Sales & proposal integrity
Sales Integrity7.6/10
Reviewers describe a sales process that is clear, practical, and low-pressure. They often say the proposals made sense, the estimates were straightforward, and expectations were set clearly from the start.Solar.com's composite of published customer feedback, not a customer quote
Clear, sensible proposals. Reviewers say the team explained system choices well and provided estimates that were easy to understand. Representative review excerpt: "From the first phone call, they came to our home, evaluated the best number and placement of panels, recommended the right battery setup, and gave us a clear estimate."
No-pressure sales approach. Several reviewers describe the process as honest and competent, with recommendations that felt reasonable rather than pushy. Representative review excerpt: "My only regret is I didn't have them install the system to begin with, Thank you Diamond Solar for running an Honest, Competent enterprise."
Pricing felt justified. Some reviewers mention that the pricing and proposed setup aligned well with what they needed, including specialized design requests. Representative review excerpt: "Their pricing was the best of the three contractors we considered, and they were also the only company willing to set up a non-export system so we could preserve our..."
Price & financing transparency
Price Transparency6.9/10
Reviews are generally positive on pricing clarity, with several customers saying the company’s pricing made sense for the work and system design. The main watch-out is a small amount of negative feedback tied to post-sale financial support or follow-up around a system issue.Solar.com's composite of published customer feedback, not a customer quote
Pricing generally described as fair. Reviewers describe a recurring pattern in this area. Representative review excerpt: "Their pricing was the best of the three contractors we considered, and they were also the only company willing to set up a non-export system so we could preserve our..."
Financial expectations discussed clearly. Some reviewers say they understood the financial side of the project and the reasons for moving forward after seeing their utility costs. Representative review excerpt: "After dealing with PG&E bills well over $1,000 a month, we knew solar was the right move - but actually committing to it was a whole other story."
Isolated complaint about post-sale support. A small amount of feedback describes frustration when seeking help after a system problem, suggesting that the follow-up experience was not always smooth. Representative review excerpt: "The system was not working, when she called to get her system fixed they told her the company who installed the system had sold the company to another and they..."
Communication & coordination
Communication8.0/10
Reviewers consistently describe strong communication throughout the project. They mention quick responses, direct access to the team, and a sense that the company stayed engaged from start to finish.Solar.com's composite of published customer feedback, not a customer quote
Fast, direct responses. Reviewers say they could reach the team easily and usually got quick replies to questions. Representative review excerpt: "They were highly communicative from start to finish -- I had direct cell numbers for the team and could text questions anytime, and they usually responded very quickly, often immediately."
Responsive during active projects. Customers report that follow-up during the project was prompt and that concerns were handled without much delay. Representative review excerpt: "As with the first project I called Barak several times during the project and he was extremely responsive."
Coordination stayed engaged. Some reviewers describe working with the same team over multiple projects and say communication remained steady over time. Representative review excerpt: "We have been working with Barak and his team for a year or so now and competed a number of large projects."
Timeline reliability
Timeline Reliability7.6/10
Reviewers generally describe timelines as dependable, with work moving along at a good pace once the project was underway. Comments also suggest the company was transparent about scheduling constraints and still delivered a reasonable timeline overall.Solar.com's composite of published customer feedback, not a customer quote
Scheduling handled transparently. Reviewers say the company was honest about timing constraints and still found a workable schedule. Representative review excerpt: "They walked us through our options clearly, were honest about scheduling constraints, and still found a way to get us in on a pretty good timeline."
Install moves quickly once scheduled. Some customers report that the physical installation itself was completed quickly after the site visit and measurements. Representative review excerpt: "After the initial visit and measurements the actual install only took 2 days."
Projects reached usable activation. Reviewers describe systems moving into regular use after installation, with few signs of lingering schedule issues in the feedback. Representative review excerpt: "Since installation, we have relied entirely on our solar system, even while running the air conditioner constantly, with almost no dependence on PG&E."
Workmanship & site care
Workmanship8.4/10
Reviewers describe the installation work as professional, skilled, and efficient. Feedback also points to crews that handled equipment cleanly and completed setups without much disruption.Solar.com's composite of published customer feedback, not a customer quote
Professional installation quality. Customers often say the work was done carefully and to a high standard. Representative review excerpt: "Being in construction for fifty years I can honestly say their work was very professional and impeccable which is a rarity now days."
Skilled crew execution. Reviewers mention efficient electricians and installers who completed the setup with confidence and technical skill. Representative review excerpt: "Connor, the electrician who handled the installation, was efficient, professional, and obviously skilled, completing the entire setup in just a few hours."
Crew handled complex setups well. Some feedback highlights multi-part installs involving batteries and electrical equipment, with reviewers describing the finished work positively. Representative review excerpt: "Barak and his crew installed a 7KW solar array two Tesla batteries and a Span sub panel on our house."
Long-term support & performance
Long-Term Support7.7/10
Reviewers generally report that systems performed well after turn-on and that the company remained attentive after installation. Several comments emphasize peace of mind, working equipment, and confidence in the follow-up experience.Solar.com's composite of published customer feedback, not a customer quote
Systems reported to work well. Reviewers say the system was operating properly and delivering the expected results after installation. Representative review excerpt: "They got the job done and the system works great."
Post-install monitoring and review. Some customers waited months before posting so they could judge performance over time, and they still described the system positively. Representative review excerpt: "I waited several months to write this review, allowing me time to fully review my new expanded solar and added battery system."
Follow-up gave customers confidence. Reviewers also note that they felt taken care of after the job, which suggests decent long-term support in the available feedback. Representative review excerpt: "These systems are one of the biggest dollar items you'll end up purchasing in life outside of your home, and you need to know you are taken care of."
How this is built: category scores and summaries weigh the company's full published rating record (62 Google reviews averaging 5.0 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle and Yelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.