Nippon Energy reviews
• last updated FEB 26, 2026Loading map...
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.
Reviews That Shaped Our Verdict
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.
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.
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
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 92
Clean Record
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
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.
Licensed Contractor
A valid contractor license is on record.
What You Can Expect
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.
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
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.