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.

Celsius Animation

Here is the long version.

Only have a minute?
Watch the short animation here.

Upcoming Events

16 September, Brussels: Case studies and business model workshop
In collaboration with the European Commission’s European Innovation Partnership on Smart Cities and Communities, CELSIUS will organize a workshop on case studies and viable business models for complex smart city solutions. The workshop will bring together excellence from several advanced European Smart Cities projects with expertise on, among others, smart governance, integrated planning, energy efficiency, energy planning and district energy solutions.

You are invited to join us for this exciting workshop and learn from the accumulated knowledge and best practice of the projects as well as to contribute with your own experiences.

See more:
Invitation ! Registration

: Other questions via email

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.