GAO: No Consensus on GMD Risk to Grid - RTO Insider

June 22, 2025

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GAO: No Consensus on GMD Risk to Grid

GAO-19-98

Dec 23, 2018

A GAO report on geomagnetic disturbances (GMDs) found a lack of consensus on how much of a risk they pose to U.S. electric grid reliability.

FERC & Federal Reliability Transmission Operations

KeywordsFederal Energy Regulatory Commission (FERC)geomagnetic disturbances (GMD)North American Electric Reliability Corp. (NERC)RM18-8 U.S. Department of Energy (DOE)U.S. Department of Homeland Security (DHS)

Rich Heidorn Jr.

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