This is an excerpt from EERE Network News, a weekly electronic newsletter.
Portland Sewage Plant Powers Itself with Biogas
In biogas news, a sewage treatment facility is supplying its own power from methane generated during the sewage treatment process. The plant recently installed four microturbines to burn waste biogas. They will be sited near a previously installed fuel cell that also converts biogas into energy. The microturbines burn the gas to provide electricity and heat used in plant operations.
The biogas project is part of the Portland Office of Sustainable Development's City Energy Challenge (CEC), which claims to have reduced Portland's energy costs by more than $2 million per year. For more information on the biogas projects and CEC see CEC's Web site.