Initiative 2066, which seeks to protect natural gas usage in Washington, has sparked significant legal challenges questioning its constitutionality. Opponents, including environmental organizations and local governments, contend that the initiative violates state laws by covering multiple subjects without proper disclosure and seek an injunction to halt its implementation, citing threats to air quality and public health. In a parallel lawsuit, the Building Industry Association of Washington is advocating for state compliance with the initiative's energy code regulations. Supporters assert that the initiative reflects voter intent, having passed with a significant majority in the November election. Critics argue that the campaign promoting the initiative was misleading, highlighting potential risks such as higher energy costs and environmental impacts.

As legal disputes unfold, a court hearing is anticipated in early 2025, with significant implications for Washington's energy policy and its approach to natural gas and renewable energy alternatives.