Project Image Pool
There are 9 results.
Terms of use: The pictures on this site 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).
Kick Off Meeting des IEA ES Task 48 am KTH in Stockholm Oct. 13th 2025
We successfully kicked off Task 48 at KTH Royal Institute of Technology in Stockholm - together with our colleagues from Task 47: Components for Thermal Energy Storage. We are inspired by the energy and expertise everyone brought to the table. Our discussions set a strong foundation for collaboration on advancing thermal energy storage (TES) materials — including phase change materials (PCM), thermochemical materials (TCM), and high-temperature sensible storage. Over the coming months, we’ll work together to develop measurement guidelines for TES materials, compile an overview of innovative TES materials and build a shared, high-quality TES materials database. A big thank you to Saman Nimali Gunasekara and colleagues for hosting and to all participants for their inspiring contributions!
Copyright: Saman Nimali Gunasekara / KTH
IEA ES Task 39 experts at the Meldorf PTES under construction
The IEA ES Task 39 expert group in from of the pit thermal energy storage of Meldorf (DE) under construction.
Copyright: IEA ES Task39
The 4 large thermal energy storage technologies of IEA ES Task 39
Schematic presentation of the 4 large thermal energy storage technologies that are included in the IEA ES Task 39: Tank thermal energy storage (TTES), pit thermal energy storage (PTES), borehole thermal energy storage (BTES) and aquifer thermal energy storage (ATES).
Copyright: Solites
The phases of a large thermal energy storage development
The 4 phases in the development process of a large thermal energy storage, with the main actors or stakeholders and the corresponding tools developed in IEA ES Task 39
Copyright: Planenergi
Overview Task 58 for Material and Component Development for Compact Thermal Storage Systems
The figur shows the overview and contents of the IEA SHC Task 58 for material and component development for compact heat storage. The task is divided into 4 subtasks dealing with the definition of boundary conditions, development of TCM and PCM materials, test methods and component design of compact heat storage systems.
Copyright: AEE INTEC
TCM Storage System Prototype in Container for integration in a single familiy house
The picture is showing a TCM storage system with 3 moduels in combination with a heat pump system and 2 m³ buffer storage installed in a container as complete storage system. The container is shipped to a single familiy housein Warsaw and installed next to the house to store surplus of solar thermal energy from summer and provide space heating in winter
Copyright: AEE INTEC
Diagram of the Flexible Sector Coupling model.
The electric energy system is composed of the sectors electricity, mobility and heat. Generated electricity is directed to the sectors mobility and heat along the pathways thermal energy, fuels and electricity.
Copyright: IEA ES TCP Task35
Pit thermal energy storage in Dronninglund (DK)
The pit thermal energy storage of 60,000 m3 in Dronninglund, Denmark, stores heat coming from a solar thermal field and a heat pump.
Copyright: Fjernwärme Dronninglund
IEA ES Task 45 experts alongside the Hechingen pit thermal energy storage
The pit storage in Hechingen, Germany, i already dug out. It will be finished and connected to the district heating system of Hechingen in 2025.
