▇▇), ▇▇▇▇▇▇▇ ▇▇▇▇▇ (▇▇▇▇▇▇▇.▇.▇▇▇▇▇@▇▇▇.▇▇▇), ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ (▇▇▇▇.▇▇▇▇▇▇▇▇▇@▇▇▇.▇▇▇) and ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ (▇▇▇▇▇▇.▇▇▇▇▇▇▇@▇▇▇.▇▇▇), Telephone: (▇▇▇) ▇▇▇-▇▇▇▇, to ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ & Co. LLC at ▇▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: Equity Syndicate Desk, with a copy to the Legal Department, to Mizuho Securities USA LLC at ▇▇▇▇ ▇▇▇▇▇▇ ▇▇ ▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: Equity Capital Markets Desk, Telephone: (▇▇▇) ▇▇▇-▇▇▇▇, Email: ▇▇-▇▇▇@▇▇▇▇▇▇▇▇▇▇▇.▇▇▇ with a copy to ▇▇▇▇▇▇▇▇▇▇▇▇@▇▇.▇▇▇▇▇▇-▇▇.▇▇▇, to Nomura Securities International, Inc. at Worldwide Plaza, ▇▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: Equity Capital Markets, Americas, email: ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇@▇▇▇▇▇▇.▇▇▇, Fax: (▇▇▇) ▇▇▇-▇▇▇▇ with a copy to the Head of IBD Legal, Fax: (▇▇▇) ▇▇▇-▇▇▇▇, to RBC Capital Markets, LLC, Attention: Equity Capital Markets, ▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇ ▇▇▇▇▇, by telephone at ▇▇▇-▇▇▇-▇▇▇▇ or by email at ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇@▇▇▇▇▇.▇▇▇, to ▇▇▇▇▇▇ ▇. ▇▇▇▇▇ & Co. Incorporated at ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇, attention of Syndicate Department, with a copy to the Legal Department (Fax: (▇▇▇) ▇▇▇-▇▇▇▇), and to Truist Securities, Inc. at ▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, Attention: Equity Capital Markets (email: ▇▇.▇▇▇.▇▇▇▇▇▇▇▇@▇▇▇▇▇▇.▇▇▇); and notices to the Company shall be directed to it at ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇, ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ (facsimile: (▇▇▇) ▇▇▇-▇▇▇▇), attention of Office of the General Counsel.

Section 19. Recognition of the U.S. Special Resolution Regimes.

(a) In the event that any Agent that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer from such Agent of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States.

(b) In the event that any Agent that is a Covered Entity or a BHC Act Affiliate of such Agent becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against such Agent are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States.

For purposes of this Section 19, a “BHC Act Affiliate” has the meaning assigned to the term “affiliate” in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k). “Covered Entity” means any of the following: (i) a “covered entity” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b); (ii) a “covered bank” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or (iii) a “covered FSI” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b). “Default Right” has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable. “U.S. Special Resolution Regime” means each of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the ▇▇▇▇-▇▇▇▇▇ ▇▇▇▇ Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

SECTION 3. No Further Amendment. The Agreement, as amended by the Amendment, is in all respects ratified and confirmed and all the terms, conditions, and provisions thereof shall remain in full force and effect. This Amendment is limited precisely as written and shall not be deemed to be an amendment to any other term or condition of the Agreement or any of the documents referred to therein.

SECTION 4. Governing Law. This Amendment and any claim, counterclaim, controversy or dispute of any kind or nature whatsoever arising out of or in any way relating to this Amendment, directly or indirectly, shall be governed by and construed in accordance with the laws of the State of New York.

SECTION 5. Counterparts. This Amendment may be signed in counterparts, each of which shall be an original and all of which together shall constitute one and the same instrument. Counterparts may be delivered via facsimile, electronic mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, e.g., ▇▇▇.▇▇▇▇▇▇▇▇.▇▇▇) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

SECTION 6. Headings. The headings herein are included for convenience of reference only and are not intended to be part of, or to affect the meaning or interpretation of, this Amendment.

[Signature pages follow]

If the foregoing correctly sets forth the understanding between the Company and each of the Agents, please so indicate in the space provided below for that purpose, whereupon this Amendment and your acceptance shall constitute a binding agreement among the Company and each of the Agents.

[Signature Page to Amendment No. 7 to the At Market Issuance Sales Agreement]

Accepted and agreed as of the date first above written:

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