Best solar companies California Mona Lee Solar Ca

Mona Lee Solar Ca Reviews

California installer. This profile is built from public installation records and published ratings, not paid placement.

362verified installs in California utility records*
175recent installs, 2025-26 records*
2023first year in county records
5.7/10Solar.com Score · 135 reviews analyzed

Solar.com Installer Score for Mona Lee Solar Ca

One score, computed the same way for every installer. We read the full text of all 135 substantive published Mona Lee Solar Ca review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

5.7/10

Blends the six category scores (70%) with the recency-weighted star record (30%).

Synthesized from 135 substantive customer review texts.

Yelp 3.4★ · 135 reviews

Updated September 28, 2026 · No installer can pay to change this score · How scores work →

Read what customers actually say ↓
Review star recordRecency-weighted star ratings across platforms, converted to a 0-10 signal before it is blended into the headline Solar.com Score.7.5

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.6.4

63 reviews speak to this · 47 praise · 16 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.4.6

61 reviews speak to this · 32 praise · 28 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.3.9

83 reviews speak to this · 34 praise · 49 complaints

Timeline ReliabilityHow well the company manages the path from contract through permits, installation, inspection, and turn-on — without the customer having to chase it.4.3

55 reviews speak to this · 22 praise · 32 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.5.4

35 reviews speak to this · 20 praise · 15 complaints

Long-Term SupportHow well the system performs after turn-on, how the company handles monitoring, warranty claims, and service calls — and its staying power to honor them.5.0

30 reviews speak to this · 6 praise · 24 complaints

#633 of 678 scored in California by Solar.com Installer Score

How does Mona Lee Solar Ca compare where you live? Rankings are local; an installer that leads one city can trail in the next. See how they rank in your city →

Why this differs from star ratings: most five-star reviews say “great company” and stop, and star averages reward that. These category scores only count reviews with concrete evidence, weighted by recency and the reviewer’s track record. A company can hold a strong star average while specific categories score lower; that gap is usually where the real story is. Categories with more complaints than praise are the questions worth asking any bidder, not necessarily dealbreakers.

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Where Mona Lee Solar Ca builds

County-by-county activity from CPUC records through May 2026.

What this data covers: *Counts on this page, including the totals up top, come from investor-owned-utility interconnection records (SCE, SDG&E, PG&E). Work in municipal-utility territory, such as LADWP or city utilities, and outside California does not appear here, so this company's true totals are higher than shown. Unlike the county rankings, this profile also shows counties below the 250-install ranking floor.

CountyVerified installsRecent 2025-26Active sinceMedian system% leasedCounty rankingLink to the county ranking page. This company's rank on this page is its Solar.com Installer Score rank, shown above.
Los Angeles County753920246.9 kW10.7%below ranking floor (under 250 installs)
San Diego County531820235.6 kW3.8%below ranking floor (under 250 installs)
Riverside County471820238.0 kW10.6%below ranking floor (under 250 installs)
San Bernardino County392220247.0 kW23.1%below ranking floor (under 250 installs)
Contra Costa County261920247.1 kW23.1%below ranking floor (under 250 installs)
Alameda County19920235.3 kW5.3%below ranking floor (under 250 installs)
Santa Clara County18320245.1 kW5.6%below ranking floor (under 250 installs)
San Mateo County17520245.5 kW0.0%below ranking floor (under 250 installs)
Orange County16820248.0 kW12.5%below ranking floor (under 250 installs)
Fresno County151120247.1 kW26.7%below ranking floor (under 250 installs)

% leased counts systems recorded as third party owned (lease or power purchase agreement); the remainder are customer owned. Median system size is the middle system this company installed in that county. Star ratings and review counts are from Google.

Mona Lee Solar Ca reviews: what customers say

An independent synthesis of published customer feedback, updated September 28, 2026. Green marks praise, amber mixed experiences, red complaints.

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."

Bottom line: Across 135 substantive Yelp reviews, MONA LEE SOLAR CA earns a 5.7/10 overall score, with the strongest signals in sales clarity and the weakest in communication, timing, and post-install support. Reviewers most often praise professional staff and some good installs, while complaints concentrate on slow responses, long project timelines, and transparency concerns around pricing and financing.

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.

About Mona Lee Solar Ca

Company background from published business information and licensing records.

Also files CPUC records as: Mona Lee.

Products

Solar

Service area

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

Work for this company or see something out of date? Profiles can be claimed and corrected: contact partners@solar.com. Placement on solar.com is never for sale.

Recorded installs by year

Residential interconnections statewide in PG&E, SCE, and SDG&E records through May 2026.
22
2023
216
'24
182
'25
36
'26

Important context: this chart shows investor-owned-utility records only. Companies that shift work toward municipal-utility territory (LADWP and city power departments) or other states will show declining bars here even while building steadily elsewhere, and 2025-26 records also lag real installation dates. Treat this as a partial window, not the company's full trajectory.

FAQ about Mona Lee Solar Ca

What do customers say in Mona Lee Solar Ca reviews?

We analyzed 135 substantive published customer reviews of Mona Lee Solar Ca in full. The company's Solar.com Installer Score is 5.7/10, with category-level detail on this page covering sales integrity, price transparency, communication, timeline reliability, workmanship, and long-term support.

How many solar systems has Mona Lee Solar Ca installed?

Mona Lee Solar Ca appears as installer of record on 362+ residential systems in California investor-owned-utility interconnection records through May 2026. Work in municipal-utility territory or other states does not appear in those public records.

How can I compare Mona Lee Solar Ca's pricing?

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How we built this data

Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.

Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.