The electric power industry in Illinois is characterized by diverse companies offering innovative and cutting-edge services. These businesses range from sustainable energy providers such as Exelon to utility solution providers like G&W Electric. Their services span the gamut from electricity generation, distribution and transmission, to power grid automation, switchgear services, and much more. The industry, driven by the urgency of energy sustainability and reliability, is rapidly evolving and these companies are at the forefront - adapting the latest technology, finding innovative solutions, and contributing to a green and sustainable future.


Top 24 electric power companies in Illinois

1. Exelon

Exelon Corporation is a company that operates in the energy sector. They offer various services such as electricity generation and distribution. With a strong focus on innovation and sustainability, Exelon strives to provide reliable and affordable energy solutions to their customers.


2. G&W Electric Co.

  • Website: gwelectric.com
  • Headquarters: Bolingbrook, Illinois, United States
  • Founded: 1905
  • Headcount: 501-1000
  • LinkedIn

G&W Electric is a company that provides utility solutions and software for distribution and transmission of electricity. They offer products such as distribution reclosers, overhead switches, cable accessories, and high accuracy sensors. Their services include power grid automation and switchgear services. The company caters to the commercial and industrial sectors and offers flexible solutions for various applications. They prioritize customer experience and have a culture of innovation. Their website also highlights career opportunities and internships.


3. Prairie State Generating Company

Prairie State Energy Campus is an advanced energy facility that utilizes cutting-edge technology to produce clean, reliable, and affordable electricity for its member communities. As a non-profit organization owned by municipal utilities and electric cooperatives, their mission is to create a sustainable and secure energy future for millions of families. They are committed to environmental initiatives and employ modern emissions control technology to ensure cleaner coal production.


4. Endurant Energy

  • Website: endurant.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2005
  • Headcount: 11-50
  • LinkedIn

Endurant is a market-leading distributed energy solutions provider, owner, and operator. With extensive expertise in all of the technologies they build, including Combined Heat and Power, Energy Foundations, Energy Storage, Fuel Cell, Geothermal, Microgrid, and Solar, Endurant offers reliable, resilient, clean, and cost-effective energy infrastructure solutions.


5. Sargent & Lundy

Sargent & Lundy is a global leader in power and energy with expertise in grid modernization, renewable energy, energy storage, nuclear power, and fossil fuels. They offer comprehensive project services, including consulting, design, and implementation, as well as construction management, commissioning, and operations/maintenance.


6. LaMarche Mfg. Co.

LaMarche is a company that specializes in manufacturing various products. They offer a wide range of high-quality goods for different industries, including electrical power systems, utility metering, renewable energy, and industrial automation. LaMarche is known for its reliable and innovative solutions.


7. S &a; C Electric Canada

  • Website: scelectric.ca
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1911
  • Headcount: 1001-5000
  • LinkedIn

S&C Electric Company is a provider of electrical equipment and services, including custom metal-enclosed switchgear, communication and control units, fault interrupters, and automation products.


8. MT. Carmel Public Utility CO.

  • Website: mtcpu.com
  • Headquarters: Mt. Carmel, Illinois, United States
  • Headcount: 51-200
  • LinkedIn

Mt. Carmel Public Utility Co. (MCPU) is a utility company that provides safe and reliable delivery of electricity and natural gas.


9. Southern Illinois Power Cooperative

  • Website: sipower.org
  • Headquarters: Marion, Illinois, United States
  • Founded: 1948
  • Headcount: 51-200
  • LinkedIn

Southern Illinois Power Cooperative (SIPC) is a generation and transmission cooperative serving seven distribution cooperatives and one municipal in Illinois.


10. Menard Electric Cooperative

  • Website: menard.com
  • Headquarters: Petersburg, Illinois, United States
  • Founded: 1936
  • Headcount: 11-50
  • LinkedIn

Menard Electric Cooperative is a provider of electricity and energy management services. They offer a range of services including power outage reporting, bill payment, and paperless billing. They also provide incentives for distributed generation and net metering. The company serves customers in the Petersburg, IL area.


11. Tick Tock Energy, Inc.

Tick Tock Energy helps individuals and businesses take control of their energy. They reduce utility costs through energy-efficiency, produce energy with solar and wind power, and manage energy to lower consumption and costs.


12. Upper Cumberland Electric Membership Corporation

  • Website: ucemc.com
  • Headquarters: Carthage, Illinois, United States
  • Founded: 1938
  • Headcount: 51-200
  • LinkedIn

Upper Cumberland Electric Membership Corporation (UCEMC) is an electricity provider that operates its programs and services without discrimination based on race, color, or national origin. UCEMC offers electricity to residential and non-residential customers.


13. MJM Electric COOP

  • Website: mjmec.coop
  • Headquarters: Carlinville, Illinois, United States
  • Founded: 1939
  • Headcount: 11-50
  • LinkedIn

MJM Electric Cooperative is a non-profit organization based in Carlinville, IL that provides reliable and low-cost electricity to more than 9,500 accounts in Macoupin, Jersey, Montgomery, Bond, Fayette, Greene, and Madison counties.


