




Across Europe, extensive district heating and cooling infrastructure is already in place. Instead of replacing these systems, FIT-EX-DHC (Flexible Integration Technologies for Existing District Heating and Cooling Systems) explores how we can make better use of what we already have.
The project develops and demonstrates solutions that can help existing networks integrate more renewable energy and waste heat, while operating in smarter and more flexible ways. Partners from across Europe bring together expertise in district energy, technology, research and implementation. Solutions will be tested in real-life cases and turned into practical knowledge that can be used by other energy systems across Europe.
case studies
countries
million in EU funding

Exploring the integration of industrial waste heat, river water heat and geothermal energy into a new district heating and cooling system.

Exploring the use of waste heat from a biogas plant through heat pumps to reduce reliance on existing heating sources.

Exploring wastewater heat recovery and geothermal energy as alternatives to fossil fuels in high-temperature district heating.

Investigating how gas-based micro district heating networks could be connected to renewable heat sources.

Investigating a low-carbon heating network based on geothermal heat pumps and its potential connection to a public district heating network.

Exploring how three separate district heating networks could be connected and upgraded to integrate wastewater heat and lower operating temperatures.

Investigating geothermal energy, heat pumps and other low-carbon solutions for an existing heating and cooling network serving a hotel and conference complex.

Exploring small-scale district heating networks using biomass, solar thermal energy and heat pumps to reduce reliance on gas.

Investigating how heat pumps and geothermal energy could support the modernisation of district heating, with a local hospital as a pilot site.

Exploring the use of heat from biogas production and wastewater to supply existing district heating networks and nearby buildings.

Investigating opportunities for expanding district heating and integrating large heat pumps to reduce dependence on fossil fuels.

Exploring the potential to expand an existing biomass-based district heating network to more municipal buildings, homes and local businesses.

The FIT-EX-DHC project is co-funded by the European Union under the LIFE Clean Energy Transition Programme (LIFE-2025-CET) and has been awarded EUR 1,874,578.48 in EU funding.



Benedicte Carlsson Bojesen
Project Manager
Energy Cluster Denmark
