Semper Solaris is the top solar panel installer in El Cajon! Looking for the best solar company near you? You’ve found it. Semper Solaris is a Veteran owned company based in El Cajon providing solar panels, Tesla Powerwall and Enphase solar backup battery installations, roofing, and HVAC heating and air conditioning services. Our passion is renewable energy and its benefits to our neighbors in The Box! We hire fellow Veterans and apply military values resulting in the highest level of service for our customers. We also serve San Diego County residents in Miramar, La Mesa, Granite Hills, Blossom Valley, City Heights, Spring Valley, Normal Heights, Rolando Village, San Carlos, Mira Mesa, Lakeside, Rancho San Diego, Bonita, Lemon Grove, Santee, La Presa, Scripps Ranch, Allied Gardens, Grossmont, Jamul.