SmartGrid "Langer Graben" multi-storey car park in Schwäbisch Hall


The Langer Graben multi-storey car park in Schwäbisch Hall is currently undergoing fundamental renovation. In the course of the renovation, Stadtwerke Schwäbisch Hall plan to initially equip one of the four parking levels with 120 charging points for e-vehicles (in the future, all four levels) and to expand the existing transformer station accordingly.

Research Question

  • How could many charging points be integrated as cost-effectively as possible without major investments in the existing supply structure?
  • How could charging peak loads be avoided?
  • How could the electricity grid be stabilised by charging e-vehicles?
  • How could the charging points be distributed as efficiently as possible?
  • How could e-mobility be seamlessly integrated into public transport?
  • How can viable business models look like?


An innovative cascaded connection system with intelligent distribution boxes (for 5 charging points each) is planned for the cabling of the charging stations. This means that the cabling in the multi-storey car park can be realised much more cost-effectively and with considerably less copper than in previous installations. In addition to the controllers in the distribution boxes, a further controllers is planned for each parking level as well as a central controller in the main distribution area. This cascaded intelligence enables highly efficient charging load management, which efficiently avoids local overloads in the distribution and also ensures grid-serving operation through the connection to the Venios system (grid status forecast) of Stadtwerke Schwäbisch Hall. A possible future bidirectional use of the vehicle batteries will also be taken into account and prepared.

As a scientific partner, HFT Stuttgart will support the joint project by developing AI-based methods for predicting and evaluating charging cycles for intelligent charging load management. Monitoring will be used to analyse and optimise the efficiency and effectiveness of the methods and thus prepare them for further application. In addition, HFT will develop an innovative and intuitive mobile application for charging point booking and activation with a connection to the public transport system.

Targeted results

  • Installation and practical testing of the necessary hardware.
  • Development, connection and testing of algorithms for intelligent charging load and parking management.
  • Grid-stabilising charging of e-vehicles.
  • Monitoring and evaluation of measurement data.
  • Development of an app that enables the booking of charging points and a connection to public transport.
  • Analysis of the economic viability and development of a business model.
ManagementProf. Dr.-Ing. Dieter Uckelmann, (ZeDFLoW) Prof. Dr. Bastian Schröter (
PartnerStadtwerke Schwäbisch Hall
FundingMinistry of the Environment, Climate Protection and the Energy Sector Baden-Württemberg
Call for proposalInput 2.0
ProgrammeBWPLUS – Baden-Württemberg Programm Lebensgrundlage Umwelt und ihre Sicherung
Duration(15.11.20) 01.02.2021–31.01.2022, extended until 30.09.2022



Name and position Field Email and phone Room
Professor Centre for Sustainable Energy Technology +49 711 8926 2371 7/028
Professor for Information Logistics Faculty of Geomatics, Computer Science and Mathematics +49 711 8926 2632 2/145
+49 711 8926 2647 7/010