Invinity Energy Systems (LSE:IES) delivered strong growth during 2025, reporting revenue, other income and project grant contributions of £17.8 million, representing a 256% increase compared with the previous year. The company also recorded a significant rise in commercial activity, with sales volumes exceeding 31.4 MWh and product shipments increasing by 241%.
While Invinity remained loss-making at the gross level, reporting a gross loss of £2.9 million, financial performance improved as losses narrowed. The company ended the period debt-free with cash reserves of £28.8 million, providing continued support for investment in manufacturing capacity and cost-reduction initiatives.
Endurium Platform Delivers Early Progress
A major focus during the year was the commercial rollout of the company’s Endurium battery platform. Invinity reported that targeted reductions in unit production costs were achieved ahead of schedule, highlighting progress in manufacturing efficiency and product economics.
The company also secured its first Endurium Enterprise order, marking an important commercial milestone as it seeks broader adoption of the technology across utility-scale and industrial energy storage applications.
International Partnerships and Project Pipeline Strengthen
Invinity continued to broaden its global footprint through new partnerships and market expansion initiatives, particularly in India and China. These relationships are intended to support future deployments in regions where demand for long-duration energy storage is expected to grow rapidly.
The company noted that its battery systems have now delivered a cumulative 9 GWh of energy worldwide. In addition, an increasing number of projects are attracting financing support from third-party lenders, a development management views as a positive indicator of growing market confidence in the technology.
Commercial Momentum Builds Across Key Markets
Recent contract wins and project developments further strengthened the company’s growth profile. Among the highlights was the design of a 1.5 GWh energy storage system in Switzerland, alongside new project deployments in the United States.
Management believes these achievements demonstrate increasing commercial traction and reinforce Invinity’s position within the rapidly expanding long-duration energy storage market, where demand is being driven by renewable energy integration and grid stability requirements.
Outlook Hinges on Execution and Financial Improvement
Despite strong operational progress, Invinity’s outlook remains influenced by ongoing financial challenges, including continued losses and negative cash flow. Valuation measures and technical indicators also remain relatively weak, reflecting the company’s current stage of development.
However, the group’s growing project pipeline, successful cost-reduction efforts and expanding international partnerships provide encouraging signs for future growth. Management’s ability to convert commercial opportunities into sustainable profitability will remain a key focus for investors.
More about Invinity Energy Systems
Invinity Energy Systems is an AIM-listed energy storage technology company specialising in vanadium flow batteries for utility-scale and long-duration applications. With manufacturing operations in the UK and Canada, the company develops Endurium battery systems designed to offer a durable and safe alternative to lithium-ion technology. Its solutions are deployed across Europe, North America and Asia, supporting grid operators, renewable energy projects and commercial customers seeking long-duration energy storage capabilities.
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