248 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Discovery Bay: Smart Solar Panel Cleaning Bay Area, CR Score 60/100; 5.0★ from 418 Google reviews; open 24/7.
Best for emergencies (open 24/7): East Bay Solar Cleaning LLC, posts 24/7 hours; ranked #5 of 248.
Most-reviewed: Honey's Air & Solar, 5,700 Google reviews at 4.9★, the most of 248 ranked; ranked #27.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
248 Discovery Bay solar installers are ranked here by CR Score, from ten published factors. 28 are open 24/7, 140 open Saturdays and 77 open Sundays, based on posted hours. The median Google rating is 4.9★ across 248 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Smart Solar Panel Cleaning Bay Area | 60 | 5.0★ (418) | Hayward, 33 mi away | 24/7 | Overall |
| 2 | HomePro Solutions | 59 | 4.9★ (70) | Brentwood, 5 mi away | Sat · Sun · Evenings | — |
| 3 | Solar Shine | 59 | 4.9★ (268) | Antioch, 21 mi away | Sat · Sun | — |
| 4 | Hurst Solar Panel Cleaning | 59 | 5.0★ (118) | Oakley, 6 mi away | Sat | — |
| 5 | East Bay Solar Cleaning LLC | 58 | 5.0★ (104) | Lafayette, 28 mi away | 24/7 | Emergencies |
| 6 | EnergyAid | 58 | 4.8★ (842) | Fremont, 33 mi away | 24/7 | — |
| 7 | Sunrun Solar | 57 | 4.5★ (276) | Stockton, 19 mi away | Sat · Sun | — |
| 8 | American Array Solar and Roofing | 57 | 4.5★ (172) | Livermore, 18 mi away | Sat · Sun · Evenings | — |
| 9 | Semper Solaris | 56 | 4.6★ (480) | Hayward, 33 mi away | Sat · Sun · Evenings | — |
| 10 | Solar Bill Review | 56 | 5.0★ (128) | Dublin, 24 mi away | Sat | — |
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 418 Google reviews, listed on Google as “Solar energy company”.
Based in Brentwood, 5 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Solar energy company”.
Based in Antioch, 21 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 268 Google reviews, listed on Google as “Solar energy company”.
Based in Oakley, 6 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Solar energy company”.
Based in Lafayette, 28 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Solar panel maintenance service”.
Based in Fremont, 33 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 842 Google reviews, listed on Google as “Solar energy company”.
Based in Stockton, 19 mi away
Ranked #7 because of its Google rating and trade focus: 4.5★ from 276 Google reviews, listed on Google as “Solar energy company”.
Based in Livermore, 18 mi away
Ranked #8 because of its Google rating and trade focus: 4.5★ from 172 Google reviews, listed on Google as “Solar energy company”.
Based in Hayward, 33 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 480 Google reviews, listed on Google as “Solar energy company”.
Based in Dublin, 24 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Solar energy company”.
Based in Walnut Creek, 25 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Solar energy company”.
Based in Concord, 25 mi away
Ranked #12 because of its Google rating and trade focus: 4.6★ from 135 Google reviews, listed on Google as “Solar energy company”.
Based in Livermore, 17 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Solar energy company”.
Based in Antioch, 6 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Solar energy company”.
Based in Manteca, 26 mi away
Ranked #15 because of its Google rating and review volume: 4.9★ from 542 Google reviews.
Based in Modesto, 29 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Solar energy company”.
Based in Modesto, 24 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Solar energy company”.
Based in Antioch, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 19 Google reviews, listed on Google as “Solar energy company”.
Based in San Jose, 40 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Solar energy system service”.
Based in Vacaville, 39 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 1,388 Google reviews.
Based in Brentwood, 6 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Solar energy company”.
Based in Modesto, 32 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Solar energy company”.
Based in Redwood Shores, 38 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 55 Google reviews, listed on Google as “Solar energy company”.
Based in Danville, 19 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based in Manteca, 13 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Gutter cleaning service”.
