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Not the same project, but in Otaniemi they drilled 6km to find the project to not work as planned. Unfortunately this was the best article I could find for now: https://www-lansivayla-fi.translate.goog/paikalliset/4558850...


> In Finland, the temperature rises by 18 degrees per kilometer.

The geothermal gradient at Ithaca is a bit higher than that.

Also, correct me if I'm wrong, but isn't Finland mostly underlain at fairly shallow depth by hard crystalline rocks that are more expensive to drill through? At Ithaca, there's a 3 km thickness of sedimentary rocks before hitting that basement rock.


Grossly oversimplified, inland is swamps & lakes atop crystalline rocks, while Helsinki is landfill punctuated by granite outcroppings.




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