EFS Energy

EFS Energy

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EFS Energy is a premier solar installer in the Midwest. Helping customers achieve energy independence

03/26/2026

National solar companies come and go. Local expertise is what actually protects your investment.

For 15 years, EFS Energy has focused almost exclusively on Missouri and Illinois, mastering the incentive programs, utility relationships, and engineering challenges that are unique to our region.

650+ installations. $13M+ in incentives secured. A local team that stays with you long after the system is turned on.

If you're a business owner thinking about solar, you deserve a partner who knows your market, not just your roof.

Photos from EFS Energy's post 12/30/2025

Cheers to a crazy and wonderful 2025.

EFS Energy has been building solar through enough market cycles to know that challenges come and go—but well-designed projects and disciplined ex*****on endure.

This past year reinforced what we’ve always believed: strong partnerships, thoughtful engineering, and doing the work the right way still matter. That foundation gives us confidence and momentum as we move forward.

We look ahead to continuing to serve our communities with renewable energy solutions that strengthen the grid, reduce long-term operating costs, and deliver durable value for system owners.

Thank you to our clients and partners who continue to place their trust in EFS Energy.

Still here. Still building.

Happy New Year!

11/19/2025

"We had heard about solar tax incentives from the state and local government. EFS had a good knowledge of how the Illinois program worked. How to submit it and follow up with it." - Mike Auffenberg, owner of Auffenberg car dealerships.

We work on behalf of our clients to secure federal tax credits, state incentives, and depreciation benefits to optimize their solar investment. Contact us to learn more about the incentives available for your business.

10/09/2025

🔆 Curious if your roof or property is right for solar? Here’s how it works:

1️⃣ Consultation: We assess your energy needs and roof or ground suitability using advanced shade and site analysis.
2️⃣ Design: We customize a solar system to maximize savings, with optional battery storage for added energy independence and backup power.
3️⃣ Permitting & Incentives: We handle all the paperwork for federal, state, and utility programs.
4️⃣ Installation: Our NABCEP-certified team ensures a smooth, professional setup.
5️⃣ Grid Connection: Your system connects to the grid with net metering, earning you credits for the energy you produce.

🌞 Learn more about how solar could work for you — and start exploring the long-term benefits of clean energy today.

10/03/2025

EFS Energy client Wehmeyer Seed in Macoutah IL, saw a return on their commercial solar investment in less than 3 years. Now, the system is providing $30,000 in annual energy savings.

Want to see how much your business can save? Contact us for a no obligation quote today.

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Telephone

Address


3407 S Jefferson Avenue
St. Louis, MO
63118

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm