28 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Greenfield: PV Squared Solar, CR Score 59/100; 4.9★ from 70 Google reviews.
Best for emergencies (open 24/7): Old Glory Solar, posts 24/7 hours; ranked #3 of 28.
Most-reviewed: Bergeron Mechanical Systems, 521 Google reviews at 5.0★, the most of 28 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
28 Greenfield solar installers are ranked here by CR Score, from ten published factors. 2 are open 24/7, 9 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 5.0★ across 28 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PV Squared Solar | 59 | 4.9★ (70) | Greenfield | — | Overall |
| 2 | All Energy Solar | 58 | 4.9★ (294) | Westfield, 34 mi away | Sat | — |
| 3 | Old Glory Solar | 58 | 5.0★ (30) | Athol, 29 mi away | 24/7 | Emergencies |
| 4 | Valley Solar | 58 | 4.9★ (201) | Easthampton, 22 mi away | — | — |
| 5 | Trinity Solar | 57 | 4.4★ (339) | Holyoke, 26 mi away | Sat · Evenings | — |
| 6 | Northeast Solar | 57 | 5.0★ (94) | Amherst, 16 mi away | — | — |
| 7 | Insight Energy Systems - Insight Solar | 57 | 4.8★ (115) | Amherst, 14 mi away | — | — |
| 8 | Brad the Solar Guy | 56 | 5.0★ (20) | Northampton, 14 mi away | Sat · Evenings | — |
| 9 | PosiGen Home Solar | 55 | 4.5★ (96) | Ludlow, 28 mi away | Sun | — |
| 10 | Greenfield Solar | 54 | 5.0★ (9) | Greenfield | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Westfield, 34 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 294 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Athol, 29 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Easthampton, 22 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 201 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holyoke, 26 mi away
Ranked #5 because of its Google rating and trade focus: 4.4★ from 339 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Amherst, 16 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 94 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Amherst, 14 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 115 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Northampton, 14 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ludlow, 28 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 96 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greenfield
Ranked #10 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greenfield
Ranked #11 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chicopee, 28 mi away
Ranked #12 because of its Google rating and trade focus: 3.6★ from 130 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ashland, 38 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Beverly, 38 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Keene, 29 mi away
Ranked #15 because of its Google rating and review volume: 5.0★ from 521 Google reviews, the most in Greenfield.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Northampton, 19 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Westfield, 32 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Canton, 22 mi away
Ranked #18 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Economy, 36 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ludlow, 32 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Westfield, 32 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pittsfield, 34 mi away
Ranked #22 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brattleboro, 20 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Leicester, 38 mi away
Ranked #24 because of its Google rating and trade focus: 1.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Pittsfield, 35 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #28, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Millstream Construction | 43 | 4.4★ (17) | 32 mi |
| 27 | Green Earth Roofing Solutions LLC | 43 | 5.0★ (7) | 31 mi |
| 28 | M.L. Schmitt Electric, Inc. | 41 | 3.3★ (3) | 31 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 |
|---|---|---|
| Alex Valley Electrician | 5.0★ (2) | 28 mi |
| Alpine Solar Heat and Hot Water, LLC | 5.0★ (2) | 25 mi |
| Brattleboro Solar Management | 5.0★ (1) | 19 mi |
| Domestic DC Systems | 19 mi | |
| Edison Energy Consultants LLC | 5.0★ (2) | 14 mi |
| Energy Saver Enablers, LLC | 5.0★ (1) | 34 mi |
| ESA | 31 mi | |
| Find Solar Discounts | 32 mi | |
| Greenworks Alternatives | 22 mi | |
| Luminous Energy | 5.0★ (2) | 29 mi |
| Mars Solor | 26 mi | |
| Onlysolar Diagnostic | 5.0★ (1) | 27 mi |
| Pioneer Solar | 19 mi | |
| Solar Adviser By Carmin | 30 mi | |
| Solar Connect Local | 17 mi | |
| SolarGuru Energy | 18 mi | |
| SolarGuru Energy - Western MA Solar Company | 19 mi | |
| Spartan Solar | 5.0★ (2) | In Greenfield |
| Spartan Solar | 5.0★ (1) | In Greenfield |
| Valley Solar Works | 10 mi |
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 28 Greenfield 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 Greenfield 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 |