Joint excursion by GFZ and EWP 

21 October 2022, 10:00 am to 15:00 pm

– Guided geoenergy lab tour at GFZ Potsdam and the city of Potsdam on the way to geothermal heat supply –

10:00 am – 12:00 pm   Guided geoenergy lab tour (GFZ)

Helmholtz Centre Potsdam – German Research Centre for Geosciences GFZ Potsdam has a highly developed, interdisciplinary laboratory infrastructure that addresses various scientific issues in basic and applied research. Sophisticated apparatus and equipment are designed for a wide range of applications. The Thermal Petrophysics Lab produces data of thermal properties of rocks, minerals, geo-materials and cement. The Laboratories for Geothermal Rock and Fluid Physics allow to characterize and parameterize physical rock and fluid properties and a Mechanical Testing System (MTS) can analyze hydraulic and mechanical rock properties of geo-materials – all under simulated in situ conditions of pressure and temperature of up to 4 to 10 km of depths. The Fluid Lab offers instruments for experiments and measurement facilities designed to characterize, analyze, and monitor processes of geothermal fluids. Another focus is on the kinetics of gas hydrate formation and decomposition and their influence on the physical properties of sediments.
A guided tour presents the scientific work in the laboratories, which are also opened to international guest scientists.

12:00 pm – 13:00 pm    Lunch at GFZ

13:00 pm – 15:00 pm   Potsdam on the way to geothermal heat supply (EWP)
Deep geothermal energy is to contribute to the decarbonization of Potsdam’s district heating in the future. By 2050, the state capital wants to reduce its CO2 emissions by 95 percent. The local utility Energie und Wasser Potsdam (EWP) produces a large part of the energy used in the city and wants to set the course for geothermal energy with a pilot project to supply a residential area in the centre of Potsdam. The project will be presented during an on-site visit to the drilling site in preparation.

Max. 20 participants

Geothermal energy use at the Humboldt Forum Berlin – complex underground and complex energy concept 

21 October, 10:00 am – 12:00 pm


The Humboldt Forum in Berlin-Mitte has been hosting cultural exhibitions and events since 2020. Architecturally, it is modelled on the former Berlin City Palace, but in terms of energy it is more innovative and relies heavily on geothermal energy in conjunction with borehole heat exchangers and large heat pumps for heating and cooling. In implementing the system, which was planned by Geothermie Neubrandenburg, the use of geothermal energy had to be harmonised with other forms of energy and a complex underground infrastructure. The energy concept of the Humboldt Forum Berlin will be presented in an excursion.

Max. 20 participants

Experience geothermal energy – best practice near-surface geothermal energy

21 October, 9:00 am – 15:00 pm

As part of the excursion “Experience geothermal energy – best practice near-surface geothermal energy”, current construction sites and buildings already in operation in the Berlin area will be visited. The technology for exploiting geothermal energy is primarily based on geothermal sensors.

At the beginning, the excursion participants will receive an introduction to the projects and special features of the German geothermal energy market as well as insights into current developments and trends.

During the 4- to 6-hour bus excursion, there will be sufficient time for participants to discuss current issues and debate the European geothermal market.

The excursion will be led by Dipl.-Geol. Rüdiger Grimm and Dipl.-Ing. Christian Lumm from geoENERGIE Konzept GmbH, a company of the ENGIE Group.

Protective equipment (helmets and safety waistcoats) will be provided, participants are required to bring sturdy footwear.

Max. number of participants: 20