HTOO / Fusion Fuel Green PLC - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

فيوجن فيول جرين بي إل سي
US ˙ NasdaqCM ˙ IE00BNC17Y43

الإحصائيات الأساسية
LEI 635400GWH5YE1XNIVG85
CIK 1819794
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 Fusion Fuel Green PLC
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
September 2, 2025 EX-99.1

Fusion Fuel’s BrightHy Solutions Wins Tender Processes to Advance to Final Contract Negotiations for Two Green Hydrogen Projects in Southern Europe

Exhibit 99.1 PRESS RELEASE Fusion Fuel’s BrightHy Solutions Wins Tender Processes to Advance to Final Contract Negotiations for Two Green Hydrogen Projects in Southern Europe Dublin, Ireland – September 2, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), today announced that its subsidiary, Bright Hydrogen Solutions Ltd (“BrightHy Solutions”), has been selected to adva

September 2, 2025 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: September, 2025. Commission File Number: 0

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: September, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal e

August 27, 2025 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, 2025. 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: August, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal exec

August 27, 2025 EX-99.1

Fusion Fuel Green PLC to Release a Mid-Year Investor Update on September 17, 2025

Exhibit 99.1 Fusion Fuel Green PLC to Release a Mid-Year Investor Update on September 17, 2025 DUBLIN, Ireland – August 27, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that it will release an Investor Update Presentation and Video at 8:00 a.m. Eastern Time on Wednesday, September 17, 2025. In the Investor

August 15, 2025 424B3

Up to 3,244,660 Class A Ordinary Shares Fusion Fuel Green PLC

Filed Pursuant to Rule 424(b)(3) Registration No. 333-289429 Up to 3,244,660 Class A Ordinary Shares Fusion Fuel Green PLC This prospectus relates to the offer and resale from time to time by the selling shareholders identified in “Selling Shareholders” on page 11 (the “Selling Shareholders”) of up to 3,244,660 Class A ordinary shares with a nominal value of $0.0035 each (“Class A Ordinary Shares”

August 11, 2025 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, 2025. 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: August, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal exec

August 11, 2025 EX-99.1

Fusion Fuel Signs Non-Binding Letter of Intent to Enter Joint Venture for Specialized Fuel Project in South Africa

Exhibit 99.1 Fusion Fuel Signs Non-Binding Letter of Intent to Enter Joint Venture for Specialized Fuel Project in South Africa DUBLIN, Ireland – August 11, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced the signing of a non-binding Letter of Intent (“LOI”) to form a joint venture (“JV”) with a privately-held

August 8, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees to be Paid Equity Class A Ordinary Shares with a nominal value of $0.

August 8, 2025 F-3

As filed with the Securities and Exchange Commission on August 8, 2025

As filed with the Securities and Exchange Commission on August 8, 2025 Registration No.

August 6, 2025 EX-99.1

Fusion Fuel Regains Compliance with Nasdaq Listing Requirements

Exhibit 99.1 Fusion Fuel Regains Compliance with Nasdaq Listing Requirements DUBLIN, Ireland – August 6, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that it has received formal confirmation from the Hearings Advisor (the “Hearings Advisor”) of the Office of the General Counsel of the Nasdaq Hearings Panel

August 6, 2025 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, 2025. 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: August, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal exec

August 5, 2025 EX-10.1

STOCK PURCHASE AGREEMENT

Exhibit 10.1 STOCK PURCHASE AGREEMENT THIS STOCK PURCHASE AGREEMENT (the “Agreement”) is dated as of August 1, 2025, by and between the Fusion Fuel Green PLC (the “Purchaser”) having its principal place of business at 499 Park Ave FL 12 New York NY, 10022-1876, and Quality Industrial Corp. having its principal place of business at 505 Montgomery Street, San Francisco, CA 94104 (the “Seller”). The

August 5, 2025 424B3

PROSPECTUS SUPPLEMENT (to Prospectus dated June 12, 2025) FUSION FUEL GREEN PLC 783,994 Class A Ordinary Shares

Filed Pursuant to Rule 424(b)(3) Registration No. 333-286198 PROSPECTUS SUPPLEMENT (to Prospectus dated June 12, 2025) FUSION FUEL GREEN PLC 783,994 Class A Ordinary Shares This prospectus supplement (this “Prospectus Supplement”) updates, amends, and supplements the prospectus dated June 12, 2025 (the “Prospectus”), which forms a part of Fusion Fuel Green PLC’s (the “Company,” “we,” “us,” or “our

August 5, 2025 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, 2025. 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: August, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal exec

July 30, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 28, 2025 424B5

Up to $4,184,136 Class A Ordinary Shares FUSION FUEL GREEN PLC

424B5 1 ea0250416-424b5fusion.htm PROSPECTUS SUPPLEMENT Filed Pursuant to Rule 424(b)(5) Registration No. 333-264714 PROSPECTUS SUPPLEMENT (To Prospectus dated May 13, 2022) Up to $4,184,136 Class A Ordinary Shares FUSION FUEL GREEN PLC This prospectus supplement amends and supplements the information in the prospectus supplement, dated May 16, 2025 (the “Prior Prospectus Supplement”), and the pro

July 28, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 25, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 25, 2025 EX-99.1

Fusion Fuel Announces New LPG Projects for Subsidiary Al Shola Gas

Exhibit 99.1 Fusion Fuel Announces New LPG Projects for Subsidiary Al Shola Gas DUBLIN, Ireland, 25 July 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that, in July 2025, its majority-owned operating subsidiary, Al Shola Al Modea Gas Distribution LLC (“Al Shola Gas”), confirmed a number of new projects for t

July 23, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 23, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 23, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 23, 2025 EX-4.3

ORDINARY SHARES PURCHASE WARRANT FUSION FUEL GREEN PLC

Exhibit 4.3 NEITHER THIS SECURITY NOR THE SECURITIES ISSUABLE UPON THE EXERCISE OF THIS SECURITY HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE AND THIS SECURITY WAS ISSUED IN RELIANCE UPON AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”) AND SIMILAR EXEMPTIONS UNDER APPLIC

July 23, 2025 EX-10.2

NOTES REDEMPTION, WARRANTS CANCELLATION AND EXCHANGE, LIMITED WAIVER, CONSENT AND RELEASE AGREEMENT

Exhibit 10.2 NOTES REDEMPTION, WARRANTS CANCELLATION AND EXCHANGE, LIMITED WAIVER, CONSENT AND RELEASE AGREEMENT This NOTES REDEMPTION, WARRANTS CANCELLATION AND EXCHANGE, LIMITED WAIVER, CONSENT AND RELEASE AGREEMENT (this “Agreement”), dated as of July 22, 2025 (the “Effective Date”), is entered into by and among Fusion Fuel Green PLC, an Irish public limited company (the “Company”) and the inve

July 23, 2025 EX-99.1

Fusion Fuel Receives First Payment in Sale of Shares of P2X Spain

Exhibit 99.1 Fusion Fuel Receives First Payment in Sale of Shares of P2X Spain Dublin, Ireland, July 23, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions,, today announced that it has received the first payment related to its sale of its former 50% equity interest in P2X Spain Sociedad Limitada (formerly known as Fusion Fuel Sp

July 23, 2025 EX-4.1

PRE-FUNDED ORDINARY SHARES PURCHASE WARRANT FUSION FUEL GREEN PLC

Exhibit 4.1 NEITHER THIS SECURITY NOR THE SECURITIES ISSUABLE UPON THE EXERCISE OF THIS SECURITY IS HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE AND THIS SECURITY WAS ISSUED IN RELIANCE UPON AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”) AND SIMILAR EXEMPTIONS UNDER APP

July 23, 2025 EX-4.4

Fusion Fuel Green PLC Warrant To Purchase Ordinary Shares

Exhibit 4.4 THE SECURITIES REPRESENTED BY THIS CERTIFICATE AND THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) AN OPINION OF COUNSEL TO THE HOLDER (IF REQUESTED BY THE COMPANY), IN A FORM REASONAB

July 23, 2025 EX-99.1

Fusion Fuel Green PLC Announces $4.3 Million Private Placement and Noteholder Agreements

Exhibit 99.1 Fusion Fuel Green PLC Announces $4.3 Million Private Placement and Noteholder Agreements Dublin, Ireland – July 23, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that it has entered into a definitive agreement for a private placement (the “PIPE”) with investors for aggregate gross proceeds of $4

July 23, 2025 EX-4.2

ORDINARY SHARES PURCHASE WARRANT FUSION FUEL GREEN PLC

Exhibit 4.2 NEITHER THIS SECURITY NOR THE SECURITIES ISSUABLE UPON THE EXERCISE THIS SECURITY HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE AND THIS SECURITY WAS ISSUED IN RELIANCE UPON AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”) AND SIMILAR EXEMPTIONS UNDER APPLICABL

July 23, 2025 EX-10.1

SECURITIES PURCHASE AGREEMENT

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (the “Agreement”), dated as of July [], 2025, between Fusion Fuel Green PLC, an Irish public limited company (the “Company”), and each investor identified on the signature pages hereto (each, including its successors and assigns, an “Investor” and collectively, the “Investors”). WHEREAS, subject to the terms and conditio

July 22, 2025 EX-99.1

Fusion Fuel’s BrightHy Solutions Announces Non-Binding Term Sheet for Strategic Partnership with €30 Million Commitment for Hydrogen Infrastructure Investments

