Energy storage companies in Illinois are at the forefront of a changing energy landscape, focusing on enhancing grid reliability and integrating renewable resources. The industry comprises a mix of developers, technology innovators, and consultants, specializing in advanced battery systems, energy efficiency, and sustainable solutions. With a commitment to carbon-neutrality, these companies are addressing energy storage challenges, including intermittency from solar and wind power. Noteworthy trends include increasing investments in scalable energy systems and collaborations leading to enhanced performance. As demand for sustainable energy rises, the growth trajectory of these companies reflects their pivotal role in shaping cleaner energy futures.

This list highlights a range of 24 energy storage companies headquartered in Illinois, predominantly in Chicago. The firms vary in size from small startups to established entities, having been founded between 2003 and 2022. Specializations among these companies include battery technology, renewable energy development, and energy consulting services, indicating a concentrated effort to promote sustainability. Noteworthy firms like GlidePath Power Solutions, Hecate Energy, and NanoGraf demonstrate the strong innovation spirit and industry know-how that Illinois brings to the energy storage market.

Read on to explore the top energy storage companies in Illinois.

Top 24 Energy Storage Companies in Illinois

1. GlidePath Power Solutions

• Website: glidepath.net
• Ownership type: Venture Capital
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Seed, February 2014
• Founded year: 2013
• Headcount: 11-50
• LinkedIn: glidepathpower

GlidePath Power Solutions, based in Chicago, Illinois, is an energy storage company that specializes in advanced energy systems and battery storage solutions. Founded in 2013, the company has built a robust portfolio of operating and developing renewable energy projects. GlidePath focuses on enhancing grid reliability and managing energy demands, providing essential services to utility companies and energy grid operators. They have developed notable projects such as the Byrd Ranch Storage facility in Texas and several pioneering battery storage projects in Illinois. GlidePath's expertise spans various aspects of energy storage, including project development, construction, and operations. Their commitment to accelerating the transition to a carbon-free electric grid is evident in their ongoing projects and strategic initiatives.

2. 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 focuses on solar and wind energy projects alongside 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 promote sustainability and reliability. Hecate Energy operates across various locations in the United States, managing a significant pipeline of projects that includes over 35 gigawatts of renewable energy capacity. Their recent projects include a notable 1,200-megawatt hour energy storage facility aimed at optimizing California's electricity grid. In January 2023, Hecate secured a $550 million credit facility to further advance its renewable energy initiatives, underscoring its commitment to expanding its impact in the energy sector.

3. NanoGraf Corporation

• Website: nanograf.com
• Ownership type: Venture Capital
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $60.0M, September 2024
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: sinode-llc

NanoGraf Corporation, founded in 2012 and based in Chicago, Illinois, specializes in battery technology with a focus on advanced silicon anode materials for lithium-ion batteries. The company aims to improve the performance and longevity of batteries, particularly for electric vehicles and military applications. NanoGraf's innovative approach has led to the development of high-energy-density silicon-based anodes, which promise to replace traditional graphitic anodes. Their technology has been recognized for its potential to increase electric vehicle range by up to 20% and extend battery life significantly. Recently, NanoGraf secured $60 million in federal funding to establish one of the largest silicon anode battery material factories in Flint, Michigan, highlighting their active role in the energy storage industry and commitment to enhancing domestic battery production.

4. Hecate Grid

• Website: hecategrid.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $125.0M, June 2024
• Founded year: 2018
• Headcount: 11-50
• LinkedIn: hecate-grid

Hecate Grid, based in Chicago, Illinois, is an energy storage company that specializes in the development, ownership, and operation of battery energy storage systems. Established in 2018, the company aims to enhance grid reliability and support the integration of renewable energy sources. Hecate Grid serves a range of clients, including electric cooperatives and municipal utilities, providing customized energy storage solutions that improve energy efficiency and reduce costs. The company has successfully permitted and constructed several energy storage projects and boasts a project pipeline exceeding 6 GW of capacity at various stages of development. In June 2024, Hecate Grid secured $125 million in funding, underscoring its growth potential and the confidence investors have in its business model. Hecate Grid's mission is to deploy energy storage projects that contribute to a more resilient and sustainable energy future.

5. 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, HVAC systems, and commercial energy storage. Verde Solutions aims to assist businesses and organizations in reducing energy costs while enhancing their sustainability efforts. Their expertise extends to consulting, engineering, and project management, ensuring that clients receive customized solutions tailored to their specific needs. Notably, Verde Solutions has a strong focus on integrating commercial battery storage with solar systems, which allows clients to manage energy costs effectively and improve reliability. With a team of experienced professionals, Verde Solutions has successfully completed numerous projects across various sectors, demonstrating their commitment to advancing sustainable energy practices.

