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OSullivan Green Solar reviews
• updated MAR 3, 2026Loading map...
The Verdict
O'Sullivan Green Solar installs faster and cleaner than most solar companies we've analyzed. We found reviews from homeowners who watched their entire system go up in one day, and 11 reviewers specifically called out how fast the crew worked without sacrificing quality. One customer noted that Tim's installers painted the conduit to match the house color so there were no ugly silver pipes running everywhere, a level of detail we rarely see mentioned. What sets this company apart is Tim's technical expertise on tricky roofs. We saw multiple stories of homeowners with metal tile roofs or shallow-beam Eichler-style construction who were told by other installers they'd have to wait until after signing to learn the installation plan. Tim walked them through the exact support placement before contract, which gave them confidence the system would actually work. He uses higher-quality panels and microinverters (25-year warranties on both) at prices competitive with companies quoting cheaper equipment. The one recurring friction point: PG&E and inspection delays stretched timelines after installation was complete, though Tim handled all the paperwork and kept customers updated throughout.
If you want the cheapest quote in town, keep shopping. But if you have a metal roof, care about conduit aesthetics, or want an owner who'll explain the beam layout before you sign, Tim's worth the slight premium.
3 Stories That Stood Out
Robert C. opted for O'Sullivan Green Solar after comparing bids from Sunrun and SunPower and taking a friend's referral, and what sold him was how the finished job looks — conduit routed neatly and painted to match the house so there are no silver pipes spoiling the roofline. He discovered that O'Sullivan was quoting state-of-the-art panels and microinverters at roughly the same price the other companies wanted for lower-efficiency equipment. Tim, the owner, walked him through the process in plain language, stayed responsive and punctual, and the crew completed the installation in about half the originally estimated time with no surprises. The team also took care to optimize the conduit routing for the cleanest fit, which Robert hasn't seen anywhere else in his neighborhood. He typically only writes reviews when an experience is exceptional, and he gave his highest satisfaction rating to Tim at O'Sullivan Green Solar.
Kim L. began looking into solar after a pushy cold-call about a lease, and after comparing almost a dozen proposals she settled on Tim at OSullivan Green Solar. She felt the difference immediately: Tim stayed involved from the initial quote through installation and inspections, and his years of experience showed in how confidently he handled tricky details. The house is almost Eichler-style with no attic and relatively shallow roof beams, so the mounting had to be exact. Many installers either didn’t know or wouldn’t commit to a clear plan until after signing; Tim instead walked through exactly how the supports would be anchored so nothing would penetrate or overload the shallower beams. That hands-on explanation was the reason she felt comfortable moving forward. Tim’s price landed right in the same range as other bids, but his practical insight made the offer feel fair. They ended up with REC panels, Enphase equipment, and a Franklin WH — all set up smoothly with Tim’s help — and the array has been producing for several weeks now. The slowest parts were the municipal inspections and getting PGE squared away, but the OSullivan team handled those hurdles. The interaction left a
After gathering four bids for solar on her San Jose family home, Jennifer picked O'Sullivan based on a friend's referral. Though their quote wasn't the cheapest, she discovered that Tim's willingness to meet in person, walk through every question, and communicate clearly made the extra cost feel worthwhile. She also learned to compare panel types closely — a $20,000 proposal using lower-quality panels isn't necessarily a better deal than a $22,000 package with higher-grade equipment. The installation moved far quicker than she expected. When PG&E pushed the connection date at the last minute, Tim alerted them right away and hustled to get a new appointment scheduled. On the rescheduled day everything hooked up smoothly, and he dropped by once more — fitting their work schedules — to answer final questions and explain what to expect on upcoming PG&E bills. All of this happened while two small children in the house were vying for attention, which made Tim's patience and flexibility stand out even more. What lingered for her was that the project never felt like a series of handoffs: Tim stayed involved, smoothed over a utility delay, and made the technical and billing details easy
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 97
Clean Record
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 11 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
Michael had a PV system installed a few years ago and only recently realized he never posted feedback. He found Tim to be a genuine partner: the installation unfolded without fuss, the company handled all the details, and he never had to chase loose ends. Tim stayed friendly and helpful the whole way, turning what can be a stressful project into an effortless one. Years later, what stuck with him most was how thoroughly the team managed the process — that hands-off, dependable service is what he points out to anyone considering solar or storage.
