Half-year Financial Report

21 September 2026

Powerhouse Energy Group plc

("Powerhouse", “PHE”, the “Group” or the "Company")

Half Year Report for the six months ended 30 June 2026

Powerhouse Energy Group plc (AIM: PHE), the UK technology company pioneering integrated technology that converts non-recyclable waste into low carbon energy together with a revenue generating engineering consulting division (Engsolve), is pleased to announce its unaudited half year report for the six months ended 30 June 2026.

Highlights

Corporate

Commercial Development

Technology and Innovation

Financial Performance

The Group’s revenues for the half year ended 30 June 2026 increased compared to the previous year’s figures due to the additional sales orders Engsolve received in the first half of 2025 and the third party work being undertaken by PHE.

Fundraise

Outlook

Statement from David Hitchcock, Interim Executive Chairman of Powerhouse Energy Group Plc

“PHE started 2026 with great momentum. During the period the Company, through its focused business strategy, has continued to progress with our prioritised projects with National Hydrogen Australia and at Ballymena; delivering key project milestones. We were also very pleased to see that this momentum enabled us to record our first revenues into PHE through the provision of third party services. The Engsolve team has also been extremely active delivering a very strong order book in H1 which continues to contribute greatly to the Group, bringing new revenue streams into the Company whilst continuing to provide support to PHE and its strategy.

We are also very pleased to be able to report that our pipeline of potential opportunities continues to grow as we further increase awareness of our technology and its capabilities whilst utilising the fully functional Feedstock Testing Unit (“FTU”) for our partners to come to see and test. We will continue this as well as our commercial validation process with a view to advancing them whilst minimising any costs incurred to Powerhouse.

The operation and ongoing improvements of the FTU at the Powerhouse Technology Centre has also been a major step change in PHE’s ability to further advance as well as promote our technology and expertise. The Centre has shown it is an invaluable marketing asset in helping support the Company’s investments in our capital projects in Northern Ireland thereby building a higher level of confidence in clients and Investors alike; and has also been reflected in the enquiries we have received from across the globe. The team will continue to optimise the FTU and our technology in order to further improve the efficiency and commerciality of the Company’s DMG offering.

Excellent progress has also continued to be made on our patent applications / resolutions, with 12 applications now approved and a small number still pending. This is a testament to the excellent engineering work that has been done over the last few years and will continue to be key part of our strategy in the future.

I would also like to take this opportunity to thank Paul Emmitt who stood down as CEO at our recent AGM. He has left the Company in a strong position and we are very pleased to report that he has agreed to provide consultancy services to PHE, at the same time as we search for and then transition to a new CEO.  As a result of this, in September I assumed the interim role of Executive Chairman. I look forward to continuing to work closely with our highly experienced board to identify an appropriate new CEO as well as to continue to drive the Company forward and build on the momentum that Paul has created.

The second half of 2026 promises to be potentially the most exciting to date as our flagship projects advance closer to FID and our pipeline of projects progress through some key milestones.

I would like to take this opportunity to thank all our stakeholders for their continued support and look forward to providing further updates in due course.”

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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.

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

For more information see www.phegroup.com

Consolidated Statement of Comprehensive Income

The notes numbered 1 to 5 are an integral part of the half year financial information.

Statement of Consolidated Financial Position

The notes numbered 1 to 5 are an integral part of the half year financial information.

Consolidated Statement of Cash Flows

The notes numbered 1 to 5 are an integral part of the half year financial information.

Statement of Changes in Equity

The following describes the nature and purpose of each reserve within equity:

Deferred shares:  Represents the combined total of all deferred shares (0.5p, 4p and 4.5p).

Share premium: Amount subscribed for share capital in excess of nominal value.

Merger relief reserve: Amount subscribed for share capital in excess of nominal value where merger relief applies.

Accumulated deficit: Accumulated deficit represents the cumulative losses of the Company and all other net gains and losses and transactions with shareholders not recognised elsewhere.

The notes numbered 1 to 5 are an integral part of the half year financial information.

Notes (forming part of the half year Group financial information)

The following accounting policies have been applied consistently in dealing with items which are considered material in relation to the financial information.

