State Overview

Washington

National Solar Capacity Ranking: 40th

Updated June 2026

 

Washington State Solar Overview

 

 

Washington Major Solar and Storage Projects

SEIA’s Major Solar and Storage Projects List is a database of all U.S. ground-mounted solar projects, 1 MW and above, that are either operating, under construction or under development.

 


 

Official SEIA State Affiliate

 

 

Just The Facts

  • Solar Installed (MW):

    955 MWdc

  • Storage Capacity

    4 MWh

  • National Ranking:

    40th (40th in 2025 additions)

  • Enough Solar Installed to Power:

    103,115 homes

  • Percentage of State's Electricity from Solar:

    1.25%

  • Solar Jobs:

    1,093

  • Solar Companies in State:

    149 (33 Manufacturers, 57 Installers/Developers, 59 Others)

  • Total Solar Investment in State:

    $2.3 billion

  • Growth Projection and Ranking:

    2,119 MW over the next 5 years (ranks 33rd)

  • Number of Installations:

    60,227

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Washington State Solar Policy Resources

 

Washington Energy Storage Policy and Market Overview

Washington’s energy storage market is in its early stage. As solar capacity and investment continue to increase, energy storage is expected to play a larger role in supporting grid reliability and enabling future clean energy growth.
 

 

Washington State Energy Storage Policy Resources

 

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