15 December 2025

OPG Power Ventures plc

("OPG", "the Group" or "the Company")

Result of Share Buyback Offer and Cancellation

OPG (AIM: OPG), the developer and operator of power generation assets in India, announces the result of the Share Buyback Offer, details of which were set out in the circular published by the Company on 6 November 2025 (the "Circular") and in the subsequent announcement published by the Company on 1 December 2025 (RNS Number: 6371J).

Further to the announcement made on 1 December 2025, the maximum aggregate number of Ordinary Shares that can be purchased pursuant to the Share Buyback Offer is 157.7 million Ordinary Shares (representing 39.4 per cent. of the Existing Ordinary Shares). The Share Buyback Offer Price is 6.27 pence per Ordinary Share.

153,769,385 Ordinary Shares (representing 38.37 per cent. of the Company's issued share capital and 97.51 per cent. of the maximum aggregate number of Ordinary Shares that can be purchased pursuant to the Share Buyback Offer) were validly tendered by Qualifying Shareholders under the Share Buyback Offer. Shareholders who validly tendered Ordinary Shares equal will have their tender accepted in full. 153,769,385 Ordinary Shares will therefore be purchased under the Share Buyback Offer and subsequently cancelled. The total value which will be returned to Shareholders pursuant to the Share Buyback Offer will be approximately £9.64 million.

The Company announces that it has been notified that Jeremy Warner Allen, Non-executive Deputy Chairman, in respect of 1,124,681 Ordinary Shares, and Patrick Michael Grasby, Non-executive Director, in respect of 11,604 Ordinary Shares, accepted the Share Buyback Offer in respect of their shareholdings. Following these transactions, Jeremy Warner Allen and Patrick Michael Grasby do not hold any Ordinary Shares in the Company.

Payment of the consideration due to Shareholders whose tenders under the Share Buyback Offer have been accepted is expected to be despatched (by cheque to certificated Shareholders and via CREST to uncertificated Shareholders) along with balance certificates (if any) in respect of non-tendered shares on 23 December 2025.

Following the implementation of the Share Buyback Offer and the cancellation of the tendered Ordinary Shares, the Company will have 246,964,126 Ordinary Shares in issue with no Ordinary Shares held in treasury. Therefore, the total number of voting rights in the Company will be 246,964,126 which may be used by Shareholders as the denominator in the calculations by which they may determine if they are required to notify their interest, or a change to their interest, in the Company under the FCA's Disclosure, Guidance and Transparency Rules. The Family Concert Party remains beneficially interested in 206,507,166 Ordinary Shares representing 83.62 per cent. of the revised issued share capital of the Company.

Cancellation

As previously announced, following the approval of the proposed Cancellation by Shareholders at the Annual General Meeting held on 3 December 2025, the last day of dealings in the Ordinary Shares on AIM will be 23 December 2025 and the Cancellation of the admission to trading on AIM of the Ordinary Shares will become effective at 7.00 a.m. on 24 December 2025.

Unless otherwise defined, capitalised terms in this announcement shall have the meaning set out in the Circular.

Further details are set out below in accordance with the UK Market Abuse Regulation.

For further information, please visit www.opgpower.com or contact:

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM