RCS - Invinity Energy Sys - U.S. Energy Secretary Charges Invinity VFB at PNNL

Invinity Energy SystemsAnnouncement

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RNS Number : 1010L  Invinity Energy Systems PLC  11 December 2025

 

11 December 2025

Invinity Energy Systems plc

 

("Invinity" or the "Company")

 

U.S. Energy Secretary Charges Invinity VFB at PNNL

Pacific Northwest Laboratory (PNNL) begins testing of Invinity battery at Grid
Storage Launchpad (GSL) facility in Richland, Washington

 

Invinity Energy Systems plc (AIM: IES) (OTCQX: IESVF), a leading global
manufacturer of utility-grade energy storage, is pleased to announce that the
U.S. Department of Energy's Pacific Northwest National Laboratory has begun
testing of an Invinity battery at their new Grid Storage Launchpad.

 

Above: U.S. Energy Secretary Chris Wright starts the testing of the Invinity
VFB at GSL. Watch the video (courtesy of PNNL)
(https://invinity.com/us-energy-secretary-turns-on-invinity-vfb-at-pnnl/) .

 

This achievement represents a major milestone for the DOE's investment in
advanced energy storage, with U.S. Department of Energy Secretary Chris Wright
officially starting the test programme during a visit to GSL.

 

Over the next year, Invinity's vanadium flow battery system will be subjected
to an in-depth testing regime under real-world conditions by PNNL with the
intention of unlocking insights into how grid-scale batteries, such as
Invinity's, can help support the U.S. grid.

 

To find out more, read PNNL's press release in full here
(https://www.pnnl.gov/news-media/first-testing-grid-scale-battery-technology-begins-grid-storage-launchpad)
.

 

 

 

Vince Sprenkle, Director at Grid Storage Launchpad said:

 

"With this first utility-grade battery test, GSL is now fully operational as
the nation's proving ground for grid-scale storage technologies. With the
independent, accurate feedback developers receive from GSL's tests, they can
ready their technologies for real-world applications."

 

Matt Harper, President at Invinity said:

 

"We're very proud to be collaborating with PNNL and the GSL team on their
inaugural grid-scale battery testing project. Having our battery extensively
tested by PNNL's experts at this advanced facility, in support of the U.S.
DOE's long duration energy storage program, is yet another important
validation of our technology for deployment on the U.S. grid."

 

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

 

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 over 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 (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) .

 

 

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