12 MWh Sale for U.S. Project

Invinity Energy Systems plc (AIM: IES) (OTCQX: IESVF), a leading global manufacturer of utility-grade energy storage, is pleased to announce the sale of a 12 MWh Endurium battery system to Pacific Northwest National Laboratory ("PNNL").

The batteries will be installed at PNNL's Richland, Washington campus and used to demonstrate the ability of advanced energy storage in general, and Invinity's vanadium flow batteries ("VFBs") in particular, to deliver the durable, flexible services needed for a future low-cost, high-reliability electrical grid. In proving their ability to provide 24-hour energy discharge, improve operational resilience and decrease peak site energy demand, Invinity's VFBs are expected to further deliver significant benefits to PNNL.

This sale follows the recent inauguration visit by U.S. Energy Secretary Chris Wright to PNNL's Grid Storage Launchpad, where he initiated the testing of an Invinity battery. This comes at a time when energy storage continues to gain prominence within the U.S. power market as grid operators begin to prioritise storage duration over short-term capacity. For example, PJM, the largest grid operator in the U.S., is elevating the priority of eight- and ten-hour duration systems as it looks to support new resources that can balance load and deliver energy when its system is potentially at risk.

As previously announced by the Company in September 2023, this project is supported by funds from the U.S. Department of Energy which were made available to a number of U.S. projects which plan to feature Invinity's technology. Delivery of the Invinity batteries is expected in H2 2026.

Matt Harper, President at Invinity said:

"From its very beginnings, PNNL has been one of the most innovative laboratories in energy, pioneering the technologies and solutions that form the backbone of today's electric grid in every corner of the globe.

"Invinity is thrilled to be providing one of the main components of PNNL's most recent facility, the Grid Storage Launchpad, to prove how our safe, durable, long duration vanadium flow batteries can help enhance the future electric grid. The inherent characteristics of our proven technology, including its ability to deliver both instantaneous demand response and extended discharge durations over decades of service, makes it the ideal solution for maximising this potential.

"With the support and engagement of the Department of Energy, we look forward to working with PNNL's researchers to guide the technology, policy and regulation that will enhance the role that Invinity's vanadium flow batteries can play on our future electric grid, in the U.S. and beyond."