14. Tri County Electric Coop

Tri-County Electric Cooperative, Inc is an association of people united by a common interest to maintain and improve the quality of life in their homes, farms, and businesses.


15. MC Squared Energy Services, LLC

MC Squared Energy Services provides an easy and simple process to support renewable energy resources and reduce carbon emissions through the mc² EcoGreen Power Program.


16. Energativ

Energativ helps businesses identify sustainability goals and develop a strategic approach to achieve them with services like solar solutions, HVAC solutions, cogeneration solutions, refrigeration, and building envelope assessments.


17. Solar Power Midwest

Solar Power Midwest is a solar panel installation company that provides easy financing services for cheaper and renewable energy options. They offer complete installation and maintenance of solar panel systems to promote the use of renewable energy, especially solar energy.


18. Energy Mark, Inc

Energy Mark provides the unique technical knowledge needed to deliver energy reliably in a market. Energy Mark has developed mathematical descriptions for the measurement and analysis of energy services and the creation of contractual agreements supported by effective measurement methods. These descriptions give market participants the ability to predict and control services and their associated costs, and to implement effective measurement and settlement systems. With its knowledge of the industry, Energy Mark guides efficient and cost-effective implementation of contractual agreements and supporting systems, enabling clients to lead the emerging markets. Responsibilities for Vertically Integrated Utilities (VIU) are well defined: the generators supply the energy, System Operations coordinates delivery, and loads consume the singular service. System Operations has the responsibility for making the decisions, coordinating the actions of all participants, and insuring efficient system operation. As the VIUs separate into independent business units, different organizations will supply the services in the energy marketplace requiring dis-aggregation of system operation responsibilities. However, the need remains for some centralized coordination, schedule matching, system control and real-time dispatch. The only way to insure the availability of the correct services is to have well-defined contractual responsibilities assigned for each service and modern tools to coordinate the complexities involved with delivery. The essential services that support system reliability have many names. FERC calls them Ancillary Services. NERC calls them Interconnected Operations Services. Energy Marksimply calls them ""Reliability Services"". Energy Mark's definitions and measurement techniques for these Reliability Services describe services sold to customers in terms that are consistent with related services purchased from suppliers. Energy Mark facilitates the contractual relationships between the Transmission Operator and the ...


19. Poltech Electric INC.

Poltech electric is an electrical contractor serving commercial, residential and solar electric systems for your home and business.


20. Midwest Energy

Midwest Energy's mission is to be a leading provider of energy supply and management services that contribute to the profitability and sustainability of its clients, the well-being of its employees, and the prosperity of its shareholders. We will accomplish this by forging long-term partnerships with our clients, offering the best, most competitive products in the market, providing high quality and prompt customer service, and employing highly experienced, knowledgeable and driven individuals. Our 95% customer retention rate shows our commitment to excellence and superior service levels. Contact Us today to learn how Midwest Energy can help your business reduce energy supply costs.


21. Alpha Controls & Services

  • Website: alphaacs.com
  • Headquarters: Rockford, Illinois, United States
  • Founded: 2003
  • Headcount: 51-200
  • LinkedIn

Alpha Controls & Services is a company that specializes in providing solutions for efficient and secure building operations. They offer a range of services including facility oversight, comfort solutions, efficiency solutions, and security solutions. With expertise in building automation, power monitoring, and building analytics, they ensure that facilities run smoothly and employees are comfortable and safe.


22. Energy Resource Americas

  • Website: enram.com
  • Headquarters: Naperville, Illinois, United States
  • Headcount: 1-10

Energy Resource Americas, or ENRAM, is a leader in developing energy management solutions for clients buying, producing, or selling energy and related products and services. Clients include large and small companies, suppliers and distributors, as well as consumers of energy related products/services in transportation, manufacturing, government, education, and other institutions. ENRAM is also an investor and deal broker for other investors in the aforementioned areas.


23. Brady District Energy

Brady District Energy specializes in optimization of the design and the business planning that enables energy and utility services to be provided in Asian and Middle Eastern countries. Large scale district cooling facilities that have been optimized for thermal storage reduce the need for reliable source energy generation capacity by at least 30% compared against all-electric chiller designs. The extra construction cost required to incorporate the storage into the district cooling facility saves 4 to 5 times as much construction cost as a Gas Combustion Turbine generating station and 14 to 16 times as much construction cost at a Solar Photovoltaic generating station. Significant savings in land required for the generating capacity is not included in the cost savings. In order to help you more quickly, please fill out the quick form and submit or call +1-630-279-9424. A representative of the firm will call you.


24. Weldy Lamont Group, Inc.

Weldy Lamont Group is a manufacturers' representative firm that represents companies in various markets and regions. They specialize in selling electrical power products and services, particularly those that require engineering expertise. Their focus is on consulting engineers, industrial, hospitals, data centers, and utility customers.


Want to find more electric power companies?


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