Wattium Oy

Founded in 2015, Wattium Oy is a private company headquartered in Oulu, Finland with approximately 11-50 employees specializing in Solar, Energy Storage, Other.

Wattium Oy is a Finnish technology company that develops and supplies integrated off-grid electrical systems for cottages and leisure properties. The company was founded to solve the practical challenges of reliable electricity in remote locations without grid connection. Wattium specializes in the TwinPower hybrid system, which combines solar panels, battery storage and backup generators into a single automated, pre-assembled unit. The system is designed specifically for Nordic winter conditions and operates automatically without requiring technical expertise from users. Core features include 3000W continuous power output, LiFePO4 battery technology rated for charging at temperatures down to -45°C, remote monitoring via smartphone, and seamless switching between solar, battery and generator power. The company handles system design, integration, installation and ongoing support, positioning itself as the end-to-end responsible partner rather than a component supplier.