TaiSan raises £4.65m to commercialise sodium‑ion batteries
- TaiSan closed a £4.65 million seed round co‑led by Eos Advisory and the Midlands Engine Investment Fund II via Mercia Ventures.
- The company uses a proprietary quasi‑solid/solid‑state electrolyte compatible with high‑voltage, high‑capacity electrodes to make sodium‑ion cells lighter and more compact.
- Early commercial traction is focused on e‑bikes, scooters and light electric vehicles, with several memoranda of understanding signed and pilot programmes being prepared.
- Funding will support pilot testing, integrated battery pack demonstrations and expanded precursor manufacturing; InnoEnergy renewed its investment and several new investors joined the round.
Funding round
TaiSan has secured a £4.65 million seed round co‑led by Eos Advisory and the Midlands Engine Investment Fund II through Mercia Ventures. InnoEnergy renewed its investment and was joined by existing backers TSP Ventures, Exergon and Heartfelt, plus new investors including AFI Ventures, EverQuest Capital Partners, Adeline Arts & Science, Techmind and François Badelon.
Technology
The company is developing a proprietary solid‑state/quasi‑solid electrolyte compatible with high‑voltage and high‑capacity electrode materials. That approach is intended to overcome sodium‑ion’s historical weight and energy‑density disadvantages, enabling lighter, more compact batteries while retaining the chemistry’s intrinsic safety and resource advantages.
Commercial validation
TaiSan is pursuing early commercial traction in e‑bikes, scooters and light electric vehicles, and has signed several memoranda of understanding with OEMs and suppliers. The new funding will support pilot testing with OEM partners, integrated battery pack demonstrations and expanded precursor manufacturing in collaboration with chemical producers.
Investor support and strategic context
InnoEnergy, which first invested in 2024, continues to support TaiSan through strategic introductions, technical validation and access to its industrial and investor ecosystem. Company leadership frames the round as a step from technology development toward industrial validation, with the goal of expanding sodium‑ion use beyond stationary storage into mass‑market applications where safety, cost and resource resilience matter.
Source: InnoEnergy
