Espoo Clean Heat

Carbon neutral district heating in Espoo in the 2020s

Espoo Clean Heat

Showcasing clean heat in Finland

District heating is a local system for cities that transfers energy in heated water from energy sources to heat users in a network of underground pipes. It is the only way to recycle heat energy from numerous different and distributed sources to thousands of buildings under one optimized infrastructure.

In Finland, Fortum is showcasing a next generation district heating system. Operating since 1954, it is currently undergoing a major transformation to replace fossil fuels with smart and flexible solutions that are largely based on renewable electricity: waste heat utilization, heat pumps and electric boilers. Approximately 40 percent of district heating demand will be met by recycling emission-free waste heat from Microsoft's new data centers. Artificial intelligence optimizes the operations of the entire system.

Fortum and the City of Espoo have committed to this transformation that will result in carbon-neutral district heating by 2030 in the Espoo, Kauniainen and Kirkkonummi regions. The use of coal will be discontinued in 2025. This project, called Espoo Clean Heat, provides a flagship example of efficient decarbonization and transition to local self-sufficient heating on a large scale. 

Espoo Clean Heat transformation to carbon neutral production

Examples of clean energy projects

Boy and woman with laptop

mid-2020's (est): Recycling waste heat from Microsoft's data centers

A growing number of data centers is needed to accommodate the increasing global digitalization. Therefore, it makes sense to build big data centers in city locations where waste heat from servers can be recycled to district heating networks. This decarbonizes heating on a large scale, creating substantial climate benefits and stable heating prices.

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Demand side response district heating Fortum

2022: AI-driven smart steering to reduce emissions

Demand side response (DSR), or smart control of district heating, optimises both the heat production and the heating of buildings at differing intervals so that heat can be allocated to where it is most needed at a given time. With demand side response, the use of back-up heat plants can be reduced, resulting in lower emissions.

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Vermo, Finland air-to-water heat pump plant

2020-2028 (est): Industrial-scale air-to-water heat pumps

The technology that is used in air-to-water heat pumps at homes has been developed to an industrial scale in several of our pioneering projects. Within a few years, these plants will produce a significant part of the Espoo area's district heating. At the same time, they create cooling for regional needs.

Suomenoja heat pump facility

2021: A third heat pump unit to recover heat from waste water

A 25-megawatt unit, the largest in Finland, was built in the Suomenoja, Espoo heat pump plant in 2021. As with the already existing two units, the latest heat pump recovers excess heat from treated wastewater, as well as from seawater in the summer. The plant covers approximately 20% of the demand in the district heating network area.

Kivenlahti facility in Espoo

2020: A bio-heating facility in Kivenlahti

A biomass-fired 49-megawatt heating plant was commissioned in 2020 on the Kivenlahti, Espoo site where two wood pellet boilers were already producing district heat. The new facility replaced one of the last two remaining coal-fired units in the Suomenoja power plant and increased the share of carbon-neutral district heating in Espoo to 40%.

Share of carbon neutral district heating in Espoo (forecast)

The share of carbon neutral district heating in Espoo (forecast)

Media kits

Contact us

Timo Piispa

Timo Piispa

VP, Heating and Cooling Finland
timo [dot] piispa [at] fortum [dot] com

Heikki Keskiväli

Heikki Keskiväli

Manager, Strategic Projects
Heating and Cooling Finland
heikki [dot] keskivali [at] fortum [dot] com