90/100CR 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 Altadena, CA (2026)
604 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Altadena: Mr. Solar Clean, CR Score 90/100; 5.0★ from 369 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Solar Express Cleaning, posts 24/7 hours; ranked #2 of 604.
- 22
Most-reviewed: Payless Water Heaters & Plumbing, Inc., 1,762 Google reviews at 4.8★, the most of 604 ranked; ranked #22.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
604 Altadena solar installers are ranked here by CR Score, from 8 published factors. 75 are open 24/7, 343 open Saturdays and 222 open Sundays, based on posted hours. The median Google rating is 5.0★ across 604 rated businesses.
Top 10 solar installers in Altadena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Solar Clean | 90 | 5.0★ (369) | Carson, 25 mi away | 24/7 | Overall |
| 2 | Solar Express Cleaning | 88 | 5.0★ (308) | Chino Hills, 37 mi away | 24/7 | Emergencies |
| 3 | PENNIES A/C - SOLAR & CONSTRUCTION | 88 | 5.0★ (1,560) | Lancaster, 33 mi away | 24/7 | — |
| 4 | SoCal Green Homes | 87 | 5.0★ (21) | Altadena | 24/7 | — |
| 5 | Solar panel maintenance, Solar diagnostic, solar repair and cleaning, bird proofing | 87 | 5.0★ (79) | Burbank, 20 mi away | 24/7 | — |
| 6 | Smart Solar Panel Cleaning Los Angeles | 87 | 5.0★ (90) | Redondo Beach, 26 mi away | 24/7 | — |
| 7 | Green Integrations and Management Inc. | 86 | 5.0★ (100) | Los Angeles, 9 mi away | Sat · Sun · Evenings | — |
| 8 | SoCal Solar Panel Cleaning Company | 86 | 5.0★ (246) | La Verne, 22 mi away | Sat · Sun · Evenings | — |
| 9 | Semper Solaris | 86 | 4.7★ (515) | Santa Fe Springs, 18 mi away | Sat · Sun · Evenings | — |
| 10 | PJ Solar Cleaning & Bird Proofing | 86 | 5.0★ (292) | Barstow, 26 mi away | Sat · Sun · Evenings | — |
The 604 best solar installers in Altadena, 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.
Based in Chino Hills, 37 mi away
88/100CR ScoreRanked #2 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 Lancaster, 33 mi away
88/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 1,560 Google reviews, open 24/7.
- 5.0★ from 1,560 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2851 W Ave L #215, Lancaster, CA 93536
Based in Altadena
87/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Burbank, 20 mi away
87/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 79 Google reviews, open 24/7.
- 5.0★ from 79 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Redondo Beach, 26 mi away
87/100CR ScoreRanked #6 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 Los Angeles, 9 mi away
86/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 100 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 100 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 3108 Glendale Blvd, Los Angeles, CA 90039
Based in La Verne, 22 mi away
86/100CR ScoreRanked #8 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 Santa Fe Springs, 18 mi away
86/100CR ScoreRanked #9 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
Based in Barstow, 26 mi away
86/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 292 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 292 Google reviews
- Hours
- Mon–Sun 6 AM–10 PM
#11 Sunrun Solar
Based in Santa Fe Springs, 18 mi away
86/100CR ScoreRanked #11 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 Los Angeles, 9 mi away
86/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 434 Google reviews, open 24/7.
- 4.9★ from 434 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5467 W San Fernando Rd, Los Angeles, CA 90039
#13 Big Wave Window
Based in Pasadena, 3 mi away
85/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 357 Google reviews, open 24/7.
- 4.8★ from 357 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 41 S Chester Ave Suite A2, Pasadena, CA 91106
Based in Culver City, 20 mi away
85/100CR ScoreRanked #14 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
Based in Whittier, 15 mi away
85/100CR ScoreRanked #15 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
Based in Los Angeles, 19 mi away
85/100CR ScoreRanked #16 because of its Google rating and availability: 5.0★ from 27 Google reviews, open 24/7.
- 5.0★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3616 Cardiff Ave #104, Los Angeles, CA 90034
#17 EnergyAid
Based in Santa Ana, 36 mi away
85/100CR ScoreRanked #17 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
#18 Sun Studios
Based in Beverly Hills, 16 mi away
85/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 77 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 77 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 8383 Wilshire Blvd, Beverly Hills, CA 90211
Based in Hacienda Heights, 18 mi away
84/100CR 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 Los Angeles, 16 mi away
84/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 66 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 66 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 5316 Venice Blvd., Los Angeles, CA 90019
#21 HomeLink Solar
Based in Santa Clarita, 25 mi away
84/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 183 Google reviews, listed on Google as “Solar energy company”.
- 4.8★ from 183 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 9 AM–2 PM
- Address
- 18954 Soledad Canyon Rd, Canyon Country, CA 91351
Based in Santa Clarita, 30 mi away
84/100CR ScoreRanked #22 because of its Google rating and availability: 4.8★ from 1,762 Google reviews, open 24/7.
- 4.8★ from 1,762 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 27919 Smyth Dr, Santa Clarita, CA 91355
Based in Long Beach, 29 mi away
84/100CR ScoreRanked #23 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 Los Angeles, 12 mi away
84/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 45 Google reviews, listed on Google as “Solar energy company”.
