Breaking: 67 Million on PJM Grid Face Federal Emergency Powers as Winter Looms
The Department of Energy granted PJM temporary authority to direct data centers and generators to keep the lights on during an October shortage.
By Alina Campbell ·
The U.S. Department of Energy declared a power grid emergency across 13 states and the District of Columbia to protect the roughly 67 million people served by the PJM Interconnection grid. Energy Secretary Chris Wright issued the order on Sunday, October 12, 2026, under section 202(c) of the Federal Power Act. This federal intervention granted PJM temporary emergency authority to keep the regional grid stable from October 13 through October 16. The order was a response to unusually warm October weather colliding with the fall shoulder season, when equipment is typically taken offline for maintenance.
PJM coordinates wholesale electricity for 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. For these residents, the federal order allowed PJM to call on generators to run in excess of their operating permits. It also authorized PJM to direct data centers and other large electricity users onto their backup generation if necessary. Federal officials stated that the measure was meant to prevent interruptions, not to announce scheduled blackouts, and no mandatory conservation orders were issued for households.
The specific alerts used during this period had distinct operational purposes. A Maximum Generation Alert tells transmission and generation owners that conditions will be tight so they can defer or cancel equipment maintenance and testing. It also informs neighboring grid operators that exports from PJM may be curtailed. A Capacity Advisory signals that projected conditions indicate an approaching capacity shortfall. On Friday, October 9, PJM issued the first ever Capacity Advisory for the following two days, a procedure PJM members endorsed in June 2026 for such circumstances.
On Monday, October 12, PJM issued a Maximum Generation Alert and a Load Management Alert for the next day. These alerts required no action from customers, but they triggered internal grid management protocols. PJM called on Demand Response programs, which pay customers who sign up in advance to cut electricity use when the grid is stressed. The alerts were extended through October 14 after forecasting demand of approximately 111,500 megawatts or higher. This level of demand was driven by the shoulder season maintenance schedule and the persistent load from large industrial customers.
The strain on the grid was exacerbated by data centers, which PJM describes as a 12-month, 24/7 phenomenon. Most of the new, rapidly growing demand comes from these energy-intensive large-load customers, whose consumption does not fall with the weather. This expanding demand is outpacing new transmission and electricity supply coming onto the system. The Department of Energy noted that PJM wanted to deploy auxiliary, standby, directly connected, battery storage, or other generation resources at these hyperscaler facilities and other large industrial sites to maintain stability.
Transmission constraints further complicated the situation by limiting how much electricity could move between zones. Generation was bottled in some areas because of these limits, particularly in resources serving congested zones in Washington D.C., Maryland, and Virginia. These specific zones are associated with the BGE, Pepco, and Dominion areas. On Friday, October 16, PJM issued another Capacity Advisory for the following Monday, with a load forecast of about 94,573 megawatts against expected generation outages of about 72,000 megawatts. This pattern highlights the ongoing challenge of balancing supply and demand during the transition to winter.
PJM’s Winter Outlook, released on November 5, 2026, indicates that the grid 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, plus about 3,200 megawatts of average exports to neighboring systems. That peak would set a new winter record if reached, driven primarily by demand growth from the new reality of data center consumption.
Reliable winter operations depend on strong generator performance during extreme cold, especially where transmission constraints limit deliveries. Michael Bryson, PJM’s senior vice president of operations, stated that the goal is to coordinate operations with generation and transmission owners to proactively manage the system. This ensures high performance levels when consumers need energy the most. The federal emergency powers used in October serve as a precedent for how the grid will manage these tight margins as the winter season progresses.
