Massive Power Disconnect Affects Largest U.S. Electric Grid
A significant power disconnect occurred on the largest U.S. electric grid, managed by PJM Interconnection, affecting areas from Washington, D.C., to Chicago. The incident was triggered when a transmission line in northern Virginia, home to a large concentration of data centers, went out of service. This led to data centers switching to backup power, causing a sudden drop of over 3 gigawatts in power demand, approximately 3% of the grid's total demand. Despite the disturbance, PJM reported no impact on grid reliability. The event highlights the challenges of managing power demand fluctuations from data centers and other high-demand facilities.