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Kummler+Matter EVT

Swiss Federal Institute of Technology Lausanne (EPFL)

EPFL asked Bouygues Energies & Services to manage and undertake the complete renewal of its heating and cooling infrastructure. Their goal: moving away from fossil fuels towards 100% renewable energy. In its capacity as general contractor, Bouygues Energies & Services was responsible for all aspects of the project, from design to implementation.

Facts and figures

Client Swiss Federal Institute of Technology Lausanne (EPFL)
Location Lausanne
Trade Electricity, HVAC, Security & Automation, Photovoltaics
Project duration 2019–2021
Order amount CHF 60 million


Complete renewal of thermal infrastructure:


  • Refurbishment and expansion of thermal power station
  • Construction of a new pumping station
  • Construction of a new lake pipeline
  • Strengthening of the hydraulic network
  • Strengthening of heat and cooling distribution
  • Construction of a building for the future data centre


The heart of the system is a thermal power station, which was refurbished and expanded to accommodate four heat pumps with a total capacity of 24 MW, as well as two emergency gas boilers. A new structure on the building houses a data centre, the roof and façades of which are covered with photovoltaic panels.


A new pumping station and a new lake pipeline were constructed on the shores of Lake Geneva, doubling the pumping capacity of the installations serving both the EPFL and the University of Lausanne to 2700 litres/second.


In addition to these major works, the hydraulic network was expanded through the construction of new pipelines. The heat and gas distribution networks have also been reinforced.

yES Magazine

More information about this project can be found in our article in our yES Magazine (available in german, french and italian).


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