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 Workshops

26 – 27 May, Gothenburg: Two demonstratörs, Social and financial aspects and Network managment
Short-term storage and district heating to ship in harbour – The first day of the workshop will cover how to use buildings as short-term storage and how to connect a ship in harbour to district heating. Experiences and lessons learned from the two demonstrators will be shared, including system performance. Site visits are included.

Social and financial aspects of district heating and cooling and network management - The second day of the workshop will include information from CELSIUS about marketing, investments, cost management, price models, partnerships, competitive analysis and more. Half of the day is spent on network management and a visit to the control room. More info here and registration via email

2 June, Rotterdam: Social Marketing for District Heating
The CELSIUS team will map out how social media can be used in the rollout of heat networks. Connecting consumers to heating networks is not just about the price of heat. There are other considerations, motivations and barriers that determine what consumers want. Social Marketing starts with understanding the audience, central questions here are: Who is the target audience? What is important for this group when making decisions? More info here and registration 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.