On average, consumers in states that let you choose among suppliers save the equivalent of one month's bill in the first year after switching. By Kimberly Lankford, Contributing Editor From Kiplinger's Personal Finance, June 2015 I often get offers in the mail about switching electricity providers. How do I assess whether these companies offer a better deal than my local utility? --J.L., Silver Spring, Md.See Also: When Customer Loyalty Doesn't Pay Many states passed legislation in the late 1990s and the 2000s deregulating energy companies, opening the door to competition among electricity and natural gas suppliers. In about one-third of the states, you can shop suppliers to get the best deal. Your local utility still delivers the energy to your home, sends you the bill and handles power outages. On average, consumers in states that let you choose among suppliers save the equivalent of one month’s bill in the first year after switching, says Phil Croskey, CEO of PointClickSwitch.com, which compares suppliers in seven states. Most state public utility commissions make it easy to compare rates (www.naruc.org/commissions). Texas, Ohio and Maryland, for example, have tools that show the price per kilowatt-hour from the suppliers in your area and specify whether the rate is fixed or variable, the duration of the term, any cancellation fee, incentives (such as a small sign-up bonus), and the estimated monthly charge based on your energy usage (look at your old bills for the number of kilowatt-hours you use). Most states also show the number of complaints lodged against suppliers. Be mindful that variable rates can change daily or monthly based on market conditions and can spike during a frigid winter or a hot summer; you’re probably better off sticking with a fixed rate, says Terry Hadley, of the Texas public utility commission. Croskey recommends comparing your current rate with those of other suppliers at the beginning of every season. You can switch at any time, although you might incur a fee. The new supplier can make the change. Got a question? Ask Kim at email@example.com.