REG - Invinity Energy Sys - Invinity Selected to Design GWh-Scale VFB System

Invinity Energy SystemsAnnouncement

Today 07:00

For best results when printing this announcement, please click on link below:
https://newsfile.refinitiv.com/getnewsfile/v1/story?guid=urn:newsml:reuters.com:20260521:nRSU2484Fa&default-theme=true

RNS Number : 2484F  Invinity Energy Systems PLC  21 May 2026

The information contained within this Announcement is deemed by Invinity
Energy Systems plc to constitute inside information as stipulated under the
Market Abuse Regulation (EU) No. 596/2014 as it forms part of UK law by virtue
of the European Union (Withdrawal) Act 2018 ("MAR").

 

 

21 May 2026

Invinity Energy Systems plc

 

("Invinity" or the "Company")

 

Invinity Selected to Design GWh-Scale VFB System

Strategic Partnership with FlexBase to Develop World's Largest Flow Battery

 

Invinity Energy Systems plc (AIM: IES), a leading global manufacturer of
utility-grade energy storage, is delighted to note FlexBase Group's
announcement
(https://flexbase.ch/en/newsroom/media-releases/invinity-energy-systems-has-emerged-as-the-strategic-partner-for-the-worlds-largest-flow-battery-storage-facility-in-laufenburg-switzerland)
that, following an in-depth competitive selection process that reviewed
proposals from flow battery manufacturers from across the world, it has
selected Invinity to design a GWh-scale vanadium flow battery ("VFB") for
deployment at the Technology Centre Laufenburg
(https://flexbase.ch/en/project-overview) .

 

Image: Representatives from FlexBase and Invinity at the project site in
Laufenburg, Switzerland. From left to right: Pascal Wyss (CIO, FlexBase),
Marcel Aumer (Group CEO & Founder, FlexBase), Jonathan Marren (CEO,
Invinity), Jean-Louis Cols (VP, Global Partner Development, Invinity), Ben
Williams (Project Manager, Invinity)

 

Situated in the Swiss municipality of Laufenburg, which is located on the
Switzerland-Germany border, the project will feature an AI datacentre and
technology campus, integrated with a VFB of up to 1.5 GWh capacity - believed
to be the world's largest to date. Invinity's battery solution, which FlexBase
will look to expand to 2.1 GWh in subsequent phases, will be used to support
the integration of renewable energy onto the site and provide stabilisation to
the grid.

 

Image: Construction progress at the Laufenburg site (left) and team members
from Invinity and FlexBase conducting a site inspection (right)

 

The project broke ground in May 2025 and is currently under construction.
Invinity will now proceed with the engineering phase of the project, which is
expected to take place during 2026 and into 2027 and will generate engineering
revenue for the Company, subject to the achievement of various development
milestones. Following the successful conclusion of the engineering design
phase, a purchase order for the battery system is anticipated to be received,
allowing Invinity to initiate phased manufacturing of datacentre-optimized VFB
modules for integration into the project.

 

Further announcements will be made in due course as the project progresses.

 

Marcel Aumer, Group CEO, Chairman of the Board and Founder of FlexBase Group
said:

 

"Invinity has proven to be the strongest partner by presenting the most
compelling overall package with the lowest life-cycle costs (LCOS). Invinity's
vanadium flow technology is perfectly suited for our project due to its safety
- particularly its non-flammability - its cycle stability, and its flexibility
in application."

 

Pascal Wyss, Chief Innovation Officer at FlexBase said:

 

"In Invinity, we have found a partner that not only possesses market-ready and
internationally proven technology but has also impressed us with innovative,
modular solutions perfectly tailored to FlexBase. We look forward to working
with the Invinity team to advance the vision of a sustainable energy future."

 

Jonathan Marren, Chief Executive Officer at Invinity said:

 

"Having just delivered the biggest vanadium flow battery in the UK, Invinity
now enters the engineering phase of what will be the world's largest vanadium
flow battery to date. Our longstanding focus on continually building our
expertise in flow battery technology has been recognized with the award of
this phase of the contract and I am extremely proud of the efforts of the
Invinity team in getting us to this position."

 

Stay up to date with news from Invinity. Join the distribution list for the
Company's monthly investor newsletter here
(https://invinity.us13.list-manage.com/subscribe?u=5b8cb168d806f615c67752bf8&id=26dd4280e1)
.

 

Enquiries:

 

 Invinity Energy Systems plc                                 +44 (0)20 4551 0361
 Jonathan Marren, Chief Executive Officer

 Joe Worthington, Senior Director, Corporate Affairs

 Canaccord Genuity (Nominated Adviser and Joint Broker)      +44 (0)20 7523 8000
 Henry Fitzgerald-O'Connor / Harry Pardoe / Charlie Hammond

 VSA Capital (Joint Broker)                                  +44 (0)20 3005 5000
 Andrew Monk / Andrew Raca

 

Notes to Editors

 

Invinity Energy Systems plc (AIM: IES) is a world-leading manufacturer of
vanadium flow batteries (VFB). Built in our factories in the UK and Canada,
the Company's proven energy storage technology has been deployed at scale and
dispatched gigawatt-hours of electricity for customers across the world to
date.

 

Invinity's safe, scalable and durable battery technology is a trusted and
safer alternative to lithium-ion batteries and our VFBs are engineered for
heavy-duty, high throughput applications. They don't wear out, cannot catch
fire and are designed to be operated for 30 years or more. Our products
address the challenges of our global energy system by delivering energy
storage without limits, unlocking low-cost, low-carbon power on-demand.

 

To find out more, visit invinity.com (https://invinity.com/?utm_source=rns) ,
sign up to our monthly Investor Newsletter here
(https://invinity.us13.list-manage.com/subscribe?u=5b8cb168d806f615c67752bf8&id=26dd4280e1)
or contact Investor Relations on via +44 (0)20 4551 0361 or ir@invinity.com
(mailto:ir@invinity.com) .

 

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact
rns@lseg.com (mailto:rns@lseg.com)
 or visit
www.rns.com (http://www.rns.com/)
.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our
Privacy Policy (https://www.lseg.com/privacy-and-cookie-policy)
.   END  MSCMZGZKKMRGVZG



            Copyright 2019 Regulatory News Service, all rights reserved