Check out a list of electric utility companies in the U.S. below. Looking for an electric rate? Search by zip code below to shop now…
What Is A Utility Company?
Natural gas and electric utility companies were the main source of energy for many years. In fact, since the original organization of energy in the United States, utilities were responsible building power and gas lines, generating power, delivering electricity and natural gas, and billing customers. In states that are still regulated today, utility companies are still responsible for all of this.
In a deregulated state, however, utility companies have a slightly different role. Read more about the difference between energy suppliers and utilities in deregulated states below.
How Do Utilities Differ From Energy Suppliers?
In states that have deregulated utilities, utility companies play a different role. In these states, utilities do not own the entire energy supply chain. In fact, deregulation makes it impossible for utilities to own generation plants, and even sell energy to end users in states like Texas.
In these states, energy suppliers are allowed to purchase electricity and natural gas from the wholesale market and resell it to the utility company’s customers. Some energy suppliers even generate their own electricity and natural gas in these states. When a customer elects to purchase energy from a supplier, the utility company still maintains local power lines, delivers energy to the customer, and in many cases, is still in charge of billing the customer. Learn more about each state’s utilities below…
Eversource is the largest energy company in New England. In fact, they serve Connecticut, New Hampshire and Massachusetts. Specifically, in Connecticut, Eversource serves 1.2 million customers in 149 towns and over 4,400 square miles.
Eversource maintains 40,542 circuit miles of electric power lines. Because of this, they have a vast network for delivering reliable energy to people’s homes and businesses. Click to learn more about Eversource.
United Illuminating (UI) is a part of AVANGRID, Inc., which owns many utilities across Massachusetts, Maine, New York, and Connecticut. UI started in 1899 and now serves over 338,000 customers in Connecticut. Its service area covers 335 square miles along the Long Island Sound, and its power lines span 17 towns and cities. Click to learn more about United Illuminating.
Delmarva Power is a utility owned by the Exelon Corporation. It operates in Delaware and Maryland, serving over 532,000 electric and 136,000 natural gas customers. They started in 1909 and have since grown their service to 5,400 square miles. The Delaware region covers 324,000 customers of the company’s overall base.
Delmarva Power operates with 10 facilities and 199 substations in its service area. The company employs over 1,500 people, and in 2019, it donated over $1.3 million to 230 local organizations. Click here to learn more about Delmarva Power Company.
Ameren Electric is a part of the Ameren Corporation based in Collinsville, Illinois. Ameren Corp. also has an energy utility in Missouri. The company employs over 9,000 people and serves over 2.4 million customers in Illinois and Missouri.
Ameren Illinois serves 1.2 million energy customers, and its service area covers 43,700 square miles. The company’s complex delivery system includes 46,000 power lines. Click to learn more about Ameren in Illinois.
Commonwealth Edison, or ComEd, started in 1907 and is now a part of Exelon. ComEd serves around 4 million customers in northern Illinois, about 70% of the state. The company handles over 90,000 miles of power lines to ensure the customers in its 11,400-square-mile sector receive constant energy.
Since 2001, ComEd has invested over $5 billion into its transmission and distribution system. The company employs around 5,600 people and relies on 1,300 substations to maintain power distribution services. Click to learn more about ComEd.
Central Maine Power (CMP) is a part of AVANGRID and covers almost 11,000 square miles. About 80% of Maine’s population is part of CMP energy territory. As of early 2000, Central Maine Power Co has been solely responsible for maintaining transmission and distribution for its customers. Click to learn more about CMP.
Versant Power is responsible for almost 159,000 customers in Maine. Also, their headquarters is in Bangor, Maine, Versant became part of the ENMAX Corp companies in 2020, prompting a name change as part of the agreement. Originally, the utility had operated as Emera Maine since 1998. Click to learn more about Versant.
Baltimore Gas and Electric is the largest natural gas and electric utility in Maryland. They started over 200 years ago in 1816 and has since become a part of the Exelon Corporation. BG&E operates across over 2,300 square miles with 1.3 million electric customers and 680,000 gas customers. With over 3,200 employees, BG&E operates across 26,600 miles of power lines and has 244 substations for delivering energy. Click to learn more about BG&E.
