Solar Power Installers Cupertino - Cupertino, California

Daniel L. N. (.

I had a fantastic experience with Sameer and his team. I was comparing prices for solar companies before the NEM 2.0 deadline, and SunVault was very competitive on price. In June 2023, SunVault completed installation of a 11.2kW system consisting of 28 x 400W Q.Peak panels and Enphase IQ8+ inverters. They also include the Enphase consumption monitors (allowing you to see how much power your house is using) as part of their quote — some installers charge extra for this. As someone new to solar, they did a great job explaining everything and walking me through the process. The system easily passed city inspection.

The left side of my roof faces south-east and has a lot of protrusions from plumbing vents, a sun tunnel, and a vent from the hot water system. Two other companies told me they couldn't install panels in this section at all due to the spacing of all the protrusions. SunVault managed to do it and it turned out great. They ran the conduit on the roof rather than in the attic, which is fine for me since my house is two-story and you don't actually see any of the panels from the ground.

I had an issue with incorrect consumption data in Enphase's system. SunVault went above and beyond to contact Enphase about it, escalate it to higher ups at the company (when the low-level techs said they couldn't see any issues), and kept contacting them for status updates until the issue was resolved. I really appreciate the amount of effort SunVault put in to ensure my system was operating properly. Enphase's hardware is great but their support is pretty bad.

If you're looking for a solar installer that really cares about their work, I'd definitely recommend SunVault.

Scott W.

DO NOT USE THIS COMPANY!!! After they completed the roof we had another roofing expert examine it and he said it was one of the worst jobs they had ever seen. It was so bad, there were too many issues to fix so we are having another company completely redo the roof. Sunvault is refusing to respond now and we are initiating legal proceedings to hold them accountable for the horrible work they completed.

Longer version:

We needed to redo the roof on our house and replace an older solar system. We looked at several options and landed on Sunvault due to their good Yelp reviews and their price to complete both of these jobs came in a bit lower than others. Initially communication with Sameer (the owner) was good.

They started with the roof tear off and put down some underlayment paper. There was rain coming that night so I confirmed with Sameer that everything was watertight. As the rain started, we had multiple gallons of water pouring through the ceiling of one room and large leaks in two other rooms. The next morning I went up on the roof and discovered a whole flat section of the roof was totally uncovered. We found out later just the underlayment they had on the roof is insufficient for waterproofing while the job is in progress.

Sameer promised this was a totally isolated incident and not an indication of the quality of work. He promised “changes would be made” but the exact same crew continued working on the roof. Since more rain was coming we didn’t have an option to switch to another roofer so we let the continue which turned out to be a major mistake. Sameer took responsibility for repairing the damage inside of the house caused by the leaks. It took close to a week for them to complete the demo. We had a mold test done and it came back positive for dangerous mold due to the slowness of removing the wet plaster and drywall. Sameer found a drywall crew to repair the drywall which took close to a month and was very disruptive to our living environment. All of this was totally avoidable with some simple waterproofing. Against our better judgement we had them complete the roofing job despite this.

A few months later I had a roofing expert come inspect the roof. He was absolutely shocked at the quality of the job, calling it as bad of a job as he had ever seen. He was shocked it was done by professional roofers and looked more like handymen just winging it. He said “roofing isn’t that complicated but they somehow did almost everything wrong”. He listed a litany of errors that were perversive to the whole job. For example, there were flashings around the skylights that were not even attached. There were so many problems that going in and fixing them would take about as much work as just replacing the roof. There also may be other problems that were not visible that would someday cause a leak. The only way to have peace of mind would be to replace the whole roof so this is what we will be doing.

I contacted Sameer with all of this asking them to take responsibility for this terrible work. He has refused to respond to repeated emails and texts. We have been left with no choice but to initiate legal proceeding to try to recover some of these costs.

I learned during this process that Sunvault is just a side hustle for Sameer. He has a full time job at Meta working in finance. He is not a roofing expert and has learned solar on the side. It’s clear he just hires cheap labor to complete the job with no supervision and he lacks the knowledge to even recognize how bad the roofing work is.

I urge you to learn from my awful experience and stay far away from Sunvault.

Atiq A.

I started looking for solar quotes in June 2021. I came across Solar SunVault on Yelp and reached out to them

I connected with Sameer who explained the whole process, savings and options considering our future electricity usage and expansion plans.

After comparing the quote with top 5 Solar companies, SunVault should out in terms of price, quality of solar panels and timelines.

Few key high-lights:
1. Most installers were taking 3-6 months lead time while SunVault got the work done in 2-3 weeks
2. Everything was seamless and online
They also helped me shop for new roofer as our roof had to be replaced - They found the best roofer in town for way less price than what I would end-up paying
3. They comply with all the city permits which helps in getting the permit within 1 week (usually it takes 1-3 weeks)
4. Highly efficient team, got my entire Roof+Solar in 1 week.
5. We installed 9KW solar, and it typically takes about 2-3 days but Sun Vault did a fine job in getting it done in 1 day.
6. Sun Vault treats every customer with care, their main folks (Sameer and Jitendra) were present during the entire show.
7. 100% hassle free solar installation with roof