Semper Solaris – Bay Area Solar and Roofing Company

#1 Trusted Solar Company in Northern California

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

Find out about our zero-down solar solution

Get a Free On-Site Energy Analysis

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.


Veteran Owned Semper Solaris Supports Our Military


“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

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

Time to Go Solar is Now

The Bay Area solar industry has continued to grow throughout the last few years. Many families are taking advantage of the incentives California has in place for those who install solar panels on their homes. In fact, even the BART has gone solar, saving San Francisco millions of dollars. Solar panels are truly revolutionizing the way homeowners use energy, giving individuals control over their own energy use and freeing them from big energy bills that hurt their livelihoods. Semper Solaris would like to help you join the movement towards affordable, clean energy. We are one of the best solar companies in California, and we are ready to install solar panels on your home.

Why Semper Solaris

Why should you choose Semper Solar as your solar company? Semper Solaris, as the name suggests, is founded upon the principle of always being faithful to our customers. We are a solar company that has deep military roots, and the attributes of respect, honor, and loyalty are important to every team member. We hire many veterans who are looking for new work or who have just come out of the military, which gives them an entrance into civilian life while providing our team with some of the most highly trained, motivated, and honorable individuals in the world. Semper Solaris is excited about helping more people in the Bay Area go solar with a solar company they can trust. Our team is highly trained and motivated to give you the best solar installation experience possible. We work diligently to make sure that every family knows that we are dedicated to their satisfaction by providing thorough, efficient, and punctual service. When we show up at your home, we are always ready to get the job done right the first time. We know that we can provide you with the best solar installation experience in the Bay Area.

Start Saving with Solar Today!

Semper Solaris is dedicated to saving you money with your solar installation. Many of our customers report to saving up to 90% on their energy bills when we install their solar panels. Semper Solaris installs the best solar panels on the market, even giving you the freedom to choose American made solar panels. Giving you the freedom to choose means you have the option to choose the most efficient solar panels in the world. In the solar market, standard solar panels only convert 15-18% of sunlight to energy, our American made solar panels produce over 21%. That’s a much better conversion rate, leading you to more savings and more energy.

So, when you go solar with us, you are enlisting the services of two companies that have an established local presence who are knowledgeable about giving you the best solar installation for your home. When you choose Semper Solaris, we give you the freedom to choose your solar panels. Yes, you are getting the best installation with the best solar power system in the world.

There has never been a better time to go solar. The people of San Francisco and the Bay Area are already making the change to cleaner, greener energy, and Semper Solaris is ready to help your family start saving on your bills today.

Solar Panels Positioned Perfectly on clay Tile Roof

Semper Solaris – Bay Area Solar and Roofing Company

2505 Amaral Court
Hayward, CA. 94544
(650) 727-9272

We proudly serve these cities in the Bay Area: Alameda, Albany, American Canyon, Antioch, Atherton, Belmont, Belvedere, Benicia, Berkeley, Brentwood, Brisbane, Burlingame, Calistoga, Campbell, Clayton, Cloverdale, Colma, Corte Madera, Cotati, Cupertino, Daly City, Danville, Dixon, Dublin, East Palo Alto, El Cerrito, Emeryville, Fairfax, Fairfield, Foster City, Fremont, Gilroy, Half Moon Bay, Hayward, Healdsburg, Hercules, Hillsborough, Lafayette, Larkspur, Livermore, Los Altos, Los Altos Hills, Los Gatos, Martinez, Menlo Park, Mill Valley, Millbrae, Milpitas, Monte Sereno, Morgana, Morgan Hill, Mountain View, Napa, Newark, Novato, Oakland, Oakley, Orinda, Pacifica, Palo Alto, Petaluma, Piedmont, Pinole, Pittsburg, Pleasant Hill, Pleasanton, Portola valley, Redwood City, Richmond, Rio Vista, Rohnert Park, Ross, St. Helena, San Anselmo, San Bruno, San Carlos, San Francisco, San Jose, San Leandro, San Mateo, San Pablo, San Rafael, San Ramon, Santa Clara, Santa Rosa, Saratoga, Sausalito, Sebastopol, Sonoma, South San Francisco, Suisun City, Sunnyvale, Tiburon, Union City, Vacaville, Vallejo, Walnut Creek, Windsor, Woodside, and Yountville.

Current Online Specials

Save $500 when going solar!
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Connect With Us
Corporate Office
Semper Solaris – San Diego Solar and Roofing Corporate Office
1805 John Towers Avenue
El Cajon, CA. 92020
PHONE: (619) 357-4142
Contractor's license: #978152

Semper Solaris – San Diego Solar and Roofing Company
964 Fifth Ave. #510
San Diego, CA 92101
(619) 432-4222

Semper Solaris – Los Angeles Solar and Roofing Company
10713 Norwalk Blvd.
Sante Fe Springs, CA 90670
(213) 634-4313

Semper Solaris – Orange County Solar and Roofing Company
1701 East Edinger Avenue Suite H1
Santa Ana, CA. 92705
(714) 831-3221

Semper Solaris – Bay Area Solar and Roofing Company
2505 Amaral Court
Hayward, CA 94544
(650) 727-9272

Semper Solaris – Inland Empire Solar and Roofing Company
1218 Spring Street
Riverside, CA. 92507
(951) 900-3970

Semper Solaris – Bakersfield Solar and Roofing Company
3600 Pegasus Drive Unit #3
Bakersfield, CA 93308
(661) 577-4888

Semper Solaris – Palm Desert Solar and Roofing Company
74350 Alessandro Dr.
Palm Desert, CA 92260
(760) 263-3366

Semper Solaris – Fresno Solar and Roofing Company
(559) 529-6560

Semper Solaris – Sacramento Solar and Roofing Company
(916) 288-9211

Semper Solaris – Monterey Solar and Roofing Company
(408) 805-3626

Semper Solaris – Alpine Solar and Roofing Company
(619) 773-0002