What Companies are in the Public Utilities Field – Top 15 Companies

The public utilities sector plays a vital role in providing essential services like electricity, gas, water, and telecommunications to communities and businesses. Utility companies serve residential and commercial properties with necessities like natural gas, electricity, water, and sewage. These companies are heavily regulated by public authorities, despite some of them operating for profit.

You can find various companies within the public utilities industry, from large businesses offering multiple services to specialized niche firms focusing on areas like wind energy.

In this article, we will explore notable companies in the public utilities field contributing to the efficient and reliable provision of these crucial services. After understanding employers in this industry, you can better decide which organizations align with your interests and career goals. Let’s delve into the public utilities sector and answer the question: ‘What companies are in the public utilities field?’

What is the Public Utilities Field?

The public utility field refers to the economic sector primarily focusing on providing essential services such as water, sewage, electricity, natural gas, and other vital amenities to properties, including residential homes and commercial buildings. These services are crucial for communities and businesses.

Public utility organizations in this field may also prioritize sustainable practices and renewable energy from sources like wind turbines or solar panels. Adopting environmentally friendly approaches contributes to a more sustainable and eco-conscious society.

This sector employs diverse professionals, including highly specialized engineers, technicians, and quality control specialists. These individuals possess the expertise to operate and maintain the complex infrastructure required for efficient service delivery.

Apart from technical roles, the public utilities field also offers attractive opportunities for sales, customer satisfaction, administration, and finance. Efficient management and a customer-centric approach ensure utility services run smoothly.

Which companies are involved in public utilities?

Public utilities are indispensable companies that supply essential services to the public, including electricity, gas, water, telecommunications, and transportation. These services are vital for the smooth functioning of modern society, and public utilities play a crucial role in ensuring their availability and reliability.

01. NextEra Energy

NextEra Energy, headquartered in Juno Beach, Florida, is the largest electric utility company in the US, serving over 57 million customers in several states. It’s a leading renewable energy company with a robust portfolio of 40 gigawatts of wind and solar power. Publicly traded on NYSE under NEE, the company’s market capitalization exceeded $150 billion as of March 8, 2023. It has consistently been ranked among the most admired companies by Fortune magazine. NextEra Energy offers a promising investment opportunity with its strong financial position, dividend growth history, and position as a clean energy transition leader in response to increasing electricity demand.

02. Southern Company

Southern Company, headquartered in Atlanta, Georgia, is the largest electric utility company in the southeastern United States, serving over 4.5 million customers across several states. This Company has a strong market presence with a diverse electricity production portfolio that includes coal, nuclear, natural gas, and renewables. It has been consistently ranked as one of the most admired companies in the US by Fortune magazine. The company’s focus on renewable energy and solid financial position make it an appealing investment choice. However, potential investors should be aware of industry-related risks, such as regulatory changes and fuel cost fluctuations, which may impact the company’s performance and stock price volatility.

03. American Electric Power (AEP)

American Electric Power (AEP) is a major investor-owned electric utility in the US, serving over five million customers in 11 states. It ranks among the nation’s largest electricity generators, with nearly 38,000 megawatts of capacity. AEP owns the most extensive electricity transmission system in the US, spanning about 39,000 miles. Headquartered in Columbus, Ohio, It has around 16,000 employees and annual revenues of approximately $35 billion. Its stock is traded on NYSE under the AEP ticker, with institutional investors holding majority ownership of 75.23% of outstanding shares.

04. Duke Energy (DUK)

Duke Energy (DUK) is a major electric power holding company in the US, serving millions of customers across various states. It operates in three segments: electric, gas, and commercial renewables. Duke’s electric utilities serve about 7.9 million customers, while its gas utilities cater to around 1.5 million customers. The company is a Fortune 500 entity headquartered in Charlotte, North Carolina, and its stock is traded on the NYSE under “DUK.” Duke Energy offers an attractive investment prospect with a strong presence in the energy sector and a focus on renewables.

