Like wind and solar, landfill gas is a renewable source of energy endorsed by the U.S. Environmental Protection Agency as an alternative to fossil fuels. It’s produced as waste naturally decomposes inside a landfill. Once captured, the gas is filtered and compressed and can be used to fuel an engine or a turbine to generate electricity. At the new Renewable Natural Gas Facility, the landfill gas will be further processed to produce pipeline-quality natural gas.
At the landfill, on-site emissions will be reduced by the Renewable Natural Gas Facility. Since the gas will be treated, rather than burned onsite, Waste Management anticipates about a 60 percent reduction in emissions of carbon monoxide, nitrogen oxides, and particulate matter.
The facility will be designed to process approximately 3,500 standard cubic feet per minute of incoming landfill gas, equivalent to 105 million British thermal units per hour. This is as much gas as it takes to fuel about 400 of Waste Management’s CNG collection trucks each day and represents more than 10% of the natural gas that is used in Waste Management’s entire existing CNG fleet.
Waste Management of Illinois currently has more than 100 CNG trucks in its fleet displacing about one million gallons per year of diesel fuel.
The Milam Renewable Natural Gas Facility will be the company’s third plant to convert landfill gas to natural gas. In California, Waste Management has collaborated in the world’s largest plant to convert landfill gas to ultra-low-carbon liquefied natural gas . The greenhouse gas emissions associated with this fuel are more than 80% lower than those of diesel. It’s the cleanest fuel available for heavy-duty trucks today. The facility produces 13,000 gallons of LNG per day and helps to power the company’s fleet in California. In Ohio, the company processes about 3,000 SCFM of landfill gas and delivers it to a natural gas pipeline.
There are now 134 projects on Waste Management landfills that use landfill gas to generate electricity, produce renewable gas, or displace fossil fuel.