ABY / Abengoa Yield plc - SEC-arkiveringar, Årsredovisning, Fullmaktsutlåtande

Abengoa Yield plc
US ˙ NASDAQ
DENNA SYMBOL ÄR INTE LÄNGRE AKTIV

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CIK 1601072
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Abengoa Yield plc
SEC Filings (Chronological Order)
Denna sida innehåller en komplett, kronologisk lista över SEC-arkiveringar, exklusive ägande-arkiveringar som vi tillhandahåller på andra ställen.
December 23, 2024 15-12G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of registrant

December 12, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

December 12, 2024 SC 13D/A

AY / Atlantica Sustainable Infrastructure plc / ALGONQUIN POWER & UTILITIES CORP. - SC 13D/A Activist Investment

SC 13D/A 1 d916272dsc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 14) Under the Securities Exchange Act of 1934 Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 3

December 10, 2024 EX-99.1

Acquisition by Energy Capital Partners and Co-Investors Approved by the High Court of Justice of England and Wales

Exhibit 99.1 Acquisition by Energy Capital Partners and Co-Investors Approved by the High Court of Justice of England and Wales December 10, 2024 – Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (“Atlantica” or the “Company”), announced today that the High Court of Justice of England and Wales (the “Court”) has sanctioned the scheme of arrangement providing for the proposed acquisition of t

December 10, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

November 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2024 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name

November 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

November 4, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

November 4, 2024 EX-99.1

Closing of Atlantica’s Acquisition by Energy Capital Partners and Co-Investors Expected December 12

Exhibit 99.1 Closing of Atlantica’s Acquisition by Energy Capital Partners and Co-Investors Expected December 12 November 4, 2024 – Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (“Atlantica” or the “Company”), announced today that the pending acquisition of the Company by Energy Capital Partners and a group of co-investors (the “Transaction”) is expected to close on December 12, 2024. All

August 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

August 14, 2024 EX-99.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC General Meeting of Shareholders August 8, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION

Exhibit 99.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC General Meeting of Shareholders August 8, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION I, the undersigned, the duly appointed Inspector of Election at the General Meeting of Shareholders (the “Meeting”) of Atlantica Sustainable Infrastructure plc (the “Company”), on August 8, 2024, hereby certify that: 1) Before entering upon the discharge of

August 14, 2024 EX-99.3

Atlantica Holds Shareholders’ Meetings to Approve its Acquisition by Energy Capital Partners and Co-Investors

Exhibit 99.3 Atlantica Holds Shareholders’ Meetings to Approve its Acquisition by Energy Capital Partners and Co-Investors August 8, 2024 – Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (“Atlantica” or the “Company”), announced today that it has completed the requisite meetings of its shareholders to approve its acquisition by Energy Capital Partners and a group of co-investors (the “Trans

August 14, 2024 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Court Meeting of Shareholders August 8, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Court Meeting of Shareholders August 8, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION I, the undersigned, the duly appointed Inspector of Election at the Court Meeting of Shareholders (the “Meeting”) of Atlantica Sustainable Infrastructure plc (the “Company”), on August 8, 2024, hereby certify that: 1) Before entering upon the discharge of my

August 1, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number 001-36487

6-K 1 ef200334076k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation

August 1, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

July 16, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

July 16, 2024 EX-99.1

Atlantica Publishes Scheme Circular and Announces the Shareholder Meetings to Vote on its Acquisition by ECP and Co-Investors Will Be Held on August 8, 2024

Exhibit 99.1 Atlantica Publishes Scheme Circular and Announces the Shareholder Meetings to Vote on its Acquisition by ECP and Co-Investors Will Be Held on August 8, 2024 July 16, 2024 – Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (“Atlantica” or the “Company”) announced today that it has published a scheme circular (the “Scheme Circular”) regarding the shareholder meetings to be held to

July 16, 2024 EX-99.4

EX-99.4

Exhibit 99.4

July 16, 2024 EX-99.2

Recommended acquisition of ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC CALIFORNIA BUYER LIMITED a newly incorporated company controlled by funds managed by affiliates of ECP V, LLC to be effected by means of a scheme of arrangement under Part 26 of the

TABLE OF CONTENTS Exhibit 99.2 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. THIS DOCUMENT CONTAINS A PROPOSAL WHICH, IF IMPLEMENTED, WILL RESULT IN THE CANCELLATION OF THE LISTING OF ATLANTICA SHARES ON THE NASDAQ GLOBAL SELECT MARKET. PART II (EXPLANATORY STATEMENT) OF THIS DOCUMENT COMPRISES AN EXPLANATORY STATEMENT IN COMPLIANCE WITH SECTION 897 OF THE COMPANIES ACT 2006. I

July 16, 2024 EX-99.3

EX-99.3

Exhibit 99.3

May 28, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into E

May 28, 2024 EX-99.2

VOTING AND TRANSACTION SUPPORT AGREEMENT

Exhibit 99.2 EXECUTION VERSION VOTING AND TRANSACTION SUPPORT AGREEMENT THIS VOTING AND TRANSACTION SUPPORT AGREEMENT (this “Agreement”) is made and entered into as of May 27, 2024, by and among California Buyer Limited, a private limited company incorporated in England and Wales (“Bidco”), Atlantica Sustainable Infrastructure plc, a public limited company incorporated in England and Wales (the “C

May 28, 2024 EX-99.5

1

Exhibit 99.5 Atlantica Enters into Agreement to be Acquired by Energy Capital Partners and Co-Investors May 28, 2024 – Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (“Atlantica” or the “Company”), announced today that it has entered into a definitive agreement (the “Transaction Agreement”) pursuant to which a private limited company incorporated in England and Wales (“Bidco”) has agreed, s

May 28, 2024 EX-99.1

VOTING AND TRANSACTION SUPPORT AGREEMENT

EX-99.1 2 d840513dex991.htm EX-99.1 Exhibit 99.1 EXECUTION VERSION VOTING AND TRANSACTION SUPPORT AGREEMENT THIS VOTING AND TRANSACTION SUPPORT AGREEMENT (this “Agreement”) is made and entered into as of May 27, 2024, by and among California Buyer Limited, a private limited company incorporated in England and Wales (“Bidco”), Atlantica Sustainable Infrastructure plc, a public limited company incor

May 28, 2024 SC 13D/A

AY / Atlantica Sustainable Infrastructure plc / ALGONQUIN POWER & UTILITIES CORP. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 13) Under the Securities Exchange Act of 1934 Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakvi

May 28, 2024 EX-99.3

(Signature Page Follows)

Exhibit 99.3 EXECUTION VERSION May 27, 2024 Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakville, Ontario L6J 2X1 Canada and Liberty Development Energy Solutions B.V. 354 Davis Road, Suite 100 Oakville, Ontario L6J 2X1 Canada Attention: Christopher Huskilson Chief Executive Officer Copy: Jennifer Tindale Chief Legal Officer Michael J. Aiello David Avery-Gee Matthew J. Gilroy Naomi

May 28, 2024 EX-99.4

FORM OF VOTING AND TRANSACTION SUPPORT AGREEMENT

Exhibit 99.4 FORM OF VOTING AND TRANSACTION SUPPORT AGREEMENT THIS VOTING AND TRANSACTION SUPPORT AGREEMENT (this “Agreement”) is made and entered into as of May , 2024, by and among California Buyer Limited, a private limited company incorporated in England and Wales (“Bidco”), and the undersigned shareholder (the “Shareholder”) of Atlantica Sustainable Infrastructure plc, a public limited compan

