The electric power industry in the US plays a crucial role in providing reliable energy to millions of customers. This sector features various companies involved in electricity generation, transmission, and distribution, delivering power from diverse sources such as renewables, coal, and natural gas. The industry is currently transitioning towards cleaner, more sustainable energy solutions in response to climate change and consumer demand. As more states implement ambitious renewable energy targets, innovation is thriving. Furthermore, utilities are increasingly focusing on energy efficiency and smart grid technologies, promising enhanced customer service and engagement in the years to come.

This article highlights 22 significant electric power companies across the US, showcasing a range of operational scales from small local utilities to large corporations. Headquartered in key regions, these companies were founded as early as the 1900s and now specialize in varying energy solutions like renewable energy generation and energy efficiency programs. These organizations are committed to reliable electricity provision, engaging with local communities, and embracing environmental sustainability while adapting to technological advancements and changing consumer preferences.

Read on to discover the top electric power companies in the US.

Top 22 Electric Power Companies in the US

1. Idaho Power

• Website: idahopower.com
• Ownership type: Private
• Headquarters: Boise, Idaho, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1916
• Headcount: 1001-5000
• LinkedIn: idaho-power-company

Idaho Power Company, based in Boise, Idaho, is a private, regulated electric utility that has been serving customers since its founding in 1916. The company provides electricity generation, transmission, and distribution services primarily to residential and commercial clients in southern Idaho and eastern Oregon. Idaho Power operates a mix of hydroelectric dams and natural gas power plants, emphasizing the importance of reliable energy delivery. The company is also committed to energy efficiency, offering various programs aimed at helping customers reduce their energy consumption and costs. Additionally, Idaho Power is actively involved in environmental stewardship, focusing on sustainability and the protection of local ecosystems. Its initiatives include conservation efforts for fish and wildlife, as well as investments in renewable energy sources. With a workforce of approximately 1,457 employees, Idaho Power continues to play a vital role in the energy sector of the Pacific Northwest.

2. Alabama Power Company

• Website: alabamapower.com
• Ownership type: Private
• Headquarters: Birmingham, Alabama, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1906
• Headcount: 5001-10000
• LinkedIn: alabama-power-company

Alabama Power Company, based in Birmingham, Alabama, is an electric utility company that has been serving the state since its inception in 1906. With a workforce of approximately 5,000 to 10,000 employees, the company provides electricity to a wide range of residential and business customers. Alabama Power is not just about delivering power; it offers various energy solutions, including flexible billing options, energy-saving programs, and initiatives aimed at promoting clean energy. The company is actively involved in community projects that aim to improve the quality of life for Alabamians. Their clean energy efforts are noteworthy, with nearly one-third of the electricity supplied coming from clean fuel sources. This includes investments in hydroelectric, solar, and nuclear energy, showcasing their commitment to sustainable practices. Furthermore, Alabama Power engages in innovative programs designed to help customers save energy and reduce costs, reinforcing their role as a responsible utility provider.

3. Reliant Energy

• Website: reliant.com
• Ownership type: Corporate
• Headquarters: Houston, Texas, United States (USA)
• Employee distribution: United States (USA) 94%, Mexico 3%, Other 2%
• Latest funding: May 2009
• Founded year: 2000
• Headcount: 1001-5000
• LinkedIn: reliant-energy

Reliant Energy, founded in 2000 and based in Houston, Texas, is an electricity provider that serves a wide range of customers, including residential and business clients. The company offers various electricity plans designed to meet the needs of its customers, such as fixed-rate plans and options for renters. Reliant Energy emphasizes reliability and customer service, providing 24/7 support to assist customers with their energy needs. They also focus on energy management solutions, offering tools that help customers monitor and manage their energy usage effectively. Additionally, Reliant Energy is committed to renewable energy, providing options like solar energy plans and carbon offsets. Their community involvement is notable, with initiatives aimed at supporting local causes and assisting customers facing financial hardships. With a workforce of over 1,000 employees, Reliant Energy continues to play a vital role in the Texas electricity market, adapting to the evolving energy landscape.