This half year consolidated financial information is for the six months ended 30 June 2026 and has been prepared in accordance with International Accounting Standard 34 “Interim Financial Statements”. The accounting policies applied are consistent with International Financial Reporting Standards (“IFRS”) issued by the International Accounting Standards Board (IASB) as adopted for use in the United Kingdom and with those parts of the Companies Act 2006 applicable to companies reporting under IFRS (except as otherwise stated). The accounting policies and methods of computation used in the half year financial information are consistent with those of the previous financial year and corresponding half year reporting period.

The Group does not consider any new and amended standards that became applicable for the current reporting period to have any impact on the Groups results.

The unaudited results for period ended 30 June 2026 do not constitute statutory accounts within the meaning of Section 435 of the Companies Act 2006. The comparative figures for the period ended 31 December 2025 for the Company are extracted from the audited financial statements which contained an unqualified audit report and did not contain statements under Sections 498 to 502 of the Companies Act 2006.

This half year financial statement will be, in accordance with the AIM Rules for Companies, available shortly on the Company's website.

The Directors have considered all available information about future events when considering going concern. The Directors have prepared and reviewed cash flow forecasts for 12 months following the date of these Financial Statements. The projections show that the Group will have sufficient funding to be able to continue as a going concern on the basis of its cash balances as at 30 June 2026.

The half year financial statements do not include the adjustments that would result if the Group were unable to continue as a going concern.

This half year financial information is presented in £ sterling which is the Group’s functional currency.

Interests in subsidiaries, associates and jointly controlled entities are initially measured at cost and subsequently measured at cost less any accumulated impairment losses. The investments are assessed for impairment at each reporting date and any impairment losses or reversals of impairment losses are recognised immediately in the profit and loss account.

A subsidiary is an entity controlled by the company. Control is the power to govern the financial and operating policies of the entity so as to obtain benefits from its activities.

An associate is an entity, being neither a subsidiary nor a joint venture, in which the Company holds a long-term interest and where the company has significant influence. The Company considers that it has significant influence where it has the power to participate in the financial and operating decisions of the associate.

Entities in which the Company has a long-term interest and shares control under a contractual arrangement are classified as jointly controlled entities.

The Group provides engineering services for the application of the DMG technology, the intellectual property that the Group owns. Revenue from providing services is recognised in the accounting period in which services are rendered. For fixed-price contracts, revenue is recognised based on the actual service provided to the end of the reporting period as a proportion of the total services to be provided to the extent to which the customer receives the benefits. This is determined based on the actual labour hours spent relative to the total expected labour hours.

Where a contract includes multiple performance obligations as specified by the work scope, the transaction price will be allocated to each performance obligation based on the estimated expected cost-plus margin.

Estimates of revenues, costs, or extent of progress toward completion of services are revised if circumstances change. Any resulting increases or decreases in estimated revenues or costs are reflected in profit or loss in the period in which the circumstances that give rise to the revision become known by management.

In the case of fixed-price contracts, the customer pays the fixed amount based on a payment schedule. If the services rendered by the Group exceed the payment, a contract asset is recognised. If the payments exceed the services rendered, a contact liability is recognised.

If a contract includes an hourly fee, revenue is recognised in the amount to which the Group has a right to invoice.

The deferred shares have no voting rights and do not carry any entitlement to attend general meetings of the Company. They carry only a right to participate in any return of capital once an amount of £100 has been paid in respect of each ordinary share. The Company is authorised at any time to effect a transfer of the deferred shares without reference to the holders thereof and for no consideration.

On 14 May 2026, the 4,471,654,741 0.5p ordinary shares were sub-divided into 4,471,654,751 0.01p ordinary shares and 4,471,654,751 0.49p deferred shares.

On 18 May 2026 and 5 June 2026 a total of 325,000,000 0.01p Ordinary shares were issued at 0.2p at each date.

The expense recognised for share-based payments during the year is shown in the following table:

The were no liabilities recognised in relation to share based payment transactions.

On 29 June 2026, Paul Emmitt, Chief Executive Officer, confirmed that due to a change in family circumstances he would not stand for re-election at the Company's Annual General Meeting held on Thursday 3rd September 2026. Paul will continue to work with Engsolve on a technical consultancy basis. David Hitchcock our Non-Executive Chairman assumed an Executive Chair role at the conclusion of the AGM and will stay in place until a replacement CEO is identified.