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Storage in
Mercer Island, WA

Updated 3/19/2023

How much do storage systems cost in Mercer Island, WA in 2023?

As of March 2023, the average storage system cost in Mercer Island, WA is $1398/kWh. Given a storage system size of 13 kWh, an average storage installation in Mercer Island, WA ranges in cost from $15,448 to $20,900, with the average gross price for storage in Mercer Island, WA coming in at $18,174. After accounting for the 30% 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 Mercer Island, WA

System Size System Cost System Cost (after ITC)
10 kWh $13,980 $10,345
13 kWh $18,174 $13,449
20 kWh $27,960 $20,690
26 kWh $36,348 $26,898
Note: you can't claim the federal tax credit without installing solar panels alongside a battery system.

2023 average solar + storage cost in Mercer Island, WA

$23,160 - $66,948

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 Mercer Island, WA

Enphase Energy IQ 10 Extended…
Enphase Energy IQ 3
SolarEdge Technologies BAT-10…
LG Energy Solution Resu Prime…
Kohler Power Reserve 10 KW DC

Top storage system installers in Mercer Island, WA

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