87 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Westminster: Maryland Community Solar, CR Score 86/100; 5.0★ from 95 Google reviews; open 24/7.
Best for emergencies (open 24/7): American Home Contractors, posts 24/7 hours; ranked #3 of 87.
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 87 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
87 Westminster solar installers are ranked here by CR Score, from 8 published factors. 12 are open 24/7, 50 open Saturdays and 23 open Sundays, based on posted hours. The median Google rating is 4.9★ across 87 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Maryland Community Solar | 86 | 5.0★ (95) | Columbia, 29 mi away | 24/7 | Overall |
| 2 | Key Solar Solutions | 85 | 4.9★ (109) | Spring Ridge, 11 mi away | — | — |
| 3 | American Home Contractors | 85 | 4.9★ (3,700) | Washington, D.C., 30 mi away | 24/7 | Emergencies, Most reviews |
| 4 | Celestial Solar Innovations | 83 | 5.0★ (184) | Eldersburg, 11 mi away | Sat | — |
| 5 | PanelesSolaresenUSA.com | 83 | 5.0★ (153) | Elkridge, 30 mi away | Sat · Sun | — |
| 6 | Cosmo Solaris | 83 | 4.5★ (27) | Baltimore, 23 mi away | 24/7 | — |
| 7 | EcoGen America | 82 | 4.8★ (9) | Columbia, 26 mi away | 24/7 | — |
| 8 | Lumina Solar | 82 | 4.9★ (763) | Baltimore, 28 mi away | Sat | — |
| 9 | Shanco Roofing | 81 | 4.9★ (401) | Gaithersburg, 30 mi away | 24/7 | — |
| 10 | AC Matthews, Roofing & Exteriors | 81 | 5.0★ (140) | Towson, 24 mi away | 24/7 | — |
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 availability: 5.0★ from 95 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Spring Ridge, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 109 Google reviews, listed on Google as “Solar energy system service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Washington, D.C., 30 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 3,700 Google reviews, the most Google reviews on this list (3,700).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Eldersburg, 11 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 184 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Elkridge, 30 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 23 mi away
Ranked #6 because of its Google rating and availability: 4.5★ from 27 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Columbia, 26 mi away
Ranked #7 because of its Google rating and availability: 4.8★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 28 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 763 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gaithersburg, 30 mi away
Ranked #9 because of its Google rating and availability: 4.9★ from 401 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Towson, 24 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 140 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Columbia, 25 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 29 mi away
Ranked #12 because of its Google rating and availability: 3.9★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockville, 34 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thurmont, 20 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 27 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hampstead, 13 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 31 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Solar energy system service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 39 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 271 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Frederick, 25 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 46 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Arbutus, 28 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Laurel, 34 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 43 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Beltsville, 36 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 231 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Arbutus, 30 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Laurel, 34 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 839 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ashton-Sandy Spring, 33 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 71 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in York, 30 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 789 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 87 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Solar Panels | 77 | 4.3★ (6) | 26 mi |
| 27 | Solar Jedi Empire | 77 | 5.0★ (8) | 29 mi |
| 28 | JC Solar, LLC | 77 | 4.3★ (22) | 14 mi |
| 29 | ROI Construction | 77 | 4.9★ (311) | 33 mi |
| 30 | Glim Solar LLC | 77 | 4.8★ (58) | 31 mi |
| 31 | FREDERICK SOLAR CO | 76 | 3.7★ (6) | 25 mi |
| 32 | SolarPanel RoofNSave Gettysburg | 76 | 5.0★ (3) | 22 mi |
| 33 | Sunrun Solar | 76 | 4.0★ (495) | 36 mi |
| 34 | Renewable Energy Corporation | 76 | 4.7★ (342) | 22 mi |
| 35 | Allstate Roofing & More LLC | 75 | 5.0★ (9) | 26 mi |
| 36 | PWR Energy Solar | 75 | 5.0★ (12) | 30 mi |
| 37 | GC Solar | 75 | 5.0★ (4) | 20 mi |
| 38 | Maryland State Solar | 75 | 4.9★ (37) | 34 mi |
| 39 | Direct Energy Solar | 75 | 3.6★ (12) | 28 mi |
| 40 | Zenith Inc | 75 | 4.8★ (154) | 15 mi |
| 41 | TC Backer Construction | 74 | 4.9★ (49) | 30 mi |
| 42 | Ark Home & Solar | 74 | 5.0★ (10) | 34 mi |
| 43 | Aduu Solar | 74 | 4.7★ (24) | 40 mi |
| 44 | American Sentry Solar | 74 | 4.6★ (434) | 34 mi |
| 45 | Nu Look Roofing, Siding, and Windows | 73 | 4.7★ (584) | 28 mi |
| 46 | Sustainably Solar | 73 | 5.0★ (5) | 34 mi |
| 47 | Eastern Exteriors, LLC | 73 | 5.0★ (89) | 26 mi |
| 48 | Mosaic Home Remodeling DBA Capital Property Restoration | 73 | 4.9★ (37) | 26 mi |
| 49 | Solar Doctors LLC | 72 | 4.9★ (29) | 31 mi |
| 50 | Unbeatable Solar Pros | 72 | 5.0★ (7) | 33 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 |
|---|---|---|
| Ameresco | 1.0★ (1) | 28 mi |
| Ameresco Solar | 5.0★ (1) | 36 mi |
| American Electric Solar, LLC | 1.0★ (2) | 15 mi |
| Baltimore’s Best Energy | 5.0★ (1) | 24 mi |
| Capital Solar Group | 5.0★ (1) | 33 mi |
| Carroll St Solar | In Westminster | |
| Earth and Air Technologies, LLC | In Westminster | |
| EDF Renewables | 5.0★ (1) | 29 mi |
| Energy Savers America | In Westminster | |
| Green Light Electrical Contractors | 5.0★ (5) | In Westminster |
| GreenBrilliance | 5.0★ (1) | 30 mi |
| Lightility | 5.0★ (1) | 34 mi |
| McClure Company | 2.0★ (1) | In Westminster |
| Remark Electric Inc | 5.0★ (5) | In Westminster |
| Residential Electric Solutions | 4.9★ (12) | In Westminster |
| Sol contracting llc | 5.0★ (2) | 39 mi |
| Solaris Solar Solutions | 5.0★ (1) | 39 mi |
| SolarwithJG | 5.0★ (1) | 29 mi |
| Tim Kyle Electric, Heating & Cooling | 5.0★ (2,777) | In Westminster |
| Triple R Roofing & Siding | 4.9★ (57) | In Westminster |
Typical prices in USD, adjusted for Maryland with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Solar panel installation | $27,400 | $30,990 | $33,710 | Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.00 South Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
We scored 87 Westminster 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 Westminster 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 |