This announcement contains inside information

19 October 2021

Invinity Energy Systems plc

("Invinity" or the "Company")

0.8 MWh storage system delivered to Scottish Water

Battery and solar project in support of public infrastructure decarbonisation

Invinity Energy Systems plc (AIM:IES), leading global manufacturer of utility-grade energy storage, is pleased to announce that four VS3 vanadium flow batteries with a total capacity of more than 0.8 MWh have been delivered to an energy project at a waste-water treatment plant owned by Scottish Water in Perthshire, Scotland.

Assembled at the Company's facility in nearby Bathgate, the vanadium flow battery will be coupled with solar PV generation to reduce energy costs at Scottish Water's Perth Waste Water Treatment Works. This project will help Scottish Water progress toward Net Zero carbon emissions targets by decreasing the facility's carbon emissions by approximately 160 tonnes of CO₂ per annum, equivalent to offsetting 580,000 miles driven by an average passenger car.

This project will also provide ancillary services to the UK grid and support EV charging at the site while maintaining Scottish Water's high standard of operational performance in service to their customers across the region.

With delivery now complete, Invinity personnel have commenced work alongside principal contractor Absolute Solar and Wind to energise and commission the system ahead of project go-live, expected by the end of 2021.

Updates will be provided as further commissioning milestones are achieved.

Larry Zulch, Chief Executive Officer at Invinity said:

"We applaud Scottish Water's determination to reduce carbon emissions through solar coupled with utility-grade energy storage. Our team in Bathgate is rightfully proud that their work, in partnership with Absolute Solar and Wind, supports Scotland's publicly owned water utility serving millions of customers."

Enquiries:

Notes to Editors

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

Invinity's factory-built vanadium 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, ranging 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 10 MWh of systems deployed to date across 40 sites in 14 countries, Invinity is active in all major global energy storage markets and has operations in the UK, Canada, USA, China 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