4. MidAmerican Energy Company

• Website: midamericanenergy.com
• Ownership type: Private Equity
• Headquarters: Des Moines, Iowa, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $13.1M, November 2023
• Founded year: 1994
• Headcount: 1001-5000
• LinkedIn: midamerican-energy

MidAmerican Energy Company, founded in 1994 and based in Des Moines, Iowa, is a private equity-owned energy provider. The company serves a wide range of customers across Iowa and parts of neighboring states, delivering both electricity and natural gas. MidAmerican is known for its strong emphasis on reliability, boasting a 99.9% reliability record, which is crucial for maintaining customer trust and satisfaction. The company is also dedicated to sustainability, offering various renewable energy options, including wind and solar energy, as well as energy efficiency programs designed to help customers manage their energy consumption effectively. In November 2023, MidAmerican secured $13.14 million in funding, reflecting its ongoing commitment to enhancing its services and infrastructure. This funding supports their initiatives in renewable energy and customer service enhancements, positioning them as a proactive player in the energy sector.

5. Calpine

• Website: calpine.com
• Ownership type: Corporate
• Headquarters: Houston, Texas, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $16.4B, January 2025
• Founded year: 1984
• Headcount: 1001-5000
• LinkedIn: calpine

Calpine Corporation is an energy company based in Houston, Texas, specializing in electricity generation from natural gas and geothermal resources. Founded in 1984, Calpine has grown to operate 77 facilities across the United States, Canada, and Mexico, generating approximately 27,000 megawatts of electricity. This output is sufficient to power around 27 million homes. The company is committed to providing clean and reliable power, focusing on low-carbon energy solutions and community impact. Calpine operates the largest portfolio of cogeneration facilities in the nation and is recognized for its significant geothermal energy production at The Geysers, which contributes 725 megawatts of renewable baseload energy. The company is also investing in innovative technologies, including carbon capture and energy storage, to support the transition to a more sustainable energy future. With a workforce of over 2,400 employees, Calpine continues to prioritize safety, operational excellence, and customer satisfaction in its operations.

6. PacifiCorp

• Website: pacificorp.com
• Ownership type: Corporate
• Headquarters: Portland, Oregon, United States (USA)
• Employee distribution: United States (USA) 99%
• Latest funding: $834.0M, September 2005
• Founded year: 1910
• Headcount: 5001-10000
• LinkedIn: pacificorp

PacifiCorp, founded in 1910 and based in Portland, Oregon, is an electric power company that provides energy generation and transmission services across the western United States. The company operates a substantial portfolio of energy resources, including hydroelectric, wind, solar, thermal, and storage facilities. With a generation capacity of 10,833 megawatts, PacifiCorp is committed to integrating renewable energy into its operations, owning 2,296 megawatts of wind generation capacity. The company actively participates in grid modernization efforts and has developed an Integrated Resource Plan to ensure reliable and cost-effective electric service for its residential, commercial, and industrial customers. PacifiCorp also emphasizes environmental compliance and community engagement, reflecting its dedication to sustainable practices and local involvement.

7. Oncor Electric Delivery

• Website: oncor.com
• Ownership type: Corporate
• Headquarters: Dallas, Texas, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $500.0M, February 2024
• Founded year: 2001
• Headcount: 1001-5000
• LinkedIn: oncor-electric-delivery

Oncor Electric Delivery Company is an electric utility based in Dallas, Texas, specializing in the transmission and distribution of electricity. Founded in 2001, Oncor has grown to employ over 3,500 individuals, all dedicated to ensuring a reliable power supply for its residential and commercial customers. The company is instrumental in maintaining the electric grid and has made strides in supporting the integration of renewable energy sources. Oncor also offers various energy efficiency programs aimed at reducing energy consumption and easing the load on the electric grid. Recently, Oncor secured $500 million in funding, indicating its ongoing investment in infrastructure and service improvements. This financial backing underscores its commitment to enhancing service delivery and adapting to the evolving energy landscape.

8. ComEd

• Website: comed.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $14.6M, August 2024
• Founded year: 1907
• Headcount: 5001-10000
• LinkedIn: comed

Commonwealth Edison (ComEd) is an electric utility company based in Chicago, Illinois, providing electric service to over 3.8 million customers across Northern Illinois. Founded in 1907, ComEd has established itself as a key player in the electric power sector. The company offers a range of services, including various billing options, outage response, and energy-saving programs tailored for both residential and commercial customers. ComEd is dedicated to ensuring a reliable electricity supply while promoting energy efficiency and sustainability. The company is also involved in community initiatives, such as supporting STEM education and environmental programs, which reflect its commitment to social responsibility. Recently, ComEd received a grant of $14.6 million, indicating ongoing investment in its operations and community projects.

