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Energy for your sustainable properties.

In an era where resources are becoming increasingly scarce, the optimal use of available space is crucial for sustainable real estate projects. This not only pertains to the spatial development of the subsoil for underground parking and storage but also its use as an energy supplier and storage unit.

Near-surface geothermal energy, coupled with modern heat pumps, provides a cost-effective, low-maintenance, and virtually emission-free energy supply. It also leverages local resources like heat and cold and is consistently available, making it feasible at virtually any location. By drilling deep boreholes of up to 400 meters, the natural geothermal potential of your property is harnessed with high efficiency, actively aiding in the decarbonisation of energy supply.

Technical brochure
Geothermal Energy (Only available in German)
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Application.

We provide the following geothermal system solutions:

  • Deep geothermal probes adjacent to and below structures
  • Ground-contact activated concrete components
  • Diaphragm walls
  • Pile foundations
  • Floor slabs
  • Utilisation of thermal groundwater through extraction and absorption wells

Everything from a Single Source

In addition to constructing geothermal plants, we offer all the essential planning services, preliminary investigations, and necessary official procedures from a single source. Our support ensures the seamless execution of your project, from the initial design phase to its final commissioning.

Advantages of Geothermal Energy.

  • Secure supply: Ensures long-term access to geothermal resources
  • Independence: Not affected by the fluctuating prices of fossil fuels, seasons, or variability in wind and sunlight
  • Flexibility: Provides heating in the winter and cooling in the summer
  • Sustainability: Generates no noise or particulate emissions; offers a regenerative, decentralised energy source at the property location
  • Economical: Combines specialized civil engineering with geothermal energy from a single provider

Basics.

Standards and Regulations:

  • Execution in compliance with DVGW worksheet W 120-2 for geothermal energy
  • DIN 18301 - Drilling work
  • VDI 4640 - Thermal use of the subsurface
  • Execution according to project-specific procedural instructions
  • All processes adhere to the DIN EN ISO 9001 certified quality management system of PORR Special Civil Engineering GmbH
  • Standard excavation diameters are 152/127 mm and 168/140 mm

Quality Assurance can be maintained by:

  • Preparing drilling logs during the entire drilling process
  • Retaining samples of the drill cuttings and the grouting suspension
  • Conducting pressure and flow tests

Design Variations.

We implement the following design variants:

  • Drilling using hollow augers
  • Direct fluid flushing drilling (water with flushing additive agents)
  • Hammer drilling with air flushing