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SB 5640

Requiring proof of adequate water supply before permitting new energy facilities.

2025-2026 Regular Session Introduced by Matt Boehnke and 1 co-sponsor

Washington bill requiring energy facilities to prove adequate water availability before permitting, potentially delaying renewable projects while protecting water resources.

First reading, referred to Environment, Energy & Technology.
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Bill Summary · SB 5640

Legislative bill overview

SB 5640 would require developers of new energy facilities in Washington to demonstrate proof of adequate water supply before obtaining permits. The bill establishes a prerequisite environmental review step that mandates water availability assessments prior to facility approval, potentially affecting solar, wind, geothermal, and other energy projects depending on their water needs.

Why is this important

Water scarcity is a critical issue in Washington, particularly east of the Cascades, where energy development and agricultural demands compete for limited resources. This requirement directly impacts Washington's ability to expand renewable energy infrastructure while protecting existing water users and ecosystems, making it relevant to both energy policy and environmental management.

Potential points of contention

  • Energy development timeline and costs: Requiring comprehensive water supply studies before permitting could delay projects and increase upfront costs, potentially discouraging investment in renewable energy infrastructure
  • Definition and scope ambiguity: The bill's effectiveness depends on how "adequate water supply" is defined and which energy facilities are covered, with unclear thresholds that could create inconsistent enforcement
  • Jurisdictional conflicts: Multiple agencies manage water rights in Washington; unclear coordination between permitting authorities and water management agencies could create bureaucratic bottlenecks or conflicting determinations

Compiled from official sources — confirm details with the bill’s official record.

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