7 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sarnia: ESCON Power Solutions, CR Score 57/100; 4.9★ from 136 Google reviews.
Best for emergencies (open 24/7): Four Seasons Kanga Roof, posts 24/7 hours; ranked #4 of 7.
Most-reviewed: Green Apple Electrical Solutions Ltd., 16 Google reviews at 4.3★, the most of 7 ranked after ESCON Power Solutions; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
7 Sarnia solar installers are ranked here by CR Score, from ten published factors. 2 are open 24/7, 3 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.3★ across 7 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | ESCON Power Solutions | 57 | 4.9★ (136) | Clinton Township, 62 km away | — | Overall |
| 2 | Solar ReAction LLC | 52 | 4.2★ (15) | Clinton Township, 61 km away | — | — |
| 3 | Orange Cell Solar | 52 | 5.0★ (9) | Auburn Hills, 61 km away | Sat | — |
| 4 | Four Seasons Kanga Roof | 49 | 5.0★ (10) | Clinton Township, 54 km away | 24/7 | Emergencies |
| 5 | Express Roofing and Solar of Washington | 49 | 4.0★ (4) | Auburn Hills, 57 km away | 24/7 | — |
| 6 | Green Apple Electrical Solutions Ltd. | 44 | 4.3★ (16) | Chatham, 63 km away | — | Most reviews |
| 7 | Electrex Industrial Solutions - Commercial Electricians, Industrial Electrical Contractors | 43 | 3.5★ (8) | Clinton Township, 56 km 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 review volume: 4.9★ from 136 Google reviews, the most in Sarnia.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton Township, 61 km away
Ranked #2 because of its Google rating and trade focus: 4.2★ from 15 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 Hills, 61 km away
Ranked #3 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 Clinton Township, 54 km away
Ranked #4 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn Hills, 57 km away
Ranked #5 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chatham, 63 km away
Ranked #6 because of its Google rating and review volume: 4.3★ from 16 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton Township, 56 km away
Ranked #7 because of its Google rating and trade focus: 3.5★ from 8 Google reviews, listed on Google as “Electrician”.
Based on 8 of 10 factors; credentials and recency not yet collected.
US national ranges converted to CAD, not adjusted for Sarnia. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | CA$38,690 | CA$43,760 | CA$47,600 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
We scored 7 Sarnia 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 Sarnia 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 |