Fingrid’s investments safeguard a reliable supply of electricity to the Helsinki metropolitan area and promote significant investment in Finland

Fingrid, the transmission system operator, is building a substation in Espoo and expanding substations in Espoo and Siuntio. This will safeguard a reliable electricity supply to the Helsinki metropolitan area as electricity consumption increases. The substations will also supply power to investments made by Microsoft and Fortum long into the future, enabling carbon-free district heating in Espoo.

Microsoft is planning to build three new data centres in Finland, to be sited in Espoo, Kirkkonummi and Vihti. Fingrid is building and expanding its substations in the Helsinki metropolitan area, enabling a reliable power supply for Microsoft’s data centre investments. The substation projects will also improve the system security of the grid in Espoo.

New substation to be built in Hepokorpi, Espoo

Fingrid will build a new substation in Hepokorpi, Espoo, near Ring III from 2023 to 2025. The substation will play a crucial role in electricity transmission and the security of supply in the western part of the Helsinki metropolitan area.

According to the plan, the local distribution system operator, Caruna Espoo Oy, will connect to the Hepokorpi substation, ensuring a reliable electricity supply for the area well into the future. Microsoft’s Espoo data centre and a Fortum heat pump plant will also connect to the substation.

Espoo substation and Kopula substation in Siuntio to be expanded

Fingrid’s Espoo substation will be refurbished and expanded. The primary power supply to Microsoft’s Kirkkonummi data centre will come from Fingrid’s Espoo substation, and Microsoft is building 400-kilovolt cable links to the substation. In addition, Fingrid will expand its Kopula substation in Siuntio. Microsoft’s Vihti data centre will be linked to the Kopula substation by three 110-kilovolt connections.

The data centre areas will yield substantial climate benefits, as Fortum is reducing its use of fossil fuels and will utilise the waste heat from the data centres to produce emission-free district heating in Espoo.

Further information:

Timo Kiiveri, Senior Vice President, Fingrid Oyj, tel. 040 543 3039