Solar Calculators for Seattle, Washington
Free tools pre-loaded with Seattle sun hours, electricity rates, and Washington net metering policy.
Peak sun hours
3.5
hrs/day annual avg
Avg electricity rate
10.0¢
per kWh (Seattle City Light / PSE)
Typical install cost
$2.85/W
Washington median (2026)
Typical 8 kW system in Seattle
Annual production
10,220 kWh
Year-1 savings
$1,022
System cost (est.)
$22,800
Simple payback
~22 yrs
Estimates based on 3.5 peak sun hours, 10.0¢/kWh, and $2.85/W installed cost. No federal tax credit (Section 25D expired Dec 31, 2025).
Run the numbers for Seattle
Size my system
kW needed from your bill
Pre-filled for Seattle →Savings calculator
25-year savings & ROI
Pre-filled for Seattle →Payback period
Break-even analysis
Pre-filled for Seattle →Solar potential
Address-based production
Pre-filled for Seattle →TOU optimizer
Model peak/off-peak rates
Pre-filled for Seattle →Quote checker
Is my quote a fair price?
Pre-filled for Seattle →Washington solar incentives
Available to Seattle homeowners. Note: the federal Section 25D residential solar credit expired December 31, 2025.
Check all Washington incentives
Find Washington incentives →