Demonstrating large thermal energy storages and improving their components, processes, and procedures for an accelerated realisation of 100% sustainable district heating networks in Europe


Project Description

“In the heating sector, energy demand can fluctuate drastically over the course of the year depending on the climate conditions, with the peak demand occurring during the coldest months in winter. The availability of renewable heat sources such as solar thermal heat is highest during the warm sunny months of summer, while most waste heat streams are available all year round. To bridge the temporal mismatch in supply and demand and therefore maximising the share of renewables and waste heat in the heating sector, large-scale seasonal thermal energy storages must play a central role in district heating networks. The necessary broad roll-out of this technology is only possible if the existing knowledge and experience, cooperative adaptations and further developments are made and broadened to many countries, companies, experts, and policymakers. Taking this into consideration, the TREASURE project will bridge the gap between research and practice to ensure robust, safe, cost effective and sustainable large-scale thermal energy storage; developing secure and smart system integration concepts and increasing the effectiveness of realizing the pit thermal energy storage (PTES) technology in Europe to take a major step in phasing out fossil fuel reliance in district heating systems in line with the European Green Deal.
TREASURE enables the realization of seven pit thermal energy storage demonstrators in five different countries as well as having a constant interchange with a group of 16 satellite initiatives, collecting its experiences and feeding these with knowledge and experiences from TREASURE.”

Project Consortium

  1.  AEE – Institut für Nachhaltige Technologien
  2.  Energieinstitut an der Johannes Kepler Universität Linz
  3.  PlanEnergi Fond
  4.  Steinbeis Innovation gGmbH
  5.  Fenix TNT s.r.o.
  6.  Newheat
  7.  HIR Hamburg Institute Research gGMbH
  8.  Technische Universität Dänemarks
  9.  Aalborg CSP
  10.  Euroheat & Power
  11.  Szczecińska Energetyka Cieplna Sp.
  12.  SEC Region Spółka Z Ograniczoną Odpowiedzialnością
  13.  SOLID Solar Energy Systems GmbH
  14.  PORR Bau GmbH
  15.  Communauté d’agglomération Pau Béarn Pyrénées
  16.  Rafako Innovation Spółka Z Ograniczoną Odpowiedzialnością
  17.  Geo (Fond)
  18.  GLAPOR Werk Mitterteich GmbH
  19.  Vinco Construction
  20.  Wien Energie GmbH
  21.  Technische Universität Dresden
  22.  JKP Grejanje Pancevo
  23.  Hansestadt Rostock
  24.  Stadtwerke Hechingen
  25.  ENGIE

Project duration

01.01.2024 - 31.12.2027

Funding provider


Funding program

Horizon Europe
European Union Logo
This project has received funding from the European Union’s Horizon Europe research and innovation programme under the grant agreement No 101136095.


Find more information to the project on the EU CORDIS website here.

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