Solar energy system service · Santa Rosa, CA · reviewed since 2017
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%97+56.9Reliability 26%93+24.3Value 15%100+15.2Craft & service penalty98−0.2Experts Score= 96Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.96SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#25 of 80 solar servicesiPosition by Experts Score among all companies we track in this category. · better than 70%
5.0★★★★★41 Google reviews · 24 photos
98%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
0%1–2★, last 20 reviewsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Customers rate the company five stars based on forty-one reviews, noting that the owner responds to ninety-three percent of feedback. Reviewers describe services including solar panel and battery installations, financing guidance, and permitting coordination with utility companies. Recurring themes highlight professional communication, competitive pricing, and prompt post-installation support for troubleshooting. The team is frequently noted for completing projects on schedule and providing clear explanations without aggressive sales tactics.
Google rating: 5.0 out of 5 from 41 reviews (98% five-star).
Reviews on this page: 41 Google reviews (40 with written comments, 4 with photos).
Owner responses: the business replied to 93% of reviews.
Most recent review: August 12, 2026.
Service: Solar Service serving Santa Rosa, California.
Data from Google, last updated October 29, 2026.
Score profile vs other solar services
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: reliability.
Michael & Sun Solar, Inc.Solar Services median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Michael & Sun Solar, Inc.: 97/100 on this factor. Category median: 93.A
97
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Michael & Sun Solar, Inc.: 93/100 on this factor. Category median: 91.A
93
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Michael & Sun Solar, Inc.: 98/100 on this factor. Category median: 99.A
98
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Michael & Sun Solar, Inc.: 100/100 on this factor. Category median: 100.A
100
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Michael & Sun Solar, Inc.: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 79.–
–
Bar = this company · dark tick = category median.
Star ratings
41 Google reviews we collected
5.0of 5
5 stars4098%
4 stars12%
3 stars00%
2 stars00%
1 star00%
Praise vs complaints
Phrases our text analysis found in 40 written reviews
99%praise
Praise11399%
Complaints11%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
100%fair
Great price457%
Reasonable343%
Overpriced00%
Not sure00%
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude2623%
Would recommend2118%
Quality & results1917%
Speed & response1917%
Price & value1211%
Communication109%
Honesty & trust76%
What customers talk about
We read 40 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“He was extremely knowledgeable and is a top-notch professional!”
“Our friends were right, we absolutely recommend going with Michael & Sun Solar!”
“Michael and Sun performed a thorough job from start to finish.”
“…al which we tweaked several times, and were always available with a quick response (both pre and post-installation) when we had questions or concerns.…”
“Every part of the process was clear, fair, efficient—I couldn't have asked for more out of solar partner.”
“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…”
“You will be working with people of the highest integrity; and that, unfortunately, is not always true in the solar business.”
People customers mention
William4 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Recent reviews
SSharon1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★
This was a great team. My project had been started by a company that did not complete the work and went out of business. Michael and Sun came in and cleaned it up. Everything is working beautifully, registering with power company complete. Thank you, what a relief
Reasonable price
MMelissa1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 4 months ago★★★★★
William Schock and the folks at Michael & Sun Solar are phenomenal. I was referred to them on a recommendation, and I couldn't be more pleased with the service and attention we received. William guided us through the process of financing with the Sonoma County Energy Independence Program. He was extremely…
Great price
SSusan8 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 5 months ago★★★★★
If you are considering solar and other related services, don't walk ..RUN to Michael & Sun Solar in Graton, CA. :)
You will be working with people of the highest integrity; and that, unfortunately, is not always true in the solar business. We worked directly with the owner Michael and William Shock who patiently…
Reasonable price
AAlexander8 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★
These folks are fantastic, fair, and thorough. I got quotes from multiple solar installers, and this one just felt right. Wasn't trying to sell me financing or any other scams. In fact, the payback on the system ended up being on the edge, and the team really pushed me to consider whether I wanted the system. It's rare to find honest people these days.
Great price
DDavid3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★
Michael & Sun was recommended by two of our friends, and after getting 3 quotes we decided to use them as well. From the beginning we were impressed by the professionalism of the M&S team. They listened carefully to our needs both present and future, came up with a proposal which we tweaked several times, and were…
Reasonable price
CChuck4 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★
Michael and his team did superb work for us. I couldn't have been more impressed. Great price; great people!
This was a great team. My project had been started by a company that did not complete the work and went out of business. Michael and Sun came in and cleaned it up. Everything is working beautifully, registering with power company complete. Thank you, what a relief
Price assessment: Reasonable price
M
Melissa Wilde1 reviewiTotal number of Google reviews Melissa has written across all businesses on Google Maps, not just this one.
