Score
Horizon Solar Power reviews
• updated MAR 3, 2026Loading map...
The Verdict
This company's failures stack up fast. In one review, panels were installed but never turned on, and the installer left the homeowner with massive roof leaks and no accountability for two years. Another customer signed in October, had the wrong panels installed despite a clear upfront request, discovered smashed roof tiles glued back together like a broken vase, and by December still had no working system. We found dozens of reviews echoing the same pattern: installations drag on for months or never finish, project coordinators vanish mid-job, and roof damage goes unrepaired. In one case, a system purchased in May 2019 was still not operational in June 2020, 13 months later, with the company blaming COVID despite jobs requiring only one or two workers. Another homeowner bought the system outright, discovered it wasn't producing power two years in, and faced $400 electric bills while repair appointments stretched out 30 days. The most alarming thread runs through 53 reviews describing failed inspections, nonoperational systems, property damage, and customers considering lawsuits just to get what they paid for.
If you're considering Horizon, know that multiple customers ended up with damaged roofs, months-long delays, and systems that never worked. One bought solar in cash and two years later faced $400 electric bills with no response from the company. This is not a case of a few unhappy people. It's a pattern of unfinished jobs and broken promises.
3 Stories That Stood Out
Louise P. discovered that the moment solar panels went on her recently purchased, newly roofed home in late 2016, trouble began: they were installed in November but didn’t start operating until February 2017, and after the first rain the roof began leaking in multiple spots directly under the array. She had passed a home inspection before buying, and Horizon inspected the roof before installation, yet the leaks appeared only where the panels sat. Over the next two years she brought in four different roofers, two insurance companies and general contractors to diagnose the damage, collected letters from contractors assigning blame to Horizon, and even had the original sales rep back her up — the rep recalled being trained to guarantee that the roof would be covered. Horizon pushed back and denied responsibility; the roofer who replaced the roof in 2016 canceled that warranty after the panels went on. In March the company removed the panels to inspect the roof and never put them back, leaving her without power from the system and with ongoing water damage. At 73 and living on Social Security, she cannot afford to replace the roof herself and feels targeted as a vulnerable senior. The,
Michelle C. signed a residential solar contract in May 2019 and ended up spending more than a year chasing a finished system. She watched the project inch forward: crews put panels on the roof in two days about a month before writing, but an engineering team handed the electrical contractor the wrong plans and a blame game began. While crews were on site she discovered the planned inverter/panel location was incorrect and flagged it, but communication then evaporated. When COVID arrived, the company emphasized safety protocols but otherwise stalled work and stopped returning calls; pre‑COVID in March they paused for two days of rain saying the utility wouldn’t come out, and then Michelle heard nothing. Frustrated, she pushed for action and finally got Edison out on June 3 for less than two hours, and the inspector showed up that day — essentially a two‑hour job that had taken months to schedule. Since that visit she has heard nothing: a staffer named Jeremy was supposed to come back to adjust two panels, but calls and promises never materialized, and she kept getting passed from one new contact to another as the company cut over 600 people. She discovered preliminary lien/claim
David G. began the HERO-financed rooftop solar process hopeful: he qualified, signed paperwork, and paid extra to get an all-black panel array for his $500,000 home after Horizon assured him the panels were approved by SunRun. He and his wife stressed one nonnegotiable detail to the salesperson — black panels only — and felt comfortable as Britta Richardson provided steady updates while the paperwork moved forward. On installation day, while David was at work, his wife called to say crews had started installing the wrong modules: the basic blue panels with white lines. Four of the planned 31 panels were already in place before the crew halted work and removed the modules, leaving brackets and new electrical boxes mounted to the roof. After that, the regular updates stopped; Horizon told him the black panels were a special order and would take time, and he only learned they’d arrived after he phoned Britta. Horizon then said SunRun approval was pending. When David called SunRun to check, supervisor Stephanie Carson joined a call with Mayra Vilareno and discovered Horizon hadn’t even submitted the approval request; Mayra promised to do so that day. While hanging Christmas lights a nd
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 32
Buyer Beware
Unauthorized Activities
1 report
Misleading Claims
6 reports
Background Check
Serving customers for 13 years
Among the longest-standing installers in the market.
BBB Rating
Not BBB rated.
Natural Review Patterns
Reviews were posted naturally over time.
What You Can Expect
In mid-2020 Thomas E. set out to get solar panels installed through Horizon Solar, part of the Sungevity family, and hit a rocky start: his Sungevity rep changed four times during the COVID-19 disruption before the account landed with Sherril Teller. He experienced frustration early on, but Sherril kept him informed about permitting and progress and handled several one-off requests smoothly. The permitting process remained a sore point — his city took about a month to approve rooftop panels — but beyond that the project moved as promised. Contractors arrived on time, completed quality work, and Sungevity honored the original quote. He ended up satisfied with Sungevity’s execution; the lasting impression was that, after initial personnel churn, a consistent point person plus punctual crews delivered the installation at the agreed price despite slow municipal permits.
