Out of all the fossil fuels used as a primary source of energy, natural gas has the least environmental impact. Its chief component is methane, making up approximately 90%.
The molecular structure of methane has one carbon atom and four hydrogen atoms (referred to as CH4), so that its combustion generates between 45% and 70% less CO₂ than other combustible fossils, such as coal, oil and their derivatives.
Natural gas will continue to be, at least until 2030, a necessary source to ensure the supply of the electricity market, as shown by the data from the National Integrated Energy and Climate Plan (PNIEC 2021-2030) prepared by the Ministry of Ecological Transition and the Challenge Demographic.
The absence of sulphur, heavy hydrocarbons and other impurities in its composition makes it much more environmentally friendly.
Specifically, the use of natural gas as a fuel for electrical power generation means that carbon dioxide emissions are reduced by approximately 40%, compared to a conventional coal-fired plant.