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Session Overview
Soil2Heat “Very shallow geothermal energy – an economic solution for a sustainable energy transition”
Thursday, 20/Oct/2022:
11:00am - 3:30pm

Location: B04

40 seats

Registering: Participating at this event is subject to the general terms and conditions of the European Geothermal Congress 2022 (
The access is free of charge. Please note that participating at this side event does not entitle to visit the European Geothermal Congress 2022 in full.
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Session Abstract

How do we manage a sustainable energy transition on short term?

The building sector is the largest single energy consumer in Europe, absorbing 40% of final energy, and about 75% of buildings are energy inefficient. Geothermal Heating and Cooling are highly promising in order to cover future sustainable heating and cooling demands at low costs, low emissions and high level of efficiency. Very shallow geothermal systems use the energy just below the earth's surface. These systems distinguish by easy handling and low cost implementation. In between these systems have been established as a reliable and mature alternative to other geothermal sources.

In this side-event the potential and performance of very shallow geothermal energy will be demonstrated for single residential buildings up to grid connected district heating and cooling (DHC) networks. Also typical challenges will be tackled by presenting solutions for integration in urban areas or measures to increase the performance. An open discussion about the state and perspective of very shallow geothermal energy will take place in a dedicated panel session.

About the organizers

Soil2heat is a German-Austrian cooperation network funded in the ZIM programme of the German Federal Ministry for Economic Affairs and Climate Action. We develop and provide innovative single house to grid-connected district heating and cooling solutions. As geothermal source, very shallow geothermal collector systems and their special forms (e.g. trench collectors, heat baskets) with maximum installation depth of 5 m are used. The 30 partners cover the entire value chain from research via planning and industry to energy suppliers and municipal utilities. The network is coordinated by the Geozentrum Nordbayern of the Friedrich-Alexander University of Erlangen-Nuremberg.

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Outline of the program

11:00 - 11:10 Opening & Welcome

Introduction to soil2heat

Dr. David Bertermann

Dr. Jeannette Wienke (FAU Erlangen-Nuremberg)

11:10 - 11:30 More than 1000 running installations in Europe - history, experiences and specials

Arne Komposch (RGK e.U.)

11:30 - 11:45 Experience with Low Temperature District Heating – 8 Networks with more than 350 Heat-Pumps in Schleswig-Holstein

Julia Jürgensen (Stadtwerke SH)

11:45 – 12:00 Very shallow geothermal applications in urban areas

Hubert Graf (Gratec GmbH)

12:00 - 12:15 ThermoMap Mapviewer 2.0 - tool for calculating very shallow potentials and corresponding cold district heating net

Dr. David Bertermann (FAU Erlangen-Nuremberg)

12:15 - 12:30 Coupled simulations of a DHC network with large-scale geothermal collector

Hauke Hirsch (TU Dresden)

12:30 - 12:45 Modelling the potential of very shallow geothermal installations under consideration of climate change

Thomas Schneider von Deimling (AWI Potsdam)

12:45 - 13:45 Lunch break

13:45 - 14:00 Thermo-active building systems (TABS) connected to very shallow geothermal collectors

Michael Moltinger (FH Salzburg)

14:00 - 14:15 5th Generation District Heating and Cooling (5GDHC) Networks in Germany- a survey

Marco Wirtz (RWTH Aachen)

14:15 - 14:30 5GDHC living labs in rural and urban areas

Robin Zeh (TH Nuremberg)

14:30 - 14:45 Monitoring and optimisation of large-scale geothermal collector system underneath a residential building

Mathias Schmid (TH Nuremberg)

14:45 - 15:00 Intelligent control and networking of distributed energy systems in cold district heating networks

Dr. Dirk Pietruschka (enisyst GmbH)

15:00 - 15:30 Panel discussion

15:30 Closing remarks

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