87
Trust
Score
WattBot

Underline Energy Concepts reviews

CALIFORNIA / INLAND EMPIRE
Underline Energy Concepts
239 Reviews • 1 Location 31,787 Data Points Processed

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The Verdict

Underline Energy Concepts delivers solid work, but communication gaps can derail the experience. We found 68 reviews describing smooth installations with courteous crews who vacuumed up roof nails and arrived on time, and one homeowner told us installers brought a portable toilet for a multi-day reroof so workers wouldn't track through the house. The post-install support stands out: 26 reviews describe proactive monitoring, with the company calling customers when a panel stops communicating before the homeowner even notices. One customer had a solar circuit breaker fail on a Friday evening five years after install; electricians arrived within hours, explained the fix, and reinforced the wiring for future safety. But we also uncovered a pattern of botched project handoffs. Three long reviews detail months-long permitting limbo, roofers who had to tear off and reinstall shingles twice because someone forgot to prep for solar brackets, and unannounced morning arrivals with zero advance warning. In one case, a roof leak appeared two weeks post-install, the owner threatened legal action over a negative review, and the customer paid out-of-pocket for a third-party inspection to prove the leak wasn't solar-related.

If you value long-term support over flawless logistics, Underline is a reasonable pick. Most crews leave your yard cleaner than they found it, and the monitoring team will catch inverter failures before you do. But if a project coordinator ghosts you for weeks or assigns three different reps without warning, you'll wish you'd paid more for a company that syncs calendars.

3 Stories That Stood Out

1. Yee Wah F.
Yelp | Jun 27, 2025 |

Yee Wah F. had Underline install a new roof and solar system several years ago, and recently encountered a failure in the line to the solar circuit breaker that had been part of that original installation. They called Underline late on a Friday, and Sal immediately dispatched a team of electricians to the house. James and Paco (Francisco) arrived on time, explained what had failed, walked through how they would fix and reinforce the circuit for future safety, and completed the repair in just over an hour. The crew stayed long enough to confirm everything was working properly, maintained a professional manner throughout, and left the homeowner feeling secure about the system. The clearest takeaway: a Friday-night call drew an on-time response that not only repaired the breaker quickly but also strengthened the installation years after the original job, showing Underline follows through on service.

2. Elizabeth S.
Yelp | May 7, 2023 |

Elizabeth picked Underline because their quote beat other local companies. She signed a contract in November and, by the second week of December, discovered the permits and paperwork were in order — only to find her file had been misplaced. After multiple calls and emails she finally reached someone who dug into the mistake, and an installation date landed in February. The install mostly wrapped up in a single day, but then the follow-up became chaotic: over the next four mornings different company representatives showed up unannounced between 7:00 and 7:30 a.m. to “finish” loose ends, without advance notice about how long they’d be on the property or what they would do. One worker was caught on the homeowner’s Ring camera urinating on the side yard. Another worker, arriving unexpectedly at 7 a.m., forged Elizabeth’s signature on a document for a city permit after she didn’t answer the door. Two weeks after the crew finished, two roof leaks appeared. Underline came out quickly to inspect, but then emailed a quote charging extra to fix the damage. Back-and-forth over responsibility followed; Elizabeth escalated the problem with the owner and, instead of resolving it, was met by,

Platforms Monitored

Yelp
192 Reviews · 1 Location
4.6/5
BBB
38 Reviews · 1 Location
4.8/5
Google
9 Reviews · 1 Location
5.0/5
SolarReviews
Tracking
N/A
EnergySage
Tracking
N/A

Performance by Work Type

SOLAR
SOLAR
Installation, permitting, and grid connection.
4.7/5
SERVICE
SERVICE
Repairs, maintenance, and ongoing system support.
4.9/5
ROOFING
ROOFING
Repair or replacement, before or after solar installation.
3.7/5
ELECTRICAL
ELECTRICAL
Panel upgrades and wiring for system readiness.
4.4/5
COMPLEX PROJECTS
COMPLEX PROJECTS
Multi-trade installations requiring co-ordination.
3.1/5
BATTERY
BATTERY
Energy storage for backup savings and independence.
5.0/5

How We Got To Trust Score 87

No Red Flags

Unauthorized Activities

Passed screening

We checked for:
Unauthorized charges
Undisclosed loans
Identity theft
Forged signatures
Fake contracts
Falsified permits

Misleading Claims

Passed screening

We checked for:
Bait & switch
Overstated savings
Hidden fees
Misrepresented specs
False performance
Misleading warranty

Background Check

Serving customers for 10 years

Operating longer than most installers in the market.

BBB Rating: A+

Excellent BBB standing. Strong complaint resolution.

Natural Review Patterns

Reviews were posted naturally over time.

What You Can Expect

01

1. Andra G.
Yelp | Jan 6, 2026 |

Andra came in with a 12-year-old solar system that needed attention, and what stood out most was how far the company went to help her sort it out. Instead of leaving her to puzzle through the problems alone, they answered questions clearly and kept the communication moving so well that the whole process felt unusually easy to trust. She left looking ahead to having a company monitor the system and handle whatever breaks down next, with a special thanks reserved for Michael for helping make that happen.

