Heat Highway-Interregional heat transmission networks to enable industrial waste heat usage and fossil-free industry

While the electricity transmission grid is connecting many generation, storage and consumption units on an interregional scale, similar options for heat networks are limited. Heat Highway investigates interregional heat transmission networks (HTN), focusing on the utilization of multiple waste heat sources. Heat Highway will go far beyond the state of the art in terms of number of players involved, interregionality and interaction.


While there is a supra-regional electricity grid connecting many generating, storage and consumption units, district heating networks (DHN) are locally limited infrastructures. Currently, around 2,400 district heating networks exist in Austria.


Heat Highway will use these innovations to elaborate two 100 km long HTN in Austria and push three sections towards realization: it prepares KPC investment funding applications for the sections “Zentralraum” and “Linz” and initializes next steps and stakeholder participation in Styria. The investigations in four follower regions ensure replicability.


Heat Highway aims to develop a multi-level toolbox for optimizing the HTN implementation and operation, anticipate industrial waste heat potential from current and breakthrough processes in a decarbonization scenario, develop and prototype a cost-effective pipe system to significantly reduce the investment costs in HTN, and  set up a 3D simulation based “virtual HTN demonstrator” for showcasing the feasibility of HTN systems despite their complexity.



  1. M2-1 Best practice interviews and review concluded
  2. M2-2 Legal status quo analysis conducted
  3. M2-3 characteristic model cases defined
  4. M2-4 Competing solutions assessed
  5. M2-5 Further potentials assessed – generic and for WP4-7
  6. M3-2 Flow calculation tool set up
  7. M3-3 Control algorithm tool set up
  8. M3-4 Organization tool (network codes guideline) set up
  9. M3-5 Business plans tool set up
  10. M3-6 Lean pipeline prototype completed
  11. M4-5 Linz KPC funding request ready to be submitted
  12. M5-5 HTN Zentralraum KPC funding request ready to be submitted
  13. M6-5 Styria stakeholder action plan and workshop
  14. M7-1 Tyrol eastern “Inntal” heat sinks and sources
  15. M7-5 „St. Pölten” & “Vienna South” - stakeholder involvement
  16. M8-2 Virtual demonstration for stakeholder promotion events

"Fernwärme-Übertragungsnetze sind neben den großen Strom- und Gasnetzen die „dritte Dimension“, die in einem nachhaltigen, hocheffizienten, exergieorientierten Energiesystem fehlt ."

- ZITAT Simon Moser -





Energieinstitut an der Johannes Kepler Universität Linz


Energieinstitut an der JKU Linz, www.energieinstitut-linz.at

Energie AG OÖ Erzeugung GmbH
Linz Strom Gas Wärme GmbH
voestalpine Stahl GmbH
Borealis Agrolinz Melamine GmbH
Austrian Institute of Technology
MU Leoben – Lehrstuhl für EVT
Allplan GmbH
eww AG
FH Oberösterreich F&E GmbH
OÖ Energiesparverband
Business Upper Austria
Kremsmüller Industrieanlagenbau KG
voestalpine Stahl Donawitz GmbH
Energie AG OÖ Umwelt Service GmbH
Primetals Technologies Austria GmbH
Ars Electronica Linz GmbH & Co KG


Fernwärme, Industrie, Abwärme, Netze


Simon Moser, moser@energieinstitut-linz.at


01/03/2021 - 29/02/2024