Exhibit 99.1 Fusion Fuel’s BrightHy Solutions Announces Non-Binding Term Sheet for Strategic Partnership with €30 Million Commitment for Hydrogen Infrastructure Investments Dublin, Ireland, July 22, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that Bright Hydrogen Solutions Ltd (“BrightHy Solutions”), a Fus

July 22, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 17, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 17, 2025 EX-99.1

Fusion Fuel’s BrightHy Solutions and Houpu Global Clean Energy Sign Strategic Agency Agreement to Expand Hydrogen Infrastructure in Europe and Latin America

Exhibit 99.1 Fusion Fuel’s BrightHy Solutions and Houpu Global Clean Energy Sign Strategic Agency Agreement to Expand Hydrogen Infrastructure in Europe and Latin America Dublin, July 17, 2025 - Fusion Fuel Green PLC´s (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”) hydrogen advisory and solutions subsidiary, Bright Hydrogen Solutions Ltd (“BrightHy Solutions”), has signed an agency agreement with

July 16, 2025 EX-99.1

Fusion Fuel Green PLC Provides Shareholder Update on Strategic Progress and Outlook

Exhibit 99.1 Fusion Fuel Green PLC Provides Shareholder Update on Strategic Progress and Outlook DUBLIN, Ireland – July 16, 2025 – Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a green hydrogen and integrated energy solutions provider, today shared a comprehensive shareholder update, spotlighting key operational milestones and strategic developments. Nasdaq Compliance Prog

July 16, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

July 10, 2025 EX-99.1

Fusion Fuel Green PLC Announces Reverse Share Split to Regain Compliance with Nasdaq’s Minimum Bid Price Rule

Exhibit 99.1 Fusion Fuel Green PLC Announces Reverse Share Split to Regain Compliance with Nasdaq’s Minimum Bid Price Rule DUBLIN, Ireland – July 10, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”) today announced a 1-for-35 reverse share split (the “Reverse Share Split”) of the Company’s Class A Ordinary Shares by way of a share consolidation. The Company’s Class A Or

July 10, 2025 EX-1.1

Companies Act 2014 PUBLIC LIMITED COMPANY FUSION FUEL GREEN PUBLIC LIMITED COMPANY MEMORANDUM OF ASSOCIATION As amended at a General Meeting of the Shareholders on 25 June 2025

Exhibit 1.1 Companies Act 2014 PUBLIC LIMITED COMPANY CONSTITUTION OF FUSION FUEL GREEN PUBLIC LIMITED COMPANY MEMORANDUM OF ASSOCIATION As amended at a General Meeting of the Shareholders on 25 June 2025 1. The name of the Company is FUSION FUEL GREEN PUBLIC LIMITED COMPANY. 2. The Company is a public limited company, registered under Part 17 of the Companies Act 2014. 3. The objects for which th

July 10, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

June 25, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

June 25, 2025 EX-99.1

Fusion Fuel Announces AGM Results: All Shareholder Proposals Approved

Exhibit 99.1 Fusion Fuel Announces AGM Results: All Shareholder Proposals Approved DUBLIN, June 25, 2025 (GLOBE NEWSWIRE) Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of energy engineering, advisory, and utility solutions, today announced that all shareholder proposals were approved at the general meeting of shareholders held on June 25, 2025 (the “Annu

June 13, 2025 424B3

Up to 27,439,440 Class A Ordinary Shares Fusion Fuel Green PLC

Filed Pursuant to Rule 424(b)(3) Registration No. 333-286198 PROSPECTUS Up to 27,439,440 Class A Ordinary Shares Fusion Fuel Green PLC This prospectus relates to the offer and resale from time to time of up to 27,439,440 Class A ordinary shares with a nominal value of $0.0001 each (“Class A Ordinary Shares”) of Fusion Fuel Green PLC, an Irish public limited company (“we,” “us,” “our,” or the “Comp

June 13, 2025 424B3

Up to 6,247,684 Class A Ordinary Shares Fusion Fuel Green PLC

Filed Pursuant to Rule 424(b)(3) Registration No. 333-286202 PROSPECTUS Up to 6,247,684 Class A Ordinary Shares Fusion Fuel Green PLC This prospectus relates to the offer and sale from time to time by Keystone Capital Partners, LLC, a Delaware limited liability company (“Keystone” or the “Selling Shareholder”), of up to 6,247,684 Class A ordinary shares with a nominal value of $0.0001 each (“Class

June 10, 2025 CORRESP

Fusion Fuel Green PLC 9 Pembroke Street Upper Dublin D02 KR83

Fusion Fuel Green PLC 9 Pembroke Street Upper Dublin D02 KR83 Ireland June 10, 2025 U.

June 10, 2025 CORRESP

Fusion Fuel Green PLC 9 Pembroke Street Upper Dublin D02 KR83

Fusion Fuel Green PLC 9 Pembroke Street Upper Dublin D02 KR83 Ireland June 10, 2025 U.

June 4, 2025 EX-99.1

NOTICE OF ANNUAL GENERAL MEETING FUSION FUEL GREEN PUBLIC LIMITED COMPANY (Company Number 669283)

Exhibit 99.1 NOTICE OF ANNUAL GENERAL MEETING FUSION FUEL GREEN PUBLIC LIMITED COMPANY (Company Number 669283) Notice is hereby given that the Annual General Meeting (“AGM”) of Fusion Fuel Green PLC (the “Company”) for the 2024 fiscal year will be held at 2:00 pm (Dublin time) on Wednesday, 25 June 2025 at Arthur Cox LLP, Ten Earlsfort Terrace, Dublin 2, Ireland, DO2 T380 for the following purpose

June 4, 2025 EX-99.2

Fusion Fuel Green PLC Announces Forthcoming Annual General Meeting

Exhibit 99.2 Fusion Fuel Green PLC Announces Forthcoming Annual General Meeting DUBLIN, Ireland – June 4, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”) today announced that it will hold its Annual General Meeting (“AGM”) on June 25, 2025, at 2:00 PM (Dublin time) at the offices of Arthur Cox LLP, Ten Earlsfort Terrace, Dublin 2, D02 T380, Ireland. Shareholders are en

June 4, 2025 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, 2025. Commission File Number: 001-39

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal execut

May 29, 2025 EX-99.1

BrightHy Solutions, a Fusion Fuel company, Forges Strategic Partnership with Sungrow Hydrogen to Deliver Cutting-Edge Hydrogen Solutions in Iberia

Exhibit 99.1 BrightHy Solutions, a Fusion Fuel company, Forges Strategic Partnership with Sungrow Hydrogen to Deliver Cutting-Edge Hydrogen Solutions in Iberia Dublin, Ireland – May 29, 2025 – BrightHy Solutions, a Fusion Fuel company and a leading provider of hydrogen solutions, is proud to announce a strategic agency and partnership agreement with Sungrow Hydrogen, a leading green hydrogen produ

May 29, 2025 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, 2025. Commission File Number: 001-397

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal executi

May 27, 2025 EX-99.1

Fusion Fuel Green PLC Signs Non-Binding Heads of Terms for Strategic UK Energy Distribution Acquisition

Exhibit 99.1 Fusion Fuel Green PLC Signs Non-Binding Heads of Terms for Strategic UK Energy Distribution Acquisition DUBLIN, Ireland – May 27, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a provider of integrated energy solutions, today announced that it has executed non-binding Heads of Terms (“Heads of Terms”) with a privately-held United Kingdom-based fuel distr

May 27, 2025 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, 2025. Commission File Number: 001-397

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal executi

May 23, 2025 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees Previously Paid Equity Class A ordinary shares with a nominal value of $0.

May 23, 2025 F-3/A

As filed with the Securities and Exchange Commission on May 23, 2025

As filed with the Securities and Exchange Commission on May 23, 2025 Registration No.

May 23, 2025 CORRESP

, 2025

E: [email protected] T: 202.869.0888 (ext. 100) W: bevilacquapllc.com May 23, 2025 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, D.C. 20549 Attn: Eranga Dias Erin Purnell Re: Fusion Fuel Green PLC Registration Statement on Form F-3 Filed March 28, 2025 File No. 333-286202 Ladies and Gentlemen:

May 23, 2025 F-3/A

As filed with the Securities and Exchange Commission on May 23, 2025

As filed with the Securities and Exchange Commission on May 23, 2025 Registration No.

May 23, 2025 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees Previously Paid Equity Class A ordinary shares with a nominal value of $0.

