6 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Kapa‘a: Solar Kauai, CR Score 65/100; 5.0★ from 30 Google reviews; open 24/7.
Most-reviewed: Rising Sun Solar Kaua'i, 53 Google reviews at 4.9★, the most of 6 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Kapa‘a solar installers are ranked here by CR Score, from ten published factors. 1 is open 24/7, 3 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.9★ across 6 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Solar Kauai | 65 | 5.0★ (30) | Lihue, 8 mi away | 24/7 | Overall |
| 2 | Sunrun Solar | 63 | 4.8★ (22) | Lihue, 7 mi away | Sat · Sun | — |
| 3 | Rising Sun Solar Kaua'i | 58 | 4.9★ (53) | Lihue, 9 mi away | — | Most reviews |
| 4 | Nathan Wood General Contractor, LLC | 58 | 4.9★ (18) | Lihue, 9 mi away | — | — |
| 5 | Blue Sky Electric | 54 | 4.9★ (14) | Wailua Homesteads, 4 mi away | Sat | — |
| 6 | STI Solar & Roofing | 52 | 5.0★ (6) | Lihue, 8 mi away | — | — |
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.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy system service”.
Based in Lihue, 7 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Solar energy company”.
Based in Lihue, 9 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 53 Google reviews, the most in Kapa‘a.
Based in Lihue, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Solar energy system service”.
Based in Wailua Homesteads, 4 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 14 Google reviews.
Based in Lihue, 8 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
Typical prices in USD, adjusted for Hawaii with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $29,770 | $33,680 | $36,640 | 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) | October 2026 |
We scored 6 Kapa‘a 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 Kapa‘a 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 |