Environmental groups behind the lawsuit say federal regulators violated a 2017 court ruling when they approved the project.
Illinois has the ability to prevent the biggest electric increase in state history, writes David Kolata of the Citizens Utility Board.
Sweeping “minimum offer” rule will likely cut into the competitive edge for renewables as a hedge against fossil fuels.
Nuclear and coal subsidies mean state consumers will likely pay more than $1 billion per year more, an analysis shows.
The decision by federal energy regulators will affect how the state makes long-range plans for nuclear, renewable power.