Solar Panel Cost in District of Columbia (2026)
Installed solar in District of Columbia runs about $3.00 per watt — roughly 16% above the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.16/kWh power price and 4.4 daily peak sun hours.
Worked example: a typical $150/month home in District of Columbia
A $150/month electric bill in District of Columbia works out to about 11,250 kWh a year. Sizing a cash-purchase system to cover 100% of that:
System size
8.8 kW
Panels
22
Annual offset
100%
Gross cost
$28,900
Federal credit (25D)
$0
Expired 12/31/2025 — $0
State incentive
$0
Net cost
$28,900
Payback
13.3 yr
25-year savings
$36,903
Last updated June 30, 2026
District of Columbia solar numbers
- Installed price
- $3.00 / watt
- Electricity price
- $0.16 / kWh
- Peak sun hours
- 4.4 hrs/day
- State incentive
- 0%
- Net-metering value
- 100% of retail
Local context: DC's SREC prices are among the highest in the country, dramatically boosting solar returns.
Estimate your own District of Columbia system
Adjust the bill, ownership, and battery options below — it's pre-set to District of Columbia's pricing and sun hours.
Estimated system cost
$34,539–$44,861
12.4 kW31 panels
Low $35kMost likely ~$39,700High $45k
Federal tax credit
— expired Dec 2025, we won't pretend otherwise
$0
State & utility incentives
$0
Est. annual savings
$2,549
Payback period
~13.0 yr
Net cost
$35k–$45k
25-year net savings
+$53,023
iA ballpark estimate for planning — not a final quote.
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