6. ENGIE Distributed Renewables

• Website: engiedistributedrenewables.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: engie-distributed-renewables

ENGIE Distributed Renewables, part of ENGIE North America, is an energy solutions provider based in Chicago, Illinois. Founded in 2008, the company specializes in renewable energy and energy efficiency, offering services in solar, wind, and energy storage. ENGIE aims to assist public institutions and commercial businesses in their transition to sustainable energy solutions while achieving cost savings and environmental goals. With a notable presence in the energy storage market, ENGIE has installed over 1.8 GW of Battery Energy Storage Systems across the United States. This capacity reflects their commitment to addressing the challenges of energy intermittency and enhancing grid reliability. ENGIE's approach combines advanced technology with a focus on customer collaboration, ensuring that their projects not only meet energy needs but also contribute to broader sustainability objectives.

7. Volta Energy Technologies

• Website: volta.vc
• Ownership type: Private
• Headquarters: Warrenville, Illinois, United States (USA)
• Employee distribution: United States (USA) 69%, United Kingdom (UK) 31%
• Latest funding: November 2022
• Founded year: 2017
• Headcount: 11-50
• LinkedIn: volta-energy-technologies

Volta Energy Technologies, founded in 2017 and based in Warrenville, Illinois, is a private venture capital firm focused on energy technology, particularly in battery and energy storage solutions. The firm plays a crucial role in connecting innovative entrepreneurs with strategic corporate investors, facilitating investments that enhance the adoption of renewable energy and electric vehicles. Volta's expertise in research and development supports its mission to validate and commercialize cutting-edge energy storage technologies. They have successfully closed a venture fund with over $200 million, aimed at investing in battery and energy storage technologies, including hardware and software solutions. Their portfolio includes notable investments in companies like Solid Power, which specializes in all solid-state batteries, and Smart Wires, which optimizes the integration of renewable power on the grid. Volta collaborates with leading research institutions, including Argonne National Laboratory, to validate and develop promising technologies in the energy storage sector.

8. IHI Terrasun Solutions

• Website: ihiterrasun.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 94%, India 3%, Qatar 3%
• Founded year: 2014
• Headcount: 51-200
• LinkedIn: ihiterrasun

IHI Terrasun Solutions, founded in 2014 and based in Chicago, Illinois, is a private energy solutions provider that specializes in energy storage integration and software development. The company offers a comprehensive suite of lifecycle services tailored for solar and energy storage developers. Their expertise lies in optimizing project investments and ensuring seamless integration into the electric grid. IHI Terrasun provides 24/7 monitoring, maintenance, and engineering support, which are essential for the long-term success of energy storage projects. They have developed proprietary software that enhances the efficiency of battery and inverter systems, showcasing their commitment to innovation. With a team of experts dedicated to advancing energy storage solutions, IHI Terrasun is positioned to play a significant role in the ongoing transition to sustainable energy.

9. Endurant Energy

• Website: endurant.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 95%, Canada 5%
• Latest funding: May 2021
• Founded year: 2005
• Headcount: 11-50
• LinkedIn: gi-energy-us

Endurant Energy, based in Chicago, Illinois, is an energy solutions provider that focuses on distributed energy resource systems. Founded in 2005, the company has carved out a niche in the energy sector by offering a range of services including Energy-as-a-Service, Engineering, Procurement, and Construction, as well as Operations and Maintenance. Endurant is backed by LS Power, a significant player in the power and energy infrastructure space, which enhances its operational capabilities. The company is actively involved in various technologies, including energy storage, microgrids, and renewable energy sources like solar and geothermal. Notably, Endurant has executed projects that integrate energy storage solutions, such as the deployment of lithium-ion systems for Con Edison, showcasing their commitment to advancing sustainable energy practices.

10. Firefly Energy

• Website: fireflyenergy.com
• Ownership type: Corporate
• Headquarters: Peoria, Illinois, United States (USA)
• Employee distribution: India 50%, United States (USA) 50%
• Latest funding: October 2010
• Founded year: 2003
• Headcount: 1-10
• LinkedIn: firefly-energy

Firefly Energy, based in Peoria, Illinois, is a battery manufacturer that specializes in advanced battery technology utilizing Microcell Carbon Foam. Founded in 2003, the company emerged from the R&D laboratories of Caterpillar, Inc., acquiring the technology and patents when Caterpillar divested its non-core businesses in 2010. Firefly Energy focuses on providing innovative battery solutions for various applications, including energy storage, transportation, and renewable energy systems. Their products, such as the OASIS MCF Heavy Duty and OASIS MCF G31 batteries, are designed to deliver high performance, extended life, and efficiency. The company operates a manufacturing facility and has a significant presence in India, where it has established a large-scale production operation. Firefly Energy has received recognition for its technology, winning several awards for innovation and entrepreneurial achievement.

