TaiSan Raises £4.65M to Bring Sodium-Ion Batteries to the Mass Market

TaiSan, building next-gen sodium batteries for micromobility, led by Sanzhar Taizhan and the team, has raised £4.65M co-led by Eos Advisory, and the Midlands Engine Investment Fund II through fund manager Mercia Ventures, with participation from AFI Ventures, EverQuest Capital Partners, Adeline Arts & Science, Techmind, angel François Badelon, and existing investors InnoEnergy, TSP Ventures, Exergon, and Heartfelt. Of the total raised, £700,000 came from Innovate UK, which provided grant funding through its Investor Partnerships Programme to match fund part of the private investment.

The funding will help TaiSan advance its solid-state sodium battery technology and launch pilot projects with leading manufacturers, building on strong early customer interest.

TaiSan is developing lighter, more compact solid-state sodium batteries that overcome the size and weight limitations of conventional sodium-ion designs. Using a proprietary solid-state electrolyte, the batteries are designed to offer improved safety, long service life, and a sustainable alternative to lithium-based technologies.

Founded by former Jaguar Land Rover and Faraday Institution research electrochemist Sanzhar Taizhan, TaiSan is developing next-generation solid-state sodium batteries through a capital-efficient business model.

The company has secured multiple innovation grants and raised £1.3 million in pre-seed funding to date. The latest investment will support the expansion of its Cambridge laboratory and the launch of operations in Coventry.

According to Founder & CEO Sanzhar Taizhan, TaiSan is focused on advancing electrochemistry to create more sustainable energy storage solutions. The new funding will support further improvements to sodium-ion battery performance and accelerate the path toward broader adoption.

According to Mercia Ventures Investment Manager Shubham Jaipuria, growing demand for resilient battery supply chains is creating opportunities for alternative technologies. TaiSan’s innovations could help accelerate the adoption of sodium-ion batteries as a practical alternative for a wide range of applications.

According to Eos Advisory Partner Andrew Durkie, TaiSan represents the type of deep technology innovation that combines world-class science with strong founder-led execution. He highlighted sodium battery technology’s potential to provide a cost-effective lithium alternative while addressing supply chain and safety challenges.