Eric Kooper1 reviewTotal number of Google reviews Eric has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleGreat work and a fair price, will be setting up an annual cleaning!
Sonoma Solar Clean
How 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 69%100+69.2Reliability 31%98+30.2Experts Score= 99Not enough data for value, 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.99SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#7 of 80 solar servicesPosition by Experts Score among all companies we track in this category. · better than 92%
5.0 ★★★★★ 179 Google reviews · 24 photos
100%five-star reviews
5.00★last 12 monthsAverage stars on reviews from the last 12 months only.
0%1–2★ in 2 yearsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
97%reviews answered by the owner
Oct 2026latest review
Sonoma Solar Clean at a glance
Google reviewers rate Sonoma Solar Clean 5/5 based on 179 reviews, with the owner replying to 97% of them. Customers consistently describe the company as punctual, responsive, and professional, noting that staff arrive on time and communicate clearly via text or email. Services include solar panel cleaning, bird-proofing, and general home maintenance, with pricing described as fair and transparent. Reviewers highlight the use of proper equipment and the provision of additional advice regarding property maintenance. The provided excerpts contain no low-star ratings or recurring criticisms.
- Google rating: 5.0 out of 5 from 179 reviews (100% five-star).
- Reviews on this page: 179 Google reviews (158 with written comments, 27 with photos).
- Owner responses: the business replied to 97% of reviews.
- Most recent review: October 28, 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)Each 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: satisfaction and momentum; weakest: reliability.
SatisfactionSatisfaction · 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.Sonoma Solar Clean: 100/100 on this factor. Category median: 93.A
100
ReliabilityReliability · 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.Sonoma Solar Clean: 98/100 on this factor. Category median: 91.A
98
Craft & serviceCraft & 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.Not enough reviews for this factor yet. Category median: 99.–
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ValueValue · 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.Not enough reviews for this factor yet. Category median: 100.–
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MomentumMomentum · 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.Sonoma Solar Clean: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies 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.–
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Bar = this company · dark tick = category median.
Star ratings
179 Google reviews we collected
- 5 stars179100%
- 4 stars00%
- 3 stars00%
- 2 stars00%
- 1 star00%
Praise vs complaints
Phrases our text analysis found in 158 written reviews
- Praise39799%
- Complaints21%
Topic share
How often each topic comes up in the written reviews
- Speed & response8622%
- Quality & results7920%
- Staff & attitude7619%
- Would recommend6015%
- Price & value5013%
- Communication379%
- Honesty & trust113%
What customers talk about
We read 158 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“He made scheduling easy, arrived on time, and even sent a quick update beforehand with his ETA.”
“Great work and a fair price, will be setting up an annual cleaning!”
“Brian is exactly the kind of business owner you hope to work with in a small community.”
“If you need your solar panels cleaned or have pigeons nesting underneath them, I highly recommend having the bird-proof fencing installed as well.”
“My solar panels came out incredibly clean for a very reasonable price.”
“Exceptional, communication, customer service, execution and overall experience.”
“He is honest, dependable, and a true asset to local homeowners.”
People customers mention
- Brian 47 reviews
- Rick 4 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Recent reviews
Deanna8 reviewsTotal 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. · a month ago★★★★★
Brian is exactly the kind of business owner you hope to work with in a small community. He made scheduling easy, arrived on time, and even sent a quick update beforehand with his ETA. He is honest, dependable, and a true asset to local homeowners. He also offers power washing among other services and gave us a…
GaryLocal Guide · 9 reviewsTotal 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★★★★★
Prompt, efficient, and pleasant. Brian goes the extra mile. He took care of a couple of additional items for us with a nice smile. Highly recommend.
Nicholas3 reviewsTotal 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★★★★★
Got back to me with a quote and got the service done within 2 days of me reaching out! Very efficient
Jann2 reviewsTotal 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. · 3 months ago★★★★★
Brian was awesome! He was able to fit me into his schedule, and the entire process was smooth, easy, and professional from start to finish. If you need your solar panels cleaned or have pigeons nesting underneath them, I highly recommend having the bird-proof fencing installed as well. Give Brian a call, you won’t be disappointed!
