Geothermie Gräfelfing GmbH & Co. KG

Gräfelfing, Germany

GeothermalLimited company

Founded 2022

Profile last updated: October 4, 2026

About

Founded in 2022, Geothermie Gräfelfing GmbH & Co. KG is a limited company headquartered in Gräfelfing, Germany specializing in Geothermal.

Geothermie Gräfelfing GmbH & Co. KG is a municipal enterprise that develops and operates a deep geothermal heating system for the municipality of Gräfelfing near Munich. The company, now 100% municipally owned following the acquisition of Silenos Energy's shares in June 2025, plans to supply residential, commercial, and public buildings with renewable heat energy from the Malm aquifer at approximately 3,000 meters depth. The project includes hydrothermally powered district heating infrastructure exploiting Bavaria's favorable geological conditions in the Molasse Basin.

Headquarters

Gräfelfing, Germany

Founded

2022

Company type

Limited company

Products & services

Business models

B2BB2C

Value chain

DevelopmentEngineeringConstructionO&M

Locations

Headquarters

Freihamer Str. 2, 82166, Gräfelfing, Germany

Projects

Geothermie Gräfelfing

Under ConstructionHydrothermal deep geothermal with district heating network

Deep geothermal heating project to supply the municipality of Gräfelfing with district heating from hydrothermally generated heat. Two boreholes planned to depths of approximately 2,900 meters targeting the Malm aquifer. Expected production temperatures around 100°C with reinjection at approximately 55°C.

Gräfelfing, Germany