Solar Vast reviews
• last updated FEB 26, 2026Loading map...
The Verdict
Solar Vast earns high marks for installation speed and initial service, but a pattern of abandoned customers raises serious concerns. We found multiple reports of systems failing within two to three years, then silence from the company when homeowners called for help. One reviewer paid $45,000 and later received a $5,488 utility bill after their system underperformed, called repeatedly for maintenance, and eventually got hung up on. Another watched their monthly output drop from 700 kWh to 50 kWh over two years, emailed for weeks, and was told to wait indefinitely for parts. The 52 positive mentions of workmanship and 90 compliments on sales conduct tell us installation day goes smoothly. But 11 negative signals for post-sale support and stories of roof leaks, exposed wiring, and unanswered service requests tell us what happens when something breaks. If you need repairs in year three, you may find yourself calling a lawyer instead of a technician.
If you're drawn to their competitive pricing on SunPower panels, get every warranty term in writing and confirm who services the system if Solar Vast stops responding. The installation may be fast, but the follow-through is a gamble.
Reviews That Shaped Our Verdict
Paul S. wanted a durable SunPower system and discovered Solar Vast listed as a SunPower Master Dealer; he worked with salesperson Vincent, who patiently answered all of his many questions. After comparing a good offer from a national discount warehouse with Solar Vast’s proposal, he chose Solar Vast because their solution not only matched the price but also felt technically superior — they specified micro-inverters on every panel instead of a single central inverter. Solar Vast handled the utility permissions and approvals on his behalf; those approvals took some time, but he expected that and found the company communicative throughout. The installers arrived professional and courteous, kept him informed about the schedule, and finished the job cleanly. At the end he received a packet with installation photos and component spec sheets, and he couldn’t find a single complaint about the process or the finished system.
Gloria H. paid about $45,000 for a home solar installation three years ago and expected lower bills and routine follow-up. After Edison sent a surprise $5,488 over‑usage charge, she had SunPower inspect the array; they found the system largely intact but possibly underperforming and told her to get the installer, Solar Vast, to perform maintenance. She reached out to Solar Vast, emailed her bill, and then heard nothing — several unanswered calls, and when someone finally picked up they hung up on her. During sales the crew had been courteous, but after payment they became distant and unresponsive. The salesperson had promised a $25 monthly payment; instead she ended up paying $65–85 a month and now faced the massive Edison bill that’s hurting her finances. No maintenance crew ever came in the three years since installation. Soon after the install, her handyman found an exposed electrical wire dangling under the sink next to the new panel — unwrapped and able to deliver a dangerous shock — which he had to secure himself. Friends who got free systems enjoy running AC; Gloria and her family have been tightly conserving energy yet still landed this hefty bill. The lasting image: after$
Rachel L. had an 18-panel Solarvast system installed on her home in 2016 and expected roughly 700–800 kWh per month. For the first two years output fell from that promise to about 300–400 kWh monthly, and then things got worse. She began calling the company; someone answered once and promised to check but never followed up. This January she was hit with a $1,000 Edison bill on top of the usual $50–70 monthly charges. When she reviewed recent utility statements she discovered the array had been producing only about 30–50 kWh per month for several months. Calls went unanswered, so she emailed her original contacts, Leo and Janice. Janice eventually wrote back, first promising a technician inspection, then saying the project team had reached out to SunPower and was awaiting a response. After more prodding Janice said required materials would take roughly a month to arrive, and only after that could a technician schedule a site visit. Nearly a month after that exchange nothing had changed; the company later invoked the stay‑at‑home orders as an additional reason for the delay. Solarvast still advertises a 20‑year production guarantee and big annual savings, but Rachel ended up with a 1
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 79
No Red Flags
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.
Licensed Contractor
A valid contractor license is on record.
What You Can Expect
Stephen C. chose Solar Vast because they could supply authentic SunPower Maxeon panels and take on a roof replacement as part of the install — the kind of full-service package he wanted. He liked that Solar Vast is a SunPower master dealer and that Ken Lau, the sales rep, was responsive and walked him through the process early on. The project moved in stages: about 4–5 months after signing the contract the crew redid the roof and installed the panels, but a few hiccups cropped up during that phase and Cindy stepped in to help sort them out. Grid connection delays with SCE pushed activation out another 6–8 months, so the system didn’t finally go live until last October — roughly one year after he signed. Since then the Maxeon array has been performing well, and what stuck with him was getting top-tier SunPower panels plus a roof redo, even if it took a year to get everything online.
Gloria H. paid about $45,000 for a home solar installation three years ago and expected lower bills and routine follow-up. After Edison sent a surprise $5,488 over‑usage charge, she had SunPower inspect the array; they found the system largely intact but possibly underperforming and told her to get the installer, Solar Vast, to perform maintenance. She reached out to Solar Vast, emailed her bill, and then heard nothing — several unanswered calls, and when someone finally picked up they hung up on her. During sales the crew had been courteous, but after payment they became distant and unresponsive. The salesperson had promised a $25 monthly payment; instead she ended up paying $65–85 a month and now faced the massive Edison bill that’s hurting her finances. No maintenance crew ever came in the three years since installation. Soon after the install, her handyman found an exposed electrical wire dangling under the sink next to the new panel — unwrapped and able to deliver a dangerous shock — which he had to secure himself. Friends who got free systems enjoy running AC; Gloria and her family have been tightly conserving energy yet still landed this hefty bill. The lasting image: after$
Two years ago, Binh chose SunPower to put a rooftop solar system on their home while managing the extra electricity needs of two EVs. They worked with Willie, who guided the purchase and installation and then kept the relationship alive—checking in every year and providing a system report to confirm the panels were performing. The ongoing attention delivered measurable results: with both EVs to charge, the household now runs at net zero most months and often sees a small credit on the bill. They plan to have Willie handle the next installation for their new house; what stood out was not just the equipment but the yearly performance reports and a single, reliable point of contact that kept the system on track.