CityStore - Sondierung des wesentlichen F&E-Bedarfs zur Optimierung von städtischen Energiespeichern in integrierten Energiesystemen

CityStore pursues a first-of-its-kind, innovative approach on spatial location of storage needs and potentials. This includes the evaluation of concrete challenges and prerequisites as well as the identification of useful storage technologies and capacities. Model calculations for the model cities Graz and Weiz will be carried out. If, and to which extent, the results can be generalized will be investigated in the Follower Region South Burgenland. The results should enable optimized planning and realization of urban energy storage facilities – thereby enabling targeted investments in energy infrastructure to achieve (local) climate and energy targets.

Short Description


Project granted, project start 09/2019

Starting point / motivation

The utilization of urban energy storage plays an important role in the implementation of the energy transformation - it must be known how much and which storage facilities are needed and what potential is available.

The implementation of the energy system transformation is one of the central challenges of the coming decades. At the same time, the expansion of fluctuating generation means more storage demands.

As the degree of urbanization increases, the demand for energy and resources is increasingly concentrated in conurbations, which calls for local approaches. While conventional storage facilities (hydro-storages, gas storage facilities) are more likely to be found in rural regions, it remains to be seen what contribution urban storage solutions can make.

The central question of CityStore is therefore: "Where should storage systems be installed in urban areas and what can they contribute to the entire energy system?"

Contents and goals

Previous approaches to assess storage requirements have been limited to aggregated statements, individual domains and hardly permit spatial location.

The project therefore pursues a holistic approach to urban energy systems. This includes the evaluation of the concrete challenges and prerequisites for the location of spatial storage potentials. From a system-relevant point of view, it will be determined which storage technologies, services and capacities (short-term vs. long-term) make sense for characteristic locations.


Methodologically, qualitative and quantitative analyses are planned for this purpose. With the involvement of relevant stakeholders, it will be identified which data/tools are available or required for spatial analyses of storage demand and potential (e.g. electricity, heat, P2G solutions).

Furthermore, requirements (e.g. available technologies, techno-economic aspects, prosumer, etc.) for future urban energy systems will be collected. Suitability and competition of different storage solutions will be investigated by means of energy system model calculations for Graz and Weiz. In the selection of the use cases, a special focus was placed on dynamic regions in Austria.

The transferability of the findings will be checked and validated by means of the Follower-Region Südburgenland. In addition, necessary framework conditions will be analyzed, and suitable business models will be developed to support the integration of energy storage systems in urban areas.

Expected results

Expected results are an elaborated catalogue of requirements and, based on this, a guideline for the identification and utilization of urban storage potentials. This includes the optimization of these potentials for the (intermediate) storage of electricity peaks, surplus electricity and heat through sector coupling. In addition, the necessary future development steps and the essential R&D requirements will be identified, and corresponding follow-up projects outlined.

The methods/approaches (further) developed within the framework of follow-up projects should enable the compilation of a "storage potential register" with location suitability and profitability analysis for a wide variety of storage technologies.

Project Partners

Project management

AIT Austrian Institute of Technology GmbH (AIT)

Project or cooperation partners

  • Grazer Energieagentur GmbH (GEA)
  • Weizer Energie- Innovations- Zentrum GmbH (WEI)

Contact Address

Gerhard Totschnig
Electric Energy Systems, Center for Energy
AIT Austrian Institute of Technology
Giefinggasse 4
A-1210 Wien
Tel.: +43 (505) 50 6213