Breaking: Federal order keeps lights on for 67 million in PJM grid emergency

The U.S. Department of Energy declared a power grid emergency across 13 states and the District of Columbia on Sunday, October 12, 2026. Energy Secretary Chris Wright issued the order under section 202(c) of the Federal Power Act. The directive granted PJM Interconnection temporary emergency authority to keep the regional grid stable from October 13 through October 16, 2026. This region serves approximately 67 million people across Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and the District of Columbia.

For the vast majority of households and businesses in these areas, daily electricity use stayed normal during that period. Federal officials and PJM stated that the order was meant to prevent interruptions rather than to announce scheduled blackouts. No mandatory conservation orders were issued, and no blackouts occurred. Residents did not need to take specific action to help the grid, although the emergency protocols allowed operators to manage the system more aggressively behind the scenes.

The order allowed PJM to call on generators to run in excess of their operating permits as needed. It also authorized the grid operator to direct data centers and other large electricity users onto their backup generation if necessary. The Department of Energy noted that 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 flexibility was crucial for balancing the supply and demand equation during the critical four-day window.

The strain on the grid resulted from unusually warm October weather colliding with the fall shoulder season. This period is when generator and transmission owners take equipment offline for maintenance and upgrades ahead of winter. Most scheduled outages are prohibited in the summer, so the maintenance backlog often lands in the fall. On Friday, October 9, PJM issued a Capacity Advisory for the following Monday and Tuesday. This was the first ever use of that procedure, which members endorsed in June 2026 for circumstances indicating an approaching capacity shortfall.

PJM’s load forecast showed about 102,000 megawatts of peak demand on Monday and about 104,000 megawatts on Tuesday. This demand faced previously scheduled generation outages of about 70,000 megawatts plus planned transmission outages. Paul Dajewski, PJM’s 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 after forecasting demand of approximately 111,500 megawatts or higher.

A Maximum Generation Alert tells transmission and generation owners that conditions will be tight. It allows them to defer or cancel equipment maintenance and testing to ensure resources are available. The alert also notifies neighboring grid operators that exports from PJM may be curtailed. On October 13, PJM extended these alerts through October 14 and called on Demand Response programs. These programs pay customers who signed up in advance to cut electricity use when the grid is stressed. PJM clarified that the alerts required no direct action from general customers.

Scheduled transmission line outages also limited how much electricity could move between zones. Generation was bottled in some areas because of these transmission limits. This was particularly true for resources serving congested zones in Washington D.C., Maryland, and Virginia, specifically the BGE, Pepco, and Dominion zones. On Friday, October 16, PJM issued another Capacity Advisory for Monday, October 19. The load forecast for that day was about 94,573 megawatts against expected generation outages of about 72,000 megawatts plus planned transmission outages.

PJM notes that 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, creating a 12-month, 24/7 phenomenon. In its Winter Outlook released on November 5, 2026, PJM 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.

That peak 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, PJM’s senior vice president of operations, said the goal is to coordinate operations with generation and transmission owners. He emphasized the need to proactively manage the system to perform at high levels when consumers need energy the most.