While the high load and generation outages followed the pattern of the polar vortex, MISO managed to keep prices stable and maintain better reliability.

Grid operators turned to coal- and oil-fired generation as Arctic air sent temperatures plunging to record lows from the Great Plains to the Deep South.

New York’s electric system has the capacity to meet peak demand for electricity during extreme cold weather conditions through the 2017-2018 winter season.

ISO-NE forecasts sufficient resources to meet demand for electricity and will implement special operating procedures to maintain winter reliability.

MISO expects to easily manage this winter’s anticipated 103.4 GW of peak demand with an estimated 142 GW of available capacity.

MISO said it expects to have plenty of reserve capacity to cover upcoming winter operations, even as it announced a review of an emergency declaration.

A new PJM load forecast methodology cuts projected peaks for several key benchmarks by 3.5% or more.

MISO is cool and collected heading into the winter, staff told the Markets Committee of the Board of Directors.

MISO is forecasting a 35% planning reserve margin for the winter and has implemented several changes to improve coordination with pipeline operators and ensure fuel deliveries to its fleet.

SPP is confident of its preparation for winter, although it will be adding the winter-peaking Integrated System to its footprint in October.