May 23, 2025 CORRESP

202.869.0888 (ext. 100)

E: [email protected] T: 202.869.0888 (ext. 100) W: bevilacquapllc.com May 23, 2025 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, D.C. 20549 Attn: Eranga Dias Erin Purnell Re: Fusion Fuel Green PLC Registration Statement on Form F-3 Filed March 28, 2025 File No. 333-286198 Ladies and Gentlemen:

May 23, 2025 EX-4.4

ORDINARY SHARES PURCHASE AGREEMENT Dated as of January 10, 2025 by and among FUSION FUEL GREEN PLC, KEYSTONE CAPITAL PARTNERS, LLC ORDINARY SHARES PURCHASE AGREEMENT

Exhibit 4.4 Final Execution Copy ORDINARY SHARES PURCHASE AGREEMENT Dated as of January 10, 2025 by and among FUSION FUEL GREEN PLC, and KEYSTONE CAPITAL PARTNERS, LLC ORDINARY SHARES PURCHASE AGREEMENT This ORDINARY SHARES PURCHASE AGREEMENT is made and entered into as of January 10, 2025 (this “Agreement”), by and among Keystone Capital Partners, LLC, a Delaware limited liability company (the “I

May 22, 2025 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, 2025. Commission File Number: 001-397

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal executi

May 22, 2025 EX-99.1

Fusion Fuel Announces Over $2.7 Million in New Contracts and Substantial Utility Growth through Al Shola Gas

Exhibit 99.1 Fusion Fuel Announces Over $2.7 Million in New Contracts and Substantial Utility Growth through Al Shola Gas DUBLIN, Ireland – May 22, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of full-service energy engineering, advisory, and utility solutions, today announced that its majority-owned operating subsidiary, Al Shola Al Modea Gas Di

May 16, 2025 424B5

Up to $2,064,262 FUSION FUEL GREEN PLC Class A Ordinary Shares

Filed Pursuant to Rule 424(b)(5) Registration No. 333-264714 PROSPECTUS SUPPLEMENT (To Prospectus dated May 13, 2022) Up to $2,064,262 FUSION FUEL GREEN PLC Class A Ordinary Shares This prospectus supplement relates to an offering and sale of the Class A ordinary shares with a nominal value of $0.0001 (“Class A Ordinary Shares”) of Fusion Fuel Green PLC, an Irish public limited company (“we,” “us,

May 16, 2025 EX-10.1

AT THE MARKET OFFERING AGREEMENT

Exhibit 10.1 AT THE MARKET OFFERING AGREEMENT May 16, 2025 H.C. Wainwright & Co., LLC 430 Park Avenue New York, New York 10022 Ladies and Gentlemen: Fusion Fuel Green PLC, a public limited company incorporated under the laws of Ireland (the “Company”), confirms its agreement (this “Agreement”) with H.C. Wainwright & Co., LLC (the “Manager”) as follows: 1. Definitions. The terms that follow, when u

May 16, 2025 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, 2025. Commission File Number: 001-397

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 9 Pembroke Street Upper Dublin D02 KR83 Ireland (Address of principal executi

May 13, 2025 EX-4.1

FUSION FUEL GREEN PLC [ ] Dated as of __, 20__ TABLE OF CONTENTS

Exhibit 4.1 FUSION FUEL GREEN PLC TO [ ] Trustee Indenture Dated as of , 20 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION Section 101. Definitions 1 Section 102. Compliance Certificates and Opinions 9 Section 103. Form of Documents Delivered to Trustee 9 Section 104. Acts of Holders 10 Section 105. Notices, Etc. to Trustee and Company 11 Section 106. Noti

May 13, 2025 F-3

As filed with the Securities and Exchange Commission on May 13, 2025

As filed with the Securities and Exchange Commission on May 13, 2025 Registration No.

May 13, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(1)(2) Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid Equity Class A ordinary shares with a nominal value of $0.

May 12, 2025 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A (Amendment No. 2) 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. Commis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A (Amendment No. 2) 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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s

May 12, 2025 EX-99.1

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION AS OF AND FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024

Exhibit 99.1 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION AS OF AND FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024 On November 18, 2024, Fusion Fuel Green PLC, an Irish public limited company (“Fusion Fuel” or “HTOO”), entered into a Stock Purchase Agreement, dated as of November 18, 2024 (the “Purchase Agreement”), with Quality Industrial Corp., a Nevada corporation (“QIND”), Ilustra

May 9, 2025 EX-12.2

Certification Pursuant to Rule 13a-14(a) of the Exchange Act

Exhibit 12.2 Certification Pursuant to Rule 13a-14(a) of the Exchange Act I, Frederico Figueira de Chaves, certify that: 1. I have reviewed this annual report on Form 20-F of Fusion Fuel Green PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

May 9, 2025 EX-13.1

Certifications Pursuant to Rule 13a-14(b) or Rule 15d-14(b) and 18 U.S.C. 1350

Exhibit 13.1 Certifications Pursuant to Rule 13a-14(b) or Rule 15d-14(b) and 18 U.S.C. 1350 Pursuant to U.S.C. Section 1350 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), each of the undersigned officers of Fusion Fuel Green PLC (the “Company”), does hereby certify, to such officer’s knowledge, that: The Annual Report on For

May 9, 2025 EX-1.2

FUSION FUEL GREEN PLC CERTIFICATE OF DESIGNATION OF PREFERENCES, BENEFITS AND LIMITATIONS SERIES A CONVERTIBLE PREFERRED SHARES

Exhibit 1.2 FUSION FUEL GREEN PLC CERTIFICATE OF DESIGNATION OF PREFERENCES, BENEFITS AND LIMITATIONS OF SERIES A CONVERTIBLE PREFERRED SHARES Fusion Fuel Green PLC, a public limited company incorporated in the Republic of Ireland (the “Corporation”), does hereby certify that, pursuant to the authority contained in its Memorandum and Articles of Association (the “Constitution”), the board of direc

May 9, 2025 EX-12.1

Certifications Pursuant to Rule 13a-14(a) or Rule 15d-14(a)

Exhibit 12.1 Certifications Pursuant to Rule 13a-14(a) or Rule 15d-14(a) I, John-Paul Backwell, certify that: 1. I have reviewed this annual report on Form 20-F of Fusion Fuel Green PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such

May 9, 2025 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark one) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

May 9, 2025 EX-15.1

179 N. Gibson Rd., Henderson, NV 89014 ● 702.703.5979 ● www.bushandassociatescpas.com

Exhibit 15.1 To Whom It May Concern: We consent to the incorporation by reference in the Registration Statements on Form F-3 (File Nos. 333-251990, 333-264714, and 333-276880) and Registration Statement on Form S-8 (File No. 333-258543) of our report dated May 9, 2025, relating to the financial statements of Fusion Fuel Green PLC as of and for the year ended December 31, 2024. We also consent to t

May 9, 2025 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 the registration statements (No. 333-276880, 333-251990 and 333-264714) on Form F-3 and (No. 333-258543) on Form S-8 of our report dated April 30, 2024, with respect to the consolidated financial statements of Fusion Fuel Green plc. /s/ KPMG Dublin, Ireland. May 9, 2025

May 9, 2025 EX-4.6

Subscription Agreement

Exhibit 4.6 Subscription Agreement Fusion Fuel Green Plc The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland Ladies and Gentlemen: The undersigned understands that Fusion Fuel Green Plc, a public limited company incorporated in Ireland (the “Company”), is offering an aggregate of 43,790,850 Class A ordinary shares, par value $0.0001 per share (the “Shares”) and warrant

May 9, 2025 EX-4.7

FUSION FUEL GREEN PLC The Victorians 15-18 Earlsfort Terrace, Saint Kevin’s Dublin 2, D02 YX28, Ireland

Exhibit 4.7 FUSION FUEL GREEN PLC The Victorians 15-18 Earlsfort Terrace, Saint Kevin’s Dublin 2, D02 YX28, Ireland October 9, 2024 Hydrogenial S.A. Carrer Pau Casals, 10 500 Andorra la Vella E-mail: [email protected] Attn: Norbert Binder Re: Amendment to Subscription Agreement Closing Date Ladies and Gentlemen: Reference is hereby made to that certain Subscription Agreement, dated A

May 9, 2025 EX-2.13

DESCRIPTION OF SECURITIES

Exhibit 2.13 DESCRIPTION OF SECURITIES The following description of the material terms of the share capital of Fusion Fuel Green PLC, an Irish public limited company (“we,” “us,” “our,” “our company,” or the “Company”), includes a summary of specified provisions of the Company’s Memorandum and Articles of Association (“M&A”). This description is qualified by reference to the Company’s M&A filed as

May 9, 2025 EX-11.1

2 Fusion Fuel Green Plc 10 Earlsfort Terrace, Dublin 2, D02 T380 | Ireland ● www.fusion-fuel.eu

Exhibit 11.1 PUBLIC INFORMATION Company Fusion Fuel HR HR Document Number FF GROUP 03 (EN) Revision Number 01 Document Type Internal Policy Document Status Approved Made by Cátia Carvalho Emission Date 16/06/2023 2 Fusion Fuel Green Plc 10 Earlsfort Terrace, Dublin 2, D02 T380 | Ireland ● www.fusion-fuel.eu PUBLIC INFORMATION Changes § All Comments and Revisions must be mentioned here. § Changes m

May 1, 2025 NT 20-F

Fusion Fuel Green PLC (Name of Registrant as Specified in Charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC. 20549 FORM 12b-25 SEC File Number 001-39789 CUSIP Number G3R25D118 NOTIFICATION OF LATE FILING (Check One): ☐ Form 10-K ☒ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2024 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐Trans

April 9, 2025 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, 2025. 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: April, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ir

April 9, 2025 EX-99.1

Fusion Fuel Signs Non-Binding Letter of Intent to Acquire British Fuel Distribution Company

Exhibit 99.1 Fusion Fuel Signs Non-Binding Letter of Intent to Acquire British Fuel Distribution Company DUBLIN, Ireland – April 9, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of full-service energy engineering and advisory solutions, today announced that it has signed a non-binding letter of intent (“LOI”) to acquire 100% of a privately held Br

March 28, 2025 EX-4.3

FUSION FUEL GREEN PLC CLASS A ORDINARY SHARE PURCHASE WARRANT

Exhibit 4.3 NEITHER THIS WARRANT NOR THE SECURITIES INTO WHICH THIS WARRANT IS EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES

March 28, 2025 F-3

As filed with the Securities and Exchange Commission on March 28, 2025

As filed with the Securities and Exchange Commission on March 28, 2025 Registration No.

March 28, 2025 F-3

As filed with the Securities and Exchange Commission on March 28, 2025

As filed with the Securities and Exchange Commission on March 28, 2025 Registration No.

