Solar Panels in
Mercer Island, WA

Updated 6/25/2022

How much do solar panels cost in Mercer Island, WA in 2022?

As of July 2022, the average solar panel cost in Mercer Island, WA is $2.77/W. Given a solar panel system size of 5 kilowatts (kW), an average solar installation in Mercer Island, WA ranges in cost from $11,772 to $15,928, with the average gross price for solar in Mercer Island, WA coming in at $13,850. After accounting for the 26% Federal Investment Tax Credit (ITC) and other state and local solar incentives, the net price you'll pay for solar can fall by thousands of dollars.

Importantly, these costs are typical for solar shoppers comparing solar quotes on the EnergySage Marketplace. When you compare quotes for solar panels on EnergySage's competitive solar marketplace, you can expect to see prices up to 20% lower than working with a single solar company.

Average solar panel cost by system size in Mercer Island, WA

System Size System Cost System Cost (after ITC)
3 kW $8,310 $6,149
4 kW $11,080 $8,199
5 kW $13,850 $10,249
6 kW $16,620 $12,299
7 kW $19,390 $14,349
8 kW $22,160 $16,398
9 kW $24,930 $18,448
10 kW $27,700 $20,498

2022 average solar panel cost graph in Mercer Island, WA

for a 5kW system

Great Price
$11,772 or less
Market Average
Above Market
$15,928 or more

Solar installation costs do not include the 26% Federal Investment Tax Credit or local incentives. Learn more about local WA incentives, tax credits & rebates.

Payback Period

15.45 Years

20-Year Savings


Cost per Watt


Top solar installers in Mercer Island, WA

If you are looking for solar companies in WA, here are some popular suggestions:

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