Extracting heat from rocks. That sounds like a good idea. Last week a team from Stures Brunnsborrning arrived to Tungelsta. Working with Tornberget (they manage the council owned properties), they will drill 36 boreholes around the soccer pitch at the school. They need to drill 300 meters down. When they are finished the Tungelsta school will be heated by geothermal energy. I could hear the team setting up the rig so I walked over for a chat and some photos. It's a bit technical, but if you want to know more there's more to read (in English) on their web site. On this visit they were doing some tests and the real work will start in the summer.
