365 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Grand Terrace: Affordable Solar Cleaning Pros, CR Score 66/100; 5.0★ from 628 Google reviews; open 24/7.
Best for emergencies (open 24/7): EnergyAid, posts 24/7 hours; ranked #2 of 365.
Most-reviewed: Guyou Roofing and Solar, 1,365 Google reviews at 4.9★, the most of 365 ranked; ranked #22.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
365 Grand Terrace solar installers are ranked here by CR Score, from ten published factors. 32 are open 24/7, 198 open Saturdays and 102 open Sundays, based on posted hours. The median Google rating is 4.9★ across 365 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Affordable Solar Cleaning Pros | 66 | 5.0★ (628) | Loma Linda, 5 mi away | 24/7 | Overall |
| 2 | EnergyAid | 65 | 4.8★ (534) | San Bernardino, 2 mi away | 24/7 | Emergencies |
| 3 | Solar Express Cleaning | 64 | 5.0★ (308) | Chino Hills, 12 mi away | 24/7 | — |
| 4 | SoCal Solar Panel Cleaning Company | 60 | 5.0★ (246) | La Verne, 26 mi away | Sat · Sun · Evenings | — |
| 5 | Pacific Solar Care & Window Cleaning | 60 | 5.0★ (310) | Eastvale, 20 mi away | Sat | — |
| 6 | EnergyAid | 59 | 4.7★ (1,353) | Santa Ana, 37 mi away | 24/7 | — |
| 7 | FlowState Solar Cleaning | 59 | 5.0★ (91) | Good Hope, 16 mi away | Sat · Sun · Evenings | — |
| 8 | Semper Solaris | 59 | 4.7★ (64) | Redlands, 6 mi away | Sat · Sun · Evenings | — |
| 9 | Burgeson's Heating, A/C, Electrical, Solar & Plumbing | 59 | 4.8★ (1,032) | Redlands, 7 mi away | Sat · Evenings | — |
| 10 | Option One Solar | 59 | 4.9★ (346) | Apple Valley, 33 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 628 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Bernardino, 2 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 534 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chino Hills, 12 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 308 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in La Verne, 26 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Eastvale, 20 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Ana, 37 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Good Hope, 16 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 91 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Redlands, 6 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 64 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Redlands, 7 mi away
Ranked #9 because of its Google rating and review volume: 4.8★ from 1,032 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Apple Valley, 33 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 346 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 2 mi away
Ranked #11 because of its Google rating and review volume: 4.6★ from 356 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Anaheim, 25 mi away
Ranked #12 because of its Google rating and review volume: 4.9★ from 322 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Elsinore, 25 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hemet, 26 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 91 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 3 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Solar energy system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Riverside, 7 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fontana, 13 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 3 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 17 mi away
Ranked #19 because of its Google rating and trade focus: 4.2★ from 334 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 14 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 174 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 12 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 12 mi away
Ranked #22 because of its Google rating and review volume: 4.9★ from 1,365 Google reviews, the most in Grand Terrace.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 4 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 95 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 20 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 559 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 2 mi away
Ranked #25 because of its Google rating and trade focus: 4.1★ from 185 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 365 Grand Terrace 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 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 Grand Terrace 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 |