Best solar companies California Ongaro & Sons

Ongaro & Sons Reviews

Based in Petaluma, CA. This profile is built from public installation records and published ratings, not paid placement.

55verified installs in California utility records*
42recent installs, 2025-26 records*
2024first year in county records
8.0/10Solar.com Score · 1,493 reviews analyzed

Solar.com Installer Score for Ongaro & Sons

One score, computed the same way for every installer. We read the full text of all 1,493 substantive published Ongaro & Sons review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.0/10

Synthesized from 1,493 substantive customer review texts (1,988 published reviews collected).

Google 4.8★ · 1,988 reviews

Updated September 28, 2026 · No installer can pay to change this score · How scores work →

Read what customers actually say ↓
Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.7.2

109 reviews speak to this · 93 praise · 14 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.5.0

80 reviews speak to this · 39 praise · 39 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.7.5

289 reviews speak to this · 255 praise · 33 complaints

Timeline ReliabilityHow well the company manages the path from contract through permits, installation, inspection, and turn-on — without the customer having to chase it.7.0

95 reviews speak to this · 80 praise · 14 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.7

446 reviews speak to this · 426 praise · 19 complaints

Long-Term SupportHow well the system performs after turn-on, how the company handles monitoring, warranty claims, and service calls — and its staying power to honor them.7.2

101 reviews speak to this · 88 praise · 12 complaints

#350 of 678 scored in California by Solar.com Installer Score

How does Ongaro & Sons compare where you live? Rankings are local; an installer that leads one city can trail in the next. See how they rank in your city →

Why this differs from star ratings: most five-star reviews say “great company” and stop, and star averages reward that. These category scores only count reviews with concrete evidence, weighted by recency and the reviewer’s track record. A company can hold a strong star average while specific categories score lower; that gap is usually where the real story is. Categories with more complaints than praise are the questions worth asking any bidder, not necessarily dealbreakers.

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Where Ongaro & Sons builds

County-by-county activity from CPUC records through May 2026.

What this data covers: *Counts on this page, including the totals up top, come from investor-owned-utility interconnection records (SCE, SDG&E, PG&E). Work in municipal-utility territory, such as LADWP or city utilities, and outside California does not appear here, so this company's true totals are higher than shown. Unlike the county rankings, this profile also shows counties below the 250-install ranking floor.

CountyVerified installsRecent 2025-26Active sinceMedian system% leasedCounty rankingLink to the county ranking page. This company's rank on this page is its Solar.com Installer Score rank, shown above.
Sonoma County322420245.4 kW0.0%below ranking floor (under 250 installs)
Marin County231820246.2 kW0.0%below ranking floor (under 250 installs)

% leased counts systems recorded as third party owned (lease or power purchase agreement); the remainder are customer owned. Median system size is the middle system this company installed in that county. Star ratings and review counts are from Google.

Ongaro & Sons reviews: what customers say

An independent synthesis of published customer feedback, updated September 28, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity7.2/10

Reviewers most often describe the sales and proposal process as knowledgeable, clear, and helpful, with staff taking time to explain options and answer questions. Complaints are present but less common, and they tend to focus on pricing perceptions, add-on recommendations, or expectations about what was needed.Solar.com's composite of published customer feedback, not a customer quote

Clear explanations. Many reviewers say the sales team explained the work and options in a straightforward way that helped them understand the proposal before moving forward. Representative review excerpt: "He answered all my questions, and explained everything in a way I could easily understand."

Helpful and courteous visits. Customers also describe quote visits as considerate and professional, with staff taking time to walk through the job and keep them informed. Representative review excerpt: "They were courteous, took their time to make sure everything was done properly, the lead kept the owner informed of every process that was going to be done, the work..."

Pricing and scope concerns. Some reviewers report concerns about whether certain add-ons or recommended items were necessary, or felt the quoted approach was too expensive. Representative review excerpt: "Unfortunately, Ongaro sales person sold me an expensive thermostat (over $325) saying that it was needed for my two state new furnace."

Price & financing transparency

Price Transparency5.0/10

Feedback on pricing and financing is mixed to negative overall. While some reviewers describe estimates as fair or well organized, a substantial share report concerns about high cost, unexpected charges, refund or payment friction, and timing issues tied to incentives or utility steps.Solar.com's composite of published customer feedback, not a customer quote

Clear or fair estimates. Some customers say the estimate process felt organized and reasonably priced, with pricing that was easy to understand upfront. Representative review excerpt: "I found their plumbing estimate to be better organized and lower cost than another of our big local firms."

Cost felt high. Other reviewers describe the job as costly or say individual services and parts felt overpriced relative to their expectations. Representative review excerpt: "Their price for basic electrical services was easily $100 more than a half a dozen other electricians I had consulted with, poor customer service."

Payment and timing friction. A number of comments point to concerns about paying before work was complete or waiting through permitting and utility-related timing after the initial visit. Representative review excerpt: "I feel that since we have already paid for a job they didn't complete that we would have priority in getting the job done so we can get home on..."

Communication & coordination

Communication7.5/10

Most reviewers describe communication as responsive, professional, and organized, especially during scheduling and day-of coordination. The main complaints involve slow callbacks, difficulty reaching the right team, or handoff issues between departments or scheduling steps.Solar.com's composite of published customer feedback, not a customer quote

Responsive and professional. Customers frequently say the office and field teams answered questions quickly and kept them informed throughout the project. Representative review excerpt: "They take the time to explain everything step by step, which has made me feel informed and in control of the work being done and the scope of the project."

