What is landfill gas (LFG)?
Landfill gas is created when organic waste in a municipal solid waste landfill decomposes. This gas consists of about 50% methane (CH4), the primary component of natural gas, about 50% carbon dioxide (CO2), and a small amount of non-methane organic compounds. Instead of allowing LFG to escape into the air, it can be captured, converted, and used as an energy source. Using LFG helps to reduce odors and other hazards associated with LFG emissions, and helps prevent methane from migrating into the atmosphere and contributing to local smog and global climate change.