the first biogas plant for the production of city gas in the Dordogne

Using local waste, this biogas plant produces enough to supply 1,800 households with city gas. A solution that makes the war in Ukraine more and more profitable.

Natural gas is in fact a fossil fuel formed by the decay of ancient organisms. It is a gaseous mixture of hydrocarbons composed primarily of methane present in certain porous rocks and extracted through drilling.

Natural gas is the third largest energy source in the world after oil and coal. Europe imports 65% of its gas consumption, mostly from Russia.

Russia is one of the two largest world producers after the United States (16.6%). (23.7%). These two countries are also the largest consumers. As a source of energy dependency and financial pressure, Russian gas is also one of the uses in the war in Ukraine.

In this context of instability, biogas currently accounts for only 2% of French gas consumption. A methane gas but identical to natural gas, quite easy to produce, renewable and from local resources. The current crisis means that methanated biogas is gradually becoming as profitable as imported gas.

While eight methanisers already produce gas from manure for local consumption on certain farms in the Dordogne, the first methaniser is located in Saint-Antoine de Breuilh near Bergerac and supplies the municipal gas network. The sixth French site designed by CVE, a company specialized in Marseille that wants to renew the experience near Périgueux. And he plans to set up around sixty across France by the end of the decade.

It works with 17,000 tons of raw materials collected by truck within an hour’s radius from the site. Mainly leftover grapes from wineries, paper waste from Lalinde and greasy food leftovers. So many products that, like in a cattle stomach, digested by anaerobic bacteria (without oxygen) are converted into methane on the one hand and inert residues usable as agricultural fertilizer on the other.

Of these 17,000 tons, we produce enough to supply 1,800 households with gas for a year. Modest figures for achieving energy autonomy, but the potential is enormous and still untapped. CVE estimates that with generalized methanation we could produce 30 to 40% of Europe’s gas needs.

Half a dozen similar projects are already being studied in the Dordogne and by 2023 there could be around fifteen public or private methanisers in the department.

It remains, of course, to work amicably with the neighborhood, which, as with wind turbines, is not always satisfied with the proximity of these facilities. A compromise that must be found in order not to keep running headlong into the ecological wall with the burning of fossil fuels.

Finally, if the experience tempts you, you can make your own home methanizer yourself. It allows you to recycle your food waste and produce a gas that can be used on a stove, at the same time as a liquid fertilizer for the garden… You will find many examples of the realization of these systems, widespread in India or India are Asia by typing “biogas, biogas or individual methanizers” into a search engine.

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