Cosmic Solar Reviews

Reviewers mostly describe the sales and proposal process as clear, patient, and detailed, with many saying expectations were explained well upfront. A small set of complaints centers on pressure tactics, mismatched proposal assumptions, and confusion around price changes or savings framing.Solar.com's composite of published customer feedback, not a customer quote

Clear, patient sales process. Many reviewers say the sales team took time to answer questions, explain the process, and keep them informed through the proposal stage. Representative review excerpt: "It started with the sales person, Ken who was very patient with all my concerns and then Pey, the project manager, who was super nice, helpful, very knowledgeable and refreshingly..."

Detailed expectations upfront. Several customers report that the quoting and planning process was explained in detail, including what to expect next and how the project would unfold. Representative review excerpt: "Mary and Ashley kept us informed each step of the way and were so detailed in making sure it was all perfect."

Watch-out: pressure or mismatch concerns. A smaller group of reviewers describe high-pressure sales behavior or say parts of the proposal did not align with their utility data or later pricing expectations. Representative review excerpt: "Sunpower is top tier solar panel manf in USA .Cosmic sales presentation material was good but did not accurately reflect data from my SDGE bill."

At the same time, some complaints mention price gaps, financing timing, or unexpected payment-related frustration, so this category reads positive but not spotless.Solar.com's composite of published customer feedback, not a customer quote

Fair or Pricing pricing. Reviewers describe a recurring pattern in this area. Representative review excerpt: "They completed the job in a clean and professional manner, exactly on schedule, at a fair price."

Payment terms explained clearly. Some customers report that the quoting process and payment milestones were laid out in detail before work moved forward. Representative review excerpt: "Everything went well- quoting process and sequence of events was clearly explained in detail, as were payment milestones and expectations."

Watch-out: price and financing friction. A smaller set of reviewers describe concern about price differences, financing timing, or payment issues that were not as clear as they expected. Representative review excerpt: "With that being said I was inclined to say he was a great guy; but that doesnt cover the gap on the price difference for what he offered - Smaller..."

This is one of the strongest areas in the review set. Reviewers frequently describe responsive staff, steady updates, and good coordination across office, project management, and field teams, while a small minority report trouble getting callbacks or follow-up.Solar.com's composite of published customer feedback, not a customer quote

Steady updates throughout. Many reviewers say they were kept informed step by step and felt the project stayed organized from sales through completion. Representative review excerpt: "We had the roof replaced and solar installed, communication was excellent throughout the whole process, we were incredibly nervous just getting the whole process started but in the end we..."

Helpful team handoffs. Customers often describe the office, project manager, and field crews as responsive and easy to work with when questions came up. Representative review excerpt: "It started with the sales person, Ken who was very patient with all my concerns and then Pey, the project manager, who was super nice, helpful, very knowledgeable and refreshingly..."

Watch-out: missed follow-up. A few reviewers report difficulty reaching the company or getting responses after raising issues, especially when they wanted documented follow-up. Representative review excerpt: "I made numerous calls and emails to Pey and the owner Bahram Shadzi and did not receive any response."

Reviewers commonly say projects moved forward as promised or were handled well even when the process took time. Complaints are relatively rare, but a few reviewers describe schedule or approval issues that led to frustration.Solar.com's composite of published customer feedback, not a customer quote

On-schedule completion described. Many customers say the work was completed on schedule or as promised, with permits, installation, and activation handled smoothly enough for them to feel reassured. Representative review excerpt: "Roof work and installation were performed on schedule as promised and work was done neatly and the install site left clean and scrap free."

Managed longer projects well. Some reviewers note that even when the project became lengthy, the team stayed professional and helped keep the process moving. Representative review excerpt: "Very happy with their professional team, who managed what turned out to be a lengthy process."

Watch-out: approval or response delays. A small number of reviewers describe concerns about work happening without clear approval or about delays that followed once a project was underway. Representative review excerpt: "What actually happened next was they came onto my property and installed solar panels on the ADU without ever contacting me, making an appointment, or getting any kind of approval."

Reviewers are very positive about the installation crews, describing neat work, professional behavior, and good cleanup. The complaint pattern is limited but includes a few reports of installation mistakes or damage-related concerns that were later addressed or required correction.Solar.com's composite of published customer feedback, not a customer quote

Clean, professional installs. Many reviewers say the crews worked cleanly and professionally, with projects completed neatly and the site left in good condition. Representative review excerpt: "They installed a full Enphase battery backup system, two new subpanels, and an EV charger, all cleanly and professionally."

Good care around complex jobs. Customers also describe the team as capable on larger projects involving roof work, panel removal, and reinstallations. Representative review excerpt: "Over the years, our 30 yo roof began giving us problems, and we didn't want anyone else to remove our solar panels, so called on Pey and Cosmic to come..."

Watch-out: occasional installation issues. A small number of reviewers report workmanship problems such as a part needing replacement or concerns about how a component was installed. Representative review excerpt: "Cosmic Solar immediately sent a technician out to replace the panel, which should not have been installed on the roof in the first place."

This category is a major strength in the review corpus. Reviewers frequently report good production, prompt warranty help, and responsive service after turn-on, while only a few mention follow-up gaps or repeated service visits.Solar.com's composite of published customer feedback, not a customer quote

Responsive warranty service. Many customers say the company handled inverter or microinverter problems quickly and kept them informed during service work. Representative review excerpt: "We are grateful for Khi (service manager) and the team of technicians, who helped us replace a broken microinverter under warranty within a couple of days after we reported it."

Helpful post-install support. Reviewers also describe technicians helping with app setup, monitoring, and other post-install questions after the system was running. Representative review excerpt: "Technician helped me setup the Tesla battery app on my phone with appropriate settings to maximize benefit or the solar/battery installation."

Watch-out: service follow-up can vary. A small number of reviewers mention repeated visits or a lack of outreach after installation, suggesting follow-up is not always consistent. Representative review excerpt: "But if 10 visits over 3 months to diagnose and replace faulty micro inverters seems reasonable, go ahead and use Cosmic Solar with their SunPower equipment."

Products

Solar

Service area

California. Note: the install counts on this page cover California investor-owned-utility records only.