March 28, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees to be Paid Equity Class A ordinary shares with a nominal value of $0.

March 28, 2025 EX-4.6

LIMITED WAIVER AND CONSENT

Exhibit 4.6 LIMITED WAIVER AND CONSENT This LIMITED WAIVER AND CONSENT, dated as of March 17, 2025 (this “Waiver and Consent”), is entered into by and between Fusion Fuel Green PLC, an Irish public limited company (the “Company”), and Keystone Capital Partners, LLC, a Delaware limited liability company (“Keystone”). Each of the Company and Keystone are sometimes referred to in this Agreement indiv

March 28, 2025 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table Form F-3 (Form Type) Fusion Fuel Green PLC (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees to be Paid Equity Class A ordinary shares with a nominal value of $0.

March 28, 2025 EX-4.12

[AMENDED AND RESTATED] LIMITED WAIVER

Exhibit 4.12 [AMENDED AND RESTATED] LIMITED WAIVER This [AMENDED AND RESTATED] LIMITED WAIVER (this “Waiver”), dated as of March 26, 2025 (the “Effective Date”), is entered into by and among Fusion Fuel Green PLC, an Irish public limited company (the “Company”), and the investor signatory hereto (the “Holder”). Each of the Company and the Holder are sometimes referred to in this Waiver individuall

March 12, 2025 424B3

FUSION FUEL GREEN PLC 6,018,540 Class A Ordinary Shares

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276880 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 3, 2024) FUSION FUEL GREEN PLC 6,018,540 Class A Ordinary Shares This prospectus supplement amends and supplements the information in the prospectus, dated May 3, 2024 (the “Prospectus”), as supplemented by the prospectus supplement, dated May 22, 2024 (the “Prior Prospectus Supplement”), re

March 10, 2025 EX-99.4

QUALITY INDUSTRIAL CORP. FINANCIAL STATEMENTS DECEMBER 31, 2023 & DECEMBER 31, 2022 QUALITY INDUSTRIAL CORP. FINANCIAL STATEMENTS DECEMBER 31, 2023 & DECEMBER 31, 2022 TABLE OF CONTENTS

Exhibit 99.4 QUALITY INDUSTRIAL CORP. FINANCIAL STATEMENTS DECEMBER 31, 2023 & DECEMBER 31, 2022 QUALITY INDUSTRIAL CORP. FINANCIAL STATEMENTS DECEMBER 31, 2023 & DECEMBER 31, 2022 TABLE OF CONTENTS PAGES INDEPENDENT AUDITOR’S REPORT 1 FINANCIAL STATEMENTS: CONSOLIDATED BALANCE SHEETS 2 CONSOLIDATED STATEMENT OF OPERATIONS 3 CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 4 CONSOLIDATED STATEMENT

March 10, 2025 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: November, 2024. Commis

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: November, 2024. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s

March 10, 2025 EX-2.1

STOCK PURCHASE AGREEMENT by and among QUALITY INDUSTRIAL CORP., a Nevada corporation, FUSION FUEL GREEN PLC, an Irish public limited company, ILUSTRATO PICTURES INTERNATIONAL INC. OTHER SELLERS November 18, 2024

Exhibit 2.1 STOCK PURCHASE AGREEMENT by and among QUALITY INDUSTRIAL CORP., a Nevada corporation, FUSION FUEL GREEN PLC, an Irish public limited company, ILUSTRATO PICTURES INTERNATIONAL INC. and OTHER SELLERS November 18, 2024 TABLE OF CONTENTS Page ARTICLE I. PURCHASE AND SALE OF THE SELLERS’ SHARES 2 Section 1.01 Purchase and Sale of the Sellers’ Shares 2 Section 1.02 Closing 2 Section 1.03 [Re

March 10, 2025 EX-99.5

QUALITY INDUSTRIAL CORP. CONSOLIDATED BALANCE SHEETS

Exhibit 99.5 QUALITY INDUSTRIAL CORP. CONSOLIDATED BALANCE SHEETS (UNAUDITED) September 30, 2024 Unaudited December 31, 2023 Audited ASSETS Current Assets Cash & Cash Equivalents $ 221,627 $ 2,492 Inventory 1,112,230 - Accounts Receivable 2,347,060 - Deposits, Advances & Prepayments 665,898 - Other Current Assets 2,000,000 2,000,000 Total Current Assets 6,346,815 2,002,492 Non-Current Assets Relat

March 10, 2025 EX-99.3

FUSION FUEL GREEN PLC CONDENSED CONSOLIDATED FINANCIAL STATEMENTS FOR THE SIX MONTHS PERIOD ENDED JUNE 30, 2024 Condensed Consolidated Statement of Financial Position (Unaudited)

Exhibit 99.3 FUSION FUEL GREEN PLC CONDENSED CONSOLIDATED FINANCIAL STATEMENTS FOR THE SIX MONTHS PERIOD ENDED JUNE 30, 2024 Condensed Consolidated Statement of Financial Position (Unaudited) As at, Note 30 June 2024 31 December 2023 (Audited) €’000 €’000 Non-current assets Property, plant and equipment 8 24,296 24,776 Intangible assets 7 4,625 5,076 Other receivables 1,176 1,176 Total non-current

March 10, 2025 EX-99.2

2

Exhibit 99.2 ITEM 4. INFORMATION ON THE COMPANY As used in this item, unless otherwise indicated or the context otherwise requires, references to: ● “Al Shola Gas” are to Al Shola Al Modea Gas Distribution LLC, a UAE company. ● “Class A Ordinary Shares” are to the Company’s Class A ordinary shares with a nominal value of $0.0001 each. ● “Fusion Fuel,” “we,” “us,” “our,” “the Company,” or “our comp

March 10, 2025 EX-99.6

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION AS OF AND FOR THE SIX MONTHS ENDED JUNE 30, 2024, AND FOR THE YEAR ENDED DECEMBER 31, 2023

Exhibit 99.6 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION AS OF AND FOR THE SIX MONTHS ENDED JUNE 30, 2024, AND FOR THE YEAR ENDED DECEMBER 31, 2023 Unaudited Pro Forma Financial Information On November 18, 2024, Fusion Fuel Green PLC, an Irish public limited company (“Fusion Fuel” or “HTOO”), entered into a Stock Purchase Agreement, dated as of November 18, 2024 (the “Purchase Agr

March 10, 2025 EX-99.1

2

Exhibit 99.1 3.D. Risk Factors You should carefully consider the following risk factors and all of the information contained in this document before you decide whether to invest in our securities. One or more of a combination of these risks could materially impact our business, financial condition or results of operations. In any such case, the market price of our securities could decline, and you

March 4, 2025 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, 2025. 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: March, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ir

March 4, 2025 EX-99.1

Fusion Fuel Closes $1.3 Million Follow-On Financing

Exhibit 99.1 Fusion Fuel Closes $1.3 Million Follow-On Financing DUBLIN, Ireland – March 4, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of full-service energy engineering and advisory solutions, today announced that it has closed a $1.3 million private placement of senior convertible notes with certain institutional investors. The senior convert

March 3, 2025 EX-4.1

[FORM OF SENIOR CONVERTIBLE NOTE]

Exhibit 4.1 Final Form [FORM OF SENIOR CONVERTIBLE NOTE] NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF

March 3, 2025 EX-4.2

[FORM OF WARRANT]

Exhibit 4.2 Final Form [FORM OF WARRANT] NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE

March 3, 2025 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, 2025. Commission File Number: 00

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

March 3, 2025 EX-10.2

REGISTRATION RIGHTS AGREEMENT

Exhibit 10.2 Final Form REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of March , 2025, is by and among Fusion Fuel Green PLC, an Irish public limited company with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and the undersigned buyers (each, a “Buyer,” and collectively, the “B

March 3, 2025 EX-10.1

SECURITIES PURCHASE AGREEMENT

Exhibit 10.1 Execution Version SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (the “Agreement”), dated as of February 28, 2025, is by and among Fusion Fuel Green PLC, an Irish public limited company with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and each of the investors listed on the Schedule of Buyers

February 27, 2025 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, 2025. Commission File Number: 00

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

February 27, 2025 EX-99.1

Fusion Fuel Appoints Luisa Ingargiola to Board of Directors

Exhibit 99.1 Fusion Fuel Appoints Luisa Ingargiola to Board of Directors DUBLIN, Ireland – February 27, 2025 – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of gas and hydrogen energy solutions, today announced the appointment of Luisa Ingargiola to its Board of Directors, effective February 24, 2025. Ms. Ingargiola will serve as chairperson of the Audit

February 24, 2025 EX-16.1

1 Stokes Place

Exhibit 16.1 KPMG Audit 1 Stokes Place St. Stephen’s Green Dublin 2 D02 DE03 Ireland Telephone +353 1 410 1000 Fax +353 1 412 1122 Internet www.kpmg.ie February 21, 2025 Securities and Exchange Commission Washington, D.C. 20549 Ladies and Gentlemen: We were previously principal accountants for Fusion Fuel Green PLC, an Irish public limited company (the “Company”), and, under the date of April 30,

February 24, 2025 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, 2025. Commission File Number: 00

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

February 6, 2025 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, 2025. Commission File Number: 00

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, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

February 6, 2025 EX-99.1

Fusion Fuel Announces Decision by Nasdaq Hearings Panel

Exhibit 99.1 Fusion Fuel Announces Decision by Nasdaq Hearings Panel DUBLIN, Ireland, February 6, 2025 (GlobeNewswire) – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of comprehensive energy engineering, advisory, and supply solutions, today announced that the Nasdaq Hearings Panel has found the Company in compliance with Nasdaq Listing Rule 5550(b)(1),

