Best solar companies California Michael & Sun Solar

Michael & Sun Solar Reviews

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

383verified installs in California utility records*
65recent installs, 2025-26 records*
2014first year in county records
8.4/10Solar.com Score · 59 reviews analyzed

Solar.com Installer Score for Michael & Sun Solar

One score, computed the same way for every installer. We read the full text of all 59 substantive published Michael & Sun 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

8.4/10

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

Synthesized from 59 substantive customer review texts (60 published reviews collected).

Google 5.0★ · 42 reviewsYelp 5.0★ · 18 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.7.6

23 reviews speak to this · 22 praise · 1 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.7.1

10 reviews speak to this · 10 praise · 0 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.7.9

36 reviews speak to this · 36 praise · 0 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.7.3

26 reviews speak to this · 25 praise · 1 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.1

27 reviews speak to this · 27 praise · 0 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.8.2

19 reviews speak to this · 19 praise · 0 complaints

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

How does Michael & Sun 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 Michael & Sun 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.
Sonoma County3686520156.8 kW0.3%See county ranking →
El Dorado County15020146.6 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.

Michael & Sun Solar reviews: what customers say

An independent synthesis of published customer feedback across Google and Yelp, updated September 23, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity7.6/10

Reviewers generally describe the sales process as thoughtful and responsive, with proposals adjusted to fit site needs and back-and-forth handled professionally. The main caution is that there is at least one complaint in the corpus, so expectations around proposal detail and fit should still be reviewed carefully.Solar.com's composite of published customer feedback, not a customer quote

Needs-based proposals. Reviewers say the team listened carefully, revised proposals when needed, and helped shape system designs around present and future needs. Representative review excerpt: "They listened carefully to our needs both present and future, came up with a proposal which we tweaked several times, and were always available with a quick response (both pre..."

Flexible design adjustments. Some reviewers report that design changes were handled smoothly and incorporated into the contract price without added friction. Representative review excerpt: "And when we needed an adjustment to the design to maximize our solar collection, they came up with a plan and made that correction as part of our contract price."

Watch the details. There is a small amount of critical feedback in this area, suggesting that a few customers were more demanding about the sales experience and proposal expectations. Representative review excerpt: "Bear in mind that I am a retired electrical contractor and am hard to please."

Price & financing transparency

Price Transparency7.1/10

Feedback on pricing and financing is mostly positive, with reviewers describing clear pricing and helpful guidance through financing steps. The corpus does not show a broad pattern of cost complaints, but the score suggests customers still value confirming the final price, financing terms, and any incentive timing up front.Solar.com's composite of published customer feedback, not a customer quote

Clear pricing experience. Reviewers describe a recurring pattern in this area. Representative review excerpt: "We are very happy with our solar installation and price."

Financing help. Some customers report receiving guidance through financing programs, which they found helpful during the process. Representative review excerpt: "William guided us through the process of financing with the Sonoma County Energy Independence Program."

Contract-price adjustments. One reviewer says a design adjustment was completed within the original contract price, which supports a positive view of pricing transparency. Representative review excerpt: "And when we needed an adjustment to the design to maximize our solar collection, they came up with a plan and made that correction as part of our contract price."

Communication & coordination

Communication7.9/10

Reviewers consistently describe strong communication, with quick responses, clear updates, and steady coordination across sales, design, finance, and installation. Because complaints are rare in this category, the overall picture is strongly positive.Solar.com's composite of published customer feedback, not a customer quote

Clear ongoing updates. Reviewers say the team kept them informed throughout the process and communicated in a clear, consistent way. Representative review excerpt: "The team kept us informed every step of the way, and their communication was clear and consistent throughout the entire process."

Quick responses. Some reviewers report that the team was readily available and responsive during proposal and planning discussions. Representative review excerpt: "They listened carefully to our needs both present and future, came up with a proposal which we tweaked several times, and were always available with a quick response (both pre..."

Cross-team coordination. Customers also describe smooth handoffs across different parts of the project, including sales, design, installation, account management, and finance. Representative review excerpt: "The team (from sales, design, and installation to account management and finance) was very professional and capable."

Timeline reliability

Timeline Reliability7.3/10

Timeline feedback is generally favorable, especially around permitting and inspection handling.Solar.com's composite of published customer feedback, not a customer quote

Permit handling. Reviewers say the company handled permits and inspections professionally and took ownership of the administrative steps. Representative review excerpt: "Handled all permitting and inspection in a extremely professional manner."

Project stayed on track. Some customers report that the team completed the job when promised and managed the process without obvious scheduling issues. Representative review excerpt: "They got the job done when they said they would and their price was very competitive."

Planning back-and-forth. One reviewer describes timeline challenges during the planning phase, with repeated revisions to plans and schematics before moving ahead. Representative review excerpt: "This latest project came with some timeline challenges during the planning phase, with quite a bit of back and forth over plans and schematics."

Workmanship & site care

Workmanship8.1/10

Reviewers consistently praise the crew’s professionalism, attention to detail, and installation quality. The category is strongly positive overall, with only limited room for caution around the normal need to verify site specifics and inspection follow-through.Solar.com's composite of published customer feedback, not a customer quote

Professional install crews. Customers describe installation crews as clean, professional, and thorough during the work on site. Representative review excerpt: "When our installation day came, 3 of the staff showed up and they were very clean, professional, and thorough in completing the installation over the course of two days."

Attention to detail. Reviewers say the team showed strong care in completing the job and delivering a high-quality outcome. Representative review excerpt: "Overall, we’re very happy with the outcome and grateful for Michel and the Sun Solar team's professionalism and attention to detail."

Complete the work. One review references a project that had already been started elsewhere and was then completed by this company, which underscores the importance of clear site responsibility. Representative review excerpt: "My project had been started by a company that did not complete the work and went out of business."

Long-term support & performance

Long-Term Support8.2/10

Post-install feedback is one of the strongest areas, with reviewers describing solid system results, useful support, and responsive service after the project was finished. The available reviews are very favorable, and complaints are rare in the analyzed corpus.Solar.com's composite of published customer feedback, not a customer quote

Strong product support. Customers report receiving helpful product support and service after installation. Representative review excerpt: "Amazing product support and service."

Good system outcomes. Reviewers say they are happy with their solar and battery systems and view the end result positively. Representative review excerpt: "We love our solar and battery system."

Design for performance. Some reviewers note that the system was designed with panels and batteries selected to support the home’s needs over time. Representative review excerpt: "You will definitely get what you pay for: expert guidance in designing the system, top of the line solar panels and batteries, quality installation, and the integrity to stay the..."

Bottom line: MICHAEL & SUN SOLAR’s review profile is broadly positive, with especially strong marks for communication, workmanship, and long-term support. The softer areas are sales/paperwork clarity, pricing transparency, and timeline management, where the feedback is still mostly favorable but a bit more mixed or cautious.

How this is built: category scores and summaries weigh the company's full published rating record (41 Google reviews averaging 5.0 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 Michael & Sun Solar

Company background from published business information and licensing records.

Also files CPUC records as: Michael and Sun Solar.

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.
5
2014
9
'15
10
'16
13
'17
30
'18
39
'19
29
'20
14
'21
59
'22
84
'23
58
'24
47
'25
19
'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 Michael & Sun Solar

What do customers say in Michael & Sun Solar reviews?

We analyzed 59 substantive published customer reviews of Michael & Sun Solar in full. The company's Solar.com Installer Score is 8.4/10, 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 Michael & Sun Solar installed?

Michael & Sun Solar appears as installer of record on 383+ 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 Michael & Sun 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.