Earth probe regeneration

Geothermal probes are to be preferred over less efficient heat pump systems with regard to the winter electricity gap.

However, only a fraction of the extracted energy flows back from the ground. Geothermal probes with drilling depths of up to 500m do not use geothermal energy but stored solar energy. In contrast to "real" geothermal energy with drilling depths of 2,000m and more, only a fraction of the energy extracted flows out of the earth's interior. In larger construction projects with borehole heat exchangers, their regeneration is essential. Thermal regeneration may also be necessary if borehole heat exchangers are used in close proximity to each other.

Hybrid collectors are ideally suited for the regeneration of geothermal probes and do not compromise the space required for electricity generation.

A selection from our reference applications:

Wohnüberbauung GWG Winterthur

In Winterthur hat die GWG bei ihrer Überbauung Hündlerstrasse 18 - 22 die Heizung saniert und auf vollständig mit PVT-Kollektoren regenerierte Erdsonden-Wärmepumpen gesetzt.

Residential and commercial development Bahnhofstrasse Wil

In Wil, a new residential and commercial development with bicycle parking was built right next to the railway station. The heating and cooling energy is provided by a geothermal probe field regenerated with PVT collectors.

Überbauung Wydäcker, Zürich

In Zurich, the Wydäcker development goes into operation: 4 apartment buildings with regenerated geothermal probe fields.

Scheme earth probe regeneration

On 14 May 2025, a well-attended specialist event on the topic of ice storage and geothermal probe regeneration took place in Niederönz in cooperation with the Lucerne University of Applied Sciences and Arts, GeoExplorers, B-Solartec and Jansen.

The presentations can be downloaded here:
Downloads Fachplanertagung - B-Solartec AG