Ryan1 reviewTotal 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. · 3 months ago★★★★★
Exceptional, communication, customer service, execution and overall experience. Highly recommend for anything having to do with solar panels or anything else he does for that matter
Johanna11 reviewsTotal 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★★★★★
Fantastic and very honest work. No selling for additional services, just great advice and information on how to continue to care for my solar panels. I highly recommend Sonoma Solar Clean to anyone looking for exceptional solar panel care and all over home care (house washing, concrete cleaning etc).
Photos
Customer reviews
5.0 ★★★★★ 179 reviews on Google · rating breakdown
Reviews from Google, shown as published (original wording, unedited).
Team members customers mention
Deanna Williamson Wooster8 reviewsTotal number of Google reviews Deanna has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleBrian is exactly the kind of business owner you hope to work with in a small community. He made scheduling easy, arrived on time, and even sent a quick update beforehand with his ETA. He is honest, dependable, and a true asset to local homeowners. He also offers power washing among other services and gave us a straightforward, honest assessment of what we actually needed. We will absolutely work with him again. Thanks, Brian!
Response from the owner · a month ago
Hi Deanna. Thanks so much for the review. I really appreciate your kind words and I am grateful to meet you and your husband. I look forward to seeing you guys again.
Zachary Rector6 reviewsTotal number of Google reviews Zachary has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleOn time, responsive, did a great job with all the proper equipment.
Response from the owner · a month ago
Right on! Thanks so much for the review. I really appreciate it and it was nice to meet you.
Tristan Stidham2 reviewsTotal number of Google reviews Tristan has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleSuper accommodating and solidly priced. Made the process all very easy.
Response from the owner · a month ago
Hey Tristan. Thanks so much for the opportunity and having me to your house to clean your panels. It was very nice to meet you.
Gary KelechavaLocal Guide · 9 reviewsTotal number of Google reviews Gary has written across all businesses on Google Maps, not just this one.
Review from Google · view on GooglePrompt, efficient, and pleasant. Brian goes the extra mile. He took care of a couple of additional items for us with a nice smile. Highly recommend.
Response from the owner · 2 months ago
Nice meeting you and your wife, Gary. Glad I could help. Look forward to seeing you next time. Thanks again.
Nicholas Schafer3 reviewsTotal number of Google reviews Nicholas has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleGot back to me with a quote and got the service done within 2 days of me reaching out! Very efficient
Response from the owner · 2 months ago
Thank you, Nicholas. I appreciate you having me to your home and giving me the opportunity. Look forward to meeting you next time.
Linda Biondini10 reviewsTotal number of Google reviews Linda has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleExcellent work and very efficient. Great value and service!
Response from the owner · 2 months ago
Thanks so much for having me, Linda. Pleasure meeting you and your husband. Have a great weekend and thanks again.
Jann Thorpe2 reviewsTotal number of Google reviews Jann has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleBrian was awesome! He was able to fit me into his schedule, and the entire process was smooth, easy, and professional from start to finish. If you need your solar panels cleaned or have pigeons nesting underneath them, I highly recommend having the bird-proof fencing installed as well. Give Brian a call, you won’t be disappointed!
Response from the owner · 3 months ago
Hey Jann! Thank you so very much for the review. They help so much. I’m very appreciative and I’m glad we got you dialed in before cleaning them. Poor pigeons will be at a neighbors house in no time lol. Thanks again.
Ukulele Andy2 reviewsTotal number of Google reviews Ukulele has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleQuick and thorough. Thanks Brian.
Response from the owner · 3 months ago
Thanks so much for having me and giving me the opportunity. See you again in 2027!
Jack MacDonald4 reviewsTotal number of Google reviews Jack has written across all businesses on Google Maps, not just this one.
Review from Google · view on GoogleVery professional and diligent Thank you Brian
Response from the owner · 3 months ago
Hey Jack. Thank you! I appreciate the opportunity to work for you. Your backyard is the ultimate summer hangout spot! Thanks again and look forward to seeing you next time. Brian
Business details
- Phone: (707) 326-2584
- Website: sonomasolarclean.com
- Service area: Santa Rosa, CA