May 28, 2024 EX-99.2

(Signature Page Follows)

EX-99.2 3 d840513dex992.htm EX-99.2 Exhibit 99.2 EXECUTION VERSION May 27, 2024 Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakville, Ontario L6J 2X1 Canada and Liberty Development Energy Solutions B.V. 354 Davis Road, Suite 100 Oakville, Ontario L6J 2X1 Canada Attention: Christopher Huskilson Chief Executive Officer Copy: Jennifer Tindale Chief Legal Officer Michael J. Aiello Davi

May 28, 2024 EX-99.1

TRANSACTION AGREEMENT by and between CALIFORNIA BUYER LIMITED ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC

Exhibit 99.1 EXECUTION VERSION TRANSACTION AGREEMENT by and between CALIFORNIA BUYER LIMITED and ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC dated as of May 27, 2024 ARTICLE I THE TRANSACTION Section 1.1 The Transaction 2 Section 1.2 Closing 2 Section 1.3 Delivery of Court Order 2 ARTICLE II TRANSFER OF SCHEME SHARES Section 2.1 Transfer of Scheme Shares 2 Section 2.2 Changes to Company Shares 3 Sect

May 8, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into E

May 8, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into E

May 8, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into E

April 19, 2024 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 15, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 15, 2024 FINAL REPORT OF THE INSPECTOR OF ELECTION I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the “Meeting”) of Atlantica Sustainable Infrastructure plc (the “Company”), on April 15, 2024, hereby certify that: 1) Before entering upon th

April 19, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into

March 15, 2024 EX-99.1

Atlantica Sustainable Infrastructure plc

Exhibit 99.1 Notice of Annual General Meeting 2024 Atlantica Sustainable Infrastructure plc Notice of Annual General Meeting (Incorporated and registered in England and Wales under number 08818211) Notice of the 2024 Annual General Meeting of Atlantica Sustainable Infrastructure plc to be held at 8:30 am ET time (1:30 pm London time) on 15 April 2024 at Bay Adelaide Centre, 333 Bay Street, Suite 8

March 15, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into

March 14, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into

March 14, 2024 EX-99.1

Science Based Targets initiative (SBTi) approved target: Reduce Scope 1 and 2 GHG emissions per kWh of energy generated by 70% by 2035 from a 2020 base year

Exhibit 99.1 Content Atlantica in Two Minutes 3 Our Purpose and Values 5 About This Report 6 Strategic Report 11 Our Sustainable Business Model and Strategy 12 Events During the Period 20 Key Performance Indicators 30 A Fair Review of the Business 33 Financial Review 38 Principal Risks and Uncertainties 56 ESG Materiality Analysis 74 Environmental Sustainability 80 Social Sustainability 117 Asset

March 1, 2024 EX-12.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not cont

March 1, 2024 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2023 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

March 1, 2024 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333-258395) of Atlantica Sustainable Infrastructure plc and in the related Prospectus of our reports dated February 29, 2024, with respect to the consolidated financial statements of Atlantica Sustainable Infrastructure plc, and the effectiv

March 1, 2024 EX-97.1

2

Exhibit 97.1 Clawback Policy The Company has an incentive compensation recoupment or clawback policy since 2021 and in 2023 has adopted provisions to comply with the requirements of Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the relevant Nasdaq Stock Market rules. The policy is aimed at allowing the Company to recover performance-based compensation during the

March 1, 2024 EX-12.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any un

March 1, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2024 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name

March 1, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name i

March 1, 2024 EX-2.1

Description of Securities

Exhibit 2.1 Description of Securities The following description of our share capital is a summary of the material terms of our articles of association (the “Articles”) and applicable provisions of law. We have summarized certain portions of the Articles below. The Articles have been filed as exhibits to our Annual Report filed on Form 20-F. You should read the Articles for the provisions that are

March 1, 2024 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

November 13, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not Applicable (Translation of Registrant’s name i

November 8, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not Applicable (Translation of Registrant’s name i

November 8, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

August 31, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

August 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

August 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2023 Commission File Number 001-364

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name in

August 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2023 Commission File Number 001-364

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name in

May 31, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into E

May 31, 2023 EX-4.24

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.24 EIGHT AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of May 30, 2023 (this "Amendment"), among (i) Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211, as borrower (the "Borrower") under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified f

May 5, 2023 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A (Amendment No. 1) REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A (Amendment No. 1) REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Reg

May 5, 2023 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 13, 2023 FINAL REPORT OF THE INSPECTOR OF ELECTION

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 13, 2023 FINAL REPORT OF THE INSPECTOR OF ELECTION I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the “Meeting”) of Atlantica Sustainable Infrastructure plc (the “Company”), on April 13, 2023, hereby certify that: 1) Before entering upon th

May 5, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 5, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 5, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into E

April 24, 2023 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 13, 2023 FINAL REPORT OF THE INSPECTOR OF ELECTION

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders April 13, 2023 FINAL REPORT OF THE INSPECTOR OF ELECTION I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the “Meeting”) of Atlantica Sustainable Infrastructure plc (the “Company”), on April 13, 2023, hereby certify that: 1) Before entering upon th

April 24, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2023 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

March 1, 2023 EX-12.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not cont

March 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2023 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name int

March 1, 2023 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333-258395) of Atlantica Sustainable Infrastructure plc and in the related Prospectus of our reports dated February 28, 2023, with respect to the consolidated financial statements of Atlantica Sustainable Infrastructure plc, and the effectiv

March 1, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2023 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name int

March 1, 2023 EX-12.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any un

March 1, 2023 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2022 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

March 1, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

February 21, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2023 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2023 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name

November 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name i

November 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2022 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name

November 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number 001-36

6-K 1 brhc100439226k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Trans

August 3, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

August 3, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2022 Commission File Number 001-364

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name in

August 3, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2022 Commission File Number 001-364

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name in

May 17, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name into

May 17, 2022 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders May 5, 2022 Final Report of the Inspector of Election

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders May 5, 2022 Final Report of the Inspector of Election I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the ?Meeting?) of Atlantica Sustainable Infrastructure plc (the ?Company?), on May 5, 2022, hereby certify that: 1) Before entering upon the disc

May 10, 2022 SC 13D/A

AY / Atlantica Yield plc / ALGONQUIN POWER & UTILITIES CORP. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 12) Under the Securities Exchange Act of 1934 Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakvi

May 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number 001-36487 A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into E

May 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name into

May 9, 2022 EX-1

AMENDMENT AGREEMENT

Exhibit 1.1 EXECUTION VERSION AMENDMENT AGREEMENT This AMENDMENT AGREEMENT (the ?Amendment Agreement?) is dated May 9, 2022 and made between Atlantica Sustainable Infrastructure plc (the ?Company?) and BofA Securities Inc., MUFG Securities Americas Inc. and RBC Capital Markets, LLC (the ?Agents?). Capitalized terms used herein and not otherwise defined herein shall have the meaning assigned to suc

May 9, 2022 EX-4.26

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.26 SEVENTH AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of May 5, 2022 (this ?Amendment?), among (i) Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211, as borrower (the ?Borrower?) under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified

