92/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 369 Google reviews, open 24/7.
- 5.0★ from 369 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1714 E Balard St, Carson, CA 90745
Best Solar Installers in Westminster, CA (2026)
551 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Westminster: Mr. Solar Clean, CR Score 92/100; 5.0★ from 369 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): EnergyAid, posts 24/7 hours; ranked #2 of 551.
- 2
Most-reviewed: EnergyAid, 1,353 Google reviews at 4.7★, the most of 551 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
551 Westminster solar installers are ranked here by CR Score, from 8 published factors. 68 are open 24/7, 314 open Saturdays and 193 open Sundays, based on posted hours. The median Google rating is 5.0★ across 551 rated businesses.
Top 10 solar installers in Westminster at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Solar Clean | 92 | 5.0★ (369) | Carson, 15 mi away | 24/7 | Overall |
| 2 | EnergyAid | 89 | 4.7★ (1,353) | Santa Ana, 10 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Solar Express Cleaning | 88 | 5.0★ (308) | Chino Hills, 34 mi away | 24/7 | — |
| 4 | Good Energy Network | 87 | 5.0★ (43) | Irvine, 10 mi away | 24/7 | — |
| 5 | Smart Solar Panel Cleaning Los Angeles | 87 | 5.0★ (90) | Redondo Beach, 22 mi away | 24/7 | — |
| 6 | Guru Solar Cleaning LLC | 87 | 5.0★ (132) | Long Beach, 8 mi away | Sat · Sun | — |
| 7 | Semper Solaris | 87 | 4.7★ (515) | Santa Fe Springs, 13 mi away | Sat · Sun · Evenings | — |
| 8 | Sunrun Solar | 86 | 4.8★ (262) | Santa Fe Springs, 13 mi away | Sat · Sun | — |
| 9 | Solar Sparkle | 86 | 5.0★ (110) | Anaheim, 13 mi away | Sat · Sun · Evenings | — |
| 10 | Aikyum Solar | 86 | 4.9★ (59) | Westminster | Sat · Sun · Evenings | — |
The 551 best solar installers in Westminster, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
#2 EnergyAid
Based in Santa Ana, 10 mi away
89/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 1,353 Google reviews, listed on Google as “Solar energy company”.
- 4.7★ from 1,353 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1669 E Wilshire Ave STE 606, Santa Ana, CA 92705
Based in Chino Hills, 34 mi away
88/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 308 Google reviews, open 24/7.
- 5.0★ from 308 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Irvine, 10 mi away
87/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 43 Google reviews, open 24/7.
- 5.0★ from 43 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2211 Michelson Dr Suite 900, Irvine, CA 92612
Based in Redondo Beach, 22 mi away
87/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 90 Google reviews, open 24/7.
- 5.0★ from 90 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2612 Carnegie Ln #1, Redondo Beach, CA 90278
Based in Long Beach, 8 mi away
87/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 132 Google reviews, listed on Google as “Solar panel maintenance service”.
- 5.0★ from 132 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 8 AM–2 PM
- Address
- 767 Euclid Ave, Long Beach, CA 90804
Based in Santa Fe Springs, 13 mi away
87/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 515 Google reviews, listed on Google as “Solar energy company”.
- 4.7★ from 515 Google reviews
- Hours
- Mon–Sat 7 AM–12 AM · Sun 9 AM–12 AM
- Address
- 10713 Norwalk Blvd, Santa Fe Springs, CA 90670
#8 Sunrun Solar
Based in Santa Fe Springs, 13 mi away
86/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 262 Google reviews, listed on Google as “Solar energy company”.
- 4.8★ from 262 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 12830 Romandel Ave, Santa Fe Springs, CA 90670
Based in Anaheim, 13 mi away
86/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 110 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 110 Google reviews
- Hours
- Mon–Sun 8 AM–10 PM
#10 Aikyum Solar
Based in Westminster
86/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 59 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 59 Google reviews
- Hours
- Mon–Fri 5 AM–8 PM · Sat–Sun 7 AM–5 PM
- Address
- 7256 Garden Grove Blvd, Westminster, CA 92683
Based in Anaheim, 21 mi away
86/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 322 Google reviews, open 24/7.
- 4.9★ from 322 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Irvine, 10 mi away
86/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 99 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 99 Google reviews
- Hours
- Mon–Sun 8:30 AM–8 PM
- Address
- 17952 Sky Park Cir Suite D, Irvine, CA 92614
#13 Semper Solaris
Based in Santa Ana, 10 mi away
85/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 156 Google reviews, listed on Google as “Solar energy company”.
- 4.7★ from 156 Google reviews
- Hours
- Mon–Sat 7 AM–12 AM · Sun 9 AM–12 AM
- Address
- 1701 E Edinger Ave Suite H1, Santa Ana, CA 92705
Based in La Verne, 28 mi away
85/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 246 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 246 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat 7 AM–8 PM · Sun 7 AM–5 PM
- Address
- 2552 Foothill Blvd APT 322, La Verne, CA 91750
Based in Huntington Beach, 3 mi away
85/100CR ScoreRanked #15 because of its Google rating and availability: 5.0★ from 161 Google reviews, open 24/7.