- 4.9★ from 45 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat 9 AM–4 PM · Sun 10 AM–7 PM
- Address
- 360 E 2nd St, Los Angeles, CA 90012
Based in Los Angeles, 11 mi away
83/100CR ScoreRanked #25 because of its Google rating and availability: 4.8★ from 272 Google reviews, open 24/7.
- 4.8★ from 272 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1612 Sunset Blvd, Los Angeles, CA 90026
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 604 ranked solar installers here; the rest are on their profiles.
Also serving Altadena
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 |
|---|---|---|
| Bright Spot Solar | 5.0★ (2) | 14 mi |
| Burning Daylight Solar | 5.0★ (2) | 19 mi |
| California Solar Energy & Green Group | 5.0★ (2) | 15 mi |
| Choice Energy Consultants | 5.0★ (2) | 19 mi |
| Cis Roofing Waterproofing Solar | 5.0★ (2) | 3 mi |
| Duncan Solar | 5.0★ (2) | 16 mi |
| Glass Of The Sun Solar | 5.0★ (2) | 15 mi |
| Hillside General Construction and Electrical | 5.0★ (11) | In Altadena |
| Inception Home and Remodeling | 3.0★ (2) | 19 mi |
| IndieSolar Inc. | In Altadena | |
| Jeremy's Electric / Solar for Less | 5.0★ (2) | 10 mi |
| Lux Smart Energy | 5.0★ (2) | 17 mi |
| Mario Fard. Solar Consultant | 5.0★ (2) | 17 mi |
| RenuLogix | 5.0★ (2) | 3 mi |
| SM Remodeling Solar Energy | 5.0★ (1) | In Altadena |
| Solar Plus | 4.5★ (2) | 8 mi |
| Solar Scrubbers | 5.0★ (2) | 17 mi |
| Solar Store California | 3.0★ (2) | 12 mi |
| solar tronics | 3.0★ (2) | In Altadena |
| SunSpark Energy | 5.0★ (2) | 19 mi |
How much do solar installers cost in Altadena?
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 Altadena solar installers
We scored 604 Altadena 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 Altadena 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 Altadena: frequently asked questions
Who is the best solar installer in Altadena?
By CR Score, the highest-ranked solar installer in Altadena, CA is Mr. Solar Clean with a CR Score of 90/100. It has 5.0★ from 369 Google reviews. It is open 24/7. Solar Express Cleaning (#2) and PENNIES A/C - SOLAR & CONSTRUCTION (#3) follow. We ranked 604 solar installers on 8 factors, last updated October 22, 2026.
How many solar installers are there in Altadena?
ContractorsRanked ranks 604 solar installers serving Altadena, CA. 1 of them is based in Altadena; 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 Altadena are open 24/7?
75 ranked solar installers in Altadena post 24/7 hours. The highest-ranked are Mr. Solar Clean (#1), Solar Express Cleaning (#2) and PENNIES A/C - SOLAR & CONSTRUCTION (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Altadena work on weekends?
343 of 604 ranked solar installers post Saturday hours and 222 post Sunday hours. The highest-ranked open Saturdays are Mr. Solar Clean (#1), Solar Express Cleaning (#2) and PENNIES A/C - SOLAR & CONSTRUCTION (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Altadena?
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 Altadena solar installers have?
The median Google rating among 604 rated solar installers in Altadena is 5.0★, with a median of 14 reviews. Payless Water Heaters & Plumbing, Inc. has the most, 1,762 reviews, and ranks #22. 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 Altadena count in this ranking?
Yes, if they are within 40 mi of the Altadena 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 Altadena
- October 2026: CR Scores recalculated for 604 solar installers serving Altadena.
- October 2026: 6 duplicate listings merged.
More solar installers and Altadena pages
Solar installers near Altadena
- Solar installers in Pasadena, CA610 ranked
- Solar installers in La Cañada Flintridge, CA571 ranked
- Solar installers in East Pasadena, CA646 ranked
- Solar installers in Sierra Madre, CA634 ranked
- Solar installers in San Marino, CA638 ranked
- Solar installers in South Pasadena, CA630 ranked
- Solar installers in Arcadia, CA645 ranked
- Solar installers in Alhambra, CA643 ranked
- Solar installers in San Gabriel, CA646 ranked
- Solar installers in La Crescenta-Montrose, CA546 ranked
Other trades in Altadena
- Roofers in Altadena2042 ranked
- Plumbers in Altadena1422 ranked
- Electricians in Altadena1066 ranked
- HVAC contractors in Altadena1520 ranked
- General contractors in Altadena1673 ranked
- Painters in Altadena222 ranked
- Landscapers in Altadena135 ranked
- Handymen in Altadena145 ranked
- Kitchen remodelers in Altadena786 ranked
- Bathroom remodelers in Altadena769 ranked
- Flooring contractors in Altadena498 ranked
- Tile installers in Altadena70 ranked
- Drywall contractors in Altadena20 ranked
- Concrete contractors in Altadena348 ranked
- Fence contractors in Altadena372 ranked
- Deck builders in Altadena153 ranked
- Siding contractors in Altadena110 ranked
- Window installers in Altadena633 ranked
- Gutter installers in Altadena175 ranked
- Insulation contractors in Altadena209 ranked
- Garage door repair companies in Altadena312 ranked
- Foundation repair companies in Altadena242 ranked
- Tree services in Altadena273 ranked
- Masonry contractors in Altadena175 ranked
- Water damage restoration companies in Altadena1207 ranked
- Home builders in Altadena792 ranked
- Demolition contractors in Altadena141 ranked
- All contractors in Altadena