92
Trust
Score
WattBot

Nippon Energy reviews

NATIONAL
Nippon Energy
61 Reviews • 1 Location 8,113 Data Points Processed

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The Verdict

Nippon Energy earned one of the strongest post-sale support scores we've seen. One customer shared how Navin kept answering questions a full year after installation, even during evening hours. Another mentioned that the owner personally called to apologize for a minor issue before the crew had even finished work. We found 31 reviews praising their follow-up responsiveness, with only 2 complaints. Most installers disappear after signing the contract, but reviewers here report the opposite experience: Linda picks up calls on weekends, Naveen solved permitting tangles within days, and Shawn stayed available through utility company delays that dragged on for months. The no-pressure sales process stood out just as much. Shawn met one couple, walked through the numbers with zero fluff, then told them to sleep on it. (One reviewer who didn't even buy still left five stars because Linda helped identify a permitting nightmare that would've cost them thousands.) If you want an installer who'll still pick up the phone when your utility company sends a confusing bill six months later, the track record here is hard to beat.

If you want the lowest bid in town, keep shopping. But if you want a sales rep who'll tell you not to buy solar when your roof has hidden permit issues, and an owner who calls to apologize for delays outside his control, Nippon Energy delivers that rare combination of honest advice and accountable follow-through.

3 Stories That Stood Out

1. Bruce K.
Yelp | Jul 30, 2017 |

Bruce discovered that his rooftop solar system, installed in May 2016, virtually erased his electric bill: his first-year true-up with SDG&E came to just $73.65. He ended up producing 96.5% of his household electricity over that year despite an unusually rainy season and a roughly 10% increase in his usage compared with the prior year. He chose a 4.76 kW (4.00 kW AC) array of American-made panels paired with American micro-inverters, with roughly half the panels facing E/SE and the rest W/NW. Production feeds into a mobile app that updates within about 30 minutes of real time, so he can watch output throughout the day. Installation moved quickly through engineering and permitting, and the crew left the roof and yard clean. A few bumps with permits, the utility company and the inspector occurred during the process, but those delays traced to outside parties rather than the installer. Navin stood out as the salesperson/point person: he answered questions promptly — often in the evenings — stayed available more than a year after install, knew the product lineup, and worked to avoid surprise charges that sometimes come from larger competitors. Pricing felt competitive, and the firm

2. monique g.
Yelp | Sep 28, 2025 |

Monique G. handed out five stars after deciding not to move forward with Nippon for a home solar installation. She worked with Linda, who patiently walked her through the options, answered detailed technical questions, and stayed easy to reach — never pushing a sale. Linda’s clear explanations helped Monique do deeper research and conclude that Nippon’s equipment and offers were solid, but the turning point came when Linda flagged a permitting problem with the house. That discovery would have turned installation into a tangled, costly ordeal, so they chose to stop the project. Monique walked away grateful that Linda prioritized honesty and education over closing a deal — the permitting flag saved her from a major headache.

3. Sandeep K.
Yelp | Mar 1, 2023 |

Sandeep K. signed up for a solar install and quickly discovered the company’s customer care kept working long after the contract was signed. He relied on Linda throughout the process; she answered his calls consistently — even on weekends — and stayed professional and responsive when most contractors would stop picking up. The team scheduled the job fast, getting him on the calendar in about 23 days. During installation a couple of issues popped up, and Naveen stepped in to sort them out quickly and effectively. What stayed with him was the combination of Linda’s nonstop availability and Naveen’s prompt problem‑solving, resulting in a smooth, 23‑day turnaround with the remaining snags resolved.

Platforms Monitored

Yelp
31 Reviews · 2 Locations
5.0/5
Google
30 Reviews · 1 Location
4.7/5
SolarReviews
Tracking
N/A
EnergySage
Tracking
N/A
BBB
Tracking
N/A

Performance by Work Type

SOLAR
SOLAR
Installation, permitting, and grid connection.
4.9/5
SERVICE
SERVICE
Repairs, maintenance, and ongoing system support.
3.8/5
ROOFING
ROOFING
Repair or replacement, before or after solar installation.
5.0/5
BATTERY
BATTERY
Energy storage for backup savings and independence.
5.0/5
ELECTRICAL
ELECTRICAL
Panel upgrades and wiring for system readiness.
N/A
COMPLEX PROJECTS
COMPLEX PROJECTS
Multi-trade installations requiring co-ordination.
N/A

How We Got To Trust Score 92

Clean Record

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 13 years

Among the longest-standing 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. Tom Schneider
Google | Aug 25, 2018 |

Tom reconnected with Shawn — the same salesperson who handled his solar install about five years earlier — and found Shawn fantastic again. The company kept him updated at every step of the process, and when a minor issue surfaced the owner phoned personally to apologize, a level of attention that stood out. The installation finished smoothly, and he now sees lower monthly bills from the system. The detail that sticks: the owner’s personal call over a small problem, combined with real monthly savings.