Daniel S. chose this company for a residential solar install and had panels put on in December 2019. He expected a $1,000 incentive the company promised, but that payment never materialized. In January 2021 he opened an Edison bill for $1,114.24 that came as an unpleasant surprise. He encountered frustrating customer service — when he managed to reach a representative they offered excuses instead of answers. For Daniel, the combination of the missing $1,000 and the unexpected $1,114.24 utility charge became the decisive problems.
Gail F. signed up for residential solar with Horizon 13 months ago after being promised $750 in incentives — a $500 rebate and a $250 gift card. She still hasn't received the $500 rebate, and the $250 gift card only showed up after roughly ten phone calls. Several months ago a mechanic's lien for more than $8,000 was placed on her house because Horizon hadn’t paid the solar installers, and Horizon still hasn't paid those installers to get the lien removed. The bottom line: persistent follow-up yielded a partial payment, but an unresolved $8,000-plus lien and a missing rebate remain on her account.
Samuel I. hired Horizon Solar to add an efficient solar system to his home and worked directly with project lead Sherril Teller, who communicated effectively throughout the entire project. He appreciated the steady updates and clear answers that came at every stage, which made it easy to trust the company’s work. The single detail that defined the experience was Sherril’s consistent, responsive communication — it kept the process straightforward and delivered an efficient system for the house.
Keith D. bought (not leased) a solar system in 2011 and later ran into a tangle of warranty and corporate issues that made remedies difficult to pursue. He watched microinverters fail—a bad model from the manufacturer required many warranty replacements over the course of a year or two—and while the company replaced almost all of them after repeated callbacks, one inverter never got fixed and he encountered constant runaround. As more customers complained about unfulfilled contracts, he dug into public records and laid out where to look: search for "horizon solar power" in Riverside County’s document search (https://webselfservice.riversideacr.com/Web/search/DOCSEARCH313S7?docId=searchRowDOCCFBNAB-0000503581-1) and use the California Secretary of State bizfile search (https://bizfileonline.sos.ca.gov/search/business) for related filings. He identified the most recent corporate name as HOSOPO CORPORATION, registered in Delaware, and found that after terminating its California incorporation the company left an address for legal service: 340 Madison Ave, Suite 3, New York, NY 10173. The concrete takeaway he left prospective pursuers: those records and that address are the leads he was
Nayan bought a cash-paid solar system for his home and only after two years discovered it wasn’t producing enough power — his electric bill climbed to about $400. He learned that no one at Horizon had made him aware that he would be responsible for monitoring the system. Frustration mounted as calls and emails went unanswered; after he opened a repair ticket, an outside contractor finally called him 10 days later and scheduled an inspection 30 days after that. Reina West answered the phone and moved his complaint up the chain, but her intervention didn’t speed up a repair. Now he’s left with a poorly performing array, mounting utility bills, and an unanswered question: will Horizon reimburse the extra costs he’s been forced to pay?
Brad weathered a drawn-out installation because of COVID-19, but he found Justina Florez at Horizon Solar Power relentlessly on top of every permit and inspection. She kept him informed at each step, hustled to get the panels mounted quickly—just before the shutdown—and did the legwork to track down the right SDG&E and city contacts to move approvals across the finish line. Because of her persistence, the system cleared inspections and went live, leaving him with a truly "greener home" and a clear memory of how a single project manager pushed things forward when everything else stalled.
Tanner P. signed a rooftop solar contract with Horizon Solar Power (now doing business with SunRun) after a salesperson promised an easy out if the house ever sold — that the company would remove the equipment and free him from the agreement if the new owners didn’t want the panels. He admitted he should have had the contract reviewed, but he and his wife felt misled when that promise didn’t materialize. About a year into ownership he discovered his energy costs had actually risen by roughly $100 a month, leaving him paying more while still tied to the deal. The standout lesson from his experience: check exactly how transfers, removals and termination are written into the contract — Tanner ended up bound to terms he thought would be reversible when he sold the house.
Chris O. signed up for a system more than three years ago and discovered it never produced the output the contract promised. A salesperson had promised that if the array underperformed, the company would add panels to make up the shortfall; after the first year of low production he began disputing the numbers and has been fighting the company ever since. The installer continues to demand his loan payments but has not added panels or otherwise honored the performance guarantee. He came away convinced the original promise was false and that there are other installers charging far less who actually follow through. The detail that sticks: three years in, he’s still paying the loan for a system that hasn’t met its contract and the company hasn’t delivered the agreed fix.
Long-term Satisfaction
Long-term satisfaction for Horizon Solar Power drops to 1.1 ★ compared to early reviews. This decline is worse than 75% of installers we looked at.
Long-term reviews carry the most weight in our methodology because they are most representative of what you should be paying for: a system that will perform for years.