Public comment period
Battery Energy Storage Systems Scoping Document available for review
Sept. 1, 2026, 12 p.m. - Oct. 1, 2026, 11:59 p.m. PT
We are seeking public input to help us determine what to study in the Battery Energy Storage System Facilities Programmatic Environmental Impact Statement.
Background
We are starting work on a statewide study of battery energy storage systems. The study will look at potential negative environmental impacts and ways to avoid, reduce and mitigate impacts.
Battery energy storage systems, or ‘BESS’, use large, rechargeable batteries to store energy. They release power when people need more electricity or when power generation decreases. They can also provide backup power during outages and help strengthen the state’s electrical grid.
The scoping document explains the study process and gives a general overview of battery energy storage. Learn more on our battery energy storage webpage.
Comment online
- Use our online comment form
Comment by mail
Department of Ecology
P.O. Box 47709
Olympia, WA 98504-7709
Questions
To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.