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IEA ES Annex 35: Flexible Sector Coupling through Energy Storage Implementation
The aim of the IEA ES Annex 35 is to investigate and evaluate the potential of different storage technologies and configurations for the application to the sector coupling of electricity, heat and mobility sector and to draft recommendations for politics, research and industry based on the results.
IEA ES Annex 39: Large Thermal Energy Storages for District Heating
Large-scale heat storage systems will play a central role in increasing the necessary flexibility of district heating networks and enable the further expansion of renewable energies. The main objective of the Annex is to determine the aspects that are important in planning, decision-making and implementing large thermal energy storages for integration into district heating systems and for industrial processes, given the boundary conditions for different locations and different system configurations.
IEA ES Task 36: Carnot Batteries
Carnot Batteries are an emerging technology for the inexpensive and site-independent storage of electric energy at medium to large scale (> 1.000 MWh). The technology transforms electricity into thermal energy, stores it in inexpensive media such as water or molten salt and transforms the thermal energy back to electricity as required. Carnot Batteries have the potential to solve the global storage problem of renewable electricity in a more economic and ecologic way than conventional batteries.
IEA ES Task 43: Storage for renewables and flexibility through standardized use of building mass
Thermal building mass activation uses building masses to condition interior spaces, but can also function as energy storage through targeted overheating/undercooling. This storage potential can be used for local and grid-connected renewable thermal and electrical energy (Power2Heat). The project develops new content on the construction, control and business models of such storages and disseminates it as guidelines, data and on the basis of best-practice objects that have been implemented.
IEA ES Task 44: Power-to-Heat and Heat integrated Carnot Batteries for Zero-Carbon (industrial) heat and Power supply
The rise of renewable energy causes fluctuating energy production. The electrification of heat supply further challenges the electricity grid. Coupling electricity and heating with thermal storage helps to strengthen grid resilience and ensures stable energy supply. This project identifies and evaluates heat-integrated Carnot battery concepts to store thermal and electrical energy and supply electricity and thermal energy on demand.
IEA Energy Storage (ES)
The aim of the IEA Energy Storage (ES) Technology Programme is to enable integrated research, development, implementation and integration of energy storage technologies in order to optimise the energy efficiency of all types of energy systems and to promote the use of renewable energy sources instead of fossil fuels.