U.S. Electric Utility Providers and State Regulatory Bodies Directory (All 50 States)

I’ve been watching utilities, regulators, and HVAC pricing move in the same direction for years, and it always comes back to control. If you sell, spec, install, finance, or write about energy systems, you cannot talk about heating and cooling in isolation anymore. Utility rules, state commissions, and local politics decide whether your customer can interconnect, what they get credited for, and how fast electrification will actually roll out. That is why I still watch the same things I tell homeowners to watch, including gas furnaces, the main AC Direct storefront, and bundled air conditioners and gas heat systems. Those products tell you what utilities are rewarding and what they are quietly punishing.

This directory pulls the utility side into the same conversation. Every state runs electric service a little differently. Some lean on a single investor-owned utility that sets the tone for everyone else. Some let municipal systems and co-ops do their own thing. Some have restructured markets where the utility owns the wires and someone else sells the power. If you are doing market entry, energy efficiency programs, solar plus HVAC offers, or rate-sensitive commercial work, you need the regulator and the delivering utility in front of you before you quote anything.

If you’re looking to understand how these utilities tie into the bigger financial picture, it’s worth reading my full 2026–2027 U.S. Solar & HVAC Incentives State-by-State Analysis in a Post-Federal Credit Era. That report breaks down which states will still have real funding after the federal credits end in December 2025—and which ones are running on fumes. Together, these two resources show how policy, pricing, and infrastructure collide in the new energy economy, giving you a clearer path to where the smart HVAC and solar money will actually flow next.

Local HVAC Rebates from Your Power Company

The electric utility sector in the United States is a complex mosaic of different business models, regulatory frameworks, and market structures. Understanding this landscape is critical for market analysis, business development, and strategic planning. At a fundamental level, electric service providers are categorized into three primary types, each with a distinct ownership structure and operational mandate.

• Investor-Owned Utilities (IOUs): These are for-profit, privately-owned companies whose stock is publicly traded. IOUs typically operate as regulated monopolies within defined service territories. They are often the largest utility providers in their respective states, serving a significant majority of residential, commercial, and industrial customers. As subsidiaries of large holding companies like Southern Company, Duke Energy, and American Electric Power (AEP), their operations and strategic investments are subject to comprehensive oversight by state regulatory commissions.1
  
  

• Electric Cooperatives (Co-ops): Also known as Electric Membership Corporations (EMCs) or Rural Electric Cooperatives (RECs), these are not-for-profit, member-owned entities. They were originally established to provide electricity to rural and less-populated areas that were not served by IOUs. Each customer is a member and owner of the cooperative. While they are subject to certain state and federal regulations, the degree of state-level rate regulation can vary significantly compared to IOUs.4
  
  

• Municipal Utilities: These are non-profit utilities owned and operated by government entities, such as cities, counties, or special utility districts. They are governed by local city councils or elected utility boards and are primarily accountable to the citizens in their jurisdiction. In many states, municipal utilities are exempt from rate regulation by the state public utility commission, giving them more autonomy in setting local electricity prices and policies.7

 

The Role of Regulatory Commissions

 

State-level regulatory bodies, most often called Public Utility Commissions (PUCs) or Public Service Commissions (PSCs), are the primary government agencies responsible for overseeing the utility sector. Their core mission is to balance the interests of consumers—who require safe, reliable, and reasonably priced services—with the need for utilities to remain financially viable and capable of making necessary infrastructure investments.10

These quasi-judicial bodies approve or deny rate increase requests, set service quality standards, and authorize the construction of major new facilities like power plants and transmission lines. The structure of these commissions varies by state; some have commissioners appointed by the governor, while others have commissioners who are directly elected by the public, a distinction that can significantly influence the regulatory climate.12

 

Market Dynamics: Regulation vs. Deregulation

 

The U.S. is divided between states with traditionally regulated electricity markets and those that have implemented some form of deregulation or "energy choice." In a traditionally regulated state, a single utility is responsible for generating, transmitting, and distributing electricity to all customers in its service area. In a deregulated state, these functions are unbundled. While a single utility still owns and operates the local grid (the poles and wires), customers can choose to purchase the electricity itself from a variety of competitive Retail Electric Providers (REPs). This report will primarily focus on the distribution utilities that are responsible for delivering power, but it is important to note this structural difference, which is particularly prominent in states like Texas, Illinois, and Pennsylvania.15

 

State-by-State Directory of Electric Utility Providers

1. Alabama

 

Regulatory Oversight

 

The Alabama Public Service Commission (PSC) is the primary regulatory body for Alabama's investor-owned utilities. It is composed of three members who are elected statewide to four-year terms.12 The PSC's mandate is to ensure a balance between regulated companies and consumers, providing for safe, adequate, and reliable services at equitable and economical rates.18 While the PSC does not directly regulate the rates of electric cooperatives or municipal utilities, its decisions concerning the state's largest utility, Alabama Power, often establish precedents that influence the policies and practices of these other providers.10

• Agency: Alabama Public Service Commission (PSC)

• URL: https://psc.alabama.gov/ 19

The regulatory environment in Alabama is notable for the close relationship between the state's dominant investor-owned utility, Alabama Power (a subsidiary of Southern Company), and its elected regulators. The composition of the PSC, consisting of three elected officials from the same political party, mirrors that of neighboring Georgia, which regulates another major Southern Company subsidiary.10 This dynamic often results in regulatory decisions that align with the incumbent utility's objectives. For example, the PSC has historically approved the majority of Alabama Power's requests and has defended policies, such as a fee on customer-owned solar generation, that can discourage the adoption of distributed energy resources.10 This suggests a regulatory climate that prioritizes the financial stability of the monopoly utility, which can create significant barriers for businesses focused on consumer-side energy solutions that reduce reliance on the grid. A successful market strategy in Alabama often requires not just a competitive product but also a sophisticated approach to navigating the state's political and regulatory landscape.

