E-Heat: Jämsä Halli

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Land BankProspective Expansion

Prospective future expansion capacityfacility with additional land secured

Central Finland

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Finland

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Nordics

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Western Europe

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Europe

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EMEA

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E-Heat: Jämsä Halli

Site History

In October 2026, Jämsä reserved the plot for E-Heat until the end of March 2027.

Project Profile

Developer: E-Heat
Site: about 15,000 m²
Heat reuse: Jämsän Aluelämpö district heating

Map and Nearby Locations

Halinkangas

E-Heat Sites

Nearby Facilities

Sites within 15 miles of E-Heat: Jämsä Halli

Distance	Site	About
11.78 miles	Winda Energy: Jämsä (Könkkölä)	Winda Energy is developing a data center on about 11 hectares reserved in the Könkkölä area of Jämsä, alongside a separate solar project.
13.57 miles	Sesterce: Jämsä (Kaipola)	Sesterce plans an AI data center campus on the site of the former Kaipola paper mill in Jämsä, connected to Elenia's high-voltage network.

Operating Company

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.

Facilities

News See all

Sesterce Plans €10B, 600MW AI Campus at Former Finnish Paper Mill

October 08, 2026 Sesterce

French AI infrastructure company Sesterce said Thursday it plans to invest more than €10 billion ($11.2 billion) to convert the former Kaipola paper mill in Jämsä, Central Finland, into a 600 MW AI data center campus. The company's announcement outlines a 200 MW first phase and confirms an anchor...

120MW Facility Proposed in Hämeenlinna, Finland

November 06, 2025 Central Finland

The government of Hämeenlinna this week announced that a reservation agreement has been made for three business plots in Hämeenlinna's MORE industrial park for a data center project. The government of Hämeenlinna this week announced that a reservation agreement has been made for three business...