Governor Pat Quinn has rejected a plan to increase electric rates by about $70 million.
Quinn vetoed the plan Sunday, saying the bill would undermine oversight and force automatic rate hikes.
ComEd says the proposal would have helped get so-called Smart Grid technology back on track.
The Smart Grid plan covers ComEd and Ameren homes.
Lawmakers are expected to override Quinn’s veto, but the governor says lawmakers who support an override are voting to raise your electric rates.