PJM Spot Power Tops $1,000/MWh as Heat Meets Fall Maintenance

An unseasonable heat wave in the Midwest and Mid-Atlantic collides with PJM Interconnection's fall maintenance season, forcing a Maximum Generation Alert and capacity advisory. Spot power at PJM's Western hub spiked to $1,021/MWh, more than double the day-ahead average, as roughly 62 GW of generation is offline for planned work. The event underscores tight grid margins and potential for price volatility as weather and maintenance schedules intersect.