If you’re responsible for paying the bills in your home, you’re familiar with utilities like electricity, natural gas and water. But if you’re moving into a new place, for instance, you may not know the utility companies for your address yet. And you may be wondering, “Who is my electric company?”
In the United States, you can find utilities by address fairly easily. Most addresses still tie to a single distribution utility, yet the power itself can come from multiple retail suppliers or, in community-choice aggregation (CCA) areas, from the municipality’s chosen provider. But in some states, you’ll have additional energy choices to make. You’ll need to find an electricity or natural gas provider.
Constellation now supplies retail electricity or natural gas in 16 states plus Washington, D.C. To find out if Constellation is an energy supplier in your state, enter your zip code below and start comparing rates.
Over the years, some states and towns in the United States have deregulated their energy markets. In those places, customers can choose their energy supplier. That leads to competition and, often, lower prices or value-added services. As of 2025, full electricity retail choice is available in 14 states (e.g., Texas, Ohio, Illinois, Connecticut), while more than 19 states—including Georgia, Michigan, New Jersey—support natural-gas choice. A handful (Pennsylvania, Massachusetts, Ohio) allow you to shop for both commodities. See the full list of deregulated electricity and natural gas states below:
In those markets, your energy provider may be a different company than the local utility. Basically, the utility is responsible for delivering your energy. The retail energy provider supplies your energy and helps you secure the rate you pay for electricity or natural gas.
So, if you live in a place that has energy choice, it can pay to shop around. You’ll want to find an electricity and/or natural gas provider with an energy plan and pricing that meets your needs. In some states, like Texas, you can choose your electricity provider. In other states, like Georgia, you can choose your natural gas provider. And some states, like Pennsylvania and Massachusetts, allow residents to choose both electricity and natural gas providers. If you’re not sure whether your state offers energy choice, one way to find out is by contacting your local utility or state regulatory commission.
There are several ways to find your electricity provider. If you don’t get to choose your supplier where you live, it will be the same as finding the utility company that services your address.
To find the natural gas supplier for your address, you would follow many of the same steps you would take to find an electricity provider.
Once you have a better understanding of your utility and energy supplier options, you can use your energy bill to get a sense of the pricing of your energy plan. Electricity plans are quoted in cents per kilowatt-hour (¢/kWh). Retail natural-gas plans typically use dollars per therm or per dekatherm (Dth).
When you identify your energy supplier, call their customer service number to find out the energy plan for your address. You may also be able to contact your provider online. If you or someone in your household set up the plan, you may still be under a contract for a set price over a set time period. When a fixed-term contract ends, many suppliers shift you to their standard-offer service—sometimes variable, sometimes a short fixed rate—so review renewal notices carefully.
If you live in a place with energy choice, you may be able to sign up for a different energy plan for your home. But price is just one factor to think about. You’ll also want to consider contract length, the company’s reputation, customer service and any additional taxes or fees that might be added. Knowing your energy habits and needs — and how they might be best served — will guide you in choosing the best energy supplier for you.
Whether you’re setting up a new home or just want to take control of your energy use, an important step is finding the utility companies that service your address. But if you live in a market with energy choice, you may also choose an electricity provider and/or natural gas supplier with an energy supply plan that’s right for you.
Constellation provides electricity and/or gas to customers in Texas, Georgia, Ohio, Pennsylvania, Massachusetts, Maryland and more. View our current fixed supply rate plans and decide if switching to Constellation is right for you. With a little research, you can rest assured that when you open your energy bill, you’re getting competitive rates on electricity and natural gas.
Whatever your energy needs are, we've got a plan for you
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