Delmarva Power Company is a utility that operates in Maryland and Delaware. The company was incorporated in 1909 and now exists under the Exelon Corporation. Across the two states, they employ 1,515 people.
In total, the company serves 532,000 electric customers, and 208,000 of them exist in Maryland. Delmarva’s service area covers 5,400 square miles with 199 substations. The company also focuses on serving the community. In 2019, it donated $1.3 million to 230 organizations in its territory. Click to learn more about Delmarva Power.
Pepco is a utility owned by Exelon Corporation. They were incorporated in 1896 and now serves Washington, D.C., and some parts of Maryland. Pepco serves 894,000 customers total, with 582,000 located in Maryland.
Their service reaches 640 square miles with 156 substations and nine facilities. Also to note, Pepco relies on over 1,400 employees to deliver power to homes and businesses. Click to learn more.
Potomac Edison is one of 10 companies under FirstEnergy Corp, which serves the Midwest and Mid-Atlantic. The Potomac Edison evolved from Allegheny Energy, an energy utility that merged with FirstEnergy in 2011. Since then, they have grown to over 400,000 people in Maryland and West Virginia. Click to learn more about Potomac Edison.
Eversource was formed in the mid-19th century, and it grew out of many utility companies merging into one giant company. Since its formation, Eversource has become the largest energy delivery company in New England.
The utility operates in Connecticut, New Hampshire and Massachusetts, serving over 4.3 million customers. They rely on a team of over 9,000 people to deliver safe energy to homes and businesses. Click to learn more about Eversource.
National Grid serves about 20 million energy users in New York, Rhode Island and Massachusetts. The company started in 1812 in Britain and grew to the U.S. in 2000. Since then, it has grown into the largest investor-owned energy company in the U.S. They employ over 23,000 people worldwide.
National Grid Mass relies on a portion of the company’s 9,109 miles of overhead power lines. The U.S. sector of the company also uses 105 miles of underground transmission cables and partnered with Sunrun to provide solar power to 27,000 customers in the country. Click to learn more about National Grid.
Unitil Corporation is made up of locations in New Hampshire, Maine and Massachusetts. The entity was devised in 1984 with its initial subsidiaries, including The Concord Electric Company and Exeter & Hampton Electric Company. Today, it serves 107,100 electric and 85,600 gas customers. Click to learn more about Unitil.
New Hampshire Utilities
Eversource started as a group of utilities known as Northeast Utilities (NU). When deregulation first started in the late 90s, they slowly sold assets and joined NSTAR, the utility in Greater Boston. By 2017, Eversource became its own utility in the state. Click here to learn more about Eversource in NH.
Liberty Utilities is a distribution company under the Algonquin Power & Utilities Corporation (APUC). They own companies across Canada and the U.S., working in both regulated and deregulated states. APUC bought two utilities in New Hampshire in 2012 to form Liberty Utilities. Liberty electric in New Hampshire includes a portion of APUC’s base of over 1 million customers. Click to learn more about Liberty Utilities.
Unlike corporate-owned utilities, New Hampshire Electric Co-op (NHEC) is a nonprofit owned and run by members of the community it serves. The coop started in 1939 in Plymouth, and it has since grown to 6,000 miles of power lines.
NHEC delivers power to 115 towns and cities, reaching nine of the 10 counties in the state. In total, New Hampshire Electric Co-op serves over 84,000 people. Click to learn more about NHEC.
Unitil Corporation operates in Maine, New Hampshire and Massachusetts. In total, they serve over 107,000 electric and 85,000 gas customers. The corporation began in Maine in 1849 and combined with other utilities over the years. In 1901, it grew to New Hampshire. Click to learn more about Unitil in NH.
New Jersey Utilities
Atlantic City Electric (ACE) is a part of the Exelon Corporation that serves about 560,000 customers in southern New Jersey. The company was first formed in 1924 and now delivers electric across its 2,800-square-mile service area. With eight facilities and 90 substations, the ACE is a strong energy provider in the state.