Step-by-step guidance. Reviewers also appreciate when staff explain the process clearly enough to make them feel informed and in control of the work. Representative review excerpt: "They take the time to explain everything step by step, which has made me feel informed and in control of the work being done and the scope of the project."

Reachability issues. Some reviewers report trouble getting routed to the right person or waiting too long for responses when coordinating service. Representative review excerpt: "They have an AI "receptionist" who will not route your call to anyone, it took a week to get responses from the various teams (HVAC and electrical are separate silos)..."

Timeline reliability

Timeline Reliability7.0/10

Timeline feedback is generally positive, with many reviewers reporting prompt scheduling, on-time arrivals, and efficient completion. Still, a smaller set of comments describes permit delays, missed appointment windows, or longer waits than expected for activation steps.Solar.com's composite of published customer feedback, not a customer quote

On-time service. Many customers say appointments started when promised and work moved quickly once scheduled. Representative review excerpt: "Chris called to say he was running ahead of schedule, and then showed up at the house right when they said they would."

Fast completion. Some reviewers describe installations or repairs being completed within a short window, including quick turnaround when timing mattered. Representative review excerpt: "We got a competitive price quote and they were able to install two days later, all during our December cold weather."

Permit and activation delays. A smaller group notes longer waits tied to permits, inspections, or utility scheduling, which pushed projects past the expected timeline. Representative review excerpt: "We needed an electrical panel replacement and after the initial visit, it took about 6 weeks to get the permits and an appointment with PG&E."

Workmanship & site care

Workmanship8.7/10

Workmanship is a clear strength in the review corpus. Most reviewers praise careful installation, professional crews, and cleanup, while the smaller set of complaints centers on damage, mess, or jobs that needed follow-up correction.Solar.com's composite of published customer feedback, not a customer quote

Professional installation. Reviewers often describe the crews as professional and the final jobsite as clean and orderly. Representative review excerpt: "Ongaro & Sons was very professional from estimate to final clean up."

Careful workmanship. Customers also mention technicians taking their time to do the work properly and leaving the property in good condition. Representative review excerpt: "They were professional, left my yard just as they found it and were kind to my dog."

Damage or cleanup concerns. A minority of comments report site-care problems, including damage or messy work that customers felt should have been handled more carefully. Representative review excerpt: "Especially for the cost - I feel like there could be just better basic care taken to be less destructive / messy - or to clean up afterward."

Long-term support & performance

Long-Term Support7.2/10

Post-install support is mostly described positively, with many reviewers saying technicians returned helpful follow-up, diagnosed issues effectively, and confirmed systems were working properly. The main watch-outs involve repairs that did not fully resolve the issue, warranty coverage disagreements, or difficulty arranging another service visit.Solar.com's composite of published customer feedback, not a customer quote

Effective follow-up help. Some reviewers say technicians quickly diagnosed problems, corrected them, and checked for other issues before leaving. Representative review excerpt: "He quickly analyzed and corrected my equipment failure then checked for other potential problems, recommending ways to improve my AC and Heating equipment."

System verified after service. Customers also note technicians staying long enough to make sure equipment was operating correctly after the repair or installation. Representative review excerpt: "Chris then waited for a while to make sure the machine was working correctly and heating up the house."

Warranty and repeat-service concerns. A smaller set of comments describe lingering problems after service or frustration with whether follow-up work was covered. Representative review excerpt: "Upon calling them back they told me this was not covered by warranty and that I’d have to pay for another service."

Bottom line: ONGARO & SONS earns a strong overall score, with especially positive feedback on workmanship and generally solid marks for communication, sales clarity, and post-install support. The clearest area of mixed sentiment is price and financing transparency, where reviewers are split between fair estimates and concerns about cost, payment handling, or timing-related friction.

How this is built: category scores and summaries weigh the company's full published rating record (760 Google reviews averaging 4.9 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.

About Ongaro & Sons

Company background from published business information and licensing records.

Products

Solar

Service area

California. Note: the install counts on this page cover California investor-owned-utility records only.

Work for this company or see something out of date? Profiles can be claimed and corrected: contact partners@solar.com. Placement on solar.com is never for sale.

Recorded installs by year

Residential interconnections statewide in PG&E, SCE, and SDG&E records through May 2026.
13
2024
31
'25
12
'26

Important context: this chart shows investor-owned-utility records only. Companies that shift work toward municipal-utility territory (LADWP and city power departments) or other states will show declining bars here even while building steadily elsewhere, and 2025-26 records also lag real installation dates. Treat this as a partial window, not the company's full trajectory.

FAQ about Ongaro & Sons

What do customers say in Ongaro & Sons reviews?

We analyzed 1,493 substantive published customer reviews of Ongaro & Sons in full. The company's Solar.com Installer Score is 8.0/10, with category-level detail on this page covering sales integrity, price transparency, communication, timeline reliability, workmanship, and long-term support.

How many solar systems has Ongaro & Sons installed?

Ongaro & Sons appears as installer of record on 55+ residential systems in California investor-owned-utility interconnection records through May 2026. Work in municipal-utility territory or other states does not appear in those public records.

How can I compare Ongaro & Sons' pricing?

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How we built this data

Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.

Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.