9. Otter Tail Power Company

• Website: otpco.com
• Ownership type: Private
• Headquarters: Fergus Falls, Minnesota, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1907
• Headcount: 501-1000
• LinkedIn: otter-tail-power-company

Otter Tail Power Company, a subsidiary of Otter Tail Corporation, is an electric power and manufacturing company based in Fergus Falls, Minnesota. Established in 1907, it has been serving the energy needs of residential and commercial customers in North Dakota, Minnesota, and South Dakota for over a century. The company focuses on providing reliable and low-cost electricity while also engaging in various energy efficiency initiatives. Otter Tail Power Company operates several manufacturing subsidiaries, which adds to its operational breadth. The company is committed to modernizing its infrastructure, as evidenced by its recent upgrades to advanced metering systems. This commitment not only enhances service delivery but also aligns with contemporary energy management practices. With a workforce of approximately 312 employees, Otter Tail Power Company continues to play a significant role in the regional energy landscape.

10. Rocky Mountain Power

• Website: rockymountainpower.net
• Ownership type: Corporate
• Headquarters: Salt Lake City, Utah, United States (USA)
• Employee distribution: United States (USA) 99%
• Latest funding: September 2021
• Founded year: 1912
• Headcount: 5001-10000
• LinkedIn: rocky-mountain-power-inc-

Rocky Mountain Power, founded in 1912 and based in Salt Lake City, Utah, is an energy provider that delivers electricity to a wide range of customers across Utah, Wyoming, and Idaho. The company is a division of PacifiCorp, which is part of Berkshire Hathaway Energy. Rocky Mountain Power is dedicated to renewable energy solutions, offering various programs aimed at energy efficiency and sustainability. They provide services that help customers monitor and manage their energy usage, including options for electric vehicles and customer generation systems. The company actively engages in community initiatives, such as the Blue Sky Community Projects, which support local development and environmental stewardship. Their focus on reliability and safety, alongside their commitment to renewable energy, positions them as a relevant player in the electric power industry.

11. TECO Energy

• Website: tecoenergy.com
• Ownership type: Corporate
• Headquarters: Tampa, Florida, United States (USA)
• Employee distribution: United States (USA) 96%, Other 4%
• Latest funding: $6.5B, September 2015
• Founded year: 1981
• Headcount: 1001-5000
• LinkedIn: teco-energy

TECO Energy Inc. is an energy-related holding company based in Tampa, Florida, founded in 1981. It operates primarily through its subsidiaries, Tampa Electric and Peoples Gas Company, which provide electricity and natural gas services to a wide range of customers. TECO Energy is dedicated to ensuring a reliable energy supply while also offering various support services, including energy efficiency tips and safety information. The company plays a crucial role in the local energy market, serving both residential and commercial sectors. With a workforce of over 3,200 employees, TECO Energy is committed to maintaining high standards of service and safety for its customers. Since its acquisition by Emera Inc. in 2016, TECO Energy has continued to focus on its core mission of delivering energy solutions and enhancing customer experience.

12. Dynegy

• Website: dynegy.com
• Ownership type: Corporate
• Headquarters: Irving, Texas, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: $1.7B, October 2017
• Founded year: 1984
• Headcount: 5001-10000
• LinkedIn: dynegy

Dynegy Inc. is an electric utility company based in Irving, Texas, founded in 1984. The company specializes in providing electricity supply services to residential and business customers, emphasizing transparency and customer satisfaction. Dynegy operates power stations across the United States and is actively involved in municipal aggregation services, allowing communities to negotiate competitive electric supply prices. With a workforce of approximately 780 employees, Dynegy serves millions of customers, particularly in Illinois, Ohio, and Massachusetts. The company is committed to community involvement, supporting local organizations and initiatives. Dynegy's Total Satisfaction Guarantee reflects its dedication to ensuring customer happiness with their services, making them a notable entity in the electric power industry.

13. Maui Electric

• Website: mauielectric.com
• Ownership type: Private
• Headquarters: Kahului, Hawaii, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1921
• Headcount: 201-500
• LinkedIn: mauielectric

Maui Electric, based in Kahului, Hawaii, is a private electric utility company that has been serving the community since its founding in 1921. The company specializes in the generation, transmission, and distribution of electricity to residential and commercial customers across the islands. With a workforce of approximately 201-500 employees, Maui Electric is dedicated to promoting energy efficiency and renewable energy initiatives. They offer various programs aimed at helping customers manage their energy consumption and costs effectively. The company actively engages with the community, supporting sustainability efforts and educational initiatives. Their focus on clean energy solutions and innovative programs reflects their commitment to adapting to the evolving energy landscape in Hawaii.

