Another success story from SpinLab alumni: Unbound Potential has closed a €14.4 million pre-seed financing round, combining €8 million in non-dilutive grants and €6.4 million in private investments. The round, described as one of the largest pre-seed financings in Europe, marks a major milestone in the company's mission to transform stationary energy storage with its membrane-free redox flow battery technology.
Unbound Potential, based in Switzerland, is developing a redox flow battery technology that stores energy in two liquid electrolytes, enabling low-cost, scalable, and maintenance-light storage solutions for renewable energy. By eliminating the membrane, a costly and failure-prone component in conventional redox flow batteries, the startup aims to significantly reduce investition costs and simplify manufacturing.
“With €14.4 million, we have completed one of the largest pre-seed financing rounds in Europe. This is a decisive step for us as a company and a strong signal for our vision of a future powered entirely by renewable energy,” said David Taylor, Founder and CEO of Unbound Potential.
The investment round was led by Founderful (lead investor), Kvanted (co-lead), and the Zürcher Kantonalbank (ZKB). Additionally, the company secured grant funding from SPRIN-D (Germany’s federal innovation agency), Innosuisse, the Migros Pioneer Fund, and KlimUP, an initiative of the City of Zurich.
“By 2040, the world will need three times more batteries than supply can deliver,” said Antonia Albert, Principal at Founderful. “Unbound Potential has created the simplest and fastest-to-produce battery in the world. As demand outpaces supply, availability - not just innovation - will drive the energy transition.”
Unbound Potential’s technology is already being put to the test in high-profile pilot collaborations. The startup is working with Amazon to explore the role of its batteries in electrifying logistics operations, particularly in energy-intensive sectors such as AI data centers and EV fleet management. They are also in discussions with FlexBase, the developer behind “Star of Laufenburg”, which is set to become Europe’s largest redox flow energy storage project. A first pilot plant is scheduled to go online in mid-2026 at the site of a local pilot partner.
With this fresh capital, the company plans to accelerate the development of its membrane-free redox flow technology and demonstrate its scalability in initial pilot projects.