Story perspectives

Diesel Generators Ordered for July 4 Peak, Residents Warned

7/3/2026

Summary

Wright Orders Diesel

Energy Secretary Chris Wright signed an order on June 30 letting PJM require large-load sites—facilities with at least 50 MW peak load—to run backup diesel generators from 11:59 p.m. ET June 30 through 11:59 p.m. ET July 3.
PJM forecasts a peak demand of about 166,147 MW on Thursday, July 2, 2026, surpassing the 2006 record of 165,563 MW.
Diesel generators emit EPA-listed possible carcinogens, prompting resident worries that fumes could worsen air quality during the Fourth of July.

Summary

PJM Sparks Surge

PJM's spot wholesale electricity prices rose to nearly $300/MWh, spiking above $1,000/MWh during Virginia data-center congestion.
PJM holds 18 GW of reserve power deployable within 30 minutes—six times the reliability standard—and issued July 1 alerts urging generators to postpone maintenance and ready demand-response.
The DOE issued emergency orders for July 1-3 granting temporary emissions flexibility so certain plants can remain online and support reliability after PJM recalled maintenance outages on June 25.

History

Historical Context

The August 14, 2003 Northeast blackout left roughly 55 million people without power, revealing FirstEnergy’s alarm software failure and spurring the 2005 Energy Policy Act that made NERC reliability standards mandatory. Those rules empower FERC to direct PJM, the RTO serving 67 million customers, which in June ordered large-load sites to run diesel generators from June 30 to July 3, mirroring the 2003 emergency response.

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Wright Orders Diesel

Energy Secretary Chris Wright signed an order on June 30 letting PJM require large-load sites—facilities with at least 50 MW peak load—to run backup diesel generators from 11:59 p.m. ET June 30 through 11:59 p.m. ET July 3.
PJM forecasts a peak demand of about 166,147 MW on Thursday, July 2, 2026, surpassing the 2006 record of 165,563 MW.
Diesel generators emit EPA-listed possible carcinogens, prompting resident worries that fumes could worsen air quality during the Fourth of July.

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