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Solar Panel Cost in District of Columbia
6 kW system cost and incentives for DC homeowners.
By Jessica Martinez · Updated June 20266 kW system cost and incentives for DC homeowners.
By Jessica Martinez · Updated June 2026A 6 kW home solar system in DC runs about $25,200 before incentives. For DC homeowners, the 30% federal tax credit brings that to roughly $17,640 out of pocket, a difference of about $7,560.
Urban labor rates and small, shaded, or shared rooftops push DC's installed cost up. DC has an active Solar Renewable Energy Credit market that pays for each megawatt-hour a system generates. The solar cost calculator and system size calculator can turn that into a figure based on your actual DC bill.
| System size | 6 kW |
|---|---|
| Price before incentives | $25,200 |
| 30% federal tax credit | -$7,560 |
| Price after credit | $17,640 |
System size in DC should track your electricity use, not a flat 6 kW default. Run your zip code and monthly bill through the system size calculator to see how many panels your DC home actually needs.
The 30% federal Residential Clean Energy Credit applies to any DC homeowner who owns their system outright (see the tax credit calculator). The right number for your DC home depends on usage, roof angle, and shading. Model your full DC picture in the savings calculator.
How much does a 6 kW solar system cost in DC? A 6 kW residential system in DC runs about $25,200 before incentives and about $17,640 after the 30% federal tax credit, a difference of roughly $7,560.
Does DC have solar incentives beyond the federal credit? Installer competition and local permitting rules both move the final DC price. Check the incentives section above for how that applies to your DC system.
Is 6 kW the right system size for your DC home? It depends on your bill and roof. Use the system size calculator to size a system around your actual DC electricity use rather than a flat 6 kW figure.
run your own DC numbers in the cost calculatorestimate DC payback in the savings calculatorcheck your DC federal credit amountsee installed prices in Delawarecompare DC costs to Florida