MISO extends conservative operations, cancels maximum generation emergency event

摘要

The Midcontinent Independent System Operator has extended conservative operations through July 10 for its central and north regions, as wholesale power prices reached a nine-month high. Conservative operations started at 1 pm ET July 6 as a hot weather alert was declared July 1 and is in effect through July 10, according to the ISO. The ISO declared a maximum generation emergency event at 1 pm July 7, which was terminated by 5:30 pm ET. “All transmission and generation maintenance is suspended in the affected area for the duration of the conservative operations period, unless such maintenance will result in improved bulk electric system monitoring, control and security,” according to the ISO’s conservative operations notice. “Such maintenance will be coordinated between MISO and the applicable entity.” Above-normal temperatures were driving up cooling-demand for power load. MISO forecast peakload to reach 119.72 GW July 8, 118.35 GW July 9 and 116.5 GW July 10. Peakload has averaged 107,721 MW so far this month, about 2% above the year-ago levels, according to ISO data. MISO was importing about 5,670 MW from the PJM Interconnection around 3:10 am ET July 8, 33% more than scheduled, even as PJM was under its own hot weather alert through July 9, according to PJM data. ISO wind generation was around 4,875 MW at 2 pm ET July 8, 30% lower than the forecast level.