Reporting from Illinois Public Radio's Amanda Vinicky used in this report.
The Illinois Senate has approved changes intended to help revive electricity legislation vetoed by the governor.
The changes passed 37-20 Tuesday, despite opposition from Gov. Pat Quinn.
At issue is a plan to let power companies raise rates to pay for infrastructure improvements, including high-tech changes called "Smart Grid." Critics say the plan guarantees unfair profits and weakens state regulators.