14. Innogy Renewables UK Ltd

• Website: innogy.com
• Ownership type: Venture Capital
• Headquarters: United States (USA)
• Latest funding: Seed, April 2016
• Founded year: 2008
• Headcount: 501-1000
• LinkedIn: rwe-npower-renewables-ltd

Innogy Renewables UK Ltd is an energy company that specializes in the generation of renewable energy and electricity distribution. Founded in 2008, the company operates primarily in the United Kingdom, focusing on harnessing power from wind, hydro, and solar sources. With a workforce of approximately 388 employees, Innogy serves both business and consumer markets, providing essential energy services tailored to meet diverse electricity needs. The company is part of Innogy SE, which emphasizes sustainable energy solutions and innovation in the energy sector. Their operations contribute significantly to the transition towards cleaner energy, reflecting a commitment to environmental sustainability and energy efficiency.

15. LG&E and KU Energy LLC

• Website: lge-ku.com
• Ownership type: Private
• Headquarters: Louisville, Kentucky, United States (USA)
• Founded year: 1913
• Headcount: 1001-5000
• LinkedIn: lg%26e-%26-ku

LG&E and KU Energy LLC, based in Louisville, Kentucky, is a utilities company that has been operational since 1913. It provides essential electric and natural gas services to both residential and business customers. As a subsidiary of PPL Corporation, LG&E focuses on delivering reliable energy solutions while also emphasizing energy efficiency and renewable energy options. The company has implemented various programs aimed at promoting sustainability, including initiatives for electric vehicles and solar energy. LG&E and KU Energy is dedicated to community engagement and corporate responsibility, ensuring that they not only serve their customers but also contribute positively to the communities in which they operate. Their extensive service offerings and commitment to innovation position them as a relevant entity in the electric power industry.

16. PPL Electric Utilities

• Website: pplelectric.com
• Ownership type: Private
• Headquarters: Allentown, Pennsylvania, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1920
• Headcount: 1001-5000
• LinkedIn: ppl-electric-utilities

PPL Electric Utilities, based in Allentown, Pennsylvania, is an electric utility company that has been serving the region since 1920. With a workforce of around 1,700 employees, the company provides electricity to approximately 1.5 million customers across 29 counties. PPL Electric Utilities is dedicated to ensuring reliable service, having made significant investments in infrastructure that have led to a notable reduction in outages over the past decade. The company actively promotes energy efficiency through various programs and facilitates connections for renewable energy sources, reflecting a commitment to sustainability. Additionally, PPL Electric Utilities engages in community volunteerism, with employees participating in initiatives that support local organizations and environmental efforts. Their customer service has garnered multiple awards, highlighting their focus on customer satisfaction and community involvement.

17. Horizon Power

• Website: horizonpower.com.au
• Ownership type: Private
• Headquarters: United States (USA)
• Employee distribution: Australia 100%
• Latest funding: Other (Grant), $2.9M, March 2024
• Founded year: 2006
• Headcount: 201-500
• LinkedIn: horizon-power

Horizon Power is an energy provider based in Western Australia, established in 2006. The company supplies electricity to residential, industrial, and commercial customers, focusing on the generation, procurement, and distribution of energy. Horizon Power is committed to integrating renewable energy solutions into their offerings, which includes solar and battery options for customers. They also provide financial assistance programs to help customers manage their energy costs. With a workforce of approximately 730 employees, the company plays a vital role in the energy landscape of regional WA. Recently, Horizon Power secured $2,850,000 in funding in March 2024, which underscores their ongoing efforts to innovate and enhance their service delivery.

18. Montana-Dakota Utilities Co.

• Website: montana-dakota.com
• Ownership type: Venture Capital
• Headquarters: Bismarck, North Dakota, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: November 2024
• Founded year: 1924
• Headcount: 1001-5000
• LinkedIn: montana-dakota-utilities-co.

