IEA IETS Annex 15: Industrial Excess Heat Recover (Phase 3)

Within the framework of the IEA IETS Annex 15 - Phase 3, potentials for the use of waste heat as well as technologies for its integration are collected, bundled and processed through contributions from national research activities. The aim of the project is to identify potential collaborations in an international context and to network knowledge from the individual national research activities. Newly gained knowledge is disseminated nationally, e.g. in the course of a stakeholder workshop, and integrated into ongoing research activities.

Short Description

The international IEA IETS Annex 15 pursues a multi-disciplinary approach to the integrated use of industrial waste heat and aims to optimize energy efficiency in a global context. The focus is on the optimization and (further) development of energy- and cost-efficient technologies for industrial application, taking into account the industrial framework conditions.

Progress in energy-relevant technologies is of great importance for achieving the collective goals of energy security, environmental protection and economic and social developments. Participation in the IEA-IETS enabled Austrian stakeholders to establish international cooperation and to offer R&D services in the field of industrial energy-relevant technologies and systems. In addition, access to valuable know-how was created, which will be distributed to Austrians stakeholders, and increased visibility in the international environment was achieved.

The main objective of the participation in Annex 15 was to integrate Austrian research institutions into the international network and to participate in a platform for the exchange of information and the initiation of international projects in the field of waste heat utilization in industrial processes. In the international consortium, national knowledge on the following subtasks was collected and processed:

  • Subtask 1: Combination of methods for excess heat identification and quantification
  • Subtask 2: Consequences for excess heat levels of future changes in industrial energy systems
  • Subtask 3: Operational aspects in industrial energy systems
  • Subtask 4: Opportunity and risk assessment for excess heat projects
  • Subtask 5: Compilation of innovative excess heat projects

New findings from international cooperation in the IEA IETS Annex 15 were integrated into ongoing national research activities.

Project Images

Terms of use: The pictures listed underneath the header “Project Pictures” originate from the projects in the frame of the programmes City of Tomorrow, Building of Tomorrow and the IEA Research Cooperation. They may be used credited for non-commercial purposes under the Creative Commons License Attribution-NonCommercial (CC BY-NC).


Austria, Canada, Denmark, Germany, France, Italy, Nederlands, Norway, Portugal, Sweden

Contact Address

AIT Austrian Institute of Technology GmbH
Univ. Prof. Dipl.-Ing. Dr. techn. Rene Hofmann (Projektleitung)
Giefinggasse 2, 1210 Wien

AEE - Institut für Nachhaltige Technologien
DI Jürgen Fluch
Feldgasse 19, 8200 Gleisdorf

TU Wien, Institut für Energietechnik und Thermodynamik
A.o.Univ.Prof. Dr. Heimo Walter
Getreidemarkt 9, 1060 Wien

Energieinstitut an der Johannes Kepler Universität Linz Verein (EI-JKU)
Simon Moser
Altenberger Straße 69, 4040 Linz