Paris-Charles de Gaulle: Terminal 1 heated by local energy

Beneath the runways of Europe’s second-largest airport, a deep doublet draws water at 71 °C from a depth of 1,810 m to supply Terminal 1 with low-carbon heat, continuously.

CLIENT

Groupe ADP · Terminal 1

LOCATION

Roissy-en-France - Val-d'Oise (95)

SECTOR

Airport infrastructure

SOLUTION

Drilling & Works - deep geothermal energy

Explore the deep geothermal drilling site

What this project delivers

80 GWh/year

of heat produced

35 %

of the terminal's heating needs met

19 000 t

of CO₂ avoided each year

Have a project in mind?

A building that stays comfortable in summer and winter, with energy costs under control? Let’s assess the geothermal potential of your site together.

Let’s talk about your project

Devenez actionnaire de la géothermie

Arverne développe une dizaine de projets comme celui-ci partout en France. Une augmentation de capital est ouverte aux particuliers pour accélérer leur déploiement.

THE PROJECT IN PICTURES

Deep geothermal drilling site.

Two wells drilled to 1,810 m in the Dogger aquifer.

Context

France's largest airport, Paris-Charles de Gaulle has begun decarbonizing its infrastructure. For Terminal 1, Groupe ADP chose to tap the natural heat of the Dogger aquifer, which lies beneath the entire Île-de-France region. Arverne carried out the drilling, which was completed in February 2025 within the planned three-month schedule.

Key challenges

Replacing a major share of the terminal's fossil-fuel heating with renewable energy.
Ensuring a continuously available heat supply, without disturbance once in operation.
Drilling deep wells at the heart of a fully operational airport.

Our work

A geothermal doublet, made up of one production well and one injection well, draws water from the aquifer and returns it once its heat has been extracted.

Two wells drilled to 1,810 m in the Dogger aquifer.
Water extracted at 71 °C and reinjected at 45 °C, 1,600 m from the extraction point.
A three-month worksite involving nearly 75 people.

CLIENT TESTIMONIAL

“Installing geothermal energy at Paris-Charles de Gaulle will give us access to a renewable, non-polluting energy source. It is also a cost-effective energy that causes little disturbance during operation.

The benefits don't stop there! The energy produced will be available all year round, independent of weather conditions, and its supply will be guaranteed and controlled."

Marc Donnart

Infrastructure and Energy Project Manager, Groupe ADP

Je veux investir

Donnez du sens à votre épargne. Arverne ouvre son capital pour financer de nouveaux projets de géothermie en France.

Have a project in mind?

Un site à décarboner, une facture d'énergie à sécuriser ? Parlons du potentiel géothermique de votre bâtiment ou de votre parking.

KEEP EXPLORING

More Arverne achievements

Galeries Lafayette

Damaged by fire in 2016, Pau’s department store will reopen at the end of 2027. A single geothermal installation will provide its heating, cooling and domestic hot water.

Safran Aircraft Engines

At Villaroche, Safran’s engine plant will replace the gas used at one of its largest production sites with local, low-carbon heat drawn from a depth of 1,650 m.

Crédit Agricole Pyrénées Gascogne

At its headquarters site in Serres-Castet, CAPG is replacing its gas and wood-fired boilers with a system that produces heating and cooling from subsurface energy.