PJM Extends Grid Alerts as Extreme Heat Keeps Power Demand Elevated

() -- PJM expanded emergency preparedness measures as a prolonged heatwave pushed electricity demand toward record highs, the grid operator said in a Thursday evening update. PJM said it kept its Maximum Generation Alert and Load Management Alert in effect for Thursday and extended both alerts through Friday across its footprint. The Maximum Generation Alert allows transmission and generation owners to postpone equipment maintenance or testing, helping keep more generating units available to meet electricity demand. PJM also uses the measure to alert neighboring grids that it may limit electricity exports if needed. The Load Management Alert prepares the grid operator for potential demand-response measures, including pre-emergency and emergency programs that pay participating customers to reduce electricity use during peak periods. To strengthen system reserves before the expected evening demand peak, PJM activated its Pre-Emergency Demand Response program on Wednesday afternoon. PJM also extended its Hot Weather Alert across the region through at least Saturday. The operator issues the alert before periods of extreme heat or high humidity so transmission operators, generators.