Shares in Invinity Energy Systems PLC (AIM:IES, OTCQX:IESVF, AQSE:IES) rose 4% to 19.18p after the group announced the first commercial order for its Endurium Enterprise battery system, marking an early milestone for the product launched this year.
The AIM-listed energy storage specialist said it will supply a 3.5 megawatt-hour Endurium Enterprise system to Charles Murgat, where it will be installed alongside an existing on-site solar photovoltaic array in France.
The system is designed to allow the customer to use more of its own solar power, manage peak electricity demand and improve energy resilience.
Invinity said its vanadium flow batteries were selected for their safety and durability, with the installation expected to cut energy costs and lower the site’s carbon footprint. The project is aimed at commercial and industrial users that want reliable, low-carbon power without relying on subsidies.
Delivery of the batteries is expected in the second half of 2026, subject to planning approvals.
Chief executive Jonathan Marren said the sale showed that Invinity’s efforts to cut product costs during 2025 were starting to pay off, adding that the deal provided “an excellent reference case” for future customers.