☀️ Solar panels in Washington, DC: cost & savings (2026)
Cost after tax credit: $16,800 · Payback: 14.1 years · Est. savings: $1,188/year.
With about 671,803 residents, Washington is a major metro and the largest city in District of Columbia. Homes here pay District of Columbia's residential rate of 16¢/kWh (about $106/month), so a typical 8 kW solar system — roughly $16,800 after the 30% federal tax credit — saves close to $1,188/year and pays back in about 14.1 years. That makes solar a longer-term play in Washington. Below, compare nearby District of Columbia cities and get real quotes.
Is solar worth it in Washington?
Solar pays off fastest where power is expensive and the sun is strong. In Washington, electricity runs about 16¢/kWh and South sunlight gives a production factor of 1.10×. A standard system offsetting most of a $106/month bill returns roughly $1,188/year and pays for itself in about 14.1 years.
Your real result depends on roof, shading, exact usage and installer pricing. Always compare a couple of real Washington quotes before signing.
See Washington electricity rates → · All District of Columbia solar →
Washington solar FAQ
How much do solar panels cost in Washington, DC?
A typical 8 kW home system is around $24,000 before incentives, or about $16,800 after the 30% federal tax credit in Washington. Local utility or District of Columbia incentives can lower it further.
Is solar worth it in Washington?
In Washington it's a longer-term play: with District of Columbia electricity at 16¢/kWh and South sunlight, a system saves roughly $1,188/year and pays for itself in about 14.1 years, then produces largely free power for the rest of its 25+ year life.
How much can I save with solar in Washington?
About $1,188 per year and roughly $12,900 over 25 years after the system pays for itself. Exact savings depend on your roof, shading and usage.
How do I get cheap solar in Washington?
Get at least three quotes from installers active in Washington, claim the 30% federal tax credit, stack any District of Columbia or utility rebates, and avoid oversizing the system beyond your $106/month usage.