64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 472 Google reviews, listed on Google as “Solar energy company”.
- 4.8★ from 472 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 755 Southpoint Blvd, Petaluma, CA 94954
Best Solar Installers in Petaluma, CA (2026)
172 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Petaluma: Sunrun Solar, CR Score 64/100; 4.8★ from 472 Google reviews; open 7 days a week.
- 3
Best for emergencies (open 24/7): Ongaro & Sons, posts 24/7 hours; ranked #3 of 172.
- 4
Most-reviewed: SunPower®, 1,576 Google reviews at 4.5★, the most of 172 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
172 Petaluma solar installers are ranked here by CR Score, from ten published factors. 22 are open 24/7, 82 open Saturdays and 46 open Sundays, based on posted hours. The median Google rating is 4.9★ across 172 rated businesses.
Top 10 solar installers in Petaluma at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sunrun Solar | 64 | 4.8★ (472) | Petaluma | Sat · Sun | Overall |
| 2 | Sunlight Solar Clean | 63 | 5.0★ (484) | Santa Rosa, 16 mi away | Sat · Sun · Evenings | — |
| 3 | Ongaro & Sons | 60 | 4.9★ (538) | Petaluma | 24/7 | Emergencies |
| 4 | SunPower® | 60 | 4.5★ (1,576) | Richmond, 27 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Sonoma Solar Clean | 59 | 5.0★ (157) | Santa Rosa, 22 mi away | Sat · Sun · Evenings | — |
| 6 | Ongaro & Sons | 59 | 4.9★ (1,222) | Santa Rosa, 15 mi away | 24/7 | — |
| 7 | Solar Santa Rosa | 59 | 5.0★ (33) | Santa Rosa, 16 mi away | 24/7 | — |
| 8 | Solano Solar Cleaning LLC | 59 | 5.0★ (40) | Petaluma | Sat · Evenings | — |
| 9 | East Bay Solar Cleaning LLC | 58 | 5.0★ (104) | Lafayette, 37 mi away | 24/7 | — |
| 10 | Ongaro & Sons | 58 | 4.9★ (762) | San Anselmo, 18 mi away | 24/7 | — |
The 172 best solar installers in Petaluma, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Santa Rosa, 16 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 484 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 484 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 1264 Clover Dr, Santa Rosa, CA 95401
Based in Petaluma
60/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 538 Google reviews.
- 4.9★ from 538 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 719 Southpoint Blvd, Petaluma, CA 94954
#4 SunPower®
Based in Richmond, 27 mi away
60/100CR ScoreRanked #4 because of its Google rating and review volume: 4.5★ from 1,576 Google reviews, the most in Petaluma.
- 4.5★ from 1,576 Google reviews
- Hours
- Mon–Fri 5 AM–8 PM · Sat–Sun 6 AM–8 PM
- Address
- 880 Harbour Way S Suite 600, Richmond, CA 94804
Based in Santa Rosa, 22 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 157 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 157 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
Based in Santa Rosa, 15 mi away
59/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 1,222 Google reviews.
- 4.9★ from 1,222 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 250 D St Suite 700B, Santa Rosa, CA 95404
Based in Santa Rosa, 16 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1791 Marlow Rd #2, Santa Rosa, CA 95401
Based in Petaluma
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 40 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
- Address
- 6001 Orchard Station Rd, Petaluma, CA 94952
Based in Lafayette, 37 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 104 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- O'Conner Dr, Lafayette, CA 94549
#10 Ongaro & Sons
Based in San Anselmo, 18 mi away
58/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 762 Google reviews.
- 4.9★ from 762 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Ross Ave, San Anselmo, CA 94960
Based in Cotati, 20 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 45 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
Based in Vacaville, 39 mi away
57/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 1,388 Google reviews.
- 4.9★ from 1,388 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 821 Eubanks Dr STE C, Vacaville, CA 95688
Based in Benicia, 22 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Rohnert Park, 6 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
Based in Santa Rosa, 16 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 90 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun closed
- Address
- 1120 15th St, Santa Rosa, CA 95404
#16 Simply Solar
Based in Petaluma
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 101 Google reviews, listed on Google as “Solar energy company”.
- 4.4★ from 101 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
- Address
- 1740 Corporate Cir, Petaluma, CA 94954
#17 Soleil Solar
Based in Sebastopol, 17 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 15 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 9 AM–5 PM
- Address
- 1347 Ferguson Rd, Sebastopol, CA 95472
Based in Sebastopol, 15 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 84 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 7064 Corline Ct Building B, Sebastopol, CA 95472
Based in Napa, 18 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 29 Vanessa Ct W, Napa, CA 94558
Based in Petaluma
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Solar energy system service”.
- 4.3★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 9 AM–6 PM · Sun closed
- Address
- 1824 Wagner Ln, Petaluma, CA 94954
#21 Semper Solaris
Based in Concord, 36 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.6★ from 135 Google reviews, listed on Google as “Solar energy company”.
