There is enough waste heat produced in the EU to heat EU’s entire building stock

District heating is the technology that can utilise this resource. But district heating will not only use waste heat to secure heating as the global energy demand increases, it will also be a part in solving problems with oil dependency, air quality and greenhouse gas emissions. Because of this the EU is co-funding CELSIUS, so that more cities in Europe can learn about district heating as well as district cooling and plan, implement and optimise smart infrastructure solutions for heat and cooling.


Join us!


- engaging with potential CELSIUS Cities

of the city

- fill out New CELSIUS city questionnaire

Support need identification

- discussion between project and city

    Letter of Commitment

- the city commits to become a CELSIUS City


- demonstrators, toolboxes, workshops and expert group

District Heating and Cooling

District heating is a heating system consisting of a heating plant and a pipe network filled with hot water. The hot water is circulated by pumps, from the heating plant to the client and back again to the heating plant. A heat exchanger at the customer transfers the heat from the district heating network to the building’s own heating and hot water systems. The return water continues out through the return pipe and is pumped back to the heating plant, where it again is heated.