Lynn Good has been elevated to president and CEO of Charlotte, N.C.-based Duke Energy, the largest U.S. electric utility. Formerly executive vice president and chief financial officer, she succeeds James Rogers, who remains chairman until December, when he is set to retire. Good is one of eight women CEOs of the 200 U.S. investor-owned utilities. She also was group executive and president of Duke Energy's commercial businesses group, responsible for Midwest non-regulated generation, international and renewables work.