154 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Billerica: Team Sunshine Construction, LLC., CR Score 60/100; 4.7★ from 181 Google reviews; open 24/7.
Best for emergencies (open 24/7): NEC Electric & Solar, posts 24/7 hours; ranked #12 of 154.
Most-reviewed: Neeeco, 3,580 Google reviews at 4.9★, the most of 154 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
154 Billerica solar installers are ranked here by CR Score, from ten published factors. 19 are open 24/7, 97 open Saturdays and 41 open Sundays, based on posted hours. The median Google rating is 4.9★ across 154 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Team Sunshine Construction, LLC. | 60 | 4.7★ (181) | Boston, 16 mi away | 24/7 | Overall |
| 2 | Sunrun Solar | 60 | 4.4★ (276) | Billerica | Sat · Sun | — |
| 3 | Boundless, Inc. | 59 | 4.8★ (464) | Marlborough, 22 mi away | Sat · Sun | — |
| 4 | Boston Solar | 59 | 4.7★ (1,357) | Woburn, 7 mi away | — | — |
| 5 | Great Sky Solar | 59 | 5.0★ (468) | Lexington, 10 mi away | — | — |
| 6 | EnergySage | 58 | 4.8★ (1,027) | Boston, 17 mi away | — | — |
| 7 | Neeeco | 58 | 4.9★ (3,580) | Wilmington, 7 mi away | Sat · Evenings | Most reviews |
| 8 | Nexis Power LLC | 58 | 5.0★ (62) | Woburn, 8 mi away | Sat | — |
| 9 | Solaris Renewables | 57 | 4.7★ (213) | Danvers, 15 mi away | Sat | — |
| 10 | Ecoloop Solar Solutions | 57 | 4.9★ (125) | Danvers, 17 mi away | Sat · Evenings | — |
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: 4.7★ from 181 Google reviews, listed on Google as “Solar energy system service”.
Based in Billerica
Ranked #2 because of its Google rating and trade focus: 4.4★ from 276 Google reviews, listed on Google as “Solar energy company”.
Based in Marlborough, 22 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 464 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 7 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 1,357 Google reviews, listed on Google as “Solar energy company”.
Based in Lexington, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 468 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 17 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 1,027 Google reviews, listed on Google as “Solar energy company”.
Based in Wilmington, 7 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 3,580 Google reviews, the most in Billerica.
Based in Woburn, 8 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Solar energy company”.
Based in Danvers, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 213 Google reviews, listed on Google as “Solar energy company”.
Based in Danvers, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Solar energy company”.
Based in Andover, 10 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar energy company”.
Based in Needham, 20 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 115 Google reviews, listed on Google as “Electrical installation service”.
Based in Saugus, 14 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 9 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Solar energy company”.
Based in Billerica
Ranked #15 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 8 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 114 Google reviews, listed on Google as “Solar energy company”.
Based in Methuen, 12 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Solar energy company”.
Based in Tewksbury, 5 mi away
Ranked #18 because of its Google rating and review volume: 5.0★ from 100 Google reviews.
Based in Wilmington, 7 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Solar energy company”.
Based in Chelmsford, 3 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 82 Google reviews, listed on Google as “Solar energy company”.
Based in North Andover, 11 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 139 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 154 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 7 mi away
Ranked #23 because of its Google rating and trade focus: 4.4★ from 261 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 17 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy company”.
Based in Medford, 14 mi away
Ranked #25 because of its Google rating and review volume: 5.0★ from 123 Google reviews.
#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 154 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | PosiGen Home Solar | 55 | 4.4★ (23) | 5 mi |
| 27 | Sun Team | 55 | 4.9★ (18) | 20 mi |
| 28 | Solstice | 55 | 4.9★ (74) | 13 mi |
| 29 | Go Green Industries | 55 | 4.9★ (15) | 9 mi |
| 30 | Sunday Energy | 55 | 4.9★ (19) | 10 mi |
| 31 | Old Glory Solar | 54 | 5.0★ (30) | 39 mi |
| 32 | SunGrow Energy Corp | 54 | 5.0★ (4) | 18 mi |
| 33 | Eco Boston Solar Experts | 54 | 5.0★ (9) | 16 mi |
| 34 | Sunrun Solar | 54 | 4.4★ (27) | 21 mi |
| 35 | On Call Electric | 54 | 5.0★ (164) | 21 mi |
| 36 | Brightstar Solar | 54 | 4.9★ (100) | 21 mi |
| 37 | Ecoflux cleaning and professional services | 54 | 4.7★ (81) | 7 mi |
| 38 | RES Solar | 54 | 5.0★ (14) | 34 mi |
| 39 | Momentum Solar Massachusetts | 54 | 4.0★ (198) | 23 mi |
| 40 | DeFreitas Enterprises, LLC | 54 | 4.4★ (7) | 4 mi |
| 41 | Golden Group Roofing & Solar | 54 | 4.9★ (85) | 7 mi |
| 42 | Culture Energy | 54 | 5.0★ (14) | 13 mi |
| 43 | ACE Solar | 54 | 4.6★ (77) | 12 mi |
| 44 | Viridis Energy Solutions | 54 | 4.5★ (51) | 7 mi |
| 45 | Summit Energy | 54 | 4.7★ (824) | 36 mi |
| 46 | Golden Group Roofing & Solar | 54 | 4.9★ (174) | 27 mi |
| 47 | Liddell Solar | 54 | 5.0★ (27) | 22 mi |
| 48 | MassEnergySolutions | 54 | 4.6★ (26) | 18 mi |
| 49 | SAVKAT SOLAR | 54 | 5.0★ (24) | 23 mi |
| 50 | HiCleaners | 54 | 5.0★ (112) | 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 |
|---|---|---|
| Alel Solar | In Billerica | |
| BD Electrical & Solar | 5.0★ (2) | 28 mi |
| Bright Lite Energy | 3.0★ (2) | 16 mi |
| Devlin Contracting | 5.0★ (2) | 29 mi |
| Go Solar | 5.0★ (2) | 17 mi |
| iSP (Ion Solar Pros) | 5.0★ (2) | 29 mi |
| Isun Solar | 5.0★ (1) | In Billerica |
| Navisun LLC | 3.0★ (2) | 28 mi |
| NEC Solar | 5.0★ (2) | 15 mi |
| Patriot Solar Energy, Inc | In Billerica | |
| Precision Energy Corp. | 3.0★ (2) | In Billerica |
| Relay Power | 4.0★ (2) | 18 mi |
| Renewables Worldwide, Inc. | 5.0★ (2) | 10 mi |
| SolarTeck | In Billerica | |
| Sun Diagnostics Company | 5.0★ (2) | 9 mi |
| Sun Hour Energy | 5.0★ (2) | 13 mi |
| Sunshine Solutions | In Billerica | |
| Tesla Solar | 3.0★ (2) | 17 mi |
| Twin Metals Roofing | 4.9★ (28) | In Billerica |
| Zhumas Construction | 4.6★ (166) | In Billerica |
Typical prices in USD, adjusted for Massachusetts 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 154 Billerica 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 Billerica 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 |