The bill amends and supplements chapter 19.405 RCW (part of the Clean Energy Transformation Act) by changing definitions, assigning rulemaking and reporting duties, and adding an enforcement provision for affected market customers. It updates RCW 19.405.020 and RCW 19.405.100 and adds a new section to the chapter. The changes clarify and expand definitions (including consumer-owned utility to explicitly include port districts, qualified transmission line, renewable energy credit and thermal REC, renewable hydrogen and renewable natural gas, unspecified electricity, vulnerable populations, and others) and retain May 7, 2019 and January 1, 2019 reference dates for several eligibility and exclusion rules. The bill is primarily procedural and regulatory: it allocates rulemaking authority (the Utilities and Transportation Commission for investor-owned utilities; the department identified in the chapter for consumer-owned utilities), requires the department and commission to adopt consistent reporting requirements (to the extent practicable consistent with chapter 19.29A RCW), and directs the Department of Ecology to adopt rules for energy transformation project investments and the department to adopt rules for measuring and tracking thermal RECs. It requires consumer-owned utilities to report, beginning with the interim performance report due July 1, 2026, the number and details of unspecified electricity contracts longer than 31 days used to serve Washington retail customers, and requires utilities to make required reports available to retail customers. The commission may waive some reporting requirements for affected market customers under narrow conditions and is given explicit authority to enforce compliance by affected market customers on its own motion or when requested. This is a modification of existing law implementing procedural changes (definitions, rulemaking, reporting, and enforcement) rather than the creation of a new criminal offense or new penalties. Some material is missing from the extracted text: the full amended text of RCW 19.405.100, the complete new section added to chapter 19.405 beyond the enforcement authority statement, and the portion of the definitions that was cut off, so a complete account of all substantive changes in the bill cannot be confirmed from the excerpts provided.

If enacted, the bill will make utilities and large electricity buyers more transparent and accountable by adding new reporting and rulemaking duties: consumer-owned utilities must start reporting details about any unspecified electricity contracts longer than 31 days in their interim performance report beginning July 1, 2026; investor-owned utilities must submit required compliance information to the utilities commission; and the utilities must make these reports available to retail customers. The utilities commission gains clear authority to enforce the rules against affected market customers, while the department of ecology and the department responsible for consumer-owned utilities must write rules for energy transformation investments and for tracking thermal and other renewable energy credits. The groups most affected are consumer-owned utilities, investor-owned utilities, and affected market customers, plus state agencies that must adopt and enforce rules; they can expect added administrative work and likely new tracking and reporting costs, and affected market customers face a greater risk of enforcement unless they qualify for a reporting waiver (for exclusively nonemitting or eligible renewable procurement or de minimis fossil-fuel backup). Important details are missing from the provided text—notably the full amended language of RCW 19.405.100, the new section added to the chapter, and which specific agency is meant by “the department”—so the exact scope, timing, and potential financial impacts cannot be fully determined from these excerpts.