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Day One Solar reviews
• updated MAR 3, 2026Loading map...
The Verdict
Day One Solar earned our recommendation after we analyzed dozens of reviews and found a pattern of reliable installations and standout follow-through. We tracked 27 mentions of workmanship quality and couldn't find a single negative comment, and 21 reviewers went out of their way to praise post-sale support. One customer waited months before writing a review specifically to test whether the company would ghost them after cashing the check. They didn't. Another saw Day One troubleshoot a tripped breaker for weeks, ultimately rewiring from the main panel to the inverter to solve it, four years after the original install. The company monitors systems remotely and emails customers when connectivity drops. In one review, a technician spent an hour diagnosing a backlit-sign wiring issue and refused payment because the job was too small to bill. (Yes, really.) You won't find cheaper quotes in every scenario, but you will find a local crew who answers the phone years later when something breaks.
If you want the absolute lowest bid, keep shopping. But if you care whether your installer will still troubleshoot your system four years from now, Day One Solar is worth the premium.
3 Stories That Stood Out
Bruce B. discovered in August 2023 that his nearly four-year-old rooftop solar system — which had been flawless until then — started tripping the main panel breaker. He contacted Megan at Day One Solar, and she sent a technician out immediately; what followed was several rounds of troubleshooting as the team worked persistently to isolate a stubborn electrical fault. After testing and elimination of other causes, the crew made the ultimately correct call to pull new wire from the main panel to the inverter, and that replacement stopped the breaker from tripping. The install team had originally won the job four years earlier with the low bid, but they didn’t treat the system like someone else’s problem: they returned promptly, stayed professional and pleasant on site, and stood behind both the equipment and their workmanship. The detail that sticks — a low-bid installer coming back years later, digging into a difficult diagnosis and fixing it by replacing the panel-to-inverter wiring — is what he remembers most.
Ty chose Day One Solar to install a combined solar and battery system on his home and deliberately waited several months after the crew left to judge how the company would handle follow-up. He discovered they stayed engaged — checking back, making sure everything was working, and addressing any concerns. The installers arrived professional, left a neat, well-executed array on the roof, and the workmanship looked attractive and tidy. When questions did come up, Megan repeatedly tracked down clear answers and kept communication moving. More than the spotless installation, what stuck with him was the consistent post-install attention and the dependable point of contact.
Ty Tyson phoned after work because a solar panel wiring job for an outdoor back-lit sign wouldn’t behave. The next morning a pleasant office manager called back, gathered details, looped him into an email to the team, and promised a service tech would come that afternoon. Early in the afternoon Ben, a service/project manager, showed up at the facility, spent about an hour diagnosing and working through the problem, and walked Ty through why the wiring had failed and how he fixed it in plain, patient terms. When Ty asked for an invoice, Ben declined to charge—calling the issue minor and admitting he enjoyed the challenge—so the repair came at no cost. He left with a functioning sign, a clear explanation of the fix, and the memory of a same-day, no-fee service that made Day One Solar stand out in Santa Cruz County.
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 90
Clean Record
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 12 years
Operating longer than most installers in the market.
BBB Rating: A+
Excellent BBB standing. Strong complaint resolution.
Natural Review Patterns
Reviews were posted naturally over time.
What You Can Expect
Daniel O. had Day One Solar put a home battery backup unit on his ranch-style house a few years ago and later upgraded it when a better system became available. He found the company consistently reasonably priced, responsive, and easy to deal with. Megan, Matt and Ray guided him through both the original install and the upgrade, patiently answering questions whenever he had them. The detail that stands out is the ongoing support and clear upgrade path — he still turns to the same team for answers, which is what stuck with him.
Bruce B. discovered in August 2023 that his nearly four-year-old rooftop solar system — which had been flawless until then — started tripping the main panel breaker. He contacted Megan at Day One Solar, and she sent a technician out immediately; what followed was several rounds of troubleshooting as the team worked persistently to isolate a stubborn electrical fault. After testing and elimination of other causes, the crew made the ultimately correct call to pull new wire from the main panel to the inverter, and that replacement stopped the breaker from tripping. The install team had originally won the job four years earlier with the low bid, but they didn’t treat the system like someone else’s problem: they returned promptly, stayed professional and pleasant on site, and stood behind both the equipment and their workmanship. The detail that sticks — a low-bid installer coming back years later, digging into a difficult diagnosis and fixing it by replacing the panel-to-inverter wiring — is what he remembers most.
Sigrid B. has worked with Tony and his Day One crew twice — once on a nonprofit project in 2017 and more recently on her own roof in Aptos. She helped support the nonprofit effort, where Day One delivered a fairly complex 66 kW system that combined ground mounts and roof panels. They completed that job at a competitive price, and more than two years later the system is still running smoothly and the nonprofit is seeing real savings on its bills. For her house, Day One installed a 6.5 kW rooftop array. From first contact to finished installation took under three months overall (even with summer travel and vacations causing delays), and it only took about one month from the time she signed the contract to having the panels up. The crew worked in a friendly, efficient, professional manner, and the pricing again felt very attractive. What stood out was the team’s range: the same crew handled a complicated commercial-scale ground-and-roof 66 kW project and then turned around a tidy 6.5 kW residential install quickly — both at attractive prices and with systems that performed as expected.
Long-term Satisfaction
Long-term satisfaction for Day One Solar holds steady at 5.0 ★. This is better than 95% of installers we looked at.
Long-term reviews carry the most weight in our methodology because they are most representative of what you should be paying for: a system that will perform for years.