Result of Placing

THIS ANNOUNCEMENT DOES NOT CONSTITUTE AN OFFER FOR SALE OR SUBSCRIPTION OF ANY SECURITIES IN INVINITY ENERGY SYSTEMS PLC.

Invinity Energy Systems plc

("Invinity" or the "Company")

Result of Placing

Further to the announcement at 7.00 a.m. on Tuesday 20 October 2026 (the “Launch Announcement”), Invinity Energy Systems plc (AIM: IES), a global leader in vanadium flow battery technology, is pleased to announce the results of the Placing.

The Company has conditionally raised gross proceeds of £10 million through an oversubscribed Placing of 100,000,000 new Ordinary Shares at the Issue Price of 10 pence per new Ordinary Share.

Canaccord Genuity, Panmure Liberum and VSA Capital acted as Joint Bookrunners in respect of the Placing.

As set out in the Launch Announcement, in addition to the £10 million cornerstone investment from the National Wealth Fund Limited ("NWF"), NWF has conditionally agreed to match the funds raised through the Retail Offer, on a pound-for-pound basis, subject to the aggregate size of the Fundraising not exceeding £25 million, increasing the maximum size of the Subscription to £12.5 million. The final size of the Subscription will be announced alongside the result of the Retail Offer at 7.00 a.m. on 22 October 2026.

The Fundraising is conditional upon, inter alia, shareholders approving the Resolutions at the General Meeting that will grant to the Directors the authority to allot the Fundraising Shares for cash on a non-pre-emptive basis. Admission of the Fundraising Shares is expected to occur at 8.00 a.m. on 12 November 2026 or such later time and/or date as the Company, Canaccord Genuity, Panmure Liberum and VSA Capital may agree (being in any event no later than 27 November 2026).