 

Directory of Electric Companies

 

 

2. Alaska

Regulatory Oversight

 

In Alaska, public utilities are regulated by the Regulatory Commission of Alaska (RCA). The RCA is tasked with certifying providers of public utility and pipeline services and ensuring they deliver safe and adequate facilities and services at "just and reasonable rates, terms, and conditions".20 Its jurisdiction covers a broad range of utilities, including electric, natural gas, water, and refuse services.20

• Agency: Regulatory Commission of Alaska (RCA)

• URL: http://rca.alaska.gov/ 21

Alaska's electric utility sector is fundamentally shaped by its vast and sparsely populated geography. Unlike the interconnected grid systems common in the lower 48 states, Alaska's power infrastructure is a patchwork of isolated microgrids. This geographic fragmentation has prevented the emergence of a single dominant utility and has instead fostered a hyper-localized model of electricity provision. The state's utility list is characterized by a large number of small, community-specific municipal and cooperative entities, often named after the remote towns or villages they serve, such as Kwig Power Company or Manokotak Power.7 Major industry groups representing large investor-owned utilities, such as the Edison Electric Institute, have minimal representation, listing only one member company in the state.1 This market structure means that a one-size-fits-all business approach is ineffective. Any strategy for market entry or partnership must be tailored to the unique scale, resources, and needs of dozens of independent operators. The existence of joint action agencies, like the Alaska Railbelt Energy Authority, points to a mechanism for these smaller utilities to aggregate their resources and purchasing power, making these agencies key points of contact for larger-scale energy projects or vendor relationships.7

 

Directory of Electric Companies

 

 

3. Arizona

Regulatory Oversight

 

The Arizona Corporation Commission (ACC) functions as the state's public utilities commission. It is composed of five commissioners who are elected to statewide office.13 The ACC is constitutionally mandated to oversee investor-owned electric, natural gas, water, and telecommunications utilities, with the goal of ensuring that services are safe, reliable, and affordable for Arizona's consumers.23

• Agency: Arizona Corporation Commission (ACC)

• URL: https://www.azcc.gov/ 24

Arizona's electricity market presents a notable duality, particularly within its primary economic hub, the Phoenix metropolitan area. The market is dominated by two major entities that operate under fundamentally different models. Arizona Public Service (APS) is the state's largest investor-owned utility, serving customers across 11 of 15 counties, and its rates and policies are fully regulated by the elected Arizona Corporation Commission.23 Operating in adjacent territories is the Salt River Project (SRP), a large public power utility that is not subject to ACC rate regulation and is instead governed by its own board.27

This division creates two distinct regulatory and business environments within a single metropolitan region. For businesses and residents, this means that energy costs, renewable energy programs, and efficiency incentives can differ substantially depending on which side of a service territory boundary they are located. For companies seeking to enter the Arizona energy market, this structure requires a bifurcated strategy. Engaging with APS necessitates navigating the formal, quasi-judicial proceedings of the ACC, while engaging with SRP involves a more direct, corporate-style relationship with the utility's management and governing board.

 

Directory of Electric Companies

 

 

4. Arkansas

Regulatory Oversight

 

The Arkansas Public Service Commission (APSC) is the state agency responsible for regulating the rates and services of public utilities, including investor-owned electric companies.28 The APSC's stated mission is to ensure that utilities provide "safe, adequate and reliable utility services at just and reasonable rates" to the public.29

• Agency: Arkansas Public Service Commission (APSC)

• URL: https://apsc.arkansas.gov/ 29

The electric market in Arkansas is significantly influenced by the presence of Entergy Arkansas, a subsidiary of the multi-state holding company Entergy Corporation.31 This corporate structure means that Entergy Arkansas does not operate in isolation; its major strategic initiatives, capital investments, and resource planning are often coordinated at a regional level across the parent company's entire service territory, which also includes parts of Louisiana, Mississippi, and Texas.1 

Consequently, major decisions regarding grid modernization, generation portfolio changes (such as shifts from coal to renewables), and responses to federal energy policy are likely driven by corporate-wide financial and operational objectives rather than by factors exclusively within Arkansas. For market analysts and policymakers, this implies that a comprehensive understanding of the Arkansas utility landscape requires monitoring not only the dockets at the APSC but also the regulatory activities and strategic announcements of Entergy Corporation and its other operating companies in neighboring states. A major initiative launched by Entergy in Louisiana, for example, can serve as a strong indicator of a similar proposal being introduced in Arkansas in the near future.

 

Directory of Electric Companies

 

Note: Arkansas is also served by numerous electric cooperatives, which are not detailed with URLs in the provided source material.

 

5. California

Regulatory Oversight

 

The California Public Utilities Commission (CPUC) is the regulatory agency with jurisdiction over California's privately owned electric, natural gas, water, and telecommunications companies. The CPUC's mission is to protect consumers by ensuring safe and reliable utility service at reasonable rates, while also working to achieve the state's ambitious environmental and economic goals.11

• Agency: California Public Utilities Commission (CPUC)

• URL: http://www.cpuc.ca.gov 11

California's electric market is arguably the most complex and dynamic in the nation, a direct consequence of the state's aggressive decarbonization policies. The traditional utility model has been fundamentally reshaped, resulting in a multi-layered market structure. This landscape includes massive investor-owned utilities (IOUs) like Pacific Gas and Electric (PG&E), Southern California Edison (SCE), and San Diego Gas & Electric (SDG&E), which have historically dominated the market.35 

However, a significant and growing portion of the market is now served by Community Choice Aggregators (CCAs). These are local government entities that have taken over the responsibility of purchasing electricity on behalf of their residents, often with a mandate to procure a higher percentage of renewable energy than the incumbent IOU.35 In areas served by a CCA, the IOU's role is largely reduced to that of a transmission and distribution utility, responsible for maintaining the grid and providing billing services, while the CCA manages the power portfolio.36 

This fragmentation means that California is not a single energy market but dozens of distinct sub-markets. A company selling wholesale renewable power must now engage with numerous individual CCAs, each with its own procurement strategy, in addition to the large IOUs. This bifurcated customer landscape—where IOUs are the primary customers for grid infrastructure and CCAs are the primary customers for power purchase agreements—is the defining characteristic of California's modern energy sector.

 

Directory of Electric Companies

 

Note: The California Energy Commission provides an extensive list of additional Municipal, Cooperative, and Community Choice Aggregator providers.35

 

6. Colorado

Regulatory Oversight

 

The Colorado Public Utilities Commission (PUC), a division of the Department of Regulatory Agencies (DORA), regulates the state's investor-owned electric, gas, and water utilities.37 The PUC's mission is to ensure that Colorado residents receive safe, reliable, and reasonably-priced utility services. It also has partial regulatory authority over municipal utilities and electric associations.37

• Agency: Colorado Public Utilities Commission (PUC)

• URL: https://puc.colorado.gov/ 40

The electric utility market in Colorado is characterized by a mix of a large, dominant investor-owned utility and several significant rural electric cooperatives serving the state's growing Front Range and other regions. Xcel Energy is the primary provider of electricity and natural gas in the major metropolitan areas, including Denver.37 Alongside Xcel, cooperatives such as United Power and CORE Electric Cooperative (formerly Intermountain Rural Electric Association) serve large swaths of suburban and rural territory, making them major players in the state's energy landscape.37

 

Directory of Electric Companies

 

 

7. Connecticut

Regulatory Oversight

 

The Public Utilities Regulatory Authority (PURA) is the state agency responsible for regulating Connecticut's investor-owned electric, natural gas, and water companies.43 PURA operates within the Department of Energy and Environmental Protection and is tasked with ensuring that utilities provide safe, reliable, and affordable service.44 Its jurisdiction includes setting rates for the state's two main investor-owned electric distribution companies, Eversource Energy and The United Illuminating Company.45

• Agency: Public Utilities Regulatory Authority (PURA)

