179 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Waltham: Team Sunshine Construction, LLC., CR Score 61/100; 4.7★ from 181 Google reviews; open 24/7.
Best for emergencies (open 24/7): NEC Electric & Solar, posts 24/7 hours; ranked #7 of 179.
Most-reviewed: Neeeco, 3,580 Google reviews at 4.9★, the most of 179 ranked; ranked #14.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
179 Waltham solar installers are ranked here by CR Score, from ten published factors. 19 are open 24/7, 107 open Saturdays and 46 open Sundays, based on posted hours. The median Google rating is 4.9★ across 179 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Team Sunshine Construction, LLC. | 61 | 4.7★ (181) | Boston, 8 mi away | 24/7 | Overall |
| 2 | Boundless, Inc. | 60 | 4.8★ (464) | Marlborough, 18 mi away | Sat · Sun | — |
| 3 | Great Sky Solar | 60 | 5.0★ (468) | Lexington, 4 mi away | — | — |
| 4 | EnergySage | 59 | 4.8★ (1,027) | Boston, 9 mi away | — | — |
| 5 | Boston Solar | 59 | 4.7★ (1,357) | Woburn, 10 mi away | — | — |
| 6 | Sunrun Solar | 58 | 4.4★ (276) | Billerica, 10 mi away | Sat · Sun | — |
| 7 | NEC Electric & Solar | 58 | 5.0★ (115) | Needham, 7 mi away | 24/7 | Emergencies |
| 8 | Nexis Power LLC | 57 | 5.0★ (62) | Woburn, 10 mi away | Sat | — |
| 9 | Sunrun Solar | 57 | 4.5★ (476) | Taunton, 29 mi away | Sat · Sun | — |
| 10 | SunPower Corporation | 57 | 4.5★ (154) | Boston, 9 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 Marlborough, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 464 Google reviews, listed on Google as “Solar energy company”.
Based in Lexington, 4 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 468 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 1,027 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 10 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 1,357 Google reviews, listed on Google as “Solar energy company”.
Based in Billerica, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.4★ from 276 Google reviews, listed on Google as “Solar energy company”.
Based in Needham, 7 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 115 Google reviews, listed on Google as “Electrical installation service”.
Based in Woburn, 10 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 Taunton, 29 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 476 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 9 mi away
Ranked #10 because of its Google rating and trade focus: 4.5★ from 154 Google reviews, listed on Google as “Solar energy company”.
Based in Danvers, 20 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Solar energy company”.
Based in Danvers, 19 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 213 Google reviews, listed on Google as “Solar energy company”.
Based in Saugus, 13 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 Wilmington, 16 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 3,580 Google reviews, the most in Waltham.
Based in Boston, 9 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 10 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Solar energy company”.
Based in Cambridge, 5 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 74 Google reviews, listed on Google as “Solar energy company”.
Based in Woburn, 10 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 114 Google reviews, listed on Google as “Solar energy company”.
Based in Medford, 8 mi away
Ranked #19 because of its Google rating and review volume: 5.0★ from 123 Google reviews.
Based in Waltham
Ranked #20 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Solar energy company”.
Based in Mansfield, 24 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 824 Google reviews, listed on Google as “Solar energy company”.
Based in Boston, 8 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Solar energy company”.
Based in Cohasset, 25 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 in Brookline, 14 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Solar energy company”.
Based in Valley Falls, 16 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Solar energy company”.
#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 179 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | MassEnergySolutions | 55 | 4.6★ (26) | 8 mi |
| 27 | Accept Solar | 55 | 3.7★ (9) | 5 mi |
| 28 | M&B Solar Consortium | 55 | 5.0★ (20) | 21 mi |
| 29 | On Call Electric | 55 | 5.0★ (164) | 17 mi |
| 30 | Reuse Solar | 55 | 5.0★ (8) | In Waltham |
| 31 | Freedom Forever | 55 | 4.4★ (261) | 10 mi |
| 32 | Brightstar Solar | 55 | 4.9★ (100) | 16 mi |
| 33 | Oberon Initiatives Inc. | 55 | 4.9★ (149) | 20 mi |
| 34 | Momentum Solar Massachusetts | 55 | 4.0★ (198) | 18 mi |
| 35 | Golden Group Roofing & Solar | 55 | 4.9★ (174) | 22 mi |
| 36 | Mark The Solar Expert | 54 | 4.9★ (35) | 29 mi |
| 37 | Proto Home Service Plumbing Heating & Cooling 24/7 | 54 | 5.0★ (139) | 18 mi |
| 38 | Helios Solar Energy | 54 | 5.0★ (43) | 24 mi |
| 39 | Sunrun Solar | 54 | 4.1★ (239) | 25 mi |
| 40 | Bright Home Solutions, Inc. | 54 | 5.0★ (62) | 16 mi |
| 41 | Golden Group Roofing & Solar | 54 | 4.9★ (85) | 5 mi |
| 42 | Brightway Energy | 54 | 4.9★ (36) | 8 mi |
| 43 | ReVision Energy | 54 | 4.8★ (139) | 20 mi |
| 44 | OneGrid Energy Integration | 54 | 5.0★ (57) | 39 mi |
| 45 | Timothy Santos Electric | 54 | 5.0★ (100) | 17 mi |
| 46 | Sun Team | 54 | 4.9★ (18) | 26 mi |
| 47 | Solar On Earth | 54 | 4.7★ (82) | 16 mi |
| 48 | Shamrock Well and Pump LLC | 54 | 4.9★ (354) | 30 mi |
| 49 | Patriot Solar Energy, Inc | 54 | 4.5★ (8) | 18 mi |
| 50 | ComfortMax Energy Solutions | 53 | 5.0★ (109) | 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 |
|---|---|---|
| 777 Smart Solar & Cleaning | 5.0★ (2) | 33 mi |
| Aten Concepts | In Waltham | |
| BD Electrical & Solar | 5.0★ (2) | 30 mi |
| Bright Lite Energy | 3.0★ (2) | 5 mi |
| Devlin Contracting | 5.0★ (2) | 19 mi |
| Direct Energy Plan | 5.0★ (2) | 33 mi |
| Eagle Rivet Roof Services Corporation | In Waltham | |
| Go Solar | 5.0★ (2) | 12 mi |
| iSP (Ion Solar Pros) | 5.0★ (2) | 20 mi |
| LastMile Energy, LLC | 5.0★ (2) | 18 mi |
| Navisun LLC | 3.0★ (2) | 18 mi |
| NEC Solar | 5.0★ (2) | 3 mi |
| Relay Power | 4.0★ (2) | 16 mi |
| Renewables Worldwide, Inc. | 5.0★ (2) | 21 mi |
| Solar By Jake | 4.5★ (2) | 29 mi |
| Solar Powered by Mario's | 5.0★ (2) | 20 mi |
| Sun Diagnostics Company | 5.0★ (2) | 16 mi |
| Sun Hour Energy | 5.0★ (2) | 21 mi |
| Tesla Solar | 3.0★ (2) | 8 mi |
| US SolarWorks | 5.0★ (2) | 30 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 179 Waltham 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 Waltham 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 |