Invinity Energy Systems' vanadium flow battery (VRFB) order book now spans three continents, from a solar-integrated site in southern England to steel manufacturing in California and cooperative-owned capacity across the US Midwest.

UK: Copwood Energy Hub

Invinity delivered a 20.7 MWh vanadium flow battery system for the Copwood Energy Hub in East Sussex, United Kingdom, in May 2026. The facility integrates battery storage with a 3 MWp solar installation, with grid connection and commercial operations planned for later in 2026.

United States: steel and cooperatives

Invinity secured an order for a 32 MWh flow battery system at Pacific Steel Group's Mojave Micro Mill in California. The battery will operate alongside a 40 MWp solar installation to support renewable electricity supply for steel manufacturing — a heavy-industrial load profile where long-duration storage adds value beyond daily arbitrage.

Separately, Dairyland Power Cooperative ordered 43 MWh of vanadium flow batteries from Invinity for deployment across multiple locations in the Midwest, with deliveries expected to begin in 2027.

Switzerland: up to 1.5 GWh for an AI campus

Invinity was selected to design a flow battery system of up to 1.5 GWh for the Technology Centre Laufenburg in Switzerland, integrating energy storage with an AI data centre and technology campus. The project remains in development.

The cost benchmark

BloombergNEF's 2026 analysis sets a levelised cost of storage (LCOS) benchmark of $214/MWh for vanadium flow batteries, applied to daily cycling and renewable integration. The modelling uses 2024 cost assumptions, assumes 365 annual cycles and limits counted discharge to 12 hours for longer-duration systems.

Novel long-duration storage capacity of roughly 2 GW and 9 GWh was installed globally in 2025, bringing cumulative deployment to 5 GW and 25 GWh — with announced pipelines substantially exceeding commissioned capacity, according to BloombergNEF's 2026 Sustainable Energy in America Factbook.

A broadening vendor field

Invinity and Rongke Power are not alone: other vendors developing flow battery technology include Sumitomo Electric, CellCube, VRB Energy, H2 Inc. and StorEn Technologies. For project developers, that means more supply options — and more need to compare cycle-life, electrolyte ownership structures and warranty terms rather than headline MWh pricing alone.

This article was assisted by AI analysis. Please refer to the original source for official information.