par | Sep 21, 2022

Scientific & Technical Centre



Technical Installation






EPA Paris-Saclay, the Land Planning Public Authority for the Paris-Saclay urban area, is in charge of the development of one of a world class technology and innovation cluster. It believes that such an urban development must be in advance with respect to environmental issues, using the most innovative technologies to fulfill its high energetic and environmental objectives, in line with the COP21 global and national objectives. Its energetic strategy reflects this ambition.

Paris Saclay District Heating and Cooling network which is one of the most innovative DHC grids in Europe, is the cornerstone of this energy strategy.

For more information, the case study is available on the Construction21 website here

Total surface served

851 773 m²

Amount of connections


Type of consumers

Commercial, business & residential

Heat sources

Geothermal well + heatpumps Gas boilers

Cooling sources

Geothermal well / Cooling towers


Blueprints and technical datas

Length of Network

11 850 m

Heating Capacity

25 676 kW


Annual Heating Demand

26 282 MWh

Cooling Capacity

12 000 kW

Annual Cooling Demand

6 941 MWh

5GDHC Principles

Ambiant LOOP

Carrying thermal energy from the Energy Centre to the decentralized plant (“SSTI”), and allowing heat and cold exchanges between building clusters.


Connecting decentralized heat and cold plants to local customers. These heat and cold plants (“SSTI”), located in the basement of major buildings of the urban campus, host the heat pumps supplying simultaneaous heat and cold.


Two 700-meter-deep wells into the Albien aquifer are necessary : One pumping geothermal water the other returning it back to the Albien aquifer after extracting its heat. The Albien aquifer is a eep 30°C-water field located under the Paris region. It dates back to -145 millions year.
For more information,
please visit the project website