How Much Do Solar Panels Cost in Washington, DC?
In 2026, solar panels in Washington, DC cost $17,400–$42,000 before incentives — about $2.90–$3.50 per watt installed. DC's nation-leading SREC income and full net metering make it one of the strongest solar markets in the country.
DC Solar Cost by System Size (2026)
| System Size | Typical Home | Cost Before Incentives |
|---|---|---|
| 6 kW | Small rowhouse | $17,400–$21,000 |
| 8 kW | Typical DC rowhouse | $23,200–$28,000 |
| 10 kW | Large rowhouse / semi-detached | $29,000–$35,000 |
| 12 kW | Detached home | $34,800–$42,000 |
Ranges reflect roof complexity, panel tier, and electrical work. Rowhouse flat roofs are often simpler installs than pitched roofs.
What Determines Your Cost
Roof type. DC rowhouse flat roofs use ballasted racking — usually the lower end of the range. Slate and metal pitched roofs cost more.
System size. Priced per watt: bigger systems cost more in total but less per watt.
Electrical panel. Older DC homes sometimes need a panel upgrade (adds $1,500–$3,000).
Equipment tier. Premium panels and battery-ready inverters raise the per-watt price.
Three Ways to Pay — What Each Really Costs
Cash purchase — Highest lifetime savings; you keep 100% of SREC income.
Solar loan ($0 down) — Own the system and keep incentives; monthly payment typically at or below your old Pepco bill.
PPA ($0 install) — No upfront cost, fixed electricity rate locked for 25 years, zero maintenance. Most popular with our customers; the tradeoff is the provider keeps the SRECs.
Between DC's SREC income, the property-tax exemption, and full net metering, DC has some of the strongest solar economics in the country. See the full breakdown on our DC Solar Incentives guide.
DC Solar Cost FAQ
Most residential systems in DC cost $17,400–$42,000 before incentives, or $2.90–$3.50 per watt installed. A typical 8 kW rowhouse system runs about $23,200–$28,000. DC's SREC income and net metering reduce your effective cost further over the life of the system.
DC combines the most valuable SREC market in the US with full net metering, so DC homeowners earn income from their panels on top of bill savings — among the strongest solar economics in the country. Exact payback depends on your system size and financing; we calculate it for your specific home in a free consultation.
Yes. City Renewables offers $0-down solar loans and a Power Purchase Agreement (PPA) with $0 installation cost and a fixed rate locked for 25 years. Cash purchase delivers the highest lifetime savings and full SREC revenue.
No. Washington, DC exempts solar installations from property tax assessment, so your home value rises without a tax increase.
DC Solar Renewable Energy Certificates are the most valuable in the nation — one SREC is earned per 1,000 kWh generated, and an 8 kW system typically produces 9–10 SRECs per year. At recent market prices that is meaningful annual income on top of electricity savings.
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