05. Dominion Energy

Dominion Energy, headquartered in Richmond, Virginia, is a significant American power and energy company. It serves electricity in parts of Virginia, North Carolina, and South Carolina and provides natural gas to regions in several states. With over 7 million customers, Dominion Energy is one of the largest electric utilities in the US and a significant natural gas producer with 2 trillion cubic feet of proven reserves. Founded in 1983 through mergers, the company has grown via acquisitions, including the notable 2018 acquisition of SCANA Corporation. It is publicly traded on NYSE under the ticker symbol “D.” It aims to deliver clean, reliable, and affordable energy, investing in renewable projects like solar, wind, and hydroelectric power while working to reduce carbon emissions.

06. Entergy Corporation (ETR)

Entergy Corporation (ETR) is an integrated energy company that provides electricity and natural gas to customers in the United States. The company’s regulated utility operations include Arkansas, Louisiana, Mississippi, and Texas electric and gas utilities. Entergy also owns and operates several non-regulated businesses, including a wholesale power generation business and a retail natural gas marketing business. Its stock is currently trading in market. The company has a market capitalization of $13.9 billion and a P/E ratio 14.52. ETR has been on a downward trend recently, but many analysts still consider it a strong-value stock.

07. American Water Works

American Water Works Company is the US’s most significant publicly traded water and wastewater utility company, serving 1,700 communities across 14 states and 18 military installations. Headquartered in Camden, New Jersey, the company employs over 6,400 people and has a market capitalization of over $30 billion. It focuses on water conservation, infrastructure investment, and ensuring clean and safe water supplies. In 2021, its revenue was $3.93 billion, and its largest shareholder is The Vanguard Group, Inc., owning 12% of the company’s shares. With solid financials and effective management, American Water is well-positioned for future growth.

08. Sempra Energy (SRE)

Sempra Energy (SRE) is a prominent energy infrastructure company delivering energy solutions across North America. With operations encompassing natural gas pipelines, electric power generation, and water desalination, Sempra is a leading developer in renewable energy projects. Several factors could potentially drive Sempra’s stock price higher, including the escalating demand for natural gas and electricity in North America, a thriving renewable energy market, and the successful execution of Sempra’s growth projects. Conversely, some factors might lead to a decline in Sempra’s stock price, such as a downturn in natural gas or electricity prices, regulatory challenges, and delays in the execution of Sempra’s growth projects. 

09. Xcel Energy (XEL)

Xcel Energy (XEL) is a regulated U.S. electric utility and natural gas delivery company based in Minneapolis, serving 3.7 million electric and 2.1 million natural gas customers across eight states. It operates in the electric utility, natural gas utility, and other segments, including renewable energy development. XEL is a Fortune 500 company trading on Nasdaq. Committed to clean energy, Xcel aims to be net-zero carbon by 2050.

10. Public Service Group (PEG)

Public Service Enterprise Group (PEG) is a reputable energy holding company headquartered in Newark, New Jersey. It oversees the operations of Public Service Electric and Gas (PSE&G), PSEG Power, and PSEG Long Island, covering electric and gas utilities, renewable energy, and energy services. PEG stands out as a dividend-paying stock, currently offering a dividend yield of 3.5%. With a solid track record of providing reliable energy services and a pioneering role in renewable energy development, PEG presents an attractive investment opportunity for those seeking exposure to the energy sector while enjoying the benefits of dividends.

11. Verizon Communications lnc.

Verizon Communications Inc. is a leading American multinational telecommunications conglomerate offering wireless, wireline, broadband, and video services. Headquartered in NYC, it serves over 120 million wireless customers, 50 million wireline, and 15 million video customers. Verizon also provides IT solutions and conducts research in cutting-edge technologies like 5G and artificial intelligence. With a global presence and a workforce 150,000, Verizon remains committed to growth and exceptional customer service.

12. National Grid

National Grid is a multinational electricity and gas utility company headquartered in London, operating in the United Kingdom, the United States, and Canada. As one of the world’s largest publicly listed utilities, it focuses on transmitting and distributing electricity and gas. In the UK, National Grid is the most extensive electricity transmission and distribution business, ensuring a reliable and efficient electricity supply to customers and communities. It also operates the gas transmission system, transporting gas from the North Sea to homes and businesses. It is a significant natural gas and electricity provider serving New York and Massachusetts customers. 

