State of the Interconnection 2025
The Independent Voice of Bulk Power System Reliability in the Western Interconnection
2024 was marked by significant change. Set against a backdrop of shifting energy policies, new regulations, extreme effects of aridification, and ongoing reshaping of the power system, the Western Interconnection continues to face challenges in key areas like the integration of IBRs, proliferation of large loads, and ever-increasing cyber and physical security threats. Working through these challenges with our industry partners reaffirms our mindset about the critical role the electric system plays in sustaining the health, prosperity, and daily lives of the people and communities in the West.
This year’s State of the Interconnection report looks at the forces that shaped the power system over the last year. The report evaluates the health of the system through key indicators of system performance and highlights some of the ways WECC and its partners are addressing challenges.
Through this report, WECC aims to share an overview of how the Western Interconnection—one of the most complex machines ever built—meets the challenges of a changing world while ensuring reliable power for millions of people.
—Melanie Frye, WECC President & CEO
For more detailed information, visit WECC's System Performance Data Portal, an interactive source for maps, graphics, and data related to the reliability of the Western Interconnection. The data portal is a companion to the State of the Interconnection.
For a printable version, email engage@wecc.org
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