Decarbonization of three apartment buildings in Gex - 4,300 sqm

Background

In 2023, the Gex condominium “Les Vertes Campagnes”, located at an altitude of 600 meters, called on Accenta to replace two faulty and energy-consuming gas boilers.

To reduce its energy bills and its carbon footprint, the owners’ association wants to power its 3 buildings with an energy mix mainly composed of renewable energies.

Customized solutions from Accenta

The technical solution

The field study confirms the possibility of tapping the geothermal energy available under the buildings to be decarbonized.

The operation requires the installation of the following modules:

✅ A 3,400 m field of geothermal probes (17 probes 200 meters deep)

✅ Solar thermal panels on the roof to recover surplus renewable solar energy present in summer, and geostore it in the basement for use the following winter

✅ 1 water/water geothermal heat pump (PAC)

✅ 1 auxiliary gas boiler providing 9% of heat production

✅ 1 buffer tank for domestic hot water and heating water

The financial solution

The installation is accompanied by a third-party financing offer formulated by the joint venture Aïden, created by Accenta, Eren and Idex.

It consists of taking charge of all the expenses, in return for a reimbursement in the form of monthly payments lower than the initial energy costs.

Benefits for the customer

The use of geothermal energy driven by artificial intelligence has radically transformed the relationship with energy of co-owners.

✅ A drastic reduction in energy consumption (-77%) and CO2 emissions (-91%)

✅ Monthly repayments 10% lower than the costs of the reference gas solution

✅ A heat and cold reserve available during consumption peaks thanks to the geostorage system

✅ A noticeable improvement in the thermal comfort of residents

✅ A few decades ahead of the deployment of climate standards

✅ An increase in the real estate value of the equipped site (green value) and an eco-responsible image that is rewarding for the project owner