Watch the video: Are Chicago consumers about to get shocked by their electric bills? Advice from the Citizens Utility Board on what to expect and how to avoid bad deals.

The watchdog group Citizens Utility Board on Wednesday alerted Chicago customers to upcoming changes to their power bills and offered tips for avoiding bad deals.

Jim Chilsen of Citizens Utility Board joins Chicago Tonight to tell us about the changes coming in August when the city of Chicago ends its two-year municipal aggregation program.

Are you getting the best deal from your electric company? Use the Citizens Utility Board’s power deal calculator to find out how your electric supplier compares to alternative suppliers’ plans.