57 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Waterloo: Bates Electric, CR Score 87/100; 4.8★ from 1,366 Google reviews; open 24/7.
Best for emergencies (open 24/7): Streib Company, posts 24/7 hours; ranked #2 of 57.
Most-reviewed: Brda Electric, 817 Google reviews at 4.9★, the most of 57 ranked after Bates Electric; ranked #20.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
57 Waterloo solar installers are ranked here by CR Score, from 8 published factors. 7 are open 24/7, 24 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.9★ across 57 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Bates Electric | 87 | 4.8★ (1,366) | Arnold, 14 mi away | 24/7 | Overall |
| 2 | Streib Company | 85 | 4.9★ (679) | St. Louis, 20 mi away | 24/7 | Emergencies |
| 3 | Ltd Solar Consulting and Roofing | 84 | 5.0★ (10) | St. Louis, 18 mi away | 24/7 | — |
| 4 | AMA ENERGY SOLUTIONS LLC | 82 | 4.0★ (8) | Sappington, 18 mi away | 24/7 | — |
| 5 | All Around Tree Care Services LLC | 80 | 4.8★ (66) | Mascoutah, 22 mi away | 24/7 | — |
| 6 | Solar R&R Kings | 78 | 5.0★ (4) | East Saint Louis, 23 mi away | Sat · Sun | — |
| 7 | Astrawatt Solar | 78 | 4.7★ (47) | Olivette, 27 mi away | Sat · Evenings | — |
| 8 | Ram Roofing and Solar | 77 | 5.0★ (12) | Saint Peters, 38 mi away | 24/7 | — |
| 9 | Solar Alliance Mission | 77 | 5.0★ (7) | Saint Charles, 36 mi away | Sat · Sun · Evenings | — |
| 10 | Shinnova Home + Solar | 77 | 5.0★ (30) | Bridgeton, 34 mi away | Sat · Evenings | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 1,366 Google reviews, the most Google reviews on this list (1,366).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. Louis, 20 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 679 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. Louis, 18 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sappington, 18 mi away
Ranked #4 because of its Google rating and availability: 4.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mascoutah, 22 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 66 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Saint Louis, 23 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Solar panel maintenance service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Olivette, 27 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 47 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Peters, 38 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Charles, 36 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bridgeton, 34 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Charles, 36 mi away
Ranked #11 because of its Google rating and trade focus: 4.6★ from 106 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. Louis, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.0★ from 20 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. Louis, 29 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 128 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ballwin, 21 mi away
Ranked #14 because of its Google rating and trade focus: 4.6★ from 12 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Edwardsville, 33 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 119 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mascoutah, 24 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 117 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Saint Louis, 17 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 77 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Peters, 37 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Barnhart, 16 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ballwin, 22 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 817 Google reviews, 817 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fairview Heights, 21 mi away
Ranked #21 because of its Google rating and availability: 3.5★ from 24 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Charles, 37 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 104 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Florissant, 34 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Swansea, 18 mi away
Ranked #24 because of its Google rating and proximity: 5.0★ from 4 Google reviews, 18 mi from Waterloo.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Highland, 39 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 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 57 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Exceptional Electric | 73 | 4.9★ (381) | 22 mi |
| 27 | SunSent | 72 | 5.0★ (5) | 39 mi |
| 28 | SunSent Solar | 72 | 4.7★ (9) | 20 mi |
| 29 | B-Raines Slate & Solar Roofing Co. | 72 | 4.4★ (19) | 24 mi |
| 30 | SunKey Solar | 72 | 5.0★ (15) | 30 mi |
| 31 | Solarize | 72 | 5.0★ (5) | 16 mi |
| 32 | Brda Electric | 71 | 4.9★ (154) | 20 mi |
| 33 | Constructors 911 | 71 | 4.9★ (158) | 20 mi |
| 34 | EFS Energy | 71 | 4.4★ (32) | 30 mi |
| 35 | ARF Solar LLC | 71 | 4.9★ (28) | 39 mi |
| 36 | Solar Luxury LLC | 71 | 5.0★ (11) | 29 mi |
| 37 | Skyline Roofing & Solar | 71 | 4.8★ (19) | 12 mi |
| 38 | RoofTek | 71 | 4.9★ (28) | 27 mi |
| 39 | All Green Energy | 71 | 5.0★ (6) | 28 mi |
| 40 | 3MG Roofing & Solar | 71 | 4.7★ (14) | 34 mi |
| 41 | eEquals Solar | 71 | 4.2★ (140) | 35 mi |
| 42 | LVG Electrical & Communications | 70 | 4.9★ (75) | 16 mi |
| 43 | Statewide Solar | 70 | 2.3★ (3) | 37 mi |
| 44 | ECOcentrix | 70 | 5.0★ (60) | 21 mi |
| 45 | five stars electric and solar LLC | 69 | 3.2★ (11) | 18 mi |
| 46 | AKA Solar LLC | 69 | 5.0★ (5) | 36 mi |
| 47 | Exceptional Electric | 68 | 5.0★ (16) | 13 mi |
| 48 | Martin Roofing & Solar | 68 | 4.3★ (24) | 21 mi |
| 49 | RENAISSANCE Historic Exteriors | 68 | 4.8★ (39) | 22 mi |
| 50 | Day & Night Solar | 67 | 4.3★ (12) | 25 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 |
|---|---|---|
| American Patriot Solar | 5.0★ (1) | 21 mi |
| Azimuth Energy | 3.0★ (2) | 24 mi |
| Azimuth Renewables | 24 mi | |
| Cardinal Roofing & Solar Solutions | 1.0★ (1) | 20 mi |
| Gardner Capital | 1.0★ (1) | 24 mi |
| GoSolar | 1.0★ (1) | 34 mi |
| Grandinetti Services LLC | 5.0★ (2) | 26 mi |
| Lafser & Associates, Inc. | 5.0★ (1) | 21 mi |
| Martin Solar | 21 mi | |
| Midamerica Solar LLC | 4.0★ (1) | 15 mi |
| Oncore Solar STL | 19 mi | |
| Pivot Energy | 20 mi | |
| Premier Energy Group | 5.0★ (1) | 35 mi |
| R3 Renewables | 22 mi | |
| Roof Experts | 5.0★ (1) | 28 mi |
| Solar City STL Illinois | 5.0★ (1) | 17 mi |
| SolarIsland Energy | 5.0★ (1) | 21 mi |
| STL Solar Plus | 5.0★ (1) | 39 mi |
| The Power Company | 1.0★ (1) | 20 mi |
| US Solar | 5.0★ (1) | In Waterloo |
Typical prices in USD, adjusted for Illinois with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $26,020 | $29,430 | $32,010 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 0.95 East North Central factor (2025 Cost vs. Value Report) | October 2026 |
We scored 57 Waterloo 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.
| Factor | Weight | Computed from | In Waterloo data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |