26 June 2026

AMPEAK ENERGY LIMITED

("Ampeak Energy" "Ampeak" or the "Company")

Notice of Annual General Meeting

and

Ampeak Energy proposed Board appointments

Ampeak Energy announces that it has today made available to shareholders the Notice of 2026 Annual General Meeting ("AGM") and the Form of Proxy.

The Notice of AGM is available to view on the Company's website here.

Printed copies of the Notice of AGM and the Form of Proxy are being mailed or made available to shareholders, in line with shareholder communication preferences.

The AGM will be held at 11am on Monday, 13 July 2026 at the offices of Ashurst LLP, London Fruit & Wool Exchange, 1 Duval Square, London, E1 6PW.

Proposed Board appointments

Following the announcement early this year that Patrick Hughes had become Ampeak's largest shareholder, management have engaged with Patrick Hughes and his team, and the Company is pleased to announce the proposed appointments of two members of Patrick's senior leadership team to the Ampeak Board as Non-Executive Directors.

It is intended that Scott Martin and Mark Dawber (biographies below) will be joining the Ampeak Board following the conclusion of the Company's AGM. They bring significant experience in the energy and technology space and will help support the Company as it continues to deliver against its goals.

The proposed appointees have been nominated by SIMEC UK Energy Holding Limited ("SUEH") under the terms of the Relationship Agreement between the Company and SUEH. SUEH has a 29.6% interest in Ampeak and the ultimate beneficial owner of SUEH is Patrick Hughes.

In addition, David Taaffe, current Ampeak Chief Operating Officer, has also been nominated to join the Board, bringing a wealth of experience and a track record of delivery. It is intended that David will join the Board following conclusion of the AGM.

David Taaffe

David was appointed Chief Operating Officer in June 2022, having previously been responsible for project development and delivery since joining Ampeak in 2011. David holds responsibility for Ampeak's project portfolio, including the origination, strategic development and project financing of the Company's significant portfolio of Battery Storage projects. In recent years, David has been instrumental in achieving financial close of the AW1 Battery Storage project and establishing Ampeak's pipeline of a further 4.3GWh of Battery Storage development projects.

Prior to joining Ampeak, David worked for a number of international consultancies and developers and successfully delivered large scale energy projects in Ireland, UK, and New Zealand. David has a BEng (Hons) in Electrical Engineering from University College Dublin.

Mark Dawber

Mark Dawber is currently Managing Director of Valencia Energy, a privately owned UK renewable energy generation portfolio, where he holds full accountability for the business, all operations, energy trading, and the development of new projects.

Alongside this, Mark is Co-founder and Chief Energy and Infrastructure Officer of Era4, leading Energy Strategy, site development and delivery for sovereign AI infrastructure.

Mark brings deep operational expertise across the UK power sector, with a track record in technology development and deployment, reciprocating gas engine projects, behind the meter generation, PPA origination and energy trading.

Prior to Valencia, Mark spent over a decade at Viridor across operational, engineering and senior leadership roles, including Head of Power Generation for the national landfill gas estate, where he led a step change in availability, compliance and commercial performance across the portfolio.

Mark is a Chartered Fellow of the Chartered Management Institute (CMgr FCMI) and holds an MBA from Cranfield University and a BEng in Mechanical Engineering from the University of Southampton.

Scott Martin

Scott Martin is currently Group CFO of Patrick Hughes' family office, overseeing Mr Hughes' interests in companies across a variety of interests, including waste management, power generation, AI infrastructure and real estate.

Prior to this, Scott spent around four years as Finance Director of another family office advising on a portfolio spanning private equity, hedge funds, real estate, public equities and fixed income. He trained with PwC in London within the Asset and Wealth Management practice.

Scott is a Chartered Accountant (ACA) and holds a First Class Honours degree in Accounting and Finance from the University of Strathclyde.

Graham Reid, Ampeak Energy CEO, commented: "On behalf of the Board, I look forward to welcoming Scott and Mark to the Board alongside David. Their depth of expertise and industry knowledge will significantly strengthen the Board as we execute on our strategy and capitalise on the opportunities ahead. We are confident their contributions will support the next phase of our growth."

ENDS

For further information, please contact:

Notes to Editors

Ampeak Energy is a global developer, owner and operator of sustainable energy projects. Ampeak Energy owns the world's flagship tidal stream project, MeyGen, and the Uskmouth Power Station site, which is being repurposed into a sustainable energy park that will become one of the UK's largest battery energy storage sites. www.ampeak.energy

Ampeak Energy's strategy: "Building a Sustainable Future to 2035", can be viewed here

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