The company employs 560 people and provides funding to local organizations for community growth. In the past five years, ACE has donated over $3.1 million to the community it services. Click to learn more about ACE.
PSEG New Jersey is one of three entities under the Public Service Corporation. The company started in Newark, New Jersey, in 1903 and grew to service New York as it developed. PSEG is New Jersey’s largest energy provider, and it serves over 2.3 million electric customers. It’s also the state’s oldest publicly owned utility. Click to learn more about PSE&G.
New York Utilities
Con Edison of NYC is an electric utility that serves over 3.4 million customers. Its 604-square-mile service area covers New York City and Westchester County with 96,000 miles of underground cables and 34,000 overhead cables. The company started in 1823 as the New York Gas Light Company. Click to learn more about ConEd.
National Grid is one of the largest investor-owned utilities in the United States, providing service to New York, Massachusetts and Rhode Island. The company started in 1812 in the United Kingdom and expanded to the United States in 2000. National Grid NY relies on a portion of the 9,109 miles of overhead line and 105 miles of underground lines in the U.S. Click to learn more about National Grid in NY.
NYSEG is a part of AVANGRID and currently services over 900,000 electric customers across 40% of the state.
New York State Electric and Gas first started over 200 years ago as Ithaca Gas Light delivering natural gas for customers’ lamps. The company went through several acquisitions and in the early 1900’s, the company became NYSEG. Click to learn more about NYSEG.
AEP Ohio is owned by American Electric Power. They serve 5.4 million people in 11 states with a service area of over 200,000 square miles. As a company, they own over 219,000 miles of power lines. Of AEP’s 5.4 million customers, AEP Ohio serves 1.5 million. They are located in Gahanna, Ohio, and they’re the largest company under American Electric Power. Click to learn more about AEP Ohio.
The Dayton Power and Light (DP&L) company, now called AES Ohio, is headquartered in Dayton, Ohio, and serves the Miami Valley. Dayton Power was founded in 1911, and its 6,000-square-mile service area provides energy to 1.25 million people in West Central Ohio.
The entity manages 13,365 miles of overhead distribution lines and employs about 700 professionals. In 2011, AES acquired Dayton Power and Light, and in February 2021, the company officially changed its name to AES Ohio. Click to learn more about DP&L.
Duke Energy can be found in six states, serving over 7 million electric customers in total. They also serve over 1.5 million gas customers in Ohio, Kentucky, the Carolinas and Tennessee. For more than 150 years, Duke Energy has served homes and businesses as a utility. Based in Charlotte, North Carolina, they are one of the largest energy companies in the country. Click to learn more about Duke Energy.
Ohio Edison is one of three utilities in Ohio owned by the FirstEnergy Corporation, and it is the largest service area of the three. It serves over 1 million customers in northeast and central Ohio, and it relies on a fraction of FirstEnergy’s 269,000 miles of power lines. Click to learn more about Ohio Edison.
The Cleveland Electric Illuminating Company, also referred to as The Illuminating Company, is one of three utilities in Ohio under the FirstEnergy. The company uses a fraction of FirstEnergy’s 269,000 miles of power lines to serve over 700,000 customers in northeastern Ohio. Click to learn more about the Illuminating Company.
Toledo Edison is a utility owned by FirstEnergy Corporation, and it’s one of three offered in the state. Serving over 300,000 customers in northwestern Ohio, they use a portion of FirstEnergy’s 24,500 miles of transmission lines and 269,000 miles of power lines. Click to learn more about Toledo Edison.
Duquesne Light Company (DLC) serves 817 square miles in southwestern Pennsylvania and provides power to nearly 600,000 customers.
Between 2010 and 2020, they invested $2.6 billion in infrastructure and power lines. Responsible for Pittsburgh and surrounding areas, DLC has five service centers to handle their customers. Click to learn more about Duquesne Light.
