Note: Single-source report; awaiting corroboration.
The U.S. Department of Energy (DOE) has issued an emergency order authorizing Duke Energy Carolinas, LLC and Duke Energy Progress, LLC to operate certain generating units at maximum output. This action aims to prevent blackouts in the Carolinas during a forecasted period of high temperatures and increased electricity demand.
The order, issued under Section 202(c) of the Federal Power Act, temporarily suspends air quality and other permit limitations that would otherwise restrict Duke Energy's generation capacity. According to the DOE, this step is necessary due to an unusually high load forecast coupled with hot weather in the region.
Duke Energy requested the emergency order, noting some of its generating units are constrained by environmental permits that limit their output. As a result, the system may lack sufficient generation to meet expected demand, potentially forcing the utility to reduce electricity supply to maintain grid stability and reliability.
The emergency order is effective from 4:00 PM Eastern Time on June 11, 2026, through 10:00 PM Eastern Time on June 12, 2026. The DOE emphasized the importance of maintaining affordable, reliable, and secure power for customers in Duke Energy's service territory during this period.