The solar panel installation industry in Illinois plays a crucial role in promoting renewable energy. This sector features a blend of small to medium-sized companies offering a variety of services including residential and commercial installations, energy storage, and electric vehicle charging solutions. As awareness of climate change and energy sustainability grows, the interest in solar technology continues to rise, supported by government incentives. The industry is evolving with innovations and increased demand for clean energy options, positioning Illinois as a noteworthy player in the national renewable energy strategy.

This list highlights 21 notable solar panel installation companies based in Illinois, ranging in size from small teams of 11 to larger firms with up to 200 employees. Founded from 2006 to 2023, these companies are primarily located in metropolitan areas like Chicago and Rockford, with specializations including residential solar systems and commercial renewable energy solutions. Their varied experiences and tailored services reflect a growing commitment to sustainability across different markets in the state.

Continue reading to discover top solar panel installation companies in Illinois.

Top 21 Solar Panel Installation Companies in Illinois

1. Certasun

• Website: certasun.com
• Ownership type: Private
• Headquarters: Buffalo Grove, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 11-50
• LinkedIn: certasun

Certasun is a private solar energy company based in Buffalo Grove, Illinois, specializing in residential solar installations, EV charger installations, and home battery systems. Founded in 2018, Certasun serves homeowners primarily in the Chicago and Milwaukee areas, aiming to reduce energy costs and promote sustainability. The company prides itself on delivering a high-quality customer experience through in-house services, ensuring that all aspects of the installation process are handled directly by their team. With over 2,000 solar projects completed, Certasun has built a reputation for integrity and professionalism. They also offer additional services such as SunPower repair and heat pump water heater installations, further solidifying their role in the clean energy sector. Certasun's commitment to customer satisfaction is reflected in their impressive online reviews, showcasing their dedication to quality and service.

2. Tron Solar

• Website: tron.solar
• Ownership type: Private
• Headquarters: Vernon Hills, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 51-200
• LinkedIn: tron-solar

Tron Solar, based in Vernon Hills, Illinois, is a private company that specializes in renewable energy solutions, particularly solar energy systems tailored for homes and businesses. Founded in 2018, Tron Solar has quickly positioned itself as a player in the solar installation market. The company offers a range of products, including solar panels, battery storage systems, and electric vehicle chargers, aimed at helping customers reduce energy costs and enhance their energy independence. Tron Solar serves both residential and commercial clients, providing installation and maintenance services that are designed to meet the unique needs of each customer. Their commitment to quality is underscored by their in-house installation approach, which allows them to maintain high standards throughout the installation process. Additionally, Tron Solar provides educational resources to inform customers about solar energy, further establishing their role as a knowledgeable partner in the transition to renewable energy.

3. 93Energy

• Website: 93energy.com
• Ownership type: Private
• Headquarters: Skokie, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 11-50
• LinkedIn: 93energy

93Energy, based in Skokie, Illinois, is a solar energy provider that specializes in solar panel installation, energy storage solutions, and electric vehicle (EV) charger installations. Founded in December 2018, the company serves both residential and commercial customers, aiming to reduce energy costs while promoting sustainability through renewable energy solutions. With a team of professionals, 93Energy conducts thorough assessments of clients' energy needs to design customized solar systems. They also provide guidance on financing options and available incentives, ensuring that customers can maximize their savings. The company has built a solid reputation in the industry, as evidenced by numerous positive customer testimonials highlighting their professionalism and commitment to quality service. 93Energy operates primarily in the Midwest, focusing on Illinois but also extending its services to neighboring states.

4. Verde Solutions

• Website: verdesolutions.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: January 2022
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: verde-solutions-llc

Verde Solutions, founded in 2012 and based in Chicago, Illinois, is an energy consulting firm that specializes in sustainable energy solutions. The company offers a range of services, including solar energy installation, electric vehicle (EV) charging infrastructure, commercial energy storage, combined heat and power (CHP) systems, HVAC solutions, and energy-efficient lighting. Verde Solutions aims to assist businesses and organizations in reducing energy costs while enhancing their sustainability efforts. With a team of experienced engineers and project managers, they provide customized energy solutions tailored to the specific needs of their clients. Their portfolio includes numerous successful projects across various sectors, demonstrating their expertise in solar energy and related technologies. Verde Solutions operates with a focus on customer satisfaction and utilizes advanced modeling and planning tools to ensure project success.

5. Day & Night Solar

• Website: dayandnightsolar.com
• Ownership type: Private
• Headquarters: Collinsville, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: day-night-solar

Day & Night Solar, based in Collinsville, Illinois, is a private solar energy provider that specializes in turn-key solar solutions for businesses and organizations. Since its inception in 2009, the company has focused on delivering comprehensive services that include the design, installation, financing, and maintenance of solar energy systems. With a mission to help clients reduce energy costs and effectively transition to renewable energy sources, Day & Night Solar operates throughout the United States, partnering with local contractors to ensure high-quality solar solutions. Their commitment to integrity and customer satisfaction is reflected in their approach to project management and execution. The company also actively monitors federal, state, and local incentive programs to maximize cost recovery for clients, showcasing their dedication to making solar energy accessible and beneficial for a wide range of customers.