Also known as Metropolitan Edison, Met-Ed operates in southeastern Pennsylvania and covers 3,300 square miles. They are one of 10 utilities owned by First Energy, a corporation that owns entities in Maryland, Pennsylvania, New Jersey, Ohio and West Virginia.
Met-Ed uses a portion of First Energy’s 269,000 miles of distribution lines to serve the counties outside of the Philadelphia Metropolitan area. Click to learn more about Met-Ed.
PECO is an electric utility distribution company serving customers throughout the Philadelphia region. Founded in 1881 as Philadelphia Electric Company, PECO currently employs over 2,300 people and is owned by Exelon, one of the world’s largest energy companies. Being part of Exelon Corporation, PECO is based in Philadelphia and serves southeastern Pennsylvania. They have more than 1.6 million electric customers and over 532,000 natural gas customers in the greater Philadelphia region. PECO is Pennsylvania’s largest electric and natural gas utility. Click to learn more about PECO.
Penelec (Pennsylvania Electric Company) is a large electric utility in PA, serving northern and central regions in the state. If Penelec is your utility and you have not switched your supply, you may be paying a default rate that changes throughout the year, also known as the price to compare — when you could be paying less. Click to learn more about Penelec.
Penn Power is located in western Pennsylvania owned by its parent company, FirstEnergy. The FirstEnergy Corporation owns nine other companies spanning Pennsylvania, Ohio, New Jersey, West Virginia and Maryland, and it serves over 6 million customers. Penn Power distributes electricity to more than 160,000 homes and businesses in Pennsylvania. It operates on a portion of FirstEnergy’s 24,500 miles of transmission lines. Click to learn more about Penn Power.
PPL Electric Utilities (originally Pennsylvania Power & Light) serves over 1.4 million Pennsylvanians in 29 counties. They maintain over 50,000 miles of power lines in the state, and they’ve also earned awards from J.D. Power and Associates for their committed service to residents and business owners. PPL Electric Utilities has been in business since 1920, and with 100 years of experience, they have the skills to maintain electricity to neighborhoods in central and eastern Pennsylvania. Click to learn more about PPL.
WPP is an electric utility in central and western Pennsylvania. FirstEnergy Corp owns the company, as well as nine other entities operating in Pennsylvania, New Jersey, Maryland, Ohio and West Virginia. While FirstEnergy serves over 6 million customers across its five states, West Penn Power distributes electricity to 720,000 customers. Click to learn more about West Penn Power.
AEP Central Texas is part of American Electric Power (AEP), one of the nation’s largest electric utilities. AEP services over 5 million electric customers in 11 states, and owns the largest electrical transmission network in the United States. AEP Texas Central’s territory covers most of southern Texas. Click to learn more about AEP Central.
AEP Texas North is part of American Electric Power (AEP), one of the nation’s largest electric utilities. AEP services over 5 million electric customers in 11 states, and owns the largest electrical transmission network in the United States. AEP Texas North’s territory covers parts of central and northern Texas. Click to learn more about AEP North.
CenterPoint is a large utility in the U.S., and it’s a distribution center for natural gas and electricity in Texas. When you work with EnergyPricing.com to find your ideal utility rate, you’ll still work through your utility company. Learn about CenterPoint and if you’re located in their service area. Click to learn more about CenterPoint.
Oncor is the largest electric delivery company in Texas. They’ve operated in the state since 1912, and they distribute power with over 100,000 miles of overhead wires and underground cables. With their vast network, they serve over 10 million Texans across 98 counties and over 400 communities. Click to learn more about Oncor.
Washington D.C. Utilities
The Potomac Electric Power Company serves 894,000 customers in Washington, D.C., and Maryland. They began in 1896 and has since merged with the Exelon Corporation along with five other entities. Pepco has a 640-square-mile service territory and employs over 1,400 workers. Pepco maintains nine facilities within its service area and has 156 substations for delivering power to its patrons. The company also contributes to community efforts. In 2019, Pepco donated over $3.4 million to local organizations. Click to learn more about PEPCO.