Breaking: PJM Grid Emergency Covered 67 Million People in 13 States

The U.S. Department of Energy declared a power grid emergency across thirteen states and the District of Columbia in October 2026. This action granted PJM Interconnection temporary emergency authority to keep the regional grid stable from October 13 through October 16. Energy Secretary Chris Wright issued the order on Sunday October 12 under section 202(c) of the Federal Power Act. The order allowed PJM to call on generators to run in excess of their operating permits as needed and to direct data centers and other large electricity users onto their backup generation if necessary. It authorized PJM to direct designated generation units to produce electricity and, in limited circumstances, to use backup power reserves. The Department of Energy said PJM wanted to deploy auxiliary, standby, directly connected, battery storage or other generation resources at data centers, including hyperscaler facilities, and at other large industrial and commercial customer sites.

This region coordinates wholesale electricity across all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. These areas serve about 67 million people. For households in these locations, daily electricity use stayed normal and no action was required. Federal officials and PJM said the order was meant to prevent interruptions, not to announce scheduled blackouts. No blackouts occurred and no mandatory conservation orders were issued. The grid strain resulted from unusually warm October weather colliding with the fall shoulder season. During this time, generator and transmission owners take equipment offline for maintenance and upgrades ahead of winter. Most scheduled outages are prohibited in summer, and the summer peak period ended in mid-September.

On Friday October 9, PJM issued a Capacity Advisory for Monday October 12 and Tuesday October 13. This marked the first ever use of that procedure, which PJM members endorsed in June 2026 for circumstances when projected conditions indicate an approaching capacity shortfall. PJMs load forecast was about 102,000 megawatts of peak demand on Monday and about 104,000 megawatts on Tuesday. This was against previously scheduled generation outages of about 70,000 megawatts plus planned transmission outages. Paul Dajewski, PJMs senior manager for dispatch, told stakeholders that this volume of outages is typical for the shoulder season. On Monday October 12, PJM issued a Maximum Generation Alert and a Load Management Alert for October 13. It also extended the Capacity Advisory through October 14 and issued a Maintenance Outage Recall for October 14. This followed a forecast of demand of approximately 111,500 megawatts or higher.

A Maximum Generation Alert tells transmission and generation owners that conditions will be tight. This allows them to defer or cancel equipment maintenance and testing. It also tells neighboring grid operators that exports from PJM may be curtailed. On October 13, PJM extended the Maximum Generation Alert and Load Management Alert through October 14 and called on Demand Response. These are programs that pay customers who sign up in advance to cut electricity use when the grid is stressed. PJM said the alerts required no action from customers. Scheduled transmission line outages also limited how much electricity could move between zones. Generation was bottled in some areas because of transmission limits, particularly resources serving congested zones in Washington D.C., Maryland and Virginia. These include the BGE, Pepco and Dominion zones.

PJM had also used Department of Energy emergency orders during two unseasonably warm September periods. These were August 31 to September 4 and September 15 to 18. The orders let eligible resources keep operating beyond normal limits, and PJM deployed Demand Response both times. After sunset on those days, PJM had to cover net load as solar output fell faster than electricity use. On Friday October 16, PJM issued another Capacity Advisory for Monday October 19. The load forecast was about 94,573 megawatts against expected generation outages of about 72,000 megawatts plus planned transmission outages.

PJM says the shoulder-season reprieve is not what it used to be. Most of the new, rapidly growing demand comes from data centers and other energy-intensive large-load customers. Their consumption does not fall with the weather, making it a 12-month, 24/7 phenomenon. That expanding demand is outpacing new transmission and electricity supply coming onto the system. Unseasonably hot or cold weather now arrives outside the traditional peak seasons. This creates new challenges for grid stability during maintenance periods.

According to the PJM Winter Outlook released on November 5, 2026, the organization expects sufficient resources to reliably meet demand this winter under expected conditions. However, reserve margins continue to tighten as demand outpaces new supply. PJM expects 182,426 megawatts of operational capacity to serve a forecast winter peak of approximately 147,500 megawatts. This also includes about 3,200 megawatts of average exports to neighboring systems. That peak, driven by demand growth, would set a new winter record if reached. Reliable winter operations depend on strong generator performance during extreme cold, especially where transmission constraints limit deliveries in the BGE, Pepco and Dominion zones.

Michael Bryson, PJMs senior vice president of operations, stated that the goal is to coordinate operations with generation and transmission owners. He noted the aim is to proactively manage the system to perform at high levels when consumers need energy the most. This approach focuses on maintaining stability through the winter months. The recent emergency measures in October demonstrated the need for such coordination during periods of high demand. The integration of new large-load customers like data centers continues to shape the operational landscape of the regional grid.