Best solar companies California Ambrose Solar

Ambrose Solar Reviews

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

4,112verified installs in California utility records*
611recent installs, 2025-26 records*
2017first year in county records
8.8/10Solar.com Score · 566 reviews analyzed

Solar.com Installer Score for Ambrose Solar

One score, computed the same way for every installer. We read the full text of all 566 substantive published Ambrose Solar review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.8/10

Blends the six category scores (70%) with the recency-weighted star record (30%).

Synthesized from 566 substantive customer review texts (573 published reviews collected).

Google 4.9★ · 293 reviewsYelp 4.7★ · 280 reviews

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

Read what customers actually say ↓
Review star recordRecency-weighted star ratings across platforms, converted to a 0-10 signal before it is blended into the headline Solar.com Score.10.0

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.8.1

221 reviews speak to this · 206 praise · 15 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.7.0

73 reviews speak to this · 61 praise · 12 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.8.9

401 reviews speak to this · 376 praise · 25 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.7.7

204 reviews speak to this · 182 praise · 17 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.9.0

300 reviews speak to this · 286 praise · 14 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.9.0

230 reviews speak to this · 210 praise · 18 complaints

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

How does Ambrose Solar 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 Ambrose Solar 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.
Solano County2,38629820177.9 kW0.2%See county ranking →
Contra Costa County64311720178.0 kW0.2%See county ranking →
Yolo County3264820177.7 kW0.0%See county ranking →
Napa County2583720188.0 kW0.0%See county ranking →
Marin County1141220198.8 kW0.0%below ranking floor (under 250 installs)
Alameda County1061720197.3 kW0.0%below ranking floor (under 250 installs)
Placer County1043020199.5 kW1.0%below ranking floor (under 250 installs)
Sonoma County882020187.7 kW0.0%below ranking floor (under 250 installs)
San Joaquin County285201710.1 kW3.6%below ranking floor (under 250 installs)
Sutter County23720199.7 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.

Ambrose Solar reviews: what customers say

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

Sales & proposal integrity

Sales Integrity8.1/10

Reviewers most often describe Ambrose Solar’s sales process as knowledgeable, straightforward, and low-pressure, with several saying the proposal and expectations were handled clearly. The main complaints are concentrated around missed follow-up, pressure, and some cases where reviewers felt the sales process did not stay organized through the close.Solar.com's composite of published customer feedback, not a customer quote

Clear, knowledgeable sales experience. Many reviewers say the sales team communicated product and proposal details well and gave them confidence in the decision. Some also mention careful handling of home or project details during the planning stage. Representative review excerpt: "We talked to SunRun, Save a Lot and Semper Solaris and ended up going with Ambrose based on Knowledge of salesman, Price, Experience in the industry, Reputation, Product choices, Reviews..."

Straightforward, low-pressure guidance. Several customers describe the sales conversation as friendly and honest, with an emphasis on getting a clear answer about system needs and future usage. These reviews suggest the proposal process often felt transparent rather than pushy. Representative review excerpt: "If I were to get an EV car or increase my electricity usage, I would call up Paul with complete confidence that I'd be given the straight story on what..."

Follow-up and handoff issues. A smaller set of reviewers report dropped balls during sales follow-up or difficulty getting a new contact, and some describe the process as becoming frustrating near contract time. These comments are less common than the praise but are part of the review pattern. Representative review excerpt: "The sales person continued to drop the ball and because of a PUC rate grandfathering, we had to get the contract signed."

Price & financing transparency

Price Transparency7.0/10

Reviewers frequently say Ambrose Solar’s pricing and financing were reasonable or understandable, and some mention feeling reassured by the value offered. At the same time, this category has a noticeable complaint pattern around refunds, surprise costs, and financing or payment issues, so the experience is not uniformly positive.Solar.com's composite of published customer feedback, not a customer quote

Reasonable pricing for many customers. Several reviewers say the company’s pricing felt fair and that the overall value matched the service they received. Some also mention financing options in a positive way when describing the purchase decision. Representative review excerpt: "I was glad that I made the right decision because Ambrose was priced reasonably and the service and support were top notched."

Financing and value explained clearly. Some customers report that they understood the financing terms and felt good about the product and work being offered. These reviews point to a sales process that often made cost and financing feel manageable. Representative review excerpt: "After doing a lot of research, I knew I was getting a good product (SunPower panels), with reasonable financing options, and the work would be done by a reputable company..."

Cost and refund concerns. A smaller but real set of reviewers describe billing, refund, or added-cost disputes, including removal-and-reinstall pricing and concerns about continued payments. These complaints suggest that post-sale cost expectations can sometimes become a problem. Representative review excerpt: "After purchase gouging for a ridiculous quote of $13,000 to remove and reinstall solar panels to make a new roof possible."

Communication & coordination

Communication8.9/10

Communication is one of the strongest themes in the reviews, with many customers describing prompt responses, helpful updates, and attentive project management. Complaints do appear, mostly around missed callbacks, staffing changes, or communication dropping off after earlier contact, but they are relatively limited relative to the praise.Solar.com's composite of published customer feedback, not a customer quote

Responsive project support. Many reviewers say Ambrose Solar stayed in touch, answered questions quickly, and kept them informed through the project. Some specifically mention project managers or staff who were patient and proactive throughout completion. Representative review excerpt: "All in all, she must have written and responded to at least 50 emails on the subject, all the while keeping me informed of the progress."

