About EFS

Powering Progress in the Heartland

At EFS Energy, we believe solar is more than just smart business, it’s a powerful step toward energy independence, environmental responsibility, and long-term savings. Since founder Paul McKnight created EFS in 2011, we have become a trusted solar partner for commercial, agricultural, and institutional clients across Missouri and Illinois- from St. Louis to Springfield, IL.

Our company was built on a foundation of integrity, purpose, and the drive to make a real impact in our community and beyond. From small farms to large manufacturers, we’ve helped hundreds of clients cut energy costs, unlock incentives, and take control of their energy future. With deep local knowledge, strong industry partnerships, and technical excellence, EFS Energy delivers custom solutions that last.

Our Mission

Our mission is to lead with accountability, deliver with expertise, and empower local businesses to achieve energy independence. We provide reliable solar solutions backed by long-term support, ongoing innovation, and a commitment to performance for the life of every system.

Our Core Values

Legacy

We aim to leave things better than we found them – through high-quality projects, long-term service, and relationships built on trust.

Expertise

We never stop learning. Our team stays sharp through continued education, evolving tech, and staying ahead of an ever-changing industry.

Integrity

We hold ourselves to the highest standards. That means transparency, accountability, and doing the right thing, even when no one’s watching.

Passion

The work we’re doing matters. We’re passionate about solar, sustainability, and solving problems that make a difference. Our energy fuels your energy.

Giving Back

Our team at EFS is inspiring the next generation of solar leaders. Building awareness and understanding of the world-changing benefits of solar energy through education is key to creating a truly sustainable future.

We actively engage with our local communities to share the power and potential of solar energy. Whether it’s schools, community groups, or public events, our team supports education around energy efficiency, sustainability, and how solar works. We know that a brighter tomorrow starts with awareness today.

Meet Our Founder & CEO

PAUL MCKNIGHT

Paul has spent the past 15 years building a career- and a company- focused on making clean energy accessible, reliable, and meaningful. Before founding EFS Energy in 2011, Paul earned his Bachelor of Science in Chemistry from SIU Carbondale and worked as a quality control chemist in the pharmaceutical industry. But it was his passion for renewable energy and technology that pulled him in a new direction to seek opportunities in solar.

As CEO of EFS Energy, Paul finds the most fulfillment in seeing completed projects and happy clients. “When the client is saving money and contributing to a good cause at the same time,” he says, “I feel great about what we are doing as a company.”

For Paul, solar isn’t just about kilowatts, it’s about values. He’s committed to the “triple bottom line”: People, Planet, and Prosperity. As he puts it, “I really enjoy working with other industry professionals that share my values and… interacting with clients who share my vision of investing in a brighter future!”

That’s reflected in the way he leads, the clients he partners with, and the team he’s built. “I like learning about each of my client’s businesses and stories.” He’s equally proud of his team at EFS. Paul is inspired by his team’s “camaraderie, work ethic, and positive outlook on our industry and life in general. I enjoy spending time with each of them, and we encourage each other to achieve more both professionally and personally.”

When he’s not working, Paul can be found hanging out with his kids playing games and sports, cooking up something new on the grill, or caring for his growing collection of tropical plants and succulents.

His advice to anyone looking to break into solar? Ethics matter. Strive to “get a job with a company that has above board business ethics. Solar is a great industry if you get in with the right people.”

Looking ahead, Paul is excited to share that “Energy storage is the next big wave and EFS will be at the front of it!”

Meet Our Team

Eric Swillinger

Chief Operating Officer

Bio

Manda Cloninger

Financial & Operations Associate

Bio

Michelle Davidson

Director of Construction

Bio

Justin Evans

Solar Consultant

Bio

Miles Henke

O&M Field Specialist

Bio

Ridge Hillyard

Site Supervisor

Bio

Jacob McAfee

Project Engineer

Bio

Elan McMillin

Director of Business Development

Bio

Power Your Progress with a Partner You Can Trust

At EFS Energy, we don’t just install solar. We build relationships grounded in honesty, service, and long-term success. From your first consultation to long-term support, our team delivers real savings, energy stability, and trusted results. Our team is here to guide you every step of the way, with custom solar solutions designed to meet your goals and support your future. Join the hundreds of businesses across Illinois and Missouri who’ve already made the switch to solar.

Schedule your free 30-minute consultation today and discover how solar can strengthen your business, your community, and your bottom line, for decades to come.

3407 S. Jefferson Ave.
St. Louis, MO 63118

844-33-SOLAR