X0708 D LIVE 0001819794 Fusion Fuel Green PLC 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 353 1 961 9350 IRELAND Fusion Fuel Green Ltd Corporation true Frederico Figueira de Chaves 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Executive Officer Director CEO, CSO, CFO a.i. & Director James Passin 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Director Chair Steven Gold 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Director Pierce Crosby 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Director Luisa Ingargiola 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Director John-Paul Backwell 9 PEMBROKE STREET UPPER DUBLIN 2 DUBLIN L2 IRELAND D02 KR83 Director Other Energy Decline to Disclose 06b false 2026-08-07 false true true true false Class A ordinary shares, nominal value $0.0035 per share Pre-Funded Warrants (exercise price: $0.0035 per share; immediately exercisable) Common Warrants (3-year term; exercise price: $3.50 per share) 0 1525000 1525000 0 false 13 0 0 1525000 General corporate and working capital purposes Payment of fees and expenses in connection with the transactions contemplated by the Securities Purchase Agreement false Fusion Fuel Green PLC Frederico Figueira de Chaves Frederico Figueira de Chaves Chief Executive Officer 2026-08-13