TL;DR: Rose is incredible. Honest, patient, actually knows solar and is not just a salesperson. She…read morewill answer every single question you may have and follows up. Has a professional installation crew and executes flawlessly and everything stays on track. Incredible follow-up and will not try to upsell you like other installers. If you're looking to install solar, you should absolutely go with OneSun. Give Rose a call to at least get a consultation and I'm sure your interaction will immediately stand out from other installers. Installing solar is something I kept putting off. When I found out that the tax credit would be going away at the end of 2025, I realized I couldn't put it off any longer. One of the reasons I kept waiting was how annoying solar reps were. Clearly just sales guys who didn't actually know anything about the equipment, technology, and process. I did a bit of research on local installers and OneSun came up a few times, all with nothing but great things to say and especially highlighted the installer's knowledge and patience. Before reaching out to OneSun, I informed myself as much as I could to the point that I knew what panels I wanted, size system, even what inverters I wanted installed. My first phone call with Rose immediately proved that all of the positive feedback I had read was for a reason. She took the time to actually listen to the specifics of my project, what I was looking for, and what questions I still had based on my research. She took the time to answer every question and even went into the technical details that I was interested in. It was clear that she was extremely familiar with not just the logistics, but also exactly how a solar system works as well as the technical details of all of the components in a system. She had my business after that first meeting but of course I still did my due diligence and got a quote from one other local installer which also had similar reviews. Although the sales rep was very nice, it was clear that he was just a sales rep and only reinforced why OneSun was the installer to go with. OneSun's pricing happened to be better but even if the other installer would have come in at a cheaper quote, I would have still chosen OneSun for the install. Rose started the permit process in July and made sure that everything stayed on track, especially since I wanted to make sure that the system be on before the end of the year in order to qualify for the tax credit. The timelines she provided were right on point and the install was scheduled for September. About a week before the install date, there was an unexpected problem. The panels that were originally planned for my install had gone completely out of stock. There had been some kind of manufacturing issue and those panel would not be coming back in stock for another couple of months which could push the project out to the following year. Rose let me know she could acquire slightly larger panels for the project and install it on schedule. I was about to ask what the additional cost for the larger panels would be, but before I was able to, she let me know that there would be no additional cost to me. I'm sure any other installer would have used the situation as leverage to add additional cost to the project. A testament to Rose's commitment to her customers. On installation day, the crew was professional and efficient. They completed everything in one day and made sure to keep everything as clean and organized as possible. Towards the end of the install, I had noticed that they ran one of the grounding wires out from the attic and down the face of the house where I had planned on completing another project in the near future. I knew that the wire would need to be redirected if it was left there so I asked the foreman if he could run it through a different path. Initially he felt like it would not be possible given the layout. I reached out to Rose just to make sure and see if she possibly had another solution. About 10 minutes later the foreman showed me another possible option which was much better for what I needed. It may have seemed like a small thing, but that was another instance in which I believe any other installer would have dismissed my request as pickiness and told me there was nothing else they could do. Rose took the time to speak with her foreman and truly assessed the situation to come up with a solution that fit my needs. It took LADWP about 6 weeks to get my meter installed and for my system to be turned on, but it was still well before the end of the year (and yes, I just got my tax refund with that hefty solar tax credit). It's rare to come across someone like Rose who is honest, patient, and who truly has her customer's best interest at heart. Combine that with impeccable execution and communication, and there is no one else I would recommend for a solar install project. In fact, my parents are considering a small project and I've already told them about Rose/OneSun.

When I first contemplated getting solar panels for our house, the entire process looked daunting. I…read moredidn't know anything about the technology or equipment and I felt ill prepared to make any decisions about what our house needed. There are so many companies out there, it's hard to know who to trust. As soon as I did a few online searches, I was flooded with emails and texts from multiple companies with high pressure sales pitches. One company charged me $350 to do a site survey, just to get a quote for the project, then came back with a revised quote adding $7000 to dig a trench for electrical wiring due to "the location" of our electrical panel. I found OneSun on a yelp search and as soon as I spoke with Rose Avakian, I knew my search was over. This company stands out from the others. There was no sales pitch, pressure, or upsell. Rose explained the technology and equipment in a way that made it understandable and approachable. When her team came to look at our place, they found no need to dig a trench and simply connected to our existing electrical panel. Had they needed to dig a trench, the price they quoted was nowhere near $7000.  From start to finish, the entire experience was transparent, seamless, professional and expedient. The attention to detail and care the team put into making sure everything was done right far exceeded my expectations. If you're looking to go solar, look no further than Rose and OneSun. This is truly the best company I've ever worked with!

