Solar Panels in 99401 Clarkston, WA
99401 Clarkston receives 4.4 hrs of peak sun daily. A 6kW system saves $892/year with a 14.6-year payback.
Peak Sun Hours
4.4 hrs
per day
6kW System Cost
$18,600
before incentives
Annual Savings
$892
per year
Annual Production
7,920
kWh/year
Payback Period
14.6 years
estimated
CO2 Offset
4.7 tons
per year
Solar Cost Breakdown for 99401
| Item | Amount |
|---|---|
| 6kW System Cost | $18,600 |
| Federal Tax Credit (30%) | -$5,580 |
| Net Cost (after federal credit) | $13,020 |
| Annual Savings | $892/yr |
| 20-Year Net Savings | $4,820 |
Other ZIP Codes in Washington
Frequently Asked Questions
How much do solar panels cost in 99401 Clarkston?
A 6kW solar system in 99401 Clarkston costs approximately $18,600 before the 30% federal tax credit. After the credit, net cost is approximately $13,020.
How much will I save with solar in 99401?
Homeowners in 99401 can save approximately $892 per year with a 6kW system, producing 7,920 kWh annually. Over 20 years, total savings are approximately $4,820.
How much sun does 99401 Clarkston get?
99401 Clarkston averages 4.4 peak sun hours per day, which determines solar panel output. A 6kW system here produces approximately 7,920 kWh per year.
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Data verified March 2026 · Source: NREL, DSIRE, EIA