Invinity Energy Regulatory News (IES)

6 April 2023

Invinity Energy Systems plc

("Invinity" or the "Company")

Project Delivery Update

Significant progress made on key project deliveries during Q1 2023

Further to the project delivery update provided on 30 December 2022, Invinity Energy Systems plc (AIM: IES) (AQSE: IES) (OTCQX: IESVF), a leading global manufacturer of utility-grade energy storage, is pleased to confirm the successful delivery of more than 11.4 MWh of Invinity batteries so far in 2023. Key project updates are below:

8.4 MWh Solar + Storage Project, Alberta, Canada

Invinity confirms that all 38 Invinity VS3 batteries have now been delivered to Elemental Energy's Chappice Lake Solar + Storage project site in Alberta, Canada. Final installation of the 8.4 MWh battery system is now well under way, to be followed shortly by energising, commissioning and commercial operation.

Picture: Final Invinity VS3 battery being sited at the Chappice Lake Solar + Storage project in Alberta, Canada

8 MWh Solar + Storage Project, South Australia, Australia

Further to the update provided in the 30 December 2022 announcement, 14 Invinity VS3 batteries have cleared customs and have now been delivered to a customer-designated holding facility near the project site in South Australia. The remaining 27 batteries have been shipped from Invinity's facility and are currently in transit to Australia. Installation work is ongoing, with the balance of the total 8 MWh system expected to be installed and energized within Q3 2023.

Picture: Invinity VS3 batteries at a holding facility in South Australia

10 MWh Solar + Storage Project, California, U.S.

Invinity has also commenced manufacturing of the 10 MWh of VS3 batteries that will be used at the Viejas Microgrid project in Southern California, in partnership with Indian Energy and funded in part by the California Energy Commission. Eight Invinity batteries are currently in transit to the Company's newly expanded facility in Vancouver, Canada where they will undergo final assembly and testing before being shipped to the project site. The remaining batteries are expected to be delivered over the coming months, in line with customer timelines and aligned with construction works at site. The Company and its partners continue to expect the battery system to be commissioned during mid-2023.

Picture: VS3 Batteries ready for shipping from Invinity's facility in China

Larry Zulch, Chief Executive Officer at Invinity said:

"I'm proud that our team has been able to deliver over 11 MWh of products in recent months. This marks a significant shift for Invinity from a development company to one that is able to commercially supply our class-leading products into larger and larger projects. The capability to close and fulfil orders at scale is vital to meeting the growing demand for our products and achieving our corporate goals."

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 65 MWh of systems already deployed or contracted for delivery across over 70 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 in the UK on AIM and AQSE and trades in the USA on OTCQX.

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

About Reach announcements

This is a Reach announcement. Reach is an investor communication service aimed at assisting listed and unlisted (including AIM quoted) companies to distribute media only / non-regulatory news releases into the public domain. Information required to be notified under the AIM Rules for Companies, Market Abuse Regulation or other regulation would be disseminated as an RNS regulatory announcement and not on Reach.