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.
Maryland residents are now able to choose who supplies their electricity. (Customers of municipal electric systems and some rural cooperative systems are the exceptions - see "Areas not participating.") Your local utility, now called your electric company, will still deliver the electricity to your home, but you can choose another company to generate the electricity, if other companies are making an offer in your area.