I did a ton of research and decided to go with Neosun and they installed a 14KW system with Tesla…read morePowerwall. They handled all the permits and SCE coordination to ensuring timely completion. Daniel & Nare were working with me on this one and the crew completed the work in a day. Fair price for the scope of work. If you're in the LA/OC and doing your homework on solar installers -- these guys are worth the call.

I had a pleasant experience working with Neosun, Nare really helped me through the whole process…read moreand answered my questions on time, overall very smooth process ! their pricing was very fair and very competitive compared to other companies ,I got 20 kw enphase power bank, and I am able to run the whole house without depending on the utility company , definitely recommend!!!!!!

Tim (AWS) said they reviewed my solar system and confirmed the production shortfall, and they would…read morecompensate for the shortfall even though it is beyond the warranty. They suggest regular cleaning will help keep performance on track. I am still skeptical, but I will do this and keep track of the system production monthly to see whether or not it's going to meet the guaranteed minimum production. I truly hope my solar system would performed as they claimed; I would be happy just to get the guaranteed minimum production. I updated my rating back to 5 Stars based on their cooperation in addressing the issues reasonably fair.

AWS did the solar on my house maybe like 4 years ago now and everything has been tip top shape…read more Anytime I've needed service on the system they have been great to come and fix it. Worth getting a quote from them.

The solar system was installed successfully and everything is working as advertised…read more Enrique did a good job with the installation and the attic related wiring.

A few years ago, I contacted Imperial Solar for an evaluation. I was impressed with their customer…read moreservice, communication, and reputation, but we were not ready to proceed with installation at that time. A few months ago, we decided to move forward with installing a 13.4 KW solar system. Imperial Solar was fair and transparent during the evaluation, and efficient and detail-oriented throughout the installation. The crew arrived on time and left the area clean. The system was installed professionally and looks excellent. Since our meter change, our bill has decreased by 80%, even during winter. We look forward to seeing our savings in the summer. We are very satisfied with Imperial Solar and highly recommend them to anyone considering a solar installation.

California Solar and Electric. CS&E is simply the best. Call Mark Howe. Honest, reliable,…read moreprofessional, skilled and highly competitive. Best warranty and quality materials and labor. 949 637-9108. They are out of Santa Clarita. We are so happy and satisfied with our system and our bills have gone from $300 plus a month to less than $40 a month. Also when the power has gone out in our neighborhood the battery backup has saved the day. Stellar value, workmanship, professionalism and service plus a 25 year warranty. Highly recommended

Within an hour of posting my initial review regarding a delayed referral bonus, the owner…read morepersonally reached out, apologized for the administrative oversight, and sent the $500 immediately. I really appreciate the direct accountability and quick resolution. I'm leaving my original review below for transparency, but their prompt response today restored my confidence in their management. I originally had a positive experience with California Solar Electric during my 10.12 kW solar and Powerwall 3 installation last year. Unfortunately, their post-install customer support and business ethics are nonexistent. I referred a friend who completed their installation months ago. I was explicitly promised a $500 referral bonus for this. After months of waiting, I tried following up multiple times privately to give them a chance to make it right, but I am now being completely ignored. It's a shame because I have several neighbors here in Fountain Valley who are currently shopping around for solar and battery storage. I was planning to refer them here, but I cannot recommend a company that fails to honor its own written agreements and ducks communication. Buyer beware: the installation team does good work, but do not trust a word management says about referral incentives or post-sale promises. Still waiting for my $500.

Oh my ... Arvin was our sales rep and he rocked at selling this to us! We have had these for two…read moreto three year's now, and our Solar Panels have saved us oodles and oodles of money on our Electric bill... The money that we have saved is amazing!!! Go here and ask for Arvin

Horrible service, the device doesn't work and is still under warranty. We've contacted the company…read moremultiple times to send someone out and they are completely ignoring our calls. It's not right, we have a brand new construction. They installed a faulty device and refuse to take accountability.

Victor, Miguel and the team were professional from start to finish. They redid my roof. Installed…read moreinsulation and installed solar panels. They fixed any issues I had very quickly and professionally. The installation was very quick and on schedule. I had them install an Enphase solar system. I will use them again when I add some panels or upgrade the system.

Best Solar really impressed me! I'm in Glendale, CA, and they managed to install my solar panels…read morein under a week. The crew was on time, worked efficiently, and got everything done smoothly. On top of that, the cost was very reasonable for the quality of work and service they provided. If you're thinking about going solar, I highly recommend giving them a call!

