Christian Roofing
“Very hard workers, clean, respectful, and clear communication from the beginning to the end.”
Best Solar Panel Installers in El Cajon, CA
15 contractors listed · 13 in El Cajon · 1 open 24/7 · 4 open weekends · 14 rated 4.5+
Data verified October 18, 2026
West Coast Heating
“Alexey and Max were on time, they were extremely helpful and friendly.”
Global Heating and Air Conditioning
“Showed up on time, diagnosed the problem immediately, fixed it for less than expected cost-wise, and we had cold air within 20 minutes of when he rolled into the driveway.”
Dana Logsdon Roofing & Solar
“Been very pleased with the quality of work and the workers were friendly.”
Sunlight Solar
“I really appreciate Sunlight Solar's professionalism throughout the installation process and would recommend them to anyone looking for solar for their home.”
EZ Solar & Roofing
“We found the price to be reasonable and the service was impeccable.”
The 15 contractors listed for El Cajon, CA design and install rooftop solar and battery systems. Each entry repeats what the company publishes about certifications, the equipment it fits and its hours, together with star ratings and comments drawn from public reviews.
Area overview: El Cajon, CA
13 of the 15 contractors we list are based in El Cajon; the other 2 serve El Cajon from La Mesa (4 mi) and Santee (4 mi). 14 of the contractors on this page have a rating, from 4.5 to 5.0 across 1,986 reviews; 8 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (92%), responsiveness (91%) and punctuality (83%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "efficient". 1 is open around the clock; 4 are open on Saturdays and 1 on Sundays. 10 show a license on their websites and 2 have a BBB rating of A or A+. Domain records put 11 websites of the contractors on this page at ten or more years old; the oldest dates from 2000. 2 offer emergency call-outs; 6 offer financing or payment plans; 13 give free estimates; 4 are family- or locally-owned and 2 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Can a survey happen outside working hours?
Weekend hours appear for 4 of the 15 contractors here, which is often when a roof survey is easiest to arrange around work. The survey itself wants daylight and dry weather, since someone has to get onto the roof or fly a drone over it to check the covering and measure shading.
Solartech
“Robert Emery did a fantastic job troubleshooting and repairing the solar control valve, thank you Solar Tech & Robert”
Raneri and Long Roofing & Solar
“The best roofing and solar installation company in all of San Diego.”
Aviara Solar Contractors
“We love our solar panels, they look great on our roof and will highly recommend this company to our friends and relatives.”
Orange Solar
“These guys were more knowledgeable about home electrical than others that gave us prices.”
Christian Solar
“My neighbor knew how happy I was with my installation and had Christian Roofing/Solar install a new roof and a solar system on their home and they also are very happy with their job!”
Sunny Solar Power
“I love it when we get calls in their area because I know the job will be done over and above expectation, and under expected cost.”
Southwestern Solar Systems
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Onpoint Solar Panel Cleaning San Diego
“A pleasure to do business with”
Jamar Power Systems
“It's a long process because of permits and things but someone was always available to answer my questions and guide me through the process.”
Why these companies made our list
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