- 4.6★ from 135 Google reviews
- Hours
- Mon–Sat 7 AM–12 AM · Sun 9 AM–12 AM
- Address
- 1990 Olivera Rd Suite E, Concord, CA 94520
#22 Synergy Power
Based in Dublin, 28 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 205 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 205 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
#23 Taylor Energy
Based in Sebastopol, 15 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 64 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 612 Petaluma Ave, Sebastopol, CA 95472
Based in Fairfield, 18 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 30 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
Based in Alameda, 19 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Solar installers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 172 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Sustainable Living Builders, Inc | 55 | 4.9★ (84) | 11 mi |
| 27 | Henry Mechanical | 55 | 5.0★ (866) | 23 mi |
| 28 | Bundle, A Solar Company | 55 | 5.0★ (38) | 33 mi |
| 29 | The Empire Home Services | 55 | 5.0★ (75) | 14 mi |
| 30 | Source Energy | 55 | 5.0★ (51) | 39 mi |
| 31 | Tyler Rodrigues Electric - Solar Power, Solar Energy Companies in Petaluma CA | 54 | 5.0★ (14) | In Petaluma |
| 32 | Energy Volition | 54 | 5.0★ (8) | 10 mi |
| 33 | Citadel Roofing & Solar | 54 | 4.7★ (46) | 11 mi |
| 34 | Save a Lot Solar | 54 | 4.9★ (45) | 31 mi |
| 35 | Twinpeak Solar | 54 | 5.0★ (6) | 27 mi |
| 36 | Amy's Roofing and Solar | 54 | 5.0★ (62) | In Petaluma |
| 37 | Sun Solar Electric Inc. | 54 | 5.0★ (61) | In Petaluma |
| 38 | Ambrose Solar | 54 | 4.9★ (258) | 39 mi |
| 39 | Synergy Solar & Electrical Systems Inc. | 54 | 4.8★ (47) | 15 mi |
| 40 | North Valley Solar Power | 54 | 4.9★ (48) | 31 mi |
| 41 | B. Henry's Quality Electric Inc. | 54 | 5.0★ (181) | In Petaluma |
| 42 | Mirador Energy | 53 | 5.0★ (15) | 31 mi |
| 43 | Suntegrity Solar | 53 | 4.8★ (27) | 13 mi |
| 44 | Bella Hem Solar, Inc. | 53 | 5.0★ (86) | 7 mi |
| 45 | Michael & Sun Solar, Inc. | 53 | 5.0★ (35) | 19 mi |
| 46 | Sunrun Solar | 53 | 3.8★ (469) | 33 mi |
| 47 | SolarCraft | 53 | 4.4★ (44) | 13 mi |
| 48 | Earthwise Energy | 53 | 5.0★ (30) | 18 mi |
| 49 | Solar Works | 53 | 4.8★ (32) | 16 mi |
| 50 | ProSolarClean | 53 | 5.0★ (3) | 17 mi |
Also serving Petaluma
20 more solar installers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| All American Air & Solar System | 5.0★ (1) | In Petaluma |
| Aloha Solar | 5.0★ (1) | In Petaluma |
| Bigtime Solar | In Petaluma | |
| Borrego (Oakland) | 4.0★ (2) | 36 mi |
| GHESolar Company San Francisco | 5.0★ (2) | 35 mi |
| Great Solar Panels | 5.0★ (1) | In Petaluma |
| Laketricity USA Inc. | In Petaluma | |
| Martin Electric and HVAC | 5.0★ (30) | In Petaluma |
| NationWize Solar | 1.5★ (2) | 29 mi |
| New Dimension Roofing and Solar | 5.0★ (2) | 34 mi |
| Optivolt | 5.0★ (2) | 36 mi |
| Phils Electric Company | 5.0★ (2) | 33 mi |
| Save Energy Windows and Doors | 4.9★ (100) | In Petaluma |
| Smart Energy USA | 5.0★ (1) | In Petaluma |
| Solar Dealers | 5.0★ (2) | 8 mi |
| Solar Design & Drafting | In Petaluma | |
| Solar Energy JKL | 5.0★ (2) | 26 mi |
| Stellar Energy | In Petaluma | |
| You Benefit Solar | 3.0★ (2) | In Petaluma |
| Zig Energy Solar | In Petaluma |
How much do solar installers cost in Petaluma?
Typical prices in USD, adjusted for California with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $29,770 | $33,680 | $36,640 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.08 Pacific factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Petaluma solar installers
We scored 172 Petaluma solar installers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Petaluma data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Solar installers in Petaluma: frequently asked questions
Who is the best solar installer in Petaluma?
By CR Score, the highest-ranked solar installer in Petaluma, CA is Sunrun Solar with a CR Score of 64/100. It has 4.8★ from 472 Google reviews. It is open 7 days a week. Sunlight Solar Clean (#2) and Ongaro & Sons (#3) follow. We ranked 172 solar installers on ten factors, last updated October 22, 2026.
How many solar installers are there in Petaluma?
ContractorsRanked ranks 172 solar installers serving Petaluma, CA. 9 of them are based in Petaluma; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which solar installers in Petaluma are open 24/7?
22 ranked solar installers in Petaluma post 24/7 hours. The highest-ranked are Ongaro & Sons (#3), Ongaro & Sons (#6) and Solar Santa Rosa (#7). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Petaluma work on weekends?
82 of 172 ranked solar installers post Saturday hours and 46 post Sunday hours. The highest-ranked open Saturdays are Sunrun Solar (#1), Sunlight Solar Clean (#2) and Ongaro & Sons (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Petaluma?
Solar panel installation typically costs $29,770 to $36,640, with $33,680 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.08 Pacific factor (2025 Cost vs. Value Report)). The range is adjusted for California. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Petaluma solar installers have?
The median Google rating among 172 rated solar installers in Petaluma is 4.9★, with a median of 25 reviews. SunPower® has the most, 1,576 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank solar installers?
Each solar installer gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do solar installers outside Petaluma count in this ranking?
Yes, if they are within 40 mi of the Petaluma city center, our service radius for solar installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Petaluma
- October 2026: CR Scores recalculated for 172 solar installers serving Petaluma.
- October 2026: 2 duplicate listings merged.
More solar installers and Petaluma pages
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