Landfill Gas

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Created during the decomposition of organic substances, landfill gas consists of methane, carbon dioxide, and nitrogen. The controlled collection and combustion of this problem gas is an indispensable step in the modern operation and re-cultivation of a landfill site. In addition, the high calorific value of landfill gas makes it a viable fuel for gas engines that can be effectively used for power generation. With more than 25 years of experience in the combustion of landfill gas throughout the world, GE’s Jenbacher landfill gas engines provides an ideal solution for using your waste gas as an energy source.

How It Works

Municipal waste contains about 150 to 250 kg of organic carbon per ton. These substances are biologically degradable and are converted by microorganisms into landfill gas. Stable, anaerobic methane fermentation begins one to two years after the waste is deposited in the landfill.

Following a simple rule of thumb, 1 million tons of deposited municipal solid waste will produce landfill gas over a twenty-year period—an amount sufficient to fuel a gas engine capacity of 1 MW.

  • Perforated tubes are drilled into the landfill body and interconnected by a pipe work system.
  • Using a blower, the gas is sucked from the landfill, compressed, dried and fed into the gas engine.
  • In most cases, the generated electrical power is fed into the public grid.
  • Since there is no buyer for the heat output in most cases, the thermal energy could be converted into further electrical power.

Features & Benefits

Jenbacher landfill gas engines are specially designed to run at full load with high efficiency, despite a low heating value and fluctuations of gas quality and pressure. High quality engine parts resist impurities that usually appear in this type of fuel.

  • Mitigation of greenhouse gas (methane) and possible carbon monetization
  • Revenues for power production, when fed into the public grid
  • Alternative disposal of a problem gas while simultaneously harnessing it as an energy source
  • Low weight containerized units that are easy to move and adjust to changing project capacity
  • Smooth operation despite low heating value and fluctuations in gas composition and pressure
  • Standard electrical efficiency of up to 42% and up to 90% in the case of combined heat and power
  • CL.AIR integrated emission control solution complies with country-specific standards

Contractual service agreements include specific preventive maintenance.

Contact Us

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