#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 248 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | California Solar Care | 54 | 5.0★ (54) | 36 mi |
| 27 | Honey's Air & Solar | 54 | 4.9★ (5,700) | 35 mi |
| 28 | Element Solar Panel Cleaning | 54 | 5.0★ (3) | In Discovery Bay |
| 29 | Solar Energy Plus LLC | 54 | 5.0★ (3) | In Discovery Bay |
| 30 | Dowd Solar Netting and Cleaning | 54 | 4.9★ (68) | 38 mi |
| 31 | West Coast Solar | 54 | 4.3★ (184) | 6 mi |
| 32 | SolarSesame | 54 | 4.9★ (126) | 35 mi |
| 33 | Sunrun Solar | 54 | 4.4★ (281) | 37 mi |
| 34 | ProSol | 54 | 4.9★ (119) | 35 mi |
| 35 | Zuha Solar & Electric Inc | 54 | 5.0★ (18) | 15 mi |
| 36 | Besty Solar Inc. | 54 | 5.0★ (63) | 32 mi |
| 37 | North Valley Solar Power | 54 | 4.8★ (22) | 17 mi |
| 38 | Solar Shine Solutions | 54 | 5.0★ (4) | 14 mi |
| 39 | ACDC Power | 53 | 5.0★ (26) | 10 mi |
| 40 | Loves Air | 53 | 5.0★ (2,337) | 31 mi |
| 41 | Smart Home Security Control | 53 | 5.0★ (31) | 25 mi |
| 42 | North Valley Solar Power | 53 | 4.9★ (11) | 14 mi |
| 43 | Infusion Energy LLC | 53 | 5.0★ (9) | 24 mi |
| 44 | Sunrun Solar | 53 | 4.0★ (115) | 23 mi |
| 45 | CEZ Electric and Maintenance | 53 | 5.0★ (52) | 13 mi |
| 46 | Simply Clean Solar Panel & Gutters | 53 | 5.0★ (37) | 15 mi |
| 47 | Sky Power Solar | 53 | 4.4★ (14) | 22 mi |
| 48 | Caro Electric, LLC | 53 | 5.0★ (14) | 39 mi |
| 49 | North Valley Solar Power | 53 | 4.9★ (15) | 19 mi |
| 50 | Solar with Tony | 53 | 5.0★ (5) | 10 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 |
|---|---|---|
| 5 Star Solar Panel N Tiles Tracy | 5.0★ (2) | 16 mi |
| American Roofing & Solar Panels Discovery Bay | 5.0★ (1) | In Discovery Bay |
| Banta Electric & Solar | 5.0★ (2) | 17 mi |
| Contra Costa Sun | 5.0★ (2) | 21 mi |
| Disco Bay Energy | In Discovery Bay | |
| Eagle Shield | 3.0★ (2) | 25 mi |
| Estrada Exterior Cleaning Corp | 5.0★ (2) | 32 mi |
| GHESolar Company Fremont | 5.0★ (2) | 31 mi |
| GT Solar Power Concord | 5.0★ (2) | 25 mi |
| Home Solar Inc. | 5.0★ (2) | 22 mi |
| NC Electric & Solar Inc | 3.0★ (2) | 24 mi |
| Port City Solar Cleaning LLC | 5.0★ (2) | 20 mi |
| Pure Electric | 3.8★ (6) | In Discovery Bay |
| Solar Sense PV, Inc. | 1.0★ (2) | 23 mi |
| SolarPanal EranNSave Danville | 5.0★ (2) | 19 mi |
| SolarPower Divine Tracy | 5.0★ (2) | 15 mi |
| Spartan Home Services | 5.0★ (2) | 22 mi |
| TopOfTheLine SolarPanels Tracy | 5.0★ (2) | 16 mi |
| Triad Power Solutions | 5.0★ (2) | 24 mi |
| Vonnegut Electric & Solar | 5.0★ (2) | 27 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 248 Discovery Bay 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 Discovery Bay 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 |