Announcements

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  • On November 13, 2025, a cascading outage of dozens of transmission lines led to the loss of more than 1 GW of load and 4.5 GW of generation within seconds, leaving roughly 250,000 customers in four states without power for hours.

    To understand the underlying causes and contributing factors, WECC and NERC worked with the entities involved to conduct a comprehensive analysis of the incident. This report outlines the observations of that analysis, providing details of the disturbance, contributing factors, and actions to be considered to prevent a similar event. 

    WECC and NERC evaluate bulk power system disturbances that may affect reliability, with the objective of disseminating lessons learned to the industry. This report is intended to inform industry leaders, operators, and regulatory bodies as they work to ensure the reliability of the bulk power system. 

    WECC and NERC will hold a webinar on June 16 at 11 a.m. MDT to provide an overview of the Wyoming Disturbance Report. Branden Sudduth, vice president of reliability and performance analysis at WECC, will introduce the discussion. James Hanson, manager, operations analysis at WECC, and Rich Bauer, principal engineer for event analysis at NERC, will share highlights from the report.

    Read the report 
    Learn more

  • Our 2026 State of the Interconnection provides a high-level look at reliability issues across the Western Interconnection in the recent past and near future. Among the issues examined are reliability risks associated with large loads and extreme natural events, cybersecurity and physical security events, market development in the West, energy emergency alerts, and more. Explore the report. 

  • The Oversight Trends Update for Q2 2026 is now available. This report dives into crucial reliability and security oversight trends to provide interconnection-wide context for registered entity compliance programs. If you have any questions, reach out to [email protected]. 

  • The 2027 Business Plan and Budget is posted for stakeholder comments. This document contains information about all department budgets. We value constructive feedback and input from our stakeholders, and we encourage you to submit comments by the close of business on Friday, May 15. 

    We assume that comments submitted by member representatives reflect the position of the entity. All other comments will be considered the views of individual stakeholders. 

    View the 2027 Business Plan and Budget 

  • WECC has provided the 2026 Q1 Statutory Statement of Activities and Variance Report to NERC. If you have questions, please contact Jillian Lessner.

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