2. Yee Wah F.
Yelp | Jun 27, 2025 |

Yee Wah F. had Underline install a new roof and solar system several years ago, and recently encountered a failure in the line to the solar circuit breaker that had been part of that original installation. They called Underline late on a Friday, and Sal immediately dispatched a team of electricians to the house. James and Paco (Francisco) arrived on time, explained what had failed, walked through how they would fix and reinforce the circuit for future safety, and completed the repair in just over an hour. The crew stayed long enough to confirm everything was working properly, maintained a professional manner throughout, and left the homeowner feeling secure about the system. The clearest takeaway: a Friday-night call drew an on-time response that not only repaired the breaker quickly but also strengthened the installation years after the original job, showing Underline follows through on service.

3. Paul Saba
Google | Feb 14, 2025 |

Paul had put off solar for years, but Jesse Malone and Underline Energy turned that hesitation into a smooth install on his home. Jesse spent time breaking down the costs, the savings, and even how the utility company fits into the picture, so he understood what he was signing up for before anything got started. Once the crew arrived, the installation itself stood out as unusually polished: the workers were professional, the workmanship looked better than what he had seen at friends’ homes, and even the required labels and placards were handled with care, using engraved signs instead of stickers and matching the paint so the system blended in cleanly. The experience kept getting stronger after the panels were up. When he later needed an upgrade, service improved again, and a separate issue with So Cal Edison revealed just how attentive the company was. A power surge had knocked his system offline without his realizing it, but Underline reached out on its own, alerted him before he could lose a full billing cycle of solar production, and worked to help sort it out. That kind of follow-through after installation left him especially impressed.

02

1. Chad M
BBB | Apr 30, 2025 |

Chad M chose this company for a home solar installation, and five years later he still has a system that performs perfectly. When one panel failed they spotted the problem, came out immediately and replaced it at no charge; other minor issues over the years have been handled the same way — quickly and free of cost. He appreciated their clear communication, punctual crews and speedy completion of work. What stood out most was the ongoing responsiveness and warranty follow-through: prompt, no-cost fixes years after installation gave him real confidence in the choice.

2. Kristen E
BBB | Apr 3, 2025 |

Kristen chose Underline for a residential solar system in 2020 and has kept it running with them ever since. From the original install through ongoing system monitoring, she found the team consistently responsive and easy to reach whenever a question came up. What set the experience apart was their proactive monitoring: Underline contacts her when the system stops talking to their servers instead of waiting for the homeowner to notice. Today a technician called after spotting a communication drop and patiently walked her through the steps to get the system back online. The hands-on troubleshooting and prompt outreach are the concrete details that made her glad she went with Underline.

3. Garett B
BBB | Feb 12, 2025 |

Garett B had solar installed on his home just over five years ago, and the system has run flawlessly ever since. When he finally reached out for a network upgrade, the team treated the request like a priority. His installation tech was friendly, courteous, and quick to return calls; he even squeezed Garett into the schedule sooner than expected and completed the upgrade efficiently and professionally. The most distinctive detail: the company followed through years after the initial install, offering attentive, timely service on a single service call just as they did at the start. He walked away reassured that support doesn’t stop after installation — they still fit him in fast and finished the job right.

03

1. Ennis Z.
Yelp | Oct 19, 2024 |

Ennis chose the company to install solar thermal panels for his backyard pool and found their upfront pricing and service competitively priced. About a year after installation, when the system developed a fault, he called them and they came back quickly to diagnose and resolve the issue. He appreciated their straightforward, dependable approach — the fast follow-up after a year proved they weren’t just focused on the sale but on standing behind their work. What stuck with him was the prompt return visit and repair, a concrete sign that choosing a reputable installer paid off.

2. John G
BBB | Oct 3, 2024 |

John has had solar panels on his home for a little over a year and has seen a significant drop in his energy bills. During that time he ran into a few different equipment failures, but Underline tracked down each issue quickly and got the system back up and running every time. What stuck with him was their fast, dependable troubleshooting — minimal downtime even when something went wrong.

3. James F.
Yelp | Sep 14, 2024 |

James had Underline install a 10-panel rooftop system in 2018 and then expand it with six more panels in 2022; both jobs finished on schedule and without issues. He noticed the company keeps a close watch on system performance — their monitoring flagged a small irregularity recently, and they dispatched a technician quickly. The tech performed a thorough inspection, confirmed the array was operating properly, and took time to walk him through the app monitor so he could interpret the data himself. What stood out was the proactive follow-up and the technician’s patience explaining the app, leaving him confident the system is both well-installed and actively cared for.

Long-term Satisfaction

Long-term satisfaction for Underline Energy Concepts drops to 4.4 ★ compared to early reviews. This is better than 49% 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.

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