On June 23rd, PJM successfully served the region’s highest electricity demand in more than ten years, with regional grid load peaking at 160,526 MW. The extreme weather broke over 600 high-temperature records across the U.S. In Columbus, temperatures reached the mid-90s with the heat index near 105.

Early this week, PJM issued Maximum Generation, Load Management and Hot Weather alerts through Thursday, June 26th. These alerts are tools PJM uses to meet demand at a lower cost compared to requiring the construction of new power plants.

While some demand response resources were activated elsewhere across PJM’s 13-state footprint, no demand response was called within any Ohio zone, indicating that generation was able to meet demand without curtailment or emergency measures. Manufacturers have a direct stake in grid performance during these events, as shortfalls could impact operations and lead to costly infrastructure investments. 6/24/2025