2. Bruce K.
Yelp | Jul 30, 2017 |

Bruce discovered that his rooftop solar system, installed in May 2016, virtually erased his electric bill: his first-year true-up with SDG&E came to just $73.65. He ended up producing 96.5% of his household electricity over that year despite an unusually rainy season and a roughly 10% increase in his usage compared with the prior year. He chose a 4.76 kW (4.00 kW AC) array of American-made panels paired with American micro-inverters, with roughly half the panels facing E/SE and the rest W/NW. Production feeds into a mobile app that updates within about 30 minutes of real time, so he can watch output throughout the day. Installation moved quickly through engineering and permitting, and the crew left the roof and yard clean. A few bumps with permits, the utility company and the inspector occurred during the process, but those delays traced to outside parties rather than the installer. Navin stood out as the salesperson/point person: he answered questions promptly — often in the evenings — stayed available more than a year after install, knew the product lineup, and worked to avoid surprise charges that sometimes come from larger competitors. Pricing felt competitive, and the firm

3. Eric B
Google | Apr 2, 2024 |

Eric B opted for Nippon Solar to outfit his home with solar and ended up with a very positive experience. He found the sales rep, Linda, deeply knowledgeable during the whole process and appreciated that she remained available to handle any questions after the installation was finished. That ongoing, post-installation support is what mattered most to him and is the concrete reason he felt comfortable recommending Nippon Solar to others.

02

1. Thomas G.
Yelp | Sep 5, 2023 |

Thomas G. moved forward with a home solar install and discovered a smooth, hands-on process. He found Linda especially proactive, staying ahead of scheduling and logistics, and the final price came in noticeably lower than Sunrun. Before crews mounted the panels, the company arranged a re-roof at a reasonable cost so the installation wouldn’t be delayed. After the array was up, Naveen stepped in and quickly cleared a couple of permitting hiccups. The detail that stuck with him: the team not only beat the big-name pricing but also coordinated roof replacement and handled post-install permitting, keeping the project on track.

2. Sandeep K.
Yelp | Mar 1, 2023 |

Sandeep K. signed up for a solar install and quickly discovered the company’s customer care kept working long after the contract was signed. He relied on Linda throughout the process; she answered his calls consistently — even on weekends — and stayed professional and responsive when most contractors would stop picking up. The team scheduled the job fast, getting him on the calendar in about 23 days. During installation a couple of issues popped up, and Naveen stepped in to sort them out quickly and effectively. What stayed with him was the combination of Linda’s nonstop availability and Naveen’s prompt problem‑solving, resulting in a smooth, 23‑day turnaround with the remaining snags resolved.

3. Jerry R.
Yelp | Feb 8, 2023 |

Jerry R. admits he’s not usually a reviewer, but after shopping around and getting hit with inflated offers from big-name firms he kept looking. He found Nippon, who gave a straightforward, down-to-earth quote on the first visit, and he ended up with panels installed on his roof. Nippon walked him through activation and handled the SCE paperwork, so the system got hooked up without extra headaches — a fair price and a smooth finish left him very satisfied.

03

1. David J.
Yelp | Nov 13, 2021 |

David J. ended up with nearly zero electric bills after installing solar with Nippon Energy — his September and October statements were $43 and $0, aside from Edison charges of about $12 a month. He had been reluctant to go solar after hearing so much negativity, but after doing his own homework he invited Nippon Energy to assess his home. He spoke with Navin multiple times and stayed in constant email contact, and that hands-on communication smoothed the process. He discovered a few financing paths: a low-interest 25-year option that requires paying points, a higher-interest plan that’s better if you can pay it off sooner, and, if affordable, buying the system outright. Before the install his electric bills ran $115–$350 a month depending on season; the dramatic drop in recent bills is the practical payoff. He keeps those September and October bills — $43 and $0 — as the clearest proof that the combination of Navin’s responsiveness and the right financing choice made the switch worthwhile.

2. L.A. I.
Yelp | Jul 15, 2021 |

L.A. I. watched Nippon Engery complete a tidy installation and ended up with a system that now produces enough electricity to meet their household needs. They found the crew very communicative, answered every question, and secured what they considered the best financing deal. Over the first summer they could set the thermostat and forget it, letting the system handle comfort without constant adjustments. They plan to return to Nippon Engery to add an electric-car charger and a battery bank so the home will stay powered through blackouts.

3. Joshua S.
Yelp | Jan 6, 2021 |

Joshua S. shopped around and landed on Nippon Energy for a rooftop solar system after comparing prices and other reviewers. He discovered Navin offered a competitive quote, tailored the system to the household’s needs, and never pushed for a quick decision — a welcome change after doing a lot of research. The job turned out to be more complicated than a standard install: the roof uses metal tiles that required a retrofit, and the home needed a new electrical panel. Navin’s crew handled the electrical work cleanly, stayed communicative through every step, and maintained professional COVID precautions — everyone wore masks. Navin personally navigated the City of Pasadena permitting process, and once the permits were in place the crew moved quickly to get the system up and running. The project finished successfully, and what stands out is that Nippon managed the tricky roof retrofit, panel replacement and local permitting without drama — a concrete signal that they can handle complicated installs from start to finish.

Long-term Satisfaction

Recent customers rate Nippon Energy 4.9 ★

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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