While PJM experienced some of its highest peak loads ever during the late January winter storm, it overestimated load, with relatively high load forecasting errors, RTO officials told the Operating Committee.

PJM’s forecasting of hourly peak loads continued to improve in November, with an error rate of just 1.17%, staff told the RTO’s Operating Committee.

The PJM Independent Market Monitor found that modeling issues were the largest cause of synchronized reserve underperformance during a July 22 spin event, in which about 80% of assigned reserves responded.

The Operating Committee endorsed revisions to Manual 13: Emergency Operations to add protocols for PJM and transmission owners to monitor and coordinate necessary actions when wildfires may disrupt infrastructure.