The GEOCO2 project studied the potential for combining CO2 storage with geothermal energy production in the Centre-Val de Loire region, using the CO2-Dissolved technology currently being developed by BRGM.
6 December 2021

GEOCO2: capturing and storing CO2 in the Centre-Val de Loire region

The GEOCO2 project assessed the potential of combining CO2 capture and storage with geothermal heating in the Centre-Val de Loire region, using the CO2-Dissolved technology currently under development. The objective is to reduce CO2 emissions in the region while producing renewable, low-carbon energy.

© BRGM

The CO2-Dissolved technology aims to reduce CO2 emissions while producing renewable, low-carbon energy. The principle is as follows: hot geothermal water is pumped up from deep aquifers to be used as a renewable energy source. The CO2 emitted by factories is captured and then dissolved in the geothermal water – after its energy has been used – to heat the factory buildings, for example. This water is then returned to the ground, in order to store the CO2 and reduce greenhouse gas emissions.

This technology, which is currently being developed by BRGM and its partners, is particularly well suited to industries with low CO2 emissions.

As part of the GEOCO2 project, BRGM cross-referenced data from industrial sites that emit more than 10,000 tonnes of CO2 a year with subsurface data concerning the geothermal potential in the area. These studies highlighted various interesting areas in which this technology could be exploited in the Centre-Val de Loire region.