SolarUnion - San Francisco, California

Marco Gonzalez-Navarro

SolarUnion installed a 6 KWh system with battery backup in East Bay for us under NEM 3.0. The whole process took about 6 months. They took care of designing system, getting permits with city, working with PGE, and getting everything connected. The installers were excellent and also installed the EV charger and changed the house main panel to upgrade electrical service to 200 AMP. They respected the contract terms and I expect them to be around for the 10 year battery warranty and 25 year solar panel warranty in case anything fails. I have been very happy with the system and power consumption from the grid is at 10% of previous levels and I never pay high TOU rates at night anymore. Also, we just had our most recent PGE power shutoff a few das ago and the backup system worked flawlessly. The whole house kept on working after a few seconds delay and we went on about our day.

Michael Wu PhD

After many interview and getting so many quotes from many vendors, my wife and I decide to go with SolarUnion to embark on our solar power journey. And it was definitely the right choice. We didn't know anything about Solar power or solar energy. But we learn so much along with SolarUnion.

Everything was done professionally and timely. From the beginning, where they did the drone survey, the proposal and contracting, and iterating with us on the design and, and finally the installation and inspection, everything is nothing less than perfect.

The thing we value most is their responsiveness. They always get back to us whenever we any question for them. The workmanship of the installer was superb. Not only do they work well, they also look very good. It's almost like a piece of well designed work of art. I must say that I highly recommend SolarUnion for anyone who is embarking on their Solar Power Journey.

Brian Cibula

Update - I am still waiting for a transformer upgrade and we're at over a year and a half since the install, and PG&E is saying it won't be until April 2025, nearly 2 years since I first started this project.
SolarUnion also came out after I had to figure out there is a way to potentially use the SolarEdge inverter to limit the amount of power going out to the grid (supposedly this is supposed to work). Goes to show they don't even know how their systems work. That was September 2024, and I still have not seen any sort of reduction in my solar bill, so that's probably not even working now. Who know's if the system even works that they installed. Stay away from these people.

Verne Smith

While the sales and install process was straightforward, after-sales service is *extremely* disappointing.

We have had our system for approximately 2 years and recently it shut down after detecting a ground fault. When contacted for help, SolarUnion insisted on advance payment of $1,000 for a service call to be scheduled, and refused to consider whether the fault could be due to workmanship and therefore covered under warranty.

I had to chase them to schedule after payment and received an appointment almost 3 weeks later. Now, after waiting at home for service techs to arrive, I'm advised that the appointment was postponed for another week (the communication I received implied it was just a different time during the same day).

Every day of delay is costing us money in addition to the cost of the service visit we had already had to front. I'm very disappointed in Solar Union's follow-up and professionalism.

Randy Pon

Solar Union was great to work with. I had a complicated install job, Roof was being replaced, I wanted the roofers to waterproof the solar panel supports which required Solar Union to come out on the day my roofer was present and come back after the roof was completed to continue the installation. No problems at all. Recommended to friends and they got their system.

Abundant Life AG- Cupertino

Loved the way they respected the COVID threat. They wore masks and where very professional in the way they handled this tough situation.

After reviewing two other solar companies, I chose them based on their high Yelp rating and because every single person I talked was genuinely interested in me and in my project.

The equipment they installed is rated as the best on the Market and the components were engineered to give the best performance over the life of the Solar Panels. I can watch my solar production from an app. My solar production is also reported back to Solar Union for them to use in evaluating the production.

The warranty was also a great selling point. If you are shopping solar companies make sure you compare warranty info

We passed our county inspection with no issues to be resolved. That was a big relief.

Great company. Loved working with them.

Brandon Ripley

Solar Union did a good job on the overall new solar project on our house in San Francisco. I would definitely recommend. The panels have been operating flawlessly for almost a year now. They were a bit more expensive than other quotes but they are a large enough company with different businesses and I expect will be around to fulfill their 25 year warranty. They also recommended a roofer who was able to meet the timeline and provided a very competitive quote.

It took a few times back and forth of reviewing the plans and providing feedback because the engineers doing the layout couldn't initially figure out how to fit the panels in the planned space from the original quote. I ended up going up on the roof to collect more exact measurements, looking up the code myself to explain how what we originally planned will still meet code requirements, and providing a sketch. Additionally the drawing had a couple errors with the electrical panel and inverter at the wrong end of the house and incorrect, undersized inverter model. I would rather they had been able to get this right without my help but getting all the details right is really tricky and I would expect this of every solar installer.

After this was all squared away I didn't hear anything for a few weeks, which was expected since construction start was planned quite a few weeks away, then got an update, and nothing for 4 more weeks until a call saying they will arrive the next day to do the install! A little more advance notice would have been nice, but the date and time worked fine.

Installation went great, completed in about 2 days. The installers were really knowledgable. They followed the plan, called in to discuss changes that were missed in order to meet code and tweaked accordingly. I worked in residential construction for many years and I checked their work on wiring and waterproofing and it was all high quality work. The inspection was smooth - only concern was they used flex conduit in the basement for a long run instead of rigid, but the inspector let it pass.

From first phone call to getting PG&E permission to operate and enabling the inverter was a bit more than 6 months which was quite a bit longer than the 3-4 months quoted, but still reasonable.

Jack Osborn

Got a hold of Solar Union via Energy Sage (at the time a free non profit solar energy consultant for homeowners). Once we compared quotes from the two companies that Energy Sage provided, we chose Solar Union. We struck gold with Solar Union! We were assigned a consultant to help us with funding and through design and construction. He communicated with us every day through financing and helped us decide which of the two systems; DC or AC output, made sense to us. Answered a ton of newbie questions about pros/cons and kept everything straight while I hemmed and hawed about which to use. Then Solar Union designed the panel layout with our energy usage data and a satellite image of our roof. The design oriented the solar panels with an unobstructed view of the sky. We went through permitting seamlessly (albeit slowly) and the installation took less than a day! (5 - 400W panels). We now have a web based monitoring system via Enphase. We can monitor each panel's daily output. Couldn't have been easier, couldn't be higher quality. Panels mounted securely, conduit laid perfectly vertical and horizontal. Combiner box level. Great work! Entire process was about 6 months or so.