Montana-Dakota Utilities Co., founded in 1924 and headquartered in Bismarck, North Dakota, is a utility provider that delivers both natural gas and electricity services to residential and business customers. The company operates across several states, ensuring that its customers have access to essential utility services. Montana-Dakota is committed to promoting energy efficiency through various programs and rebates, which reflects its dedication to sustainable practices. The company has a workforce of approximately 359 employees and is structured as a venture capital entity. Their recent activities include a price increase approved by the North Dakota Public Service Commission and the establishment of an electric service agreement to support a data mining center, indicating their ongoing engagement in the energy market and responsiveness to customer needs.

19. Homer Electric Association, Inc.

• Website: homerelectric.com
• Ownership type: Private
• Headquarters: Homer, Alaska, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1945
• Headcount: 51-200
• LinkedIn: homer-electric-association-inc-

Homer Electric Association, Inc. is a private electric utility company based in Homer, Alaska, founded in 1945. The company serves the Homer and Kenai areas, providing reliable electricity services to both residential and business customers. With a workforce of approximately 76 employees, Homer Electric emphasizes superior customer service and innovative energy solutions. The cooperative model allows it to focus on the needs of its members and the community, ensuring access to safe and dependable electricity. The company has a strong commitment to operational excellence and community involvement, which enhances its standing in the local energy sector.

20. ITC Holdings Corp.

• Website: itc-holdings.com
• Ownership type: Corporate
• Headquarters: Novi, Michigan, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: Other (Debt), $400.0M, May 2024
• Founded year: 2003
• Headcount: 501-1000
• LinkedIn: itc-holdings-corp

ITC Holdings Corp., based in Novi, Michigan, is an electricity transmission company that operates high-voltage transmission networks across several states in the U.S. Founded in 2003, ITC has established itself as a key player in the energy sector, providing essential infrastructure that enables utilities, cooperatives, and municipalities to deliver reliable energy to their communities. The company focuses on modernizing the power grid to adapt to evolving energy demands and to facilitate the integration of renewable resources. ITC operates in eight states, including Michigan, Iowa, Minnesota, Illinois, Missouri, Kansas, Oklahoma, and Wisconsin, covering approximately 90,000 square miles with over 16,000 circuit miles of transmission lines. Their commitment to safety, reliability, and environmental stewardship is evident in their community initiatives and projects aimed at enhancing the resilience of the power grid. Recently, ITC secured $400 million in funding, which underscores their ongoing efforts to expand and improve their transmission capabilities.

21. Berkshire Hathaway Energy

• Website: brkenergy.com
• Ownership type: Private
• Headquarters: Des Moines, Iowa, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: Other (Debt), $1.0B, April 2022
• Founded year: 1995
• Headcount: 10001+
• LinkedIn: berkshire-hathaway-energy

Berkshire Hathaway Energy, founded in 1995 and based in Des Moines, Iowa, is a private energy company that specializes in electricity generation and natural gas distribution. The company operates a range of energy assets, including solar, wind, hydro, geothermal, and natural gas facilities. It is committed to providing reliable energy services while prioritizing sustainability and environmental stewardship. Berkshire Hathaway Energy's subsidiaries, such as PacifiCorp, MidAmerican Energy Company, and NV Energy, collectively serve over 13 million customers. The company has invested significantly in renewable energy projects, with approximately $7.7 billion allocated to solar initiatives alone. This investment underscores their strategy to enhance clean energy resources and reduce carbon emissions. In 2022, Berkshire Hathaway Energy secured $1 billion in funding, indicating strong financial backing and growth potential.

22. Eviny

• Website: eviny.no
• Ownership type: Private
• Headquarters: United States (USA)
• Employee distribution: Norway 100%
• Founded year: 1920
• Headcount: 1001-5000
• LinkedIn: eviny

Eviny AS is a Norwegian energy company established in 1920, primarily focused on the production and distribution of renewable energy. The company operates 39 hydropower plants and two wind farms, emphasizing its commitment to sustainable energy solutions. Eviny provides a range of services, including electric power generation, telecommunication services, and energy consulting, catering to both businesses and consumers. The company is dedicated to increasing its renewable energy output, with plans to develop additional wind energy projects and thermal energy solutions. Eviny also plays a crucial role in the electrification of various sectors, promoting fossil-free energy options. With a workforce of approximately 431 employees, Eviny is a significant contributor to the energy landscape in Norway, serving over 500,000 customers through its electric vehicle charging stations and other energy services.

Electric Power Insights: Key Companies in the US

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