Solar Panel Savings in Fairfax, VA
Calculate how much you can save with solar panels in Fairfax, Virginia. Based on 4.2 peak sun hours/day and 12.8¢/kWh average electricity rate.
4.2
Peak Sun Hours/Day
12.8¢
Avg Rate (¢/kWh)
13 yr
Payback Period
$32k
25-Year Savings
Fairfax Solar Overview
Calculate Your Fairfax Solar Savings
Fairfax average: $116/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
$32,313
Monthly Savings
$79
Federal Tax Credit
$5,130
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Fairfax | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $17,100 | $17,100 |
| Federal Tax Credit (30%) | -$5,130 | -$5,130 |
| Net System Cost | $11,970 | $11,970 |
| Cost Per Watt | $2.85/W | $2.85/W |
Solar Potential in Fairfax
Sun Hours vs National Average
Fairfax gets 7% less sun than the national average, but high-efficiency panels compensate.
Climate Advantages
- 205 sunny days per year
- Average temperature: 59°F — cooler temps actually improve panel efficiency
- Average roof size: 1,839 sq ft — enough for a 102-panel system
Fairfax Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $17,100 system, that's a $5,130 credit. Valid through 2032.
Virginia State Incentives
Net metering; sales tax exemption.
Net Metering — Dominion Energy
Dominion Energy offers net metering in Fairfax. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Fairfax
3.1
Tons CO2 Offset/Year
51
Equivalent Trees Planted
0.7
Homes Worth of Energy
Based on 7,358 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 Fairfax, Virginia
Fairfax, Virginia receives an average of 4.2 peak sun hours per day, offering adequate solar resources for homeowners looking to reduce their electricity bills. With electricity rates averaging 12.8¢ per kWh from Dominion Energy, below the national average, but with rates rising 2-3% annually, the long-term savings are still meaningful.
A typical 6kW solar system in Fairfax produces approximately 7,358 kWh per year, saving homeowners an estimated $946 annually. The system pays for itself in about 12.7 years, after which you enjoy essentially free electricity for the remaining 12+ years of the system's warranty life.
Fairfax has a solar penetration rate of 6.5% — showing growing adoption of residential solar, with significant room for expansion. The cost of living index of 94.8 (national average: 100) reflects a lower cost of living, keeping installation costs competitive.
Other Cities in Virginia
Alexandria, VA
Chesapeake, VA
Hampton, VA
Lynchburg, VA
Newport News, VA
Norfolk, VA
Richmond, VA
Roanoke, VA
Virginia Beach, VA
Frequently Asked Questions
How much do solar panels cost in Fairfax, VA?
The average cost of a 6kW solar panel system in Fairfax is approximately $17,100 before incentives ($2.85/watt). After the 30% federal Investment Tax Credit, the net cost is about $11,970. Net metering; sales tax exemption.
How many peak sun hours does Fairfax get?
Fairfax, VA receives an average of 4.2 peak sun hours per day and approximately 205 sunny days per year. This is near the national average, providing good conditions for residential solar panels.
What is the solar payback period in Fairfax?
The average solar payback period in Fairfax is approximately 13 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 $32,313.
Does Fairfax have net metering?
Yes, Fairfax has access to net metering through Dominion Energy. 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 Fairfax, VA?
Yes, solar is a solid investment in Fairfax. While the 13-year payback is moderate, you'll still save $32,313 over 25 years. The 30% federal tax credit and local incentives help make solar financially attractive.