Project Image Pool
There are 430 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).
Main pillars to form a successful capacity mechanism
The figure illustrates the key design principles of an effective Capacity Mechanism (CM), structured around four main dimensions: Incentives, Efficiency, Neutrality, and Missing Money. The Incentives pillar highlights the importance of creating appropriate signals for both producers and consumers, including investment security, stable revenue mechanisms, demand-side flexibility, and ensuring availability during scarcity situations. The Efficiency dimension emphasizes the need to control overall system costs while avoiding market distortions through well-designed market mechanisms and competitive structures. Under Neutrality, the figure stresses the importance of a technology- and climate-neutral approach that maintains a level playing field while enabling the participation of low-emission technologies. Finally, the Missing Money pillar addresses the issue of insufficient market revenues by introducing additional income streams and risk-mitigation mechanisms to ensure the financial viability of energy producers and long-term security of supply.
Copyright: AIT Austrian Institute of Technology
Classification of Flexibility Mechanisms
The table provides an overview and classification of different flexibility mechanisms used in electricity systems, based on key distinguishing characteristics such as pricing structure, activation triggers, participation mode, quantity determination, and spatial scope. It illustrates how diverse approaches—ranging from local flexibility markets and demand response programs to peer-to-peer trading, energy communities, flexible connection agreements, and variable grid tariffs—can be systematically compared. Each mechanism is categorized according to whether participants can actively set prices (price input option) or are subject to predefined tariffs (price given), and whether flexibility is activated explicitly through defined products or implicitly via incentive-based signals. Furthermore, the table differentiates between voluntary and involuntary participation, as well as whether the amount of flexibility can be freely chosen or is predetermined by the system design. Finally, it distinguishes between local and national implementations, reflecting the extent to which mechanisms address geographically specific grid constraints or broader system-level needs. Overall, the table highlights the wide spectrum of flexibility provision concepts and underscores the increasing importance of both market-based and regulatory instruments in enabling grid stability, integrating distributed energy resources, and supporting the transition toward more adaptive and decentralized energy systems.
Copyright: AIT Austrian Institute of Technology
Key drivers for Grid Investment
The graphic illustrates the four key drivers for grid flexibility and reinforcement: technological developments, particularly injection peaks from PV generation and electric vehicles; policy targets for renewable energy and EV adoption, which strongly influence investment decisions; regional challenges, as grid violations occur differently depending on location, grid design, and the distribution of generation and demand; and grid utilization, which allows for higher median loading of cables and transformers. Together, these factors determine where, when, and to what extent flexibility and grid reinforcement are needed.
Copyright: AIT Austrian Institute of Technology
Measures to avoid voltage problems
One of the key challenges in managing decentralized energy systems is preventing network violations. Network violations arise not only from exceeding the thermal limits of cables and transformers, a challenge typically managed through conventional congestion management, but also significantly from overvoltage or undervoltage, particularly in low-voltage (LV) networks. Possible measures to avoid these violations are shown in this figure.
Copyright: AIT Austrian Institute of Technology
Overview IETS Task 21 Phase 3
The IETS Task 21 at a glance: A clear presentation of its development from its initiation in 2020 to Phase 3, including the activities of Subtasks 1 to 5.
Copyright: Eigene Darstellung: Moser, Energieinstitut an der JKU
New CCU/CCS value chains
Project-based analysis of new CCU and CCS value chains using a canvas.
Copyright: Gahleitner/Böhm/Moser, Energieinstitut an der JKU
Simultaneity of PV electricity generation and heat pump electricity demand for different control strategies in the PEB use case EXCESS
Comparison of the electricity demand of heat pumps under different control strategies, simulated for the Austrian EXCESS demonstration building, in relation to the available PV generation on the façade for an average winter week in February. The building under investigation represents a use case in the IEA EBC Annex 83 project.
Copyright: AEE INTEC
Duration curves of heating power for the coldest week of the year – comparison of standard control vs. MPC
One use case considered in the IEA EBC Annex 83 is a thermally activated building that was designed within the national research project HybridLSC. The thermally activated building mass allows for temporal load shifting by means of model predictive control (MPC) of the building. A comparison of the duration curves of heating power for the coldest week of the year between a standard control strategy and an MPC-based control strategy shows a significant reduction in peak loads, which is achieved without any loss of comfort for the occupants. This is essential for the optimal sizing of heat sources and forms the basis for reducing peak loads in energy networks.
Copyright: AEE INTEC
Innsbruck Campagne
PV Potential of the Facade - Project Innsbruck Campagne
Copyright: UIBK Heiß/Ochs
PV Potential Innsbruck Campagne
Colormap of the PV Potential of the district Innsbruck Campagne
Copyright: UIBK Ochs
HP Inegration
Integration options of heat pumps in districts
Copyright: OST Wemhoener
BI-Generation
Hydraulic integration of the heat pump for BI-Generation
Copyright: AEE INTEC Gradl
BI-Generation Monitoring Results
Monitoring Data of the Operation of the heat pump
Copyright: AEE INTEC Gradl
Sunbelt regions
Sunbelt countries (orange) and IEA SHC Task 65 participants (green)
Copyright: Neyer Brainworks GmbH / Dr Jakob Energyresearch GmbH
Task65 - Solar Akademie - SACREEE
The IEA SHC Solar Academy and SOLTRAIN (Southern African Solar Thermal Training and Demonstration Initiative) hosted with the support of SACREEE and SANEDI a specialized course for professionals on Solar Cooling for Sunbelt Regions at Stellenbosch Institute for Advanced Study in South Africa. A total of 46 participants from 7 countries took part, with around 8 of them participating virtually. https://task65.iea-shc.org/Data/Sites/1/publications/IEA-SHC-Solar-Update--Solar-Academy-SACREEE.pdf
Copyright: AEE Intec
Hybrid Solar Cooling Concept
As part of the SolarHybrid project, functional models for an ammonia/water (NH3/H2O) single-/half-effect (SE/HE) absorption chiller were adapted based on the previous DAKtris project and a new NH3 compression chiller was built.
Copyright: UIBK
PURIX Solar Cooling System
PURIX provides sustainable cooling technologies, leveraging R718 (water), a natural, non-flammable refrigerant, to develop environmentally friendly air conditioning and cooling systems.
Copyright: PURIX
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).
