89 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Joppatowne: Maryland Community Solar, CR Score 85/100; 5.0★ from 95 Google reviews; open 24/7.
Best for emergencies (open 24/7): American Home Contractors, posts 24/7 hours; ranked #2 of 89.
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 89 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
89 Joppatowne 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 89 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Maryland Community Solar | 85 | 5.0★ (95) | Columbia, 33 mi away | 24/7 | Overall |
| 2 | American Home Contractors | 84 | 4.9★ (3,700) | Washington, D.C., 37 mi away | 24/7 | Emergencies, Most reviews |
| 3 | PanelesSolaresenUSA.com | 83 | 5.0★ (153) | Elkridge, 30 mi away | Sat · Sun | — |
| 4 | Rising Sun Solar Solutions LLC | 83 | 5.0★ (19) | Baltimore, 7 mi away | Sat · Sun · Evenings | — |
| 5 | Lumina Solar | 83 | 4.9★ (763) | Baltimore, 22 mi away | Sat | — |
| 6 | Cosmo Solaris | 83 | 4.5★ (27) | Baltimore, 22 mi away | 24/7 | — |
| 7 | AC Matthews, Roofing & Exteriors | 82 | 5.0★ (140) | Towson, 14 mi away | 24/7 | — |
| 8 | JK Mechanical | 82 | 4.9★ (1,332) | Willow Street, 36 mi away | 24/7 | — |
| 9 | GreenBrilliance | 81 | 3.9★ (7) | Baltimore, 18 mi away | 24/7 | — |
| 10 | Solar-Verse | 81 | 5.0★ (271) | Washington, D.C., 29 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 availability: 5.0★ from 95 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Washington, D.C., 37 mi away
Ranked #2 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 Elkridge, 30 mi away
Ranked #3 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, 7 mi away
Ranked #4 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 Baltimore, 22 mi away
Ranked #5 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 Baltimore, 22 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 Towson, 14 mi away
Ranked #7 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 Willow Street, 36 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 1,332 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 18 mi away
Ranked #9 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 Washington, D.C., 29 mi away
Ranked #10 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 Columbia, 32 mi away
Ranked #11 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 Ashton-Sandy Spring, 16 mi away
Ranked #12 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 Eldersburg, 33 mi away
Ranked #13 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 Arbutus, 23 mi away
Ranked #14 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 Arbutus, 22 mi away
Ranked #15 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 Annapolis, 34 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Columbia, 33 mi away
Ranked #17 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 Bel Air, 5 mi away
Ranked #18 because of its Google rating and trade focus: 4.6★ from 434 Google reviews, listed on Google as “Solar energy company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Baltimore, 9 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ 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 Baltimore, 20 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Solar energy company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Edgewater, 38 mi away
Ranked #21 because of its Google rating and availability: 4.9★ from 139 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Laurel, 36 mi away
Ranked #22 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, 40 mi away
Ranked #23 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 Laurel, 39 mi away
Ranked #24 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 Newark, 34 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 17 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 89 ranked solar installers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Renewable Energy Corporation | 77 | 4.7★ (342) | 15 mi |
| 27 | Know About Solar | 77 | 4.9★ (20) | 18 mi |
| 28 | KW Solar Solutions, Inc | 77 | 4.9★ (36) | 29 mi |
| 29 | Klekner Solar Energy Solutions | 76 | 5.0★ (39) | 31 mi |
| 30 | ROI Construction | 76 | 4.9★ (311) | 37 mi |
| 31 | Solar Panels | 76 | 4.3★ (6) | 32 mi |
| 32 | The Solar Brokers of Maryland | 76 | 5.0★ (54) | 39 mi |
| 33 | Sunrun Solar | 76 | 4.0★ (495) | 40 mi |
| 34 | Green World Renewable Energy | 75 | 5.0★ (5) | 21 mi |
| 35 | New Earth Solar | 75 | 5.0★ (25) | 39 mi |
| 36 | Turner Roofing Company | 74 | 4.7★ (124) | 5 mi |
| 37 | Power Factor | 74 | 5.0★ (24) | 14 mi |
| 38 | GC Solar | 74 | 5.0★ (4) | 21 mi |
| 39 | Solar SME, INC. | 74 | 4.5★ (121) | 39 mi |
| 40 | Paradise Energy Solutions | 74 | 5.0★ (162) | 40 mi |
| 41 | Maryland State Solar | 74 | 4.9★ (37) | 37 mi |
| 42 | Allstate Roofing & More LLC | 74 | 5.0★ (9) | 32 mi |
| 43 | JC Solar, LLC | 74 | 4.3★ (22) | 32 mi |
| 44 | All Work Services and Construction | 74 | 4.9★ (77) | 37 mi |
| 45 | HASI | 74 | 5.0★ (3) | 34 mi |
| 46 | Direct Energy Solar | 73 | 3.6★ (12) | 34 mi |
| 47 | Zenith Inc | 73 | 4.8★ (154) | 23 mi |
| 48 | Sustainably Solar | 73 | 5.0★ (5) | 31 mi |
| 49 | Nu Look Roofing, Siding, and Windows | 73 | 4.7★ (584) | 31 mi |
| 50 | CMI ELECTRIC, INC. | 72 | 4.4★ (11) | 37 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 |
|---|---|---|
| Alpha Energy | 5.0★ (1) | 35 mi |
| Ameresco | 1.0★ (1) | 31 mi |
| Ameresco Solar | 5.0★ (1) | 7 mi |
| American Electric Solar, LLC | 1.0★ (2) | 33 mi |
| Baltimore’s Best Energy | 5.0★ (1) | 19 mi |
| Capital Solar Group | 5.0★ (1) | 27 mi |
| Chaparral Business Solutions LLC | 5.0★ (1) | 39 mi |
| EDF Renewables | 5.0★ (1) | 31 mi |
| GreenBrilliance | 5.0★ (1) | 36 mi |
| GridKicker | 12 mi | |
| Keller Energy | 10 mi | |
| McClure Company | 2.0★ (1) | 36 mi |
| Mr. Solar® Systems & Components Distributor | 9 mi | |
| ND Energy LLC | 14 mi | |
| Olympic Heating & Air Conditioning Company, Inc. | 10 mi | |
| Olympic Heating & Air Conditioning Company, Inc. | 15 mi | |
| Partner Energy Group | 13 mi | |
| Sol contracting llc | 5.0★ (2) | 25 mi |
| Solar photovoltaic power plant | 5.0★ (1) | 35 mi |
| Solaris Solar Solutions | 5.0★ (1) | 30 mi |
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 89 Joppatowne 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 Joppatowne 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 |