IEA DHC
Summary
The IEA DHC is pleased to share that the main outputs of the IEA Thermal Networks Coordination Group (TNCG), now been published on the IEA DHC website:
- https://www.iea-dhc.org/the-research/iea-dhc-cross-cutting-research
These publications are now available on the new cross‑cutting research page of IEA DHC (including download links). You are invited to:
- share the link within your TCPs, networks and institutions,
- use the material in your presentations, policy dialogues and events, and
- provide feedback or suggestions for future joint work.
This page presents cross‑cutting research with involvement of the IEA District Heating and Cooling Programme that goes beyond individual Annexes.
Thermal Networks: Empowering the Smart Transition to Net Zero
This flagship report, prepared by the IEA Thermal Networks Coordination Group (IEA TNCG) with 11 IEA Technology Collaboration Programmes, shows how modern district heating and cooling integrate renewables, waste heat, large heat pumps, storage and digitalisation to deliver deep decarbonisation and affordable comfort. It targets decision makers in government, utilities, industry and finance, offering clear messages on policies, planning tools and investments for a just and secure heat transition.
Thermal Networks Case Studies: Impact Factsheets and Success Stories
The companion case study collection presents concise factsheets from several countries, covering solar district heating, geothermal systems, bioenergy with CCS, thermal storage, industrial surplus heat and large‑scale heat pumps. Each example summarises concept, investment, CO₂ impact and co‑benefits, providing practitioners and planners with ready‑to‑use input for projects and local heating and cooling plans.
District Heating Network Generation Definitions
This short guidance document from the IEA DHC Executive Committee offers a practical, temperature‑based definition of district heating network generations for use in communication, planning and benchmarking. It clarifies that systems previously labelled “5th generation” should be described as thermal source networks (TSNs) and treated as a subclass of 4th generation networks, and defines 1st–4th generations by carrier medium (steam vs. water) and typical supply temperature ranges.
Thank you once again for your valuable contributions and collaboration in TNCG. They made these joint outputs possible.
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