16 December 2025

Invinity Energy Systems plc

("Invinity" or the "Company")

First Phase of 20.7 MWh UK Project Delivered

Invinity Copwood VFB Energy Hub, formerly known as the LoDES Project, will be largest in Europe once operational

Further to the announcement of 19 November 2025, Invinity Energy Systems plc (AIM: IES) (OTCQX: IESVF), a leading global manufacturer of utility-grade energy storage, is pleased to confirm that construction of the 20.7 MWh Invinity Copwood VFB Energy Hub (formerly known as the LoDES project) is proceeding on schedule with the first phase of delivery now complete.

Above: Timelapse footage showing batteries departing Invinity's Motherwell facility and being installed at the Copwood VFB Energy Hub site in East Sussex

40 Invinity Vanadium Flow Batteries have now been delivered from the Company's Motherwell facility and installed at the site in East Sussex, UK, with shipping of the remaining batteries and the installation of the 3 MWp solar array planned for the New Year.

The project, expected to be the largest vanadium flow battery in Europe when operational, remains on schedule to be completed in Q1 2026 ahead of connection to the grid and commercial operation later in 2026. Further updates will be provided in due course.

Jonathan Marren, Chief Executive Officer at Invinity said:

"To have delivered phase 1 of this flagship project so quickly, safely and efficiently is an incredible achievement. I'm extremely proud of our team and thankful to the partners who have supported us so far in making this project a reality. The Invinity Copwood VFB Energy Hub has the potential to be a game-changing blueprint for long duration energy storage not only in Europe, but globally and we're incredibly excited to take this project live next year."

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Notes to Editors

Invinity Energy Systems plc (AIM: 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 up to 30 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 1 to hundreds 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 more than 190 MWh of systems deployed, contracted for delivery or awarded for projects across more than 90 sites in 17 countries, Invinity is active in all major global energy storage markets and has operations in the UK, Canada, USA and China. Invinity Energy Systems plc is quoted in the UK on AIM and trades in the USA on OTCQX.

To find out more, visit invinity.com, sign up to our monthly Investor Newsletter here or contact Investor Relations on via +44 (0)20 4551 0361 or [email protected].

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