There have also been plans to do this in Finland, but most of what I can find is either marketing material or news articles discussing plans [1, 2] rather than

There have also been plans to do this in Finland, but most of what I can find is either marketing material or news articles discussing plans [1, 2] rather than actual achievements, so I'm not sure what actually became of it. There's a brochure from the national innovation fund that mentions a town actually covering about half of its heating needs with heat from a data center, though. [3] Swedish telco Telia also has had similar plans for a data center in Helsinki, Finland, and their website says their "goal is to recover and reuse all the heat produced" [4], but I'm not sure how much weight to give that since proclaiming a goal only costs a few words. It would be nicer if they said what they're actually doing at the moment even if it were much less than "all of it". [1] https://www.zdnet.com/article/from-deep-underground-data-center-will-help-heat-helsinki-homes/ https://www.zdnet.com/article/from-deep-underground-data-cen... [2] https://www.theguardian.com/environment/2010/jul/20/helsinki-data-centre-heat-homes https://www.theguardian.com/environment/2010/jul/20/helsinki... [3] https://www.sitra.fi/en/cases/district-heating-from-data-centre-waste-heat-mantsala/ https://www.sitra.fi/en/cases/district-heating-from-data-cen... [4] https://www.telia.fi/business/telia-helsinki-data-center https://www.telia.fi/business/telia-helsinki-data-center