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

The Illinois House approved Gov. J.B. Pritzker’s massive Energy Transition Act, sending the bill back to the Senate for expected concurrence on Monday.

Illinois lawmakers continue to debate a landmark energy bill aimed at fighting climate change ahead of a Sept. 13 deadline to save the Byron nuclear plant.