Phase 1 Cluster Study Update

The Bonneville Power Administration is announcing that the Large Generator Interconnection Transition Phase 1 Cluster Study will not be completed by August 18, 2025, and additional time is needed to complete the Phase 1 Cluster Study.

The additional time is primarily needed due to the combined total number of requests (167 eligible requests), the megawatt size of requests (61.1 GW of interconnection service) and the complexity of the Points of Interconnection in each Cluster Area.

The current estimated completion of the Phase 1 Cluster Study is January 30, 2026.