Official Text and Analysis.

Modifies state greenhouse gas emissions reduction targets, moving from 25 percent below 1990 levels to 40 percent below 1990 levels by 2035, and from 50 percent below 1990 levels to 80 percent below 1990 levels by 2050.

Modifies state greenhouse gas emissions reduction targets, moving from 25 percent below 1990 levels to 40 percent below 1990 levels by 2035, from 50 percent below 1990 levels to 80 percent below 1990 levels by 2050, and adding a target of 19 percent below 1990 levels by 2025.

Directs the Department of Commerce (Commerce) to submit to the Legislature by July 1, 2018 a report that examines the relationship between increased use of hydroelectric power in the state and the corresponding reduction in use of fossil-fuel based energy sources in the state, and that makes recommendations on ways in which to incentivize the increased use of hydroelectric power in the state in order to reduce the state's greenhouse gas emissions. Provides that the state's greenhouse gas emissions reductions shall be advisory only, and not binding, unless the state enacts into law by December 31, 2019 all of the recommendations made in the Commerce report.

Sets state greenhouse gas emission limits for 2020, 2025, 2035, and 2050 on a per capita basis relative to 1990 emission levels, rather than based on overall 1990 emission levels.

Prevents greenhouse gas emissions reductions specified in the act from taking effect if the United States is not a signatory to the 2015 Paris climate agreement.

Prevents the Department of Ecology and the Attorney General of Washington from spending any funds out of an account maintained by the Office of the State Treasurer for the purpose of implementing or defending a state law regarding greenhouse gas emissions reductions that is inconsistent with federal law.

Limits the scope of greenhouse gas emissions that the State of Washington is directed to reduce, to sources physically located inside the state.

Provides that Washington's obligation to reduce greenhouse gas emissions applies only upon a determination by the Climate Impacts Group at the University of Washington that, after taking into account both the anthropogenic and non-anthropogenic greenhouse gas emissions within Washington, the proposed reductions can have a statistically significant impact on the global temperature.

Changes the benchmark year against which the State of Washington is directed to reduce future greenhouse gas emissions, from 1990 to 2006. Removes references to the 2015 Paris climate agreement.

Requires the Joint Legislative Audit and Review Committee to prepare and submit to the Legislature by June 30, 2019 andevery five years thereafter, an analysis of the economic impact, whether positive or negative, and the impact on jobs, whether positive or negative, resulting from the greenhouse gas emissions reductions specified in the act.