State regulators say a $15 million poultry-waste biogas plant planned for Anson County can participate in an alternative-gas pilot program, clearing the way for Catawba Biogas to build the plant and inject the gas into the pipelines of Piedmont Natural Gas. Catawba Biogas plans to sell at least some of the gas to Duke Energy Corp. (NYSE: DUK), of which Piedmont is a subsidiary, for use as directed biogas at natural gas plants operated by Duke Energy Carolinas and Duke Energy Progress. The company says it “will collect litter and manure from over 250 houses of broiler chickens” in the region and use it to produce the equivalent of about 300 million cubic feet of natural gas a year. More>>