6. TruHome Pros LLC.

• Website: truhome-pros.com
• Ownership type: Private
• Headquarters: Schaumburg, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2020
• Headcount: 11-50
• LinkedIn: truhome-pros

TruHome Pros LLC, based in Schaumburg, Illinois, is a private company specializing in solar panel installation and roofing services. Founded in 2020, the company has quickly positioned itself as a trusted provider in the Midwest, particularly in Illinois, Wisconsin, and Michigan. TruHome Pros focuses on helping homeowners reduce energy costs and enhance property value through quality solar solutions. They offer a range of services, including installation, maintenance, and a unique solar and roofing program that allows customers to address both needs simultaneously. The company prides itself on its customer-centric approach, providing detailed consultations and leveraging tax incentives to make solar energy more accessible. With a team of 11-50 employees, TruHome Pros is dedicated to delivering reliable and efficient solar energy solutions, contributing to the growing trend of sustainable living.

7. Iconic Energy

• Website: iconicnrg.com
• Ownership type: Family Owned
• Headquarters: Rockford, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: iconicnrg

Iconic Energy is a family-owned solar energy company based in Rockford, Illinois, established in 2015. The firm specializes in the installation and maintenance of solar panels for residential, commercial, and agricultural clients. With a mission to provide clean and affordable electricity, Iconic Energy aims to help customers reduce their energy costs and carbon footprint. The company prides itself on its local roots, emphasizing a commitment to the community it serves. Their team is knowledgeable about the latest solar technologies and incentives, ensuring clients receive the best possible service and information. Iconic Energy is also a licensed electrical contractor in Illinois, which underscores their expertise in the field. They offer a range of services, including solar maintenance and repair, as well as the installation of EV charging stations, reflecting their adaptability to evolving energy needs.

8. Ailey Solar Electric, Inc.

• Website: aileysolar.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: ailey-solar-electric-inc-

Ailey Solar Electric, Inc. is a Chicago-based solar installation company that has been active since 2007. The firm specializes in providing renewable energy solutions tailored to residential, commercial, and non-profit sectors. With a team of 15 employees, Ailey Solar emphasizes local knowledge and community commitment, aiming to empower clients to transition to sustainable energy sources. They handle the entire installation process in-house, ensuring quality and customer satisfaction. Ailey Solar also offers various financing options, including loans and Power Purchase Agreements (PPAs), to help clients manage costs effectively. Their dedication to environmental stewardship is reflected in their mission to serve historically marginalized communities, making a significant impact in the areas they operate.

9. Rethink Electric

• Website: rethinkelectric.com
• Ownership type: Private
• Headquarters: Wood Dale, Illinois, United States (USA)
• Employee distribution: United States (USA) 96%, Canada 4%
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: rethink-electric

Rethink Electric is a solar installation and electrical services provider based in Wood Dale, Illinois. Established in 2014, the company specializes in both commercial and residential solar panel installations, catering to homeowners and businesses aiming to reduce energy costs and enhance sustainability through renewable energy solutions. With a workforce of 51-200 employees, Rethink Electric has successfully completed over 1,000 solar projects, showcasing their expertise and commitment to quality. Their team includes NABCEP certified professionals, ensuring high standards in installation and service. In addition to solar installations, Rethink Electric offers a range of electrical services, positioning themselves as a full-service contractor in the energy sector. Their focus on customer satisfaction is reflected in numerous positive testimonials, highlighting their effective communication and project management skills. Rethink Electric operates primarily in the Midwest, with a strong presence in the Chicago area, and is dedicated to promoting cleaner energy solutions.

10. Green Home Makeover

• Website: greenhomemakeover.com
• Ownership type: Private
• Headquarters: Willowbrook, Illinois, United States (USA)
• Founded year: 2021
• Headcount: 11-50
• LinkedIn: green-home-makeover

Green Home Makeover is a private solar energy provider based in Willowbrook, Illinois, established in 2021. The company specializes in solar panel installation and leasing services tailored for homeowners in the region. With a team of 11 to 50 employees, they focus on facilitating the transition to renewable energy, aiming to help clients reduce their utility expenses and enhance their property value through solar solutions. Green Home Makeover offers comprehensive consultations and manages the entire installation process, ensuring a seamless experience for their customers. Their website features informative content that addresses common concerns about solar energy, such as its impact on home value and the financial benefits of solar leasing. This educational approach reflects their commitment to customer engagement and industry involvement, positioning them as a relevant player in the solar installation sector.

