84/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 32 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 32 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Solar Installers in Williamson, AZ (2026)
12 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Williamson: Precision Powerwash Services LLC, CR Score 84/100; 5.0★ from 32 Google reviews; open 24/7.
- 2
Most-reviewed: SolarOne Southwest Energy Group, 82 Google reviews at 4.9★, the most of 12 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
12 Williamson solar installers are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 4 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.9★ across 12 rated businesses.
Top 10 solar installers in Williamson at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Precision Powerwash Services LLC | 84 | 5.0★ (32) | Chino Valley, 13 mi away | 24/7 | Overall |
| 2 | SolarOne Southwest Energy Group | 80 | 4.9★ (82) | Cottonwood, 31 mi away | — | Most reviews |
| 3 | AZ Independence Solar | 79 | 4.6★ (7) | Prescott Valley, 12 mi away | Sat | — |
| 4 | SunCore Power | 78 | 4.4★ (31) | Cottonwood, 30 mi away | Sat · Evenings | — |
| 5 | Pump Tech Inc | 76 | 4.9★ (7) | Chino Valley, 9 mi away | — | — |
| 6 | Rooftop Solar | 76 | 5.0★ (7) | Prescott, 11 mi away | — | — |
| 7 | Budget-Solar.com | 74 | 3.0★ (6) | Prescott Valley, 12 mi away | — | — |
| 8 | Verde Solar Power | 73 | 5.0★ (37) | Cottonwood, 31 mi away | — | — |
| 9 | McGee Well Drilling & Pump Service LLC | 73 | 4.7★ (29) | Chino Valley, 7 mi away | — | — |
| 10 | KH&F Resources | 71 | 5.0★ (16) | Verde Village, 37 mi away | Sat | — |
The 12 best solar installers in Williamson, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Based in Cottonwood, 31 mi away
80/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 82 Google reviews, the most Google reviews on this list (82).
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 82 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 887 S Main St, Cottonwood, AZ 86326
Based in Prescott Valley, 12 mi away
79/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.6★ from 7 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 6830 E Voltaire Dr, Prescott Valley, AZ 86314
Based in Cottonwood, 30 mi away
78/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 31 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.4★ from 31 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
- Address
- 830 S Main St #2e, Cottonwood, AZ 86326
Based in Chino Valley, 9 mi away
76/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 7 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 7 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 3440 AZ-89, Chino Valley, AZ 86323
Based in Prescott, 11 mi away
76/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 371 Garden St Suite A15, Prescott, AZ 86305
Based in Prescott Valley, 12 mi away
74/100CR ScoreRanked #7 because of its Google rating and trade focus: 3.0★ from 6 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
- 3.0★ from 6 Google reviews
- Address
- 4890 Diamond Ct, Prescott Valley, AZ 86314
Based in Cottonwood, 31 mi away
73/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 37 Google reviews, 37 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 37 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 2825 AZ-89A, Cottonwood, AZ 86326
Based in Chino Valley, 7 mi away
73/100CR ScoreRanked #9 because of its Google rating and review volume: 4.7★ from 29 Google reviews, 29 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 29 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 784 N Rd 1 E, Chino Valley, AZ 86323
#10 KH&F Resources
Based in Verde Village, 37 mi away
71/100CR ScoreRanked #10 because of its Google rating and review volume: 5.0★ from 16 Google reviews, 16 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 16 Google reviews
- Hours
- Mon–Sat 9 AM–5 PM · Sun closed
Based in Cottonwood, 32 mi away
67/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 3 Google reviews, open Sundays until 9 PM.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat closed · Sun 7 AM–9 PM
- Address
- 4767 E Comanche Dr, Cottonwood, AZ 86326
Based in Cottonwood, 30 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Solar hot water system supplier”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 3.7★ from 3 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 506 S 7th St, Cottonwood, AZ 86326
Also serving Williamson
17 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 |
|---|---|---|
| Affordable Window Screens | 12 mi | |
| American Portable Solar | 5 mi | |
| Apex SLR | 33 mi | |
| BoonDockers Power Company, LLC | 3.0★ (2) | 30 mi |
| Canopy Solar | 4.5★ (2) | 15 mi |
| Custom Solar Installs | 1.0★ (2) | 37 mi |
| EVX Solar | 8 mi | |
| I&E Solutions LLC - We Serve Prescott, Williams, Flagstaff (Northern Arizona) | 5.0★ (1) | In Williamson |
| K&E Solar Energy | 6 mi | |
| Monsoon Solar | 37 mi | |
| NORTHERN ARIZONA SOLAR | 11 mi | |
| Prescott Solar: Ground Solar & Rooftop Solar Panel System Installations | 21 mi | |
| SG Solar & Electrical, LLC | 8 mi | |
| Solar Queen Brokerage | 35 mi | |
| Solar Solutions | 12 mi | |
| Solarone Southwest Energy Group | 5.0★ (1) | 20 mi |
| Solarworks | 5.0★ (1) | 30 mi |
How much do solar installers cost in Williamson?
Typical prices in USD, adjusted for Arizona with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $25,190 | $28,490 | $30,990 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.92 Mountain factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Williamson solar installers
We scored 12 Williamson solar installers on 8 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. Unknown factors are left out of the score, 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 Williamson data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Solar installers in Williamson: frequently asked questions
Who is the best solar installer in Williamson?
By CR Score, the highest-ranked solar installer in Williamson, AZ is Precision Powerwash Services LLC with a CR Score of 84/100. It has 5.0★ from 32 Google reviews. It is open 24/7. SolarOne Southwest Energy Group (#2) and AZ Independence Solar (#3) follow. We ranked 12 solar installers on 8 factors, last updated October 22, 2026.
How many solar installers are there in Williamson?
ContractorsRanked ranks 12 solar installers serving Williamson, AZ. Another 17 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which solar installers in Williamson are open 24/7?
1 ranked solar installer in Williamson posts 24/7 hours. The highest-ranked is Precision Powerwash Services LLC (#1). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Williamson work on weekends?
4 of 12 ranked solar installers post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Precision Powerwash Services LLC (#1), AZ Independence Solar (#3) and SunCore Power (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Williamson?
Solar panel installation typically costs $25,190 to $30,990, with $28,490 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.92 Mountain factor (2025 Cost vs. Value Report)). The range is adjusted for Arizona. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Williamson solar installers have?
The median Google rating among 12 rated solar installers in Williamson is 4.9★, with a median of 12 reviews. SolarOne Southwest Energy Group has the most, 82 reviews, and ranks #2. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do solar installers outside Williamson count in this ranking?
Yes, if they are within 40 mi of the Williamson 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 Williamson
- October 2026: CR Scores recalculated for 12 solar installers serving Williamson.
More solar installers and Williamson pages
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