- 5.0★ from 161 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6762 Warner Ave, Huntington Beach, CA 92647
Based in Echo Park, 6 mi away
85/100CR ScoreRanked #16 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
- 5.0★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Whittier, 16 mi away
85/100CR ScoreRanked #17 because of its Google rating and availability: 4.9★ from 148 Google reviews, open 24/7.
- 4.9★ from 148 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11721 Whittier Blvd, Whittier, CA 90601
#18 SunSolar U.S.
Based in Irvine, 10 mi away
85/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 62 Google reviews
- Hours
- Mon–Sun 9 AM–8 PM
- Address
- 16755 Von Karman Ave Suite 200, Irvine, CA 92606
Based in Hacienda Heights, 17 mi away
85/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Solar energy system service”.
- 5.0★ from 81 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun 7 AM–5 PM
- Address
- 17009 Pepper Brook Way, Hacienda Heights, CA 91745
Based in Alhambra, 6 mi away
85/100CR ScoreRanked #20 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–Sun 7 AM–6 PM
Based in Artesia, 9 mi away
84/100CR ScoreRanked #21 because of its Google rating and availability: 4.6★ from 14 Google reviews, open 24/7.
- 4.6★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17306 Roseton Ave, Artesia, CA 90701
Based in Long Beach, 9 mi away
84/100CR ScoreRanked #22 because of its Google rating and availability: 4.7★ from 11 Google reviews, open 24/7.
- 4.7★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 315 Hermosa Ave, Long Beach, CA 90802
Based in Culver City, 27 mi away
84/100CR ScoreRanked #23 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5701 Buckingham Pkwy Ste F, Culver City, CA 90230
#24 Sunrun Solar
Based in Irvine, 18 mi away
84/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 231 Google reviews, listed on Google as “Solar energy company”.
- 4.6★ from 231 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 8 Whatney, Irvine, CA 92618
Based in Bellflower, 15 mi away
83/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “Solar panel maintenance service”.
- 4.9★ from 56 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun 10 AM–5 PM
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 551 ranked solar installers here; the rest are on their profiles.
Also serving Westminster
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 |
|---|---|---|
| Alacrity Energy | 5.0★ (2) | 11 mi |
| All Covered Solar Solutions | 5.0★ (2) | 7 mi |
| American Energy Networks | 5.0★ (2) | 11 mi |
| California Solar | 5.0★ (2) | 6 mi |
| Chronicle Electric Inc. | 3.0★ (2) | 8 mi |
| Duncan Solar | 5.0★ (2) | 15 mi |
| Effective solar LLC | 1.0★ (2) | 10 mi |
| Luxe Solar Cleaning | 5.0★ (2) | 2 mi |
| Panel Scrub, LLC. | 5.0★ (2) | 10 mi |
| Shorebreak Energy | 5.0★ (2) | 9 mi |
| solar cell | 5.0★ (2) | 10 mi |
| Solar Grande Construction, Inc. | 5.0★ (2) | 10 mi |
| Solar Messenger | 5.0★ (2) | 6 mi |
| Solar Watt Solutions | 5.0★ (2) | 12 mi |
| Solariant, Inc. | 5.0★ (2) | 8 mi |
| SolarPanel RoofNSave Buena | 5.0★ (2) | 8 mi |
| sunshine Pacific group America Inc | 3.0★ (2) | 13 mi |
| Thomas Solar Energy | In Westminster | |
| VietSolar.com | 3.0★ (2) | In Westminster |
| Zenith Solar Installation Garden Grove | 1.0★ (2) | 1 mi |
How much do solar installers cost in Westminster?
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 Westminster solar installers
We scored 551 Westminster 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 Westminster 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 Westminster: frequently asked questions
Who is the best solar installer in Westminster?
By CR Score, the highest-ranked solar installer in Westminster, CA is Mr. Solar Clean with a CR Score of 92/100. It has 5.0★ from 369 Google reviews. It is open 24/7. EnergyAid (#2) and Solar Express Cleaning (#3) follow. We ranked 551 solar installers on 8 factors, last updated October 22, 2026.
How many solar installers are there in Westminster?
ContractorsRanked ranks 551 solar installers serving Westminster, CA. 1 of them is based in Westminster; 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 Westminster are open 24/7?
68 ranked solar installers in Westminster post 24/7 hours. The highest-ranked are Mr. Solar Clean (#1), EnergyAid (#2) and Solar Express Cleaning (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Westminster work on weekends?
314 of 551 ranked solar installers post Saturday hours and 193 post Sunday hours. The highest-ranked open Saturdays are Mr. Solar Clean (#1), EnergyAid (#2) and Solar Express Cleaning (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Westminster?
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 Westminster solar installers have?
The median Google rating among 551 rated solar installers in Westminster is 5.0★, with a median of 13 reviews. EnergyAid has the most, 1,353 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 Westminster count in this ranking?
Yes, if they are within 40 mi of the Westminster 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 Westminster
- October 2026: CR Scores recalculated for 551 solar installers serving Westminster.
- October 2026: 7 duplicate listings merged.
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