Posted Sep 29, 2022, 11:00 AM
The Ecocir program, mobilizing 22 million euros of investments at this stage and 19 partners in Noyant-Villages, in Maine-et-Loire, has just been inaugurated. Additional investments are already planned.
Started in 2017, this drawer project, coordinated by the engineering firm Incub’Ethic, aimed to recover the waste heat (140,000 megawatt hours available per year) from the Salamander energy recovery unit, processing 119,000 tonnes per year of waste. residual household items in Lasse. This incineration plant, managed by Veolia for the inter-municipal association for the recovery and thermal recycling of waste from Anjou (Sivert), also produces 65,000 megawatt hours of electricity per year. Le Sivert is studying, by 2026, the project to increase the capacity of the plant to 200,000 tonnes with a second line of furnace and a hydrogen production unit.
2,500 tons of tomatoes
Fatal heat is therefore now recovered thanks to a hydrocondenser which heats the tomato greenhouses set up by three market gardeners from Nantes grouped together in the Ydeal company and developing the “Le Potager de Jade” brand. The unavoidable energy recovered currently represents 15 gigawatt hours per year and will eventually rise to 45 gigawatt hours per year.
In total, the operation has made it possible to plant 110,000 tomato plants since 2021 for a production of 2,500 tonnes per year (6,000 tonnes eventually). Some 80 jobs have been created and 100 will be in the near future. For the moment, 4.1 hectares of greenhouses have been deployed but the surface must be increased to 11 hectares for an investment of 15 million euros. Note that Ecocir makes it possible to limit the general tax on polluting activities (TGAP) paid by the Sivert.
NGV-BioGNV station
Since the greenhouses cannot be supplied with waste heat during the annual technical shutdowns of the Energy Recovery Unit (UVE) in Lasse, one month a year, the Zac Salamandre (30.2 hectares) has been connected to the gas network. This gave rise to a CNG-BioGNV station project (1.2 million euros), the construction of which has just been completed. This project is led by the Syndicat intercommunal d’énergies de Maine-et-Loire (Siéml) and the community of communes Baugeois-Vallée (CCBV). The station is accessible 24 hours a day to supply up to 25 heavy goods vehicles each day.
Two methanizers
The last part of the project concerns the construction near two methanization units planned for 2023 and still at the appraisal stage. They are carried respectively by the companies Noyant Bio Energies and by Baugé Agri Méthane, owned by 34 farmers in the area. The objective is to recover 47,700 tons of inputs in total and thus produce 242 cubic meters per hour of biomethane, which will supply the CNG station located nearby.
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