21 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cottage Grove: All Energy Solar, CR Score 58/100; 4.7★ from 100 Google reviews; open Saturdays until 1 PM.
Best for emergencies (open 24/7): Saint Electric, posts 24/7 hours; ranked #16 of 21.
Most-reviewed: Everlight Solar, 1,361 Google reviews at 4.5★, the most of 21 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
21 Cottage Grove solar installers are ranked here by CR Score, from ten published factors. 1 is open 24/7, 6 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 5.0★ across 21 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | All Energy Solar | 58 | 4.7★ (100) | Madison, 5 mi away | Sat · Evenings | Overall |
| 2 | Full Spectrum Solar | 58 | 5.0★ (173) | Madison, 9 mi away | — | — |
| 3 | Midwest Solar Power | 58 | 5.0★ (132) | Madison, 6 mi away | — | — |
| 4 | Everlight Solar | 58 | 4.5★ (1,361) | Verona, 17 mi away | — | Most reviews |
| 5 | Drews Solar | 58 | 5.0★ (146) | Madison, 10 mi away | — | — |
| 6 | Madison Mobile Solar, LLC | 57 | 5.0★ (30) | Fitchburg, 10 mi away | — | — |
| 7 | SunPeak | 55 | 5.0★ (37) | Madison, 11 mi away | — | — |
| 8 | Arch Solar | 54 | 4.8★ (21) | Madison, 5 mi away | — | — |
| 9 | Synergy Renewable Systems, LLC | 52 | 5.0★ (13) | Stoughton, 10 mi away | — | — |
| 10 | Glow Solar | 52 | 4.6★ (9) | Madison, 5 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: 4.7★ from 100 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 9 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 173 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 6 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 132 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Verona, 17 mi away
Ranked #4 because of its Google rating and review volume: 4.5★ from 1,361 Google reviews, the most in Cottage Grove.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 146 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fitchburg, 10 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Madison, 11 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 5 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stoughton, 10 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 5 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ 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 Madison, 16 mi away
Ranked #11 because of its Google rating and trade focus: 1.0★ 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 Middleton, 18 mi away
Ranked #12 because of its Google rating and trade focus: 3.9★ from 28 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.0★ 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 Brookfield, 35 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Mills, 22 mi away
Ranked #15 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 Beloit, 31 mi away
Ranked #16 because of its Google rating and review volume: 4.4★ from 47 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 4 mi away
Ranked #17 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Electrician”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 8 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 15 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 28 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portage, 35 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Electrician”.
Based on 8 of 10 factors; credentials and recency not yet collected.
8 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 |
|---|---|---|
| 4K Techs LLC | 5.0★ (2) | 32 mi |
| All-Star Maintenance Services LLC | 16 mi | |
| Black Wolf Service LLC | 16 mi | |
| Effortless Solar | 31 mi | |
| Hamilton Solar EnergyServices | 9 mi | |
| SolarShare Wisconsin Cooperative | 9 mi | |
| WES Engineering Inc | 5.0★ (1) | 11 mi |
| Wisconsin Solar Design Inc. | 17 mi |
Typical prices in USD, adjusted for Wisconsin with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $26,020 | $29,430 | $32,010 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.95 East North Central factor (2025 Cost vs. Value Report) | October 2026 |
We scored 21 Cottage Grove 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 23, 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 Cottage Grove 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 |