Freen OÜ

We are an Estonian company specializing in the manufacture of next-generation vertical-axis wind turbines and innovative sodium-ion battery storage systems. Our sodium-ion batteries represent the next generation of clean energy storage, offering clear advantages for both users and the planet. They rely on readily available sodium materials rather than rare earth metals, which cuts the ecological footprint of production dramatically. Freen delivers European made, certified, reliable and safe sodium batteries manufactured in Estonia with strict ISO quality standards, supported by a full engineering and R&D ecosystem. Discover how our high-performance sodium-ion energy storage solutions can meet and exceed your energy goals.