Geothermal heat networks
Heating networks - Biomass, geothermal energy, heat recovery and cooling networks

Geothermal energy extracts heat from the subsoil and uses it to heat buildings or generate electricity.

There are several types of geothermal energy for different uses:

• High-energy geothermal energy (> 150 °C): drawn from geologically active environments, it is used to generate electricity. The only French site is located in Guadeloupe;

• Low- and medium-energy geothermal energy (between 30 and 90 °C, and between 90 and 150 °C): drawn from depths ranging from a few hundred meters to 3,000 m, this deep geothermal energy is used by heating networks;

• very low-energy geothermal energy (< 30°C): present at depths of up to a few dozen meters, this superficial geothermal energy can be used to heat small installations (individual homes, buildings, etc.),...