Invinity Energy Systems has proposed raising a minimum of £20 million through a share subscription and institutional placing, with the National Wealth Fund expected to provide a cornerstone investment of at least £10 million.
The vanadium flow battery developer provided further details on 20 October 2026 following an initial announcement about its proposed fundraise and capital access window the previous day.
The equity proposal includes a subscription for new ordinary shares, an institutional placing and a separate retail offer. The company set an issue price of 10p per new share, with the total amount dependent on demand and the conditions governing the transaction.
The National Wealth Fund was already a significant shareholder, holding approximately 19% of Invinity before the proposed transaction. Its expected participation is intended to underpin the offer, but the company’s language should not be read as confirmation that every proposed subscription has completed.
Invinity develops vanadium flow batteries, an energy storage technology using liquid electrolyte solutions to store and release electricity through reversible electrochemical reactions.
The batteries are designed for applications in which electricity needs to be stored over several hours or longer. Their commercial deployment depends on system efficiency, installation cost, the availability of materials and the requirements of the electricity network or individual customer.
The company has indicated that about £10 million of the minimum gross proceeds would support product development and cost reduction. Approximately £8 million would provide working capital, with a further £2 million allocated to manufacturing capacity in the UK and United States.
These allocations describe intended uses of funds, not spending already completed. The amount available for investment would also depend on transaction costs and the final funding proceeds.
The fundraising forms part of efforts to develop manufacturing and commercial capacity while improving product economics. A battery manufacturer can face substantial working-capital requirements because production and delivery schedules do not always coincide with the timing of customer payments.
Invinity has also announced a planned chairmanship change, with Volker Beckers selected to succeed Neil O’Brien following completion of the proposed fundraising. That timing should not be treated as an immediate effective appointment.
Equity funding can provide capital without creating a new contractual debt repayment obligation, although it dilutes existing shareholders according to the shares issued. The precise ownership effect will depend on the completed subscription and placing.
The National Wealth Fund’s expected cornerstone subscription is significant because it provides a prospective institutional participant, but the planned £10 million should not be added to the £20 million target as though it were a separate funding round. It forms part of the proposed financing.
Invinity’s retail offer is also distinct from the placing and subscription. The company may allocate different classes of investors to different offer arrangements, but all remain dependent on the respective documents and completion mechanics.
The use-of-proceeds figures total the stated minimum gross proceeds. Actual expenditure budgets may be adjusted if more money is raised or costs differ, so the amounts should be described as intended allocations rather than binding spending commitments.
Large energy storage systems are sold into projects with their own procurement and construction timetables. Working capital can be needed before final customer receipts, especially where equipment must be manufactured ahead of delivery and commissioning.
The company’s September interim results and October fundraising disclosures represent different reporting events. The new October financing proposal is the current development, while the earlier financial information helps explain why the company is seeking product-development and working-capital funds.
The proposal could involve both current institutional investors and new participants, but the existence of indications of interest is not proof of proceeds received. Shareholders will need the result of the offer to establish the final gross amount and dilution.
Invinity has not announced that the entire transaction is complete or that its prospective financing removes all future commercial execution risk. The next confirmed steps concern completion of the fundraising and deployment of capital against the proposed development and manufacturing programme.
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