Actually, I saw some information regarding Ringhals a long while back, up here in the north atleast, it's greener than solar, and as green as windpower. But then Ringhals has half the amount of emissions of an average NPP somehow, it might also be to old info to actually go on.
Actually, Facebooks servers don't capture the heat at all from what I read, though that might have changed during the years, but they are run on hydroelectric power.