490 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ontario: Mr. Solar Clean, CR Score 79/100; 5.0★ from 369 Google reviews; open 24/7.
Best for emergencies (open 24/7): Solar Express Cleaning, posts 24/7 hours; ranked #2 of 490.
Most-reviewed: Guyou Roofing and Solar, 1,365 Google reviews at 4.9★, the most of 490 ranked; ranked #39.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
490 Ontario solar installers are ranked here by CR Score, from ten published factors. 54 are open 24/7, 284 open Saturdays and 157 open Sundays, based on posted hours. The median Google rating is 5.0★ across 490 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Solar Clean | 79 | 5.0★ (369) | Carson, 37 mi away | 24/7 | Overall |
| 2 | Solar Express Cleaning | 64 | 5.0★ (308) | Chino Hills, 8 mi away | 24/7 | Emergencies |
| 3 | Affordable Solar Cleaning Pros | 63 | 5.0★ (628) | Loma Linda, 23 mi away | 24/7 | — |
| 4 | SoCal Solar Panel Cleaning Company | 62 | 5.0★ (246) | La Verne, 7 mi away | Sat · Sun · Evenings | — |
| 5 | EnergyAid | 62 | 4.8★ (534) | San Bernardino, 21 mi away | 24/7 | — |
| 6 | EnergyAid | 61 | 4.7★ (1,353) | Santa Ana, 25 mi away | 24/7 | — |
| 7 | Pacific Solar Care & Window Cleaning | 60 | 5.0★ (310) | Eastvale, 16 mi away | Sat | — |
| 8 | Semper Solaris | 59 | 4.7★ (515) | Santa Fe Springs, 26 mi away | Sat · Sun · Evenings | — |
| 9 | SoCal Green Homes | 59 | 5.0★ (21) | Altadena, 8 mi away | 24/7 | — |
| 10 | Sunrun Solar | 59 | 4.8★ (262) | Santa Fe Springs, 25 mi away | Sat · Sun | — |
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.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 369 Google reviews, listed on Google as “Solar energy company”.
Based in Chino Hills, 8 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 308 Google reviews, listed on Google as “Solar energy company”.
Based in Loma Linda, 23 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 628 Google reviews, listed on Google as “Solar energy system service”.
Based in La Verne, 7 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 246 Google reviews, listed on Google as “Solar energy company”.
Based in San Bernardino, 21 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 534 Google reviews, listed on Google as “Solar energy system service”.
Based in Santa Ana, 25 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 1,353 Google reviews, listed on Google as “Solar energy company”.
Based in Eastvale, 16 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Solar panel maintenance service”.
Based in Santa Fe Springs, 26 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 515 Google reviews, listed on Google as “Solar energy company”.
Based in Altadena, 8 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Solar energy company”.
Based in Santa Fe Springs, 25 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 262 Google reviews, listed on Google as “Solar energy company”.
Based in Hacienda Heights, 17 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Solar energy system service”.
Based in Anaheim, 19 mi away
Ranked #12 because of its Google rating and review volume: 4.9★ from 322 Google reviews.
Based in Corona, 13 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 559 Google reviews, listed on Google as “Solar energy system service”.
Based in Rancho Cucamonga, 5 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Solar energy company”.
Based in Corona, 15 mi away
Ranked #15 because of its Google rating and trade focus: 4.2★ from 334 Google reviews, listed on Google as “Solar energy company”.
Based in Walnut, 10 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 196 Google reviews, listed on Google as “Solar energy company”.
Based in Good Hope, 27 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 91 Google reviews, listed on Google as “Solar panel maintenance service”.
Based in Fontana, 13 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Solar energy company”.
Based in Santa Ana, 26 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 156 Google reviews, listed on Google as “Solar energy company”.
Based in Anaheim, 30 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 110 Google reviews, listed on Google as “Solar energy company”.
Based in Chino, 7 mi away
Ranked #21 because of its Google rating and trade focus: 4.3★ from 283 Google reviews, listed on Google as “Solar energy company”.
Based in Walnut, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 161 Google reviews, listed on Google as “Solar energy company”.
Based in Riverside, 15 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 174 Google reviews, listed on Google as “Solar energy company”.
Based in Glendora, 13 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 96 Google reviews, listed on Google as “Solar energy company”.
Based in Irvine, 29 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Solar energy company”.
#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 490 ranked solar installers here; the rest are on their profiles.
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 |
|---|---|---|
| ANS Solar, Inc. | In Ontario | |
| Blues Glass Tinting | 4.9★ (75) | In Ontario |
| Empire Solar Energy | In Ontario | |
| Forme Solar - Inland Empire | 5.0★ (2) | 5 mi |
| Gregg Electric Inc | 3.8★ (10) | In Ontario |
| Haticon Solar Inc | 5.0★ (1) | In Ontario |
| Hayat Project | In Ontario | |
| HPM Solar | 5.0★ (2) | 4 mi |
| OC Solar | In Ontario | |
| robertson solar | In Ontario | |
| Solar Electrical Plus INC | 1.0★ (1) | In Ontario |
| Solar My Home Chino | 5.0★ (2) | 4 mi |
| Solar Vast | 1.0★ (2) | 3 mi |
| solarcamera | In Ontario | |
| SolarFeeds | In Ontario | |
| SolarGreen DirectPanel Chino Co | 5.0★ (2) | 6 mi |
| Solartech Power | In Ontario | |
| Sun Energy Partners | 1.0★ (1) | In Ontario |
| Teichert Pipelines | 4.8★ (14) | In Ontario |
| ZenOut Construction Inc. | 2.0★ (2) | 5 mi |
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 |
We scored 490 Ontario 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 23, 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 Ontario 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 |