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Landfill Methane Outreach Program

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Project Profile

Greenwood Farms High Btu Project

Tyler, Texas
End User(s):
Gulf South Pipeline
Greenwood Farms Landfill
Landfill Size:
5.5 million tons waste-in-place (2008)
Project Type:
High Btu
Project Size:
1,600 standard cubic feet per minute (scfm)
Environmental Benefits:
Carbon sequestered annually by more than 40,000 acres of pine or fir forests, annual greenhouse gas emissions from 36,000 passenger vehicles, or carbon dioxide emissions from more than 440,000 barrels of oil consumed. Annual energy savings equate to heating 5,400 homes. Estimated emissions reductions of 0.052 million metric tons of carbon equivalents.
LMOP Partners Involved:
Republic Services, Inc., SouthTex Renewables, LLC
Last Updated:

Photo of multi-stage compressor used to compress landfill gas.

Greenwood Farms was one of more than a dozen start-ups or expansions of high Btu landfill gas (LFG) energy projects from 2006 to 2009. These projects rode a wave of high natural gas prices and improved technology that combined to make high Btu projects more economically feasible.

A high Btu LFG energy project employs the latest advancements in technology to remove carbon dioxide and other impurities from LFG, resulting in a gas that is more than 95 percent methane and has a heating value equivalent to natural gas. The improved technology means that landfills with lower gas flows such as Greenwood Farms can capitalize on higher natural gas prices, which drive returns on high Btu gas.

Since May 2009, the gas treatment plant has been cleaning and treating LFG for sale into the Gulf South Pipeline. Project developer SouthTex constructed the collection system, skid-mounted gas treatment plant, and pipeline in less than nine months. Flows in late 2009 were in excess of 1,600 scfm, with growth expected over the project life. Runtime since startup has exceeded 96 percent.

According to SouthTex, the skid-mounted design is less expensive and easier to install and operate than previous technology. LMOP's national database shows that five physical solvent high Btu LFG energy projects have come on line since 2000 at landfills with gas flows as low as 1,000 scfm.

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