Electric rate caps are a thing of the past for PECO Energy Customers. They expired at the end of 2010 opening up the era of electric choice in Bucks and Montgomerty Counties as well as the rest of the utility service territory. PECO Energy rates are expected to increase by about 5% but customers are free to shop around for the best deal. A comparision of supplier rates is available on the web at PApowerswitch.com. Rate caps came off for P P & L customers last year and about a third of their customers switched suppliers.