Retail Offer by RetailBook

THIS ANNOUNCEMENT AMOUNTS TO A FINANCIAL PROMOTION FOR THE PURPOSES OF SECTION 21 OF THE FINANCIAL SERVICES AND MARKETS ACT 2000 AND HAS BEEN APPROVED BY RETAIL BOOK LIMITED WHICH IS AUTHORISED AND REGULATED BY THE FINANCIAL CONDUCT AUTHORITY (FRN 994238). THIS FINANCIAL PROMOTION IS NOT INTENDED TO BE INVESTMENT ADVICE.

Ceres Power Holdings plc

("Ceres" or the "Company")

Retail Offer by RetailBook

• Ceres announces a conditional Retail Offer of new Ordinary Shares via RetailBook
• The issue price for the new Ordinary Shares will be determined at the close of a bookbuilding process
• The Retail Offer is available to both existing shareholders and new investors
• There is a minimum subscription of £250 per investor in the Retail Offer
• No commission will be charged by RetailBook on applications to the Retail Offer
• More information on RetailBook's partner network and how investors can participate in the Retail Offer can be found here: https://app.retailbook.com/offers/ceres-power

The Retail Offer

Ceres (CWR.L), a leading developer of clean energy technology, is pleased to announce a conditional retail offer of new ordinary shares of 10 pence each in the capital of the Company ("Ordinary Shares") via RetailBook (the "Retail Offer" and the "Retail Offer Shares").

As separately announced today, the Company is also conducting a non-pre-emptive placing of new Ordinary Shares to institutional investors by way of an accelerated bookbuilding process (the "Placing"). In addition to the Placing and the Retail Offer, certain directors of the Company have agreed to subscribe for new Ordinary Shares (the "Subscription" and, together with the Placing and the Retail Offer, the "Capital Raise"). For the avoidance of doubt, the Retail Offer is not part of the Placing or Subscription.

The issue price of the new Ordinary Shares to be issued pursuant to the Capital Raise will be determined following the close of the bookbuilding process.

The Retail Offer is conditional on the new Ordinary Shares to be issued pursuant to the Capital Raise being admitted to listing in the equity shares (commercial companies) category of the Official List of the Financial Conduct Authority and to trading on the main market for listed securities of London Stock Exchange plc (together, "Admission"). Admission is expected to take place at 8:00 a.m. on 12 June 2026.

The Retail Offer will not be completed without the Placing also being completed.

The Company is looking to position themselves to take advantage of the momentum in Solid Oxide Fuel Cell technology. The Company will use the net proceeds of the Capital Raise to establish the appropriate balance sheet to drive growth and enable selective investment to support partner scale-up

Reason for the Retail Offer

Investors can participate through RetailBook's partner network of investment platforms, retail brokers and wealth managers, subject to such partners' participation. More information on RetailBook's partner network can be found here: https://app.retailbook.com/offers/ceres-power.

Eligibility for the Retail Offer

Some partners may only accept applications from existing shareholders and/or existing customers.