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Best 5 Solar Companies in Washington, DC

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Written By Max Peterson | Last Updated: February 05, 2024

Washington homeowners are increasingly using solar panels to produce their electricity and heat their water. Local homeowners might consider solar to break free of high power costs from sources like natural gas. A professional team can help you set up and tune a system that meets your energy needs without breaking the bank. On this page, we'll showcase Washington's most reputable solar companies and offer expert advice for your solar journey.

Best High-Efficiency System
  • Builds custom, high-efficiency solar systems suited to each home
  • Extensive coverage area throughout the country
  • Offers energy storage and EV charger add-ons

Top Washington Solar Companies

Alexandria Boutique Solar Experts Logo

Alexandria Boutique Solar Experts

Based on 38 customer reviews.

Services Offered

Residential Panels Skilled Repairs Consultation Off-Grid Solar Systems Commercial Panels Maintenance


  • Reliable customer support
  • Free quotes
  • Clear pricing policy
230 N Royal St, Alexandria, VA 571-554-2575 solar-alexandria.com
SunGaze Solar, L.L.C. Logo

SunGaze Solar, L.L.C.

Based on 16 customer reviews.

Services Offered

Battery Storage Skilled Repairs Residential Panels Maintenance Financing Assistance Permit Assistance Commercial Panels


  • Reliable customer support
  • Free quotes
  • Clear pricing policy
137 National Plaza, Suite 300 - #1, Suite 300 - #1, MD 844-786-4293 sungazesolar.com
Tiger Solar Logo

Tiger Solar

Based on 17 customer reviews.

Services Offered

Residential Panels Commercial Panels Battery Storage Financing Assistance


  • Informative resources
  • Reliable customer support
  • Free quotes
8033 Penn Randall Pl B, Upper Marlboro, MD 301-355-0031 tigersolar.com
Advanced Solar Logo

Advanced Solar

Based on 155 customer reviews.

Services Offered

Permit Assistance Residential Panels Commercial Panels


  • Free quotes
  • Prompt service delivery
  • Informative resources
3321 75th Ave Suite F, Landover, MD 202-505-5401 advanced.solar

More Local Solar Companies

Solar Solution

User Reviews: 4.5/5 

4700 14th St NW
Washington, DC 20011

Free State Solar Co

User Reviews: 4.7/5 

11140 Rockville Pike
Rockville, MD 20852

Suntuity Solar

User Reviews: 4.5/5 

4351-4395 Nicole Dr #4371
Lanham, MD 20706

EDGE Energy

User Reviews: 4.5/5 

6854 Distribution Dr
Beltsville, MD 20705

Greenway home improvment

User Reviews: 4.7/5 

11325 Random Hills Rd suit 360-A145
Fairfax, VA 22030

Sky NRG Solar Inc.

User Reviews: 4.6/5 

12020 Sunrise Valley Dr #100
Reston, VA 20191

American Solar Enterprises LLC

User Reviews: 4.5/5 

46400 Benedict Dr STE 203
Sterling, VA 20164


User Reviews: 4.5/5 

13655 Dulles Technology Dr Suite 130
Herndon, VA 20171


User Reviews: 4.7/5 

313 Najoles Rd Suite P
Millersville, MD 21108

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

Ranking Methodology

Our team has carefully researched dozens of solar companies near Washington, with emphasis on the following criteria:

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Facts about Washington
Average Max Temp: 63°F
Solar Payback Period: 16.3 years
Average Daily Sunlight: 55%
Homes Powered by Solar: 83,984
Average Annual Energy Bill: $999
Solar Power per Capita Percentile: 48.0%

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Benefits of Solar Energy

Solar energy offers multiple perks. Let's look at a few of them.

  • Lower energy bills: Generating some or all of your own energy will save you money on your electric bills long-term.
  • Reduced carbon footprint: Using clean solar power means you're less dependent on fossil fuels, which emit harmful greenhouse gasses.
  • Better energy independence: Adding a solar battery lets you have trustworthy energy during grid outages and storms.

What Solar Incentives Are Available to Washington Homeowners?

District of Columbia homeowners who upgrade to solar could qualify for reimbursements, rebates, tax credits and special financing. Here are just a few of the local incentive programs.

Incentive Type: Solar Renewable Energy Credit Program

Website: icc.illinois.gov

Incentive Amount:

Negotiated with procurement administrators

Incentive Type: Property Tax Incentive

Incentive Amount:

100% exemption

Incentive Type: Personal Tax Credit

Website: ecowatch.com

Incentive Amount:

30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

How To Choose the Best Solar Company in Washington

Choosing a company is the first step toward an effective and cost-efficient solar system. Consider each of these factors in your contractor search.