13. PG&E Corporation:

PG&E Corporation is a leading American utility headquartered in Oakland, California. It serves approximately 16 million people across a vast 70,000-square-mile service area in northern and central California, including the San Francisco Bay Area and the Sierra Nevada foothills. The company provides both natural gas and electricity to its customers. Despite its significant presence in the California energy market, PG&E has faced criticism recently due to its involvement in several devastating wildfires. These incidents led to the company filing for bankruptcy in 2019. However, PG&E emerged from bankruptcy in 2020 with new safety measures, including a $20 billion fund to compensate wildfire victims and a commitment to reducing reliance on natural gas.

14. Exelon Corporation

Exelon Corporation, headquartered in Chicago, Illinois, is the largest electric utility company in the United States, with around 10 million customers in several states, including Delaware, the District of Columbia, Illinois, Maryland, New Jersey, and Pennsylvania. Through its Constellation business unit, Exelon also actively participates in the competitive energy market. The company’s six utilities ensure reliable electricity and natural gas delivery to its extensive customer base via a widespread transmission and distribution lines network. Exelon’s power generation fleet comprises a diverse mix of nuclear, gas, wind, solar, and hydroelectric facilities. Anchored in sustainability and environmental stewardship, Exelon has set ambitious goals for reducing carbon emissions and increasing renewable energy sources utilization.

15. CMS Energy

CMS Energy Corporation (CMS) is a leading energy company headquartered in Jackson, Michigan. It owns Consumers Energy, Michigan’s largest electric and gas utility, and operates independent power generation businesses. Serving over 6.8 million customers, CMS Energy is a significant player in Michigan’s energy market. Committed to sustainability, the company aims for net-zero carbon emissions by 2050 and invests in renewable energy sources. CMS Energy is a Fortune 500 company, ranked 238 on the 2023 list, with a market capitalization of over $20 billion.

Types of Companies in the Public Utilities Field

Public utilities are a crucial sector of the economy, providing essential services to the public. It comprises various industries, including electricity, gas, water, telecommunications, and transportation.

  1. Electric Utilities

These companies generate, transmit, and distribute electricity to consumers. Operating large power plants using sources like coal, natural gas, nuclear, and renewable energy such as solar and wind, they follow strict regulations for environmental standards, cost of services, and customer service. Key players in the United States include Duke Energy, NextEra Energy, and Southern Company.

  1. Gas Utilities

Gas utilities supply natural gas to residential and commercial customers through pipelines. They offer gas for heating and cooking, meter installations, and infrastructure maintenance. National Grid and Southern California Gas Company are notable gas utilities in the US.

  1. Water Utilities

Water utilities ensure clean drinking water delivery and manage wastewater treatment and stormwater systems. They conduct water quality monitoring, treatment, distribution, wastewater collection, and stormwater management. Leading water utilities include the American Water Company and Aqua America.

  1. Telecommunications Providers

Telecom companies offer phone, internet, TV, radio, and other communication services via cable and satellite networks. They provide mobile plans, landline services, internet, digital TV, satellite radio, VoIP, and IPTV. Notable providers include AT&T, Verizon, and CenturyLink.

  1. Transportation Providers

Transportation companies offer bus, rail, air, and ferry services, maintaining the required infrastructure. Public transportation providers are often government-owned; examples in the US are Amtrak, Greyhound, and SEPTA.

The public utility field plays a vital role in ensuring the smooth functioning of our society, supplying energy, communication, and transportation services essential for daily life.

The Importance of Public Utilities Company

Public utilities are crucial in modern society, providing essential services for everyday life. These utilities supply electricity, natural gas, water, and other necessary resources to residential, commercial, and industrial properties. This ensures the smooth operation of various sectors and activities.

