Solar Harmonics was honest from start to finish. From the start the estimate for our home was…read moreclearly laid out no surprises just honest feedback and expectations! Once the work began again nothing but good communication and follow through. Service was delivered as promised we are so happy with the results. Highly recommend Jamie Duran and his entire team :)

A Team That Actually Cares About Their Work…read more From the start, Solar Harmonics stood out because they treated me like a person, not just another lead. Jamie and his team were responsive, clear about costs, and never pushed anything unnecessary. The installation crew showed up on time, worked cleanly, and left my property spotless. They installed 19 panels with Tesla Powerwall 3s at my home in Antioch, and everything has been running perfectly since day one. The panels look great, the Powerwalls perform flawlessly, and the app setup was smooth. It is rare to find a company this transparent and easy to work with in the solar world, but these guys nailed it. I highly recommend them. Gordon & Jana

Just had 30 panels and 2 batteries installed after working with Kevin. They had excellent customer…read moreservice and great communication through the whole process. Kevin is very sincere and gives his honest opinions. Multiple times I spent 30+ minutes on phone with Kevin asking him questions. Even after the project was complete and installed, Kevin continues to reach out to me when I have questions. I would 100% recommend this company to anyone looking for solar. Their new programs help to bring costs down now that the residential tax breaks are gone. Thank you West coast solar for saving me from PGEs prices!

I've had this system for about a year now and recently submitted a service request. It's been…read morenearly three weeks, and I've received no meaningful response--only automated messages. Calling customer service has been equally frustrating, as no one answers, and it's difficult to even find a direct email contact online. At this point, I'm simply asking for someone to return my calls or emails and provide an update on my service request. Unfortunately, this lack of communication reflects the same challenges I experienced during the installation process. I would appreciate a prompt response and resolution.

United Solar installed a 22 Panel, & 20,000 Kw Battery system to my home, that went live last…read moreNovember 2025. They were very professional, knowledgeable, and the staff who installed this system very technically competent! I believe I paid a competitive price. The performance of the system has been consistently very impressive. I have definitely seen the difference in my PG&E bill! I would not hesitate to recommend them to others.

My wife and I had a very concerning experience with United Solar Electric regarding their business…read moreethics and refund policies. We were interested in solar for our 1940s home and provided a deposit in good faith. However, after further inspection of our roof and the overall project viability, we decided not to move forward. When we requested our deposit back--before any equipment was ordered or installation began--the company initially refused, claiming it was 'passed' the point of a refund. It was a high-pressure situation where we felt they were trying to lock us into a contract we weren't comfortable with. While we did eventually receive our deposit back after pushing the issue, the initial refusal to return funds for work not performed was a major red flag. Homeowners should be very careful with the fine print here. If you are looking for a company that values transparency and customer comfort over just 'closing the deal,' I would suggest looking elsewhere. We're glad we didn't get stuck with them and are instead putting that money into improvements that actually fit our home.

I can't say enough good things about Carlos Gomez from Sunlight Electri-Cal Solutions…read more I've been working on a non-standard solar setup using an EcoFlow Delta Pro Ultra X and EcoFlow Smart Home Panel 3, and finding a contractor who truly understood this type of system was incredibly difficult. I spoke with many contractors, and almost all of them sent salespeople who gave generic answers or tried to push cookie-cutter solutions that clearly didn't fit my setup. Carlos was completely different. From the moment he arrived, it was clear he wasn't a salesperson -- he's an engineer, and it shows. He took the time to deeply understand my system, reviewed actual spec sheets on the spot, and immediately identified issues that other contractors completely missed. Multiple companies told me Hyundai panels would work fine. Carlos checked the amperage limits, applied proper safety margin calculations, and clearly explained why those panels would not work with my EcoFlow system -- saving me from a costly mistake. He also walked me through: Proper panel selection within voltage and amperage limits Safe string configurations and series wiring How to maximize roof space while staying within code Permitting requirements I hadn't been told about before On top of that, Carlos identified critical code and safety requirements that no one else mentioned: Bollards required in the garage to protect battery units Correct battery placement to maintain required clearance from doors and entrances Heat detector requirements for battery installations in a garage These are all things that would have caused inspection failures later -- and Carlos caught them immediately. He spent well over an hour with me, climbed onto my roof to check for obstructions, inspected battery placement, reviewed wiring paths, and answered every question in detail without ever rushing me. What truly sealed the deal was how efficient and transparent the pricing process was. Carlos was able to turn around a detailed quote very quickly, and when I received it, I was honestly surprised -- it was a significant amount lower than every other quote I received, even though his evaluation was by far the most thorough. Given everything: His technical expertise The level of detail and care The ability to integrate with my existing system The fast turnaround And the much better pricing Choosing Sunlight Electri-Cal Solutions was a complete no-brainer. Carlos is knowledgeable, meticulous, honest, and genuinely passionate about doing things the right way. After meeting him, I completely understand why this company has such strong Yelp reviews. If you're in the Bay Area and need electrical or solar work done the right way, especially for a non-standard or custom system, I highly recommend Carlos and the team at Sunlight Electri-Cal Solutions.