May 9, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487

6-K 1 brhc100372746k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translati

March 24, 2022 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F/A for the year ended December 31, 2021 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934

March 24, 2022 20-F/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F/A (Amendment No. 1) (Mark One)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F/A (Amendment No. 1) (Mark One) ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) O

March 24, 2022 EX-12.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F/A (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any

March 24, 2022 EX-15.1

Consent of Independent Registered Public Accounting Firm

EX-15.1 5 brhc10035548ex15-1.htm EXHIBIT 15.1 Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333- 258395) of Atlantica Sustainable Infrastructure plc and in the related Prospectus of our report dated February 27, 2022, with respect to the consolidated financial statements of Atlantica Su

March 24, 2022 EX-12.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Sustainable Infrastructure plc (the ?Company?) certify that: 1. I have reviewed this annual report on Form 20-F/A (the ?Annual Report?) of the Company; 2. Based on my knowledge, this Annual Report does not co

March 18, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2022 Commission File Number 001-3648

6-K 1 ny20002955x36k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Tr

March 18, 2022 EX-99.1

Atlantica Sustainable Infrastructure plc Notice of Annual General Meeting (Incorporated and registered in England and Wales under number 08818211)

Exhibit 99.1 Notice of Annual General Meeting 2022 Atlantica Sustainable Infrastructure plc Notice of Annual General Meeting (Incorporated and registered in England and Wales under number 08818211) Notice of the 2022 Annual General Meeting of Atlantica Sustainable Infrastructure plc to be held at 2:00 pm London time (3:00 pm Madrid time, 9:00 am Toronto time) on 5 May 2022 at Great West House, GW1

February 28, 2022 EX-12.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC

Exhibit 12.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any un

February 28, 2022 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

February 28, 2022 EX-4.22

W I T N E S S E T H:

Exhibit 4.22 This Amendment No. 1 to Note Issuance Facility Agreement, dated as of March 30, 2021 (this "Amendment"), is among (i) Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211 (the "Company"), (ii) Lucid Agency Services Limited, on behalf of the Required Holders and as agent for the Purchasers (in such capacity, the "Agent"), (i

February 28, 2022 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2020 (the ?Annual Report?) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

February 28, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-3

6-K 1 ny20002955x16k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable

February 28, 2022 EX-4.20

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.20 EXECUTION VERSION FIFTH AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of December 3, 2020 (this "Amendment"), among (i) Atlantica Sustainable Infrastructure plc (f/k/a Atlantica Yield PLC), as borrower (the "Borrower") under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time prior t

February 28, 2022 EX-FILING FEES

CALCULATION OF REGISTRATION FILING FEE (Form Type) Atlantica Sustainable Infrastructure plc Table 1: Newly Registered and Carry Forward Securities

EX-FILING FEES 2 ny20002955x2ex107.htm FILING FEES TABLE Exhibit 107 CALCULATION OF REGISTRATION FILING FEE   424(b)(5) (Form Type) Atlantica Sustainable Infrastructure plc   Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Regis

February 28, 2022 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333?258395) of Atlantica Sustainable Infrastructure plc and in the related Prospectus of our reports dated February 27, 2022, with respect to the consolidated financial statements of Atlantica Sustainable Infrastructure plc, and the effectiv

February 28, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name

February 28, 2022 EX-1.1

DISTRIBUTION AGREEMENT

Exhibit 1.1 DISTRIBUTION AGREEMENT February 28, 2022 BofA Securities Inc. One Bryant Park New York, New York 10036 MUFG Securities Americas Inc. 1221 Avenue of the Americas, 6th Floor New York, New York 10020 RBC Capital Markets, LLC 200 Vesey Street, 8th Floor New York, New York 10281 Ladies and Gentlemen: Atlantica Sustainable Infrastructure plc, registered in England and Wales with the company

February 28, 2022 EX-12.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC

Exhibit 12.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Sustainable Infrastructure plc (the ?Company?) certify that: 1. I have reviewed this annual report on Form 20-F (the ?Annual Report?) of the Company; 2. Based on my knowledge, this Annual Report does not cont

February 28, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2022 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name

February 28, 2022 EX-2.1

Description of Securities

Exhibit 2.1 Description of Securities The following description of our share capital is a summary of the material terms of our articles of association (the ?Articles?) and applicable provisions of law. We have summarized certain portions of the Articles below. The Articles have been filed as exhibits to our Annual Report filed on Form 20-F. You should read the Articles for the provisions that are

February 28, 2022 424B5

PROSPECTUS SUPPLEMENT (To prospectus dated August 3, 2021) Up to $150,000,000 of Ordinary Shares of

TABLE OF CONTENTS Filed pursuant to Rule 424(b)(5) Registration No. 333-258395 PROSPECTUS SUPPLEMENT ? (To prospectus dated August 3, 2021) ? Up to $150,000,000 of Ordinary Shares of ? Atlantica Sustainable Infrastructure plc We have entered into a distribution agreement with BofA Securities, Inc., MUFG Securities Americas Inc. and RBC Capital Markets LLC, as our sales agents, under which we may o

November 10, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number 001-36

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name i

November 10, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2021 Commission File Number 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name

November 10, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November , 2021 Commission File Number 001-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November , 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name

August 4, 2021 SC 13D/A

AY / Atlantica Yield plc / ALGONQUIN POWER & UTILITIES CORP. - AMENDMENT NO. 11 TO SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 11) Under the Securities Exchange Act of 1934 Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakville, ON L

August 4, 2021 EX-99.1

ATM PLAN LETTER AGREEMENT

Exhibit 99.1 ATM PLAN LETTER AGREEMENT August 3, 2021 Algonquin Power & Utilities Corp. (?AQN?) 354 Davis Road, Suite 100 Oakville, Ontario, L6J 2X1 Canada Attention: Arun Banskota Chief Executive Officer CC: Jennifer Tindale Chief Legal Officer Michael J. Aiello David Avery-Gee Matthew Gilroy Weil, Gotshal & Manges LLP Dear Mr. Banskota: Atlantica Sustainable Infrastructure plc (the ?Company?) in

August 3, 2021 EX-1.1

DISTRIBUTION AGREEMENT

EX-1.1 2 brhc10027306ex1-1.htm EXHIBIT 1.1 Exhibit 1.1 Execution Version DISTRIBUTION AGREEMENT August 3, 2021 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Ladies and Gentlemen: Atlantica Sustainable Infrastructure plc, registered in England and Wales with the company number 08818211 and having its registered office at Great West House (Gw1), Great West Road, Brentford TW

August 3, 2021 EX-4.29

ATM PLAN LETTER AGREEMENT

Exhibit 4.29 EXECUTION VERSION ATM PLAN LETTER AGREEMENT August 3, 2021 Algonquin Power & Utilities Corp. (?AQN?) 354 Davis Road, Suite 100 Oakville, Ontario, L6J 2X1 Canada Attention: Arun Banskota Chief Executive Officer CC: Jennifer Tindale Chief Legal Officer Michael J. Aiello David Avery-Gee Matthew Gilroy Weil, Gotshal & Manges LLP Dear Mr. Banskota: Atlantica Sustainable Infrastructure plc

August 3, 2021 424B5

Title of each class of securities to be registered

TABLE OF CONTENTS Filed pursuant to Rule 424(b)(5) Registration No. 333-258395 CALCULATION OF REGISTRATION FEE Title of each class of securities to be registered ? ? Proposed Maximum Aggregate Offering Price(1) ? ? Amount of Registration Fee(1) Ordinary Shares, nominal value $0.10 per share ? ? US$150,000,000 ? ? US$16,365 (1) Calculated in accordance with Rules 457(o) and 457(r) under the U.S. Se

August 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2021 Commission File Number 001-364

6-K 1 brhc100275036k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Transl

August 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2021 Commission File Number 001-364

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant?s name in

August 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number 001-3648

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name int

August 3, 2021 F-3ASR

As filed with the Securities and Exchange Commission on August 3, 2021

As filed with the Securities and Exchange Commission on August 3, 2021 Registration No.

