Solar Thermal and Geothermal - SGT -

The Solar Energy and Geothermal group focuses on solar and near-surface geothermal energy. Their research approach covers topics from the development and optimisation of individual components to the integration of such into complex energy systems. Both, thermal and electrical problems are considered with their interplay being investigated.

The main work focuses are:

  • Integration of solar and near-surface geothermal energy into energy systems
  • Interaction of volatile sources and consumers with power and heat grids
  • Intelligent power grids (smart grids)
  • Development of innovative sensible heat storages
  • Development of solar and PVT collectors
  • Quality assurance for geothermal heat sources
  • Innovative geothermal heat sources and their applications (e.g. CO2 geothermal probes).

Head of Group:
Dipl.-Phys. Lars Staudacher
Walther-Meißner-Str. 6
85748 Garching
Tel.: +49 89 329442-41
Fax: +49 89 329442-12

Deputy Head of Group:
Dipl.-Ing. Hanne Karrer
Walther-Meißner-Str. 6
85748 Garching
Tel.: +49 89 329442-48
Fax: +49 89 329442-12

Services & Equipment


  • Development of thermal energy system components (thermal storages, low-temperature heating systems, solar collectors, PVT collectors, high-temperature thermal insulation)
  • Independent component testing
  • Planning support and metrological monitoring for demonstration projects
  • Non-invasive analysis of PV systems
  • Thermal response testing for geothermal probes
  • Validation of thermal response test devices
  • Dynamic simulation (e.g. with TRNSYS, Dymola, Polysun, ANSYS)
  • Simulation of power grids
  • Forecasting of electrical consumers and sources
  • Modelling of smart grid components (e.g. converters, batteries)
  • Plausibility checking, management, and visualisation of large data volumes and time series
  • Development of energy concepts based on renewable energies and (seasonal) storage of heat and electricity
  • Economic feasibility studies


  • Solar testing rig and tracker
    • Thermal power measurement of collectors up to 160 °C
    • Thermal and electrical power (up to 1000 W short-term) of PVT collectors
    • Biaxial tracking
  • Electrical storages and grids
    • District storage 72 kW and 330 kWh incl. weather station (Epplas/Hof)
    • Electrical load and generation measurement (PV) via first-generation smart meter in about 30 participant households
  • Testing centre Arzberg
    • Battery test site with 20 kW DC power supply and sink
    • Weather station with direct radiation sensor and SkyCam
    • About 50 kWp PV generators using different module technologies
    • Redox flow battery cluster with 90 kW and 390 kWh
  • Thermal response test (TRT)
    • Mobile measuring equipment for the determination of thermal subsurface properties (undisturbed ground temperature, thermal conductivity of the subsurface, thermal borehole resistance)
    • Application: Coaxial probes, single, and double U-probes, each between 30 and 200 m in length
  • Testing device for TRT instruments
  • Climatic chamber with artificial snowmaking
    • Snowing of areas up to 1 m2
    • Conditioning of large parts down to -20 °C
  • Thermal conductivity measurement
  • Thermal imaging camera

ZAE Bayern

We conduct applied research at the interface between basic science and industrial application. Our methods and systems aim to achieve CO2 neutrality through the intelligent and efficient use of renewable energies.

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