Solar Panel Savings in Washington, DC
Calculate how much you can save with solar panels in Washington, District of Columbia. Based on 4.6 peak sun hours/day and 13.6¢/kWh average electricity rate.
4.6
Peak Sun Hours/Day
13.6¢
Avg Rate (¢/kWh)
11.1 yr
Payback Period
$15k
25-Year Savings
Washington Solar Overview
Calculate Your Washington Solar Savings
Washington average: $129/mo
South-facing roofs produce the most energy
Add $8,000-$12,000 for whole-home battery backup
Annual Production
kWh/year
Annual Savings
per year
Net System Cost
after 30% ITC
Payback Period
break-even time
25-Year Total Savings
$37,369
Monthly Savings
$91
Federal Tax Credit
$5,220
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Washington | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $17,400 | $17,100 |
| Federal Tax Credit (30%) | -$5,220 | -$5,130 |
| Net System Cost | $12,180 | $11,970 |
| Cost Per Watt | $2.90/W | $2.85/W |
Solar Potential in Washington
Sun Hours vs National Average
Washington gets 2% more sun than the national average.
Climate Advantages
- 199 sunny days per year
- Average temperature: 44.7°F — cooler temps actually improve panel efficiency
- Average roof size: 1,961 sq ft — enough for a 108-panel system
Washington Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $17,400 system, that's a $5,220 credit. Valid through 2032.
District of Columbia State Incentives
DC SREC program at $350-$400/MWh; property tax exemption; federal 30% ITC.
Net Metering — Pepco (Potomac Electric)
Pepco (Potomac Electric) offers net metering in Washington. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Washington
3.4
Tons CO2 Offset/Year
55
Equivalent Trees Planted
0.8
Homes Worth of Energy
Based on 8,059 kWh annual production with a 6kW system. EPA average: 0.417 metric tons CO2 per MWh, 10,632 kWh per US home.
Solar Energy in Washington, District of Columbia
Washington, District of Columbia receives an average of 4.6 peak sun hours per day, providing excellent conditions for residential solar installations. With electricity rates averaging 13.6¢ per kWh from Pepco (Potomac Electric), below the national average, but with rates rising 2-3% annually, the long-term savings are still meaningful.
A typical 6kW solar system in Washington produces approximately 8,059 kWh per year, saving homeowners an estimated $1,094 annually. The system pays for itself in about 11.1 years, after which you enjoy essentially free electricity for the remaining 14+ years of the system's warranty life.
Washington has a solar penetration rate of 7.2% — showing growing adoption of residential solar, with significant room for expansion. The cost of living index of 157 (national average: 100) means higher electricity costs, which amplifies solar savings.
Frequently Asked Questions
How much do solar panels cost in Washington, DC?
The average cost of a 6kW solar panel system in Washington is approximately $17,400 before incentives ($2.90/watt). After the 30% federal Investment Tax Credit, the net cost is about $12,180. DC SREC program at $350-$400/MWh; property tax exemption; federal 30% ITC.
How many peak sun hours does Washington get?
Washington, DC receives an average of 4.6 peak sun hours per day and approximately 199 sunny days per year. This is near the national average, providing good conditions for residential solar panels.
What is the solar payback period in Washington?
The average solar payback period in Washington is approximately 11.1 years. After payback, your solar panels generate essentially free electricity for the remaining 15-20 years of their warranty. Over 25 years, total savings can reach $15,170.
Does Washington have net metering?
Yes, Washington has access to net metering through Pepco (Potomac Electric). This allows you to earn credits for excess solar energy sent to the grid, significantly improving your solar investment returns.
Is solar worth it in Washington, DC?
Yes, solar is a solid investment in Washington. While the 11.1-year payback is moderate, you'll still save $15,170 over 25 years. The 30% federal tax credit and local incentives help make solar financially attractive.