Duke Energy's Marshall coal-fired power plant on Lake Norman.
Duke Energy's Marshall coal-fired power plant on Lake Norman. Diedra Laird dlaird@charlotteobserver.com
Duke Energy's Marshall coal-fired power plant on Lake Norman. Diedra Laird dlaird@charlotteobserver.com

Green energy advocates to march over carbon plan

December 16, 2015 09:16 AM