Green Stock Solar reviews
• last updated FEB 26, 2026Loading map...
The Verdict
Green Stock Solar does solid work at a fair price. We analyzed dozens of reviews and found a pattern: fast installs, careful roof work, and a no-pressure sales approach that educates instead of upsells. One homeowner had seven panels sitting dead for months after a competitor's botched wiring; David crawled into the attic, traced the faulty connections, and doubled the system's output in a single afternoon. Workmanship scores high because the crews pass city inspections without re-dos, and 19 reviewers mentioned professional planning that avoided surprises. The owner answers technical questions himself rather than routing you through a call center. One gap worth noting: a long-term customer reported unanswered calls when requesting panel removal for a roof replacement nine years after install. If you want an installer who'll sell you exactly the system you need (not the one with the highest margin) and who can troubleshoot weird voltage drops years down the road, the track record here is strong.
If you value technical depth over polished marketing, Green Stock is a safe bet. You won't get a slick sales pitch, but you will get an owner who can diagnose why your combiner box is reading the wrong voltage.
Reviews That Shaped Our Verdict
In 2014 Glenn contacted Greenstock Solar and met with David Peterson, who arrived on time and delivered a competitive bid that Glenn accepted. The installation finished successfully, and he enjoyed ten years of trouble-free solar power. When a roof replacement finally required the panels to be removed and reinstalled, Glenn reached out to David several times to coordinate timing and then found himself unable to reach anyone at the company—calls to the office, David’s mobile and emails all went unanswered. He left multiple messages with no reply, leaving him frustrated by a breakdown in post-installation support. The clearest takeaway he walked away with: excellent initial installation and a decade of reliable performance, but no dependable way to get the company’s help when servicing became necessary.
Michelle had Green Stock Solar put a system on her Vacaville ranch-style home about three years ago. When she needed a full roof replacement, the company came back, removed the panels and rails, and coordinated directly with the roofing crew so the job stayed seamless. After the roof was stripped, Andy stepped in to set new stanchions, the roofer installed proper flashing to satisfy the new-roof warranty, and then Andy and two coworkers returned once the shingles were down to reinstall the rails and panels and reconnect the array. They showed up on schedule and took care not to damage the new roof, and the system ended up back online and producing. She emphasizes one clear takeaway for buyers: confirm up front whether your installer will provide follow-up service and whether they have a succession plan, because a solar system can last 25 years and you don’t want it left without support if the original company stops servicing systems.
Robert B. moved to Napa last year and had Phoenix Solar install a solar-plus-battery system, only to watch that installer go bankrupt before final approval and leave him without ongoing support. The system used good equipment but underperformed, and when it stopped producing any solar power he discovered he couldn’t even register the inverters with Enphase because Phoenix had never recorded the serials. With no way to monitor production, he turned to Enphase’s installer list and called Greenstock — Dave, the owner, showed up the next day to troubleshoot. Dave climbed into the attic, lifted panels to read inverter serial numbers, and traced wiring that wasn’t obvious from the roof. He found that one of the two parallel inverter groups had been miswired, so seven panels had never been operational. While crawling through the combiner and attic, he uncovered miswired and loose connections, reworked and properly sealed every bad joint, and corrected the wiring mistakes on the same visit. Those repairs immediately paid off: Robert watched generated power jump by as much as 48%, and overall output nearly doubled compared with what he’d been getting. Dave also registered the system with
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 89
Clean Record
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 13 years
Among the longest-standing installers in the market.
BBB Rating
Not BBB rated.
Natural Review Patterns
Reviews were posted naturally over time.
Contractor License
License information could not be confirmed.
What You Can Expect
E chose Green Stock Solar in the summer of 2016 for a nine-panel rooftop system after a friend recommended David; David quoted the best price of the installers she interviewed. They found Jae handling pricing, contracts and external communications and keeping the process moving, and the crew completed a neat, professional install that the Fremont city inspector passed without issue. In early 2018 they decided to expand by five panels and installed the new modules themselves. David and Jae sold them the parts needed, sparing them high shipping charges, and afterward Janie updated the Enphase monitoring page to show the correct total panel count and configuration at no cost. What sticks about the experience is how the team kept helping well after the original job—supplying parts locally to avoid fees and fixing the monitoring records for free—leaving them with a cleanly installed, 14-panel system and accurate online monitoring.
Rich H. walked into the process after a previous, more expensive, and frustrating attempt with another company and discovered a very different experience with Green Stock. He spent time with a team that patiently explained options tailored to the size of his house and his actual electricity use, and never felt pushed into a sale. Everyone he dealt with stayed friendly and professional, and the company handled all the paperwork and permits that had been such a headache before. On top of that, the price beat what he'd been quoted elsewhere. The installed system performs as promised and covers his needs — what sticks with him most is being spared the permit and admin hassle while still getting a well-priced, fully functioning solar setup.
After years of wading through confusing options and dodging high‑pressure sales pitches, Nathan D. decided this year to finally commit to solar and gathered four competing quotes for his home. He met David from Green Stock and immediately found a different kind of approach — David beat the big-name firms on price, handled service details, and moved faster than the others. From signing the contract and paying the deposit to being interconnected with PGE took just six weeks; that timeline included an electrical panel upgrade that David arranged through his vendor. Nathan ended up with a working system quickly and a new neighbor and friend in Napa who helped make his solar setup straightforward — a combination of speed and hands-on coordination he expects to rely on for the next 25 years.