January 31, 2025 EX-99.1

Fusion Fuel to Transfer Equity Listing to The Nasdaq Capital Market; Receives Extension to Comply with Bid Price Rule

Exhibit 99.1 Fusion Fuel to Transfer Equity Listing to The Nasdaq Capital Market; Receives Extension to Comply with Bid Price Rule DUBLIN, Ireland, January 31, 2025 (GlobeNewswire) – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of comprehensive energy engineering, advisory, and supply solutions, today announced that it was notified by the staff of the L

January 31, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 27, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 14, 2025 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: 00

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 13, 2025 EX-99.1

EX-99.1

Exhibit 99.1 Fusion Fuel - Consolidated Balance Sheet as of 26-November-2024 Consolidated pro forma - January 2025 QIND HTOO Pro-forma adjustment Consolidated Pro-Forma Equity Raise Equity balance All figures are in $ USD unless otherwise stated 30-Sep-24 31-Oct-24 26-Nov-24 26-Nov-24 Jan 2025* 31-Jan-25 ASSETS Current Assets Cash and Cash Equivalents 221,627 52,650 274,277 925,000 1,199,277 Inven

January 13, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 13, 2025 EX-4.1

[FORM OF SENIOR CONVERTIBLE NOTE]

Exhibit 4.1 Final Form [FORM OF SENIOR CONVERTIBLE NOTE] NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF

January 13, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 13, 2025 EX-99.1

Fusion Fuel Closes on $1.28 Million Senior Convertible Notes and $25 Million Equity Line of Credit

Exhibit 99.1 Fusion Fuel Closes on $1.28 Million Senior Convertible Notes and $25 Million Equity Line of Credit DUBLIN, Ireland, January 13, 2025 (TBD Newswire) – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of full-service energy engineering and advisory solutions, announced that it has closed a $1.28 million senior convertible notes private placement

January 13, 2025 EX-99.1

Fusion Fuel Closes on $1.28 Million Senior Convertible Notes and $25 Million Equity Line of Credit

Exhibit 99.1 Fusion Fuel Closes on $1.28 Million Senior Convertible Notes and $25 Million Equity Line of Credit DUBLIN, Ireland, January 13, 2025 (TBD Newswire) – Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), a leading provider of full-service energy engineering and advisory solutions, announced that it has closed a $1.28 million senior convertible notes private placement

January 13, 2025 EX-10.2

REGISTRATION RIGHTS AGREEMENT

Exhibit 10.2 Final Form REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of January , 2025, is by and among Fusion Fuel Green PLC, an Irish public limited company with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and the undersigned buyers (each, a “Buyer,” and collectively, the

January 13, 2025 EX-10.1

SECURITIES PURCHASE AGREEMENT

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (the “Agreement”), dated as of January 10, 2025, is by and among Fusion Fuel Green PLC, an Irish public limited company with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and each of the investors listed on the Schedule of Buyers attached hereto (i

January 13, 2025 EX-4.2

[FORM OF WARRANT]

Exhibit 4.2 Final Form [FORM OF WARRANT] NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE

January 13, 2025 EX-10.2

REGISTRATION RIGHTS AGREEMENT

Exhibit 10.2 Final Execution Copy REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of [ ], 2025, is by and between Keystone Capital Partners, LLC, a Delaware limited liability company (the “Investor”), and Fusion Fuel Green PLC, a public limited company formed under the laws of Ireland (the “Company”). RECITALS A. The Company and the Investor have enter

January 13, 2025 EX-10.1

ORDINARY SHARES PURCHASE AGREEMENT Dated as of January [ ], 2025 by and among FUSION FUEL GREEN PLC, KEYSTONE CAPITAL PARTNERS, LLC ORDINARY SHARES PURCHASE AGREEMENT

Exhibit 10.1 Final Execution Copy ORDINARY SHARES PURCHASE AGREEMENT Dated as of January [ ], 2025 by and among FUSION FUEL GREEN PLC, and KEYSTONE CAPITAL PARTNERS, LLC ORDINARY SHARES PURCHASE AGREEMENT This ORDINARY SHARES PURCHASE AGREEMENT is made and entered into as of [ ], 2025 (this “Agreement”), by and among Keystone Capital Partners, LLC, a Delaware limited liability company (the “Invest

January 13, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 13, 2025 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: January, 2025. 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: January, 2025. Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

January 3, 2025 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

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 10 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 T380, Ire

December 26, 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-

6-K 1 ea0226055-6kfusion.htm REPORT OF FOREIGN PRIVATE 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 2024 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victoria

December 12, 2024 EX-99.1

F U S I O N - F U E L | I N V E S T O R P R E S E N T A T I O N D e c e mber 2 02 4 INVESTOR P R E S ENTATION N A S D A Q : H T O O INTRODUCTORY FAST FACTS I N V E S T O R P R E S E N T A T I O N | F U S I O N F U E L ▪ We are a full - service energy

Exhibit 99.1 F U S I O N - F U E L | I N V E S T O R P R E S E N T A T I O N D e c e mber 2 02 4 INVESTOR P R E S ENTATION N A S D A Q : H T O O DISCLAIMER This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green PLC (the “Company”, “HTOO”, or “Fusion Fuel”) . Such statements are “forward looking statements” within the meaning of the “s

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

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 10 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 T380, Ire

December 11, 2024 SC 13G/A

HTOO / Fusion Fuel Green PLC / MAK CAPITAL ONE LLC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 fusion13ga4.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* Fusion Fuel Green PLC (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) December 4, 2024 (Date of Event Which Requires Filing of this

December 6, 2024 SC 13D

QIND / Quality Industrial Corp. / Fusion Fuel Green PLC - SCHEDULE 13D Activist Investment

SC 13D 1 ea0223973-13dfusionquality.htm SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* QUALITY INDUSTRIAL CORP. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 96773L106 (CUSIP Number) John-Paul Backwell c/o Fusion Fuel Green PLC The Victorians 15-

December 3, 2024 SC 13G

HTOO / Fusion Fuel Green PLC / Ilustrato Pictures International Inc. - SCHEDULE 13G Passive Investment

SC 13G 1 ea0223045-13gilustfusion.htm SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Fusion Fuel Green plc (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) November 26, 2024 (Date of Event Which Requires Filing

November 27, 2024 EX-10.1

Form of Lock-Up Agreement

Exhibit 10.1 Form of Lock-Up Agreement This LOCK-UP AGREEMENT (this “Agreement”), dated as of November 22, 2024, is entered into by and among (i) Fusion Fuel Green PLC, an Irish public limited company (the “Purchaser”), (ii) certain holders of securities of the Purchaser as set forth on Schedule A hereto (collectively, the “Purchaser Equityholders”), and (iii) the persons designated as equity hold

November 27, 2024 EX-3.1

FUSION FUEL GREEN PLC CERTIFICATE OF DESIGNATION OF PREFERENCES, BENEFITS AND LIMITATIONS OF SERIES A CONVERTIBLE PREFERRED SHARES

Exhibit 3.1 FUSION FUEL GREEN PLC CERTIFICATE OF DESIGNATION OF PREFERENCES, BENEFITS AND LIMITATIONS OF SERIES A CONVERTIBLE PREFERRED SHARES Fusion Fuel Green PLC, a public limited company incorporated in the Republic of Ireland (the “Corporation”), does hereby certify that, pursuant to the authority contained in its Memorandum and Articles of Association (the “Constitution”), the board of direc

November 27, 2024 EX-99.2

Fusion Fuel Announces Completion of QIND Acquisition and Executive Leadership Changes

EXHIBIT 99.2 Fusion Fuel Announces Completion of QIND Acquisition and Executive Leadership Changes DUBLIN, Nov. 26, 2024 (GLOBE NEWSWIRE) - Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a leader in full-service green hydrogen solutions, today announced the successful closing of its previously disclosed transaction to acquire a controlling stake in Quality Industrial Corp.

November 27, 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 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024. Commission File Number 001-3978

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 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024. Commission File Number 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s D04 C5Y6 Dublin 2, D02 YX

November 20, 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: 001-39789 Fusion Fuel Green PLC (Translation of registrant's name into English) The Victorians 10 Earlsfort Terrace Saint Kevin's Dublin 2, D02 T380, Irela

November 20, 2024 EX-2.1

EX-2.1

Exhibit 2.1

November 20, 2024 EX-99.1

Fusion Fuel Green Agrees to Acquire Majority Stake in Quality Industrial Corp. Expanding into Gas and Engineering Services Acquisition of Profitable, Cash Flow-Generating Business Broadens Service Offerings Across Energy Value Chain

EXHIBIT 99.1 Fusion Fuel Green Agrees to Acquire Majority Stake in Quality Industrial Corp. Expanding into Gas and Engineering Services Acquisition of Profitable, Cash Flow-Generating Business Broadens Service Offerings Across Energy Value Chain DUBLIN, Ireland, Nov. 19, 2024 (GLOBE NEWSWIRE) - Fusion Fuel Green PLC (NASDAQ: HTOO) (“Fusion Fuel” or the “Company”), a leading green hydrogen technolo

November 18, 2024 SC 13G/A

HTOO / Fusion Fuel Green PLC / MAK CAPITAL ONE LLC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 fusion13ga3.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* Fusion Fuel Green PLC (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) November 14, 2024 (Date of Event Which Requires Filing of thi

November 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 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: 001-39789 Fusion Fuel Green PLC (Translation of registrant's name into English) The Victorians 10 Earlsfort Terrace Saint Kevin's Dublin 2, D02 T380, Irela

