Task 55
Task 55
SHC Task 55

Integrating Large SHC Systems into DHC Networks

Towards the Integration of Large SHC Systems into District Heating and Cooling (DHC) Networks

DHC Diagram

The SHC Task 55 aims to identify technical and economic requirements for a commercial market introduction of solar district heating and cooling (DHC) in a broad range of countries. More information can be found in the Task description.

Danish SDH market reaches new milestone: 11 infographics describing SDH technology and markets for download

Danish SDN Achievements

Denmark has consolidated its lead in the global solar district heating market, as capacity topped 1 GWth in August 2019. The 120 solar district heating plants that are now in operation throughout the country total 1.1 GWth (around 1.6 million m²).

The above shown chart is one of eleven infographics that were developed within Task 55 to illustrate SDH technologies, advantages and market developments. The files are available as jpgs and pdfs for download in three languages – English, German and French - and can be used free-of-charge in third-party publications. The creation and design of the infocharts was sponsored as part of a planned SDH investor brochure “Solar Heat For Cities” by the following Task 55 members: Solites (Germany), European Copper Institute (Belgium), Sunrain (China), CSP Aalborg (Denmark), newHeat (France), Savosolar (Finland) and Greenonetec (Austria).


  • Download the infographics in English
  • Download the infographics in German
  • Download the infographics in French
Task Information

September 2016December 2020

Ms. Sabine Putz
+43 316 292840 45


This is collaborative work with IEA DHC

What's New
  • Fact sheets TASK 55 available (Posted: 2020-11-20)
  • Improved design for giga-size pit heat storage - Denmark’s cost-effective, tried-and-true seasonal pit heat storage concept needs to be modified if it is to be implemented across Europe, since district heat temperatures are higher and groundwater may be only 5 to 15 metres from the surface. (Posted: 2020-10-27)
  • Four years of global SDH research summarised in online workshop and factsheets - On Thursday, 15 October 2020, an online technology transfer workshop about large solar district heating networks will provide attendees with the perfect opportunity to listen to the key takeaways from four-year IEA SHC research platform Task 55 – Towards the Integration of Large Solar Systems into District Heating and Cooling Networks, which will end this year. (Posted: 2020-09-30)
Task Brochure

Solar Heat for CitiesSolar Heat for Cities 

The "Solar Heat for Cities: Sustainable Solution for District Heating" brochure is now available and can be viewed / printed using the link below:


>> View / Print Version