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Washington Supreme Court Invalidates Voter-Approved Natural Gas Initiative

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In Short: The Washington Supreme Court has struck down Initiative 2066, which sought to protect access to natural gas, ruling it violated the state Constitution by combining multiple subjects.

The Washington Supreme Court has struck down Initiative 2066, which sought to protect access to natural gas, ruling it violated the state Constitution by combining multiple subjects into a single initiative.

In a 6-3 decision Thursday, the court identified four separate subjects within the initiative: protecting access to natural gas, restricting local air-quality authorities, changing statewide building-code requirements, and repealing the severability provision of the state’s Decarbonization Act.

Initiative 2066, approved by 51% of voters in November 2024, aimed to block regulators from approving utility rate plans that ended or restricted natural gas service, and removed several zero-emission goals from state law.

The court’s majority opinion, written by Justice Mary McFarland Stephens, stated, “Article II, section 19 forbids combining separate subjects in a single bill or initiative, requiring instead that distinct subjects be enacted separately to protect against unconstitutional logrolling and to ensure transparency in the legislative process.”

Justice Charles Wiggins Mungia, in his dissent, argued that the initiative’s various provisions were rationally connected to the goal of protecting consumers’ access to natural gas.

Mungia wrote, “Although, as members of the judiciary, we at times may not agree with the policies behind an initiative, it is our job to maintain and uphold the law.” He contended that the unconstitutional portions could be severed, allowing the initiative to remain valid.

The Building Industry Association of Washington drafted the initiative and partnered with Let’s Go Washington, a conservative political committee, to collect the necessary signatures.

The initiative was challenged in court by Climate Solutions, Front and Centered, Washington Conservation Action, the City of Seattle, and King County, who argued it violated the state’s single-subject rule.

In his dissent, Mungia said the central purpose of I-2066 was protecting Washingtonians’ access to natural gas, and that the initiative’s various provisions were rationally connected to that goal.

The court did not rule on every constitutional challenge raised against the initiative, leaving some questions unresolved.

The decision highlights the ongoing tension between voter initiatives and constitutional requirements, particularly in the context of environmental and energy policy.

Initiative 2066 would have rolled back changes to the state energy code that give builders permitting incentives for installing electric heat pumps instead of natural gas furnaces, and repealed portions of a 2024 state law designed to accelerate Puget Sound Energy’s transition away from natural gas.

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