Production of green gas from urban waste in Lorient
Last modified by the author on 18/03/2021 - 20:27
- Year of commitment : 2019
- Address 1 - street : INZINZAC-LOCHRIST, France
- Diameter : 700
- CO2 Impact : The biogas deposit at the Kermat site enables Lorient Agglomeration to produce 7 GWh of renewable gas per year, thus supplying 70% of the annual gas consumption of the municipality of Inzinzac Lochrist and avoiding the emission of 1 500 tons of CO2.
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3 000 000 €
- Builder
Waga Energy - Manager / Dealer
Lorient Agglomeration
Progress Status
Delivered
Data Reliability
Self-declared
Funding Type
Public
Sustainable Development
- Reduce our carbon footprint by recovering our waste
- Solar panels to operate the installation
Testimony / Feedback
Testimony of Laurent LE DEVEDEC, Energy Manager for the LORIENT AGGLOMERATION community
“The scarcity of outlets in the Breton regional territory makes the Kermat ISDND an essential treatment tool for so-called“ ultimate ”waste that we could not avoid. The prioritization of waste treatment methods towards energy recovery, however, will not be able to divert all deposits. It is certain that a residual part will remain intended for landfill. Thanks to its operating life, Kermat's ISDND will make it possible to respond effectively to this challenge. "
“The Kermat ISDND biogas project for biomethane was the subject of a broad consensus within the city during its presentations because the project was of interest for the preservation of the environment but also economic with the revenues linked to the sale of biomethane and the reduction of the TGAP. Upgrading our biogas into biomethane improves our energy mix and the reduction of our greenhouse gas emissions. The production covers 80% of the consumption of the municipality of Inzinzac Lochrist or 80% of the consumption of our bus fleet. It should be noted that this project also made it possible to initiate the vehicle gas reflection in our territory, a public distribution station will also see the light of day and will make it possible to supply the carriers but also our household refuse dumpsters. A reflection is also underway concerning our bus fleet. "
Source: GRDF REX ISDND
Governance
Lorient Agglomeration
Regional Authority
Waga Energy
Lorient Agglomeration
Public
This project is supported by Lorient Agglomeration, with the support of the Regional Council of Brittany and ADEME. Lorient Agglomeration is one of the only communities to perform its own recovery of this non-hazardous waste.
This project represents an investment of 3,000,000 €, financed by Lorient Agglomeration, with the help of the Brittany Region and ADEME. Ultimately and for a period of 15 years, the sale of bio-methane will generate revenue for the community estimated at 700,000 euros per year, to which is added an annual valuation premium of 50,000 euros.
In addition to being virtuous, this innovative and ambitious solution is also economically very profitable for Lorient Agglomeration. In addition to the sale of the gas produced to GRDF, it involves the reduction of the general tax on polluting activities (TGAP) which should make it possible to reimburse the initial investment in three years.
The cost of producing biomethane from ISDND is one of the lowest production costs in the sector.
Sustainable Solutions
- 60,000 tonnes of waste stored per year
- Biogas: 45-50% CH4 | 0-3% O2 | 4000 ppmv H2S
- Distance from the network before works: 6 kilometers
- Existing recovery solution: evaporation of leachate
- Unit capacity: 15 GWh / year
- Energy/climate :
- Circular economy
- Waste management
- Renewable energies
WAGABOX®
The buried waste decomposes and ferments, producing a biogas rich in methane, but also composed of carbon dioxide, nitrogen, oxygen and impurities which make its reuse very difficult.
The result of ten years of development, WAGABOX® is a breakthrough technology for the recovery of biogas from landfill waste. It combines two purification processes: membrane filtration and cryogenic distillation. Membrane filtration removes carbon dioxide (CO2) and impurities contained in the biogas from the waste. The gas is then cooled to cryogenic temperature to separate the methane (CH4) from the oxygen (O2) and from the nitrogen (N2).
Whatever the composition of the raw biogas, WAGABOX® provides 98% pure biomethane, compatible with the injection criteria of network operators. WAGABOX® recovers 90% of the methane contained in the waste biogas, guaranteeing an energy yield three times higher than solutions consisting of burning gas to produce electricity. Biomethane is easily stored and transported using existing gas infrastructure.
Exclusive to Waga Energy, WAGABOX® technology, patented worldwide, is today the benchmark solution for the recovery of biogas from landfill sites.
Key figures on the Kermat (Lorient-Agglomeration) site in Inzinzac-Lochrist (Morbihan):
Waga Energy currently operates this unit on behalf of Lorient Agglomeration. The Waga Energy solution is used in 10 of the 11 ISDNDs that inject biomethane in France.
More information: https://waga-energy.com/
Photo credit
Waga Energy