Accelerating the energy transition in cities


A collaboration hub for efficient, integrated heating and cooling solutions supporting cities in their energy transition to carbon-neutral systems.


Gathers and shares technical, economic, social and policy expertise.


Connects members, exchange and foster innovation, leading to solutions that accelerate sustainable development in Europe and across the world.

The process leading to the realisation of a sustainable and smart heating and cooling project shows a great variance from city to city, district to district. Taking this into consideration, Celsius provides demand driven support actions for cities looking to decarbonise their heating & cooling systems while supplying affordable comfort to its citizens.

As a demand-driven collaboration hub we gather and share knowledge through our Toolbox, newsletter, webinars and various events. Moreover, we connect the members of our network to foster innovative solutions and influence European policy. Join us!

Katrina Folland, Celsius Coordinator

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Low Temperature District Heating

The Celsius Forerunner Groups

EU Smart Cities Programmes 

Heating and Cooling planning at local level

Low temperature district heating can prove to be an important part in also keeping the globe’s temperature low. This webinar presents some of the opportunities and challenges cities may encounter in their endeavour towards a sustainable and efficient low temperature district heating systems.

Based on the premise that cities and districts are in a position to take the lead in the energy transitions, the Celsius Initiative in now creating forerunner groups where cities and experts can come together to facilitate the implementation of heating and cooling solutions.

Horizon Europe Missions is a new initiative from the EU Commission to increase funding effectiveness by pursuing clearly defined targets. The mission board for climate-neutral and smart cities has been tasked with identifying one or more specific missions for implementation under Horizon Europe.

Heating and cooling will play a decisive role in the long-term decarbonisation of Europe’s energy system: the sector is responsible for 51% of final energy use in Europe and about 27% of CO2 emissions.

Read the latest Celsius Newsletter

The CELSIUS  Newsletter is published monthly to promote and improve the visibility of what is happening in our network.

The latest issue  focuses on solar district heating. You find this newsletter here. 

​Give cities a voice in Brussels

No energy transition without sustainable cities; no sustainable cities without sustainable heating and cooling. As the 2016 European Commission’s Heating & Cooling Strategy made clear, district energy systems will have to play a significant role to make Europe’s broader climate and energy ambitions a reality. And cities will be in the driver’s seat to make a successful energy transition happen.

This is the Celsius Initiative website

Are you looking for information on the completed CELSIUS project? Click here to find the project’s website.

More from Celsius

"The Toolbox is user-friendly with high quality"

Celsius Toolbox: an interactive knowledge-transfer platform for heating and cooling solutions.

A fast track for research and innovation

The largest network within heating and cooling offer powerful solutions for your tasks.

We create demand driven Forerunner Groups

We match cities based on their perceived issues and problems so they can jointly find solutions.