This guide compares ten solar energy providers serving Maryland while preserving the original article's companies and order. It is designed for shortlisting, not as a claim that every option was personally tested. Compare current credentials, written terms, total cost, availability and the category-specific questions below before choosing.
Quick comparison of 10 solar energy providers
| # | Company | Published location | Published phone | Website |
|---|---|---|---|---|
| 1 | SunPower Solar Panels | Confirm directly | 1-800-787-7683 | Website |
| 2 | APEX Solar | Frederick, MD | 3013552860 | Website |
| 3 | Tesla SolarCity | Frederick, MD | 410-535-9095 | Website |
| 4 | Trinity Solar | Confirm directly | (888) 721 7374 | Website |
| 5 | Solar SME INC. | Bowie, MD | https://solarsme.com/ | Website |
| 6 | Palmetto Solar | Confirm directly | (855) 339-1831 | Website |
| 7 | Sunrun | Confirm directly | (833) 324-5886 | Website |
| 8 | Old Line Roofing and Solar | : | (410) 769 3735 | Website |
| 9 | ADT Solar | Baltimore, MD 21234 | (410) 769 3735 | Website |
| 10 | Lumina Solar | Confirm directly | (800) 971 6118 | Website |
How this guide was refreshed
This August 12, 2026 editorial rebuild preserves the ten names and their original order. The order is not a newly calculated quality ranking. Maryland Recommendations did not hire, test or independently audit every listed business. Payment does not purchase rank, remove cautions or guarantee visibility. The useful contribution is a consistent comparison framework, clearer contact data, official verification resources and questions readers can use before committing.
Compare provider business models, financing, monitoring and service responsibility. Every reader's priorities differ, so shortlist two or three options and ask each one the same questions. Written answers are easier to compare than promotional claims or star ratings alone.
The 10 solar energy providers in this guide
1. SunPower Solar Panels
SunPower Solar Panels is retained from the original Maryland Recommendations list. Use the published details below as a starting point, then confirm who designs, installs and services the system and which production assumptions and equipment are written into the proposal. Availability, staff, services, prices and policies can change, so obtain current written information before booking, signing or paying.
Published phone: 1-800-787-7683
Website: Visit the company website
2. APEX Solar
Consider APEX Solar as one option for solar-provider models. During the first conversation, confirm which production assumptions and equipment are written into the proposal. Before making a decision, also ask who owns the system and receives incentives. This page does not claim first-hand testing or guarantee service quality; the listing is a contact and comparison aid.
Published location: Frederick, MD
Published phone: 3013552860
Website: Visit the company website
3. Tesla SolarCity
Tesla SolarCity appears here in the original article’s order, not as the result of a paid position or a hidden quality score. Compare the business on the same criteria used for every listing: who owns the system and receives incentives, who handles permits, interconnection, monitoring and roof work, written terms and current contact information.
Published location: Frederick, MD
Published phone: 410-535-9095
Website: Visit the company website
4. Trinity Solar
Trinity Solar is retained from the original Maryland Recommendations list. Use the published details below as a starting point, then confirm who handles permits, interconnection, monitoring and roof work and who designs, installs and services the system. Availability, staff, services, prices and policies can change, so obtain current written information before booking, signing or paying.
Published phone: (888) 721 7374
Website: Visit the company website
5. Solar SME INC.
Consider Solar SME INC. as one option for solar-provider models. During the first conversation, confirm who designs, installs and services the system. Before making a decision, also ask which production assumptions and equipment are written into the proposal. This page does not claim first-hand testing or guarantee service quality; the listing is a contact and comparison aid.
Published location: Bowie, MD
Published phone: https://solarsme.com/
Website: Visit the company website
6. Palmetto Solar
Palmetto Solar appears here in the original article’s order, not as the result of a paid position or a hidden quality score. Compare the business on the same criteria used for every listing: which production assumptions and equipment are written into the proposal, who owns the system and receives incentives, written terms and current contact information.
