The Metropolitan Wastewater Management Commission was producing more biogas than its equipment could use to generate electricity and heat. As a result, the plant was flaring about 40% of the biogas it produced.
The regional facility, which serves the cities of Springfield and Eugene and Lane County, Oregon, could have added more generating capacity. Instead, the commission invested in a new system to turn the biogas into renewable natural gas to be sold into the natural gas grid.The decision required a substantial investment in equipment, and a receiving point for the natural gas utility to accept the RNG. “A number of
