Gibson County Coal filed a notice Friday. The layoffs are effective Jan. 15.

The Energy Policy Development Task Force met Thursday, for the final time this year, and debated ways to balance the use of coal and renewable energy sources.

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.