November 12, 2024 EX-99.1

Fusion Fuel Receives Staff Determination Notice from Nasdaq, Submits Appeal Request

EXHIBIT 99.1 Fusion Fuel Receives Staff Determination Notice from Nasdaq, Submits Appeal Request DUBLIN, Nov. 12, 2024 (GLOBE NEWSWIRE) - Fusion Fuel Green PLC (“Fusion Fuel” or the “Company”) today announced that the Company received a letter (the “Staff Determination Notice”) from the staff of the Listing Qualifications Department (the “Staff”) of The Nasdaq Stock Market LLC (“Nasdaq”). The Staf

September 11, 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 September 2024 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 September 2024 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, I

August 6, 2024 SC 13G/A

HTOO / Fusion Fuel Green PLC / Leahy Richard - SC 13G/A Passive Investment

SC 13G/A 1 d856695dsc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Fusion Fuel Green plc (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) June 30, 2024 (Date of Event Which Requires Filing of this Stateme

June 5, 2024 EX-99.1

1 1Q 2024 UPDATE 3 01 – MANAGEMENT LETTER 4 Dear Shareholders, In any new and fast - paced industry, it's essential to take a step back and appreciate the broader market and competitive dynamics at play . What we see is a green hydrogen sector at a c

Exhibit 99.1 1 1Q 2024 UPDATE 2 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company,” "we,” “us” or “our”) . Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995 . The Company’s actual re

June 5, 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 June 2024 Commission File Number: 001-39789

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 2024 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executiv

June 5, 2024 EX-99.2

ALL RIGHTS BELONG TO FUSION - FUEL 1Q 2024 PRESENTATION ALL RIGHTS BELONG TO FUSION - FUEL ▪ Focus on Fusion ▪ Industry Perspectives ▪ Q1 Highlights ▪ Commercial Update ▪ 2024 Milestones and Priorities AGENDA ALL RIGHTS BELONG TO FUSION - FUEL 01 — F

Exhibit 99.2 ALL RIGHTS BELONG TO FUSION - FUEL 1Q 2024 PRESENTATION ALL RIGHTS BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company,” "we,” “us” or “our”) . Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States

May 22, 2024 424B3

FUSION FUEL GREEN PLC 1,120,329 Class A Ordinary Shares

PROSPECTUS SUPPLEMENT NO. 1 (To Prospectus Dated May 3, 2024) Filed Pursuant to Rule 424(b)(3) Registration No. 333-276880 FUSION FUEL GREEN PLC 1,120,329 Class A Ordinary Shares This prospectus supplement updates information contained in that certain prospectus, dated May 3, 2024 (the “prospectus”), of Fusion Fuel Green Plc (the “Company”), relating to the resale from time to time of up to 1,120,

May 15, 2024 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 2024 Commission Fil

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 2024 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin

May 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 May 2024 Commission File Number: 001-39789

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland

May 8, 2024 EX-99.2

FUSION FUEL GREEN PLC WARRANT TO SUBSCRIBE FOR CLASS A ORDINARY SHARES

Exhibit 99.2 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR

May 8, 2024 EX-99.1

FUSION FUEL GREEN PLC CONVERTIBLE NOTE

Exhibit 99.1 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR

May 8, 2024 424B3

FUSION FUEL GREEN plc 1,120,329 Class A Ordinary Shares

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276880 PROSPECTUS FUSION FUEL GREEN plc 1,120,329 Class A Ordinary Shares This prospectus relates to the offer and sale from time to time by the selling shareholders identified herein or their permitted transferees (each, a “selling shareholder” and collectively, the “selling shareholders”) of up to 1,120,329 Class A ordinary shares, par value

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: 001-39789

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executive

May 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 April 2024 Commission File Number: 001-3978

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executi

May 1, 2024 EX-99.1

EX-99.1

1 s 2 01 — CHAIRMAN’S LETTER 3 Fellow Fusion Fuel Green PLC shareholders: To paraphrase the old saw, before I begin my chairman’s letter, I have two things I want to say:  I have spent my entire professional career as an investor in businesses, both public and private.

May 1, 2024 CORRESP

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland May 1, 2024 Division of Corporation Finance Office of Manufacturing Securities and Exchange Commission 100 F Street, N.

May 1, 2024 F-3/A

As filed with the Securities and Exchange Commission on May 1, 2024

As filed with the Securities and Exchange Commission on May 1, 2024 Registration No.

April 30, 2024 EX-12.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 12.2 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Gavin Jones, certify that: 1. I have reviewed this Annual Report on Form 20-F of Fusion Fuel Green Plc; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

April 30, 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 In connection with the Annual Report of Fusion Fuel Green PLC (“Parent”) on Form 20-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), the undersigned, in the capacity and on the date in

April 30, 2024 EX-12.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 12.1 CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Frederico Figueira de Chaves, certify that: 1. I have reviewed this Annual Report on Form 20-F of Fusion Fuel Green Plc; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumst

April 30, 2024 EX-97.1

Fusion Fuel Green plc CLAWBACK POLICY

Exhibit 97.1 Fusion Fuel Green plc CLAWBACK POLICY Introduction The Board of Directors (the “Board”) of Fusion Fuel Green PLC (the “Company”) believes that it is in the best interests of the Company and its shareholders to create and maintain a culture that emphasizes integrity and accountability and that reinforces the Company's pay-for-performance compensation philosophy. The Board has therefore

April 30, 2024 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Fusion Fuel Green PLC (“Parent”) on Form 20-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), the undersigned, in the capacity and on the date in

April 30, 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 statements (No. 333-251990, 333-264714 and 333-276880) on Form F-3 and (No. 333-258543) on Form S-8 of our report dated April 30, 2024, with respect to the consolidated financial statements of Fusion Fuel Green plc. /s/ KPMG Dublin, Ireland April 30, 2024

April 30, 2024 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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

March 27, 2024 SC 13G

HTOO / Fusion Fuel Green PLC / Leahy Richard - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Fusion Fuel Green plc (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) March 20, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

March 27, 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: 001-3978

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Irela

March 26, 2024 CORRESP

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland March 26, 2024 Division of Corporation Finance Office of Manufacturing Securities and Exchange Commission 100 F Street, N.

March 25, 2024 CORRESP

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland

Fusion Fuel Green PLC The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ireland March 25, 2024 Division of Corporation Finance Office of Manufacturing Securities and Exchange Commission 100 F Street, N.

March 22, 2024 F-3/A

As filed with the Securities and Exchange Commission on March 22, 2024

As filed with the Securities and Exchange Commission on March 22, 2024 Registration No.

March 22, 2024 EX-FILING FEES

Calculation of Filing Fee Tables Form F-3 (Form Type) Fusion Fuel Green plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables Form F-3 (Form Type) Fusion Fuel Green plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Proposed Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Fees to Be Paid Equity Ordinary Shares Rule 456(c) 46,482,518 1.

March 20, 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: 001-3978

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Irela

March 6, 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: 001-3978

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executi

March 6, 2024 EX-99.1

This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company,” "we,” “us” or “our”). Such statements are “forward looking statements” within the meaning of the “safe harbor”

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company,” "we,” “us” or “our”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from

March 6, 2024 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL 4Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL ▪ Focus on Fusion ▪ Industry POV ▪ Q4 Financials & Highlights ▪ Business Update ▪ 2024 Milestones and Priorities ▪ Q&A AGENDA ALL RIG HT S BELONG TO FUSION

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL 4Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securitie

February 27, 2024 EX-99.1

Notice of Extraordinary General Meeting 2024 TABLE OF CONTENTS

Exhibit 99.1 Notice of Extraordinary General Meeting 2024 TABLE OF CONTENTS Page Letter from Chairperson 1 Notice of Extraordinary General Meeting 4 Questions and Answers about the Extraordinary General Meeting 6 Additional Information 9 Fusion Fuel Green plc (the “Company”) (Registered in Ireland No. 669283) Directors Registered Office Jeffrey E. Schwarz Frederico Perez Marques Figueira de Chaves

February 27, 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: 005-

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, I

February 6, 2024 EX-FILING FEES

Calculation of Filing Fee Tables Form F-3 (Form Type) Fusion Fuel Green plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables Form F-3 (Form Type) Fusion Fuel Green plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Proposed Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Fees to Be Paid Equity Ordinary Shares Rule 456(c) 46,482,518 1.

February 6, 2024 F-3

As filed with the Securities and Exchange Commission on February 6, 2024

As filed with the Securities and Exchange Commission on February 6, 2024 Registration No.

