Sun Diego Solar Construction reviews
• last updated FEB 26, 2026Loading map...
The Verdict
Sun Diego Solar offers competitive pricing and solid installation work, but sizing mistakes have cost some customers thousands. We found 13 reviewers who praised the crew's workmanship without a single complaint about install quality. One homeowner hired them three separate times for solar, EV charger, and pool electrical work, and felt comfortable leaving her home unlocked while the crew worked. The pricing stands out. Multiple reviewers compared quotes and chose Sun Diego because the owner's low overhead beat corporate installers by thousands for identical equipment. But two customers report the same frustrating outcome: they provided their utility bills, the system was undersized, and they now pay SDG&E every month despite having unused roof space. When they asked the company to fix it, they were quoted $5,000 for the additional panels. One reviewer who avoided this trap recommends oversizing your system by 5 to 10 percent from the start, since you're no longer going to cringe when summer bills arrive.
If you're comfortable double-checking the system size yourself and can verify the proposal matches your actual usage, Sun Diego's pricing and installation quality make them a solid pick. But if you expect the installer to get the sizing right without your oversight, the risk of an expensive correction isn't worth the upfront savings.
Reviews That Shaped Our Verdict
Fred realized he needed a new roof and decided it was the perfect moment to add solar, so he collected five quotes and learned more about the process with each one. He chose Rick from Sun Diego Solar because Rick laid out options clearly and proposed a system and price that made sense. He appreciated that Rick didn’t just sell panels — Rick connected him with an excellent roofer and coordinated the work, so the roof replacement and solar install proceeded quickly and efficiently. The crew finished promptly, the equipment matched expectations, and after four SDG&E bills the system’s performance confirmed its efficiency. What stuck with him most was having a single knowledgeable point of contact who handled both the solar plan and the roofing recommendation, which smoothed the whole project.
GGG had Sun Diego Solar replace the old panels on a modest home a couple years ago and quickly discovered the new array was undersized — they now receive SDG&E bills for power the system doesn't cover, something that never happened before the upgrade. They had handed the installer an old bill showing actual usage, yet the company still installed a smaller system and left visible empty space on the racking where additional modules would fit. When they pressed the company about the shortfall, Sun Diego Solar insisted on a $5,000 charge to add the missing panels even though the sizing error came from the installation. The crew was friendly and the work finished in a somewhat timely way, but the persistent utility charges and the sight of unused rack space on the roof upset them every time they look at it. The detail that stays with GGG: an "upgrade" that left empty roof real estate and a $5,000 repair bill to fix the installer's mistake.
Jamie S. reached out to Sun Diego Solar & Construction for work on a residential solar system and discovered the owner, Rick, was also a licensed electrician — a detail that changed the whole project. They started with solar work and appreciated clear communication and straightforward pricing, then asked Rick to handle the electrical for a pool and hot tub after receiving wildly different quotes from other contractors. Rick and his crew completed the pool and hot tub wiring, and later returned to install an outdoor Tesla charger that now brings the car up to speed quickly. Because Jamie had to leave the house and garage open while crews worked, trust mattered; they felt completely comfortable with the team moving in and out of the home, and even the dogs warmed to the crew. Other tradespeople on the job noticed and complimented the neat, professional workmanship. The memorable takeaway: having an owner-operated company that combines solar expertise with licensed electrical work cut through confusing bids and built enough trust that Jamie will call Rick first whenever a job fits his skill set.
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What You Can Expect
GGG had Sun Diego Solar replace the old panels on a modest home a couple years ago and quickly discovered the new array was undersized — they now receive SDG&E bills for power the system doesn't cover, something that never happened before the upgrade. They had handed the installer an old bill showing actual usage, yet the company still installed a smaller system and left visible empty space on the racking where additional modules would fit. When they pressed the company about the shortfall, Sun Diego Solar insisted on a $5,000 charge to add the missing panels even though the sizing error came from the installation. The crew was friendly and the work finished in a somewhat timely way, but the persistent utility charges and the sight of unused rack space on the roof upset them every time they look at it. The detail that stays with GGG: an "upgrade" that left empty roof real estate and a $5,000 repair bill to fix the installer's mistake.
Valentine had Sun Diego Solar replace the old panels on their home a couple years ago. The crew was friendly and the job finished in a somewhat timely way, but the system ended up undersized. After the upgrade they started getting SDG&E bills for power the panels no longer covered — something that never happened before. Even though they gave the installer their previous bill to show usage, Sun Diego left empty space on the racking where more panels could fit and sized the system too small. When they raised the issue, the company wanted $5,000 to add panels despite the shortfall being the installer’s mistake. The sight of the wasted racking and that $5,000 fix keeps bothering them every time they look at the roof; their clear takeaway is to pick a different installer unless you’re prepared to pay to correct someone else’s error.
Jeff R. chose Sun Diego Solar for a residential rooftop system and discovered their clearest advantage upfront: a noticeably lower price thanks to low overhead. He found the company handled the paperwork end-to-end—pulling permits for him—while walking him through options for panels, battery storage, and monitoring without any high-pressure salesmanship. The whole process moved quickly: from the first conversation to a finished install in just a few weeks. The installation has been sitting on his primary residence since April 2015 and has run without issues, which he points to as proof that a cheaper bid didn’t mean lower quality. He still gets teased by a friend for hunting bargains, but the trouble-free, long-running system is the detail that matters to him.