Tag #River Heating

What are the key technological and economic factors that currently limit widespread adoption of river heat pumps in Germany?

Several German cities utilize river water for heating, including Mannheim (3,500 households, 3-5% of city's heating needs) and planned projects in Cologne (up to 50,000 households) and Jena (half the city's heating needs). High initial costs and the need for subsidies currently limit widespread adoption. The technology's feasibility varies with river size and water temperature.