Duke Energy, U.S. Gov't end 15-year-old Clean Air Act litigation

[caption id="attachment_833481" align="aligncenter" width="600"] The Belews Creek Steam station, a two-unit coal-fired generating facility in North Carolina, is Duke Energy’s largest coal-burning power plant in the area. (Image courtesy of Duke Energy)[/caption] Duke Energy (NYSE:DUK), the U.S. largest electrical utility,...