Invinity Energy Systems has seen its share price increase by 8% after announcing its year-end trading update.

The AIM listed energy firm expects to report £17m in revenue and project grant income for 2025. It also stated that it has recorded "substantial progress" across all key areas of the business, including commercial, operations, product range and product cost.

Invinity is also expecting to report a £17m order book for 2026, comprising £8m in signed committed contracts and £9m of signed uncommitted agreements.

The latest update follows sales by the firm in late December to Pacific Northwest National Labs and Charles Murgat, the latter being a first for the company.

Chief executive officer at Invinity, Jonathan Marren, said that 2025 was a year of "meaningful progress" for the firm, with its 2026 order book forecast bringing confidence to its outlook.

He added: "We entered the year having just launched Endurium and with a clear focus on reducing product costs while expanding our addressable market, and I am pleased with the substantial advances we have made commercially, operationally and in product competitiveness.

“With a scalable manufacturing footprint, an expanded product range and a strong pipeline across utility-scale and behind-the-meter markets, we believe Invinity is well positioned to drive further growth and strengthen its position as a global leader in long-duration energy storage.”

Alongside these announcements, Invinity has signed two new agreements to supply 20 MWh of vanadium flow battery systems to its Hungarian commercial partner, Ideona, for use in two solar-plus-storage projects in Hungary.

The deals represent the firm’s fourth and fifth sales in the Hungarian market and are repeat orders with Ideona.

Marren concluded: "These follow-on agreements with Ideona are a strong endorsement of both our technology and our execution. Signing repeat agreements which will represent our largest combined sales to date with a trusted European partner reflects the growing role that long-duration energy storage is playing in solar-plus-storage projects across Central Europe.

"We look forward to supporting Ideona as these projects progress to financial close and into delivery during 2026, and to further expanding our partnership as the market for grid-scale long duration energy storage continues to develop."

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