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🦅 Washington Solar Panel Calculator 2025

Washington's low hydro rates mean longer payback, but the federal credit significantly helps.

$
$20$800+

Avg rate: $0.109/kWh · 4.5 peak sun hrs/day

Your Solar Estimate for Washington

12.6 kW

System Size

recommended

14.2 yrs

Payback Period

break-even

$40,115

25-Year Savings

net profit

6.4t

CO₂ Offset

per year

Estimated installation cost$36,446
US Federal Tax Credit (30% IRA)− $10,934
Net cost to you$25,512
Annual electricity savings$1,800/yr

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Washington Solar Facts (2025)

$0.109/kWh

Avg Electricity Rate

4.5 hours

Daily Peak Sun Hours

30% Federal Tax Credit (IRA)

Federal Incentive

Net Metering in Washington

Washington offers full net metering — you receive full retail credit for excess solar energy sent back to the grid. This maximizes your savings and shortens your payback period.

Frequently Asked Questions

Is solar worth it in Washington?+
Washington's low hydro rates mean longer payback, but the federal credit significantly helps. With a payback period calculated from local rates of $0.109/kWh and 4.5 peak sun hours per day, solar can be a strong investment in Washington.
What is the solar tax credit in Washington for 2025?+
Washington homeowners qualify for the federal 30% Investment Tax Credit (ITC) under the Inflation Reduction Act, valid through 2032. This means 30% of your total installation cost is deducted directly from your federal tax bill.
How long does solar take to pay back in Washington?+
Payback period in Washington depends on your monthly electricity bill, roof orientation, and system size. Use the calculator above with your actual monthly bill to get a personalized estimate based on local rates of $0.109/kWh.

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