Power plant (Representational image)
US Secretary of Energy Chris Wright has issued an emergency order authorising PJM Interconnection, the regional transmission operator serving much of the Mid-Atlantic and Midwest regions, to run designated power generation units as needed to protect grid stability.
The federal directive, issued on October 12, grants PJM temporary emergency authority running from October 13 through October 16. Under the order, the grid operator can mandate certain power plants to generate electricity and, in limited circumstances, tap into backup power reserves to maintain a steady flow of energy across its multistate network, as per the order available on the department’s official website.
Federal officials and grid managers clarified that the order is designed specifically to prevent power interruptions and not to announce scheduled blackouts.
Why the emergency order has been issued
Headquartered in the Philadelphia area, PJM Interconnection coordinates wholesale electricity movement across all or parts of 13 states and the District of Columbia.“PJM serves as the Reliability Coordinator and Balancing Authority for its region and is, therefore, responsible for overseeing the dispatch of generation to meet system demand at all times within the limits of the transmission system.
The PJM Region includes 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,” the order says.Ahead of strained conditions, the operator issued a Maximum Generation Alert and a Load Management Alert for October 13, pointing to a confluence of weather and scheduled infrastructure downtime.
Due to ‘unseasonably warm autumn weather’, forecasted electricity demand is expected to reach approximately 111,500 megawatts or higher on October 13.The second reason is the maintenance window. The grid is currently in its standard seasonal outage cycle, which runs from mid-September through early December. During this period, utilities routinely take generation units and power lines offline for maintenance and upgrades to ensure peak availability ahead of freezing winter weather.Scheduled transmission line outages have restricted the volume of electricity that can be transferred between different zones on the system.According to the Department of Energy (DOE), without emergency federal intervention, PJM faced conditions where it might have had to reduce or cut power service to keep the regional grid balanced."It is our understanding that PJM seeks to unlock and deploy backup generation resources (whether auxiliary, standby, directly-connected, battery storage, or other, and whether synchronized or not to the bulk-power system) at data centers (including, but not limited to, hyperscaler facilities) and at other large load industrial and commercial customer sites as another tool to mitigate any undue risk to the bulk-power system," the order noted.
What it means for residents in impacted US states
While PJM emphasised that the initial alert does not require immediate mandatory action from household customers, the operational strain could bring voluntary conservation measures into play. Day-to-day electricity usage remains normal, and the emergency declaration is aimed at coordinating power plants to keep systems stable.PJM has, however, issued capacity advisories and has the option to activate demand response initiatives.
If conditions tighten, businesses and residents across the 13-state footprint could be asked to voluntarily dial back non-essential power consumption during peak hours.NERC Reliability Standard EOP-011-4 addresses Emergency Operations. Requirement 2 provides that “[e]ach Balancing Authority shall develop, maintain, and implement one or more Reliability Coordinator-reviewed Operating Plan(s) to mitigate Capacity Emergencies and Energy Emergencies within its Balancing Authority Area.”Balancing Authorities are responsible for requesting that their respective Reliability Coordinators issue an EEA in accordance with Requirement 2 and Attachment 1 to Reliability Standard EOP-011-4. Among other things, Requirement 2.2.4 of this reliability standard authorizes Balancing Authorities to make “[p]ublic appeals for voluntary Load reductions.”Moreover, section 2.2.9 requires Balancing Authority Operating plans to include provisions for “Transmission Operators to implement operator-controlled manual Load shedding, undervoltage Load shedding, or underfrequency Load shedding,” and section 2.2.10 requires such plans to determine reliability impacts of “extreme weather conditions.”These procedures align with North American Electric Reliability Corporation (NERC) Reliability Standard EOP-011-4, which governs emergency operations. Under these standards, balancing authorities must maintain plans to handle capacity shortfalls and extreme weather impacts.