  • Essential Services: Electricity, gas, and water are fundamental necessities for households and businesses. Public utilities ensure these services are readily available, allowing people to power their homes, heat and cook with gas, and access clean drinking water.

  • Transition to Green Energy: With the increasing focus on sustainable practices, public utility companies are adapting to the evolving energy landscape. Many are making financial investments in renewable energy sources like wind turbines and solar panels, contributing to a greener and more sustainable future.

  • Job Creation: The top public utility companies in the United States are significant employers, generating thousands of job opportunities across various fields. They contribute significantly to the economy and local communities by providing stable employment and career opportunities.

  • Regulatory Compliance: Public utility companies are subject to strict regulations set by the public authorities. Rules ensure that utilities maintain high safety standards, environmental responsibility, and customer service.

  • Infrastructure Upgrades: Public utilities require regular infrastructure upgrades and asset purchases to meet growing demands and technological advancements. These investments help maintain reliable services and ensure that the utilities can cater to the needs of an ever-changing society.

  • Reliable Power Sources: By investing in public utilities, customers can rely on a steady and dependable supply of electricity, gas, and water. This reliability is crucial for residential customers and businesses, as uninterrupted access to these resources is essential for daily operations.

Public Utilities Company’s commitment to sustainable practices and adherence to stringent regulations ensure safe, reliable, and environmentally responsible access to vital resources.

The Challenges Facing Public Utilities Company

  1. Evolving Consumer Expectations:

Consumers now expect more personalized services, greater transparency, and easier access to information from public utilities. Meeting these expectations requires utilities to invest in customer-centric technologies and communication channels.

  1. Natural Disasters and Climate Change:

Public utilities are susceptible to disruptions caused by natural disasters such as hurricanes, floods, and wildfires. Climate change intensifies these challenges, leading to more frequent and severe weather events, which damage infrastructure and disrupt services.

  1. Workforce Management:

Attracting and retaining skilled talent is challenging for public utilities, especially as the industry faces an aging workforce and increasing demand for specialized skills in emerging technologies and sustainability practices.

  1. Decentralization of Energy Generation:

With the rise of distributed energy resources, such as rooftop solar panels and small-scale wind turbines, public utilities face challenges integrating these decentralized sources into their grids and managing fluctuations in energy supply and demand.

  1. Water Scarcity and Quality:

Water utilities grapple with issues related to water scarcity and ensuring water quality. Managing water resources sustainably and addressing water treatment and distribution challenges become imperative for providing clean drinking water.

  1. Financial Constraints:

Balancing infrastructure investment with affordability utility rates affordable for consumers can be challenging. Public utilities must navigate financial constraints while ensuring their financial viability and ability to meet long-term goals.

  1. Resilience and Disaster Preparedness:

Public utilities must enhance their resilience and disaster preparedness to ensure continuity of services during emergencies and disasters. Developing robust contingency plans and response strategies is crucial in safeguarding public welfare.

Navigating these challenges requires public utilities to adopt innovative strategies, embrace technological advancements, and collaborate with stakeholders to build a sustainable, secure, and efficient utility ecosystem that meets the evolving needs of society.


In conclusion, the public utility field is a vital cornerstone of modern society, providing essential services that enable our daily lives and economic activities. The contributions of companies like American Electric Power, Duke Energy, Southern Company, American Water Works Company, NextEra Energy, and Verizon Communications are instrumental in ensuring the reliable delivery of electricity, gas, water, and telecommunications.

These companies focus on dependable services and prioritize sustainability and innovation. Embracing renewable energy sources and investing in green initiatives, they actively contribute to a greener and more sustainable future. Additionally, their commitment to upgrading and maintaining infrastructure ensures the continued reliability of these essential services.

As society evolves and faces new challenges, public utilities play a crucial role in meeting increasing utility demands while driving advancements in clean energy and infrastructure. Through collaborative efforts, adherence to regulations, and customer-centric approaches, these companies remain at the forefront of delivering essential services that support community growth and development nationwide. With their ongoing dedication and forward-thinking mindset, the public utilities field is poised to address future challenges and contribute to a better and more sustainable world.

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