There are several reasons that some energy suppliers end up being cheaper than others. The largest energy companies, also known as the Big Six, often do not need to offer rates that are as competitive as smaller companies. This is because they are more recognisable names and therefore can always rely on a steady base of customers. You can avoid this and save money by switching to a cheaper provider.
Twenty-nine states have deregulated electricity, natural gas or both. That allows you to shop for the supply portion of your bill from alternative providers who may offer rates lower than the default supplier – usually a utility. Delivery services and billing will remain the responsibility of the local utility as they own the power lines and wires that keep the lights on.