Solar installations in Washington
6,327 recorded installations — prices, growth by year, county breakdown and the installers doing the work.
Dataset updated . Refreshed from LBNL's Tracking the Sun public releases.
Most active
Top installers in Washington
| # | Installer | Installs in WA |
|---|
Growth
Installations by year
Bars: recorded installs · right column: median $/W that year.
By county
Solar by county in Washington
| County | Installs | Capacity | Median $/W |
|---|---|---|---|
| King County | 1,424 | 13.6 MW | $3.42/W |
| Clark County | 537 | 4.9 MW | $3.58/W |
| Snohomish County | 483 | 5.4 MW | $3.30/W |
| Benton County | 457 | 5.1 MW | $3.70/W |
| Spokane County | 447 | 3.7 MW | $4.11/W |
| Pierce County | 397 | 3.4 MW | $3.61/W |
| Whatcom County | 389 | 3.4 MW | $2.97/W |
| Yakima County | 327 | 4.8 MW | $2.82/W |
| Kittitas County | 228 | 3.1 MW | $2.61/W |
| Franklin County | 187 | 1.9 MW | $3.69/W |
| Thurston County | 157 | 1.5 MW | $3.54/W |
| Skagit County | 146 | 1.9 MW | $3.00/W |
| Kitsap County | 137 | 1.2 MW | $3.80/W |
| Walla Walla County | 120 | 1.2 MW | $3.92/W |
| Clallam County | 105 | 905 kW | $4.36/W |
| Jefferson County | 102 | 1.1 MW | $3.97/W |
| Cowlitz County | 99 | 926 kW | $3.77/W |
| Island County | 85 | 833 kW | $3.07/W |
| Lewis County | 78 | 695 kW | $3.74/W |
| San Juan County | 62 | 600 kW | $3.04/W |
| Mason County | 42 | 510 kW | $3.68/W |
| Okanogan County | 41 | 321 kW | $3.90/W |
| Skamania County | 38 | 327 kW | $3.44/W |
| Grays Harbor County | 31 | 269 kW | $3.88/W |
| Stevens County | 29 | 320 kW | $3.28/W |
| Klickitat County | 28 | 234 kW | $3.32/W |
| Grant County | 25 | 304 kW | $4.30/W |
| Whitman County | 24 | 382 kW | $3.99/W |
| Pacific County | 18 | 178 kW | $3.64/W |
| Ferry County | 17 | 251 kW | $4.09/W |
| Lincoln County | 14 | 126 kW | $4.26/W |
| Adams County | 10 | 27.9 MW | $3.88/W |
Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties with fewer than 50 recorded installs are shown but not indexed.
Frequently asked questions
How many solar installations are there in Washington?
LBNL's Tracking the Sun dataset records 6,327 residential and small-commercial solar installations in Washington, totalling 91.8 MW of capacity. (Coverage depends on the state's reporting programs, so actual totals are higher.)
How much does solar cost per watt in Washington?
The median installed price across priced systems in Washington is $3.48/W pre-incentive. Year-by-year medians are shown on this page.
Who are the biggest solar installers in Washington?
No resolved installers recorded.