The Council is developing the next Northwest Power Plan to ensure an adequate, efficient, economical, and reliable power supply for the region.

The Council is developing its next power plan. Throughout the process, we’ll keep you informed on important milestones, the methods and analysis, and other work as it becomes available.

Estimated timeline (click for detail):

Scenario scope


Scenario analysis is one way to account for uncertainty in the power planning landscape by evaluating the potential impacts of changing key assumptions.

Each scenario goes through a four step process examining market availability, regional needs, resource optimization and a check on adequacy: 


The Ninth Plan will have two priority scenarios with a range of sensitivities to be explored:

  1. New Resource and Transmission Risk 
    Broad scenario to explore uncertainty around resource availability, resource costs, and transmission availability
  • Scope of the New Resource and Transmission Risk Scenario (and video, Feb 2025)
  • Refined Scope of the New Resource and Transmission Risk Scenario (and video, Sept 2025)
  1. Changing Hydro Operations
    Exploring the implication for power system needs with uncertainty around future hydro operations.
  • Scope of the Changing Hydro Operations Scenario (and video, Aug 2025)

Coming up

  • April 2026: Staff will be sharing results of the regional resource optimization studies

Scenario modeling results


REGIONAL RESOURCE OPTIMIZATION
Modeling of new resources additions to inform Power Plan recommendations

MARKET AVAILABILITY STUDIES
A look at west-wide resource builds to determine market depth for in-region analysis

REGIONAL NEEDS ASSESSMENTS
Assessing the region’s future resource needs across a range of uncertainty

Ninth Plan technical elements


More resources


Ninth Plan news