Experts say half of Indiana's coal plants are 40 years old or more and will need expensive repairs in the next 30 years.

The Petersburg Generating Station activists want to see closed is a coal-fired power plant in southwest Indiana. It's been in the news as what's called a "super polluter."

The coal-burning Wabash River Generating Station near Terre Haute began operating in 1953 and was closed in 2016.

Several groups say Indiana needs to move away from coal and toward renewable energy, but how the state should do that is up for debate.

The decision is part of an updated consent decree that was approved by a federal district court judge on Wednesday.

The U.S. Environmental Protection Agency announced Monday Terre Haute and the rest of Vigo County now meets the National Ambient Air Quality Standard for sulfur dioxide.

The new Affordable Clean Energy rule allows states to set their own goals for greenhouse gas emissions.

The former EPA administrator recently registered as a lobbyist with Rail Point Solutions LLC, a subsidiary of the coal company Hallador Energy.

Pruitt registered as an energy lobbyist in Indiana last week for the parent company of Terre Haute-based mining company Sunrise Coal.

As coal plants close around the country, the demand for natural gas is going up. But an expert says it likely won't have a big effect on Hoosier's heating bills in the long run.