• URL: https://portal.ct.gov/pura/ 46

Connecticut's electric market is dominated by two large investor-owned utilities that serve distinct regions of the state. Eversource Energy is the larger of the two, while The United Illuminating Company (UI) serves southern areas, including the cities of New Haven and Bridgeport.45 In addition to these IOUs, the state is home to several municipal electric companies that operate independently and serve their local communities.8

 

Directory of Electric Companies

 

 

8. Delaware

Regulatory Oversight

 

The Delaware Public Service Commission (PSC) is a quasi-judicial body that regulates the state's investor-owned public utilities, including electric, natural gas, water, and cable services.48 The PSC's authority includes controlling the distribution services of regulated electric utilities like Delmarva Power.49

• Agency: Delaware Public Service Commission (PSC)

• URL: https://depsc.delaware.gov/ 49

Delaware's electric utility landscape is a mix of an investor-owned utility, a cooperative, and a joint action agency representing municipal systems. Delmarva Power, an Exelon Corporation company, is the state's primary IOU, serving a large portion of the state.50 The Delaware Electric Cooperative serves its member-owners in more rural areas.50 A unique entity, the Delaware Municipal Electric Corporation (DEMEC), acts as a wholesale electric utility and joint action agency for nine municipal electric distribution utilities, allowing smaller towns to benefit from combined buying power and shared resources.50

 

Directory of Electric Companies

 

 

9. Florida

Regulatory Oversight

 

The Florida Public Service Commission (FPSC) regulates the state's investor-owned electric, natural gas, and water utilities.52 The commission consists of five members appointed by the Governor and confirmed by the Senate.53 While the FPSC sets rates and oversees service for IOUs, it has more limited jurisdiction over the state's numerous municipal and cooperative electric utilities, primarily concerning rate structure, territorial boundaries, and power supply planning.52

• Agency: Florida Public Service Commission (FPSC)

• URL: https://www.floridapsc.com/ 53

Florida's rapidly growing population is served by several large investor-owned utilities. Florida Power & Light Company (FPL) is the largest in the state, serving a significant portion of the peninsula.55 Other major IOUs include Duke Energy Florida, Tampa Electric Company (TECO), and Gulf Power Company (which is now part of FPL).55 The state also has a robust network of municipal utilities and rural electric cooperatives that serve millions of customers outside the IOU territories.53

 

Directory of Electric Companies

 

 

10. Georgia

Regulatory Oversight

 

The Georgia Public Service Commission (PSC) is a five-member elected body responsible for ensuring that consumers receive safe, reliable, and reasonably priced electric, natural gas, and telecommunications services.57 The PSC fully regulates the state's investor-owned electric utilities, most notably Georgia Power Company.59 It has limited jurisdiction over the state's Electric Membership Cooperatives (EMCs) and municipal systems.2

• Agency: Georgia Public Service Commission (PSC)

• URL: https://psc.ga.gov/ 59

Georgia's electric industry is structured around three main types of providers. The investor-owned sector is dominated by Georgia Power Company, a subsidiary of the Southern Company, which serves approximately 2.7 million customers in 155 of the state's 159 counties.2 

The state's 42 Electric Membership Cooperatives are primarily supplied with wholesale power by Oglethorpe Power Corporation (OPC), the nation's largest electric cooperative.2 Finally, 48 municipal electric utilities receive their power through the Municipal Electric Authority of Georgia (MEAG), a public generation and transmission corporation.2 This tripartite structure creates distinct regulatory and operational environments across the state.

 

Directory of Electric Companies

 

 

11. Hawaii

Regulatory Oversight

 

The Hawaii Public Utilities Commission (PUC) regulates the state's electric, gas, telecommunications, and water utilities.60 The PUC is composed of three commissioners and is tasked with ensuring utility services are safe, reliable, and affordable while also supporting the state's transition to a 100% renewable energy future.60

• Agency: Hawaii Public Utilities Commission (PUC)

• URL: https://puc.hawaii.gov/ 60

Hawaii's electric grid is unique in that each of its main islands operates as an independent, isolated grid, with no interconnection between them.62 The market is dominated by the Hawaiian Electric Company (HECO) and its subsidiaries, Maui Electric Company (MECO) and Hawaii Electric Light Company (HELCO), which collectively serve about 95% of the state's population on the islands of Oahu, Maui, Lanai, Molokai, and Hawaii Island.62 The island of Kauai is served by the Kauai Island Utility Cooperative (KIUC), the only electric cooperative in the state.62

 

Directory of Electric Companies

 

 

12. Idaho

Regulatory Oversight

 

The Idaho Public Utilities Commission (PUC) is responsible for regulating the intrastate operations of investor-owned electric, gas, water, and telecommunications utilities.64 The commission does not regulate utility cooperatives or utilities operated by municipalities.65

• Agency: Idaho Public Utilities Commission (PUC)

• URL: https://puc.idaho.gov/ 66

Idaho's electricity is supplied by a mix of large investor-owned utilities, rural electric cooperatives, and municipal electric utilities. The major IOUs serving the state are Idaho Power Company, Avista Utilities, and Rocky Mountain Power.9 These are complemented by a significant number of cooperatives, such as Clearwater Power and Kootenai Electric Cooperative, and municipal systems like Idaho Falls Power, which serve various regions across the state.9

 

Directory of Electric Companies

 

 

13. Illinois

Regulatory Oversight

 

The Illinois Commerce Commission (ICC) is a quasi-judicial body that regulates public utility services in Illinois, including electric, natural gas, telecommunications, and water.68 The ICC's mission is to balance the interests of consumers and utilities to ensure the provision of adequate, efficient, reliable, safe, and least-cost public utility services.69

• Agency: Illinois Commerce Commission (ICC)

• URL: https://www.icc.illinois.gov/ 69

Illinois has a deregulated electricity market, meaning consumers can choose their electricity supplier.70 However, the delivery of that electricity is still handled by regulated utility companies that own and maintain the grid infrastructure. The state is primarily served by two major distribution utilities: Commonwealth Edison (ComEd), which serves Chicago and most of northern Illinois, and Ameren Illinois, which serves central and southern Illinois.15 A smaller portion of the state is served by MidAmerican Energy.15

 

Directory of Electric Companies

 

 

14. Indiana

Regulatory Oversight

 

The Indiana Utility Regulatory Commission (IURC) regulates electric, natural gas, telecommunications, water, and sewer utilities in the state.71 The commission is led by five commissioners appointed by the governor.71 The IURC's primary function is to act as a surrogate for competition, overseeing utility issues to protect the public interest.72

• Agency: Indiana Utility Regulatory Commission (IURC)

• URL: https://www.in.gov/iurc/ 73

Indiana's electric market is served by five major investor-owned utilities: Duke Energy Indiana (the state's largest), AES Indiana (formerly Indianapolis Power & Light), Indiana Michigan Power (an AEP company), Northern Indiana Public Service Company (NIPSCO), and CenterPoint Energy (formerly Vectren).71 These companies provide service to the vast majority of the state's residents and businesses.

