EFS Energy Inc.

EFS Energy Inc., headquartered in St. Louis, Missouri, is a leading solar energy solutions provider serving the Midwest since 2011. The company specializes in designing and installing customized solar photovoltaic systems for commercial enterprises, educational institutions, agricultural operations, municipal/government entities, and residential customers. With over 650 completed projects and more than 15 MW of solar installed, EFS Energy has established itself as one of the most experienced firms in its region.
The company’s approach emphasizes tailored solutions that maximize energy efficiency and long-term savings while supporting clients’ sustainability goals. EFS Energy offers comprehensive services including consultation, system design/engineering using high-quality components (such as Silfab Elite panels), permitting assistance, installation by certified professionals, ongoing maintenance packages with monitoring/cleaning, and flexible financing options to make solar accessible to a wide range of customers.
EFS Energy holds certifications from industry bodies such as NABCEP and maintains memberships with organizations like the Missouri Solar Energy Industry Association and U.S. Green Building Council—demonstrating its commitment to quality standards and sustainable business practices.
Under founder Paul McKnight’s leadership, EFS prioritizes transparency throughout every project phase—from initial consultation through construction to post-installation support—ensuring clients receive reliable service without compromise on integrity or performance.