Concerned about your electricity bill? Eversource’s rate just shot up to 24.17 cents per kilowatt hour for most residential accounts, but you can switch any time to another supplier with lower rates. Two websites, EnergizeCT and PowerSetter, offer comparative listings from which to choose and sign-up forms to use if and when you decide to switch. Rates vary by length of contract, but most companies offer several options and you can opt to be notified of an impending price decrease. If prices do change, there is no penalty for switching to another supplier with a better rate.