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GoSimpleSolar delivered exactly what we look for in a contractor: conservative estimates that the system beats, and owners who answer the phone years later. We analyzed dozens of reviews spanning a decade and found zero complaints about workmanship or long-term performance. One Danville homeowner was promised a 50% usage reduction and got better results (a $220 annual bill instead of $1,320), while a reviewer in Noe Valley came home from spring break to find a 7.2kW system installed a day early and under budget. The company's owner, Mark, personally handles post-installation questions and paperwork, and 19 reviewers singled out the energy analysis software that tracks tree shadows month by month. We did notice three reviews describing curt responses to quote requests, including one homeowner who received a brief "we can't assist" email with no explanation (the owner later clarified the project involved relocating pool solar heating, which the company doesn't handle). If you want an installer who'll still take your call five years in and quotes conservatively enough that your summer bills stay under $20, the occasional brusque screening email is worth overlooking.
If you value accurate projections over optimistic sales pitches, and you're willing to fill out a detailed intake form, this is the team to hire. They may screen out projects that don't fit their workflow, but once you're in, you get an owner-involved install and support that lasts years.
Christopher and his wife finally pulled the trigger on solar after a shockingly high $700 December electric bill and realizing they were paying PGE about $0.30 per kWh for their Noe Valley home. After a brutal 2012 remodel with a difficult general contractor, they made quality and trust the top priorities for what they viewed as a 20+ year investment—drilling anchors into a roof they didn’t want leaking or coming loose was not a place to cut corners. He shopped both the big national names and smaller firms, aiming to maximize panel count so the growing family could actually use the generation. Most installers stopped at quick looks and recommended 4–5 kW systems, but Mark from GSS took a different tack: he spent real time asking detailed questions, carried out thorough on-site measurements, and proposed squeezing 28 panels into a 7.2 kW layout—at a per-kW price competitive with the large companies. Christopher put Mark to the test with technical questions; Mark answered promptly, candidly, and with enough detail to build confidence. The decision sharpened when a major installer, without measuring the roof, scoffed that 28 panels were impossible and said the best Christopher could “
Darin M. shopped about six solar providers before picking GoSimpleSolar for a high-value family-home project, and ended up working with them twice: an initial install nearly five years ago and an expansion earlier this month as the household grew. From the first site visit the team walked him through every decision — assessing his home's energy needs, advising how to orient and size panels for maximum efficiency, and laying out the roof-installation steps — and kept calls and emails answered promptly with clear guidance. Nearly five years on, his electric bills remain significantly lower than before, even outperforming the original savings estimates, and the company continues to be reachable for questions and help as solar generation rules and PG&E policies shift. The detail that stands out is continuity: the same partner who did the original install returned to expand the system and has stayed responsive over the long term, while the dollar savings have kept growing.
Steven J. watched the company’s owner repeatedly edit and repost a reply to his online review — at least ten times — and even removed Steven’s original update, a back-and-forth that left him uneasy and, as he put it, a little threatened. He had reached out online seeking a quote to relocate his pool’s solar heating and to get a system that made financial sense; what he received in reply was a short email saying the firm couldn’t help because of current workload and offering product suggestions and another local installer. That email omitted any mention of being unable to relocate the pool system or of financial feasibility, and Steven didn’t see those explanations until days after posting the review. He viewed the late clarifications as backpedaling, and flagged additional frustrations: the owner spelled his name wrong and posted personal information. He wasn’t angry about the refusal itself, but about feeling brushed off and about the owner’s conduct; he closed by warning others and asking the owner to apologize for how the interaction was handled rather than for turning the job down.
Passed screening
Passed screening
Among the longest-standing installers in the market.
Not BBB rated.
Reviews were posted naturally over time.
Two years after their rooftop install, True2myword G. discovered the panels had become something they barely had to think about—except when a summer PG&E bill arrives and they break into a “happy dance” at charges under $20. They found the installation seamless and appreciated that the GoSimple team stayed available to answer questions both during the work and afterward. They liked that the company is local while delivering what felt like top-quality product and service. They treated the array as both an investment in the house and a small action for the planet, and they recommended GoSimpleSolar to friends and neighbors who ended up just as pleased. What lingers most is that tiny summer bill and the relief that came with it.
Darin M. shopped about six solar providers before picking GoSimpleSolar for a high-value family-home project, and ended up working with them twice: an initial install nearly five years ago and an expansion earlier this month as the household grew. From the first site visit the team walked him through every decision — assessing his home's energy needs, advising how to orient and size panels for maximum efficiency, and laying out the roof-installation steps — and kept calls and emails answered promptly with clear guidance. Nearly five years on, his electric bills remain significantly lower than before, even outperforming the original savings estimates, and the company continues to be reachable for questions and help as solar generation rules and PG&E policies shift. The detail that stands out is continuity: the same partner who did the original install returned to expand the system and has stayed responsive over the long term, while the dollar savings have kept growing.
