31 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Northfield: Critical Mass Solar, CR Score 58/100; 4.9★ from 59 Google reviews; open evenings.
Best for emergencies (open 24/7): Owen Ladd Solar, posts 24/7 hours; ranked #9 of 31.
Most-reviewed: Sentry Roofing, 181 Google reviews at 4.7★, the most of 31 ranked; ranked #23.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
31 Northfield solar installers are ranked here by CR Score, from ten published factors. 3 are open 24/7, 20 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 5.0★ across 31 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Critical Mass Solar | 58 | 4.9★ (59) | Fitchburg, 14 mi away | Evenings | Overall |
| 2 | SRsolarNH | 58 | 5.0★ (26) | Auburn, 13 mi away | Sat · Evenings | — |
| 3 | The Power Grid | 58 | 5.0★ (26) | Methuen, 14 mi away | Sat · Evenings | — |
| 4 | Sundial Solar and Sundial Geothermal | 58 | 4.8★ (77) | Concord, 16 mi away | — | — |
| 5 | Brighter earth energy | 58 | 4.9★ (59) | Brookline, 28 mi away | Sat · Evenings | — |
| 6 | Porter Electrical Contracting | 57 | 5.0★ (35) | Pembroke, 27 mi away | — | — |
| 7 | Sunup Solar | 57 | 5.0★ (46) | Auburn, 31 mi away | Sat | — |
| 8 | Energy Shield of New Hampshire, LLC | 56 | 4.8★ (137) | Franklin, 7 mi away | Sat | — |
| 9 | Owen Ladd Solar | 56 | 5.0★ (5) | Winooski, 23 mi away | 24/7 | Emergencies |
| 10 | Seventh Gen Solar | 56 | 4.5★ (16) | Concord, 19 mi away | — | — |
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 59 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 13 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Methuen, 14 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 77 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brookline, 28 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 59 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pembroke, 27 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Solar energy company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Auburn, 31 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Franklin, 7 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 137 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Winooski, 23 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 19 mi away
Ranked #10 because of its Google rating and trade focus: 4.5★ from 16 Google reviews, listed on Google as “Solar energy company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Valley Falls, 23 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 32 mi away
Ranked #12 because of its Google rating and review volume: 4.8★ from 153 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hopkinton, 17 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Derry, 40 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Solar energy company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Katy, 23 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hanover, 31 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milford, 38 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bedford, 35 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ 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 Concord, 22 mi away
Ranked #19 because of its Google rating and review volume: 4.9★ from 59 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Moultonborough, 16 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lebanon, 32 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 39 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 32 mi away
Ranked #23 because of its Google rating and review volume: 4.7★ from 181 Google reviews, the most in Northfield.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Andover, 17 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rochester, 33 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #31, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Energy Audits Unlimited LLC | 50 | 4.0★ (3) | 31 mi |
| 27 | New England Clean Energy - New Hampshire Office | 50 | 5.0★ (7) | 35 mi |
| 28 | New England Energy Experts | 49 | 5.0★ (30) | 33 mi |
| 29 | Mains Electric, LLC | 48 | 4.9★ (20) | 19 mi |
| 30 | Norwich Solar | 48 | 4.2★ (5) | 39 mi |
| 31 | Simple Energy | 45 | 4.0★ (53) | 39 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) | 40 mi |
| Applied Solar Technologies | 18 mi | |
| Beacon Energy Solutions LLC | 33 mi | |
| Breakaway Renewables | 39 mi | |
| Lakes Region Solar and Smart Home | 14 mi | |
| Lawnboy Landscaping LLC | 22 mi | |
| Milhouse Enterprises | 5.0★ (1) | 5 mi |
| Monarch Power | 16 mi | |
| New World NRG | 14 mi | |
| NH Off-Grid | 6 mi | |
| Oasis Energy | 28 mi | |
| Seventh Gen Solar | 10 mi | |
| Snow Dragon Solar LLC | 9 mi | |
| Solar Components Corporation | 32 mi | |
| Sundance Solar Products | 21 mi | |
| SunRun Solar | 21 mi | |
| SunRun Solar | 29 mi | |
| Sunshine Solutions | 14 mi | |
| Sunweaver | 24 mi | |
| Unlimited Power Of The Sun | 14 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 31 Northfield 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 Northfield 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 |