11. 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, founded in 2018 and based in Vernon Hills, Illinois, is a private company dedicated to providing renewable energy solutions. The firm specializes in solar energy systems tailored for both residential and commercial clients. Their product lineup includes solar panels, battery storage systems, and electric vehicle (EV) chargers, all aimed at helping customers reduce energy costs and achieve greater energy independence. Tron Solar prides itself on its in-house operations, ensuring high-quality installation and maintenance of solar energy systems. They are certified installers for notable battery solutions from Enphase, Tesla, and SolarEdge, which underscores their capability in the energy storage domain. The company has completed numerous projects across the Midwest, contributing to the growing adoption of solar energy and storage solutions in the region.

12. ELM Companies

• Website: elmllc.com
• Ownership type: Corporate
• Headquarters: Peoria, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: April 2020
• Founded year: 1998
• Headcount: 501-1000
• LinkedIn: elmcompanies

ELM Companies, founded in 1998 and based in Peoria, Illinois, is a corporate entity specializing in utility management and energy solutions. The company operates through several divisions, including ELM Utility Services, ELM MicroGrid, ELM Solar, and ELM LaunchPoint. ELM MicroGrid focuses on battery energy storage systems, providing solutions that enhance energy reliability and efficiency for utility companies, businesses, and municipalities. Their services include utility locating, energy storage, and solar energy technologies, aimed at improving energy efficiency and infrastructure performance. ELM has established a national presence, serving a wide range of clients and emphasizing innovative technology to streamline utility management. With a workforce of around 199 employees, ELM Companies is actively engaged in enhancing energy solutions across various sectors.

13. Cultivate Power

• Website: cultivate-power.com
• Ownership type: Venture Capital
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Series A, $10.0M, October 2023
• Founded year: 2022
• Headcount: 11-50
• LinkedIn: cultivate-power

Cultivate Power, founded in 2022 and based in Chicago, Illinois, is a renewable energy developer specializing in solar and storage projects. The company works closely with local communities and landowners to develop community-integrated solar farms that provide clean energy while also delivering economic benefits. Cultivate Power's approach emphasizes collaboration and customization, ensuring that each project meets the unique needs of the community it serves. Their initiatives extend beyond energy generation; they also include scholarship and workforce development programs aimed at enhancing local economies. Recently, Cultivate Power secured a $10 million Series A funding round, which will be used to expand their solar and storage project development and strengthen local partnerships. This funding reflects their commitment to addressing climate challenges while empowering communities through sustainable energy solutions.

14. Nova Clean Energy

• Website: novacleanenergyllc.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2022
• Headcount: 11-50
• LinkedIn: nova-clean-energy

Nova Clean Energy, founded in 2022 and based in Chicago, Illinois, is a private renewable energy developer. The company specializes in the development and construction of large-scale wind, solar, and energy storage projects across the United States. As the U.S. development platform of Bluestar Energy Capital, Nova Clean Energy aims to contribute significantly to the clean energy transition by 2030. Their project pipeline includes a focus on battery energy storage systems, which are crucial for maintaining grid reliability and accommodating the variable outputs of renewable energy sources. With a team of experienced professionals, Nova Clean Energy is committed to community engagement and sustainable energy solutions, serving utility companies and other stakeholders. The company has quickly established itself in the industry, with a project pipeline exceeding 5 GW across multiple states and power markets.

15. 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 focuses on renewable energy and energy efficiency services. UAM Power offers a variety of products, including solar installations and energy storage solutions, catering to residential customers, businesses, municipalities, and non-profits. Their mission is to democratize renewable energy, making it accessible and affordable for all. UAM Power has established a presence across the United States and has formed partnerships with various organizations to enhance their service offerings. They have been recognized for their rapid growth and commitment to sustainability, having been ranked on the INC.5000 list. Their energy storage solutions are designed to optimize energy use, manage demand, and provide backup power, showcasing their active role in the energy storage industry.