This year, LaSolar Company installed my solar system. Their crew did a great job and provided…read moreexcellent customer service. The solar system has plenty of energy, and my monthly electric bills are close to $0. I highly recommend La Solar. Thank you, Irma O.

I had an excellent experience with Jeff at LA Solar. He helped me reconnect my Tesla Powerwall…read moreafter it stopped charging, and his customer service was outstanding. Jeff patiently walked me through the entire troubleshooting process over the phone. He was extremely knowledgeable, professional, and took the time to explain each step clearly. What really impressed me was that he even offered to send a technician out the same day if we couldn't resolve the issue remotely. Thanks to Jeff's guidance, we had everything working perfectly in about 10 minutes. It's rare to find someone who is so patient, responsive, and genuinely committed to helping customers. Thank you, Jeff, for your excellent support. I highly recommend LA Solar to anyone looking for professional service and outstanding customer care!

Want solar, but want it easy? This company made it pain free, and COST FREE. They reviewed my…read moreelectric bill, and designed a system that saved me money from day one! The products are awesome, the service is almost unbelievable these days, and the installation and set-up were carefree! I would like to remove a star so it would sound more believable, but I just CAN'T. If you own your home, YOU ARE PAYING TOO MUCH for electricity. My wife was VERY sceptical, but she is now a solar convert. It was so easy, zero money up front, and savings immediately! All true, call them and they will prove it to you too!

STOP!!! Whatever you do, don't do any busyness with this company. I had a solar system installed on…read moremy house several years ago and its been nothing but a pain. The warranties are worthless because the company is worthless. I can't understand why the web site is still up because i haven't been able to contact them for years. i had to give them a one star rating because it's required. They don't even deserve the one star

I'd highly recommend Solar Optimum and Roofing Optimum…read more We've had our solar system from Solar Optimum for more than 10 years, and our experience is a great example of why choosing the right company from the beginning matters. They installed a high-quality system that has performed extremely well over the years. At one point, both of our inverters experienced a manufacturer-related issue. In fact, Solar Optimum identified the problem before we even realized something was wrong. They worked directly with the manufacturer to secure a replacement inverter at no cost and handled the installation quickly and professionally. When it came time to replace our roof, we didn't hesitate to reach out to Solar Optimum again. Their GAF Master Elite certification and the advantages of having the same company manage both the solar and roofing work provided tremendous peace of mind. The warranty benefits are excellent, and the roofing warranty is transferable, which adds real value and is something many roofing companies do not offer. We recently completed a full solar removal, reroof, and solar reinstallation project with the Optimum team, and we couldn't be happier with the outcome. The entire project was completed in about a week, exactly in line with the schedule that was provided at the start. The crews showed up on time, worked hard, communicated well, and cleaned up thoroughly at the end of each day despite the significant amount of work involved. From start to finish, the process was smooth, professional, and well-managed. It's rare to find a company that delivers this level of service over a relationship spanning more than a decade. We couldn't be more pleased and highly recommend Solar Optimum and Roofing Optimum.

signed a contract with Solar Optimum on Aug 12th, 2026. Per phone call with Eddie Rodriguez, it was…read moremade clear that I wanted to have it installed by end of year in order to qualify for the tax credit before it expired. A lot of time passed by without hearing back. Then I was told the solar panels that I had agreed to are no longer available. They replaced them with cheaper options. Later on, they said the replacements were no longer available and switched them again to a cheaper option. I received an email on 10/28/25 saying the solar panels are ready for installation. Then I didn't receive an update until 12/10/25 asking for information that I had already confirmed via phone call, the clearance from solar panels as well as the panels being permitted. Then I received an email on 12/23/25 asking for this confirmation again. I sent a follow up, and did not hear back from Eddie until 12/27/25. He gave me a call and told me that Solar Optimum is unable to complete the installation by the end of the year, making me ineligible for the tax credit. He suggested claiming the system was installed/invoiced in my taxes, which is tax fraud as the tax credit makes it explicitly clear that it needs to be installed and powered by 12/31/25. On Dec 30th, he said he would update me within 2 weeks. 2 weeks elapsed and no update was given. At the end of my experience with Solar Optimum, I was took a loan that was no longer needed which ran my credit which has negative implications for my credit score. I also missed out on thousands in tax credit as well as future long term savings. There was misrepresentation regarding what the company had to offer and so far the company has not offered any option to rectify the situation. Will never do business with this company and strongly advise against using their services. The only option remaining is if they are able to discount the panels by the amount of tax credit I have missed out on, which will be my desired resolution requested.