PITTSBURGH (AP) -- GenOn Energy Inc. says it plans to close five of its older coal-fired power plants in Pennsylvania over the next four years.
The company, based in Houston, says Wednesday that tough new environmental rules make it unprofitable to operate the plants.
The plants are in Portland, Shawville, Titus, New Castle and Elrama. Two plants in Ohio will also be closed.
The Sierra Club says in a statement that closing the seven plants will prevent about 179 premature deaths, 300 heart attacks and 2,800 asthma attacks each year.