Estimate savings
Solar by state

Solar in Washington

Across Washington, homeowners pay about 8.2¢/kWh and a typical 6 kW system pays back in roughly 23.6 years after the 30% federal tax credit.

State avg rate 8.2¢/kWh
Typical payback 23.6yrs
Best Solar Value Low

Counties in Washington

Kittitas County
10.1¢/kWh · 8,118 kWh/yr
$816/yr 15.4 yr payback
Walla Walla County
9.5¢/kWh · 8,034 kWh/yr
$763/yr 16.5 yr payback
Klickitat County
8.7¢/kWh · 8,442 kWh/yr
$737/yr 17.1 yr payback
San Juan County
10.3¢/kWh · 7,068 kWh/yr
$731/yr 17.2 yr payback
Asotin County
9.6¢/kWh · 7,632 kWh/yr
$730/yr 17.3 yr payback
Ferry County
9.4¢/kWh · 7,410 kWh/yr
$694/yr 18.2 yr payback
Yakima County
8.2¢/kWh · 8,406 kWh/yr
$692/yr 18.2 yr payback
Franklin County
8.3¢/kWh · 8,262 kWh/yr
$687/yr 18.3 yr payback
Garfield County
8.2¢/kWh · 8,124 kWh/yr
$669/yr 18.8 yr payback
Benton County
7.8¢/kWh · 8,436 kWh/yr
$662/yr 19 yr payback
Columbia County
8.2¢/kWh · 8,034 kWh/yr
$661/yr 19.1 yr payback
Kitsap County
10.4¢/kWh · 6,336 kWh/yr
$656/yr 19.2 yr payback
Thurston County
10.4¢/kWh · 6,306 kWh/yr
$653/yr 19.3 yr payback
Island County
10.4¢/kWh · 6,258 kWh/yr
$648/yr 19.4 yr payback
Lincoln County
8.0¢/kWh · 8,124 kWh/yr
$648/yr 19.4 yr payback
Whatcom County
10.4¢/kWh · 6,198 kWh/yr
$642/yr 19.6 yr payback
Adams County
7.6¢/kWh · 8,190 kWh/yr
$627/yr 20.1 yr payback
Whitman County
8.0¢/kWh · 7,860 kWh/yr
$627/yr 20.1 yr payback
Skagit County
10.4¢/kWh · 6,012 kWh/yr
$623/yr 20.2 yr payback
King County
10.4¢/kWh · 5,916 kWh/yr
$613/yr 20.6 yr payback
Stevens County
8.7¢/kWh · 6,918 kWh/yr
$600/yr 21 yr payback
Jefferson County
8.5¢/kWh · 6,930 kWh/yr
$591/yr 21.3 yr payback
Mason County
8.9¢/kWh · 6,534 kWh/yr
$582/yr 21.6 yr payback
Clark County
9.2¢/kWh · 6,228 kWh/yr
$572/yr 22 yr payback
Pierce County
8.5¢/kWh · 6,216 kWh/yr
$530/yr 23.8 yr payback
Clallam County
8.1¢/kWh · 6,456 kWh/yr
$522/yr 24.1 yr payback
Grays Harbor County
8.6¢/kWh · 6,054 kWh/yr
$518/yr 24.3 yr payback
Skamania County
7.4¢/kWh · 7,020 kWh/yr
$517/yr 24.4 yr payback
Snohomish County
8.4¢/kWh · 5,970 kWh/yr
$504/yr 25 yr payback
Wahkiakum County
8.3¢/kWh · 6,060 kWh/yr
$501/yr 25.1 yr payback
Okanogan County
6.5¢/kWh · 7,452 kWh/yr
$485/yr 26 yr payback
Pacific County
7.7¢/kWh · 6,030 kWh/yr
$466/yr 27 yr payback
Cowlitz County
7.3¢/kWh · 6,270 kWh/yr
$457/yr 27.6 yr payback
Spokane County
5.7¢/kWh · 7,590 kWh/yr
$433/yr 29.1 yr payback
Pend Oreille County
6.1¢/kWh · 6,822 kWh/yr
$418/yr 30.1 yr payback
Grant County
4.9¢/kWh · 8,250 kWh/yr
$400/yr 31.5 yr payback
Lewis County
6.3¢/kWh · 6,084 kWh/yr
$386/yr 32.6 yr payback
Chelan County
3.2¢/kWh · 7,656 kWh/yr
$247/yr 51 yr payback
Douglas County
2.6¢/kWh · 8,202 kWh/yr
$217/yr 58.1 yr payback
Figures are modeled estimates from NREL PVWatts v8 + EIA. Not affiliated with NREL, DOE or EIA · not financial advice. Last updated June 2026.