At the beginning of 2023, our French partner Valotech Energies put into operation an energy source unit with a total electrical output of 320 kW, which is located in one container.
In this case, the fuel is landfill gas, which is naturally produced in landfills due to the decomposition of biological components. This gas is highly environmentally harmful due to its high methane content. However, due to its methane content, it can also be used for energy purposes. By burning it in a source unit, a municipal waste landfill can produce approximately 2,650 MWh of electricity per year. This energy is fed into the grid and represents a significant source of income for the landfill operator.
However, due to the nature of landfill gas generation, its composition can vary. For example, in a French landfill, the methane content is low, ranging from 30 to 40%. The optimal concentration for combustion in a gas engine is at least 50%. At TEDOM, we have extensive experience in landfill gas utilization. Over the years, we have supplied over 120 source units to landfills worldwide, the first of which was installed in 1997. We also own and operate a number of these facilities in the Czech Republic. Therefore, we adapted the gas route to this lean mixture, ensuring the device could operate smoothly even with low methane concentrations. The importance of this system is not only energy-related but also ecological, as it reduces methane leakage into the atmosphere.
Selected references and case studies