E-Heat: Honkajoki (Kirkkokallio)

E-Heat Oy is a privately held Finnish company founded in 2021 and headquartered in Tampere. Lauri Pispa is chief executive. The company builds and operates small containerised data centres beside district heating plants and industrial sites, and feeds the recovered server heat into local heating networks.

E-Heat sells colocation hosting to server customers whose equipment uses direct-to-chip liquid cooling. It also sells the heat to utilities and takes part in Fingrid's balancing power market by pausing customer compute when the grid needs reserve power. Its plants run in towns including Kankaanpää, Honkajoki, Merikarvia, Orimattila, Jämsä, Outokumpu, Valkeakoski and Ivalo. Heatchain Oy designs and monitors the heat side of the plants, and Wemasto Oy of Orimattila builds them. In 2026, the company had 12 data centres in Finland.

E-Heat History:

• In October 2026, the city of Jämsä announced a plot reservation in Halli for a planned E-Heat AI data centre.
• In December 2025, E-Heat plants in Valkeakoski and Honkajoki entered service.
• In June 2025, the Merikarvia plant started supplying the town's district heating network.
• In December 2024, E-Heat expanded its Kankaanpää plant.
• In May 2024, E-Heat commissioned its first data heat plant in Kankaanpää.
• Founded in 2021 in Tampere.