Solar power has become increasingly popular in Maryland over the last few years. According to the Solar Energy Industries Association, it’s ranked 18th in the United States for solar power as of 2022, up from 27th just a year ago. More than 81,000 solar installations have been completed in the state.

Maryland residents considering going solar have dozens of providers to choose from. We at the This Old House Reviews Team have reviewed the best solar installation companies across the country and highlighted our top recommendations for the Old Line State.



Compare Solar Companies Across MD

Star Rating Superlative Location Presence BBB Rating Link
Best High-Efficiency System 50 States A+
ADT Solar
Best Solar Warranty 23 States A+
Best Solar Panel Leasing 20 States A+
Best Certified Installer 9 States A+
Best Customer Support 24 States A+
Tesla Solar
Best Solar Tech 50 States NR
Logo SunPower
Star Rating
Superlative Best High-Efficiency System
Location Presence 50 States
BBB Rating A+
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ADT Solar
Logo ADT Solar
Star Rating
Superlative Best Solar Warranty
Location Presence 23 States
BBB Rating A+
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Logo Sunrun
Star Rating
Superlative Best Solar Panel Leasing
Location Presence 20 States
BBB Rating A+
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Logo Trinity
Star Rating
Superlative Best Certified Installer
Location Presence 9 States
BBB Rating A+
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Logo Palmetto
Star Rating
Superlative Best Customer Support
Location Presence 24 States
BBB Rating A+
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Tesla Solar
Logo Tesla Solar
Star Rating
Superlative Best Solar Tech
Location Presence 50 States
BBB Rating NR
Get Quote

Maryland’s Top Solar Energy Companies:


Our Top Solar Company Picks for Maryland

SunPower Best High-Efficiency System
  • Why We Picked It: SunPower Solar is available in all 50 states plus Washington D.C., making it one of the largest companies on our list. It sells and installs its panels through local distributors.
Pros and Cons
Pros 25-year all-inclusive warranty covering full system and components High-efficiency panels Solar components, batteries, and electric vehicle chargers produced in-house Cons Local Maryland distributor has a B- from the BBB More expensive than competitors
Sunpower Solar Details

SunPower offers some of the highest-efficiency panels available. Its panels are produced by Maxeon, a former subsidiary of the company, and work optimally with its other in-house components.

SunPower offers a comprehensive 25-year warranty covering all system elements, including shipping and installation. The company claims that its panels will perform at 92% capacity after 25 years, higher than the average guarantee of 80.7%.

SunPower’s high-quality panels come at a premium price. The company also doesn’t sell directly to customers and operates through a network of local distributors instead. Edge Energy serves the Maryland, Virginia, and D.C. area. This company has an average rating from the Better Business Bureau (BBB) but high customer ratings on SolarReviews.

Learn more: SunPower Solar Review


ADT Solar Best Solar Warranty
  • Why We Picked It: The home security company ADT purchased SunPro Solar in 2021 and rebranded as ADT Solar. It now offers integrated smart-home solar energy solutions that can pair with its home security systems.
Pros and Cons
Pros 25-year power production guarantee PPA and lease options Wide variety of products Cons Mixed customer reviews No pricing information online
ADT Solar Details

ADT Solar offers brand-name products including Tesla Powerwall batteries and Enphase microinverters. It offers maximum protection for your solar investment, including extended warranty coverage on labor, panels, and inverters. Its 25-year power production guarantee states that your system will produce a projected amount of energy throughout its lifetime or the company will pay you $.10 for each kilowatt-hour (kWh) that it falls short.

ADT Solar has multiple branches across the United States. Some customers have reported spam calls or high-pressure sales tactics, but this experience seems to vary widely, with others reporting good interactions with sales representatives.

Learn more: ADT Solar Review


Sunrun Best Solar Panel Leasing
  • Why We Picked It: Sunrun, which recently acquired Vivint Solar, offers various financing options, including two lease types. Each option includes system monitoring and comprehensive insurance.
Pros and Cons
Pros 10-year warranty on parts and workmanship Loan and two lease options Solar batteries and EV charging Cons Mixed customer reviews Limited product information online
Sunrun Details

Sunrun offers full purchases, solar loans, and two leasing options for maximum flexibility. The first lease option is a monthly contract with little to no money down. The second option is a 25-year lease that allows you to pay in one lump sum. Both lease options include full maintenance and system monitoring.

In addition to solar panels, Sunrun offers leading solar panel batteries from LG Chem and Tesla. Solar batteries allow you to store energy to use at night or during low-sunlight hours. Sunrun’s bumper-to-bumper warranties cover the entire system plus roof leaks for 10 years.

