94
Trust
Score
WattBot

Nabu Energy reviews

CALIFORNIA / EAST BAY
Nabu Energy
165 Reviews • 1 Location 21,945 Data Points Processed

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The Verdict

Nabu Energy excels at the technical consultation that most installers rush. We found 87 reviews praising transparent, no-pressure sales, nearly all singling out engineer-level explanations of panel specs, inverter trade-offs, and permit timelines without the hard sell. One homeowner noted the team spent hours on the phone diagnosing a monitoring issue for free, trying to avoid a costly site visit. Another described receiving three system-sizing options tailored to current and future needs, with color-matched conduit and zero fastening issues on a 36-year-old tile roof. Workmanship earned a 4.8 score, driven by 73 positive mentions of neat installs, quality hardware, and attention to finish details like painting roof attachments to blend with exteriors. The main trade-off is responsiveness. We noticed 17 complaints about project-management gaps: missed appointments, weeks-long silences, and one install that stretched to six months instead of the promised three. If you want an installer who'll explain why a specific inverter model suits your roof angle and won't upsell you on oversized systems, the occasional communication lag is the price of working with a small, technically focused crew.

If you prioritize technical depth and honest system sizing over white-glove project updates, Nabu Energy delivers. Expect engineering-led consultations and skilled install work, but budget extra time for permit coordination and plan to follow up yourself if a week passes without word.

3 Stories That Stood Out

1. Michael Morgan
Google | Sep 21, 2025 |

On his tri-level, 36-year-old tile-roof home, Michael Morgan hired Nabu Energy to install 27 solar panels and two Tesla Powerwalls, and the whole process moved smoothly from first contact to long-term performance. Right away he noticed a different approach: engineers walked him through options patiently, no high-pressure pitch, and they offered three well-considered system proposals that matched both current use and future plans. He chose Nabu because the contract felt transparent and the team prioritized his interests. After signing, he scheduled a design review over Zoom where the installers methodically went through the proposal and answered every question. Nabu coordinated equipment deliveries in advance, everything arrived on schedule, and the installation crew showed up punctual, respectful, and highly skilled. The workmanship stood out in small, visible ways — conduits were color-matched to the roof tiles and house exterior — and in bigger technical respects: they fastened the array securely to an aging tile roof without a single issue. Ten months after activation the system has performed exactly as estimated; production numbers have been spot-on and the array, including the

2. Joseph C.
Yelp | May 14, 2022 |

When Joseph C. decided to install a solar array and battery backup on his home, he spent more than two weeks researching options and walked into his initial conversation with Harsh ready to test the sales pitch. He found Harsh unusually straightforward — clear guidance on panel and battery choices that matched what Joseph had learned independently, which let him trust Nabu Energy to move forward. The installation ended up delivering exactly what he wanted: panels producing strong energy output and a battery backup that works flawlessly. The path wasn’t smooth — Nabu Energy operates like a small, price-competitive shop and that showed in thin support staff and spotty communication — and supply-chain delays stretched the project out by months. Still, the equipment was high-end and the crew did excellent work; Jose, the foreman, earned special praise for how well he managed the site. The practical takeaway Joseph leaves prospective buyers with is concrete: expect very competitive pricing and top-tier hardware, but be prepared to trade off polished communication and a fast timeline for that value.

Platforms Monitored

Yelp
115 Reviews · 1 Location
4.7/5
Google
50 Reviews · 1 Location
4.6/5
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
BATTERY
BATTERY
Energy storage for backup savings and independence.
4.9/5
ROOFING
ROOFING
Repair or replacement, before or after solar installation.
5.0/5
COMPLEX PROJECTS
COMPLEX PROJECTS
Multi-trade installations requiring co-ordination.
5.0/5
ELECTRICAL
ELECTRICAL
Panel upgrades and wiring for system readiness.
5.0/5
SERVICE
SERVICE
Repairs, maintenance, and ongoing system support.
N/A

How We Got To Trust Score 94

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 5 years

Newer 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. ManoaCt Steve
Google | Mar 3, 2026 |

A couple of years ago, Steve had Nabu Energy install a solar-and-battery setup on his home, and the project finished later than planned because of parts shortages and permit delays. Even with that holdup, the installation itself came out solid, and the system has kept running reliably ever since. What really set the experience apart came last year, when one component failed: Nabu Energy quickly sent a technician out to the house, pinpointed the defective part, and worked directly with the manufacturer to get it replaced under warranty. He ended up with the kind of follow-through that matters long after the panels are on the roof, especially when a company handles a repair without passing the hassle back to the homeowner.

