IEA IETS Task 15: Industrial Excess Heat Recovery (Phase 4)

Excess heat recovery plays a crucial role in reducing emissions in industry. Through strategic planning and efficient process integration, companies can improve their energy efficiency and significantly reduce their carbon footprint. Task XV facilitates the international exchange of experience and knowledge between different companies. This identifies best practices to promote the implementation of energy-efficient technologies in industry.

Short Description


The international IEA IETS Task XV pursues a multi-disciplinary approach to the integrated use of industrial waste heat and aims to optimise and (further) develop energy- and cost-efficient technologies for industrial applications in a global context.


The IETS TCP Task XV is entitled "Industrial excess heat recovery" and has so far been worked on in three successive subtasks (phases). The work will be continued and supplemented in a 4th subtask (phase) under the title: „Strategic planning, risk mitigation and systematic knowledge exchange of excess heat recovery in complex industrial systems".

This 4th Subtask will be sub-divided into these three activities:

  • Activity 1: The role of excess heat in industry and industrial symbiosis
  • Activity 2: Strategic process integration/intensification for future changes in industrial energy systems
  • Activity 3: Ongoing projects at different TRL levels and systematical knowledge transfer

There are a number of innovative research and development projects in Austria that are also internationally exemplary. This applies in particular to the areas of design and operational optimization, storage and heat pump integration and the determination of decarbonization paths for energy-intensive industry. This task provides a platform for the targeted exchange of knowledge between research institutions, technology providers and industrial companies worldwide. Austrian participation enables knowledge transfer from and to Austria. Austria's innovative advantages are presented internationally, thus opening up commercialization opportunities.

Furthermore, the Austrian consortium will lead the new sub-task and will organize the cooperation and disseminate results.

Expected results

The expected results are

  • to improve international cooperation in the field of industrial waste heat utilization and industrial symbiosis,
  • to create a platform within the IEA for the exchange of experience and knowledge from R&D projects in the three subtask activities,
  • improving knowledge in the participating countries on the combination of methods for identifying and quantifying heat surpluses,
  • the exchange of experience on strategic planning and risk mitigation in waste heat projects,
  • raising awareness of the impact of future changes in industrial energy systems on excess heat,
  • to continue work on an online database of waste heat projects that can be used effectively for future assessments to develop clear, replicable strategies and guidelines,
  • and, to increase knowledge on the impact of various possible future innovative developments on the performance of industrial waste heat projects in order to identify future plans or trends in the participating countries.


Austria (Operating Agent), Denmark, France, Germany, Norway, Sweden

Contact Address

Project leader

TU Wien
Institute of Energy Systems and Thermodynamics
Prof. René Hofmann
Getreidemarkt 9/E302, 1060 Vienna
Tel: +43 1 58801 302327

Project partners

Wolfgang Weiss
AEE - Institut für Nachhaltige Technologien (AEE INTEC)
Feldgasse 19, 8200 Gleisdorf

Anton Beck
AIT Austrian Institute of Technology GmbH
Giefinggasse 4, 1210 Wien

Simon Moser
Energieinstitut an der Johannes Kepler Universität Linz
Altenberger Straße 69, 4040 Linz