I actually first contacted Sunlight Electri-Cal very early on this year, in April. I had closed on…read morea new home but knew we would want to get solar installed. Juan was very responsive and came out to take a look at our home right away. What I loved about Juan and his team is they are NOT sales people, they're real engineers who are focused on solving your problems and meeting your needs. Juan and his team are true solar experts and know exactly what they are doing - they were great at walking me through key details I should know about the system, how to best take advantage of having a solar system, and did their best to get me scheduled (in spite of multiple difficulties) for installation before the end of the year. Just for context, I've talked to another solar company where clearly they were just about trying to close the deal and sell sell sell, which really turned me off - it felt like they just wanted our money as opposed to wanting to understand what we really needed. Juan's team really shined here by just showing up to be real experts who are thoughtful about what system you need, as opposed to trying to close a deal. Juan and his team were also really patient and flexible. Our new home's solar system had to be turned on before we could start any work, and that process took months due to Sunnova going bankrupt. And, they were also really thoughtful when we mentioned we had added in some upgrades that would affect electricity use (ie saunas and outdoor electric heaters), and they reassessed their initial project and updated it to accommodate that. I thoroughly enjoyed working with them and am really grateful that we got our project done so well!!

Problems from installation...on. No communication. Company took many months to complete…read moreinstallation after re-scheduling several times. I was promised to be put on the installation calendar month after month. Employee was rude to my mother. Our system went offline because they didn't install something correctly. We were not informed and received a huge bill. Del Sol did re-imburse us for 1 month's bill. Was promised by the owner he would look at our system for issues, then didn't show up as scheduled. I recently had a leak in my pool solar system. I called the office to schedule a service call. Once again, I was told someone would return the call and get me on the calendar. It's been 7 weeks and no return call. Go figure! I would NOT recommend!

Our Story: We got our panels installed in Nov 2022. We got…read morequotes from two other companies and looked online to a solar energy brokerage for more quotes. We got a recommendation for Del Sol from one of our friends that was happy with their process and service. We reached out to Elvin and he was able to send us over a proposal very quickly based on whatever tool they used to see our roof. He provided two options for our roof, a 19 panel configuration and a 21 panel configuration. We decided to go with the 21 panel configuration for our roof and it estimated putting us at 98% of total output. After looking at the cost of the system, we didn't think we would be able to get it for a couple of years, but Del Sol offers multiple financing options. We decided to use the local credit union for financing. After we decided on the configuration and got the financing locked down, the turnaround time was approximately three weeks. Which was a whole lot faster than we would have anticipated. Installation took a total of two days with the city inspector coming out the second day. After the installation, paperwork has to be submitted to PG&E to be turned on, which took about 10 more days. Bird proofing for our panels was part of the package and it was done a few days after the final install. Our Conclusion: So we've had our panels for about four months and are extremely happy with them. The process went extremely fast. Supporting local reputable companies are very important to the wife and I, for us it definitely felt like the process was very streamlined to the point of being overwhelming. Using reputable local companies for our home improvements has definitely paid off in spades. Del Sol already installed panels in our neighborhood and knew exactly what our HOA required. The permits were pulled in a timely manner, and inspection was scheduled and concluded on the final day of the install. The major hiccup we had was we wanted to get our roof. Inspected prior to the install. The installation team was very professional, and courteous to us during the install and checked in with us every day with what to expect for that day. The final solar manual was delivered by Elvin and he went over everything in it, which also included the app used to track the performance of your system. Everything was laid out and explained as far as all the warranty information and what to do when the county sent you that "home-improvement" letter. I shared our whole story for people that are just looking into getting solar and wanted to know what they might expect. If you're a Brentwood local, and you decide to go with Del Sol, you won't be disappointed. The quote was very comparable to all the others we received. Elvin's service and knowledge was outstanding and the installers were professional and efficient. Also being able to use a local credit Union for financing was an additional plus for us. Yes, I would recommend them for your solar system needs.

