Best solar companies California Summit Technology Group

Summit Technology Group Reviews

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

359verified installs in California utility records*
66recent installs, 2025-26 records*
2010first year in county records
7.8/10Solar.com Score · 32 reviews analyzed

Solar.com Installer Score for Summit Technology Group

One score, computed the same way for every installer. We read the full text of all 32 substantive published Summit Technology Group review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

7.8/10

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

Synthesized from 32 substantive customer review texts (38 published reviews collected).

Google 4.8★ · 26 reviewsYelp 3.9★ · 12 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.9.6

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.7.0

6 reviews speak to this · 5 praise · 1 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.6.1

5 reviews speak to this · 2 praise · 3 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.7.1

13 reviews speak to this · 10 praise · 3 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.6.5

4 reviews speak to this · 2 praise · 2 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.7.8

16 reviews speak to this · 14 praise · 1 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.7.8

5 reviews speak to this · 5 praise · 0 complaints

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

How does Summit Technology Group 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 Summit Technology Group 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 County2975920107.4 kW0.0%See county ranking →
Napa County383201211.0 kW0.0%below ranking floor (under 250 installs)
Marin County24420127.7 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.

Summit Technology Group 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 Integrity7.0/10

Reviewers mostly describe the sales process as clear, responsive, and straightforward, with several noting helpful guidance and quick quoting. A smaller complaint pattern centers on expectations not being fully explained up front, especially around consultation or estimate-related charges.Solar.com's composite of published customer feedback, not a customer quote

Helpful, responsive proposals. Several reviewers say the team provided timely quotes and practical guidance, with a focus on making the proposed work fit the customer’s goals and aesthetics. Representative review excerpt: "Company 2 (Summit) provided a quote on the same day and had an appointment booked for the install on 2/1/22."

Honest project feedback. Some reviewers report receiving candid advice about whether a project was worthwhile at the time, which they viewed as a sign of integrity in the sales conversation. Representative review excerpt: "They were super responsive and the technician Jason gave a very honest and insightful opinion of whether it was worth the install (which it was not at the time) --..."

Up-front fee expectations. One reviewer describes not being told in advance to expect a consultation or estimate-related charge, pointing to a gap between the phone conversation and the billing experience. Representative review excerpt: "Nowhere was this explained over the phone when I called that I should expect a 'consultation fee' or any expenses for an estimate."

Price & financing transparency

Price Transparency6.1/10

Feedback on pricing is mixed to somewhat negative. Some reviewers describe reasonable, discussable pricing, but others report confusion or dissatisfaction around trip charges, added billable time, and final cost and expectations.Solar.com's composite of published customer feedback, not a customer quote

Added charges on the bill. Some reviewers report surprise around trip charges or additional billed time that they felt was not clearly set out beforehand. Representative review excerpt: "I was told on the phone there would be a $59.00 trip charge and then whatever it cost to fix the problems."

Cost concerns at the high end. One reviewer says the final price range felt too expensive for the project and ultimately led them to choose a different route. Representative review excerpt: "The poor experience led us to go a completely different route that was far simpler than anything Summit could render and cost less than half of their lowest range."

Clear price discussions. A few reviewers say they were able to talk through pricing concerns and work out details during the process. Representative review excerpt: "This in not to say that there have not been the occasional rough patch during the process, but we've always been able to talk it out and arrive at a..."

Communication & coordination

Communication7.1/10

Communication is generally described positively, with many reviewers highlighting responsiveness and professional follow-through. The main complaints involve missed or unclear explanations around fees and invoice language, so the section is positive overall but not spotless.Solar.com's composite of published customer feedback, not a customer quote

Responsive, professional contact. Multiple reviewers say the team was responsive, professional, and easy to reach during the project. Representative review excerpt: "Great team, super responsive and they've delivered high-quality, professional results on both jobs they've done for us."

Helpful issue-solving. Reviewers also describe staff members who took time to explain options, troubleshoot problems, and go beyond the basic scope when needed. Representative review excerpt: "He also traced out and resolved a problem with one of my RadioRa2 switches that did not have enough load on it to function properly as I had removed a..."

