Oversubscribed Retail Offer

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS RESTRICTED AND NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN OR INTO THE UNITED STATES OF AMERICA, CANADA, AUSTRALIA, JAPAN, THE REPUBLIC OF SOUTH AFRICA OR ANY OTHER JURISDICTION IN WHICH SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL. PLEASE SEE THE IMPORTANT NOTICE AT THE END OF THIS ANNOUNCEMENT.

THE COMMUNICATION OF THIS ANNOUNCEMENT AND ANY OTHER DOCUMENTS OR MATERIALS RELATING TO THE RETAIL OFFER AS A FINANCIAL PROMOTION IS ONLY BEING MADE TO, AND MAY ONLY BE ACTED UPON BY, THOSE PERSONS IN THE UNITED KINGDOM FALLING WITHIN ARTICLE 43 OF THE FINANCIAL SERVICES AND MARKETS ACT 2000 (FINANCIAL PROMOTION) ORDER 2005, AS AMENDED. ANY INVESTMENT OR INVESTMENT ACTIVITY TO WHICH THIS ANNOUNCEMENT RELATES IS AVAILABLE ONLY TO SUCH PERSONS AND WILL BE ENGAGED IN ONLY WITH SUCH PERSONS. THIS ANNOUNCEMENT IS FOR INFORMATIONAL PURPOSES ONLY, AND DOES NOT CONSTITUTE OR FORM PART OF ANY OFFER OR INVITATION TO SELL OR ISSUE, OR ANY SOLICITATION OF AN OFFER TO PURCHASE OR SUBSCRIBE FOR, ANY SECURITIES OF POWERHOUSE ENERGY GROUP PLC.

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION FOR THE PURPOSES OF THE MARKET ABUSE REGULATION (EU) 596 / 2014 WHICH FORMS PART OF UK LAW BY VIRTUE OF THE EUROPEAN UNION (WITHDRAWAL) ACT 2018 ("UK MAR"). UPON THE PUBLICATION OF THIS ANNOUNCEMENT, THIS INSIDE INFORMATION IS NOW CONSIDERED TO BE IN THE PUBLIC DOMAIN AND SUCH PERSONS SHALL THEREFORE CEASE TO BE IN POSSESSION OF INSIDE INFORMATION.

27 April 2026

Powerhouse Energy Group plc

("Powerhouse" or the "Company")

Oversubscribed Retail Offer

and

Posting of Notice of General Meeting

Powerhouse Energy Group plc (AIM: PHE), a UK company pioneering integrated technology that converts non-recyclable waste into low carbon energy with its revenue generating engineering consulting subsidiary ("Engsolve"), announces that the Retail Offer announced on 23 April 2026 and which closed at 16:30 pm on 24 April 2026, was oversubscribed and raised the Company's target of £250,000, before expenses.

Accordingly, subject to the passing of Resolution 2 at the forthcoming General Meeting (12.00 pm on 14 May 2026), the Retail Offer will result in the issue of a total of 125 million Retail Offer Shares at the Issue Price of 0.2 pence per share. As a result, the Company has raised a total of £650,000 pursuant to the Placing and Retail Offer, conditional on the passing of Resolution 2 at the General Meeting.

As previously announced, completion of the Placing provided the Company with a cash runway, to undertake planned activities, until the end of the year. Completion of the Retail Offer now extends this well into Q1 2027.

Notice of General Meeting and posting of Circular

The Circular and Notice of General Meeting are available on the Company's website and are being posted to shareholders today.

Admission and Total Voting Rights and issue of Warrants

Assuming Resolution 2 is passed, application will be made to the London Stock Exchange for admission of the New Ordinary Shares, the Placing Shares and the Retail Offer Shares to trading on AIM. It is expected that Admission will become effective and dealings in the New Ordinary Shares, the Placing Shares and the Retail Offer Shares will commence on AIM at 8.00 a.m. on or around 18 May 2026 ("Admission").

The Placing Shares and Retail Offer Shares will be issued fully paid and will rank pari passu in all respects with the Company's other New Ordinary Shares.

Following Admission, the total number of Ordinary Shares in the capital of the Company in issue will be 4,796,654,741, all with voting rights. This figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company's share capital pursuant to the Financial Conduct Authority's Disclosure Guidance and Transparency Rules.

In connection with the Placing and Retail Offer, Turner Pope will be issued 32.5 million share purchase warrants, with an exercise price of 0.2 pence, and an expiry term of 3 years from Admission.

Paul Emmitt, Powerhouse CEO, commented:

"We are delighted with the take up that we have seen through the oversubscribed Retail Offer and would like to thank all those investors who took part for their conditional commitments.  The Board believe that the Capital Reorganisation, to facilitate, inter alia, completion of the Placing and the Retail Offer to be in the best interests of the Company and recommend that investors vote in favour of the Resolutions to be proposed at the General Meeting, as the Board intend to do in respect of their aggregate beneficial holdings."

Unless otherwise defined, definitions contained in this Announcement have the same meaning as set out in the announcement made by the Company on 23 April 2026.

For more information, please visit www.phegroup.com or contact:

About Powerhouse Energy Group plc

Powerhouse Energy has developed a process technology which can utilise waste plastic, end-of-life-tyres, and other waste streams to convert them efficiently and economically into syngas from which valuable products such as chemical precursors, hydrogen, electricity, heat and other industrial products may be derived. PHE's process produces low levels of safe residues and requires a small operating footprint, making it suitable for deployment at enterprise and community level.

Powerhouse also incorporates Engsolve Ltd, which is a revenue generating business offering Engineering Services across all sectors, with speciality services in the development of new technologies and clean energy.