Portland-based NW Natural is partnering with Idaho-based BioCarbN to invest up to $38 million in four U.S. renewable natural gas (RNG) production projects. 

Renewable

The joint projects involve ones with a Tyson Foods Inc. facility in Nebraska to produce biomethane from its wastewater treatment unit, according NW Natural’s Scott Johnson, interim director of Renewable Resources. 

“These first deals with Tyson are a good start, but we will need to invest in more projects to meet our goals,” Johnson said. “The methane is derived from the facility wastewater, but food production waste is the organic feedstock that produces this methane and puts the RNG into the agricultural byproducts category.”

NW Natural envisions the four projects could produce up to 1.2 billion Btu/year of...