June 17, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2021 Commission File Number 001-36487

6-K 1 brhc100259196k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translat

May 24, 2021 EX-4.28

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC, AS ISSUER ATLANTICA PERU S.A. ACT HOLDING, S.A. DE C.V. ATLANTICA INFRAESTRUCTURA SOSTENIBLE, S.L.U. ATLANTICA INVESTMENTS LIMITED ATLANTICA NEWCO LIMITED ATLANTICA NORTH AMERICA LLC AS GUARANTORS BNY MELLON

Exhibit 4.28 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC, AS ISSUER ATLANTICA PERU S.A. ACT HOLDING, S.A. DE C.V. ATLANTICA INFRAESTRUCTURA SOSTENIBLE, S.L.U. ATLANTICA INVESTMENTS LIMITED ATLANTICA NEWCO LIMITED ATLANTICA NORTH AMERICA LLC AS GUARANTORS BNY MELLON CORPORATE TRUSTEE SERVICES LIMITED AS TRUSTEE THE BANK OF NEW YORK MELLON, LONDON BRANCH AS PAYING AGENT AND THE BANK OF NEW YORK MELLON

May 24, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name into

May 19, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name into

May 14, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 14, 2021 EX-99.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders May 4, 2021 Final Report of the Inspector of Election

Exhibit 99.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Annual General Meeting of Shareholders May 4, 2021 Final Report of the Inspector of Election I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the ?Meeting?) of Atlantica Sustainable Infrastructure plc (the ?Company?), on May 4, 2021 hereby certify that: 1) Before entering upon the disch

May 13, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name into

May 7, 2021 SC 13G/A

SC 13G/A

gb00blp5yb54050621.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1 ) ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC - (Name of Issuer) Common Stock - (Title of Class of Securities) BLP5YB5 - (SEDOL Number) April 30, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate th

May 6, 2021 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100241766k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translati

May 6, 2021 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100241706k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translati

May 6, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name into E

April 8, 2021 EX-99.1

Atlantica Announces an Agreement to Acquire a 49% Interest in a 596 MW Wind Portfolio in the US

Exhibit 99.1 Atlantica Announces an Agreement to Acquire a 49% Interest in a 596 MW Wind Portfolio in the US April 8, 2021 ? Atlantica Sustainable Infrastructure plc (NASDAQ: AY) (?Atlantica?), the sustainable infrastructure company that owns a diversified portfolio of contracted assets in the energy and environment sectors, announced today that it has reached an agreement to acquire a 49% interes

April 8, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name int

March 30, 2021 EX-99.1

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 99.1 EXECUTION COPY SIXTH AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of March 1, 2021 (this ?Amendment?), among (i) Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211, as borrower (the ?Borrower?) under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or othe

March 30, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant?s name int

March 18, 2021 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100219166k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Transla

March 18, 2021 EX-99.1

Notice of Atlantica Sustainable Infrastructure plc Annual General Meeting 2021https://www.atlantica.com/web/en/investors/shareholders-general-meetings/2020/ and Financial Statements

Exhibit 99.1 Notice of Atlantica Sustainable Infrastructure plc Annual General Meeting 2021https://www.atlantica.com/web/en/investors/shareholders-general-meetings/2020/ and Financial Statements Notice of Annual General Meeting 2021 Atlantica Sustainable Infrastructure plc Notice of Annual General Meeting (incorporated and registered in England and Wales under number 08818211) Notice of the 2021 A

March 1, 2021 EX-2.1

Description of Securities

Exhibit 2.1 Description of Securities The following description of our share capital is a summary of the material terms of our articles of association (the ?Articles?) and applicable provisions of law. We have summarized certain portions of the Articles below. The Articles have been filed as exhibits to our Annual Report filed on Form 20-F. You should read the Articles for the provisions that are

March 1, 2021 EX-12.1

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Sustainable Infrastructure plc (the ?Company?) certify that: 1. I have reviewed this annual report on Form 20-F (the ?Annual Report?) of the Company; 2. Based on my knowledge, this Annual Report does not contain any un

March 1, 2021 EX-12.2

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Sustainable Infrastructure plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not cont

March 1, 2021 EX-15.1

Consent of Independent Registered Public Accounting Firm

EX-15.1 7 brhc10020710ex15-1.htm EXHIBIT 15.1 Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333-226611) of our reports dated February 27, 2021, with respect to the consolidated statements of financial position as of December 31, 2020 and 2019 and the related consolidated income statemen

March 1, 2021 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2020 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

March 1, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 1, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name i

March 1, 2021 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100209816k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2021 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Transla

March 1, 2021 EX-15.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

EX-15.2 8 brhc10020710ex15-2.htm EXHIBIT 15.2 Exhibit 15.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-226611 on Form F-3 of our report dated February 26, 2019, relating to the consolidated financial statements of Atlantica Sustainable Infrastructure plc and subsidiaries, appearing in this Annual Report on

March 1, 2021 20-F

- 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

January 7, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 10) Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per sha

Amendment No. 10 to Schedule 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 10) Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Dav

December 14, 2020 6-K

Current Report of Foreign Issuer - FORM 6K

6-K 1 nt10017932x16k.htm FORM 6K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 December 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Reg

December 11, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 December 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Grea

December 10, 2020 EX-99.1

9 DECEMBER 2020 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC as the Company ALGONQUIN POWER & UTILITIES CORP. as AQN SUBSCRIPTION AGREEMENT RELATING TO ORDINARY SHARES IN ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Skadden, Arps, Slate, Meagher & Flom (UK)

EX-99.1 Exhibit 99.1 EXECUTION VERSION 9 DECEMBER 2020 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC as the Company and ALGONQUIN POWER & UTILITIES CORP. as AQN SUBSCRIPTION AGREEMENT RELATING TO ORDINARY SHARES IN ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC Skadden, Arps, Slate, Meagher & Flom (UK) LLP 40 Bank Street Canary Wharf London E14 5DS CONTENTS Clause Page 1. DEFINITIONS AND INTERPRETATION 1 2.