January 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: January 2024 Commission File Number: 005-9

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: January 2024 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, Ir

December 28, 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: December 2023 Commission File Number: 005-

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 2023 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, I

December 18, 2023 SC 13G

HTOO / Fusion Fuel Green PLC / MAK CAPITAL ONE LLC - SC 13G Passive Investment

SC 13G 1 fusion13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Fusion Fuel Green PLC (Name of Issuer) Class A Ordinary Shares, $0.0001 par value per share (Title of Class of Securities) G3R25D 118 (CUSIP Number) November 27, 2023 (Date of Event Which Requires Filing of this Statement) Ch

December 18, 2023 EX-1

JOINT FILING AGREEMENT

EX-1 2 ex1.htm EXHIBIT 1 EXHIBIT 1 JOINT FILING AGREEMENT This Joint Filing Agreement, dated as of December 15, 2023 is by and among MAK Capital One L.L.C., Michael A. Kaufman and MAK Capital Fund LP. Pursuant to and in accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, each of the filers hereby agree to be responsible for the timely filing of the Sche

December 4, 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 December 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 December 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal exec

December 4, 2023 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL 3Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL ▪ Focus on Fusion ▪ Industry POV ▪ Q3 Financials & Highlights ▪ Business Update ▪ 2023 Milestones and Priorities ▪ Q&A AGENDA ALL RIG HT S BELONG TO FUSION

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL 3Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securitie

December 4, 2023 EX-99.1

This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the Uni

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, es

November 27, 2023 EX-10.1

SECURITIES SUBSCRIPTION AGREEMENT

Exhibit 10.1 SECURITIES SUBSCRIPTION AGREEMENT This SECURITIES SUBSCRIPTION AGREEMENT (the “Agreement”), dated as of November 21, 2023, is by and among Fusion Fuel Green PLC, a public limited company incorporated in Ireland with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and each of the investors signatory hereto (individ

November 27, 2023 EX-99.1

Fusion Fuel Green Announces Strategic Tranched Financing from Belike Nominees Pty Ltd., a Macquarie Group Company

EXHIBIT 99.1 Fusion Fuel Green Announces Strategic Tranched Financing from Belike Nominees Pty Ltd., a Macquarie Group Company DUBLIN, Ireland, Nov. 27, 2023 (GLOBE NEWSWIRE) - Fusion Fuel Green PLC (Nasdaq: HTOO) (“Fusion Fuel” or the “Company”), an emerging leader in the green hydrogen sector, today announced that it has entered into an agreement with Macquarie Group’s Commodities and Global Mar

November 27, 2023 EX-4.2

FUSION FUEL GREEN PLC WARRANT TO SUBSCRIBE FOR CLASS A ORDINARY SHARES

Exhibit 4.2 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR T

November 27, 2023 EX-10.2

REGISTRATION RIGHTS AGREEMENT

Exhibit 10.2 REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of November 21, 2023, is by and among Fusion Fuel Green PLC, a public limited company formed under the laws of Ireland with offices located at The Victorians, 15-18 Earlsfort Terrace, Saint Kevin’s, Dublin 2, D02 YX28, Ireland (the “Company”), and the undersigned subscribers (each, a “Buyer,”

November 27, 2023 EX-4.1

FUSION FUEL GREEN PLC CONVERTIBLE NOTE

Exhibit 4.1 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR T

November 27, 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: 001-3

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 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15 - 18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

November 7, 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: 005-9

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant's name into English) The Victorians 10 Earlsfort Terrace Saint Kevin's Dublin 2, D02 T380, Irela

November 7, 2023 EX-99.1

Fusion Fuel Green Receives Nasdaq Deficiency Notice Regarding Minimum Bid Price Requirement Ordinary shares will continue to trade on the Nasdaq Global Market, and the Company’s listing on such exchange is not affected by the receipt of the Notice

EXHIBIT 99.1 Fusion Fuel Green Receives Nasdaq Deficiency Notice Regarding Minimum Bid Price Requirement Ordinary shares will continue to trade on the Nasdaq Global Market, and the Company’s listing on such exchange is not affected by the receipt of the Notice DUBLIN, Ireland, Nov. 07, 2023 (GLOBE NEWSWIRE) - On November 7, 2023, Fusion Fuel Green Plc (NASDAQ: HTOO) (the “Company”), an emerging le

October 10, 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 October 2023 Commission File Number: 001-39

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 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians, 15 - 18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

October 2, 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 October 2023 Commission File Number: 001-39

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 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians, 15 - 18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28,

September 19, 2023 EX-99.1

Notice of Annual General Meeting 2023 TABLE OF CONTENTS

Exhibit 99.1 Notice of Annual General Meeting 2023 TABLE OF CONTENTS Page Letter from Chairperson 1 Notice of Annual General Meeting 6 Questions and Answers about the Annual General Meeting 8 Additional Information 12 Fusion Fuel Green plc (the “Company”) (Registered in Ireland No. 669283) Directors Registered Office Jeffrey E. Schwarz Frederico Perez Marques Figueira de Chaves João Teixeira Wahno

September 19, 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 September 2023 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 September 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal exe

August 30, 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: 001-397

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: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal execut

August 30, 2023 EX-99.1

This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the Uni

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, es

August 30, 2023 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL 2Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL ▪ Focus on Fusion ▪ Q2 Financials & Highlights ▪ Projects Update ▪ Technology Update ▪ 2023 Milestones and Priorities ▪ Q&A AGENDA ALL RIG HT S BELONG TO F

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL 2Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securitie

July 10, 2023 424B5

Up to $10,000,000 FUSION FUEL GREEN PLC Class A Ordinary Shares

Amendment No. 1 Filed pursuant to Rule 424(b)(5) (to Prospectus Supplement dated June 6, 2022 Registration No. 333-264714 to Prospectus dated May 13, 2022) Up to $10,000,000 FUSION FUEL GREEN PLC Class A Ordinary Shares This amendment no. 1, or this “Amendment,” amends our prospectus supplement dated June 6, 2022, or the “Prospectus Supplement.” This Amendment should be read in conjunction with th

June 8, 2023 EX-10.2

sEPARATION agreement

Exhibit 10.2 Execution Version CERTAIN PORTIONS OF THIS EXHIBIT AS FILED VIA EDGAR HAVE BEEN OMITTED. OMITTED INFORMATION HAS BEEN REPLACED IN THIS EXHIBIT WITH A PLACEHOLDER IDENTIFIED BY THE MARK “[***].” sEPARATION agreement This Separation Agreement (“Agreement”) is entered into by and between Fusion Fuel USA, Inc., a Delaware corporation (“FFUSA”), Fusion Fuel Green PLC, an Irish public limit

June 8, 2023 EX-10.1

sEPARATION agreement

Exhibit 10.1 Execution Version CERTAIN PORTIONS OF THIS EXHIBIT AS FILED VIA EDGAR HAVE BEEN OMITTED. OMITTED INFORMATION HAS BEEN REPLACED IN THIS EXHIBIT WITH A PLACEHOLDER IDENTIFIED BY THE MARK “[***].” sEPARATION agreement This Separation Agreement (“Agreement”) is entered into by and between Fusion Fuel USA, Inc., a Delaware corporation (“FFUSA”), Fusion Fuel Green PLC, an Irish public limit

June 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 June 2023 Commission File Number: 001-39789

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 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executiv

June 8, 2023 EX-99.1

Fusion Fuel Announces Leadership Changes and Key Management Appointments to Support Next Phase of Strategic Growth

Exhibit 99.1 Fusion Fuel Announces Leadership Changes and Key Management Appointments to Support Next Phase of Strategic Growth SABUGO, Portugal, June 05, 2023 (GLOBE NEWSWIRE) - Fusion Fuel Green plc (NASDAQ: HTOO) today announced several senior leadership changes to sharpen its strategic focus and seek to unlock long-term growth and profitability. Frederico Figueira de Chaves, currently Co-Head

June 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 June 2023 Commission File Number: 001-39789

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 2023 Commission File Number: 001-39789 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executiv

June 5, 2023 EX-99.1

This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the Uni

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, es

June 5, 2023 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL 1Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL ▪ Chairman’s Remarks ▪ Focus on Fusion ▪ Q1 Financials & Highlights ▪ Projects Update ▪ Technology & ▪ 2023 Milestones ▪ Q&A AGENDA ALL RIG HT S BELONG TO

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL 1Q 2023 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securitie

May 16, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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

May 16, 2023 EX-99.1

List of Relevant Territories for the Purposes of Irish Dividend Withholding Tax

Exhibit 99.1 List of Relevant Territories for the Purposes of Irish Dividend Withholding Tax 1. Albania 48. Morocco 2. Armenia 49. Netherlands 3. Australia 50. New Zealand 4. Austria 51. Norway 5. Bahrain 52. Pakistan 6. Belarus 53. Panama 7. Belgium 54. Poland 8. Bosnia and Herzegovina 55. Portugal 9. Botswana 56. Qatar 10. Bulgaria 57. Romania 11. Canada 58. Russia 12. Chile 59. Saudi Arabia 13.

May 16, 2023 EX-10.19

The picture can't be displayed. J \ \ Cs j Triple - Net Lease Agreement for non - housing purposes regarding urban industrial property located in Benavente "Fusion Factory" BY AND BETWEEN SCPI CORUM EURI0N - SUCURSAL EM PORTUGAL as landlord AND FUSIO

Exhibit 10.19 The picture can't be displayed. J \ \ Cs j Triple - Net Lease Agreement for non - housing purposes regarding urban industrial property located in Benavente "Fusion Factory" BY AND BETWEEN SCPI CORUM EURI0N - SUCURSAL EM PORTUGAL as landlord AND FUSION FUEL PORTUGAL, S.A. as tenant AND FUSION FUEL GREEN PLC. as guarantor Lisbon, 20 December 2022 The picture can't be displaye d. TABLE

May 16, 2023 EX-10.18

The picture can't be displayed. Promissory Sale and Purchase Agreement of real estate property located in Benavente "Fusion Factory" BY AND BETWEEN FUSION FUEL PORTUGAL, S.A. as Promissory Seller AND SCPI CORUM EURION - SUCURSAL EM PORTUGAL as Promis

Exhibit 10.18 The picture can't be displayed. Promissory Sale and Purchase Agreement of real estate property located in Benavente "Fusion Factory" BY AND BETWEEN FUSION FUEL PORTUGAL, S.A. as Promissory Seller AND SCPI CORUM EURION - SUCURSAL EM PORTUGAL as Promissory Purchaser AND FUSION FUEL GREEN PLC. as guarantor Lisbon, 1 6 December 2022 2 /27 TABLE OF CONTENTS THE PARTIES ... . .......... ..