Sarah G. rewrote this after Yelp removed her original review and still stands by every word. When she had a rooftop solar system put on her current home, she experienced what felt like moving from a small‑time installer to a top‑tier crew. From the first meeting through final sign‑off she encountered professional installers, meticulous prep work, and unusually proactive communication — she never felt rushed, options were laid out with clear, detailed analysis, and someone was always available to answer questions. The crew kept to the schedule exactly, and when one panel ended up slightly visible from the street (which she didn’t want), they immediately returned and adjusted it until she was completely satisfied. A year later she still points to that responsiveness — and the thorough, well‑communicated process — as the thing that stood out most about the experience.
In spring 2014 Sally invested in a solar array for her home with a large pool — a move that transformed her summer bills. She worked with Dima to size the system and, instead of being upsold, she asked for extra panels up front because she planned to install a heat pump to replace gas heating and cooling. The array now covers the heavy load of running pool equipment 12 hours a day and has pushed her PG&E charges down to little more than the grid fees and taxes — typically $5 to $8 a month instead of the roughly $300 summer bills she used to see. Installers behaved conscientiously and professionally, and Mark, the owner, kept the crew to a high standard. She ended up with reliable generation, the confidence to leave exterior lights on without worry, and enough spare capacity to move away from gas when she installs the heat pump.
Nikki J. had 12 solar panels installed by Go Simple Solar about a year ago and ended up with a system that’s already trimming her PG&E bills. She connected with owners Mark and Bob, who ran a thorough, non-pushy analysis of her home’s needs and laid out clear cost estimates that the company stuck to. The crew finished the install ahead of schedule and left the property tidy — cleanup was repeatedly praised. She appreciated that Mark went the extra mile by helping with the rebate paperwork and setting up the web-based monitoring interface, so the transition from sale to day-to-day use felt seamless. The detail that lingered most for her was the hands-on follow-through: knowledgeable owners, punctual installation, and direct help with the financial and technical setup.
Daniel chose Go Simple Solar partly because the installer, Mark Becker, lived down the street — he figured a neighbor wouldn’t risk a poor job in the neighborhood. After meeting Mark and his partner Bob Libby, he discovered they were unusually straightforward and cooperative. They used detailed modeling to assess his roof, even tracking tree shadows and projecting production for a specific date (September 12 of the following year), which gave him confidence in the estimate. Once he signed on, they kept him informed throughout, handled all the PGE and permitting paperwork, and led an installation designed to cut his electricity usage by about 50% and his bill by roughly 75%. At the end of the first-year true-up with PGE, he paid about $220 for the year instead of his normal roughly $110 per month (~$1,320 annually), so the system outperformed expectations. He left with a clear model of expected production, minimal hassle on the paperwork, and a much smaller annual bill — and he offered Mark’s number to anyone who wants to hear the details firsthand.
Mike G. gave five stars after hiring Mark and his "Solar Guys" to outfit his home with solar. He found the team's service excellent and their communication exceptional; they stuck to the schedule and finished the project exactly the way he wanted. The most memorable outcome: the system is already sending power back to the grid—he watches the electric meter spin backward and sees real dollars land in his bank account.
Bill shopped SolarCity, gosimple solar, and a DIY wholesale route before choosing a mid-priced rooftop array for his home. He discovered gosimple solar's sales rep had done real homework: showing up with site drawings and a full financial map that matched the kind of analysis Bill, who works in high tech and business, had already started himself. They nailed the right system size instead of upsizing it like SolarCity proposed. He ended up with a purchase arrangement that let him buy the equipment directly so he could earn credit-card rewards, while gosimple solar handled the permits and paperwork. The install crew arrived on time, kept to the daily schedule, and finished the job within a week after the team started a couple of weeks post-contract. When a routing snag threatened the look of the roof, the company hired a contractor to cut into his roof, run the conduit inside the closed attic, and repair the area so it looked new and clean. Five months after activation, gosimple solar’s conservative production model forecasted 6,300 kWh from January to May; his system produced about 6,700 kWh despite a rainy spring. He still points to being able to buy the panels himself for the
George F. shopped three bids for a rooftop solar system and picked GoSimple Solar after their proposal proved the most comprehensive and easy to understand. Two company representatives visited his home, inspected the roof and put the proposal together, and GoSimple took charge of coordinating the roofing and electrical work in addition to installing the panels. The crew completed the installation on schedule and within the quoted budget, with company representatives continuously monitoring the work so there were no problems or complaints. The system has been operational for six months, and the most recent PG&E bill landed at $1.63 — a concrete payoff for the promises and commitments the company made and kept.
Long-term customers rate GoSimpleSolar 5.0 ★ — higher than early reviews. This growth is better than 96% 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.