93/100CR 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 Downey, CA (2026)
623 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Downey: Mr. Solar Clean, CR Score 93/100; 5.0★ from 369 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Smart Solar Panel Cleaning Los Angeles, posts 24/7 hours; ranked #2 of 623.
- 6
Most-reviewed: EnergyAid, 1,353 Google reviews at 4.7★, the most of 623 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
623 Downey solar installers are ranked here by CR Score, from 8 published factors. 77 are open 24/7, 354 open Saturdays and 224 open Sundays, based on posted hours. The median Google rating is 5.0★ across 623 rated businesses.
Top 10 solar installers in Downey at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Solar Clean | 93 | 5.0★ (369) | Carson, 9 mi away | 24/7 | Overall |
| 2 | Smart Solar Panel Cleaning Los Angeles | 89 | 5.0★ (90) | Redondo Beach, 14 mi away | 24/7 | Emergencies |
| 3 | Semper Solaris | 88 | 4.7★ (515) | Santa Fe Springs, 3 mi away | Sat · Sun · Evenings | — |
| 4 | Sunrun Solar | 88 | 4.8★ (262) | Santa Fe Springs, 4 mi away | Sat · Sun | — |
| 5 | Solar Express Cleaning | 88 | 5.0★ (308) | Chino Hills, 36 mi away | 24/7 | — |
| 6 | EnergyAid | 87 | 4.7★ (1,353) | Santa Ana, 22 mi away | 24/7 | Most reviews |
| 7 | POWER PRO ELECTRIC & SOLAR | 86 | 4.9★ (148) | Whittier, 6 mi away | 24/7 | — |
| 8 | Guru Solar Cleaning LLC | 86 | 5.0★ (132) | Long Beach, 11 mi away | Sat · Sun | — |
| 9 | SoCal Solar Panel Cleaning Company | 86 | 5.0★ (246) | La Verne, 25 mi away | Sat · Sun · Evenings | — |
| 10 | ProSolar California | 86 | 5.0★ (31) | Culver City, 15 mi away | 24/7 | — |
The 623 best solar installers in Downey, 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 Redondo Beach, 14 mi away
89/100CR ScoreRanked #2 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 Santa Fe Springs, 3 mi away
88/100CR ScoreRanked #3 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
#4 Sunrun Solar
Based in Santa Fe Springs, 4 mi away
88/100CR ScoreRanked #4 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 Chino Hills, 36 mi away
88/100CR ScoreRanked #5 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
#6 EnergyAid
Based in Santa Ana, 22 mi away
87/100CR ScoreRanked #6 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 Whittier, 6 mi away
86/100CR ScoreRanked #7 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 Long Beach, 11 mi away
86/100CR ScoreRanked #8 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 La Verne, 25 mi away
86/100CR ScoreRanked #9 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 Culver City, 15 mi away
86/100CR ScoreRanked #10 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
#11 Solar with Roció
Based in Downey
86/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 45 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 8050 Florence Ave, Downey, CA 90241
Based in Los Angeles, 14 mi away
85/100CR ScoreRanked #12 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 Burbank, 31 mi away
85/100CR ScoreRanked #13 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 Hacienda Heights, 12 mi away
85/100CR ScoreRanked #14 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
85/100CR ScoreRanked #15 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
Based in Irvine, 24 mi away
85/100CR ScoreRanked #16 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 Bellflower, 7 mi away
85/100CR ScoreRanked #17 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
Based in Artesia, 5 mi away
85/100CR ScoreRanked #18 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 Echo Park, 9 mi away
84/100CR ScoreRanked #19 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
#20 Sun Studios
Based in Beverly Hills, 16 mi away
84/100CR ScoreRanked #20 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 Los Angeles, 17 mi away
84/100CR ScoreRanked #21 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
Based in Los Angeles, 15 mi away
84/100CR ScoreRanked #22 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
Based in Anaheim, 30 mi away
84/100CR ScoreRanked #23 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 Alhambra, 9 mi away
84/100CR ScoreRanked #24 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
#25 Aikyum Solar
Based in Westminster, 14 mi away
84/100CR ScoreRanked #25 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
