A1 Sun reviews

Sharon hunted for a local crew to repair an aging commercial solar array — a 206-panel, 7-inverter system that had suffered a decade of wear and tear. After nearly a dozen companies declined to work on an existing installation and pushed for full replacements, she found A1 Sun. Larry and Ben dove into the system, took the time to learn its quirks, and shared practical expertise while remaining patient with her budget. They produced several tailored proposals at different price points, explained the trade-offs of each, and ultimately balanced competitive pricing with unusually attentive service. The team got the array back online just ahead of peak season, with the production statistics looking strong, and Sharon walked away impressed that A1 Sun chose repair over upselling a full teardown — a detail that mattered most to her.

David chose A1 Sun to install solar panels with an Enphase battery backup while replacing his roof, and the whole project came together with fewer surprises than he expected. He had contacted several larger installers who offered combined roof-and-solar quotes, but also reached out to A1 and local roofers, ultimately working with Nicholas Roofing for the roof replacement. A1’s price matched the other bids and, importantly, didn’t spike when small issues cropped up during the work. They took extra care on the south-facing rooflines, figuring out a tighter layout by using slightly smaller panels so the space could hold more modules — a level of layout problem‑solving the other quotes hadn’t done. A1 coordinated seamlessly with Nicholas Roofing and the other contractors and electricians on site: their team showed up at odd times before the formal install to run conduit in the basement and relocate roof vents. They also managed all of the permitting and utility interactions with the City of Berkeley and PG&E, and the people he dealt with up front were the same knowledgeable technicians who would actually do the installation. He ended up with a denser panel layout, integrated battery, a

Robert O. chose the company after a neighbor recommendation and experienced clear, frequent communication from the first meeting through final hookup. He received a detailed analysis of his household energy needs and calculations showing the solar potential of different roof sections. He learned at contract signing that installation would be several months out and accepted that timeline. When crews arrived the work took the two days the company had promised and went smoothly. The team remained professional, transparent, and responsive throughout. What stayed with him was the upfront clarity about the wait and an installation that matched the schedule — the exact reason his neighbors had recommended them.

T N has leaned on A1 for more than a decade—first arranging installations for an uncle, their mother and a family friend, then having A1 put solar on their own house in 2009—and watched the crew return for upgrades over the years. A1 came back in late 2019 to refresh panels and install a complex battery-backup system, and when a PG&E power surge last year fried the battery motherboard, the company replaced the board quickly and at no cost. While performing that warranty repair, technicians discovered heat damage on the undersides of six panels; A1 coordinated with LG to secure replacement modules and swapped the damaged panels out free of charge. What stuck with them was how A1 handled the vendor and warranty logistics, stood behind both the installation and components, and restored the system to full operation without delay.

David R. struggled for a couple of years with a recurring fault on his home's solar system. At first A1 Sun responded more quickly than during an earlier repair and he believed the issue was finally on its way to being resolved, but communication later petered out and the problem returned to an unresolved state — a solid installation paired with unreliable follow-through. After he posted negative comments on Yelp, the company finally came back out: they arrived promptly, took care of the work thoroughly, were personable, and even explained a few electrical things to him. His wife confirmed the crew worked quickly and cleanly, and he settled on four stars. The standout detail that will stick with him is that the fix only came after public escalation — yet when the team showed up, they fixed it well and left him with some useful hands-on knowledge.

Liam S. completed a solar-plus-battery installation with A1 Sun and came away very happy with both the process and the outcome. When a previous contractor fell through, A1 Sun jumped in on short notice and installed the footings while his new roof was being replaced as part of a larger project. They timed the work so he could get the most recent Enphase battery and a meter collar, which helps future-proof the system and reduces the number of separate components for greater reliability. The crew stayed professional and communicated clearly throughout. What stuck with him most was the scheduling flexibility and the decision to install up-to-date Enphase hardware during the roof work, leaving a simpler, more robust setup.

Shin Kato hired A1 Sun to rescue a troubled solar power project after a previous contractor went bankrupt and walked away with client funds, leaving the system half finished. He inherited a messy situation, but A1 Sun didn’t decline the job; they dug in, figured out how to repurpose the footings the prior crew had installed, and redesigned around what was already on the ground. They handled the tedious back-and-forth with PGE personally, staying on top of paperwork and approvals until the utility signed off. What stood out most was their creativity and persistence — they turned a half-baked, abandoned installation into a completed system without making him start over. He wishes he’d engaged them from the beginning; the specific things that convinced him were their willingness to take on a difficult rescue, the practical solution to reuse existing footing work, and the follow-through with the utility.

David B. recently completed a rooftop solar installation with battery backup from A1 Sun. He found the company extremely responsive and professional from the initial consultation through final commissioning, which kept the project running smoothly. Everyone he worked with came across as personable, knowledgeable and responsible, and the crews showed clear pride in their workmanship. He ended up with a solar-plus-storage system and a team he can rely on—what stood out most was their responsiveness at every stage.

Colin wanted a future-ready solar electric system to start moving his home off fossil fuels, and A1 Sun delivered on that goal. He found their assessment and proposal clear and helpful, with competitive pricing that fit the scale he wanted. When a full roof replacement happened at the same time, A1 Sun coordinated smoothly with the roofing contractor so the two jobs aligned. Their designer worked around challenging roof geometry to achieve the system size Colin requested, and the array has been producing strongly since it went live. Installers paid attention to the small details that affect long-term performance, and with consumption monitoring in place the Enphase Enlighten app lets him watch production, on-site use, and exports to PG&E in real time. The memorable part of the experience was the practical problem solving around the roof and a system that not only met his future-ready brief but is already delivering noticeable results.