This guide compares ten solar installation companies 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 installation companies
| # | Company | Published location | Published phone | Website |
|---|---|---|---|---|
| 1 | Solar Energy World | Laurel, MD | +1 866-856-4580 | Website |
| 2 | Solar Energy Services, Inc. | Millersville, MD | +1 410-923-6090 | Website |
| 3 | Lumina Solar | Baltimore, MD | +1 800-971-6118 | Website |
| 4 | Why Free Solar Company | National Harbor, MD | +1 301-326-7333 | Website |
| 5 | Advanced Solar | Landover, MD | +1 202-505-5401 | Website |
| 6 | Renewable Energy Corporation | Timonium, MD | Confirm directly | Website |
| 7 | EDGE Energy | Beltsville, MD | +1 301-321-7868 | Website |
| 8 | Solar-Verse | Millersville, MD | +1 443-971-7421 | Website |
| 9 | MSSI - Maryland Solar Solutions, Inc | Owings Mills, MD | +1 410-363-4300 | Website |
| 10 | American Sentry Solar | Bel Air, MD | +1 410-557-0555 | Website |
How this guide was refreshed
This September 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 local installers, project design and installation accountability. 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 installation companies in this guide
1. Solar Energy World
Solar Energy World 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 location: Laurel, MD
Published phone: +1 866-856-4580
Website: Visit the company website
2. Solar Energy Services, Inc.
Consider Solar Energy Services, Inc. as one option for Maryland installer shortlist. 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: Millersville, MD
Published phone: +1 410-923-6090
Website: Visit the company website
3. Lumina Solar
Lumina 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 owns the system and receives incentives, who handles permits, interconnection, monitoring and roof work, written terms and current contact information.
Published location: Baltimore, MD
Published phone: +1 800-971-6118
Website: Visit the company website
4. Why Free Solar Company
Why Free Solar Company 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 location: National Harbor, MD
Published phone: +1 301-326-7333
Website: Visit the company website
5. Advanced Solar
Consider Advanced Solar as one option for Maryland installer shortlist. 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: Landover, MD
Published phone: +1 202-505-5401
Website: Visit the company website
6. Renewable Energy Corporation
Renewable Energy Corporation 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 location: Timonium, MD
Website: Visit the company website
7. EDGE Energy
EDGE Energy 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 location: Beltsville, MD
Published phone: +1 301-321-7868
Website: Visit the company website
8. Solar-Verse
Consider Solar-Verse as one option for Maryland installer shortlist. 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: Millersville, MD
Published phone: +1 443-971-7421
Website: Visit the company website
9. MSSI - Maryland Solar Solutions, Inc
MSSI – Maryland Solar Solutions, Inc 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: Owings Mills, MD
Published phone: +1 410-363-4300
Website: Visit the company website
10. American Sentry Solar
American Sentry 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 location: Bel Air, MD
Published phone: +1 410-557-0555
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 installers 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 installation companies details?
This page was substantively refreshed on September 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.
