64/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 177 Google reviews, the most in Helena.
- 4.7★ from 177 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 11 AM–4 PM · Sun closed
Best Solar Installers in Helena, MT (2026)
5 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Helena: Big Dog Solar, CR Score 64/100; 4.7★ from 177 Google reviews; open Saturdays until 4 PM.
- 2
Best for emergencies (open 24/7): YellowBall Roofing & Solar - Helena, posts 24/7 hours; ranked #2 of 5.
- 4
Most-reviewed: Solar Montana, 53 Google reviews at 4.8★, the most of 5 ranked after Big Dog Solar; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
5 Helena solar installers are ranked here by CR Score, from ten published factors. 1 is open 24/7, 3 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.8★ across 5 rated businesses.
Top 5 solar installers in Helena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Big Dog Solar | 64 | 4.7★ (177) | Helena Valley West Central, 1 mi away | Sat · Evenings | Overall |
| 2 | YellowBall Roofing & Solar - Helena | 58 | 4.8★ (18) | Helena | 24/7 | Emergencies |
| 3 | Carbon Recall Solar | 58 | 5.0★ (22) | Helena | — | — |
| 4 | Solar Montana | 56 | 4.8★ (53) | Helena | — | Most reviews |
| 5 | Glass Act Window Washing | 53 | 5.0★ (18) | Helena | Sat | — |
The 5 best solar installers in Helena, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Helena
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Roofing contractor”.
- 4.8★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 753 Nicole St, Helena, MT 59601
Based in Helena
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Solar energy company”.
- 5.0★ from 22 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 1325 Hiawatha St Unit B, Helena, MT 59601
Based in Helena
56/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 53 Google reviews.
- 4.8★ from 53 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 2025 N Last Chance Gulch, Helena, MT 59601
Based in Helena
53/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 18 Google reviews.
- 5.0★ from 18 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 1007 Cheyenne Rd, Helena, MT 59602
How much do solar installers cost in Helena?
Typical prices in USD, adjusted for Montana with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $25,190 | $28,490 | $30,990 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.92 Mountain factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked Helena solar installers
We scored 5 Helena 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 Helena 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 |
Solar installers in Helena: frequently asked questions
Who is the best solar installer in Helena?
By CR Score, the highest-ranked solar installer in Helena, MT is Big Dog Solar with a CR Score of 64/100. It has 4.7★ from 177 Google reviews. It is open Saturdays until 4 PM. YellowBall Roofing & Solar - Helena (#2) and Carbon Recall Solar (#3) follow. We ranked 5 solar installers on ten factors, last updated October 22, 2026.
How many solar installers are there in Helena?
ContractorsRanked ranks 5 solar installers serving Helena, MT. 4 of them are based in Helena; the rest serve it from nearby towns. Counts are as of October 2026.
Which solar installers in Helena are open 24/7?
1 ranked solar installer in Helena posts 24/7 hours. The highest-ranked is YellowBall Roofing & Solar - Helena (#2). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which solar installers in Helena work on weekends?
3 of 5 ranked solar installers post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays are Big Dog Solar (#1), YellowBall Roofing & Solar - Helena (#2) and Glass Act Window Washing (#5). Posted hours are office hours; crews may book weekend jobs separately.
How much does solar panel installation cost in Helena?
Solar panel installation typically costs $25,190 to $30,990, with $28,490 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.92 Mountain factor (2025 Cost vs. Value Report)). The range is adjusted for Montana. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Helena solar installers have?
The median Google rating among 5 rated solar installers in Helena is 4.8★, with a median of 22 reviews. Big Dog Solar has the most, 177 reviews, and ranks #1. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do solar installers outside Helena count in this ranking?
Yes, if they are within 40 mi of the Helena 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.
Update log for Helena
- October 2026: CR Scores recalculated for 5 solar installers serving Helena.
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