 

Directory of Electric Companies

 

 

15. Iowa

Regulatory Oversight

 

The Iowa Utilities Board (IUB) is a three-member, governor-appointed commission that regulates the rates and services of electric, natural gas, water, and some telecommunication providers.75 The IUB's mission is to ensure that reasonably priced, reliable, environmentally responsible, and safe utility services are available to all Iowans.76

• Agency: Iowa Utilities Board (IUB)

• URL: https://iub.iowa.gov/ 77

The electric market in Iowa is dominated by two major investor-owned utilities: MidAmerican Energy Company and Alliant Energy (which operates as Interstate Power and Light Company in the state).75 These two companies serve the majority of Iowa's electric customers. ITC Midwest operates as a transmission-only utility, managing a significant portion of the high-voltage transmission lines in the state.78

 

Directory of Electric Companies

 

 

16. Kansas

Regulatory Oversight

 

The Kansas Corporation Commission (KCC) is a three-member body appointed by the governor, with the responsibility of regulating natural gas, electricity, telephone, and transportation services.79 The KCC's mission is to ensure that vendors provide safe, adequate, and reliable services at reasonable rates, balancing the needs of consumers and industry.79

• Agency: Kansas Corporation Commission (KCC)

• URL: https://kcc.ks.gov/ 81

The electric landscape in Kansas features a mix of a large investor-owned utility and a widespread network of rural electric cooperatives. Evergy, formed from the merger of Westar Energy and Kansas City Power & Light, is the state's largest electric utility.1 Beyond Evergy's service territory, a significant portion of the state, particularly in central and western Kansas, is served by numerous member-owned cooperatives such as Midwest Energy, Sunflower Electric Power Corporation, and Pioneer Electric Cooperative.5

 

Directory of Electric Companies

 

 

17. Kentucky

Regulatory Oversight

 

The Kentucky Public Service Commission (PSC) is a three-member board appointed by the governor that regulates investor-owned electric, natural gas, telecommunications, and certain water and sewage utilities.83 The PSC's duties include overseeing utility rates to ensure they are fair and reasonable, and that services are adequate, efficient, and reliable.84 The PSC does not have authority over utilities served by the Tennessee Valley Authority (TVA).83

• Agency: Kentucky Public Service Commission (PSC)

• URL: https://psc.ky.gov/ 85

Kentucky's electric service is provided by a few large, regulated utilities. Louisville Gas and Electric Company (LG&E) and Kentucky Utilities Company (KU), both part of the PPL Corporation family, are the dominant providers, serving over 1.3 million customers across more than 90 counties.3 Duke Energy also serves a portion of the state, and Kentucky Power (an AEP company) serves customers in eastern Kentucky.3

 

Directory of Electric Companies

 

 

18. Louisiana

Regulatory Oversight

 

The Louisiana Public Service Commission (LPSC) is a constitutionally established regulatory agency composed of five elected commissioners who serve overlapping six-year terms.88 The LPSC is dedicated to serving the public interest by ensuring safe, reliable, and reasonably priced services from the public utilities and common carriers under its jurisdiction.89

• Agency: Louisiana Public Service Commission (LPSC)

• URL: https://www.lpsc.louisiana.gov/ 89

The electric utility market in Louisiana is dominated by a few large companies. Entergy is the largest electric utility in the state, serving 58 parishes through its operating companies, Entergy Louisiana and Entergy New Orleans.31 Cleco Power serves 23 parishes, primarily in the central part of the state, while Southwestern Electric Power Company (SWEPCO), an AEP company, serves the northwestern region, including Shreveport.90 Dixie Electric Membership Corporation (DEMCO) is a major cooperative serving seven parishes in southeast Louisiana.90

 

Directory of Electric Companies

 

 

19. Maine

Regulatory Oversight

 

The Maine Public Utilities Commission (MPUC) is a three-member body that regulates the state's water, electric, natural gas, and telecommunications utilities.92 Commissioners are nominated by the governor and confirmed by the state senate for staggered six-year terms.92 The MPUC's mission is to ensure that Maine consumers receive safe, adequate, and reliable services at just and reasonable rates.93

• Agency: Maine Public Utilities Commission (MPUC)

• URL: https://www.maine.gov/mpuc/ 94

Maine's electric distribution system is dominated by two large investor-owned utilities. Central Maine Power (CMP) serves the southern and central parts of the state, while Versant Power serves northern and eastern Maine.95 In addition to these two major players, Maine's electric grid is supported by several smaller consumer-owned utilities, including electric cooperatives and municipal power districts like Eastern Maine Electric Co-op and Houlton Water Company.95

 

Directory of Electric Companies

 

 

20. Maryland

Regulatory Oversight

 

The Maryland Public Service Commission (PSC) is an independent agency that regulates public utilities, including natural gas, electricity distribution, local telephone, water, and sewage disposal companies.97 The five PSC commissioners are appointed by the governor to staggered five-year terms.97 The PSC sets tariff rates, approves the construction of new generating plants and transmission lines, and licenses retail electricity suppliers.97

• Agency: Maryland Public Service Commission (PSC)

• URL: https://www.psc.state.md.us/ 98

Maryland's electric service is provided by several large investor-owned utilities and a number of electric cooperatives and municipal systems. Baltimore Gas & Electric Company (BGE), an Exelon subsidiary, is the largest, serving Baltimore City and surrounding counties.99 Other major providers include Potomac Electric Power Company (Pepco) in the suburbs of Washington, D.C., Delmarva Power on the Eastern Shore, and Potomac Edison in the western part of the state.99 Southern Maryland Electric Cooperative (SMECO) is one of the largest electric cooperatives in the nation.99

 

Directory of Electric Companies

 

 

21. Massachusetts

Regulatory Oversight

 

The Massachusetts Department of Public Utilities (DPU) is an adjudicatory agency responsible for the oversight of investor-owned electricity, natural gas, and water utilities in the Commonwealth.101 The DPU's mission is to ensure that utility consumers are provided with the most reliable service at the lowest possible cost, while also protecting public safety.101

• Agency: Department of Public Utilities (DPU)

• URL: https://www.mass.gov/orgs/department-of-public-utilities 102

The electric utility market in Massachusetts is dominated by three investor-owned utilities. Eversource (which absorbed the former NSTAR and Western Massachusetts Electric Co.) is the largest, serving 1.4 million customers in eastern and central Massachusetts, including the Boston area.103 National Grid serves over 1.2 million customers in 168 communities throughout the state. Unitil serves a smaller number of customers in the north-central part of the state.103 Massachusetts is a deregulated state, allowing customers to choose their electricity supplier, but these three utilities remain responsible for energy delivery.104

 

Directory of Electric Companies

 

 

22. Michigan

Regulatory Oversight

 

