In every state, utility companies deliver electricity to homes and businesses. Your utility is predetermined based on your location. Some states have deregulated or partially deregulated energy markets, meaning consumers can purchase their energy from their utility company or an energy provider. Energy providers are independent companies that sell electricity plans to consumers, and are typically responsible for managing your electric account and billing.

Deregulation varies by state. In Texas, for example, consumers can only purchase electricity from an energy provider and they don’t have the option to buy from their utility. In other deregulated states, like Maryland for instance, residents can purchase electricity from either their utility or a separate provider.

This guide lists utility companies by states with energy deregulation. Simply navigate to your state to learn more about the utility company that serves you.