Licensing and Training

To install solar energy systems in Washington, D.C., a contractor must be licensed in the trade for which the system is designed. Photovoltaic installers must be licensed electricians, solar HVAC installers must have an HVAC license and solar water heater installers must be licensed plumbers. You should also visit a company's website to learn about its private certifications. Two of the most respected are the PV Installation Professional and Solar Heating Installer certificates, backed by the North American Board of Certified Energy Practitioners (NABCEP). Some companies don't publish this information online, so you should also ask your estimator about them.

Cost of Solar Panels in Washington

The style of solar panels you select determines how much electricity you can generate. Monocrystalline panels cost more but give you the best performance. Polycrystalline panels produce less power, but they're worth it if you want a traditional panel style without the high cost. Thin-film panels aren't meant for large home installations, but they're excellent for small projects like sheds and RVs.

Additional accessories, such as battery storage and electric vehicle (EV) chargers, will add to your overall costs. However, they might make your solar system more efficient and convenient to use. Not all solar contractors offer these extras, so look for a provider that installs them if it's crucial for you.

If you're a resident of Washington and are considering getting a five-kilowatt solar energy system, you could expect to pay about $17,700 for materials and labor. See more information on specific component and panel costs in the table.

Solar Panel Cost Average Cost
Solar Monocrystalline $1,212
Solar Polycrystalline $945
Thin-Film $553
Solar Battery $776
Solar Home EV Charger $2,908

Financing Solar Energy in Washington

Choosing the best financing solution will impact your overall solar system cost and expected savings. Common payment options include power purchase agreements, loans, cash payments, and leases. Though it requires a large up-front payment, cash is the most economical choice because it doesn't accrue interest and qualifies you for incentives. Solar loans are the next best option. As with a car or home loan, you'll pay a monthly rate towards system ownership, including interest. You can still apply for valuable solar incentives, and depending on your lender, you could put as little as $0 down. Solar leases involve paying a set monthly rate to use rooftop panels. A PPA (Power Purchase Agreement) lets you pay a monthly rate based only on the energy you use, as with an electric bill. We generally don’t recommend these two options because you won't own the panels and are disqualified from using solar incentives. We advise working with a contractor that offers multiple financing options. Talk to each consultant about what's available, and acquire more than one estimate for the best odds of keeping within your spending limits.

The table below lists the average payback periods for different capacities of solar systems in Washington.

You are eligible for a 26% federal tax credit for new solar energy devices until the year 2032. Local and state governments and utility companies might also offer rebates, discounts, and specialized financing options that could save you more.

Solar System Capacity Estimated Payback period
1 kW 3.3 years
2 kW 6.5 years
5 kW 16.3 years
10 kW 32.6 years

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Frequently Asked Questions About Solar in Washington

How much money could I save by going solar in Washington?

Most Washington homeowners spend about $999 on energy each year. Your costs could drop by $649.65 for each kilowatt you generate after you pay off a solar array.

Is solar energy common in Washington?

Yes, solar energy is readily available in Washington. A growing number of local homes already use solar power on-site or through utility grids, and District of Columbia has about 1051 jobs comprising its solar economy.

Should I anticipate a property value increase after installing solar panels?

Yes, solar panels will increase your property value. According to the National Renewable Energy Laboratory (NREL), for every dollar you save on energy bills, your home value rises by $20. So, if your panels save you $600 per year on energy costs, your property could appreciate $12,000.

Could I still use solar power if I live in a rainy, wooded, or dark area?

Even if your property has high tree cover, you could still benefit from solar energy. Your installer will enhance your system's performance by selecting the proper site for panels, positioning them to capture the most sunlight throughout the year, installing a battery backup system, and cleaning them regularly. This way, you can store solar power and use it as necessary.

What's the average solar system size in Washington?

The average Washington solar system size is 8.4 kilowatts (kW). However, your final system size depends on your household's energy needs. Your surrounding shading, panel model, and roof size could also impact your final result. A professional solar company will consider these factors and determine the right array size for your home.

How long does it take to pay back a solar loan in Washington?

The average payback period for a solar loan in Washington is 19.1 years. By paying off extra principal each month, you can shorten the payback period and own your system faster.

What are some "red flags" to watch for as I research companies?

Even the most renowned Washington solar providers will have both glowing and unfavorable reviews. To make the most informed choice possible, focus on these signs to know if a company isn't worth your attention:
  • Pushy sales approach
  • Being evasive about warranties, training and credentials, cost and references
  • "One-size-fits-all" approach
  • Not thoroughly inspecting your site
  • Limited online information

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.