Aéroport de Paris – Orly

Member state France
Case study Aéroport de Paris – Orly
Description Faithful to the commitments made at the Grenelle Environment Forum in 2007, Aéroports de Paris creates a geothermal power plant for heating its buildings. Two wells are dug in The Dogger, a 1.8 km depth aquifer. The water comes up at 74°C. Geothermal energy reduces carbon dioxide emission of 9000 tonnes each year.
Region>City>location Paris basin > Paray-Vieille-Poste
Owner Aéroport de Paris (ADP)
Operator ADP ORLY 
Installed capacity
( MWth)
135 MWth
Installed geothermal capacity 12 MW
DH length
 35 km (108 sub-stations)
Inhabitants connected Airport Heating and sanitary water
 Operating Temperature of the DH max temperature 105°C
Temperature of the geothermal ressource
(production – injection)
74°C – 40°C
Geothermal flow
 300 m3/h
Production of heating and/or cooling Heating + Sanitary Water
Dates of begining and end of construction 2008-2011
Administration scheme French Mining Code
Investement for
geothermal well
9M€ for the doublet system
(banks, funds, PPP…)
Banks, Funds, “Fonds Chaleur”
Amount of Subsidies
if any
Administrative permits Arrêté interpréfectoral du 26 mai 2011
Comparison with fossil energies  Spared CO2: 8200 t/year
Taxes 5,50%

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