State Overview

Washington, DC

National Solar Capacity Ranking: 46th

Updated May 2026

 

Washington, DC Solar Overview

 

 

 

Washington, DC Major Solar and Storage Projects

SEIA’s Major Solar 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

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Just The Facts

  • Solar Capacity:

    343 MWdc

  • National Solar Ranking:

    46th (43rd in 2025 additions)

  • Enough Solar Installed to Power:

    57,931 homes

  • Percentage of State's Electricity from Solar:

    72.85%

  • Solar Jobs:

    1,093

  • Solar and Storage Companies in State:

    176 (6 Manufacturers, 21 Installers/Developers, 149 Others)

  • Total Solar Investment in State:

    $935 million

  • Growth Projection and Ranking:

    249 MW over the next 5 years (ranks 48th)

  • Number of Solar Installations:

    20,461

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Washington, DC Solar Policy Resources

Washington, DC Energy Storage Policy and Market Overview

The District of Columbia has a limited toolkit for advancing microgrids and energy storage deployment. The city has prioritized thoughtful decision-making regarding storage interconnection regulations, equitable incentive programs, and reducing market barriers.

DC published key regulatory guidance detailing interconnection rules for Small Generation Facilities (DC Municipal Regulations Chapter 40). Despite these inclusive regulations, the city currently funds only one demonstration program for energy storage.

In 2023, DC launched the Energy Storage Grant Program, and since has funded two rounds of programming. With its available resources, the city is widening its toolkit to facilitate the growth of storage resources and promote a competitive market. Grant funding, federal tax credits, and favorable interconnection rules are driving Washington, DC’s storage deployment.

Washington, DC Energy Storage Policy Resources

  • DC Energy Storage Grant ProgramGrant funding for commercial, and multi-residential property BESS.
  • Energy Storage Cost in DCUp-to-date storage and solar-plus-storage pricing and find installers in Washington, DC on EnergySage.
  • DSIRE DC Energy Storage Policy Database – Clearinghouse of financial incentives, regulations, and rebates for energy storage and lithium-ion technologies in Washington, DC and across the United States.
  • Council of the District of Columbia– Pending, passed, and historical legislation affecting storage and battery energy resources, locate and contact individual legislators, and stay up to date on current legislative issues in Washington, DC.
  • Washington DC Public Utilities Commission– Governing body regulating electricity rates and services of Washington, DC public utilities, search for regulatory dockets, programs, and initiatives.
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