12 August 2022

Invinity Energy Systems plc

("Invinity" or the "Company")

Notice of AGM & General Meeting of Short-Term Warrantholders

Invinity Energy Systems plc (AIM: IES) (AQSE: IES) (OTCQX: IESVF), a leading global manufacturer of utility-grade energy storage, announces that the Company's Annual General Meeting ("AGM") will be held at the offices of Osborne Clarke LLP, One London Wall, London, EC2Y 5EB on Wednesday 31 August 2022 at 11.00 a.m.. In addition to the formal business of the AGM, management will give a presentation and answer questions from shareholders, which can be submitted in advance by emailing ir@invinity.com. 

Immediately following the AGM, the Company will hold a meeting of the holders of Short-Term Warrants ("Short-Term Warrantholders") (the "Warrant Meeting" and, together with the AGM, the "Meetings"), at which a resolution will be tabled to extend the period during which the Short-Term Warrants may be exercised to 15 September 2023.

Following the Meetings, the Company intends to post the management presentation, and a recording of the formal business of the Meetings on the Investor section of Invinity's website https://invinity.com/investors/presentations-webinars/.

Voting

Shareholders and Short-Term Warrantholders are strongly encouraged to appoint the Chairman of the Meetings as their proxy so that their vote will be counted if ultimately they (or any other proxy they might otherwise appoint) are not able to attend. Note that submitting a proxy will not preclude shareholders and Short-Term Warrantholders from attending and voting at the Meetings in person if they wish to do so.

Completed forms of proxy must be scanned and emailed to #UKCSBRS.ExternalProxyQueries@computershare.co.uk or submitted via post. Completed proxies must be received by the registrar no later than 11.00 a.m. on 26 August 2022 in respect of the AGM and 11.30 a.m. on 26 August 2022 in respect of the Warrant Meeting.

For assistance in submitting forms of proxy please email ir@invinity.com.

Posting of Notices of Meetings

The Notices convening the Meetings, along with proxy form(s) for the purpose of voting, will be posted today to shareholders and Short-Term Warrantholders as appropriate and will shortly be available from the shareholder documents section of the Company's investor portal https://invinity.com/investors/shareholder-documents/.

Attending the Meetings

Due to capacity constraints, shareholders and Short-Term Warrantholders wishing to attend the Meetings are requested to RSVP via ir@invinity.com no later than 5 p.m. on Monday 29 August 2022.

Enquiries:

Notes to Editors

Invinity Energy Systems plc (AIM:IES) (AQSE: IES) (OTCQX: IESVF) manufactures vanadium 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 33 MWh of systems deployed to date across more than 50 sites in 15 countries, Invinity is active in all major global energy storage markets and has operations in the UK, Canada, USA, China and Australia. Invinity Energy Systems plc is listed on the AIM Market of the London Stock Exchange and on the Aquis Stock Exchange (AQSE). The Company also trades in the USA on OTCQX Best Market under the symbol "IESVF".

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