Les had panels installed by Tim back in 2019, and after enduring at least four outages—one that stretched almost two days—he decided to add battery backup. He called Tim, who came back out, did a site survey and a follow-up meeting, and they moved forward with a contract for the battery installation. Installers met the delivery truck and got to work immediately; they stayed tidy, answered every question, and left an installation that looks professional and clean. When the work finished, Tim returned to bring the batteries online and walked him through the FranklinWH app so he could operate the system confidently. The whole process felt swift and well-managed, and as an extra touch the batteries “pop” visually at night—something Les still notices and enjoys.
Kim L. began looking into solar after a pushy cold-call about a lease, and after comparing almost a dozen proposals she settled on Tim at OSullivan Green Solar. She felt the difference immediately: Tim stayed involved from the initial quote through installation and inspections, and his years of experience showed in how confidently he handled tricky details. The house is almost Eichler-style with no attic and relatively shallow roof beams, so the mounting had to be exact. Many installers either didn’t know or wouldn’t commit to a clear plan until after signing; Tim instead walked through exactly how the supports would be anchored so nothing would penetrate or overload the shallower beams. That hands-on explanation was the reason she felt comfortable moving forward. Tim’s price landed right in the same range as other bids, but his practical insight made the offer feel fair. They ended up with REC panels, Enphase equipment, and a Franklin WH — all set up smoothly with Tim’s help — and the array has been producing for several weeks now. The slowest parts were the municipal inspections and getting PGE squared away, but the OSullivan team handled those hurdles. The interaction left a
Winston H. chose a local company for his home solar installation and found Tim to be a fantastic person to work with. He experienced a level of care and craftsmanship that stood out next to what he’s seen from large national vendors. The crew completed the installation quickly and with clear precision, leaving a neatly finished system. The standout detail for him was the hands-on, personal approach — a single point of contact in Tim and a tidy, fast install that made the difference in the overall experience.
Erin R. chose Tim to put a residential solar system on her house after collecting quotes from several companies. She found his pricing fair and valued how reliably he showed up and stayed reachable throughout the process — on-site when he promised and easy to contact between appointments. The installation produced a system she’s very happy with, and what sticks with her most is the combination of fair cost and Tim’s punctual, responsive approach during the whole project.
Choudhury teamed up with Tim from Green Solar to upgrade the solar panels on their home, a project that required multiple inspections and permits. After a previous install turned into a near-nightmare, they appreciated how Tim and his crew stayed involved at every step. The team guided them through the permitting and inspection hurdles, explaining in simple language what was being done and what to expect next. That hands-on clarity turned a complicated, stressful process into something manageable — the one detail that stood out was how consistently the crew walked them through each stage so there were no surprises.
Jessie booked a home solar installation and ended up with the panels installed and producing electricity in a single day. Tim and his well-organized team moved quickly, and the system cleared the city inspection on its first visit. When questions or concerns arose, Tim responded promptly, so she never felt left on her own. She keeps coming back to two concrete takeaways — a one-day install that worked immediately and a first-pass inspection — and those details are what made the experience stand out.
Brian H. found the team excellent to work with. He hired them for a solar installation and they managed the entire process, taking on the municipal permitting and coordination with Pacific Gas & Electric so he didn’t have to navigate that red tape. They handled the paperwork, scheduled the necessary steps, and made sure everything was “good to go,” leaving him with an installed system cleared by both the city and PGE without having to chase approvals himself.
Carl started a home addition in February 2023 and needed to lock in NEM 2 before an April deadline, even though the remodel wouldn’t finish until October. He found O’Sullivan Green Solar, a locally owned installer that balanced competitive pricing with high-performance hardware — the panels and microinverters carry 25-year warranties — and a level of service that felt above the usual. What set the experience apart was owner Tim’s flexibility: instead of insisting the roof and wiring be finished before design, he worked from the construction plans and coordinated with the contractor so the system could be specified and a contract signed in March to secure NEM 2. Tim also gave complete leeway on installation timing, since the actual work would be months later. Once the remodel wrapped and the family moved in, Tim finalized the permit application in November, walked the roof with Carl to settle a few layout details, and pulled the permit about a week later. His crew installed an 8.5 kW system in early December over roughly a day and a half. The clear takeaway: the owner’s willingness to design from plans and coordinate with the builder let Carl lock favorable interconnection,之后—
Long-term Satisfaction
Recent customers rate OSullivan Green Solar 4.9 ★
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.