The Michigan Public Service Commission (MPSC) is a three-member board appointed by the governor to regulate public utilities, including electric power, telecommunications, and natural gas services.105 The MPSC's mission is to protect the public by ensuring safe, reliable, and accessible energy and telecommunications services at reasonable rates for Michigan's residents.105

• Agency: Michigan Public Service Commission (MPSC)

• URL: https://www.michigan.gov/mpsc 106

Michigan's electric service is dominated by two large investor-owned utilities that serve the majority of the state's population in the Lower Peninsula. Consumers Energy and DTE Electric Company are the primary providers.107 Other key utilities include Indiana Michigan Power (an AEP company) in the southwest, and several providers serving the Upper Peninsula, such as Upper Peninsula Power Company (UPPCO) and Upper Michigan Energy Resources Corporation.107

 

Directory of Electric Companies

 

 

23. Minnesota

Regulatory Oversight

 

The Minnesota Public Utilities Commission (MPUC) is an independent, five-member regulatory agency responsible for the oversight of electric, natural gas, and telecommunications services.109 Appointed by the governor, the commissioners' primary mission is to ensure that Minnesota residents have access to safe, adequate, and efficient utility services at fair and reasonable rates.109

• Agency: Minnesota Public Utilities Commission (MPUC)

• URL: https://mn.gov/puc/ 110

Minnesota's electric utility market includes several large investor-owned utilities, as well as numerous municipal systems. Xcel Energy is a major provider, serving Minneapolis and other large areas.111 Minnesota Power, an ALLETE company, serves the northeastern part of the state.112 Other key providers include CenterPoint Energy and Great Plains Natural Gas Company, though they are more focused on gas distribution.111 The state also has a significant number of municipal utilities, such as Rochester Public Utilities and Moorhead Public Service.111

 

Directory of Electric Companies

 

 

24. Mississippi

Regulatory Oversight

 

The Mississippi Public Service Commission (MPSC) is a three-member elected body that regulates telecommunications, electric, gas, water, and sewer utilities.113 The commission is charged with ensuring that rates are just and reasonable and that services are reasonably adequate.113 The MPSC's Electric Division specifically represents the public interest in the regulation of the state's two major investor-owned electric utilities.115

• Agency: Mississippi Public Service Commission (MPSC)

• URL: https://www.psc.ms.gov/ 114

The electric utility landscape in Mississippi is dominated by two large investor-owned utilities. Entergy Mississippi, Inc. and Mississippi Power Company (a subsidiary of Southern Company) are the primary providers of electricity in the state and are fully regulated by the MPSC.31 The state also has a number of electric cooperatives and municipal systems over which the MPSC has limited regulatory authority.115

 

Directory of Electric Companies

 

 

25. Missouri

Regulatory Oversight

 

The Missouri Public Service Commission (PSC) regulates the state's investor-owned telephone, electric, natural gas, steam, water, and sewer utilities.116 The PSC commissioners are appointed by the governor. The agency's primary role is to ensure that regulated utilities provide safe and adequate service at just and reasonable rates.117

• Agency: Missouri Public Service Commission (PSC)

• URL: https://psc.mo.gov/ 117

Missouri's electric service is provided by four main regulated, investor-owned utilities. Ameren Missouri is one of the largest, serving a significant portion of the state.118 The western part of the state is served by Evergy, which operates under two entities: Evergy Missouri Metro (formerly Kansas City Power & Light) and Evergy Missouri West.118 The Empire District Electric Company, which does business as Liberty Utilities, serves the southwestern corner of the state.118

 

Directory of Electric Companies

 

 

26. Montana

Regulatory Oversight

 

The Montana Public Service Commission (PSC) is a five-member elected body that regulates private, investor-owned natural gas, electric, telephone, water, and private sewer companies.120 The commissioners are elected from five distinct districts and serve staggered four-year terms.120 The PSC's role is to balance the long-term interests of utility companies and the customers they serve.120

• Agency: Montana Public Service Commission (PSC)

• URL: https://psc.mt.gov/ 122

The regulated electric utility sector in Montana is concentrated among a few key investor-owned companies. NorthWestern Energy is the largest electric utility in the state.123 Other regulated providers include Montana-Dakota Utilities (MDU) and Black Hills Power, Inc., which serve various regions across Montana.123

 

Directory of Electric Companies

 

 

27. Nebraska

Regulatory Oversight

 

Nebraska has a unique regulatory structure for its electric utilities. The Nebraska Power Review Board was created to regulate the state's consumer-owned electric utility industry.124 Unlike any other state, Nebraska is served entirely by public power entities, including public power districts, cooperatives, and municipalities.125 The Board's role is to avoid and eliminate conflict and competition between these providers and to approve service areas and the construction of major generation and transmission facilities.124

• Agency: Nebraska Power Review Board

• URL: https://powerreview.nebraska.gov/ 125

As the only state served entirely by public power, Nebraska's electric landscape consists of a network of consumer-owned utilities. The largest of these are the Omaha Public Power District (OPPD), which serves the Omaha metropolitan area, and the Nebraska Public Power District (NPPD), which serves a large portion of the rest of the state, either directly or as a wholesale provider.126 Other significant providers include the Lincoln Electric System (LES) and numerous rural public power districts and cooperatives.126

 

Directory of Electric Companies

 

 

28. Nevada

Regulatory Oversight

 

The Public Utilities Commission of Nevada (PUCN) regulates public companies engaged in electric, natural gas, telephone, water, and sewer services.128 The PUCN regulates the service territories of all electric utilities but only sets the rates and oversees the service quality of investor-owned utilities, not municipally-owned or cooperative utilities.129

• Agency: Public Utilities Commission of Nevada (PUCN)

• URL: https://puc.nv.gov/ 130

The vast majority of Nevada's electric customers are served by a single investor-owned utility. NV Energy provides electricity to approximately 90% of the state, including the Las Vegas and Reno-Sparks metropolitan areas.129 The remainder of the state is served by a number of rural electric cooperatives and a few small municipal utilities, such as Wells Rural Electric Company and Overton Power District.132

 

Directory of Electric Companies

 

 

29. New Hampshire

Regulatory Oversight

 

The New Hampshire Public Utilities Commission (NHPUC) is a three-member government agency with jurisdiction over electric, natural gas, water, and sewer utilities.133 Commissioners are appointed by the governor and confirmed by the Governor's Council for staggered six-year terms.133 The agency was formerly known as the Public Service Commission.133

• Agency: New Hampshire Public Utilities Commission (NHPUC)

• URL: https://www.puc.nh.gov/ 133

New Hampshire's electric service is provided by four main distribution utilities. Eversource Energy is the largest, serving approximately 71% of the state's customers.134 The remaining customers are served by Liberty Utilities, Unitil Energy Systems, Inc. (UES), and the New Hampshire Electric Cooperative, Inc. (NHEC), which is the state's primary member-owned cooperative.134

 

Directory of Electric Companies

 

 

