29 April 2022

Invinity Energy Systems plc

("Invinity" or the "Company")

Exercise of Warrants

Invinity Energy Systems plc (AIM:IES), a leading global manufacturer of utility-grade energy storage, has on 28 April 2022 issued 953 new ordinary shares (the "New Ordinary Shares") in relation to the exercise of 494 Short-Term Warrants and 459 Long-Term Warrants which were issued in the placing and open offer in December 2021. The Short-Term Warrants have an exercise price of £1.50 and the Long-Term Warrants have an exercise price of £2.25.

Applications have been made for the New Ordinary Shares to be admitted to trading on AIM and to the Aquis Stock Exchange and dealings are expected to commence on 5 May 2022.

Following the issue of the New Ordinary Shares, the issued share capital of the Company comprises 116,049,661 ordinary shares with one voting right per share. The Company does not hold any shares in treasury. Therefore, this figure of 116,049,661 ordinary shares 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 in their interest in, the share capital of Invinity under the FCA's Disclosure Guidance and Transparency Rules.

Following this warrant exercise, the Company has 14,464,536 Short-Term Warrants and 14,464,571 Long-Term Warrants outstanding, both of which are admitted to trading on the Aquis Stock Exchange.

Enquiries:

Notes to Editors

Invinity Energy Systems plc (AIM:IES) manufactures flow batteries for large-scale, high-throughput energy storage requirements of business, industry and electrical networks.

Invinity's factory-built flow batteries run continually with no degradation for over 25 years, making them suitable for the most demanding applications in renewable energy production. Energy storage systems based on Invinity's batteries are safe, reliable, and economical, and range in size from less than 250 kilowatt-hours to tens of megawatt-hours.

Invinity was created in April 2020 through the merger of two flow battery industry leaders: redT energy plc and Avalon Battery Corporation. With over 25 MWh of systems deployed to date across more than 40 sites in 15 countries, Invinity is active in all major global energy storage markets and has operations in the UK, Canada, USA, China, Australia and South Africa. Invinity Energy Systems plc is listed on the London Stock Exchange.

To find out more, visit invinity.com or call Investor Relations on +44 (0)204 551 0361