Two thermal wells were bored in the Otaniemi geothermal heating plant in Espoo’s pilot project to a depth of 6.4 kilometers, where the bedrock is about 120 degrees.
Water could not adequately flow from one well to another, and the intended heating plant’s power would not have been commercially viable, so the project was abandoned. As a result, St1 offers project wells for academic study.
The hardest Finnish bedrock has drawn a lot of interest as a study topic for Finland’s deepest wells.
The wells provide a special study environment for everything from microbiological research to the development of geothermal energy and other geosciences.
In addition to international parties, researchers from the University of Helsinki, the Geological Research Center GTK, and the Technology Research Center VTT have also showed interest.
Karoliina Vuorenmäki is pictured.
According to the bulletin, GTK’s top geoenergy expert Teppo Arola, “GTK regards the research use of the Otaniemi wells as a unique chance to raise Finnish and international know-how in geothermal energy and other geosciences.”
St1 intends to keep making investments in the advancement of geothermal heat generation. The development effort has a solid foundation thanks to the geophysical and geological expertise acquired through the Otaniemi project.
The manager of St1’s Heat from the Ground unit, Hannes Haapalahti, writes in the bulletin, “The know-how acquired in Otaniemi has been able to transfer to the development of conventional heat wells, producing even more competitive solutions for heating larger properties, such as housing associations and shopping centers.
“The transition to emission-free heat production will be significantly aided by advanced geothermal systems.”