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IEA EBC Annex 96: Grid Integrated Control of Buildings
The energy transition requires buildings to become active, flexible components of future energy systems. With the growing share of variable renewable energy, demand-side flexibility is increasingly vital for grid stability and decarbonisation. IEA EBC Annex 96 develops digital, interoperable control concepts to unlock and scale building flexibility across electricity, heating, and cooling networks.
IEA EBC Working Group on Cities and Communities (WGCC)
The WGCC enables information and experience exchange, the identification of bottlenecks that lead to specific research questions and a direct communication with cities on their needs, to enable them to transform their energy systems. The working group is a joint initiative across several TCPs with in-depth participation of technical and non-technical (external) experts.
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 Annex 49: Low Exergy Systems for High-Performance Buildings and Communities
The objective of Annex 49 is the development of approaches for reducing the exergy demand of buildings, so as to reduce the CO2 emissions of the building stock and support structures for sustainable and reliable energy systems in the building sector. To achieve the objectives of Annex 49, the following activities have been carried out:Application of exergy analysis and providing tools, guidelines, best-practice examples and background information for planners and decision makers in the fields of construction, energy and politics Support of cost-efficient low-energy/exergy measures for renovation and new building taking into account both the residential and the service sector Promotion of exergy-related performance analysis of buildings, particularly from the perspectives of communities / regions
IEA ES Annex 50: Prefab Systems for Low Energy/High Comfort Building Renewal
Development of integrated concepts for multi-storey buildings, which enable renovations of buildings with high energy efficiency at good user acceptance during the realisation phase as well as afterwards (comfort, affordability). Relevant components: integrated solutions of roof and façade with high rate of pre-fabrication, the possibility of integrating the energy façade/roofs and energy distribution and supply.
IEA ES Task 35: Flexible Sector Coupling through Energy Storage Implementation
Task 35 of the IEA Energy Storage TCP addressed Flexible Sector Coupling (FSC) through the implementation of energy storage and examined the role of energy storage in the context of the concept of sector coupling. The demand sectors include electricity, heating/cooling and mobility. FSC was defined, examples of FSC were described and studies on the use of FSC in local and the German national energy systems were carried out.
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 41: Economics of Energy Storage
What is the value of energy storage and how can it be quantified? How can the benefits and value of energy storage be translated into promising business models? The Task will conduct a coordinated methodological assessment of the economic viability of energy storage (electrical, thermal, and chemical) in applications relevant to the energy system. This will be used to derive preferred conditions for energy storage configurations.
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 ES Task 45: Accelerating the uptake of Large Thermal Energy Storages
The aim of Task 45 is to accelerate the market launch of large-scale heat storage systems. For this purpose, numerical simulation techniques and material measurement techniques are to be improved and a material database expanded. In addition, a standardized evaluation and communication basis will be developed leading to a method for yield assurance. The methods and findings will be disseminated specifically to municipal utilities, planners and operators of district heating systems as well as decision-makers.
IEA ES Task 46: Application-oriented energy storage selection
Up to now, the energy system has been thought primarily in terms of supply – for example, through the expansion of wind or PV plants. In the future, however, planning must be based more on demand: How much energy is needed when, in what form, and with what system relevance – and which storage solutions can provide this as efficiently as possible? The goal is to develop a well-founded, practice-oriented “match-making matrix” for selecting the most suitable energy storage technology (electrical, chemical, thermal) for specific applications.
IEA ES Task 48: Thermal Energy Storage Materials
To store heat with the capacity, energy density, and power required for different applications, innovative materials are needed. In IEA ES Task 48, the focus is on materials that can store heat in various ways – through phase changes or chemical reactions. A wide range of materials is being studied and tested to determine how suitable they are for use in thermal energy storage systems.
IEA EV Task 52: EVs and Circularity
Electric vehicles have specific challenges to reach circularity, which must be identified and solved adequately. Circularity issues are relevant in all phases of the life cycle – production, use and end of life – so circularity is strongly linked to Life Cycle Assessment (LCA) of electric vehicles. Austria leads this task and is responsible for the scientific assessment of circularity in LCA. Relevant case studies for the Austrian industry are analysed and the national R&D demand is identified.
IEA EV Task 53: Interoperability of Bidirectional Charging (INBID) (Working period 2025 - 2027
This task intends to act and help to test the conformance of the upcoming ISO15118-2X amendments referring to bidirectional charging. In addition, it gives countries and members, which do not own labs or do not have a large automotive industry, the opportunity to participate in the development of interoperable bidirectional charging common and to coordinate their activities in an international framework.
IEA Electric Vehicle Technology Collaboration Programme (EV-TCP)
The Technology Collaboration Programme on Electric Vehicles (EV TCP) vision is that the electric drivetrain will be used as the predominant transportation mode in a sustainable transport system that is preferably powered by renewable energy and does not produce harmful emissions.
IEA Energy Efficient End-use Equipment (4E)
The activities of IEA 4E TCP are carried out in four platforms and joint ExCo projects. The active Platforms are: Electric Motor Systems (EMSA), Sustainable Lighting and Controls (SSL), Efficient, Demand Flexible Networked Appliances (EDNA) and Power Electronic Conversion Technology (PECTA).
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.
IEA Energy in Buildings and Communities Programme (EBC TCP)
The Energy in Buildings and Communities Programme by the IEA enables collaborative research and development projects. Thematically, it focuses on integrating energy efficient and sustainable technologies in buildings and communities.
IEA HEV TCP Task 40: Critical Raw Materials for Electric Vehicles
The production of electric vehicles and batteries requires critical raw materials. In Task 40, demand and supply are compared, based on global scenarios of the development of electric vehicle fleets, battery technologies, primary and secondary raw material potentials and recycling technologies. Potential overall ecological and social impacts of raw material and battery production are assessed.