December 10, 2020 SC 13D/A

GB:AY / Atlantica Yield plc / Algonquin Power & Utilities Corp. - AMENDMENT NO. 9 TO SCHEDULE 13D Activist Investment

Amendment No. 9 to Schedule 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 9) Under the Securities Exchange Act of 1934 Atlantica Sustainable Infrastructure plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis

December 9, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 nt10017623x36k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 December 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registr

December 8, 2020 424B5

Subject to Completion Preliminary Prospectus dated December 8, 2020

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

December 8, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 December 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Grea

November 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100166756k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Tran

November 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100166776k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Tran

November 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100161046k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Trans

November 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100166556k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Tran

November 6, 2020 EX-4.26

W I T N E S S E T H:

Exhibit 4.26 This Amendment No. 2 to Note Issuance Facility Agreement, dated as of October 23, 2020 (this “Amendment”), is among Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211 (the “Company”) and Lucid Agency Services Limited, on behalf of the Required Holders and as agent for the Purchasers (in such capacity, the “Agent”). W I T

November 6, 2020 EX-4.25

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.25 EXECUTION VERSION FOURTH AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of August 28, 2020 (this "Amendment"), among (i) Atlantica Sustainable Infrastructure plc (f/k/a Atlantica Yield PLC), as borrower (the "Borrower") under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time prior t

November 6, 2020 EX-4.25

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.25 EXECUTION VERSION FOURTH AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of August 28, 2020 (this "Amendment"), among (i) Atlantica Sustainable Infrastructure plc (f/k/a Atlantica Yield PLC), as borrower (the "Borrower") under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time prior t

November 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100161046k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Trans

November 6, 2020 EX-4.26

W I T N E S S E T H:

Exhibit 4.26 This Amendment No. 2 to Note Issuance Facility Agreement, dated as of October 23, 2020 (this “Amendment”), is among Atlantica Sustainable Infrastructure plc, a company incorporated in England and Wales with company number 08818211 (the “Company”) and Lucid Agency Services Limited, on behalf of the Required Holders and as agent for the Purchasers (in such capacity, the “Agent”). W I T

November 6, 2020 EX-99.1

Three-month period ended September 30,

Exhibit 99.1 Atlantica Reports Third Quarter 2020 Financial Results • Net profit attributable to the Company for the nine-month period of 2020 was $61.2 million, compared with $60.8 million in the same period of 2019. • Adjusted EBITDA including unconsolidated affiliates1 was $621.0 million for the nine-month period of 2020, representing a 5.6% decrease compared with the same period in 2019. • Cas

October 9, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name i

August 3, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name in

August 3, 2020 EX-4.22

ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED, as Issuer ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC, as Guarantor BNY MELLON CORPORATE TRUSTEE SERVICES LIMITED, as Trustee THE BANK OF NEW YORK MELLON, LONDON BRANCH, as Paying Agent and Exchange A

Exhibit 4.22 ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED, as Issuer ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC, as Guarantor BNY MELLON CORPORATE TRUSTEE SERVICES LIMITED, as Trustee THE BANK OF NEW YORK MELLON, LONDON BRANCH, as Paying Agent and Exchange Agent and THE BANK OF NEW YORK MELLON SA/NV, LUXEMBOURG BRANCH, as Note Registrar and Transfer Agent INDENTURE Dated as of July 17, 2020 4

August 3, 2020 EX-4.21

ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED (the “Company”)

EX-4.21 2 brhc10013788ex4-21.htm EXHIBIT 4.21 Exhibit 4.21 ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED (the “Company”) We, the undersigned, being the sole member of the Company as at the date when the following resolutions (the “Resolutions”) are deemed passed, HEREBY RESOLVE that the following Resolutions be and are hereby approved as special resolutions of the Company, such Resolutions b

August 3, 2020 EX-4.24

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2027 NOTE ISSUANCE FACILITY AGREEMENT Dated July 8, 2020 TABLE OF CONTENTS Article 1 Authorization of Notes; Interest

EX-4.24 5 brhc10013788ex4-24.htm EXHIBIT 4.24 Exhibit 4.24 Execution version ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2027 NOTE ISSUANCE FACILITY AGREEMENT Dated July 8, 2020 TABLE OF CONTENTS Article 1 Authorization of Notes; Interest Section 1.1 Authorization of Notes 1 Section 1.2 Interest 1 Article 2 Issue and Subscription of Notes

August 3, 2020 EX-4.23

ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC DEED POLL relating to ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED 4.00 % GREEN EXCHANGEABLE SENIOR NOTES DUE 2025

Exhibit 4.23 ATLANTICA SUSTAINABLE INFRASTRUCTURE PLC DEED POLL relating to ATLANTICA SUSTAINABLE INFRASTRUCTURE JERSEY LIMITED 4.00 % GREEN EXCHANGEABLE SENIOR NOTES DUE 2025 99 Bishopsgate London EC2M 3XF United Kingdom Tel: +44.20.7710.1000 www.lw.com THIS DEED POLL (the “Deed Poll”) is executed as a deed on 17 July 2020 in favour of the Issuer (as defined below) and the holders of Preference S

August 3, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name in

August 3, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 brhc100139646k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as specified in its charter) Not applicable (Transl

July 17, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

July 14, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

July 14, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

July 14, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 13, 2020 EX-99.1

ATLANTICA YIELD PLC Annual General Meeting of Shareholders May 5, 2020 Final Report of the Inspector of Election

Exhibit 99.1 ATLANTICA YIELD PLC Annual General Meeting of Shareholders May 5, 2020 Final Report of the Inspector of Election I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the “Meeting”) of Atlantica Yield plc (the “Company”), on May 5, 2020 hereby certify that: 1) Before entering upon the discharge of my duties as Inspector of Election

May 13, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2020 Commission File Number 001-36487 Atlantica Sustainable Infrastructure plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 7, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into

May 7, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great West H

May 7, 2020 EX-4.20

Atlantica Yield plc 1.96% Senior Notes due June 20, 2026 Note Purchase Agreement Dated March 20, 2020

EX-4.20 2 ex420.htm EXHIBIT 4.20 Exhibit 4.20 EXECUTION VERSION Atlantica Yield plc €290,000,000 1.96% Senior Notes due June 20, 2026 Note Purchase Agreement Dated March 20, 2020 Table of Contents Section Heading Page Section 1. Authorization of Notes; Increased Interest 1 Section 1.1. Authorization of the Notes 1 Section 1.2. Increased Interest 1 Section 2. Sale and Purchase of Notes 2 Section 3.

May 7, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

May 6, 2020 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

April 30, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West

April 22, 2020 EX-99.1

Atlantica Yield plc

Exhibit 99.1 Atlantica Yield plc (incorporated and registered in England and Wales under company number 08818211) Supplement to Notice of Annual General Meeting Dear Shareholder, I am writing to you further to Atlantica Yield plc’s (the “Company” or “Atlantica”) Notice of Annual General Meeting 2020 (the “AGM”), which was recently sent to you (the “AGM Notice”). This supplement to the AGM Notice s

April 22, 2020 EX-99.2

Atlantica Yield plc (incorporated and registered in England and Wales under company number 08818211) Supplement to Notice of Annual General Meeting

Exhibit 99.2 Atlantica Yield plc (incorporated and registered in England and Wales under company number 08818211) Supplement to Notice of Annual General Meeting Dear Shareholder, I am writing to you further to Atlantica Yield plc’s (the “Company”) Notice of Annual General Meeting 2020 (the “AGM”), which was recently sent to you (the “AGM Notice”). This supplement to the AGM Notice should be read i

April 22, 2020 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West

April 6, 2020 SC 13D/A

AY / Atlantica Yield plc / Algonquin Power & Utilities Corp. - AMENDMENT NO. 8 TO SCHEDULE 13D Activist Investment

