NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, INTO OR WITHIN ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION. ANY FAILURE TO COMPLY WITH THESE RESTRICTIONS MAY CONSTITUTE A VIOLATION OF APPLICABLE SECURITIES LAWS.

FOR IMMEDIATE RELEASE.

28 June 2023

New Energy One Acquisition Corporation Plc

("NEOA" or the "Company")

Total voting rights announcement

The following notification is made in accordance with Rule 5.6 of the FCA's Disclosure Guidance and Transparency Rules.

Following the Company's announcement on 14 June 2023, the Ordinary Shares for which redemption elections were made in connection with the Business Combination Extension have now been redeemed. As at close of business on 28 June 2023, the voting share capital of the Company consists of a total of: (i) 1,845,614 Ordinary Shares, of which 218 Ordinary Shares are held by Public Shareholders and 1,845,396 Ordinary Shares are held by the Sponsor Entities; and (ii) 4,375,000 Sponsor Shares which are held by the Sponsor Entities. The Company holds no Ordinary Shares or Sponsor Shares in treasury.

Therefore, the total number of voting rights in NEOA on 28 June 2023 is 6,220,614. The figure of 6,220,614 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, NEOA under the FCA's Disclosure Guidance and Transparency Rules.

Capitalised terms used but not defined in this announcement have the meanings given to them in the Company's announcement on 14 June 2023.