Learn more: Sunrun Review


Palmetto Best Customer Support
  • Why We Picked It: Palmetto Solar is our top choice for customer service. It offers comprehensive solar panel design and installation services, and its online savings calculator allows you to estimate how much money you’ll save by going solar.
Pros and Cons
Pros 25-year performance guarantee on panels App for monitoring system performance Battery storage available Cons Additional monthly fee for monitoring No lease or PPA options
Palmetto Solar Details

Palmetto Solar’s expert team can guide you through the design, installation, and maintenance process. The company’s representatives will also help you sign up for available tax incentives and rebates. Palmetto doesn’t provide pricing information online, but its website claims Maryland homeowners can install solar panels for as little as $85 per month and save an average of $24,565 over 25 years.

Palmetto Solar’s 25-year performance guarantee is one of the longest in the industry. The company provides several additional services, such as the Palmetto Protect plan, which ensures your system works at peak efficiency. This plan starts at $8 per month for system monitoring and prioritized customer support.

Solar installation companies typically offer four financing options: up-front purchase, solar loan, solar lease, or power purchase agreement (PPA). Up-front purchases require you to pay for your system in full, while solar loans allow you to space out the cost in monthly payments with interest. These are the only two payment options Palmetto offers, but both ensure you own your system and qualify for cost-saving tax incentives.

Other companies will install the system for free and allow you to lease the panels at a set monthly rate. You can also enter into a power purchase agreement (PPA), which allows you to pay only for the power you produce, similar to a monthly electricity bill. However, these options won’t grant you system ownership and disqualify you from tax incentives.

Learn more: Palmetto Solar Review


Trinity Best Certified Installer
  • Why We Picked It: Trinity Solar has been in the industry for nearly 30 years and is the only family-owned business on our list.
Pros and Cons
Pros Family-owned and operated Nearly three decades in the industry Positive customer service reviews Cons Limited product information Workmanship warranty only lasts 5 years
Trinity Solar Details

Trinity Solar has installed more than 77,000 solar systems in nine states, making it the most experienced company on our list. It’s been servicing Maryland since 2015, where it’s helping the state to meet its renewable energy goals by 2040. The company’s solar panel systems may be purchased, financed, or leased. You can also add battery storage and backup.

Trinity’s 5-year workmanship warranty is short compared to industry standards, and the company doesn’t guarantee savings on your electric bill. We still recommend the company because it has a good reputation and strong track record.



Solar Incentives in Maryland

Solar owners in Maryland may qualify for various state and federal rebates and tax credits. We’ve highlighted the key Maryland solar incentives below.

  • Federal Solar Investment Tax Credit (ITC): The federal solar tax credit allows you to claim 30% of your solar installation costs on your federal tax return. This rate will reduce to 26% in 2033 and 22% in 2034 before ending. You must purchase your system in full or take out a loan to qualify.
  • Maryland Energy Storage Income Tax Credit: The Maryland Energy Storage Income Tax Credit provides a state tax credit of up to $5,000 to solar owners who install battery backup storage.
  • Maryland Solar Property Tax Exemption: Maryland exempts solar customers from paying taxes on the increased home value from installing solar panels. Solar power equipment is also exempt from sales tax. 
  • Residential Clean Energy Rebate Program: Homeowners who install clean energy systems may be eligible for a $1,000 solar rebate from the Maryland Energy Administration.
  • Net-metering: All investor-owned utilities in Maryland must offer net-metering programs, which allow customers to sell excess energy generated by their solar systems to the utility company at the retail rate.
  • Solar Renewable Energy Certificates (SRECs): You earn one solar renewable energy certificate for every 1 kWh of solar energy you produce. You can sell SRECs to participating companies looking to invest in solar energy. You must be registered with the Maryland Public Service Commission (PSC) to participate.

A few Maryland counties offer additional tax credits, including Harford County, Anne Arundel County, Baltimore County, and Prince George’s County. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) for more information.



Our Conclusion

We recommend getting at least three quotes from solar installers to compare pricing and services, as the price you’ll pay to go solar can vary significantly between installers. The providers listed above are an excellent place to start, but here are a few well-reviewed local Maryland solar companies to consider:

  • Solar Energy World (Elkridge)
  • Lumina Solar (Baltimore)
  • Celestial Solar (Frederick)
  • Solar SME (Annapolis)
  • Aurora Energy (Columbia)

Our top pick is Palmetto Solar due to its well-rated customer service, 25-year performance guarantee, and comprehensive Palmetto Protect plan. Whichever provider you choose, consider product selection, financing, warranties, performance monitoring, and customer reviews.



FAQs About Solar Companies in Maryland



Our Methodology

The This Old House Reviews Team is committed to providing comprehensive and unbiased reviews to our readers. After over a thousand hours of research on solar companies, interviews with experts, and common customer needs, we’ve created a detailed rating system for solar providers based on six factors:

  • Solar equipment, installation, and services (25%)
  • Warranty and performance guarantees (25%)
  • Brand reputation and certifications (15%)
  • Financing options (15%)
  • Experience (10%)
  • Availability (10%)

Total scores are divided by 20 for a final 5-point rating scale.

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