Helen Ltd

Finnish Energy Company Supplying Electricity and District Heating

Added by Maílis Carrilho on October 5th, 2026

Summary

Helen Ltd is a Finnish energy company wholly owned by the City of Helsinki. It supplies electricity, district heating and district cooling, and is transitioning its energy production through electrification, heat recovery and other investments. Helen has integrated data center waste heat into Helsinki’s district heating network since 2010. Its agreement with OnZero covers heat recovery from a planned AI data center, with deliveries scheduled to begin in 2027.