11. Windfree Solar

• Website: windfree.us
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: windfree-solar

Windfree Solar, based in Chicago, Illinois, has been a prominent player in the solar energy sector since its inception in 2009. The company specializes in providing renewable energy solutions tailored to the needs of residential, commercial, and municipal clients. With a dedicated team of industry experts, Windfree Solar focuses on delivering high-quality solar installations and energy storage systems. They have successfully completed numerous projects across the Midwest, helping clients reduce energy costs and carbon footprints. Windfree Solar is also recognized as a certified Minority Owned Business and an Equity Eligible Contractor, reflecting their commitment to diversity and community engagement. Their services extend beyond installation, as they also provide ongoing support and maintenance, ensuring that clients maximize the benefits of their solar systems.

12. Continental Energy Solutions

• Website: cesnrg.com
• Ownership type: Family Owned
• Headquarters: Oak Brook, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: cesnrg

Continental Energy Solutions, based in Oak Brook, Illinois, is a family-owned solar energy company that specializes in commercial solar panel installations and battery storage solutions. Since its inception in 2009, the company has focused on helping businesses and organizations reduce energy costs and carbon footprints through customized renewable energy systems. Their offerings include roof mount and ground mount solar installations, community solar projects, and microgrids, along with energy management services. With a dedicated team of engineers, project managers, and field supervisors, Continental Energy Solutions has successfully completed over 90 solar PV projects and installed more than 350 electric vehicle chargers. The company is committed to maximizing energy savings for its clients while promoting a cleaner environment. Their involvement in the Illinois Solar Energy Association and their advocacy for solar incentives further solidify their position in the renewable energy sector.

13. Carbon Solutions Group

• Website: carbonsolutionsgroup.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: carbon-solutions-group

Carbon Solutions Group, founded in 2006 and based in Chicago, Illinois, is a private company specializing in renewable energy solutions. The firm operates primarily in the solar energy sector, providing services that include solar aggregation and SREC management. They have partnered with over 250 solar installers, facilitating the monetization of solar renewable energy certificates for more than 20,000 customers across 20 states. In addition to solar, Carbon Solutions Group also offers electric vehicle charging infrastructure and environmental consulting services, helping clients achieve sustainability goals. Their expertise extends to managing emissions and providing advisory services related to decarbonization and ESG compliance. The company has built a reputation for navigating the complexities of renewable energy markets, making it a significant player in the renewable energy space.

14. Porter Electric LLC

• Website: porter-electric.com
• Ownership type: Private
• Headquarters: Pekin, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2016
• Headcount: 11-50
• LinkedIn: porter-electric-llc

Porter Electric LLC, based in Pekin, Illinois, is a private electrical contractor that has been operational since 2016. The company specializes in a range of electrical services, including residential, commercial, and industrial work, with a notable emphasis on solar panel installations. With a team of skilled electricians boasting over 50 years of combined experience, Porter Electric is dedicated to providing high-quality craftsmanship and customer service. They serve a wide area in Central Illinois, including cities like Peoria and Springfield. The company is licensed, bonded, and insured, ensuring compliance with industry standards. Their solar division is particularly noteworthy, as they offer comprehensive solar installation services, utilizing advanced technologies such as drone inspections and 3-D modeling to tailor solutions to client needs. Porter Electric is also well-versed in navigating incentive programs, helping clients maximize their investment in solar energy.

15. Tick Tock Energy, Inc.

• Website: ticktockenergy.com
• Ownership type: Private
• Headquarters: Effingham, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: ticktockenergy

Tick Tock Energy, Inc., based in Effingham, Illinois, specializes in renewable energy solutions with a strong emphasis on solar energy and energy efficiency services. Since its inception in 2006, the company has served both residential and commercial customers, providing a variety of products and services. These include roof-mounted and ground-mounted solar panels, off-grid solar systems, and energy management solutions. Tick Tock Energy also offers LED lighting options and power management services, aiming to help clients reduce their energy costs and enhance sustainability. Their participation in community solar initiatives and their status as a Pearl-certified contractor further highlight their commitment to quality and innovation in the renewable energy sector. The company has not reported any funding, indicating a self-sustaining business model focused on growth through service excellence and customer referrals.

16. United American Marketing

• Website: uampower.com
• Ownership type: Private
• Headquarters: Oak Brook, Illinois, United States (USA)
• Founded year: 2013
• Headcount: 51-200
• LinkedIn: unitedamericanmarketing

United American Marketing, operating under the brand UAM Power, is an energy solutions provider based in Oak Brook, Illinois. Founded in 2013, the company specializes in renewable energy and energy efficiency services. UAM Power offers a comprehensive suite of products, including solar panel installations, energy storage solutions, and energy supply services tailored for residential customers, businesses, municipalities, and non-profits. Their Unity Solar Group division is specifically dedicated to the development and installation of solar energy systems. UAM Power has expanded its operations across several states and has established partnerships with notable organizations to enhance its service capabilities. The company is committed to helping clients reduce energy costs and transition to sustainable energy practices, reflecting a strong alignment with current trends in the energy sector.

