Landfill gas is a mixture of gases produced when organic waste decomposes in a landfill. This process occurs anaerobically, meaning it happens without oxygen. The primary components of landfill gas are methane and carbon dioxide, but it can also contain trace amounts of other gases. Landfill gas can be captured and used as an energy source, helping to reduce greenhouse gas emissions. By harnessing this gas, facilities can generate electricity or heat, contributing to renewable energy efforts. Proper management of landfill gas is essential for minimizing its environmental impact and promoting sustainability.