Charleston Gazette: Coal’s share of the U.S. energy supply is expected to drop slightly over the next two decades as regulators, investors and utilities drop plans for new coal-fired power plants, the U.S. Department of Energy said this week. Read the report DOE’s Energy Information Administration has dropped its project of new coal plants that would come online by 2030 from 104 gigawatts to 46 gigawatts, the equivalent of nearly 100 typical new facilities not being built. The DOE analysis assumes …