70 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Gresham: AAA Heating & Cooling, CR Score 87/100; 4.9★ from 1,417 Google reviews; open 24/7.
Best for emergencies (open 24/7): Solar Energy Solutions, posts 24/7 hours; ranked #2 of 70.
Most-reviewed: SunPower®, 642 Google reviews at 4.4★, the most of 70 ranked after AAA Heating & Cooling; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
70 Gresham solar installers are ranked here by CR Score, from 8 published factors. 9 are open 24/7, 29 open Saturdays and 20 open Sundays, based on posted hours. The median Google rating is 4.9★ across 70 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | AAA Heating & Cooling | 87 | 4.9★ (1,417) | Portland, 14 mi away | 24/7 | Overall |
| 2 | Solar Energy Solutions | 85 | 4.8★ (16) | Portland, 9 mi away | 24/7 | Emergencies |
| 3 | Nate's Solar Clean | 84 | 5.0★ (56) | Beaverton, 14 mi away | Sat · Sun · Evenings | — |
| 4 | Stanley Roof and Solar | 83 | 5.0★ (54) | Vancouver, 17 mi away | 24/7 | — |
| 5 | Smart Solar Energy Portland Oregon | 83 | 5.0★ (30) | West Slope, 13 mi away | Sat · Sun | — |
| 6 | HOMEMASTERS Portland East | 82 | 4.7★ (95) | Damascus, 6 mi away | 24/7 | — |
| 7 | Ray Solar | 81 | 4.3★ (3) | Saint Helens, 12 mi away | 24/7 | — |
| 8 | SunPower® | 81 | 4.4★ (642) | Portland, 15 mi away | Sat · Evenings | Most reviews |
| 9 | Sunward Power | 81 | 5.0★ (47) | Clackamas, 9 mi away | Sat · Evenings | — |
| 10 | HOMEMASTERS Battle Ground | 81 | 4.9★ (87) | Battle Ground, 19 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,417 Google reviews, the most Google reviews on this list (1,417).
Based in Portland, 9 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 16 Google reviews, open 24/7.
Based in Beaverton, 14 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 56 Google reviews, listed on Google as “Solar panel maintenance service”.
Based in Vancouver, 17 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 54 Google reviews, open 24/7.
Based in West Slope, 13 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy company”.
Based in Damascus, 6 mi away
Ranked #6 because of its Google rating and availability: 4.7★ from 95 Google reviews, open 24/7.
Based in Saint Helens, 12 mi away
Ranked #7 because of its Google rating and availability: 4.3★ from 3 Google reviews, open 24/7.
Based in Portland, 15 mi away
Ranked #8 because of its Google rating and trade focus: 4.4★ from 642 Google reviews, listed on Google as “Solar energy company”.
Based in Clackamas, 9 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Solar energy company”.
Based in Battle Ground, 19 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 87 Google reviews, open 24/7.
Based in Oregon City, 14 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 69 Google reviews, listed on Google as “Solar energy company”.
Based in Forest Grove, 16 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 55 Google reviews, open 24/7.
Based in Ridgefield, 20 mi away
Ranked #13 because of its Google rating and availability: 4.7★ from 98 Google reviews, open 24/7.
Based in Portland, 10 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Solar energy company”.
Based in Portland, 14 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 142 Google reviews, listed on Google as “Solar energy company”.
Based in West Slope, 18 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Solar energy company”.
Based in Washougal, 6 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Solar energy company”.
Based in Portland, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Solar energy company”.
Based in Portland, 13 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar energy company”.
Based in Oregon City, 13 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar energy company”.
Based in Bethany, 25 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based in Fairview, 3 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 282 Google reviews, listed on Google as “Solar energy company”.
Based in Damascus, 6 mi away
Ranked #23 because of its Google rating and review volume: 4.9★ from 168 Google reviews, 168 Google reviews.
Based in Portland, 11 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Solar energy company”.
Based in Portland, 7 mi away
Ranked #25 because of its Google rating and trade focus: 4.4★ from 472 Google reviews, listed on Google as “Solar energy company”.
Typical prices in USD, adjusted for Oregon 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 70 Gresham 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 Gresham 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 |