Invinity Energy Systems (AIM:IES) has signed an engineering, procurement and construction (EPC) agreement with Equans Switzerland, advancing the vanadium flow battery (VFB) project it was selected to design in May.
The AIM-listed battery maker will supply the VFB system for FlexBase Group's Technology Centre Laufenburg (TZL) project in Switzerland, which combines an AI datacentre and technology campus with a 1.5 GWh storage system, expected to grow to 2.1 GWh in a later phase.
Equans will handle mechanical, electrical and piping works alongside other technical services supporting Invinity's battery deployment.
The two companies have worked together before, including on a vanadium flow battery project in Belgium announced in 2022, an experience that gave Equans direct insight into Invinity's technical delivery standards ahead of this larger award.
Engineering and detailed design work is already well advanced, with construction milestones achieved on schedule.
"The successful deployment of a project of this scale requires a delivery partner with exceptional technical capabilities, a strong safety culture and deep local expertise," said Jonathan Marren, chief executive of Invinity.
Equans Switzerland chief executive Claudio Picech said the partnership helps "establish a new benchmark for large-scale energy storage."
Invinity and Equans continue working with FlexBase and other stakeholders toward full project delivery.
News Intelligence what this means for the company
Invinity has secured Equans Switzerland as the EPC partner for the Technology Centre Laufenburg project—the world's largest vanadium flow battery installation at 1.5 GWh, expandable to 2.1 GWh. This formalizes the construction phase of a project Invinity was selected to design in May 2026, with engineering already well advanced and construction milestones on schedule. The appointment of an experienced partner with prior VFB project experience de-risks execution of what is Invinity's flagship deployment to date.
- Equans Switzerland becomes the delivery vehicle for Invinity's largest project; any construction delays or technical issues on TZL will directly impact Invinity's ability to demonstrate GWh-scale deployment capability and may affect future project wins.
- Successful completion of TZL—a 1.5–2.1 GWh system—would represent a material step-change in Invinity's installed base (currently over 10 GWh dispatched across its global fleet) and validate its technology at unprecedented scale.
The EPC agreement removes a key execution risk for Invinity's marquee project and signals progress toward revenue recognition on a multi-GWh contract. However, the announcement does not disclose contract value, timeline to first revenue, or financial terms, leaving the materiality of this win to the project's ultimate delivery and cash impact.
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In London, Panmure Liberum analyst Alexandro da Silva O'Hanlon reacted to the Invinity news by telling investors that Equans' selection underpins confidence in Invinity's technology quality and market leadership, whilst engineering and detailed design are said to be well advanced and key construction milestones have been met on schedule, with the project potentially expanding to 2.1 GWh in a later phase.
O'Hanlon added that securing a credible EPC partner materially de-risks execution and evidences encouraging progress that highlights the scale of opportunity for the company.
