Home > Technology Agreements > Energy Storage

The IEA provides support for international collaboration on energy technology R&D, deployment and information dissemination. These groups function within a framework created by the IEA - the International Framework for International Energy Technology Collaboration. The views, findings and publications of these international groups (formally called Implementing Agreements) do not necessarily represent the views or policies of the IEA Secretariat or of all its individual member countries. OECD Member countries, autonomous OECD non-member countries, intergovernmental organisations, non-governmental organisations and private sector entities may participate. For more information, see our Technology Agreements page.

Energy Storage

Established in 1978, the overall objective of this Agreement is to develop and demonstrate advanced thermal and electrical energy storage technologies for applications within a wide range of energy systems, and to encourage their use as standard engineering design options.   With some 20 projects completed, activities include case studies, demonstration plants, deployment, in situ measurements and design tools.     

Signatories : Belgium | Canada | China | Denmark | Finland | France | Germany | Italy | Japan | Korea, Republic of | Norway | Slovenia | Sweden | Turkey | United Kingdom | United States | European Commission | University of Lleida | University of Technology of Warsaw |
For more information: http://www.iea-eces.org

Current Projects (Annexes)

21. Thermal Response Test for Underground Thermal Energy Storages
The overall objectives of Annex 21 are to compile TRT experiences worldwide in order to identify problems, carry out further development, disseminate gained knowledge, and promote the technology. Based on the overview, a TRT State of the art, new developments and further work are studied.


23. Applying Energy Storage in Ultra-low Energy Buildings
The general objective of the Annex is to ensure that energy storage techniques are properly applied in ultra-low energy buildings and communities. Applications of these designs are foreseen in a post-Kyoto world where total CO2 reduction is required. Proper application of energy storage is expected to increase the likelihood of sustainable building technologies. Specific objectives include, assess the potential of harnessing natural energy sources to supply building heating and cooling through energy storage; assess the use of energy storage (electrical and thermal) to optimize the efficiency of distributed generation; develop and evaluate energy storage conceptual designs suitable for specific applications.


26. Electric Energy Storage: Future Energy Storage Demand
The overall objective of this task is to develop a method or approach to calculate the regional energy balancing demand and to derive regional storage demand rasterizing the area and taking into account that there are competitive technical solutions. This objective can be subdivided into ten specific objectives: - to rasterize the whole area to typical small self-similar elements, - to identify and characterize typical fluctuating energy demand for different elements which stands for different regions and grid situations (e.g. intermeshing), - to identify and characterize typical fluctuating energy production (wind, PV) for different elements which stand for different regions and renewable energy potential (e.g. wind velocity), - to identify and characterize typical conventional energy production (gas turbine, nuclear power plant) for different elements which stand for different regions and conventional energy production, - to reduce different grid structures to a fistful typical systems and to simulate their inner intermeshing and their exterior connectivity (transport, import, export), - to derive balancing demand for each typical region, - to derive energy storage demand as a share of the total balancing demand, taken into account that the most successful economic solution will be realized, - to develop a method or model to transfer these results to other countries and regions, - to assess the technical and economical impact of energy storages on the performance of the energy system, and - to disseminate the knowledge and experience acquired in this task. A secondary objective of this task is to create an active and effective research network in which researchers and industry working in the field of electric energy storage can collaborate.


25. Surplus Heat Management using Advanced TES for CO2 mitigation
The general objective of this Annex is to identify and demonstrate cost-effective strategies for waste heat management using advanced TES. New knowledge will be generated with regards to: - The potential for advanced TES to minimize process waste heat through better process integration, enabling the use of waste heat for internal heating demands or cooling demands (via heat driven cooling). - The potential for advanced TES to cost-effectively increase waste heat driven power generation in industrial applications. - The potential for advanced TES to enable external use of heat from industrial-scale processes through effective thermal energy distribution. - The potential for advanced TES to increase the utilization of waste heat in vehicles like on-board cooling and minimization of cold-start. - The potential for advanced TES to increase the use of waste cooling (e.g., the large cooling potential associated with LNG regasification) and free cooling for comfort cooling applications. - Thus, a sub-goal of this proposed annex is to really dig into the waste heat utilization issue from a very broad perspective, and show the great potential for using advanced TES towards reaching a resource efficient energy system where waste heat (and cold) is minimized. This has a good potential for attracting a large number of participants from a variety of disciplines and levels of R&D (basic research to commercial systems).


28. Integration of Renewable Energies by Distributed Energy Storage Systems