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 623 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Energy Time Solar | 84 | 4.9★ (45) | 10 mi |
| 27 | Solar Sparkle | 84 | 5.0★ (110) | 27 mi |
| 28 | Big Wave Window | 83 | 4.8★ (357) | 14 mi |
| 29 | Innovative Electric Solar | 83 | 4.7★ (11) | 12 mi |
| 30 | NetZero Energy & Roofing | 83 | 4.9★ (99) | 23 mi |
| 31 | Paz Window Cleaning LLC | 83 | 5.0★ (133) | 13 mi |
| 32 | United Plumbing Heating Air & Electric | 83 | 4.8★ (272) | 12 mi |
| 33 | So Cal Solar Shine LLC | 83 | 5.0★ (5) | 7 mi |
| 34 | Semper Solaris | 83 | 4.7★ (156) | 22 mi |
| 35 | Haven Energy | 83 | 4.7★ (158) | 21 mi |
| 36 | Atlas Inc. | 83 | 5.0★ (15) | 22 mi |
| 37 | DNP Solar Care Professionals LLC | 83 | 5.0★ (3) | 4 mi |
| 38 | Pacific Property Care, LLC. | 83 | 5.0★ (161) | 17 mi |
| 39 | SunSolar U.S. | 83 | 5.0★ (62) | 24 mi |
| 40 | SoCal Green Homes | 82 | 5.0★ (21) | 29 mi |
| 41 | Sun4good | 82 | 5.0★ (8) | 17 mi |
| 42 | Sunee Cleaning | 82 | 5.0★ (7) | 16 mi |
| 43 | Veteran Solar Cleaning | 82 | 5.0★ (27) | 14 mi |
| 44 | PV Sky USA | 82 | 5.0★ (7) | 17 mi |
| 45 | Donavas | 82 | 5.0★ (7) | 10 mi |
| 46 | Solar Optimum Glendale | 82 | 4.7★ (348) | 18 mi |
| 47 | Solar G | 82 | 5.0★ (128) | 16 mi |
| 48 | Sunrun Solar | 82 | 4.6★ (231) | 32 mi |
| 49 | HomeLink Solar | 81 | 4.8★ (183) | 38 mi |
| 50 | N Clean Energy | 81 | 5.0★ (5) | 17 mi |
Also serving Downey
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) | 8 mi |
| Best Solar Company Rowland Heights | 5.0★ (2) | 14 mi |
| California Solar Energy & Green Group | 5.0★ (2) | 3 mi |
| Chronicle Electric Inc. | 3.0★ (2) | 6 mi |
| Duncan Solar | 5.0★ (2) | 4 mi |
| Effective solar LLC | 1.0★ (2) | 11 mi |
| Irod electrical | 5.0★ (3) | In Downey |
| LITENERGY Solar Panel Installation Downey | 1.0★ (1) | In Downey |
| Next Level Home Improvements LLC | 4.8★ (16) | In Downey |
| Resonance Solar Installation | 5.0★ (2) | 13 mi |
| Saiyan Electric Inc | 4.9★ (54) | In Downey |
| Socal Electrical | 4.9★ (15) | In Downey |
| solar cell | 5.0★ (2) | 11 mi |
| Solar Grande Construction, Inc. | 5.0★ (2) | 11 mi |
| Solar Store California | 3.0★ (2) | 13 mi |
| Solariant, Inc. | 5.0★ (2) | 7 mi |
| SolarPanel RoofNSave Buena | 5.0★ (2) | 8 mi |
| sunshine Pacific group America Inc | 3.0★ (2) | 13 mi |
| Tesla Solar | 5.0★ (1) | In Downey |
| Zenith Solar Installation Garden Grove | 1.0★ (2) | 14 mi |
How much do solar installers cost in Downey?
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 Downey solar installers
We scored 623 Downey 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 Downey 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 Downey: frequently asked questions
Who is the best solar installer in Downey?
By CR Score, the highest-ranked solar installer in Downey, CA is Mr. Solar Clean with a CR Score of 93/100. It has 5.0★ from 369 Google reviews. It is open 24/7. Smart Solar Panel Cleaning Los Angeles (#2) and Semper Solaris (#3) follow. We ranked 623 solar installers on 8 factors, last updated October 22, 2026.
How many solar installers are there in Downey?
ContractorsRanked ranks 623 solar installers serving Downey, CA. 1 of them is based in Downey; 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 Downey are open 24/7?
77 ranked solar installers in Downey post 24/7 hours. The highest-ranked are Mr. Solar Clean (#1), Smart Solar Panel Cleaning Los Angeles (#2) and Solar Express Cleaning (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Downey work on weekends?
354 of 623 ranked solar installers post Saturday hours and 224 post Sunday hours. The highest-ranked open Saturdays are Mr. Solar Clean (#1), Smart Solar Panel Cleaning Los Angeles (#2) and Semper Solaris (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Downey?
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 Downey solar installers have?
The median Google rating among 623 rated solar installers in Downey is 5.0★, with a median of 14 reviews. EnergyAid has the most, 1,353 reviews, and ranks #6. 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 Downey count in this ranking?
Yes, if they are within 40 mi of the Downey 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 Downey
- October 2026: CR Scores recalculated for 623 solar installers serving Downey.
- October 2026: 6 duplicate listings merged.
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