Fee explanations not always clear. A few reviewers report confusion about diagnostic or consultation charges and say those costs were not clearly explained when they expected them to be. Representative review excerpt: "Nowhere was this explained over the phone when I called that I should expect a 'consultation fee' or any expenses for an estimate."

Timeline reliability

Timeline Reliability6.5/10

Timeline feedback is mixed but not strongly negative. Some reviewers say projects moved at a good pace, while others describe missed calls or delays tied to coordination and utility-related follow-up.Solar.com's composite of published customer feedback, not a customer quote

Work completed in a reasonable time. Some reviewers say the project was completed in a good amount of time even when there were a few electrical hiccups along the way. Representative review excerpt: "Even with some hiccups with the electrical work at our house, they were able to get everything done in a Good amount of time and last month or electric and..."

Detail during install timing. A reviewer describes the installer as going beyond the basic install steps and finishing the work in a way that supported the scheduled scope. Representative review excerpt: "Not only did he install the wall connector and sub panel, but he went above and beyond by surrounding the new components with plywood which made the appearance looked much..."

Follow-up delays or missed contact. Other reviewers report problems getting a callback or moving the process forward at the expected pace, especially when they needed a utility-related receipt or follow-up. Representative review excerpt: "This is very important for me to show utility receipt No call!"

Workmanship & site care

Workmanship7.8/10

Workmanship receives mostly positive marks, especially for professional-looking installs, attention to detail, and cleanup. There are still a small number of complaints about conduct or execution, but they are rare relative to the praise.Solar.com's composite of published customer feedback, not a customer quote

Clean, detail-oriented installs. Several reviewers praise the installers’ attention to detail and say the work area was kept clean, with finished results that looked polished. Representative review excerpt: "We were very impressed with the amount of detail the installers used to make sure that the space was kept clean and could not believe how immaculate the work behind..."

Professional finished appearance. Reviewers also mention thoughtful touches like enclosing components neatly and making the installation look good aesthetically. Representative review excerpt: "Not only did he install the wall connector and sub panel, but he went above and beyond by surrounding the new components with plywood which made the appearance looked much..."

Conduct concern from one review. One reviewer describes a negative interaction involving a driver and characterizes the conduct as unprofessional and aggressive. Representative review excerpt: "Unprofessional & aggressive drivers work for this company"

Long-term support & performance

Long-Term Support7.8/10

Post-install support is a clear strength in the review set. Reviewers describe good follow-up, effective warranty help, and responsive service after the initial job, with no material complaint pattern in this category.Solar.com's composite of published customer feedback, not a customer quote

Return customers and repeat service. Some reviewers say they came back to the company months or a year later for additional work, which suggests ongoing confidence after the original install. Representative review excerpt: "After the initial job, we reached out to them again a year later regarding generators and battery systems."

Warranty and monitoring support. Reviewers report that the company monitored panel performance over time, honored warranties, and addressed issues effectively. Representative review excerpt: "During the monitoring of my panels' performance over the last year and a half, they've honored warranties and addressed problems effectively."

Quick problem resolution. One reviewer says a technician returned quickly and handled a problem promptly after the initial installation. Representative review excerpt: "Daniel was here in a flash and took care of the problem in no time at all..."

Bottom line: SUMMIT TECHNOLOGY GROUP’s review profile is strongest on workmanship and post-install support, with many customers describing responsive service and solid finished work. The most consistent concerns involve pricing clarity, fee explanations, and occasional timeline or follow-up issues, while sales-related feedback is generally positive with a small number of upfront-cost complaints.

How this is built: category scores and summaries weigh the company's full published rating record (26 Google reviews averaging 4.8 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 Summit Technology Group

Company background from published business information and licensing records.

Also files CPUC records as: Summit Electric.

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.
1
2006
13
'10
2
'11
6
'12
3
'13
5
'14
2
'15
6
'16
14
'17
13
'18
10
'19
29
'20
56
'21
51
'22
61
'23
47
'24
34
'25
36
'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 Summit Technology Group

What do customers say in Summit Technology Group reviews?

We analyzed 32 substantive published customer reviews of Summit Technology Group in full. The company's Solar.com Installer Score is 7.8/10, 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 Summit Technology Group installed?

Summit Technology Group appears as installer of record on 359+ 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 Summit Technology Group'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.