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Building services

and energy systems

The development comprises a mix of hotel and office accommodation on the upper stories along with spacious lobby and reception spaces on the ground floor. Its massing is based on the concept two interlocking volumes. The LEED-certified system for the production of (heating and cooling) energy employs heat pumps with a natural refrigerant that are served by a 250 m deep downhole heat exchanger array.

Gruner Gruneko AG was commissioned to plan the building services and energy systems. The energy concept is based on the use of geothermal probes to heat and cool the building.

To increase planning reliability and reduce the costs of building complex heating and cooling systems that use geothermal probes or groundwater, we have developed a practical method of coupling building, system, probe and groundwater flow simulations. This enables us to model the entire building and subsoil and view them as a whole in project development activities. This innovative approach was presented at the 8th Climate Platform of the Basel Region Economy.

After four years of construction, the 78-meter-high Grosspeter Tower in Basel was officially opened at the end of June 2018. The building facade produces around 275,000 kilowatt hours of electricity per year on an area of 6,000 m2 of photovoltaic modules. 

Take a virtual reality tour in a BIM model with VR glasses and immerse yourself in the virtual reality of HVAC planning.

Further information on the zero-emission high-rise and the current use of the Grosspeter Tower.


Gruner Gruneko AG
St. Jakobs-Strasse 199
4020 Basel
Contact Person
Andreas Schmid
T +41 61 367 94 70
Andreas Schmid Leiter Gebäudetechnik Gruner Gruneko AG