135 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Windham: Team Sunshine Construction, LLC., CR Score 85/100; 4.7★ from 181 Google reviews; open 24/7.
Best for emergencies (open 24/7): SunGrow Energy Corp, posts 24/7 hours; ranked #3 of 135.
Most-reviewed: Neeeco, 3,580 Google reviews at 4.9★, the most of 135 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
135 Windham solar installers are ranked here by CR Score, from 8 published factors. 17 are open 24/7, 86 open Saturdays and 35 open Sundays, based on posted hours. The median Google rating is 5.0★ across 135 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Team Sunshine Construction, LLC. | 85 | 4.7★ (181) | Boston, 31 mi away | 24/7 | Overall |
| 2 | SAVKAT SOLAR | 83 | 5.0★ (24) | Derry, 7 mi away | — | — |
| 3 | SunGrow Energy Corp | 83 | 5.0★ (4) | Haverhill, 11 mi away | 24/7 | Emergencies |
| 4 | M&B Solar Consortium | 82 | 5.0★ (20) | Andover, 12 mi away | Sat · Sun · Evenings | — |
| 5 | Timothy Santos Electric | 82 | 5.0★ (100) | Tewksbury, 13 mi away | 24/7 | — |
| 6 | Sunrun Solar | 82 | 4.4★ (27) | Londonderry, 5 mi away | Sat · Sun | — |
| 7 | Boundless, Inc. | 82 | 4.8★ (464) | Marlborough, 35 mi away | Sat · Sun | — |
| 8 | Sunrun Solar | 82 | 4.4★ (276) | Billerica, 20 mi away | Sat · Sun | — |
| 9 | HAREI | 81 | 5.0★ (4) | Milford, 20 mi away | 24/7 | — |
| 10 | NEC Electric & Solar | 81 | 5.0★ (115) | Needham, 36 mi away | 24/7 | — |
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 availability: 4.7★ from 181 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Derry, 7 mi away
Ranked #2 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 Haverhill, 11 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Andover, 12 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Tewksbury, 13 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 100 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Londonderry, 5 mi away
Ranked #6 because of its Google rating and trade focus: 4.4★ from 27 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marlborough, 35 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 464 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Billerica, 20 mi away
Ranked #8 because of its Google rating and trade focus: 4.4★ from 276 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milford, 20 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Needham, 36 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 115 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Methuen, 8 mi away
Ranked #11 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 Pembroke, 24 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Wilmington, 17 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 3,580 Google reviews, the most Google reviews on this list (3,580).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lowell, 10 mi away
Ranked #14 because of its Google rating and availability: 4.7★ from 81 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saugus, 27 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Danvers, 25 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Medford, 29 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 123 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 16 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ 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 Ashburnham, 24 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Danvers, 23 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 213 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 3 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Boston, 33 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Woburn, 24 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Woburn, 23 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lexington, 27 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 468 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#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 135 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Brighter earth energy | 79 | 4.9★ (59) | 23 mi |
| 27 | Patriot Solar Energy, Inc | 78 | 4.5★ (8) | 12 mi |
| 28 | 180 South Solar | 78 | 5.0★ (5) | 12 mi |
| 29 | Boston Solar | 78 | 4.7★ (1,357) | 22 mi |
| 30 | On Call Electric | 78 | 5.0★ (164) | 34 mi |
| 31 | Owen Ladd Solar | 78 | 5.0★ (5) | 34 mi |
| 32 | All Weather Exteriors LLC | 78 | 4.8★ (153) | 15 mi |
| 33 | HiCleaners | 78 | 5.0★ (112) | 20 mi |
| 34 | Harvey Woods | 78 | 5.0★ (36) | 26 mi |
| 35 | Danville Solar Co | 78 | 5.0★ (12) | 13 mi |
| 36 | Sunday Energy | 78 | 4.9★ (19) | 12 mi |
| 37 | NE Solar Pros LLC | 78 | 5.0★ (13) | 15 mi |
| 38 | VAALT Energy | 77 | 5.0★ (5) | 6 mi |
| 39 | EnergySage | 77 | 4.8★ (1,027) | 33 mi |
| 40 | Golden Group Roofing & Solar | 77 | 4.9★ (174) | 40 mi |
| 41 | Seventh Gen Solar | 77 | 4.5★ (16) | 27 mi |
| 42 | Leominster Solar Solutions | 77 | 5.0★ (5) | 29 mi |
| 43 | Go Green Industries | 77 | 4.9★ (15) | 18 mi |
| 44 | PosiGen Home Solar | 77 | 4.4★ (23) | 13 mi |
| 45 | Bright Home Solutions, Inc. | 76 | 5.0★ (62) | 16 mi |
| 46 | Net Meter NH Solar | 76 | 5.0★ (13) | 22 mi |
| 47 | East Coast Energy Solutions | 76 | 4.6★ (9) | 12 mi |
| 48 | ReVision Energy | 76 | 4.8★ (139) | 17 mi |
| 49 | Eco Boston Solar Experts | 76 | 5.0★ (9) | 31 mi |
| 50 | Sungrow Energy | 76 | 5.0★ (9) | 11 mi |
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 |
|---|---|---|
| Anar Solar | 5.0★ (1) | 6 mi |
| BD Electrical & Solar | 5.0★ (2) | 33 mi |
| Bright Lite Energy | 3.0★ (2) | 33 mi |
| CAPITOL POWER LLC | 1.0★ (1) | 32 mi |
| Focus Electrical Solar Dracut MA | 5.0★ (1) | 10 mi |
| Go Solar | 5.0★ (2) | 31 mi |
| Modern Solar USA | 5.0★ (1) | 22 mi |
| NEC Solar | 5.0★ (2) | 32 mi |
| New Leaf Energy | 1.0★ (1) | 12 mi |
| PowerDash Inc. | 5.0★ (1) | 31 mi |
| Powur Solar Massachusetts | 5.0★ (1) | 22 mi |
| Relay Power | 4.0★ (2) | 31 mi |
| Renewables Worldwide, Inc. | 5.0★ (2) | 12 mi |
| Rivermoor Energy | 5.0★ (1) | 34 mi |
| Solar Wave Energy Inc | 5.0★ (1) | 30 mi |
| SolarNara | 5.0★ (1) | 13 mi |
| Summit Energy | 1.0★ (1) | 16 mi |
| Sun Diagnostics Company | 5.0★ (2) | 18 mi |
| Sun Hour Energy | 5.0★ (2) | 17 mi |
| Tesla Solar | 3.0★ (2) | 33 mi |
Typical prices in USD, adjusted for New Hampshire 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 135 Windham 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 Windham 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 |