Inaugurated in September 2021 in Iceland, a factory sucks in ambient air to isolate the main CO2 responsible for global warming, and transform it into rock.
First freed of its impurities, the gas is transported via an underground pipeline under small gray domes.
Dissolved in water, it is finally injected 800 and 2000 meters deep underground, in the basalt rock.
The gas then becomes embedded in the small cavities of the brown rock.
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With this technique, the plant can suck up to 4000 tonnes of CO2 per year.
Figures which remain modest knowing that tens of billions of tons are emitted worldwide each year.
If the costs are high and the energy needs important, the capture and storage of C02 in the subsoil remains nevertheless one of the methods encouraged by the IPCC (the Intergovernmental Panel on Climate Change) to contain global warming.