Semper Solaris

Military values meet solar excellence for California homeowners seeking energy independence.

Semper Solaris is a solar installer serving California, based in El Cajon, CA. Founded in 2012, the company brings a 14-year history to every project.

Company's Description

Semper Solaris was founded in 2012 in San Diego by Kelly Shawhan, a former United States Marine Corps Captain, and John Almond, a seasoned business leader with over a decade of construction experience. Shawhan, a cum laude graduate of Miami University of Ohio who attended on a full military scholarship and worked in solar energy since 1989, partnered with Almond to address a clear problem facing California homeowners: the ever-rising costs of traditional energy companies. Together, they saw an opportunity to bring military values—honesty, integrity, and hard work—into the solar industry at a time when aggressive sales tactics dominated the market. The company’s name draws inspiration from the Marine Corps motto “Semper Fidelis,” meaning “always faithful,” reflecting a promise Shawhan made with fellow Marines during a mission in the Philippines in 1985. Starting in the competitive solar market of San Diego, the El Cajon-based solar installer grew by standing out through exceptional customer service and high-quality installations. Their military discipline and attention to detail became the foundation of every solar installation project, earning them a reputation as a trusted, local, veteran-owned business. Semper Solaris is known for actively hiring former Marines and military veterans, recognizing that these professionals bring unmatched dedication, training, and work ethic to home solar projects. Several years after launching, Semper Solaris expanded its services beyond solar panels to include battery storage systems like the Tesla Powerwall and Enphase batteries, residential roofing with Owens Corning products, and HVAC heating and air conditioning services—applying the same military-grade standards to every vertical. Today, the company serves California homeowners throughout San Diego County, Los Angeles County, Orange County, the Bay Area, and beyond, offering comprehensive home improvement solutions that help families achieve energy independence. Semper Solaris has earned recognition as one of California’s most award-winning solar contractors, with 12 solar awards, 18 roofing awards, and over 40 total honors. The company received SunPower’s Residential National Top Producer of the Year and Residential National Dealer of the Year awards in 2016—the first company in SunPower’s 32-year history to win both awards in the same year and to win the dealer award two consecutive years. In 2022, Semper Solaris was recognized as America’s number one solar and battery storage installer. The company has been accredited by the Better Business Bureau since 2013 and maintains an A+ rating. Through the Semper Cares Initiative, the company gives back by providing free solar installations, roofing, and home improvements to deserving veterans and their families, having awarded major home upgrades to over 15 military families at no cost. The company also offers special discounts to military personnel, first responders, and teachers. Semper Solaris installs American-made solar panels from manufacturers like Silfab and Q Cells, paired with inverters from Tesla and Enphase, ensuring California homeowners receive high-quality solar energy systems. With a commitment to quality, service, and community, Semper Solaris continues to expand its reach while instilling core military values into every employee and solar project across the state.

Service Territory

California

Services Offered

Semper Solaris is a veteran-owned solar installer based in El Cajon, California, serving homeowners throughout the state since 2012. The company specializes in residential solar panel installation, battery storage systems including Tesla Powerwall and Enphase batteries, complete roof replacements with Owens Corning products, and heating and air conditioning services. Semper Solaris installs American-made solar panels from Silfab and Q Cells with Tesla and Enphase inverters. The company operates multiple locations across California, including San Diego, the Bay Area, Los Angeles, Orange County, Sacramento, and the Inland Empire. As a full-service home energy provider, Semper Solaris offers integrated solar and battery installations, often paired with roofing and HVAC upgrades for comprehensive home solar solutions.

Why Choose Us

VETERAN-OWNED AND OPERATED: Founded by former Marine Corps Captain Kelly Shawhan, Semper Solaris actively hires military veterans and brings the discipline, integrity, and attention to detail of military service to every solar installation in California.

NATIONALLY RECOGNIZED INSTALLER: Semper Solaris earned SunPower’s Residential National Top Producer and Dealer of the Year awards in 2016—the first company in 32 years to win both in one year—and was named America’s #1 solar and battery installer in 2022.

SEMPER CARES INITIATIVE: Through this ongoing program, the company has provided free solar systems, roofing, and home improvements to over 15 deserving veteran families, while offering special discounts to military personnel, first responders, and teachers throughout California.

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Contact Information

Phone: (619) 357-4142

Address: 1805 John Towers Avenue, El Cajon, CA 92020

Location

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(619) 357-4142