235 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cos Cob: New York Power Solutions - Smarter Solar, CR Score 88/100; 4.9★ from 248 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Renew Solar Services, posts 24/7 hours; ranked #3 of 235.
Most-reviewed: NY State Solar, 1,072 Google reviews at 4.8★, the most of 235 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
235 Cos Cob solar installers are ranked here by CR Score, from 8 published factors. 25 are open 24/7, 122 open Saturdays and 74 open Sundays, based on posted hours. The median Google rating is 4.9★ across 235 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | New York Power Solutions - Smarter Solar | 88 | 4.9★ (248) | White Plains, 9 mi away | Sat · Sun · Evenings | Overall |
| 2 | Long Island Power Solutions | 87 | 4.9★ (791) | Ronkonkoma, 30 mi away | Sat · Sun · Evenings | — |
| 3 | Renew Solar Services | 87 | 5.0★ (85) | Babylon, 27 mi away | 24/7 | Emergencies |
| 4 | Truth Solar | 86 | 5.0★ (57) | Hauppauge, 25 mi away | 24/7 | — |
| 5 | Sunrun Solar | 86 | 4.6★ (269) | Greenburgh, 12 mi away | Sat · Sun | — |
| 6 | NY State Solar | 86 | 4.8★ (1,072) | Hicksville, 19 mi away | Sat · Evenings | Most reviews |
| 7 | SUNation Energy | 86 | 4.7★ (930) | Ronkonkoma, 30 mi away | Sat · Sun | — |
| 8 | ISP Solar Energy Company | 85 | 5.0★ (30) | Darien, 19 mi away | 24/7 | — |
| 9 | GreenLeaf Solar | 85 | 4.7★ (95) | Centereach, 28 mi away | 24/7 | — |
| 10 | Integrity Solar Solutions | 85 | 4.9★ (122) | New City, 22 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 248 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 30 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 791 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Babylon, 27 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 85 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hauppauge, 25 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 57 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greenburgh, 12 mi away
Ranked #5 because of its Google rating and trade focus: 4.6★ from 269 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hicksville, 19 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 1,072 Google reviews, the most Google reviews on this list (1,072).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 30 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 930 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Darien, 19 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Centereach, 28 mi away
Ranked #9 because of its Google rating and availability: 4.7★ from 95 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New City, 22 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 122 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbury, 18 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 308 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Farmingdale, 22 mi away
Ranked #12 because of its Google rating and trade focus: 4.5★ from 184 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Irvington, 14 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Farmingdale, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 38 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lodi, 28 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 224 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Passaic, 31 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainview, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.4★ from 751 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mahwah, 29 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Briarcliff Manor, 15 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westport, 14 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 80 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Jamaica, 27 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 43 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hicksville, 20 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mahwah, 29 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 623 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 30 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Darien, 7 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 563 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Typical prices in USD, adjusted for Connecticut with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $28,990 | $32,790 | $35,670 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.05 New England factor (2025 Cost vs. Value Report) | October 2026 |
We scored 235 Cos Cob 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 Cos Cob 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 |