There's a nice heat pump in Helsinki, Finland, as well, producing district heating from waste water.[1] [1] https://www.helen.fi/en/news/2023/waste-heat-plays-

There's a nice heat pump in Helsinki, Finland, as well, producing district heating from waste water.[1] [1] https://www.helen.fi/en/news/2023/waste-heat-plays-a-significant-role-in-a-sustainable-energy-system https://www.helen.fi/en/news/2023/waste-heat-plays-a-signifi...