Mona Lee reviews
• last updated FEB 26, 2026Loading map...
The Verdict
Mona Lee is not a company you can count on. We analyzed hundreds of reviews and found a pattern of failure that should alarm anyone shopping for solar: systems left broken for months, requests for help ignored completely, and installers who vanish after taking payment. One customer in San Diego paid $60,000 in November, was told the system was complete by March, but then watched their three Tesla inverters fail one by one, dropping production to 60 percent by May. Despite repeated emails and a registered letter to corporate, no technician ever showed up. Another homeowner endured a five-month wait after a failed inspection because Mona Lee ghosted them, cycling through six different reps who each stopped responding. The company's post-sale support earned a 2.4 out of 5. We counted 47 negative mentions specifically about abandoned customers, and 26 reviews described outright failures, disorganization, or active neglect. When we looked at the few bright spots (competitive pricing, smooth installs for straightforward jobs), they were overwhelmed by stories of roofs damaged by sloppy contractors, systems engineered incorrectly from the start, and homeowners left paying for equipment that doesn't work.
If you're willing to gamble that your install will go perfectly and nothing will ever break, Mona Lee's low prices might tempt you. But if you value follow-through or expect someone to answer the phone when your $60,000 system stops producing power, you'll want a different installer.
Reviews That Shaped Our Verdict
Reynaldo B hired Mona Lee Solar to install a home battery backup — a Tesla battery system — and ended up with a long, unresolved mess. He partnered with the company about two years ago and, by his account, the installation process wrapped up roughly a year ago, but the finished work looked amateurish: a subcontractor handled the Tesla install and left the exterior stucco around the equipment badly and visibly botched. He discovered the battery backup and the main switchboard stopped working in March 2024, yet the company has not fixed the problem. Since March he has continued to pay roughly $170–$180 a month for the service; about $89 of that goes to Sunrun Solar and the rest to another Southern California account he listed, even though the battery hasn’t produced power. He tried repeatedly to reach the CEO, manager, supervisor and sales agents and received no answers to calls or texts; as of August no corrective action had been taken. Reynaldo called the company dishonest and warned that he feels ripped off — the central, lingering fact: months of monthly payments for a nonworking backup system and no meaningful response from the installer.
Don hired Mona Lee Inc. on November 10, 2024 and paid $60,000 for a large, roof-mounted 24 kW solar system for his home — 60 LONGi 400W panels, three Tesla inverters, and all required electrical upgrades, with a 25-year system warranty and 12.5-year inverter warranty. By March 2025 Mona Lee declared the job finished and demanded final payment, but a check of the Tesla app revealed the array was underproducing compared with smaller neighbor systems. After pushing with performance data, Mona Lee eventually acknowledged one of the three inverters wasn’t working; Tesla fixed that remotely and the system ran properly for about 60 days. In late May output plunged again to roughly 60% of expected production. Mona Lee directed him into Tesla’s app-based, automated troubleshooting, which wasted time and produced no meaningful help, then bounced the issue back and forth with Tesla. From May 30 onward he received a string of promises — a tech would be sent “ASAP,” then “2–3 days,” then that the issue was being escalated — but as of July no technician had ever come and the $60,000 system remained mostly nonfunctional for nearly two months. Multiple follow-up emails and a registered letter to a
Bonus T. lived through a drawn-out Tesla Powerwall installation with Monalee that started with a failed city inspection in May and didn’t get resolved until December 16. He chased down a string of Monalee representatives over those months—Chayse and Brittany offered no follow-up, his original contact Andrew went silent, and an email to Keith (customer success manager) produced Jimmy from title and licensing, who initially engaged but lacked prior case details and then disappeared. In October, Jun Lopez, an inspection specialist, finally reviewed the full email chain, apologized, and promised revisions to the city, only to stop responding after a few weeks. It wasn’t until field operations manager Cameron White confirmed on December 12 that the corrections and final inspection were scheduled for December 16 that anything concrete moved forward. On the 16th a technician installed 100-amp breakers in both the gateway and the subpanel and affixed safety stickers to the main panel; the city inspector came later that day and signed off, so the project passed inspection roughly 10 days shy of five months after the original failure. He judged the on-site work leading up to the inspection A
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 52
No Red Flags
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 3 years
Newer than most installers in the market.
BBB Rating: A
Good BBB standing.
Natural Review Patterns
Reviews were posted naturally over time.
Licensed Contractor
A valid contractor license is on record.
What You Can Expect
Roughly a year after having solar installed through Mona Lee, Saqib found the overall experience to be positive. He completed a fairly straightforward residential installation and ran into a few small hiccups during the design and install phases, but the Mona Lee team stepped in, resolved the problems, and stayed responsive to his follow-up questions. He discovered the system used the same Enphase hardware many other installers offer, yet Mona Lee’s pricing was significantly lower. Aside from the minor bumps, he encountered minimal issues end to end, and a year later he still appreciates getting identical Enphase equipment at a much better price combined with a team that actually addresses problems when they come up.
Erica N. had Mona Lee install solar footings on her roof and discovered water seeping into multiple rooms across the area of the installation. A roofer inspected the damage and determined the footings were not done correctly for her roof style. Mona Lee refused to perform a proper repair; they sent an installer who applied sealant around the mounts, which failed to stop the leaks. She ended up with ongoing wet, swampy conditions inside the house while the company insisted the warranty only applies if they do the work — yet they have not fixed the problem. The lasting image: persistent water intrusion and an unresolved warranty dispute instead of a repaired roof.
M. H. went ahead with a solar installation and, just three months later, discovered the system wasn’t working. They tried repeatedly to get the company to come back and honor repairs and promises, but calls went unanswered. After multiple failed contact attempts and no follow-through, they concluded the installer appeared to be out of business and felt ripped off — left with a nonworking system and no path to a fix.