Immediate or consistent contact. Several customers report getting fast responses and feeling that the company was attentive from the start. These reviews suggest strong day-to-day coordination across the customer experience. Representative review excerpt: "I called out to this company, Ambrose Solar, and got an immediate response."

Dropped communication after contact changes. A smaller group of reviewers says communication became difficult after staffing changes or after earlier follow-up, with some reporting that calls were not returned. These complaints are present but not the dominant pattern. Representative review excerpt: "They did reach out after the previous bad review and once I updated the review, the communication dropped off and still can't get a call back from them."

Timeline reliability

Timeline Reliability7.7/10

Reviewers generally describe the installation and permitting process as organized and on time, with many saying appointments were kept and the work moved along smoothly. The main watch-outs are delays tied to scheduling, utility activation, or outside requirements, which sometimes stretched projects out longer than expected.Solar.com's composite of published customer feedback, not a customer quote

Permits and scheduling handled smoothly. Many reviewers say the company handled permits well and arrived on time or early for scheduled work. These comments point to generally reliable coordination once the project was underway. Representative review excerpt: "They handle all the permits for our system with the county with ease."

Fast completion once work started. Some customers describe the actual installation as quick and efficient, with crews finishing promptly and staying communicative through the process. Others note that even larger or more complicated projects were managed steadily. Representative review excerpt: "They were very friendly when they came out and the work was done very promptly and we paid them right away."

Delays and utility timing issues. A smaller set of reviews mention long project timelines, rescheduling, or waiting on utility-related activation steps. These reports suggest that timeline reliability can be affected by factors outside the install itself. Representative review excerpt: "It is a lengthy process (about a year) from a change in government requirement that PGE did not met in the beginning."

Workmanship & site care

Workmanship9.0/10

Most reviewers describe the installation crews as professional, careful, and clean, with many praising the quality of the finished work. A few complaints mention roof leaks, cleanup or conduct issues, and other installation-related concerns, but they are a small share of the overall feedback.Solar.com's composite of published customer feedback, not a customer quote

Professional, clean installation crews. Many reviewers say the installers and electricians were courteous, efficient, and careful on site. Several also mention clean work areas and a smooth final quality check. Representative review excerpt: "The install took two days and that team was on time, clean and more than willing to answer questions during the install."

Strong finished workmanship. Customers often describe the finished system and visible details as well executed, with some noting that the team handled challenging roofs or complex setups well. These reviews point to high satisfaction with the physical installation. Representative review excerpt: "With such a high pitch, I would not want to go up on the clubhouse roof, and they made it look easy!"

A few installation-related complaints. A small number of reviewers report problems such as leaks or conduct they found unprofessional during or after the job. These comments are limited, but they show that workmanship concerns do appear in the record. Representative review excerpt: "I now have roof leaks as well do to there installation of solar panels."

Long-term support & performance

Long-Term Support9.0/10

Post-install reviews are very strong overall, with many customers saying their systems performed well, produced savings, and were supported by helpful follow-up service. The main complaints involve monitoring, delayed repairs, or systems not being fully turned on when expected, but most feedback in this category is positive.Solar.com's composite of published customer feedback, not a customer quote

Strong production and savings reports. Many reviewers say their systems have performed well after activation and that they saw meaningful bill savings or dependable operation over time. Some also mention batteries, charging, or self-reliance benefits in their follow-up reviews. Representative review excerpt: "2025: system operated well for the entire year providing my family with significant savings in our electric bill AND allowed us to charge our plug-in hybrid electric car."

Helpful service after install. Several customers report that Ambrose continued to help with assessments, monitoring questions, or service needs after the project was complete. These comments suggest the company often remains involved after turn-on. Representative review excerpt: "I needed assistance with my existing solar system and Jo came out for a site visit and system assessment since my microinverters weren't reporting."

Monitoring and service delays. A smaller set of reviews describe issues with monitoring devices, delayed support, or systems that were not fully operational as expected. These are not the majority view, but they are the main cautionary theme in the post-install feedback. Representative review excerpt: "My family and I were gone for one year and returned to Fairfield only to discover that our Sun Power PVS6 monitoring device (box) was not communicating for several months."

Bottom line: Across 566 substantive reviews, Ambrose Solar’s strongest themes are communication, workmanship, and long-term support, each with very high scores and mostly positive feedback. The lower-scoring areas are pricing/financing and timeline reliability, where reviewers more often mention surprise costs, payment concerns, delays, or activation timing issues.

How this is built: category scores and summaries weigh the company's full published rating record (296 Google reviews averaging 4.9 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle and Yelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.

About Ambrose Solar

Company background from published business information and licensing records.

Also files CPUC records as: Ambrose Construction.

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.
62
2017
163
'18
367
'19
325
'20
534
'21
901
'22
806
'23
388
'24
475
'25
156
'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 Ambrose Solar

What do customers say in Ambrose Solar reviews?

We analyzed 566 substantive published customer reviews of Ambrose Solar in full. The company's Solar.com Installer Score is 8.8/10, 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 Ambrose Solar installed?

Ambrose Solar appears as installer of record on 4,112+ 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 Ambrose Solar's 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.