The Washington State Building Code Council has filed an emergency rule pertaining to energy storage systems regulated under WAC 51-54A-1201 and WAC 51-54A-8000 in WSR 23-11-148. This emergency rule was in effect from May 24, 2023, through June 30, 2023, and was refiled and extended for another 120 days on July 1, 2023 (WSR 23-14-094). Due to the revised effective date for all 2021 codes (March 15, 2024), the emergency rule will be refiled again and will be effective until March 14, 2024.