Illinois Gov. JB Pritzker vetoed a measure that would have allowed incumbent utilities in downstate Illinois exclusive rights to build regional MISO transmission lines.

The Illinois Senate approved legislation putting the state on a path to 100% carbon-free electric generation and bailing out two Exelon nuclear plants.

Illinois officials agree on subsidizing three Exelon nuclear plants, but the fate of the 1,600-MW Prairie State coal plant remains a contentious issue.

Illinois Democrats' drive to 100% clean energy is hamstrung by a struggle between labor, green and environmental justice factions.