Waste Management is one of the leading providers of waste and environmental services in North America. The company recovers and processes methane gas that is naturally produced by decomposing waste in landfills into an energy source for generating power. It also serves more than 20 million residential, industrial, municipal and commercial customers. Waste Management operates several transfer stations, active landfill disposal sites, recycling facilities and independent power production plants. In addition, the company provides solid waste collection services. It has one of the largest trucking fleets in the waste industry, as well as collects over 74 million tons of solid waste every year. Headquartered in Houston, Waste Management operates single-stream recycling facilities, as well as handles landfill gas projects.