Amendment No. 8 to Schedule 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 8) Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakv

April 2, 2020 EX-99.1

Notice of Atlantica Yield plc Annual General Meeting 2020 https://www.atlanticayield.com/web/en/investors/shareholders-general-meetings/2020/ and Financial Statements FOR THE YEAR ENDED DECEMBER 31, 2019 Company Registration nº 08818211 Atlantica Yie

EX-99.1 2 ex991.htm EXHIBIT 99.1 Exhibit 99.1 Notice of Atlantica Yield plc Annual General Meeting 2020 https://www.atlanticayield.com/web/en/investors/shareholders-general-meetings/2020/ and Financial Statements FOR THE YEAR ENDED DECEMBER 31, 2019 Company Registration nº 08818211 Atlantica Yield plc Notice of Annual General Meeting 2020 Atlantica Yield plc Notice of Annual General Meeting (incor

April 2, 2020 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West

March 23, 2020 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West

February 28, 2020 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement (Form F-3 No. 333-226611) of our reports dated February 26, 2020, with respect to the consolidated statement of financial position as of December 31, 2019, the related consolidated income statement, the consolidated statement of comprehensive income, the

February 28, 2020 EX-12.1

ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Yield plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any untrue statement of a material fact or omit

February 28, 2020 EX-4.14

Execution version ATLANTICA YIELD PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2025 NOTE ISSUANCE FACILITY AGREEMENT Dated April 30, 2019 TABLE OF CONTENTS

Exhibit 4.14 Execution version ATLANTICA YIELD PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2025 NOTE ISSUANCE FACILITY AGREEMENT Dated April 30, 2019 TABLE OF CONTENTS Article 1 Authorization of Notes; Interest Section 1.1 Authorization of Notes 1 Section 1.2 Interest 1 Section 1.3 Capitalization. 2 Article 2 Issue and Subscription of Notes Article 3 Closing Section 3.1 Clos

February 28, 2020 20-F

ABY / Abengoa Yield plc 20-F - - 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

February 28, 2020 EX-4.19

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.19 THIRD AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of December 12, 2019 (this “Amendment”), among (i) Atlantica Yield PLC, as borrower (the “Borrower”) under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), among the Borrower, the Guarantors, the L/C Iss

February 28, 2020 EX-15.3

INDEPENDENT AUDITORS’ CONSENT

Exhibit 15.3 INDEPENDENT AUDITORS’ CONSENT We consent to the incorporation by reference in Registration Statement No. 333-226611 on Form F-3 of our report dated February 27, 2018, relating to the financial statements of Myah Bahr Honaine S.p.a. for the year ended December 31, 2017 (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the fact that the acc

February 28, 2020 EX-12.2

ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Yield plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any untrue statement of a material fac

February 28, 2020 EX-15.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 15.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-226611 on Form F-3 of our report dated February 26, 2019, relating to the consolidated financial statements of Atlantica Yield plc and subsidiaries, appearing in this Annual Report on Form 20-F for the year ended December 31, 2019. /s/ Deloitte, S.L.

February 28, 2020 EX-99.1

INDEPENDENT AUDITORS’ REPORT

Exhibit 99.1 INDEPENDENT AUDITORS’ REPORT To the Board of Directors and Shareholders of Atlantica Yield plc: We have audited the accompanying statements of income, comprehensive income, changes in equity and cash flows for the year ended December 31, 2017 and the related notes to the financial statements of Myah Bahr Honaine S.p.a. (the “Company”). Management’s Responsibility for the Financial Sta

February 28, 2020 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2019 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

February 27, 2020 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great W

February 27, 2020 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2020 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great W

November 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great W

November 7, 2019 EX-4.18

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.18 SECOND AMENDMENT TO CREDIT AND GUARANTY AGREEMENT, dated as of August 2, 2019 (this "Amendment"), among (i) Atlantica Yield PLC, as borrower (the "Borrower") under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time, the "Credit Agreement"), among the Borrower, the Guarantors, the L/C Issue

November 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name

November 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great W

August 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great Wes

August 7, 2019 EX-99.2

9 May 2019 SUBSCRIPTION AGREEMENT relating to ordinary shares in Atlantica Yield plc Atlantica Yield plc as Issuer Algonquin Power & Utilities Corp. as Investor Subscription Agreement

Exhibit 99.2 Execution Version 9 May 2019 SUBSCRIPTION AGREEMENT relating to ordinary shares in Atlantica Yield plc between Atlantica Yield plc as Issuer and Algonquin Power & Utilities Corp. as Investor Subscription Agreement Between: (1) Atlantica Yield plc, a public limited company organized and existing under the laws of England and Wales, United Kingdom; hereinafter referred to as the “Issuer

August 7, 2019 EX-99.1

ENHANCED COOPERATION AGREEMENT – by and among – ALGONQUIN POWER & UTILITIES CORP. ABENGOA-ALGONQUIN GLOBAL ENERGY SOLUTIONS B.V. – and – ATLANTICA YIELD PLC Dated 9 May 2019

Exhibit 99.1 Execution Version ENHANCED COOPERATION AGREEMENT – by and among – ALGONQUIN POWER & UTILITIES CORP. ABENGOA-ALGONQUIN GLOBAL ENERGY SOLUTIONS B.V. – and – ATLANTICA YIELD PLC Dated 9 May 2019 This ENHANCED COOPERATION AGREEMENT (this “Agreement”) is entered into on 9 May 2019 by and among ALGONQUIN POWER & UTILITIES CORP. (“AQN”), a company incorporated under the federal laws of Canad

August 7, 2019 EX-99.3

Shareholder Agreement Atlantica Yield Energy Solutions Canada Inc. the Shareholders named herein Atlantica Yield plc dated as of May 24, 2019 TABLE OF CONTENTS

Exhibit 99.3 Execution Version Shareholder Agreement between Atlantica Yield Energy Solutions Canada Inc. and the Shareholders named herein and Atlantica Yield plc dated as of May 24, 2019 TABLE OF CONTENTS ARTICLE I Definitions 4 Section 1.01 Definitions 4 Section 1.02 Interpretation 8 Section 1.03 Actions on Non-Business Days 8 Section 1.04 Calculation of Time 9 Section 1.05 Powers of the Direct

August 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into English) Great Wes

August 7, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name in

July 1, 2019 6-K

ABY / Abengoa Yield plc 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West

July 1, 2019 EX-99.1

ATLANTICA YIELD PLC Annual General Meeting of Shareholders June 20, 2019 Final Report of the Inspector of Election

Exhibit 99.1 ATLANTICA YIELD PLC Annual General Meeting of Shareholders June 20, 2019 Final Report of the Inspector of Election I, the undersigned, the duly appointed Inspector of Election at the Annual General Meeting of Shareholders (the “Meeting”) of Atlantica Yield plc (the “Company”), on June 20, 2019 hereby certify that: 1) Before entering upon the discharge of my duties as Inspector of Elec

June 3, 2019 EX-99.1

Accelerated Share Purchase Transaction

Exhibit 99.1 Exhibit 99.1 MORGAN STANLEY & CO. LLC 1585 BROADWAY NEW YORK, NY 10036-8293 (212) 761-4000 May 31, 2019 Accelerated Share Purchase Transaction AAGES (AY Holdings) B.V. Atrium Building, 8th Floor, Strawinskylaan 3127 1077 ZX Amsterdam, the Netherlands Dear Sir/Madam: The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the Transaction ent

June 3, 2019 SC 13D/A

ABY / Abengoa Yield plc / Algonquin Power & Utilities Corp. - AMENDMENT NO. 7 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 d620308dsc13da.htm AMENDMENT NO. 7 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 7) Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp.