30. New Jersey

Regulatory Oversight

 

The New Jersey Board of Public Utilities (NJBPU) is a five-member regulatory authority that oversees the state's natural gas, electricity, water, telecommunications, and cable television utilities.136 The Board's mandate is to ensure safe, adequate, and proper utility services at reasonable rates for customers.136 Commissioners are appointed by the governor for six-year terms.136

• Agency: New Jersey Board of Public Utilities (NJBPU)

• URL: https://www.nj.gov/bpu/ 137

New Jersey's electric grid is operated by four main regulated utilities. Public Service Electric and Gas Company (PSE&G) is one of the largest and serves a significant portion of the state's population.138 Jersey Central Power & Light (JCP&L), a FirstEnergy company, serves central and northern New Jersey.138 Atlantic City Electric, an Exelon company, serves the southern part of the state, and Rockland Electric Company (a subsidiary of Orange & Rockland) serves a small portion of northern New Jersey.138

 

Directory of Electric Companies

 

 

31. New Mexico

Regulatory Oversight

 

The New Mexico Public Regulation Commission (NMPRC) is the state agency responsible for regulating utilities, telecommunications, and, historically, other industries.142 Following a 2020 constitutional amendment, the commission transitioned from a five-member elected body to a three-member body appointed by the governor with Senate consent.143 The NMPRC's charge is to ensure fair and reasonable rates and adequate services from the utilities it oversees.142

• Agency: New Mexico Public Regulation Commission (NMPRC)

• URL: https://www.prc.nm.gov/ 144

New Mexico's electricity is provided by a mix of investor-owned utilities and member-owned cooperatives. Public Service Company of New Mexico (PNM) is the state's largest electricity provider, serving major population centers including Albuquerque, Santa Fe, and Rio Rancho.145 Rural communities across the state are largely served by cooperatives, such as the Central New Mexico Electric Cooperative (CNMEC), which serves over 13,000 members across 11 counties.145

 

Directory of Electric Companies

 

 

32. New York

Regulatory Oversight

 

The New York State Public Service Commission (PSC) is the state's public utilities commission, regulating the electric, gas, water, and telecommunication industries.148 It consists of up to seven members appointed by the governor with the consent of the state Senate.149 The PSC operates as part of the Department of Public Service, and its primary function is to ensure safe and adequate service at just and reasonable rates.148

• Agency: New York State Public Service Commission (PSC)

• URL: https://dps.ny.gov/ 148

New York's vast and diverse population is served by several major investor-owned utilities. Consolidated Edison (Con Edison) provides service to New York City and Westchester County.150 National Grid serves large portions of upstate and western New York.150 Other significant providers include New York State Electric & Gas (NYSEG) and Rochester Gas & Electric (RG&E), both owned by Avangrid; Orange & Rockland; and PSEG Long Island, which operates the electric system on Long Island under a contract with the Long Island Power Authority.150

 

Directory of Electric Companies

 

 

33. North Carolina

Regulatory Oversight

 

The North Carolina Utilities Commission (NCUC) is a seven-member government agency that regulates public utilities, including electric, natural gas, water, and sewer services.152 Commissioners are appointed by the governor to six-year terms and confirmed by the General Assembly.152 The NCUC is empowered to make rules and establish utility rates.152 Electric Membership Cooperatives and Municipal Electric Providers are not regulated by the Commission.153

• Agency: North Carolina Utilities Commission (NCUC)

• URL: https://www.ncuc.gov/ 154

The regulated electric market in North Carolina is dominated by subsidiaries of Duke Energy. Duke Energy Carolinas and Duke Energy Progress are the two largest electric utilities in the state, serving distinct but vast territories.152 Dominion Energy North Carolina provides service to the northeastern part of the state.155 A few smaller regulated utilities, such as New River Light and Power, also operate within the state.153

 

Directory of Electric Companies

 

 

34. North Dakota

Regulatory Oversight

 

The North Dakota Public Service Commission (PSC) is a constitutional agency composed of three commissioners elected on a statewide basis to staggered six-year terms.156 The agency has statutory authority over utilities, telecommunications, railroads, and pipeline safety, among other areas. It gained authority over all public utilities, including water, gas, and electricity, in 1919.156

• Agency: North Dakota Public Service Commission (PSC)

• URL: https://www.psc.nd.gov/ 157

North Dakota's electric service is provided by a mix of investor-owned utilities and rural electric cooperatives. Major providers include Xcel Energy, Montana-Dakota Utilities, and Otter Tail Power Company.158 The state also has a strong cooperative presence, with entities like Verendrye Electric Cooperative and Cass County Electric Cooperative serving large rural territories.158

 

Directory of Electric Companies

 

 

35. Ohio

Regulatory Oversight

 

The Public Utilities Commission of Ohio (PUCO) is the state agency responsible for setting the rates and regulations that utility companies must follow.161 Its jurisdiction covers electric, natural gas, telecommunications, and water utilities. The PUCO also provides consumer assistance for utility-related questions and concerns.161

• Agency: Public Utilities Commission of Ohio (PUCO)

• URL: https://puco.ohio.gov 162

Ohio has a deregulated electricity market, which allows customers to choose their electricity generation supplier.16 The delivery of electricity is managed by several large investor-owned utilities. The primary utilities include American Electric Power (AEP) Ohio, Duke Energy Ohio, and the subsidiaries of FirstEnergy (including Ohio Edison, The Illuminating Company, and Toledo Edison).1

 

Directory of Electric Companies

 

 

36. Oklahoma

Regulatory Oversight

 

The Oklahoma Corporation Commission (OCC) is the public utilities commission for the state, run by three statewide elected commissioners.164 The OCC regulates oil and gas drilling, public utilities, and telephone companies. Its Public Utility Division oversees electric and gas utilities to ensure reliable service at reasonable rates.164

• Agency: Oklahoma Corporation Commission (OCC)

• URL: https://oklahoma.gov/occ.html 165

Oklahoma's electric service is primarily provided by two major investor-owned utilities. Oklahoma Gas and Electric (OG&E) and Public Service Company of Oklahoma (PSO), a subsidiary of American Electric Power, serve the majority of the state's residents and businesses.1 In addition to these IOUs, Oklahoma has a number of municipal utilities, such as the Stillwater Electric Utility, which is the second-largest municipal utility in the state.168

 

Directory of Electric Companies

 

 

37. Oregon

Regulatory Oversight

 

The Oregon Public Utility Commission (PUC) is a three-member, governor-appointed panel responsible for the rate regulation of Oregon's investor-owned electric, natural gas, and telephone utilities, as well as select water companies.169 The PUC's authority over publicly owned utilities, such as PUDs and cooperatives, is generally limited to safety regulations.170

• Agency: Oregon Public Utility Commission (PUC)