2. Regan Fong
Google | Feb 1, 2026 |

Regan approached adding solar to her home like a careful shopper, collecting multiple bids before choosing Nabu Energy for the combination of price, equipment, and professionalism. She ended up with solar panels, a SolarEdge inverter, and an LG battery, then waited a few years before judging the result so she could see what the real PG&E true-up would look like. The payoff has been steady: since installation, she has been getting roughly a $500 refund each year. What stood out most was how smoothly the whole project ran in her own home. From the first consultation through the final install, the crew handled the job with clear explanations, regular updates, and a respectful approach to her space, and the finished panels still look sharp while performing exactly as promised.

3. Gregory Musachia
Google | Sep 19, 2024 |

In 2022 Gregory chose Nabu Energy to install new solar panels on his home. He found their pricing competitive and the installation neat and professional. The crew treated his property with care, giving advance notice and knocking on the door before coming onto the premises to make sure he was home. He walked away very satisfied and still remembers that small, respectful habit of announcing themselves as the most reassuring part of the experience.

02

1. Ann Yushan Hsu
Google | Mar 4, 2026 |

Three years after Nabu Energy installed a solar system for Ann Yushan Hsu, it was still running smoothly and efficiently with no problems. She came away impressed by a team that stayed professional, knew the product well, and answered questions quickly from start to finish. The install finished on schedule, and the whole setup was explained clearly enough that she never felt left guessing about how it would work.

2. Mark
Google | Feb 23, 2026 |

Mark ended up with a solar system from Nabu that has run flawlessly for a couple of years on his home, the kind of outcome that only really matters after the install is long finished and the equipment is still quietly doing its job. What stood out most was the staying power: after the crew left, the system kept delivering without a hiccup, year after year, leaving him with a roofline that has been powering the house reliably ever since.

3. Kaushik R.
Yelp | Apr 19, 2022 |

Kaushik R. hired the company a couple of years ago to install solar panels on his home. He found the whole process surprisingly smooth—from scheduling to final hookup—and the team finished the project on the agreed timeline. Even now, he highlights the on-time completion as the standout part of the experience.

03

1. Deepak S.
Yelp | Feb 27, 2022 |

Deepak S. had a 6.03 kW solar system installed on his home that became operational in 2019. The installation moved smoothly: Will, the installer, coordinated with roofers and completed the panel mounting on schedule, and a roof specialist reviewed the work and confirmed its quality. In late 2020 the SolarEdge inverter failed; Deepak notified Nabu Energy, who quickly engaged SolarEdge, arranged a replacement inverter to be shipped, and Will helped fit the new unit. The system was back online within a month. The most memorable detail was the fast, hands-on follow-up—Will stayed involved from the original install through the inverter swap, delivering a quick turnaround when the system needed service.

2. Eunsuk K.
Yelp | May 13, 2021 |

Eunsuk K. had been running a modest 2.7 kW array installed in 2015 and decided to add capacity rather than replace everything. They hesitated at first because Nabu Energy still has relatively few reviews—something a young company often faces—but Harsh (sometimes listed as Keith) showed up the very next day, sized up the job, and patiently answered a long list of questions. Nabu combined the old and new systems using Solaria 400 W panels and delivered tidy, thoughtful workmanship: rails and the inverter console were even painted to blend with the roof and walls. Will, the engineer on site, handled the installation confidently and stayed easy to work with. The price landed competitively, but the memorable part wasn’t the cost so much as the up-to-date panel choice, the system pairing, and the attention to small finishing details. One hiccup: the team is busy enough that Nabu didn’t send a bill on time, so Eunsuk had to prompt them about a balance. The first project is complete and another is already scheduled; what will stick with them is the next-day visit from Harsh and the paint-matched hardware that made the addition look like it belonged.

3. Hank C.
Yelp | Apr 4, 2026 |

Hank got his system installed in 2022, just ahead of California’s NEM 2.0 deadline, and the timing proved to be a smart move. From the first consultation through final activation, the process felt smooth and well handled, and the payoff showed up quickly in much lower energy bills. Even now, the system is still running without issues, giving him the kind of long-term reliability that matters most once the panels are on the roof.

Long-term Satisfaction

Long-term satisfaction for Nabu Energy holds steady at 4.9 ★. This is better than 80% 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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