Solar cost & payback in District of Columbia
Short answer
In District of Columbia, a home with a $150/month electric bill needs about a 8.7 kW solar system — roughly $18,256 after the 30% federal tax credit, saving about $1,801/year and paying back in ~10.1 years.
System size
8.7 kW
Cost after 30% credit
$18,256
Payback
10.1 yrs
20-yr net savings
$27,750
Solar in District of Columbia
District of Columbia averages about 4.3 peak sun hours a day and pays roughly 16.5¢/kWh. The figures above assume a $150/month bill and ~$3/watt installed, with the 30% federal tax credit. A bigger bill needs a bigger system; shading, roof orientation, and net-metering rules change the payback.
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Frequently asked questions
How much do solar panels cost in District of Columbia?
For a $150/month bill, about a 8.7 kW system — roughly $26,079 before incentives, or $18,256 after the 30% federal tax credit. Larger bills need bigger, pricier systems.
Is solar worth it in District of Columbia?
District of Columbia gets about 4.3 peak sun hours a day and pays ~16.5¢/kWh. A typical system pays back in ~10.1 years and saves about $27,750 net over 20 years — a longer payback, so run your own numbers.
What is the solar tax credit in District of Columbia?
The 30% federal Residential Clean Energy Credit applies everywhere, including District of Columbia — about $7,824 on the example system. District of Columbia may add its own state incentives on top; check current programs.