17. Phoenix Exteriors

• Website: phoenixexteriors.com
• Ownership type: Private
• Headquarters: Schaumburg, Illinois, United States (USA)
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: phoenix-exteriors

Phoenix Exteriors, founded in 2007 and based in Schaumburg, Illinois, operates as a private company with a workforce of approximately 41 employees. The firm provides a range of services, including residential and commercial roofing, storm damage repairs, and solar panel installations. Their focus on sustainability is evident in their mission to enhance property value and energy efficiency for both homeowners and businesses. The company also offers Tesla solar roofs and battery solutions, showcasing their commitment to innovative solar technology. With a strong emphasis on customer service and a portfolio that highlights their expertise in both roofing and solar energy, Phoenix Exteriors positions itself as a reliable option for clients seeking to improve their energy efficiency and environmental footprint.

18. Oberlander Electric Co

• Website: oberlanderelectric.com
• Ownership type: Private
• Headquarters: Mapleton, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1940
• Headcount: 51-200
• LinkedIn: oberlander-electric-co

Oberlander Electric Co, based in Mapleton, Illinois, has been a prominent electrical contractor since its inception in 1940. With a workforce of approximately 70 employees, the company provides a wide array of electrical services, including residential, commercial, and industrial installations. Notably, they have integrated solar power solutions into their service offerings, catering to the growing demand for renewable energy. Oberlander Electric has built a reputation for reliability and expertise, serving homeowners, businesses, and organizations across Central Illinois. Their commitment to continuous improvement and employee education ensures they remain competitive in the evolving electrical and solar markets. The company has not reported any funding, indicating a self-sustained growth model over its decades of operation.

19. Green Light National

• Website: greenlightnational.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 83%, India 17%
• Founded year: 2011
• Headcount: 11-50
• LinkedIn: green-light-national

Green Light National, founded in 2011 and based in Chicago, Illinois, is a private energy services company that specializes in solar panel installations, LED lighting, and electric vehicle charging solutions. With a workforce of 11 to 50 employees, the company has carved out a niche in enhancing energy efficiency for commercial and industrial clients. Their services extend beyond mere installation; they conduct comprehensive energy audits to identify opportunities for cost savings and sustainability improvements. Green Light National has successfully completed projects across the United States, Canada, and Mexico, showcasing their operational reach. They are also recognized as a Service Disabled Veteran Owned Small Business (SDVOSB), which may appeal to clients seeking to support veteran-owned enterprises. Their case studies highlight significant projects, such as their work with Nestlé Waters, where they achieved substantial energy savings and contributed to corporate sustainability goals. This involvement underscores their commitment to advancing solar energy solutions in the commercial sector.

20. LG Solar USA

• Website: lgsolarusa.com
• Ownership type: Private
• Headquarters: Lincolnshire, Illinois, United States (USA)
• Employee distribution: United States (USA) 54%, India 18%, South Korea 9%, Other 19%
• Founded year: 1958
• Headcount: 10001+
• LinkedIn: lg-solar-usa

LG Solar USA, based in Lincolnshire, Illinois, is a private company that specializes in solar energy solutions. Founded in 1958, the company has established itself as a key player in the solar industry, offering a range of products including solar panels, inverters, and various solar energy applications. LG Solar USA serves a broad clientele, including residential homeowners, commercial businesses, and industrial clients, helping them transition to renewable energy sources. Their focus on reducing energy costs and environmental impact is evident in their product offerings, which are designed to maximize energy efficiency and sustainability. The company employs a significant workforce, with a notable presence in the United States and other countries, reflecting its global reach and commitment to advancing solar technology.

21. Hecate Energy LLC

• Website: hecateenergy.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $550.0M, January 2023
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: hecate-energy-llc

Hecate Energy LLC, based in Chicago, Illinois, is a renewable energy developer that specializes in solar and wind energy projects, along with energy storage solutions. Founded in 2012, the company has built a reputation for collaborating with municipal utilities, investor-owned utilities, and educational institutions to create tailored energy solutions that enhance reliability and sustainability. Hecate Energy has a robust project pipeline, with over 35 gigawatts of renewable energy projects in various stages of development across the United States. Their recent funding of $550 million in early 2023 supports their ambitious plans to monetize approximately 5 gigawatts of renewable energy annually. Hecate Energy's commitment to community partnerships and innovative project execution has made them a notable entity in the renewable energy sector.

Solar Panel Installation Insights: Key Companies in Illinois

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