16. CDP Energy

• Website: cdpenergy.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: Mexico 44%, United States (USA) 32%, Nicaragua 12%, Other 12%
• Founded year: 2000
• Headcount: 51-200
• LinkedIn: chicago-digital-power

CDP Energy, founded in 2000 and headquartered in Chicago, Illinois, is a private company that specializes in energy solutions, particularly in electrical protection equipment and renewable energy systems. The company serves a wide range of customers, from individual consumers to large enterprises, by offering innovative products and engineering services aimed at enhancing operational reliability and efficiency. CDP Energy has a significant focus on energy storage, providing various battery solutions and energy storage systems designed to meet the needs of businesses facing challenges with outdated power grids. Their commitment to research and development is evident in their continuous efforts to improve product offerings and adapt to the evolving energy landscape. With a workforce distributed across several countries, including Mexico and the United States, CDP Energy maintains a global presence and operates multiple manufacturing plants. Their mission emphasizes the transition from fossil fuels to renewable energy, showcasing their dedication to sustainable practices in the energy sector.

17. 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, founded in 2018 and based in Skokie, Illinois, is a private company that specializes in solar energy solutions. With a team of 19 employees, they focus on solar panel installation, energy storage solutions, and electric vehicle (EV) charger installations. The company serves both residential and commercial customers, aiming to reduce energy costs and promote sustainability through renewable energy. 93Energy is particularly noted for its energy storage offerings, utilizing Enphase energy storage systems to ensure customers have reliable power, especially during outages. They also provide financing options and guidance on available incentives to help clients maximize their investment in solar technology. Their mission is to empower customers to take control of their energy needs while contributing to a greener future.

18. 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 company founded in 2009. The firm specializes in solar energy solutions, particularly commercial solar panel installations and battery storage systems. They cater to businesses and organizations across Illinois, aiming to reduce energy costs and carbon footprints through customized renewable energy systems. Their offerings include roof-mounted and ground-mounted solar installations, microgrids, and energy management services. With a dedicated team of engineers and project managers, Continental Energy Solutions has successfully completed over 90 solar PV projects and several solar-plus-battery storage solutions. They also provide operations and maintenance services to ensure the longevity and efficiency of their installations. The company actively engages in promoting solar energy incentives available in Illinois, further supporting their clients in maximizing the benefits of renewable energy investments.

19. 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, founded in 2018 and based in Buffalo Grove, Illinois, is a private company that specializes in solar energy solutions for residential customers. With a team of 31 employees, Certasun focuses on providing high-quality solar installations, EV charger installations, and home battery systems, primarily serving homeowners in the Chicago and Milwaukee areas. Their services include comprehensive consultations, ensuring that customers receive tailored solutions that meet their energy needs. Certasun exclusively installs the Tesla Powerwall 3, a prominent home battery storage solution, which allows homeowners to store solar energy for use during outages or peak demand times. The company prides itself on delivering a superior customer experience through in-house services, maintaining a strong reputation with high ratings on review platforms. Certasun also engages in educating customers about solar energy benefits and available incentives, further solidifying their role in the renewable energy sector.

20. 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, established in 2009 and based in Chicago, Illinois, is a private company that specializes in renewable energy solutions. With a team of 19 employees, they focus on providing tailored solar energy services for residential, commercial, and municipal clients across the Midwest. Windfree Solar offers a comprehensive range of services, including solar installation and energy storage systems. Their energy storage solutions are designed to help customers maximize the use of solar energy, ensuring power availability even when the sun isn't shining. The company is also recognized as a certified Minority Owned Business (MBE) and an Equity Eligible Contractor (EEC), reflecting their commitment to community engagement and sustainability. Windfree Solar has successfully completed numerous projects, helping clients reduce energy costs and carbon footprints while promoting the adoption of clean energy technologies.

21. American Energy Technologies Company

• Website: usaenergytech.com
• Ownership type: Family Owned
• Headquarters: Arlington Heights, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $150,000, November 2012
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: american-energy-technologies

American Energy Technologies Company (AETC), founded in 2009 and based in Arlington Heights, Illinois, is a family-owned manufacturing firm that focuses on energy technologies and advanced materials. The company has carved out a niche in the energy storage sector by producing a variety of batteries, including primary and rechargeable types. AETC has developed expertise in battery electrochemistry, offering at least 15 commercially viable cell chemistries. Their products are often customized to meet the specific requirements of their clients, which include businesses in energy storage and materials science. AETC emphasizes research and development, operating a fully functional laboratory and pilot plants to support innovation. They also provide engineering services and business development support, helping clients navigate the complexities of bringing new energy technologies to market. AETC's commitment to quality and sustainability is evident in their operations, which are designed to minimize environmental impact while maximizing efficiency.

