Jefferson County, WA solar installation & market data
Updated May 17, 2019Older data · growth withheldProvisional score · under 500 installs By The SolarDNA Data Team
Jefferson County has 102 solar installations across 7 zip codes at a median installed cost of $4.00/W, recent growth not yet measurable, and an installs-weighted Market Score of 41.
Active installations
102
Zip markets
7
Median cost
$4.00/W
12-mo growth
—
Installers active
0
County Market Score
Good · installs-weighted across 7 zips
Best zip in Jefferson County scores higher than 71% of U.S. zip markets.
Versus Washington
How Jefferson County compares with the state
Installed cost
$0.54/W above
state median $3.45/W
Market score
41 vs 39
Washington scores 39
Share of state installs
1.37%
of 7.4K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▼ 13.4%
residential solar added in Washington, 12 months through Jul 2026
Statewide market
61.6K systems
3.1% of homes · utility-reported through Jul 2026
Growth & pricing
Jefferson County by year
56 installs in the trailing twelve months vs 40 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Jefferson County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|