Factors Contributing to Grid Strain
The emergency action addresses several factors contributing to potential electricity supply shortages. According to the order, PJM anticipated forecasted demand of approximately 111,500 megawatts or higher on Oct. 13. Additionally, numerous generating units are unavailable due to planned maintenance and other outages. Transmission constraints caused by scheduled power line outages could also limit electricity transfers between areas.
PJM is currently in its seasonal outage period, when transmission and generation facilities typically undergo scheduled maintenance and construction from mid-September through early December to ensure maximum availability during peak winter demand. Jeff Shields, a spokesperson for PJM, said electricity demand is growing faster than new generating capacity can come online, while unpredictable weather is leaving fewer opportunities for critical maintenance and construction.