Published phone: (855) 339-1831
Website: Visit the company website
7. Sunrun
Sunrun is retained from the original Maryland Recommendations list. Use the published details below as a starting point, then confirm who owns the system and receives incentives and who handles permits, interconnection, monitoring and roof work. Availability, staff, services, prices and policies can change, so obtain current written information before booking, signing or paying.
Published phone: (833) 324-5886
Website: Visit the company website
8. Old Line Roofing and Solar
Consider Old Line Roofing and Solar as one option for solar-provider models. During the first conversation, confirm who handles permits, interconnection, monitoring and roof work. Before making a decision, also ask who designs, installs and services the system. This page does not claim first-hand testing or guarantee service quality; the listing is a contact and comparison aid.
Published location: :
Published phone: (410) 769 3735
Website: Visit the company website
9. ADT Solar
ADT Solar appears here in the original article’s order, not as the result of a paid position or a hidden quality score. Compare the business on the same criteria used for every listing: who designs, installs and services the system, which production assumptions and equipment are written into the proposal, written terms and current contact information.
Published location: Baltimore, MD 21234
Published phone: (410) 769 3735
Website: Visit the company website
10. Lumina Solar
Lumina Solar is retained from the original Maryland Recommendations list. Use the published details below as a starting point, then confirm which production assumptions and equipment are written into the proposal and who owns the system and receives incentives. Availability, staff, services, prices and policies can change, so obtain current written information before booking, signing or paying.
Published phone: (800) 971 6118
Website: Visit the company website
How to compare your shortlist
Roof, shade and electricity-use assessment
Ask who designs, installs and services the system. Request a specific answer tied to your project, appointment, purchase or visit rather than relying on a general promise. Record the response so every option is judged consistently.
System size, production assumptions and equipment
Ask which production assumptions and equipment are written into the proposal. Request a specific answer tied to your project, appointment, purchase or visit rather than relying on a general promise. Record the response so every option is judged consistently.
Cash, loan, lease or power-purchase terms
Ask who owns the system and receives incentives. Request a specific answer tied to your project, appointment, purchase or visit rather than relying on a general promise. Record the response so every option is judged consistently.
Permits, interconnection, monitoring and service responsibility
Ask who handles permits, interconnection, monitoring and roof work. Request a specific answer tied to your project, appointment, purchase or visit rather than relying on a general promise. Record the response so every option is judged consistently.
Official sources and independent verification
Use primary sources for credentials, consumer protections and category rules. A business website or directory profile is not a substitute for an official record.
A practical selection checklist
- Define the exact outcome, location, timing and budget before contacting anyone.
- Shortlist at least two or three options that appear to serve the need.
- Verify applicable licenses, credentials, insurance or inspection records using the official sources above.
- Ask every option the same category-specific questions and keep the answers.
- Request written scope, exclusions, total charges, payment timing and cancellation terms.
- Confirm who performs the work or service and who handles problems afterward.
- Read the final agreement before paying a deposit or authorizing work.
Related Maryland guides
Frequently asked questions
How should I shortlist solar energy providers in Maryland?
Start with the ten published options, remove businesses that do not match your location or need, then compare two or three on the same questions. Verify current credentials where applicable, request written terms and confirm who will actually provide the service. Convenience matters, but it should not replace documentation and fit.
What should I verify before choosing?
Compare multiple site-specific proposals, verify applicable contractor credentials and read every ownership, financing, production and service term.
What should a written estimate or agreement include?
A useful solar proposal identifies system size, equipment, production assumptions, roof work, price, financing, incentives, permits, interconnection, monitoring and warranties.
Should I choose only by price or online reviews?
No. Price and reviews are useful signals, but neither proves current fit, licensing, availability or contract quality. Compare the complete scope, exclusions, responsible provider, total cost, policies, communication and verification records. Treat unusually vague or urgent sales pressure as a reason to slow down and request documentation.
How current are these solar energy providers details?
This page was substantively refreshed on August 12, 2026. Company names, locations, phones, websites and policies can change after publication. Confirm every decision-making detail directly, especially credentials, ownership, availability, prices, deposits, cancellation terms and the identity of the person who will perform the work.
