Station 1 – SEED:

With the SEED office building, STRABAG Real Estate is constructing a modern, state-of-the-art workspace.

Green roofs, wall surfaces, and balconies to minimize the overheating effect, resource-saving geothermal heating and cooling independent of fossil fuels, photovoltaic systems for operating power, use of recycled materials and resource-saving building materials, and green outdoor facilities with high climatic comfort, promoting air circulation and targeted shading are just some of the factors of modern sustainable building culture implemented at the SEED site. The entire building is being planned in accordance with EU taxonomy criteria. In addition, DGNB and Greenpass sustainability certifications in gold are being sought.

The building is part of the European research project RECOIN (supported and funded by: Geothermica EU Project 731117, the Swiss Confederation, the Swedish Energy Agency, and the Federal Ministry for Economic Affairs and Energy of Germany). The project is being supervised in Germany by Prof. Dr. Peter Bayer (University of Halle) and BFU GmbH (dibauco GmbH), Munich. At the Frankfurt site, a real-time control system is being developed and optimized for the optimal use of geothermal underground coupling. Fiber optic monitoring of underground temperatures and fully controllable probe circuits enable the adjustment of building requirements and geothermal systems for heating and cooling.

Mr. Schütz (STRABAG Real Estate) and Mr. Lehr (Geotechnik Lehr) will present the project on site.

A coffee break will be provided by the host, STRABAG Real Estate.

Further information: https://seed-office.de

https://recoin.geo.uni-halle.de

https://cordis.europa.eu/project/id/731117/reporting/de

Station 2 – Rebstockbad:

The site of the new Rebstockbad building is home to a 1,060-meter-deep research borehole sunk in 2023, which has provided new insights into the geothermal properties of Frankfurt's subsoil (Dr. Rumohr, HLNUG, will report on the results on site). In 2024, GICON Resources conducted a feasibility study that examined the possibilities for utilizing the geothermal potential at the site. Since January 2025, GICON, in collaboration with ESP Weimar and Geotechnik Lehr, has been planning concrete measures for supplying the Rebstockbad with geothermal heat energy. The geothermal plant combines the geothermal use of three different depth ranges (100 m, 400 m, and 800 m), including the research well, for the production of sustainable thermal energy. In November 2025, drilling work for the installation of 399 m deep EWS will be underway.

Further links: https://www.hlnug.de/themen/geologie/erdwaerme-geothermie/mitteltiefe-geothermie/forschungsbohrung-frankfurt

Start: SEED, Pariser Str. 5, Europaviertel, 60486 Frankfurt am Main

End: Zum Rebstockbad 7, 60486 Frankfurt am Main

Cost: €30

Maximum number of participants: 40 people