PJM: Data Centers Panicked, Nearly Crashed the Grid on Purpose

PJM Interconnection and Dominion Energy are reviewing a July 22 event in Northern Virginia in which roughly 3,800 megawatts (MW) of data center load — the largest such disconnection in PJM's history — unexpectedly ripped itself off the grid after a routine, correctly cleared transmission fault, forcing PJM operators to scramble to keep the grid stable. The event has reignited a fight over whether data centers, which are growing explosively across the PJM footprint (including Marcellus/Utica territory), need to be held to new "ride through" standards so they stop treating minor grid hiccups like five-alarm fires.

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