22. ComAp Americas

• Website: comapllc.com
• Ownership type: Private
• Headquarters: Roscoe, Illinois, United States (USA)
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: comap-llc

ComAp Americas, based in Roscoe, Illinois, is a private technology company founded in 2006. It specializes in energy control solutions, providing a range of products that include controllers for power generation and energy management systems. The company serves customers primarily in the energy sector, helping them optimize energy efficiency and integrate renewable sources into their operations. ComAp's offerings include advanced controllers for Battery Energy Storage Systems (BESS), microgrid applications, and hybrid energy management. They also provide services such as training and cybersecurity to enhance their product capabilities. With a global presence and a focus on sustainability, ComAp is positioned to support the transition to cleaner energy solutions.

23. C&C Power, Inc.

• Website: ccpower.com
• Ownership type: Private
• Headquarters: Carol Stream, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1993
• Headcount: 51-200
• LinkedIn: c%26c-power-inc-

C&C Power, Inc., founded in 1993 and based in Carol Stream, Illinois, is a private company that specializes in energy management solutions. The firm focuses on battery backup systems, power distribution, and monitoring technologies. Their product offerings include battery cabinets, chargers, disconnects, and various power distribution units. C&C Power serves critical sectors such as telecommunications, data centers, and industrial applications, ensuring that these industries maintain uninterrupted power supply and data security. The company emphasizes innovation in battery technology and monitoring systems, which are crucial for preventing failures and ensuring safety in mission-critical environments. With a dedicated team of engineers, C&C Power continues to develop solutions that meet the evolving needs of their clients in the energy storage market.

24. J.F. Edwards Construction Company

• Website: jfecc.net
• Ownership type: Private
• Headquarters: Geneseo, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1947
• Headcount: 201-500
• LinkedIn: j-f-edwards-construction

J.F. Edwards Construction Company, founded in 1947 and based in Geneseo, Illinois, is a private electrical contractor specializing in renewable energy solutions. With a workforce of approximately 201-500 employees, the company has built a solid reputation over its 75-year history. JFECC focuses on the construction and installation of electrical systems for wind and solar power projects, catering primarily to general contractors and developers across the United States. Their services extend to project management, high voltage work, and notably, battery energy storage systems (BESS). This positions them as a significant contributor to the renewable energy sector, as they not only support the generation of renewable energy but also enhance its storage capabilities. The company was acquired by the Visabeira Group in 2021, which further strengthens its operational capacity and market reach in energy systems construction.

Energy Storage Insights: Key Companies in Illinois

Company	Headquarter	Size	Founded	Ownership
GlidePath Power Solutions	Chicago, Illinois, United States (USA)	11-50	2013	Venture Capital
Hecate Energy LLC	Chicago, Illinois, United States (USA)	11-50	2012	Private
NanoGraf Corporation	Chicago, Illinois, United States (USA)	11-50	2012	Venture Capital
Hecate Grid	Chicago, Illinois, United States (USA)	11-50	2018	Private
Verde Solutions	Chicago, Illinois, United States (USA)	11-50	2012	Corporate
ENGIE Distributed Renewables	Chicago, Illinois, United States (USA)	51-200	2008	Private
Volta Energy Technologies	Warrenville, Illinois, United States (USA)	11-50	2017	Private
IHI Terrasun Solutions	Chicago, Illinois, United States (USA)	51-200	2014	Private
Endurant Energy	Chicago, Illinois, United States (USA)	11-50	2005	Corporate
Firefly Energy	Peoria, Illinois, United States (USA)	1-10	2003	Corporate
Tron Solar	Vernon Hills, Illinois, United States (USA)	51-200	2018	Private
ELM Companies	Peoria, Illinois, United States (USA)	501-1000	1998	Corporate
Cultivate Power	Chicago, Illinois, United States (USA)	11-50	2022	Venture Capital
Nova Clean Energy	Chicago, Illinois, United States (USA)	11-50	2022	Private
United American Marketing	Oak Brook, Illinois, United States (USA)	51-200	2013	Private
CDP Energy	Chicago, Illinois, United States (USA)	51-200	2000	Private
93Energy	Skokie, Illinois, United States (USA)	11-50	2018	Private
Continental Energy Solutions	Oak Brook, Illinois, United States (USA)	11-50	2009	Family Owned
Certasun	Buffalo Grove, Illinois, United States (USA)	11-50	2018	Private
Windfree Solar	Chicago, Illinois, United States (USA)	11-50	2009	Private
American Energy Technologies Company	Arlington Heights, Illinois, United States (USA)	11-50	2009	Family Owned
ComAp Americas	Roscoe, Illinois, United States (USA)	11-50	2006	Private
C&C Power, Inc.	Carol Stream, Illinois, United States (USA)	51-200	1993	Private
J.F. Edwards Construction Company	Geneseo, Illinois, United States (USA)	201-500	1947	Private

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