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MISO manages system amid above-normal temperatures

Media contact: Mark Brown | 606-407-5719

UPDATE - Monday, May 14, 2018 - 4:30 p.m. CT

MISO continues to carefully monitor weather and system conditions today. Temperatures and generation availability are more favorable than expected across the North and Central regions of the MISO footprint this week.

Above-average heat, combined with some ongoing generation unit outages, will keep the South region in conservative operations through Wednesday, May 16. A hot weather advisory is also in effect through the period. These declarations are among several steps MISO uses to coordinate and preserve transmission and generation resources needed for system reliability.

MISO's South region includes portions of Arkansas, Louisiana, Mississippi and East Texas. As the regional transmission organization, MISO coordinates closely with its members, including local utilities, and neighboring system operators to manage generation and transmission resources across the system to ensure continued reliability.

UPDATE - Sunday, May 13, 2018 - 5 p.m. CT

MISO continues to monitor unseasonably warm temperatures forecast for the central and southern portions of its footprint. MISO has declared conservative operations for the entire footprint effective Monday, May 14, through Wednesday, May 16. A hot weather alert will also be in effect for the MISO South region.

Based on the latest load forecast and generation availability, MISO has canceled a Maximum Generation Alert earlier issued for May 14-16. Since late last week, some generation resources have been restored to support system needs; however, above-normal temperatures will still challenge available resources.

The MISO team is coordinating closely with its members, including local utilities, and neighboring system operators to manage generation and transmission resources across the system to ensure continued reliability of the grid.

Original post - Friday, May 11, 2018

The Midcontinent Independent System Operator is working proactively to ensure power system reliability ahead of higher-than-normal temperatures forecast for parts of its footprint next week.

MISO has declared a Maximum Generation Alert for its entire footprint, effective Monday, May 14, through Wednesday, May 16. Conservative operations will be in effect across the footprint through the same period.

Above normal temperatures in the central and southern half of the footprint are coinciding with a high number of planned and unplanned outages of power generating units.

“The MISO team is coordinating closely with our members, including local utilities, and neighboring system operators to manage generation and transmission resources across the system to ensure continued reliability of the grid,” said Robert Benbow, MISO’s executive director of Energy.

MISO operators are closely monitoring developing weather and system conditions, and will follow all established procedures to protect the bulk electric system.

The Maximum Generation Alert and conservative operations declarations are among several steps MISO uses to help coordinate and preserve transmission and generation resources needed for system reliability.

“MISO operators and our members train regularly and intensively to manage the power system in all types of conditions,” added Tag Short, director of MISO’s South region operations. “We take a proactive, coordinated approach to assess conditions and prepare accordingly to maintain transmission reliability.”