Sales & proposal integrity
Sales Integrity6.4/10
Reviewers give this area a mostly positive but mixed read.Solar.com's composite of published customer feedback, not a customer quote
Helpful, professional sales process. Some reviewers describe a straightforward proposal process with responsive staff who answered questions and provided clear follow-up. Representative review excerpt: "Greg Gerhart from Mona Lee is very professional and attended all my questions about back up battery install."
Clear quoting and no-pressure approach. Reviewers say they received detailed quotes and appreciated a low-pressure sales style. A few also report that the company explained next steps and addressed concerns during the proposal stage. Representative review excerpt: "No pressure, no long winded sales calls, just answers to my questions and help with what comes next."
Expectation gaps after signing. Complaints describe delayed or canceled installations after contract signing and disputes tied to incentive timing or project completion. Some reviewers also report mismatches between what was presented upfront and what happened later in the project. Representative review excerpt: "Multiple cancellation for installation once they get you sign the contract."
Price & financing transparency
Price Transparency4.6/10
This category trends negative overall.Solar.com's composite of published customer feedback, not a customer quote
Some positive pricing feedback. A few also report that financing and permission-to-operate steps moved as expected. Representative review excerpt: "From financing to permission to operate our system went as planned."
Clear quote and low-pressure start. Some customers describe receiving a detailed quote quickly and not feeling pushed into a decision. These reviews frame the pricing conversation as straightforward at the outset. Representative review excerpt: "They were able to provide a quote while I was talking to them on the phone and followed up a few minutes later with a detailed email showing the location..."
Money and deposit concerns. Complaints focus on projects where customers say they paid the full amount before the system was working, asked for deposit refunds after cancellation, or ran into disputes over unpaid work. Reviewers also mention incentive timing confusion and a disconnect between expected and actual costs. Representative review excerpt: "It's been a full year since we started our project, we've paid the entire price and not only have we not got a working battery yet, they've disabled our solar..."
Communication & coordination
Communication3.9/10
Communication is one of the weakest areas in the review set. A smaller group of reviewers describe attentive supervisors and solid coordination, but many more report slow responses, missed appointments, poor follow-through, and difficulty reaching the company during project issues.Solar.com's composite of published customer feedback, not a customer quote
Frequent contact and response problems. The dominant complaint pattern is poor responsiveness, missed appointments, and communication that stalled for days or weeks. Reviewers also describe needing to contact outside parties to get responses or progress from the company. Representative review excerpt: "They missed every single appointment now they've shut off their telephones and only do callbacks but even then they don't respond for days and sometimes weeks, I've also emailed them..."
Some attentive project supervision. Positive reviews mention individual staff members who were responsive, committed to the project, and helpful in keeping work moving. These reviewers describe a more organized experience when one person clearly owned the job. Representative review excerpt: "Ehsan was an outstanding supervisor, and we appreciate his communication and commitment to our project."
Helpful status updates in some cases. A few reviewers say they received explanations about milestones and timing, especially when approvals or inspections affected the schedule. This suggests some customers did get context for the process. Representative review excerpt: "Customers should be aware that there are multiple milestones involved, and timelines can be extended due to factors like utility company approvals and local building inspections."
Timeline reliability
Timeline Reliability4.3/10
Timeline feedback is mixed to negative. Some reviewers report fast installs or smooth pass-through of inspections, but many others describe delays tied to permits, utility approvals, inspections, and activation, along with repeated no-shows and long gaps before completion.Solar.com's composite of published customer feedback, not a customer quote
Delays, no-shows, and long activation waits. Many complaints describe repeated delays, missed inspections, and projects that took far longer than expected to activate. Reviewers also report appointment no-shows and long waits between installation and permission to operate. Representative review excerpt: "This company also scheduled 4 inspections (4 different days) with our city, which we took days off, while they pulled no-shows for."
Fast completions in some projects. A number of reviewers say installation and inspection moved quickly, with some projects finishing in a couple of months or less. These reviews present the timeline as efficient and well managed. Representative review excerpt: "Got it installed and passed inspection in 2 months!"
Process-aware expectations. Some customers note that solar projects can involve multiple milestones and outside approvals, which can extend the schedule. These comments suggest a realistic view of the permitting and activation process. Representative review excerpt: "Customers should be aware that there are multiple milestones involved, and timelines can be extended due to factors like utility company approvals and local building inspections."
Workmanship & site care
Workmanship5.4/10
Workmanship feedback is split. Some reviewers praise professional crews, clean installations, and timely work, while others describe damaged roofs, installation mistakes, and subcontracted crews that needed follow-up or corrections.Solar.com's composite of published customer feedback, not a customer quote
Professional installation experiences. Positive reviews describe efficient crews, good-looking installs, and professional handling of the work site. Several customers say the installation met expectations and the crew was easy to work with. Representative review excerpt: "They were timely with installation, inspections and the work preformed was top notch."
Detailed and well-received crew work. Some reviewers specifically praise the installation team’s workmanship and say the process felt smooth and well explained. These comments point to strong results on certain jobs. Representative review excerpt: "Dear Monolee Team, I am writing to express my sincere appreciation for the exceptional workmanship demonstrated by your San Diego installation crew."
Damage and correction concerns. Complaints focus on damaged roofs, installation errors, and subcontractors who reportedly needed significant remediation. Reviewers also say some fixes took a long time to resolve. Representative review excerpt: "They outsource terrible installers, who damaged our roof, and did a terrible job to remedy (took a year)."
Long-term support & performance
Long-Term Support5.0/10
Post-install support and system performance are mixed, leaning negative. Some customers report good activation experiences and acceptable energy results, but many others describe slow service, battery or inverter problems, warranty friction, and difficulty getting follow-up after the system was turned on.Solar.com's composite of published customer feedback, not a customer quote
Service and warranty complaints after install. The larger complaint pattern is slow support after turn-on, unresolved equipment issues, and frustration with warranty-related communication. Reviewers also report batteries not working and long waits for service callbacks. Representative review excerpt: "they are telling me i have to let them do it to be covered by warranty, but they aren't fixing it!"
Good results for some customers. A few reviewers say their system was working well after activation and that their electricity bills improved. Others describe a smooth handoff into monitoring and normal operation. Representative review excerpt: "Okay, I was concerned during the winter months but when I saw my latest electric bill I'm happy now."
Helpful support in successful cases. Some customers report solid service from first contact through final activation, including help getting monitoring set up after installation. These reviews suggest that post-install support can go well in some cases. Representative review excerpt: "Mona Lee provided amazing customer service from the first contact to the final activation of our solar system."
How this is built: category scores and summaries weigh the company's full published rating record, the most recent and most relevant review texts, and recurring feedback themes verified acrossYelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.