Invinity Energy Systems Inks 20 MWh EU Sales, Eyes Strong 2026

Invinity Energy Systems (LON: IES), a leader in utility-grade long-duration energy storage, announced significant sales agreements and a positive trading update, pointing towards a promising 2026.

The company secured 20 MWh in new EU sales and highlighted substantial progress across commercial, operational, product range, and product cost areas over the past year.

The highlight is the agreement to supply 20 MWh of Endurium vanadium flow battery (VFB) systems to Ideona, a Hungarian energy firm, for solar-plus-storage projects. These sales represent a major advancement for Invinity in the Central European market, underscoring the growing adoption of long-duration energy storage solutions.

Invinity anticipates recording approximately £17 million in revenue and project grant income for 2025. This reflects successful product shipments to STS, Ideona, and HITT, along with grant funding for the Invinity Copwood VFB Energy Hub. This figure excludes potential license fee income from UESNT, though the company aims to progress that project into 2026.

The company's 2026 order book stands at £17 million in signed contracts/sales agreements. Approximately £8 million is committed, while £9 million is signed but uncommitted, pending customer Notice to Proceed (NTP). This matches the expected revenue for all of 2025, providing considerable confidence in future performance.

Operationally, Invinity successfully completed deliveries to major projects expected within 2025, including HITT, STS, and Ideona. The Invinity Copwood VFB Energy Hub is progressing well and is slated to be fully operational in the first half of 2026, generating recurring revenue through a partnership with Enel X.

Driver Breakdown:

• Cost Reduction: Invinity's product cost reduction activities are progressing ahead of targets, enhancing product margins.
• Product Expansion: The launch of Endurium Enterprise in September 2025 targets the Commercial & Industrial market, broadening Invinity's customer base.
• Manufacturing Flexibility: Increased stack manufacturing capacity in Scotland through a semi-automated line, which can be replicated globally, and balance of system manufacturing moved to Baojia in China.

The company is also pursuing opportunities within the UK Long Duration Energy Storage (LDES) Cap & Floor programme, bidding for 21 projects potentially deploying up to 16.7 GWh of Invinity's VFBs. While the outcome of the Ofgem process remains uncertain, success could significantly boost Invinity's future trading.

CEO Jonathan Marren noted that 2025 was a year of meaningful progress, and that the momentum demonstrated by multiple sales announced in recent weeks, repeat orders from established partners such as Ideona, and the build-up of a £17m 2026 order book gives the Board growing confidence in the Company's outlook.