The cost of solar panels in Washington, DC (2024)

Updated Jul 16, 2024

  • You'll pay an average of $15,819 to install a 5 kilowatt solar panel system in Washington, DC, before incentives.

  • The federal investment tax credit (ITC) lowers that price by 30% of all your solar equipment and installation costs.

Don't overpay for solar in Washington

Compare multiple offers and save up to 20%

Please enter a five-digit zip code.

Written by: Emily Walker

As of July 2024, the average solar panel system costs $3.16/W including installation in Washington, DC. For a 5 kW installation, this comes out to about $15,819 before incentives, though prices range from $13,446 to $18,192. After the federal tax credit, the average price drops by 30%.

Average price of a 5 kW solar panel installation in Washington, DC

Good Price
$13,446 or less
Market Average
$15,819
High Price
$18,192 or more

You'll probably pay even less than what we show here. It doesn't include the federal ITC or Washington, DC state incentives, which will lower this price by at least a few thousand dollars.

Your solar panel cost depends on your system's size

It may seem obvious but larger solar panel systems cost more money. We use cost per watt ($/W) so you can easily compare quotes, controlling for slight variations in system size.

While a 5 kW system will only cost you $15,819 in Washington, DC, doubling the system size effectively doubles the price, so you'll pay about twice that for a 10 kW system. The higher the price tag, though, the more you'll get back as a credit towards your federal tax bill.

Average solar cost by system size in Washington, DC

System Size
System Cost
System Cost (after ITC)
3 kW$9,492$6,644
4 kW$12,655$8,859
5 kW$15,819$11,074
6 kW$18,983$13,288
7 kW$22,147$15,503
8 kW$25,311$17,718
9 kW$28,475$19,932
10 kW$31,639$22,147

Are solar panels worth it in Washington, DC?

Solar panels are worth it in most areas, including Washington, DC. Certain factors, including the cost of electricity, incentives, climate, and the angle at which the sun hits your roof impact how quickly you break even on your investment relative to other areas around the U.S. 

If you pay for your system with cash, you'll save about $69,800 over 20 years on electricity costs with a 5 kW system in Washington, DC. We generate this estimate based on real solar quote data from our Marketplace. It considers your system's cost, the federal tax credit, and inflation rates.

Payback Period
3.84 Years
20-Year Savings
$69,800
Cost-per-Watt
$3.16

If you can't shell out $15,819 in cash to pay for solar, don't sweat it. You can choose to finance your system with a loan instead. Some companies even offer $0-down loans so you can start saving on day one if your loan payments are less than your current electric bills. Just keep in mind that your long-term savings will be lower with a loan due to interest rates.

Find out what solar panels cost in your area in 2024
Please enter a five-digit zip code.
  • 100% free to use, 100% online
  • Access the lowest prices from installers near you
  • Unbiased Energy Advisors ready to help

The numbers we're showing are averages. The price you'll pay for solar depends on many factors unique to you and your home:

If you're looking for solar companies in DC, here are some popular suggestions:

  • IntegrateSun, LLC
    Washington, DC
    Established 2010
    Elite+ Installer
    IntegrateSun is an Earth based company that is successfully navigating oily waters. We chose to be in the busines...
    Elite+ Installer
    Screened & Verified

    IntegrateSun is an Earth based company that is successfully navigating oily waters. We chose to be in the busines...
  • Nova Solar
    Multi-state
    Established 2012
    Elite Installer
    Nova Solar has become the most trusted name in solar for DC, Maryland, and Virginia because of our commitment to ...
    Elite Installer
    Screened & Verified

    Nova Solar has become the most trusted name in solar for DC, Maryland, and Virginia because of our commitment to ...
  • Revolution Solar
    Washington, DC
    Established 2009
    Elite Installer
    We have over 2,000 installs inside of DC including flat roofs, pitched roofs, and commercial installations. Revol...
    Elite Installer
    Screened & Verified

    We have over 2,000 installs inside of DC including flat roofs, pitched roofs, and commercial installations. Revol...
  • GreenBrilliance LLC
    Multi-state
    Established 2007
    Elite Installer
    Founded in 2007, GreenBrilliance has been in business for 16 years serving, Virginia, Maryland, Washington DC, Pe...
    Elite Installer
    Screened & Verified

    Founded in 2007, GreenBrilliance has been in business for 16 years serving, Virginia, Maryland, Washington DC, Pe...
  • Solar Energy World
    Multi-state
    Established 2009
    Advanced Installer
    Why Solar Energy World?

    Solar Energy World has become the fastest growing, independently owned solar power system ...
    Advanced Installer
    Screened & Verified
    4.5 /5.0
    45 Reviews

    Why Solar Energy World?

    Solar Energy World has become the fastest growing, independently owned solar power system ...

Solar is a major purchase, but you can get the price tag to come down a bit by being an educated shopper. Taking advantage of incentives and rebates and shopping around for quotes can bring down your cost of solar in Washington, DC.

Take advantage of federal and local solar incentives

As long as your federal tax bill is high enough, you can take advantage of the federal tax credit in Washington, DC. This incentive allows you to apply 30% of your solar installation and equipment costs toward your federal tax bill. If the amount exceeds your tax bill, you can roll over the remaining credit to the following year. Many states also offer great local incentives and rebates.

Get quotes from multiple installers

Comparing multiple solar quotes can save you money through competition and transparency. Each additional quote you receive for solar will help you find the right solar panel system at the right price.

This is where EnergySage can help. With funding from the Department of Energy’s SunShot Prize, EnergySage opened the country’s first (and now the largest) marketplace for home solar panel installations. We gather custom solar quotes from local installers on your behalf and put them in an easy-to-compare format. When you compare quotes for solar panels on the EnergySage Marketplace, you can expect to see prices up to 20% lower than if you work with a single solar company.

Why shop with EnergySage?

Save time & money

Request free quotes from vetted installers in minutes

Unbiased support

Our expert Energy Advisors will help you make the right decision

Trusted, local installers

We pre-screen and monitor all of our partners

Consumer reviews of EnergySage

Back to the top
Did you find this page helpful?
Discover whole-home electrification
Home solar
rooftop solar icon

Create your own clean energy with solar panels.

Community solar
community solar icon

Enjoy the benefits of solar without rooftop panels.

Heating & cooling
Heat pump icon

Explore heat pumps, the latest in clean heating & cooling technology.