Enter your username and password here in order to log in on the website
District Heating and Cooling

Annex XI Project 01

The Research / IEA DHC Annexes / 2014-2017 / Annex XI / Annex XI Project 01

Transformation roadmap from high to low temperature district heating system

Overview of the four different technology generations of district heating


Register for free and Log in in the upper right corner of the website to download the  final project results.


Lead Country: Sweden

The project focuses on developing a transformation roadmap for the technology shift from one generation of district heating to another. The focus is the transformation from second generation (2GDH) and third generation (3GDH) systems using high and medium supply and return temperatures for heat distribution to fourth generation (4GDH) systems using lower supply and return temperatures. Additionally some experiences for transforming first generation (1GDH) systems will be presented.

The transformation roadmap will be elaborated building on seven research issues. It will be based on results from earlier research projects and experiences gained from operation of existing district heating systems. The transformation roadmap overview will provide unique insights and information . 

The main benefit of this project will be a clearer overview of the steps required to transform district heating nets for the future. It is intended as a tool to support the future competitiveness of district heating.

Project contact:

Sven Werner, PhD, Professor

Halmstad University (Högskolan i Halmstad), SET,
PO Box 823,
SE-30118 Halmstad, Sweden

Phone: +46 351 67130

Email:  sven.werner@hh.se