38 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Holly: Water Winter Solar Installers Co, CR Score 81/100; 4.4★ from 7 Google reviews; open 24/7.
Best for emergencies (open 24/7): Kearns Brothers, posts 24/7 hours; ranked #2 of 38.
Most-reviewed: Oak Electric Service, Inc., 2,214 Google reviews at 4.8★, the most of 38 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
38 Holly solar installers are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 16 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.8★ across 38 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Water Winter Solar Installers Co | 81 | 4.4★ (7) | Auburn Hills, 21 mi away | 24/7 | Overall |
| 2 | Kearns Brothers | 81 | 4.7★ (843) | Livonia, 32 mi away | 24/7 | Emergencies |
| 3 | Four Seasons Kanga Roof | 81 | 4.8★ (953) | Roseville, 39 mi away | 24/7 | — |
| 4 | Solar King | 79 | 4.7★ (43) | Milford, 16 mi away | Sat | — |
| 5 | Ecotelligent Homes | 78 | 5.0★ (149) | Farmington Hills, 24 mi away | Sat · Sun · Evenings | — |
| 6 | Rapid Solar | 76 | 5.0★ (12) | Amherstburg, 26 mi away | — | — |
| 7 | Oak Electric Service, Inc. | 76 | 4.8★ (2,214) | Auburn Hills, 15 mi away | — | Most reviews |
| 8 | Asbury Roofing & Solar | 74 | 4.9★ (61) | Rochester, 27 mi away | Sat · Evenings | — |
| 9 | ESCON Power Solutions | 74 | 4.9★ (136) | Clinton Township, 36 mi away | — | — |
| 10 | Mona Power | 74 | 4.6★ (9) | Amherstburg, 25 mi away | Sat · Evenings | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.4★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Livonia, 32 mi away
Ranked #2 because of its Google rating and availability: 4.7★ from 843 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Roseville, 39 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 953 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milford, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 43 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Farmington Hills, 24 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 149 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amherstburg, 26 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Auburn Hills, 15 mi away
Ranked #7 because of its Google rating and review volume: 4.8★ from 2,214 Google reviews, the most Google reviews on this list (2,214).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rochester, 27 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clinton Township, 36 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 136 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amherstburg, 25 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 6 of 8 factors; credentials and recency not yet collected.
Based in Novi, 23 mi away
Ranked #11 because of its Google rating and trade focus: 4.0★ from 249 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn Hills, 31 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clinton Township, 35 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brighton, 19 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 132 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn Hills, 35 mi away
Ranked #15 because of its Google rating and availability: 4.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Detroit, 33 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Beverly Hills, 25 mi away
Ranked #17 because of its Google rating and review volume: 4.9★ from 571 Google reviews, 571 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Troy, 30 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amherstburg, 32 mi away
Ranked #19 because of its Google rating and trade focus: 4.5★ from 88 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Novi, 24 mi away
Ranked #20 because of its Google rating and trade focus: 4.5★ from 17 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milford, 14 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 9 Google reviews, open Saturdays until 2 PM.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amherstburg, 37 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Troy, 30 mi away
Ranked #23 because of its Google rating and trade focus: 4.4★ from 13 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ann Arbor, 39 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oak Park, 33 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Typical prices in USD, adjusted for Michigan 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 38 Holly solar installers on 8 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. Unknown factors are left out of the score, 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 Holly data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |