Commercial Solar Systems in Illinois, Missouri, and Beyond
Since 2011, EFS Energy has worked to strengthen local communities through the power of commercial solar energy. Each system we install across our Midwest service area helps businesses move toward greater energy independence, long-term financial stability, and measurable sustainability goals.
Our engineering team is NABCEP-certified by the North American Board of Certified Energy Practitioners and stays up to date with the latest National Electrical Code (NEC) and UL 3741 rapid-shutdown safety standards. With EFS Energy, you can be confident your solar project is designed and installed with safety, performance, and reliability in mind.
Areas We Serve
While EFS Energy is headquartered in St. Louis, Missouri, we work with businesses across Missouri, Illinois, and bordering states. Our team is available to meet on site, walk your property, and discuss your project in person.
The areas we serve include (but are not limited to):
- Addieville, IL
- Assumption, IL
- Belleville, IL
- Breese, IL
- Carrier Mills, IL
- Caseyville, IL
- Columbia, IL
- Dutzow, MO
- Eureka, MO
- Freeburg, IL
- Germantown, IL
- Imperial, MO
- Marissa, IL
- Mascoutah, IL
- Nashville, IL
- O’Fallon, IL
- Okawville, IL
- Pittsfield, IL
- Shiloh, IL
- St. Louis, MO
- Tamaroa, IL
- Tolono, IL
- Trenton, IL
- Valmeyer, IL
- Washington, MO
Services We Provide
We provide full-service commercial solar solutions for businesses throughout Illinois and Missouri. Our expert team has a deep understanding of regional utilities, permitting requirements, and incentive programs. This knowledge allows us to design solar systems that perform reliably and deliver strong financial results, no matter where your facility is in our service area.
Commercial Solar Consulting
Our process begins with a personalized consultation focused on your location and your business goals. We assess your facility, energy usage, and site conditions, while also factoring in local utility rules and state-specific incentives. You’ll receive a clear project roadmap outlining recommended system size, expected return on investment, available incentives, and a realistic installation timeline. Our goal is to give you the clarity and confidence you need to make informed energy decisions.
Commercial Solar Installation
When it’s time to move forward, our team manages the entire installation process from start to finish. We handle engineering, permitting, construction, and utility interconnection. We coordinate closely with local authorities and utilities across Illinois and Missouri. Throughout the project, we prioritize quality workmanship, proven equipment, and clear communication. Once your system is operational, you can begin reducing energy costs and strengthening your long-term energy strategy.
Who We Serve
We design and install commercial solar systems for a wide range of business and organizations, including:
- Farms and agricultural operations
- Car dealerships and retail businesses
- Schools and educational facilities
- Manufacturing and industrial facilities
- Commercial service providers
Contact Us Today
From farms in Southern Illinois to lumberyards in Central Illinois and beyond, EFS Energy has seen firsthand how a customized solar system can benefit local businesses. Our experienced team is here to answer your questions, evaluate your site, and help you take the next step toward long-term energy savings.
Not sure if you’re in our service area? Contact us today to schedule a consultation and find out.
3407 S. Jefferson Ave.
St. Louis, MO 63118