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Best Solar Installers in Ontario, OR (2026)

8 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Ontario: Beacon Plumbing, Heating, Air-Conditioning, and Electrical, Inc, CR Score 84/100; 5.0★ from 320 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Defused Electrical Innovations LLC, posts 24/7 hours; ranked #2 of 8.

  3. 4

    Most-reviewed: Treasure Valley Exteriors, 640 Google reviews at 4.8★, the most of 8 ranked; ranked #4.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

8 Ontario solar installers are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 6 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.9★ across 8 rated businesses.

Top 8 solar installers in Ontario at a glance

Top 8 solar installers in Ontario at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Beacon Plumbing, Heating, Air-Conditioning, and Electrical, Inc845.0★ (320)Caldwell, 32 mi away24/7Overall
2Defused Electrical Innovations LLC784.9★ (110)Meridian, 30 mi away24/7Emergencies
3Real estate & solar754.9★ (13)Meridian, 40 mi awaySat · Evenings—
4Treasure Valley Exteriors724.8★ (640)Meridian, 39 mi away—Most reviews
5See in Clear725.0★ (25)Meridian, 30 mi awaySat · Evenings—
6Power House Exteriors715.0★ (34)Meridian, 39 mi awaySat · Evenings—
7Renewable Energy NW LLC684.0★ (8)Star, 33 mi awaySat—
8Columbia Roofing, LLC674.9★ (48)Boise, 40 mi away——

The 8 best solar installers in Ontario, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Based in Meridian, 40 mi away

    75/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 13 Google reviews, listed on Google as “Solar energy company”.

    • 4.9★ from 13 Google reviews
    Hours
    Mon–Sat 9 AM–9 PM · Sun closed
    Address
    638 E Chateau Dr, Meridian, ID 83646
  2. Based in Meridian, 30 mi away

    72/100CR Score

    Ranked #5 because of its Google rating and review volume: 5.0★ from 25 Google reviews, 25 Google reviews.

    • 5.0★ from 25 Google reviews
    Hours
    Mon–Fri 8:30 AM–7 PM · Sat 10 AM–5 PM · Sun closed

How much do solar installers cost in Ontario?

Typical prices in USD, adjusted for Oregon with a published regional index. Each row names its basis and month.

How much do solar installers cost in Ontario?
JobLowTypicalHighBasisChecked
Solar panel installation$29,770$33,680$36,640Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.08 Pacific factor (2025 Cost vs. Value Report)October 2026

How we ranked Ontario solar installers

We scored 8 Ontario 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Ontario data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Solar installers in Ontario: frequently asked questions

Who is the best solar installer in Ontario?

By CR Score, the highest-ranked solar installer in Ontario, OR is Beacon Plumbing, Heating, Air-Conditioning, and Electrical, Inc with a CR Score of 84/100. It has 5.0★ from 320 Google reviews. It is open 24/7. Defused Electrical Innovations LLC (#2) and Real estate & solar (#3) follow. We ranked 8 solar installers on 8 factors, last updated October 22, 2026.

Which solar installers in Ontario are open 24/7?

2 ranked solar installers in Ontario post 24/7 hours. The highest-ranked are Beacon Plumbing, Heating, Air-Conditioning, and Electrical, Inc (#1) and Defused Electrical Innovations LLC (#2). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which solar installers in Ontario work on weekends?

6 of 8 ranked solar installers post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays are Beacon Plumbing, Heating, Air-Conditioning, and Electrical, Inc (#1), Defused Electrical Innovations LLC (#2) and Real estate & solar (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does solar panel installation cost in Ontario?

Solar panel installation typically costs $29,770 to $36,640, with $33,680 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.08 Pacific factor (2025 Cost vs. Value Report)). The range is adjusted for Oregon. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Ontario solar installers have?

The median Google rating among 8 rated solar installers in Ontario is 4.9★, with a median of 41 reviews. Treasure Valley Exteriors has the most, 640 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank solar installers?

Each solar installer gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do solar installers outside Ontario count in this ranking?

Yes, if they are within 40 mi of the Ontario city center, our service radius for solar installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Can solar installers pay to rank higher on ContractorsRanked?

No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.

Update log for Ontario

  1. October 2026: CR Scores recalculated for 8 solar installers serving Ontario.