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Topic: pjm

High-voltage overhead power transmission lines (file photograph)
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Friday, 7/3, 07:20 PM

The largest US power grid takes emergency steps to keep the lights on in a July heat wave

  • PJM Interconnection, the operator of the biggest electricity grid in the United States, forecast record power demand and moved through a series of emergency measures this week as a punishing heat wave drove up air-conditioning use across the eastern US ahead of the July 4 holiday.
  • The grid held, but the strain highlighted how a surge in electricity demand — driven in part by data centers — is testing the system.

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