William Schock and the folks at Michael & Sun Solar are phenomenal. I was referred to them on a recommendation, and I couldn't be more pleased with the service and attention we received. William guided us through the process of financing with the Sonoma County Energy Independence Program. He was extremely knowledgeable and is a top-notch professional! You will be in good hands with Michael & Sun!
Price assessment: Great price
S
Susan Larson8 reviewsiTotal number of Google reviews Susan has written across all businesses on Google Maps, not just this one.
If you are considering solar and other related services, don't walk ..RUN to Michael & Sun Solar in Graton, CA. :)
You will be working with people of the highest integrity; and that, unfortunately, is not always true in the solar business. We worked directly with the owner Michael and William Shock who patiently walked with us every step of the way in the process, including advising us when we applied for a SCEIP loan. 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. 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 course until the system is up and running perfectly!! We couldn't be more pleased!!
Price assessment: Reasonable price
A
Alexander Niehenke8 reviewsiTotal number of Google reviews Alexander has written across all businesses on Google Maps, not just this one.
These folks are fantastic, fair, and thorough. I got quotes from multiple solar installers, and this one just felt right. Wasn't trying to sell me financing or any other scams. In fact, the payback on the system ended up being on the edge, and the team really pushed me to consider whether I wanted the system. It's rare to find honest people these days.
Price assessment: Great price
Response from the owner · 8 months ago
We're honored to receive such a compliment, Alexander - thank you very much!
D
David Berman3 reviewsiTotal number of Google reviews David has written across all businesses on Google Maps, not just this one.
Michael & Sun was recommended by two of our friends, and after getting 3 quotes we decided to use them as well. From the beginning we were impressed by the professionalism of the M&S team. 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 and post-installation) when we had questions or concerns. We were facing a tight year-end deadline, and all timelines were met on schedule. Special shout out to William and Michael who were a pleasure to deal with. Our friends were right, we absolutely recommend going with Michael & Sun Solar!
Price assessment: Reasonable price
Response from the owner · 8 months ago
Thank you very much for the compliments, David - we feel lucky that you chose us.
C
Charlotte Connors12 reviewsiTotal number of Google reviews Charlotte has written across all businesses on Google Maps, not just this one.
Michael and Sun performed a thorough job from start to finish. Handled all permitting and inspection in a extremely professional manner. Very conscientious with planning conduit runs and installation technically and aesthetically. I will continue, to recommend Michael and Sun to all my clients planning on going solar. Donald Alameida, Architect.
Price assessment: Great price
Response from the owner · 8 months ago
Thank you very much for those kind words, Donald. We certainly do strive to make every system look as good as it performs - glad we made the mark on this one!
K
Kristin Nichols3 reviewsiTotal number of Google reviews Kristin has written across all businesses on Google Maps, not just this one.
We were extremely satisfied with Michael & Sun Solar. They were available any time for any of our many questions, even before we signed a contract. We love our solar and battery system. It's been so much fun to harvest the sun. We purchased a second electric car, and it is now the most fun game to catch as much of that free sun that we can.
Price assessment: Great price
Response from the owner · 8 months ago
It certainly can be a challenge to be as efficient with our resources as possible, and I love that you think of it as a game, Kristin - sometimes, it can even be fun! For example, my son and I like to see just how far we can drive in our hybrid before the gas motor kicks in - there are definitely some tricks to it!
J
Jose LandaverdeLocal Guide · 20 reviewsiTotal number of Google reviews Jose has written across all businesses on Google Maps, not just this one.
We recently completed our second solar installation with Michel and Sun Solar, having previously worked with them on another property. Once again, they delivered solid results.
This latest project came with some timeline challenges during the planning phase, with quite a bit of back and forth over plans and schematics. That said, once we received final approval, everything moved forward smoothly and right on schedule. The team kept us informed every step of the way, and their communication was clear and consistent throughout the entire process.
The installers themselves were fantastic—very friendly, respectful of our space, and impressively tidy. It’s always a good sign when a crew treats your home like their own.
Overall, we’re very happy with the outcome and grateful for Michel and the Sun Solar team's professionalism and attention to detail. Would definitely recommend them, and wouldn’t hesitate to work with them again in the future.
Response from the owner · 8 months ago
Wow, I'm speechless. Thank you so much for those compliments, Jose. . . and we look forward to our next project together! :-)