Solar Panel Cost in Falls Church, VA
Estimated costs and savings for ZIP code 22042 — updated for 2026
Urgent tax credit deadlines
- Section 48E phase-out completes December 31, 2027 — the last date to begin construction; grandfathered 2026 starts have until Dec 31, 2030 to be placed in service (421 days left).
Gross Cost
$19,600
7kW system
Annual Savings
$1,759
$147/month
Payback Period
11.1 yrs
Break-even
Peak Sun Hours
4.6
hrs/day avg
Solar System Cost Breakdown — Falls Church, VA
Estimated costs and savings for different residential solar system sizes in ZIP 22042. Costs based on VA average of $2.80/W and utility rate of $0.18/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $11,843 | $1,005 | 11.8 yrs |
| 5 kW | $14,429 | $1,257 | 11.5 yrs |
| 6 kW | $17,014 | $1,508 | 11.3 yrs |
| 7 kW(typical) | $19,600 | $1,759 | 11.1 yrs |
| 8 kW | $22,186 | $2,011 | 11 yrs |
| 10 kW | $27,357 | $2,513 | 10.9 yrs |
Solar Production in Falls Church, Virginia
Average Peak Sun Hours
4.6 hours/day
Good solar resource — solid investment
Est. Annual Production (7kW)
9,990 kWh
Based on 4.6 PSH × 7kW × 365 days × 85% efficiency
Average Utility Rate
$0.18/kWh
Above-average rates — good solar savings potential
Cost Per Watt in VA
$2.80/W
Below national average — competitive market
Solar Panel FAQ — Falls Church, VA
How much do solar panels cost in Falls Church, VA?
A typical 7kW solar system in Falls Church, VA (ZIP 22042) costs approximately $19,600 before any incentives. This works out to about $2.80 per watt installed. Smaller systems start around $11,200, while larger 10kW systems can cost up to $28,000.
How long is the solar payback period in Falls Church?
The average solar payback period in Falls Church, VA is approximately 11.1 years for a 7kW system. With estimated annual savings of $1,759, the system pays for itself and then generates free electricity for the remaining 15-20+ years of its lifespan.
How much can I save with solar panels in 22042?
Homeowners in Falls Church, VA (ZIP 22042) can save approximately $147 per month or $1,759 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $43,975, depending on utility rate increases.
How many peak sun hours does Falls Church get?
Falls Church, VA receives an average of 4.6 peak sun hours per day. This is near the national average, making solar a solid investment in this area.
What size solar system do I need for my home in Falls Church?
The average home in Falls Church, VA needs a 7kW solar system to offset their electricity usage. The exact size depends on your monthly electric bill, roof orientation, and available space. A 7kW system would produce approximately 9,990 kWh annually in ZIP 22042.
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