• URL: https://www.oregon.gov/puc 169

Oregon's electric utility market is diverse, featuring three investor-owned utilities and 38 consumer- or publicly-owned utilities.172 The major IOUs are Portland General Electric (PGE), which serves the Portland metropolitan area, and Pacific Power (a division of PacifiCorp), which serves large parts of the state.172 Idaho Power also serves a portion of eastern Oregon.172 The state has a strong public power presence, with numerous Peoples Utility Districts (PUDs) and electric cooperatives serving their local communities.172

 

Directory of Electric Companies

 

 

38. Pennsylvania

Regulatory Oversight

 

The Pennsylvania Public Utility Commission (PUC) is the state agency responsible for balancing the needs of consumers and utilities.174 It ensures safe and reliable utility service at reasonable rates for electric, natural gas, water, and other services. The PUC also educates consumers to help them make informed choices in the state's competitive energy markets.174

• Agency: Pennsylvania Public Utility Commission (PUC)

• URL: http://www.puc.pa.gov/ 174

Pennsylvania has a deregulated electricity market, allowing customers to choose their generation supplier. The delivery of electricity is managed by several large Electric Distribution Companies (EDCs). PECO Energy Company, an Exelon company, is the largest utility in the state, serving the Philadelphia area.176 PPL Electric Utilities serves central and eastern Pennsylvania.176 Duquesne Light Company serves the Pittsburgh area.176 Additionally, several FirstEnergy subsidiaries operate in the state, including Met-Ed, Penelec, Penn Power, and West Penn Power.176

 

Directory of Electric Companies

 

 

39. Rhode Island

Regulatory Oversight

 

The Rhode Island Public Utilities Commission (RIPUC) is a three-person executive board that works with the Division of Public Utilities and Carriers to regulate public utilities.178 The commission is a quasi-judicial tribunal with jurisdiction over rates, tariffs, and the sufficiency of facilities for electric, gas, water, and other services.179 Commissioners are appointed by the governor for six-year terms.178

• Agency: Rhode Island Public Utilities Commission (RIPUC)

• URL: https://ripuc.ri.gov/ 180

Rhode Island's electric market is dominated by a single utility company. Rhode Island Energy (which acquired the electric and gas business from National Grid) is the main electric distribution company, providing service to nearly all customers in the state.181 The state has a deregulated energy market, allowing customers to choose an alternative retail energy supplier, but Rhode Island Energy remains responsible for the delivery of power and serves as the supplier of last resort.181 A few small, independent utilities, such as the Block Island Power Company, also operate in the state.182

 

Directory of Electric Companies

 

 

40. South Carolina

Regulatory Oversight

 

The Public Service Commission of South Carolina (PSC) is a regulatory agency that oversees public utilities, including electric power, telecommunications, natural gas, and water/wastewater services.183 The commission's members are elected by the General Assembly.183

• Agency: Public Service Commission of South Carolina (PSC)

• URL: https://psc.sc.gov/ 184

The regulated electric utility sector in South Carolina is composed of four main investor-owned companies. Dominion Energy South Carolina (formerly SCE&G), Duke Energy Carolinas, and Duke Energy Progress are the largest providers, serving the majority of the state's population.185 Lockhart Power Company is a smaller regulated utility.186 In addition to these IOUs, the state is served by Santee Cooper (the state-owned South Carolina Public Service Authority) and a large network of electric cooperatives, which are not fully regulated by the PSC.185

 

Directory of Electric Companies

 

 

41. South Dakota

Regulatory Oversight

 

The South Dakota Public Utilities Commission (PUC) is an elected, three-member body responsible for regulating the state's investor-owned electric, natural gas, and telephone utilities.187 The PUC also has siting authority for large energy facilities and licenses grain warehouses.188 It plays a more limited regulatory role with respect to cooperative and municipal utilities.188

• Agency: South Dakota Public Utilities Commission (PUC)

• URL: https://puc.sd.gov/ 188

South Dakota's electric service is provided by a combination of large investor-owned utilities and numerous rural cooperatives. The primary IOUs serving the state include Xcel Energy, MidAmerican Energy, Otter Tail Power Company, and Black Hills Energy.159 These companies serve the major population centers, while a network of cooperatives like Sioux Valley Energy and Southeastern Electric Co-op provide power to the state's rural areas.189

 

Directory of Electric Companies

 

 

42. Tennessee

Regulatory Oversight

 

The Tennessee Public Utility Commission (TPUC) is the state governmental body responsible for setting rates and service standards for privately owned telephone, natural gas, electric, and water utilities.191 The agency was formerly known as the Tennessee Regulatory Authority.191

• Agency: Tennessee Public Utility Commission (TPUC)

• URL: https://www.tn.gov/tpuc.html 192

Tennessee's electric utility structure is unique, as it is dominated by local power companies (LPCs) that purchase and distribute wholesale electricity generated by the Tennessee Valley Authority (TVA), a federally owned corporation.193 These LPCs are typically municipal utilities or electric cooperatives. The TPUC's jurisdiction over these entities is limited. The largest distributors in the state include Memphis Light, Gas and Water Division (MLGW), Nashville Electric Service (NES), and the Knoxville Utilities Board (KUB).193

 

Directory of Electric Companies

 

 

43. Texas

Regulatory Oversight

 

The Public Utility Commission of Texas (PUCT) regulates the state's electric, telecommunication, and water and sewer utilities.195 Composed of five commissioners appointed by the governor, the PUCT implements legislation and provides customer assistance in resolving complaints.196 It has oversight of the Electric Reliability Council of Texas (ERCOT), which manages the electric grid for about 90% of the state.195

• Agency: Public Utility Commission of Texas (PUCT)

• URL: https://www.puc.texas.gov/ 196

Texas operates the most prominent deregulated electricity market in the U.S. In this market, customers choose from a variety of Retail Electric Providers (REPs) for their electricity supply. The physical delivery of that power is handled by regulated Transmission and Distribution Utilities (TDUs), also known as utility companies. There are five main TDUs in the state. Oncor Electric Delivery is the largest, serving Dallas-Fort Worth and other parts of North and West Texas.17 CenterPoint Energy serves the Houston metropolitan area.17 AEP Texas operates as two separate entities, AEP Texas Central and AEP Texas North, serving southern and northern territories, respectively.17 Texas-New Mexico Power (TNMP) serves various communities across the state.197

 

Directory of Electric Companies

 

 

44. Utah

Regulatory Oversight

 

The Public Service Commission of Utah (PSC) is a three-member board appointed by the governor with the consent of the state Senate.198 The PSC's goal is to ensure safe, reliable, adequate, and reasonably priced utility service from the state's regulated energy, telecommunications, and water companies. It conducts hearings and investigations to determine just and reasonable rates.198

• Agency: Public Service Commission of Utah (PSC)

• URL: https://psc.utah.gov/ 200

The electric utility market in Utah is dominated by a single, large, rate-regulated public utility. Rocky Mountain Power, a division of PacifiCorp, serves over 800,000 customers and covers approximately three-fourths of the state's geographic area.201 In addition to this major investor-owned utility, electric service is also provided by a number of municipal utilities and electric cooperatives, such as the Utah Associated Municipal Power Systems (UAMPS) and Heber Light & Power.202

