BILL · 2025–26 SESSION

SB 5727: Residential energy storage

Incentivizing grid-connected residential battery energy storage systems.

Summary

  • Requires electric utilities with more than 100,000 electric customers to implement a Residential Battery Energy Storage Program (program) that provides battery incentives to customers and a plan to either allow a time-of-use rate or a virtual power plant.
  • Smaller electric utilities may elect to participate in the program.
  • Directs the Washington State University Extension Energy Program to administer the program.
  • Authorizes battery incentives to be paid from July 1, 2026, through June 30, 2036, and allows utilities providing battery incentives under the program to receive a tax credit equal to the incentives provided, associated expenses, and upgrades.
  • Requires the Joint Legislative Audit and Review Committee to review the program's tax preferences as part of its 2030 reviews.

From the Senate Bill Report (SB 5727), written by the Legislature's nonpartisan staff. Read the full report ↗

Did not pass Did not pass · died in committee
  1. IntroducedFeb 11, 2025
  2. Out of committeestopped here
  3. Passed Senate
  4. Passed House
  5. Governor
  6. Law
Prime sponsor
Vandana Slatter (D-48)
Introduced
February 11, 2025 in the Senate
Last action
January 12, 2026
Companion bill
HB 1871
Budget
Has a fiscal note

AN ACT Relating to incentivizing grid-connected residential battery energy storage systems;

Sponsors

Prime sponsor: Vandana Slatter (D-48)

2 co-sponsors (2 Democrats, 0 Republicans)

Votes

No recorded floor votes. This measure never reached a floor vote.

History

  1. By resolution, reintroduced and retained in present status.
  2. First reading, referred to Environment, Energy & Technology.

SB 5727 in other sessions

Bill numbers restart every two years, so the same number is a different bill in each session.

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