129 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Grass Valley: Sierra Solar Cleaners, CR Score 62/100; 5.0★ from 98 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Cali Solar - Roseville Solar Panel Installation Contractor, posts 24/7 hours; ranked #8 of 129.
Most-reviewed: Spartan Home Services - Roofing & Solar, 288 Google reviews at 4.9★, the most of 129 ranked; ranked #43.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
129 Grass Valley solar installers are ranked here by CR Score, from ten published factors. 14 are open 24/7, 60 open Saturdays and 27 open Sundays, based on posted hours. The median Google rating is 5.0★ across 129 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sierra Solar Cleaners | 62 | 5.0★ (98) | Grass Valley | Sat · Sun · Evenings | Overall |
| 2 | California Solar Electric Cooperative | 59 | 4.9★ (104) | Grass Valley | — | — |
| 3 | Rocklin Solar Repair | 58 | 5.0★ (123) | Rocklin, 31 mi away | Sat · Sun · Evenings | — |
| 4 | North Valley Solar Power | 58 | 5.0★ (20) | Grass Valley | Sat · Evenings | — |
| 5 | Iron Cowboy Electric | 57 | 5.0★ (5) | Grass Valley | Sat · Sun | — |
| 6 | Sustainable Energy Group | 56 | 4.7★ (46) | Grass Valley | — | — |
| 7 | Opal Solar & Gutter Cleaning | 56 | 5.0★ (53) | Yuba City, 32 mi away | Sat · Sun · Evenings | — |
| 8 | Cali Solar - Roseville Solar Panel Installation Contractor | 56 | 5.0★ (24) | Roseville, 35 mi away | 24/7 | Emergencies |
| 9 | Westhaven Power | 56 | 4.6★ (248) | Yuba City, 30 mi away | Sat | — |
| 10 | Suns Solar Cleaning Rocklin | 55 | 5.0★ (74) | Rocklin, 31 mi away | Sat · Evenings | — |
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 trade focus: 5.0★ from 98 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Grass Valley
Ranked #2 because of its Google rating and trade focus: 4.9★ from 104 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rocklin, 31 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 123 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Grass Valley
Ranked #4 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Grass Valley
Ranked #5 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Grass Valley
Ranked #6 because of its Google rating and trade focus: 4.7★ from 46 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yuba City, 32 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Roseville, 35 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yuba City, 30 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 248 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rocklin, 31 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Yuba City, 18 mi away
Ranked #11 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 Rocklin, 30 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Linda, 16 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Roseville, 34 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 201 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 20 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 75 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rocklin, 31 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 184 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Diamond Springs, 38 mi away
Ranked #17 because of its Google rating and review volume: 4.6★ from 195 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 22 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Roseville, 32 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Solar energy company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Placerville, 38 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Roseville, 34 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Folsom, 38 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Solar energy system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lincoln, 27 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 28 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cameron Park, 40 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 173 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cameron Park, 40 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 129 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | North Valley Solar Power | 53 | 4.9★ (24) | 32 mi |
| 27 | Solar Conservators | 53 | 5.0★ (7) | 39 mi |
| 28 | Energy Saving Pros | 53 | 4.5★ (113) | 28 mi |
| 29 | Cope Electric | 53 | 5.0★ (4) | 35 mi |
| 30 | weber solar energy | 53 | 5.0★ (12) | 22 mi |
| 31 | North Valley Solar Power | 53 | 4.7★ (24) | 31 mi |
| 32 | Cascade Power | 53 | 4.9★ (26) | 34 mi |
| 33 | Ace Carpet Cleaning & Window Washing | 52 | 4.9★ (96) | 31 mi |
| 34 | Hooked on Solar | 52 | 4.4★ (177) | 30 mi |
| 35 | Spectrum Pressure Washing | 52 | 5.0★ (51) | 27 mi |
| 36 | California Green Energy Construction | 52 | 5.0★ (78) | In Grass Valley |
| 37 | Sunwave Energy, Inc. | 52 | 4.8★ (18) | 32 mi |
| 38 | DC Solar Electric Inc. | 52 | 4.3★ (11) | 10 mi |
| 39 | DIY Solar Planning | 52 | 5.0★ (39) | 31 mi |
| 40 | Val-Penn Energy Solutions | 52 | 5.0★ (20) | 36 mi |
| 41 | Eagle Energy | 52 | 5.0★ (30) | 31 mi |
| 42 | Solar Pro Cleaning | 52 | 4.9★ (25) | 39 mi |
| 43 | Spartan Home Services - Roofing & Solar | 52 | 4.9★ (288) | 33 mi |
| 44 | Prime Home Solutions | 52 | 4.8★ (69) | 36 mi |
| 45 | SolarHut, LLC | 52 | 4.9★ (72) | 39 mi |
| 46 | Solarado Roofing & Solar | 52 | 5.0★ (61) | 39 mi |
| 47 | Pristine Property Masters | 51 | 5.0★ (33) | 26 mi |
| 48 | More Sunshine LLC | 51 | 5.0★ (18) | 28 mi |
| 49 | Global Energy | 51 | 3.5★ (26) | 33 mi |
| 50 | The Sun Broker | 51 | 5.0★ (31) | 34 mi |
20 more solar installers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Americas Solar | 5.0★ (1) | 31 mi |
| Big Sky Electric | 5.0★ (20) | In Grass Valley |
| BoxPower | 5.0★ (1) | In Grass Valley |
| Express Roofing and Solar of Roseville | 5.0★ (1) | 34 mi |
| GHSSolar Panels Rocklin | 5.0★ (2) | 31 mi |
| Hunter Energy Solutions | 3.0★ (2) | 34 mi |
| KOB Construction | 5.0★ (1) | 39 mi |
| Lifetime Solar | 20 mi | |
| MEC Solar & Electric | 5.0★ (1) | 30 mi |
| Nicosia Construction | 5.0★ (2) | 40 mi |
| North State Solar Cleaning | 18 mi | |
| Pelton's Solar Services | In Grass Valley | |
| Precision Electric | 4.9★ (516) | In Grass Valley |
| Sola System Electrical Contracting | 5.0★ (29) | In Grass Valley |
| Solagistics LLC | 3.0★ (2) | 31 mi |
| Solar Aesthetics Tiles Folsom | 5.0★ (2) | 40 mi |
| Solara Home Energy | 3.0★ (2) | 31 mi |
| SolarSave Direct El Dorado Hills | 5.0★ (2) | 40 mi |
| Westhaven Solar HVAC | 5.0★ (1) | 30 mi |
| Zaniroli Solar Advantage | 5.0★ (1) | 24 mi |
Typical prices in USD, adjusted for California 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 129 Grass Valley 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 Grass Valley 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 |