San Marcos Solar Company

Semper Solaris – San Marcos Solar and Roofing Company

#1 Trusted Solar Company in San Diego County

We also serve Bakersfield, Chico, Fresno, Inland Empire, Los Angeles, Monterey, Orange County, Palm Springs, Riverside, Sacramento, and San Francisco

Find out about our zero-down solar solution

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San Diego – Solar Capital of the U.S.

Semper Solaris Supports Our Military

Semper Solaris is honored to be part of the movement to make San Diego 100% renewable by 2035. San Diego’s commitment to clean energy is setting a worldwide example. We believe that the best way to reach San Diego’s goal is to make solar energy personal, hassle free, and easy to understand. Solar energy will save you money on your energy bills and give you the freedom to control your own energy production. Wouldn’t you like to stop sending the electric company a check every month? Installing a solar energy system from Semper Solaris will set you free from the electric company. San Diego has been blessed with a perfect climate for solar – mild temperatures, clear skies and sunshine every day. There’s no better place to go solar than San Diego. Our city has twice been named the solar capital of the United States, with the highest number of PV systems in 2009 and 2012.

The Time to Go Solar is Now

Solar prices have fallen 80% in recent years. Meanwhile, utility bills have continued to rise. Install American Made solar panels on your home to invest in your financial stability. Solar energy usage continues to rise as the United States works to meet national clean energy standards set at the Paris Climate Talks. Semper Solaris wants to make solar power simple for you. It’s a math problem – going solar will save you money on your monthly bills.


Our Military Roots

Co Founder Kelly Shawhan and family

As a Captain in the US Marine Corps trust means everything. Trust, to be there for my Marines. Trust, to be the expert. Trust, to get the job done right. That same philosophy stayed with me for the past 20 years as a contractor and a solar specialist. Solar can be complicated, but at Semper Solaris we pride ourselves on taking the time to help you understand how solar works and how to choose the right system. Find out why homeowners all over San Diego trust Semper Solaris.
-Kelly Shawhan
Co-founder, Semper Solaris

Co Founder John Almond and Family

Solar power is all about the freedom to afford to run your AC. We make solar simple, stripped of hype, high pressure and high prices, the basic reality of solar electricity is simple. It’s a math problem, with an obvious answer. No land needs to be bought or leased, as it is already present. No additional infrastructure needs to be installed, as the home wiring is generally sufficient and the home is already tied into the grid. With current prices as low as they are, there will likely never be a better time to go solar.
-John Almond
Co-founder, Semper Solaris

See How Gary & Tiffany Got a ZERO Energy Bill with Semper Solaris!

"With its sunny climate and history of innovation, Fresno is the perfect city for solar power. Semper Solaris is a locally and veteran-owned business ​with  over 26 years industry experience​, and we're happy to serve the Fresno area. Semper Solaris uses the most efficient, most durable ​American-designed ​ solar panels​, and we have an A+ customer service rating with the Better Business Bureau--so call us today​ to schedule your free energy analysis and find out how much you can save by going Solar...American Style​!​"

Go solar in 3 easy steps

Energy Use & Site Analysis

Our friendly representative will visit your location, provide helpful tips on energy use, crunch the numbers on your usage and determine the best way to deploy your solar array to save you the most money.

Preparation and Installation

We take care of all plans, permits, and engineering and then our skilled technicians will arrive to install your system in just a few short days. We specialize in perfection.

Power on and Enjoy

All of our systems come with easy performance monitoring. You can just sit back, relax and enjoy as your savings rocket sky high.

Go green with San Marcos Solar to cut your costs big time

San Marcos – Try Solar Today

San Marcos, located in North County, San Diego, is a great place for all kinds of family activities. In recent years, San Marcos has become a popular hiking destination among residents, with unique spots like Double Peak. Double Peak Park gives hikers a full view of the whole city, and has places to picnic and play. Many San Marcos locals play at the golf courses, such as St. Mark Golf Course. San Marcos also enjoys a warm climate, which makes it perfect for hiking and golfing—as well as perfect for installing solar panels. San Diego County residents, whether in the city or in North County, have long known that living in San Diego can be expensive. In fact, SDG&E’s electricity rates alone are some of the highest in the continental United States–and have gone up by nearly 500% from 2001 to 2015. This makes solar panels a perfect option for San Diego County residents.

Going Solar Now

Now is a better time than ever before to choose to go solar. Solar panels have only gotten better and better with time, and are now more energy efficiency than ever before. Not only that, but they’ve become more and more affordable as more people have chosen to go solar, and have been at a steady low cost. Installing solar panels now is just a simple math equation: pay the cost of installing solar panels once, and save forever on your electricity bill. In fact, some homeowners produce so much energy through their solar panels that the electric company will compensate them for the extra energy. Not only that, but you can save thousands of dollars on your solar panel installation today with various government tax credits and rebates—all of which may soon disappear under a new government administration. “Grid parity” has been reached in California, meaning that the cost of installing solar panels on your home is officially lower than the average cost of paying electric bills. Why continue paying into a system that only gets more and more expensive with time, when you can install today and start saving?

 Choosing Semper Solaris

We believe Semper Solaris is the best choice for your solar panel installation. We are the fastest growing company for solar panel installation in California, and most of our business comes from referrals and recommendations. We have many satisfied customers, so much so that the Better Business Bureau has given us an A+ rating for our customer service. Semper Solaris is also known for our military background and values. We love to hire veterans, and also offer special discounts to veterans, current military personnel, first responders, and their families. Our business model is structured around military values like strong communication, personal responsibility and, of course, “Semper Fidelis”—always faithful. Our team members are certified, well trained, and are friendly and on time. At Semper Solaris, we also only use American Made solar panels, which are also designed in the United States. We believe that American panels are the best in the market in efficiency and durability. These panels have set world records for their efficiency, and also significantly more resistant to breakage, heat damage, and cracking due to a specific copper backing. Our team is happy to help you find the best solar panel installation option for your home and your energy needs—so call us today!

Solar Panels Positioned Perfectly on clay Tile Roof

Semper Solaris – San Diego Solar and Roofing Corporate Office

1805 John Towers Avenue
El Cajon, CA. 92020
(619) 357-4142

Semper Solaris – San Diego Solar and Roofing Company

964 Fifth Ave. #510
San Diego, CA. 92101
(619) 432-4222

We proudly serve these cities in San Diego County: Carlsbad, Chula Vista, Coronado, Del Mar, El Cajon, Encinitas, Escondido, Imperial Beach, La Mesa, Lemon Grove, National City, Oceanside, Poway, San Diego, San Marcos, Santee, Solana Beach, and Vista.

Hero Highlight: Pros and Cons of Solar

Semper Solaris' Executive Director of Operations Robert Bessler joins San Diego's Approved Home Pros for their exclusive Hero Highlights show on CW 6 TV. As a Hero Channel Partner, Semper Solaris is an expert in Hero Financing and energy efficient solar and roofing home upgrades. See yourself how much you can save by going solar today.

Best Roofing Repair Services

Enlist the roofing experts

Why wait until your whole roof needs to be replaced? Repair it now before the damage spreads!

Solar Maintenance, Diagnosis, and Repair Service

Is your solar power system a few years old? Is it not producing the amount of solar energy it should? Are you seeing cracked glass on one of your solar panels? For all of these solar problems, and more, Semper Solaris is the solar energy company you want servicing your solar power system.

Semper Solaris Workers Performing Maintenance Work on Solar Panels




"We are incredibly happy with the results and have immediately witnessed the cost savings. We can’t tell you how happy we have been with this entire process." - Dan & Tracy Jackson // Semper Solaris Customer

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