May 24, 2019 SC 13D/A

ABY / Abengoa Yield plc / Algonquin Power & Utilities Corp. - AMENDMENT NO. 6 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 d748413dsc13da.htm AMENDMENT NO. 6 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 6) Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp.

May 24, 2019 EX-99.1

SHAREHOLDER AGREEMENT ATLANTICA YIELD ENERGY SOLUTIONS CANADA INC. THE SHAREHOLDERS NAMED HEREIN ATLANTICA YIELD PLC DATED AS OF May 24, 2019

EX-99.1 Exhibit 99.1 Execution Copy SHAREHOLDER AGREEMENT BETWEEN ATLANTICA YIELD ENERGY SOLUTIONS CANADA INC. AND THE SHAREHOLDERS NAMED HEREIN AND ATLANTICA YIELD PLC DATED AS OF May 24, 2019 TABLE OF CONTENTS Page Article 1 Definitions 1 Section 1.01 Definitions 1 Section 1.02 Interpretation 5 Section 1.03 Actions on Non-Business Days 6 Section 1.04 Calculation of Time 6 Section 1.05 Powers of

May 13, 2019 EX-99.2

9 May 2019 SUBSCRIPTION AGREEMENT relating to ordinary shares in Atlantica Yield plc Atlantica Yield plc as Issuer Algonquin Power & Utilities Corp. as Investor

EX-99.2 Exhibit 99.2 9 May 2019 SUBSCRIPTION AGREEMENT relating to ordinary shares in Atlantica Yield plc between Atlantica Yield plc as Issuer and Algonquin Power & Utilities Corp. as Investor Subscription Agreement Between: (1) Atlantica Yield plc, a public limited company organized and existing under the laws of England and Wales, United Kingdom; hereinafter referred to as the “Issuer”; And: (2

May 13, 2019 SC 13D/A

ABY / Abengoa Yield plc / Algonquin Power & Utilities Corp. - AMENDMENT NO. 5 TO SCHEDULE 13D Activist Investment

Amendment No. 5 to Schedule 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 5) Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Jennifer Tindale Algonquin Power & Utilities Corp. 354 Davis Road, Suite 100 Oakv

May 13, 2019 EX-99.1

ENHANCED COOPERATION AGREEMENT – by and among – ALGONQUIN POWER & UTILITIES CORP. ABENGOA-ALGONQUIN GLOBAL ENERGY SOLUTIONS B.V. – and – ATLANTICA YIELD PLC Dated 9 May 2019

EX-99.1 Exhibit 99.1 ENHANCED COOPERATION AGREEMENT – by and among – ALGONQUIN POWER & UTILITIES CORP. ABENGOA-ALGONQUIN GLOBAL ENERGY SOLUTIONS B.V. – and – ATLANTICA YIELD PLC Dated 9 May 2019 This ENHANCED COOPERATION AGREEMENT (this “Agreement”) is entered into on 9 May 2019 by and among ALGONQUIN POWER & UTILITIES CORP. (“AQN”), a company incorporated under the federal laws of Canada, ABENGOA

May 10, 2019 6-K

ABY / Abengoa Yield plc 6-K Current Report of Foreign Issuer 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as specified in its charter) Not applicable (Translation of Registrant’s name into

May 10, 2019 EX-99.1

Execution version ATLANTICA YIELD PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2025 NOTE ISSUANCE FACILITY AGREEMENT Dated April 30, 2019 TABLE OF CONTENTS

Exhibit 99.1 Execution version ATLANTICA YIELD PLC AND CERTAIN OF ITS SUBSIDIARIES Senior Floating Rate Notes due 2025 NOTE ISSUANCE FACILITY AGREEMENT Dated April 30, 2019 TABLE OF CONTENTS Article 1 Authorization of Notes; Interest Section 1.1 Authorization of Notes 1 Section 1.2 Interest 1 Section 1.3 Capitalization. 2 Article 2 Issue and Subscription of Notes Article 3 Closing Section 3.1 Clos

May 10, 2019 6-K

ABY / Abengoa Yield plc 6-K Current Report of Foreign Issuer 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West H

May 10, 2019 6-K

ABY / Abengoa Yield plc 6-K Current Report of Foreign Issuer 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great West H

May 6, 2019 6-K

ABY / Abengoa Yield plc 6-K Current Report of Foreign Issuer 6-K

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into

March 1, 2019 POSASR

ABY / Abengoa Yield plc POSASR

As filed with the Securities and Exchange Commission on March 1, 2019 Registration No.

February 28, 2019 EX-12.1

ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.1 ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Santiago Seage, Chief Executive Officer of Atlantica Yield plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any untrue statement of a material fact or omit

February 28, 2019 EX-12.2

ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act

Exhibit 12.2 ATLANTICA YIELD PLC Sarbanes Oxley Certification under Section 302 of the Act Certification I, Francisco Martinez-Davis, Chief Financial Officer of Atlantica Yield plc (the “Company”) certify that: 1. I have reviewed this annual report on Form 20-F (the “Annual Report”) of the Company; 2. Based on my knowledge, this Annual Report does not contain any untrue statement of a material fac

February 28, 2019 EX-15.2

INDEPENDENT AUDITORS’ CONSENT

EX-15.2 10 ex152.htm EXHIBIT 15.2 Exhibit 15.2 INDEPENDENT AUDITORS’ CONSENT We consent to the incorporation by reference in Registration Statement No. 333-226611 on Form F-3 of our report dated March 1, 2018, relating to the financial statements of Myah Bahr Honaine S.p.a. for the years ended December 31, 2017 and 2016 (which report expresses an unqualified opinion and includes an explanatory par

February 28, 2019 EX-13.1

Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002

Exhibit 13.1 Certification Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes Oxley Act of 2002 The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2018 (the “Annual Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (

February 28, 2019 20-F

ABY / Abengoa Yield plc 20-F

20-F 1 form20f.htm 20-F UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20509 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(

February 28, 2019 EX-15.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-226611 on Form F-3 of our reports dated February 26, 2019, relating to the consolidated financial statements of Atlantica Yield plc and subsidiaries, and the effectiveness of Atlantica Yield plc and subsidiaries’ internal control over financial report

February 28, 2019 EX-4.14

ARTICLE I RATIFICATION; DEFINITIONS AND RULES OF CONSTRUCTION

Exhibit 4.14 Execution Version FIRST AMENDMENT AND JOINDER TO CREDIT AND GUARANTY AGREEMENT, dated as of January 24, 2019 (this “Amendment and Joinder”), among (i) Atlantica Yield PLC, as borrower (the “Borrower”) under the Credit and Guaranty Agreement, dated as of May 10, 2018 (as amended, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), among

February 28, 2019 EX-4.16

ABENGOA YIELD PLC, AS ISSUER ABENGOA CONCESSIONS PERU S.A. ABENGOA SOLAR US HOLDINGS INC. ABENGOA SOLAR HOLDINGS USA INC., AS ORIGINAL GUARANTORS ABENGOA CONCESSIONS INFRASTRUCTURES, S.L.U. ACT HOLDING, S.A. DE C.V., AS ADDITIONAL GUARANTORS THE BANK

