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Storage cost in
Washington

Updated 6/25/2022

How much do storage systems cost in Washington in 2022?

As of August 2022, the average storage system cost in Washington is $1374/kWh. Given a storage system size of 13 kWh, an average storage installation in Washington ranges in cost from $15,183 to $20,541, with the average gross price for storage in Washington coming in at $17,862. After accounting for the 26% Federal Investment Tax Credit (ITC) and other state and local storage incentives, the net price you'll pay for solar can fall by thousands of dollars.

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

Average storage system cost by system size in Washington

System Size System Cost System Cost (after ITC)
10 kWh $13,740 $10,168
13 kWh $17,862 $13,218
20 kWh $27,480 $20,335
26 kWh $35,724 $26,436
Note: you can't claim the federal tax credit without installing solar panels alongside a battery system.

2022 average solar + storage cost in Washington

$22,860 - $66,124

There are several variables that impact the price you pay for a solar + storage system: the quality of the equipment you install, the type of inverters you choose, and the storage capacity and chemistry of your battery. This is an average price range for solar + storage installations in your area, and the specifics of your project will change the final price you pay.

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Top 5 quoted battery models in Washington

Enphase Energy IQ 10
SolarEdge Technologies BAT-10…
LG Energy Solution Resu Prime…
Homegrid Energy Stack'd Serie…
LG Energy Solution Resu Prime…

Top storage system installers in Washington

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