How much do solar panels cost in 20007?

A standard 6kW residential solar system in 20007 (Washington, DC) costs approximately $17,400 before incentives. After the 30% federal Investment Tax Credit, the net cost is $12,180.

How much will I save with solar panels in 20007?

Homeowners in 20007 can expect to save approximately $1,082 per year on electricity bills with a 6kW solar system, for a total of around $27,050 over 25 years.

How long is the payback period for solar in 20007?

The estimated payback period for a 6kW solar installation in 20007 is 11.3 years after the federal tax credit. This is based on 4.41 kWh/m²/day average solar irradiance and local electricity rates of $0.14/kWh.

Solar Panel Cost in 20007

Last updated April 14, 2026 · Source: NREL and SEIA

Washington, DC · Moderate ROI

Payback 11.3 years

6kW System Cost Breakdown

Gross Installation Cost $17,400 $2.9/W installed

Federal Tax Credit (30%) −$5,220 ITC through 2032

Net Cost After Credit $12,180 Your out-of-pocket cost

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Savings & ROI for 20007

Annual Electricity Savings $1,082 At $0.14/kWh local rate

Annual Solar Production 7,730 kWh 4.41 kWh/m²/day irradiance

Break-Even Point 11.3 years Moderate ROI

25-Year Net Savings +$14,870 After total system cost

Solar Loan Calculator

Financing a 6kW solar system in Washington? Estimate your monthly payment and total interest below.

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Assumes fixed-rate loan. Actual rates vary by lender and credit score. Solar-specific loans from Mosaic, GoodLeap, or Sunlight often offer lower rates than personal loans.

Solar Resource in Washington

Washington (20007) receives an average of 4.41 kWh/m²/day of solar irradiance, based on latitude 38.912°N and DC regional weather patterns from NREL data. At the local electricity rate of $0.14/kWh, a 6kW system generates roughly $1,082 per year in bill savings.

Solar irradiance vs. US average (4.5 kWh/m²/day)

07.5 kWh/m²/day

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Nearby Zip Codes in Washington

20001 Washington, DC 11.3 yr payback $1,082/yr savings 20002 Washington, DC 11.3 yr payback $1,082/yr savings 20003 Washington, DC 11.3 yr payback $1,082/yr savings 20009 Washington, DC 11.3 yr payback $1,082/yr savings

How We Calculate Solar Costs for 20007

Costs are based on the average price per watt for DC ($2.9/W), applied to a standard 6kW residential system. Solar irradiance is derived from NREL PVWatts data for latitude 38.912°N, adjusted for local weather patterns. Electricity rate uses the DC EIA average of $0.14/kWh.

The 30% federal Investment Tax Credit (ITC) applies as a credit against your federal income tax liability. Many states offer additional credits; check your state's energy office for local incentives.