WASHINGTON (AP) — One of the largest U.S. electricity producers will stop burning coal at two of its power plants and make deeper pollution cuts at more than a dozen others under a legal settlement reached with the Environmental Protection Agency, eight states and several environmental groups.

American Electric Power agreed late Friday in federal court in Columbus, Ohio, to retire or switch to natural gas two coal-burning units at the Muskingum River power plant in Ohio and the Tanners Creek power plant in Indiana by the end of 2015.