Presenting Pilot Areas within HEAT 35 Project – City of Kraków, Poland

Date: 25.07.2025
By: HEAT 35
As part of the HEAT 35 project, the City of Kraków in Poland, has been selected as one of the pilot areas.

The Krakow’s heating system is supplied with heat from three sources: CHPP in Kraków (68%), CHPP in Skawina (23%) and the incineration plant (9%). The company provides heat supply to approx. 65% of the city’s residents, through over 960 km of the heating network. Over 70% of it is a pre-insulated network, made in the latest technology allowing for signaling of possible uncontrolled water leaks. Heat is supplied to residential sector, shopping malls, schools, hospitals and churches.

The pilot project is to investigate the potential of using hybrid heat transfer stations, assess their efficiency, cooperation with the network and the necessary financial outlays.

Hybrid Heat Transfer Station is a modern system that combine traditional heat source with renewable or alternative technologies for more efficient thermal energy management in buildings.

It is a set of devices used to prepare heat (for heating and domestic hot water) that can use more than one energy source. It often combines:

• heat from a district heating network (system) – the main source,

• heat pumps, solar collectors, gas boilers or other renewable energy sources – as an alternative.

 The pilot project will significantly contribute to improving the system in several key areas. It will increase energy efficiency and help meet the necessary RED II requirements. By increasing the share of renewable energy sources and reducing reliance on three heat suppliers, the city will strengthen its energy security, become climate neutral and be more resilient to geopolitical risks. Moreover, the hybrid heat transfer stations will increase the use of local energy resources, helping to reduce heat losses. Overall, the pilot action will support the transition to a more diversified, secure, and sustainable energy system for the city and its residents.