232 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Darien: Long Island Power Solutions, CR Score 62/100; 4.9★ from 791 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): ISP Solar Energy Company, posts 24/7 hours; ranked #3 of 232.
Most-reviewed: NY State Solar, 1,072 Google reviews at 4.8★, the most of 232 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
232 Darien solar installers are ranked here by CR Score, from ten published factors. 27 are open 24/7, 122 open Saturdays and 77 open Sundays, based on posted hours. The median Google rating is 4.9★ across 232 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Long Island Power Solutions | 62 | 4.9★ (791) | Ronkonkoma, 27 mi away | Sat · Sun · Evenings | Overall |
| 2 | New York Power Solutions - Smarter Solar | 61 | 4.9★ (248) | White Plains, 16 mi away | Sat · Sun · Evenings | — |
| 3 | ISP Solar Energy Company | 61 | 5.0★ (30) | Darien | 24/7 | Emergencies |
| 4 | NY State Solar | 61 | 4.8★ (1,072) | Hicksville, 22 mi away | Sat · Evenings | Most reviews |
| 5 | SUNation Energy | 61 | 4.7★ (930) | Ronkonkoma, 27 mi away | Sat · Sun | — |
| 6 | Empower Energy Solutions | 61 | 4.7★ (563) | Darien | — | — |
| 7 | Freedom Power Solutions | 59 | 5.0★ (189) | West Hills, 38 mi away | 24/7 | — |
| 8 | Renew Solar Services | 59 | 5.0★ (85) | Babylon, 27 mi away | 24/7 | — |
| 9 | Sunrun Solar | 59 | 4.6★ (269) | Greenburgh, 19 mi away | Sat · Sun | — |
| 10 | Truth Solar | 59 | 5.0★ (57) | Hauppauge, 23 mi away | 24/7 | — |
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: 4.9★ from 791 Google reviews, listed on Google as “Solar energy company”.
Based in White Plains, 16 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 248 Google reviews, listed on Google as “Solar energy company”.
Based in Darien
Ranked #3 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy company”.
Based in Hicksville, 22 mi away
Ranked #4 because of its Google rating and review volume: 4.8★ from 1,072 Google reviews, the most in Darien.
Based in Ronkonkoma, 27 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 930 Google reviews, listed on Google as “Solar energy company”.
Based in Darien
Ranked #6 because of its Google rating and trade focus: 4.7★ from 563 Google reviews, listed on Google as “Solar energy company”.
Based in West Hills, 38 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 189 Google reviews, listed on Google as “Solar energy company”.
Based in Babylon, 27 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 85 Google reviews, listed on Google as “Solar energy company”.
Based in Greenburgh, 19 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 269 Google reviews, listed on Google as “Solar energy company”.
Based in Hauppauge, 23 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Solar energy company”.
Based in Centereach, 24 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 95 Google reviews, listed on Google as “Solar energy company”.
Based in Westport, 7 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 80 Google reviews, listed on Google as “Solar energy company”.
Based in Plainview, 20 mi away
Ranked #13 because of its Google rating and trade focus: 4.4★ from 751 Google reviews, listed on Google as “Solar energy company”.
Based in Westbury, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 308 Google reviews, listed on Google as “Solar energy company”.
Based in New City, 28 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 122 Google reviews, listed on Google as “Solar energy company”.
Based in Farmingdale, 23 mi away
Ranked #16 because of its Google rating and trade focus: 4.5★ from 184 Google reviews, listed on Google as “Solar energy company”.
Based in White Plains, 16 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “Solar energy company”.
Based in Darien
Ranked #18 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based in Mahwah, 36 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 623 Google reviews, listed on Google as “Solar energy company”.
Based in Briarcliff Manor, 19 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “Solar energy company”.
Based in Norwalk, 4 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Solar energy system service”.
Based in Farmingdale, 23 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 38 Google reviews, listed on Google as “Solar energy company”.
Based in Ronkonkoma, 27 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Solar energy company”.
Based in Coram, 26 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Solar energy company”.
Based in Calverton, 31 mi away
Ranked #25 because of its Google rating and review volume: 5.0★ from 270 Google reviews.
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 232 Darien 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 Darien 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 |