Monday, May 14, 2018

Finland: Stimulation Begins at Espoo Geothermal District Heating Project

St1 geothermal pilot project at Otaniemi in Espoo reaches stimulation stage (News Release)

A project of energy company St1 to build Finland’s first industrial scale emission-free geothermal energy heating plant has now progressed to the stimulation stage. 

The pilot project is seeking to extract bedrock heat for use in district heating by drilling two boreholes to a depth of several kilometres. Water will be pumped down one of these boreholes for underground geothermal heating, with the resulting hot water then extracted via the other borehole. 

The heating plant will feed this heat into the local district heating network. The stimulation stage will study the flow of this borehole water through rock fissures at a depth of more than six kilometres underground.