Puget Sound Energy has agreed to buy biogas originating from one of the nation’s largest landfills that feeds into Williams’ Northwest Pipeline in southern Washington.

Under an agreement with the Klickitat Public Utility District, PSE will purchase about 550,000 dekatherms per year for the first three years, later growing to as much as 2.5 million.

The renewable natural gas is produced at the H.W. Hill Renewable Natural Gas facility in Roosevelt, Washington. Methane is drawn from the Republic Services landfill and following processing, the biogas is received at the nearby Williams Northwest Pipeline interconnection. The volume of energy produced at the facility is the equivalent of 18 million gallons of gasoline annually.

Northwest Pipeline is a 4,000-mile bi-directional transmission pipeline which is a primary artery for the transmission of natural gas to end use customers throughout the Pacific Northwest and Intermountain Region. 

“The landfill project – one of several in the nation for Williams — demonstrates how public-private partnerships can help all parties achieve goals to reduce carbon emissions and protect the environment,” said Camilo Amezquita, VP and GM of Northwest Pipeline.

Read more about Williams’ other renewable natural gas projects here and here.