The Environmental Protection Agency has been tightening pollution standards for toxic emissions, and regulations are likely to increase in the future.
The new rules push utilities toward cleaner energy production, but they’re also costly.
Coal-fired power plants in Indiana are balancing federal demands with business pressures in a number of ways.
Some, like Indianapolis Power and Light’s plant in Indianapolis, are converting to run on natural gas.
Others are shutting down, like the plant owned by Duke Energy in Terre Haute.