This announcement contains inside information

14 October 2021

Invinity Energy Systems plc

("Invinity" or the "Company")

Energy Superhub Oxford Flow Battery - First Phase Milestone Achieved

Invinity Energy Systems plc (AIM:IES), leading global manufacturer of vanadium flow batteries, is pleased to announce that the 1.7 MWh first phase of the Energy Superhub Oxford (ESO) project's flow battery, is now installed and energized.

Comprising nine Invinity VS3 flow batteries, this first battery cluster has enough capacity to serve the daily electricity needs of over 200 UK households. Energizing this cluster, the first of three that will ultimately deliver a total of over 5 MWh, marks an important milestone in the ongoing commissioning process of what will be the UK's largest flow battery.  

Invinity personnel are currently at site making final preparations for the delivery of the second cluster of VS3s, expected in the near term. Invinity is working with its project partners - developer Pivot Power, part of EDF Renewables, global technology company Wärtsilä, battery trading platform Habitat Energy and power electronics supplier Gamesa Electric - to commission the full system in preparation for service delivery to the UK grid.

Updates will be provided as further commissioning milestones are achieved.

Larry Zulch, Chief Executive Officer at Invinity said:

"Energizing phase one of our Energy Superhub Oxford installation is the first step toward demonstrating externally what we ourselves know to be true: Invinity is in a lead position toward providing a compelling alternative to lithium batteries for stationary storage. Persevering in the face of delays from global events, our team's dedication and focus on moving this vital project towards completion has been an inspiration."

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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 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