Just had the guys install solar & battery. No fuss, no bs. They explained what's what and got the…read morejob done. Didn't try selling me stuff I didn't need. Will use them again if I ever move

Super fast and easy to work with. I felt like it was worth the investment. Good value and service…read morefor your money! These guys know what they are doing and get right to it. Highly recommend for your solar needs!

Synergy owner Eric Piekarczyk recently demonstrated proactive ethics that are hard to find. The…read morecompany failed to assist in diagnosing a component known as a Gateway in my pv system. Which resulted in prolonged failed solar generation. Eric, rather than blaming the problem on anything or on me offered 2 extra panels in compensation. This says that the company like all of us is imperfect and that the owner has a high ethical bar. In a time when our country is being governed corruptly something like Eric's behavior shines. That's my Synergy story. Richard Kamp

I highly recommend Synergy Power for residential solar system installation. Dave, the salesperson,…read morecame to our house and made valuable recommendations for best suitable system to install. He also gave us a price breakdown and how much could be saved over the years running the system. The installation was completed in half a day with an efficient crew to install the panels, battery and inverter. The whole system was up and running in minutes after installation. At the end, Phil would appear at our house and get things ready the date the city inspector came for full inspection. Everything went very smoothly and all papers were properly signed off. I just enjoyed working with this company and they are professional, knowledgeable and nice to communicate with from beginning to end. Again, I highly recommend Synergy Power for your solar project.

Navigating all the different Solar companies and options can be daunting but Tim's team at HomePro…read moreSolutions took their time to answer all of our questions and was not pushy with the sales aspect of the deal at all. Not only did we get a great deal on our system but everything was extremely smooth from start to finish. The installers were on-time and professional. Additionally, Tim's team followed up after installation several times, unprompted by us, just to check-in and make sure we were happy and the system was meeting our expectations. I have recommended HomePro Solutions to a few friends and neighbors and they had a similar positive experience with their installation.

Ended up a non starter 10 mins after quote request they…read morecalled , good After getting address and email exchanged they asked my credit score. We have not discussed the project at all, when asked why they need the credits score first, downplayed and the hung up Not sure what to make of these priorities

I've used them for multiple projects including an EV charger install, whole house surge protector,…read moreand electrical install on a sauna. It's always been good work and communication.

I contracted with Got Watts in April 2025 for roof installation of 18 panels and 15 kwh of back-up…read morestorage. While their price was actually the highest of the 3 company bids received, the difference was marginal and the communication/information/responsiveness by Got Watts was far better. Day to day as the project proceeded, there were problems and we'd solve them. No project of this scale will proceed without a few hiccups. In retrospect I think it went very smoothly. I found 100% of the personnel to be professional, dedicated, knowledgeable, and cheerful. They did everything they said they would, at the price agreed-on, and I'm very pleased with the result. I'm glad I went with Got Watts.

My wife and I had spoken with a few other companies and Synergy 768 leaned better into what we were…read morelooking for. Ed gave us more advice and he was very upfront with all the costs and everything else. He's very honest and professional from the very beginning. So, we had no problem saying yes to Synergy 768 as far as putting the solar on our home. From the solar panels to the permits Ed Cotas and his team did all the work. All we did is pick a system that is designed and will work best on our electricity needs and sign documents. In less than two months our solar panels are up and running. Thank you so much! kudos to all of you at Synergy 768, Inc. and Sunpower! Dante Oakley

Purchased a $51,800 system only to find out a year later that my system was severely undersized…read morehaving to pay PG&E over $1000 at the True Up year end cost. When confronting the owner, Ed Cotas, about being undersized, he placed the blame on us! Now that SunPower filed bankruptcy Snergy768 hasn't offered any assistance at all. Been trying to get any sort of help since last year Nov, but no help at all. Be aware, AWFUL customer service.