Solar Panels in
Franklin County, WA

Updated 12/4/2021

How much do solar panels cost in Franklin County, WA in 2021?

As of December 2021, the average solar panel cost in Franklin County, WA is $2.52/W. Given a solar panel system size of 5 kilowatts (kW), an average solar installation in Franklin County, WA ranges in cost from $10,710 to $14,490, with the average gross price for solar in Franklin County, WA coming in at $12,600. 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 Franklin County, WA

System Size System Cost System Cost (after ITC)
3 kW $7,560 $5,594
4 kW $10,080 $7,459
5 kW $12,600 $9,324
6 kW $15,120 $11,189
7 kW $17,640 $13,054
8 kW $20,160 $14,918
9 kW $22,680 $16,783
10 kW $25,200 $18,648

2021 average solar panel cost graph in Franklin County, WA

for a 5kW system

Great Price
$10,710 or less
Market Average
Above Market
$14,490 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

13.57 Years

20-Year Savings


Cost per Watt


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