 

Directory of Electric Companies

 

 

45. Vermont

Regulatory Oversight

 

The Vermont Public Utility Commission (PUC), formerly known as the Public Service Board, is an independent, three-member, quasi-judicial commission that regulates Vermont's public utilities.203 Commissioners are appointed by the governor and serve staggered six-year terms.203 The PUC supervises the rates, quality of service, and financial management of electric, natural gas, telecommunications, and private water companies.203

• Agency: Vermont Public Utility Commission (PUC)

• URL: https://puc.vermont.gov/ 205

Vermont's electric power needs are served by over twenty utilities, but the market is heavily concentrated.206 Green Mountain Power (GMP) is the state's largest utility by a significant margin, serving about 80% of Vermont's customers after its merger with Central Vermont Public Service.206 A unique feature of Vermont's grid is the Vermont Electric Power Company (VELCO), a transmission-only utility owned collectively by the state's 17 local distribution utilities. VELCO manages the high-voltage transmission system that moves power throughout the state.206

 

Directory of Electric Companies

 

 

46. Virginia

Regulatory Oversight

 

The Virginia State Corporation Commission (SCC) is a regulatory agency with broad authority over utilities, insurance, state-chartered financial institutions, and railroads.208 Created by the Virginia Constitution in 1902, the SCC has three commissioners elected by the General Assembly for six-year terms.209 It is an independent branch of government with administrative, legislative, and judicial powers, and its decisions can only be appealed to the Virginia Supreme Court.209

• Agency: Virginia State Corporation Commission (SCC)

• URL: https://www.scc.virginia.gov/ 209

Virginia's electric service is dominated by two large investor-owned utilities. Dominion Energy Virginia is the primary provider for most of the state.210 Appalachian Power, an American Electric Power company, serves the western part of Virginia.212 In addition, the state is home to a number of large and influential electric cooperatives, such as the Northern Virginia Electric Cooperative (NOVEC), which serves suburban areas outside of Washington, D.C..211

 

Directory of Electric Companies

 

 

47. Washington

Regulatory Oversight

 

The Washington Utilities and Transportation Commission (UTC) is a three-member board appointed by the governor to regulate the rates, services, and practices of the state's privately owned utility and transportation companies.214 This includes electric, telecommunications, natural gas, and water companies. The UTC's mission is to ensure these services are safe, equitable, available, reliable, and fairly priced.214

• Agency: Washington Utilities and Transportation Commission (UTC)

• URL: https://www.utc.wa.gov/ 215

Washington State has a diverse electric utility sector characterized by a strong public power tradition. While there are major investor-owned utilities like Puget Sound Energy (PSE) and Avista Corporation, a significant portion of the state is served by Public Utility Districts (PUDs) and municipal utilities.216 Notable public power entities include Seattle City Light, Tacoma Power, and Snohomish County PUD, which is the state's largest PUD.216 The state's low electricity costs are largely due to its extensive hydroelectric resources.218

 

Directory of Electric Companies

 

 

48. West Virginia

Regulatory Oversight

 

The Public Service Commission of West Virginia (PSC) is the state agency that regulates utilities to ensure that reasonably priced and reliable services are available to all customers.219 The PSC is composed of three commissioners appointed by the governor.220 Its jurisdiction covers electric, gas, water, and other utilities.219

• Agency: Public Service Commission of West Virginia (PSC)

• URL: http://www.psc.state.wv.us/ 219

West Virginia's electric utility market is served by a small number of companies. Appalachian Power, an American Electric Power (AEP) subsidiary, provides service to the southern half of the state.212 Most other areas are served by two subsidiaries of FirstEnergy Corporation: Mon Power and Potomac Edison.212 Wheeling Power, another AEP subsidiary, serves two counties in the Northern Panhandle.221

 

Directory of Electric Companies

 

 

49. Wisconsin

Regulatory Oversight

 

The Public Service Commission of Wisconsin (PSC) is responsible for the regulation of Wisconsin's public utilities, including electric, natural gas, and water services.222 The PSC's role includes processing rate cases, authorizing construction projects, and administering grant programs related to energy and broadband.222

• Agency: Public Service Commission of Wisconsin (PSC)

• URL: https://psc.wi.gov/ 223

Wisconsin's electric grid is served by a mix of investor-owned utilities, municipal utilities, and rural electric cooperatives. The major IOUs include Wisconsin Electric Power Company (operating as We Energies), Wisconsin Public Service Corporation (WPS), Wisconsin Power & Light (a subsidiary of Alliant Energy), Madison Gas & Electric (MGE), and Northern States Power - Wisconsin (a subsidiary of Xcel Energy).225 These companies serve the state's major population centers, while a large network of cooperatives and municipal utilities serve the remaining areas.225

 

Directory of Electric Companies

 

 

50. Wyoming

Regulatory Oversight

 

The Wyoming Public Service Commission (PSC) is a quasi-judicial tribunal that regulates the state's natural gas, electric, telecommunications, water, and pipeline services.227 It consists of three commissioners appointed by the governor and confirmed by the Senate for staggered six-year terms.228 The PSC's primary duty is to ensure that public utilities provide Wyoming customers with safe, adequate, and reliable service at just and reasonable rates.228

• Agency: Wyoming Public Service Commission (PSC)

• URL: https://psc.wyo.gov/ 229

Wyoming's electric service is provided by a combination of investor-owned utilities and a large number of rural electric cooperatives. The primary private utilities serving the state are Rocky Mountain Power (a division of PacifiCorp) and Black Hills Energy.190 The state's vast rural areas are served by an extensive network of cooperatives, including Carbon Power & Light, High West Energy, and Lower Valley Energy.190

 

Directory of Electric Companies

 

 

Conclusion

 

This report provides a comprehensive, state-by-state directory of the primary electric utility providers in the United States, contextualized by an overview of their respective regulatory bodies. The analysis reveals a diverse and complex industry landscape. While some states are dominated by a single, large investor-owned utility operating as a regulated monopoly, others feature a competitive mix of IOUs, publicly-owned municipal systems, and member-owned cooperatives.

Several key themes emerge from this national survey. First is the significant influence of large, multi-state holding companies, whose regional strategies often dictate local utility operations in states like Arkansas and Kentucky. Second is the profound impact of geography and population density, which has led to a hyper-localized, fragmented utility model in Alaska and a strong cooperative presence across the rural West and Midwest. 

Finally, the growing influence of state-level energy policy is fundamentally reshaping markets, most notably in California, where the rise of Community Choice Aggregators has created a new, multi-layered competitive landscape. For any entity seeking to engage with the U.S. electricity sector, a nuanced understanding of these state-specific market structures and regulatory environments is not just beneficial, but essential for success.

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