Exhibit 4.16 ABENGOA YIELD PLC, AS ISSUER ABENGOA CONCESSIONS PERU S.A. ABENGOA SOLAR US HOLDINGS INC. ABENGOA SOLAR HOLDINGS USA INC., AS ORIGINAL GUARANTORS ABENGOA CONCESSIONS INFRASTRUCTURES, S.L.U. ACT HOLDING, S.A. DE C.V., AS ADDITIONAL GUARANTORS THE BANK OF NEW YORK MELLON, AS TRUSTEE, REGISTRAR, PAYING AGENT AND TRANSFER AGENT AND THE BANK OF NEW YORK MELLON (LUXEMBOURG) S.A., AS LUXEMBO

February 28, 2019 EX-4.17

ABENGOA YIELD PLC, AS ISSUER ABENGOA CONCESSIONS PERU S.A. ABENGOA SOLAR US HOLDINGS INC. ABENGOA SOLAR HOLDINGS USA INC., ABENGOA CONCESSIONS INFRASTRUCTURES, S.L.U. ACT HOLDING, S.A. DE C.V., AS GUARANTORS ABENGOA SOLAR SOUTH AFRICA PROPRIETARY LIM

EX-4.17 4 ex417.htm EXHIBIT 4.17 Exhibit 4.17 ABENGOA YIELD PLC, AS ISSUER ABENGOA CONCESSIONS PERU S.A. ABENGOA SOLAR US HOLDINGS INC. ABENGOA SOLAR HOLDINGS USA INC., ABENGOA CONCESSIONS INFRASTRUCTURES, S.L.U. ACT HOLDING, S.A. DE C.V., AS GUARANTORS ABENGOA SOLAR SOUTH AFRICA PROPRIETARY LIMITED, AS ADDITIONAL GUARANTOR THE BANK OF NEW YORK MELLON, AS TRUSTEE, REGISTRAR, PAYING AGENT AND TRANS

February 28, 2019 EX-15.3

Deloitte Letter Change of Auditors

Exhibit 15.3 Deloitte Letter Change of Auditors February 28, 2019 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7561 Dear Sirs/Madams: We have read Item 16.F of Atlantica Yield plc Annual Report on Form 20-F dated February 28, 2019, and we agree with the statements made therein. Yours truly, /s/ Deloitte, S.L. Madrid, Spain

February 28, 2019 EX-99.1

INDEPENDENT AUDITORS' REPORT

Exhibit 99.1 INDEPENDENT AUDITORS' REPORT To the Board of Directors and Shareholders of Atlantica Yield plc: We have audited the accompanying financial statements of Myah Bahr Honaine S.p.a. (the "Company"), which comprise the statement of financial position as of December 31, 2017 and 2016, and the related statements of income, comprehensive income, changes in equity and cash flows for the years

February 28, 2019 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

6-K 1 form6k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant's name

February 28, 2019 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant's name into English) Great W

February 15, 2019 SC 13D/A

ABY / Abengoa Yield plc / Algonquin Power & Utilities Corp. - SCHEDULE 13D/A Activist Investment

SC 13D/A 1 s002672x113da.htm SCHEDULE 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A (Amendment No. 4) Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) John T. Gaffney Gibson, Dunn & Crutcher LLP 200 Park Ave New York, Ne

February 14, 2019 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February, 2019 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great W

December 21, 2018 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2018 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great W

December 14, 2018 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2018 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great W

December 14, 2018 EX-99.1

Atlantica Yield Acquires a New Wind Plant

Exhibit 99.1 Atlantica Yield Acquires a New Wind Plant December 14, 2018 – Atlantica Yield plc (NASDAQ: AY) (“Atlantica”), the sustainable total return company that owns a diversified portfolio of contracted assets in the energy and environmental sectors, announced today the closing of the acquisition of Melowind, a 50 MW on-shore wind plant in Uruguay, from Enel Green Power S.p.A. This transactio

November 27, 2018 6-K

ABY / Abengoa Yield plc 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November, 2018 Commission File Number 001-36487 Atlantica Yield plc (Exact name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant’s name into English) Great W

November 27, 2018 EX-99.2

ALGONQUIN (AY HOLDCO) B.V. AAGES (AY HOLDINGS) B.V. SALE AND PURCHASE AGREEMENT ATLANTICA YIELD PLC

Exhibit 99.2 ALGONQUIN (AY HOLDCO) B.V. AND AAGES (AY HOLDINGS) B.V. SALE AND PURCHASE AGREEMENT ATLANTICA YIELD PLC CONTENTS Clause Page 1. Interpretation 2 2. Sale and Purchase 4 3. Consideration 4 4. Completion 5 5. Assignment of Certain Rights under ACIL Luxco Option 5 6. Termination 5 7. Miscellaneous 6 8. Notices 9 9. Governing Law 10 10. Dispute Resolution 10 -1- THIS AGREEMENT is made on 2

November 27, 2018 SC 13D/A

ABY / Abengoa Yield plc / Algonquin Power & Utilities Corp. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Chauncey M. Lane Husch Blackwell LLP 2001 Ross Avenue Suite 2000 Dallas, Texas 75201 (214) 999-6129 (Name, Address and Telephone Nu

November 27, 2018 EX-99.3

THE BANK OF NOVA SCOTIA CREDIT AGREEMENT dated as of November 19, 2012 ALGONQUIN POWER & UTILITIES CORP. THE BANK OF NOVA SCOTIA Table of Contents

EX-99.3 4 ex993.htm EXHIBIT 99.3 Exhibit 99.3 This document is a consolidation prepared at the request of Algonquin Power & Utilities Corp. of the Credit Agreement dated as of November 19, 2012 between The Bank of Nova Scotia, as Lender, and Algonquin Power & Utilities Corp., as Borrower, as amended by a First Amending Agreement dated as of November 19, 2013, a Second Amending Agreement dated as o

November 27, 2018 EX-99.1

ALGONQUIN POWER & UTILITIES CORP. ALGONQUIN (AY HOLDCO) B.V. SALE AND PURCHASE AGREEMENT ATLANTICA YIELD PLC

Exhibit 99.1 ALGONQUIN POWER & UTILITIES CORP. AND ALGONQUIN (AY HOLDCO) B.V. SALE AND PURCHASE AGREEMENT ATLANTICA YIELD PLC CONTENTS Clause Page 1. Interpretation 2 2. Sale and Purchase 4 3. Consideration 4 4. Completion 5 5. Assignment of Certain Rights under ACIL Luxco Option 5 6. Termination 5 7. Miscellaneous 5 8. Notices 9 9. Governing Law 10 10. Dispute Resolution 10 -1- THIS AGREEMENT is

November 27, 2018 SC 13D/A

ABY / Abengoa Yield plc / ABENGOA, S.A. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 13)* Atlantica Yield plc (Name of Issuer) Ordinary Shares, nominal value $0.10 per share (Title of Class of Securities) G0751N103 (CUSIP Number) Gonzalo Urquijo Fernández de Araoz Campus Palmas Altas C/ Energía Solar 41014, Seville, Spain (Name, Address and

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