May 16, 2023 EX-10.17

SHAREHOLDERS’ AGREEMENT FUSION FUEL SPAIN, S.L. 22 July 2021 DocuSign Envelope ID: A8EDC92E - 2DBD - 4C58 - AFE3 - DC64E5084311 2 Execution version FUSION FUEL SPAIN SHAREHOLDERS’ AGREEMENT By and Between : GREATREX FAMILY ENTERPRISES, LDA , a compan

Exhibit 10.17 SHAREHOLDERS’ AGREEMENT FUSION FUEL SPAIN, S.L. 22 July 2021 DocuSign Envelope ID: A8EDC92E - 2DBD - 4C58 - AFE3 - DC64E5084311 2 Execution version FUSION FUEL SPAIN SHAREHOLDERS’ AGREEMENT By and Between : GREATREX FAMILY ENTERPRISES, LDA , a company duly incorporated under the laws of Portugal, registered with the Registry Office under the number 509479359 , with registered address

May 16, 2023 EX-4.4

DESCRIPTION OF SECURITIES

Exhibit 4.4 DESCRIPTION OF SECURITIES The following description of the material terms of the share capital of Parent includes a summary of specified provisions of Parent’s M&A. This description is qualified by reference to Parent’s M&A filed as an exhibit to this Annual Report and incorporated herein by reference. General Parent is a public limited company organized and existing under the laws of

May 16, 2023 EX-21

List of Subsidiaries

Exhibit 21 List of Subsidiaries Company Jurisdiction of Formation Fusion Fuel Portugal, S.

May 1, 2023 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 OMB APPROVAL FORM 12b-25 OMB Number: 3235-0058 Expires: April 30, 2025 Estimated average burden Hours per form 2.50 NOTIFICATION OF LATE FILING SEC FILE NUMBER 001-39789 CUSIP NUMBER G3R25D 118 (Check One): ☐ Form 10-K ☒ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-SAR ☐ Form N-CSR For Period Ended: December 31, 2022

February 28, 2023 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL Q4 2022 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL ▪ Focus on Fusion ▪ Q4 Financials & Highlights ▪ Tech Update ▪ Commercial Strategy Update ▪ 2023 Milestones ▪ Q&A AGENDA ALL RIG HT S BELONG TO FUSION - FU

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL Q4 2022 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL 2 SAFE HARBOR STATEMENT This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”) . Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Privat

February 28, 2023 EX-99.1

Q4

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, es

February 28, 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: 005-9

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal exec

December 23, 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: December 2022 Commission File Number: 005-

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 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, I

December 23, 2022 EX-99.1

Fusion Fuel Completes €9 million Sale and Leaseback of Benavente Factory to CORUM Eurion Sale leaseback transaction strengthens Fusion Fuel’s balance sheet and provides flexibility to fund future growth initiatives

EXHIBIT 99.1 Fusion Fuel Completes ?9 million Sale and Leaseback of Benavente Factory to CORUM Eurion Sale leaseback transaction strengthens Fusion Fuel?s balance sheet and provides flexibility to fund future growth initiatives SABUGO, Portugal, Dec. 23, 2022 (GLOBE NEWSWIRE) - Fusion Fuel (NASDAQ: HTOO) (?Fusion Fuel? or the ?Company?) announced today that the Company has completed a sale and lea

December 14, 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: December 2022 Commission File Number: 005-

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 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin’s Dublin 2, D02 YX28, I

December 14, 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: December 2022 Commission File Number: 005-

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 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin?s Dublin 2, D02 YX28, I

December 14, 2022 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: December 2022 Commissi

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: December 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) The Victorians 15-18 Earlsfort Terrace Saint Kevin?s D

November 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 November 2022 Commission File Number: 005-9

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant’s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal exec

November 28, 2022 EX-99.2

ALL RIG HT S BELONG TO FUSION - FUEL Q3 2022 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL AGENDA ▪ Focus on Fusion ▪ Q3 Financials & Highlights ▪ Commercial Update ▪ Production & Tech ▪ 2022 Milestones ▪ Chairman’s Remarks ▪ Q&A ALL RIG HT S BEL

Exhibit 99.2 ALL RIG HT S BELONG TO FUSION - FUEL Q3 2022 PRESENTATION ALL RIG HT S BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securitie

November 28, 2022 EX-99.1

Q3

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, es

September 21, 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: September 2022 Commission File Number: 005

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: September 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) The Victorians, 15-18 Earlsfort Terrace, Saint Kevin's, Dublin 2, D02 YX2

September 8, 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 September 2022 Commission File Number: 005-

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 September 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal exe

September 8, 2022 EX-99.1

Q2

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the ?Company?). Such statements are ?forward looking statements? within the meaning of the ?safe harbor? provisions of the United States Private Securities Litigation Reform Act of 1995. The Company?s actual results may differ from its expectations, es

September 8, 2022 EX-99.2

Second Quarter 2022 Results 8 September 2022 ALL RIGHTS BELONG TO FUSION - FUEL AGENDA ▪ Chairman’s Remarks ▪ Focus on Fusion ▪ Q2 Financials & Highlights ▪ Production & Tech ▪ Commercial Update • Growth Strategy • Commercial Platforms • Market Expan

Exhibit 99.2 Second Quarter 2022 Results 8 September 2022 ALL RIGHTS BELONG TO FUSION - FUEL — Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he “Company”). Such statements are “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Re

September 1, 2022 EX-99.1

Notice of Annual General Meeting 2022 TABLE OF CONTENTS

Notice of Annual General Meeting 2022 TABLE OF CONTENTS Page Letter from Chairperson 1 Notice of Annual General Meeting 5 Questions and Answers about the Annual General Meeting 7 Additional Information 11 Fusion Fuel Green plc (the ?Company?) (Registered in Ireland No.

September 1, 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: 005-91

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal execu

August 5, 2022 POS AM

As filed with the Securities and Exchange Commission on August 5, 2022

As filed with the Securities and Exchange Commission on August 5, 2022 Registration No.

July 29, 2022 POS AM

As filed with the Securities and Exchange Commission on July 29, 2022

As filed with the Securities and Exchange Commission on July 29, 2022 Registration No.

June 6, 2022 EX-1.1

At Market Issuance Sales Agreement by and among the Company, B. Riley Securities, Inc., Fearnley Securities Inc. and H.C. Wainwright & Co., LLC, dated June 6, 2022.

EX-1.1 2 exh11.htm EXHIBIT 1.1 Exhibit 1.1 FUSION FUEL GREEN PLC Class A Ordinary Shares (par value $0.0001 per share) At Market Issuance Sales Agreement June 6, 2022 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Fearnley Securities Inc. 880 Third Avenue, 16th Floor New York, New York 10022 H.C. Wainwright & Co., LLC 430 Park Avenue New York, NY 10022 Ladies and Gentleme

June 6, 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: June 2022 Commission File Number: 005-9191

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 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executi

June 6, 2022 424B5

Up to $30,000,000 FUSION FUEL GREEN PLC Class A Ordinary Shares

Prospectus Supplement Filed pursuant to Rule 424(b)(5) (To Prospectus dated May 13, 2022) Registration No.

May 26, 2022 EX-99.2

Q1 2022 Presentation 24 May 2022 ALL RIGHTS BELONG TO FUSION - FUEL AGENDA ▪ Focus on Fusion ▪ Q1 Financials & Highlights ▪ Key Markets, Projects Contracted & Grants ▪ Production & Tech ▪ Team ▪ Chairman’s Remarks ▪ Q&A ALL RIGHTS BELONG TO FUSION -

Exhibit 99.2 Q1 2022 Presentation 24 May 2022 ALL RIGHTS BELONG TO FUSION - FUEL ? Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (t he ?Company?). Such statements are ?forward looking statements? within the meaning of the ?safe harbor? provisions of the United States Private Securities Litigation Ref orm Act of

May 26, 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: 005-91913

6-K 1 f6k052622.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 May 2022 Commission File Number: 005-91913 Fusion Fuel Green PLC (Translation of registrant's name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (A

May 26, 2022 EX-99.1

Q1

Exhibit 99.1 Disclaimer This presentation includes statements of future events, conditions, expectations, and projections of Fusion Fuel Green plc (the ?Company?). Such statements are ?forward looking statements? within the meaning of the ?safe harbor? provisions of the United States Private Securities Litigation Reform Act of 1995. The Company?s actual results may differ from its expectations, es

May 26, 2022 EX-99.1

Fusion Fuel Green Hosts First Quarter 2022 Investor Update

EXHIBIT 99.1 Fusion Fuel Green Hosts First Quarter 2022 Investor Update SABUGO, Portugal, May 26, 2022 (GLOBE NEWSWIRE) - Fusion Fuel Green PLC (NASDAQ: HTOO) ("Fusion Fuel"), an emerging leader in the green hydrogen sector, today announced financial results for the first quarter ended March 31, 2022. The quarterly shareholder letter is available at https://ir.fusion-fuel.eu/financials-filings/ear

May 26, 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: 005-91913

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant?s name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executive

May 11, 2022 CORRESP

FUSION FUEL GREEN PLC 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland May 11, 2022

FUSION FUEL GREEN PLC 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland May 11, 2022 VIA EDGAR Mr.

May 5, 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: 005-91913

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: 005-91913 Fusion Fuel Green PLC (Translation of registrant's name into English) 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland (Address of principal executive

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