@monsieuricon Wildlife/ecosystem reasons. Cooling nuclear power plants and industrial processes with seawater etc has to account for the disruption, making many such projects extremely uneconomical
@monsieuricon @ironiridis you'll still mess up lots of breeding cycles and the like. And that's just the tip of the iceberg, really.
@monsieuricon water source heat pumps are used but afaik not very common. Most people just don't live next to a suitable body of water. Cities you use them with district heating/cooling networks. But then again, not enough cities have district heating...
@monsieuricon just burning things seemed simpler for a long time but it’s slowly changing.
Mannheim (300k inhabitants) installed last year a 20MW heat pump using Rhine water for their city wide central heating system. https://www.mvv.de/en/about-us/sustainability/transformation-of-the-energy-system/climate-friendly-energy-generation/green-heat