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Current Grid Conditions

Feb. 19, 2021 - The MISO system is currently steady and stable with sufficient generation and transmission resources online. The Maximum Generation Alert for the South Region was terminated at 11am ET today. The system-wide Conservative Operations declaration and Cold Weather Alert are scheduled to terminate on Saturday, February 20 at 4pm ET. MISO will continue supporting member restoration efforts from this week's winter weather event. 

Previous Updates

Feb. 18, 2021 - While MISO reliably served demand across the footprint last night, another round of wintry weather across the South Region caused additional power outages overnight. MISO is supporting member restoration efforts and, as a precaution, the Maximum Generation Emergency Alert has been extended until Saturday, February 20 at 4pm ET across the South Region. MISO and its members will continue to closely monitor developing weather conditions across the footprint and take necessary actions if generation or transmission sufficiency changes. MISO will continue to work with neighboring reliability coordinators to maintain visibility into each other’s system conditions and stands ready to assist, as needed.

Feb. 17, 2021 - Ahead of the peak demand this evening, MISO declared emergency actions including instructing South Region members to issue a Public Appeal to conserve electricity between 6-11 p.m. ET.

Feb. 16, 2021 Due to the prolonged winter weather event causing forced generation outages and high load demand across the bulk electric system,  MISO declared a Max Gen Event – EEA 3 for the South Region (including most of Arkansas, Louisiana, Mississippi and Southeast Texas).  The declaration directed all Load Balancing Authorities in the affected areas to implement periodic power outages.

Feb. 16, 2021 - MISO and its members managed multiple interdependent issues this week including transmission constraints and generation outages.  MISO is also supporting its members’ restoration efforts in the South Region which remains under emergency declarations due to high demand and frigid temperatures.

Feb. 15, 2021 - Extreme weather continues to impact the MISO South Region. The Midcontinent Independent System Operator (MISO) declared a Maximum Generation Event – Emergency Event Step 2c in its South Region due to the extreme cold and weather conditions causing high demand on the bulk electric system. The declaration is effective February 15 at 6pm until 10pm ET. As part of its emergency procedures, MISO directed South Region members to make a public appeal of conservation to their customers to avoid a larger power outage.

Feb. 15, 2021 - MISO load demand reached an all-time high in western Southern Region. Sustained frigid temperatures and winter weather impacting the Midcontinent Independent System Operator (MISO) South Region contributed to the loss of generation and transmission. This led to emergency actions in the region’s western portion to avoid a larger power outage on the bulk electric system. Periodic power outages began early Monday morning for some customers in Southeast Texas.

Feb. 14, 2021 - MISO and it's members respond to extreme winter weather. The Midcontinent Independent System Operator (MISO) anticipates heavy energy demands through the Presidents Day weekend due to sustained frigid temperatures and inclement weather. The impact of winter weather is widespread across MISO’s footprint but is particularly harsh in the South Region. MISO is working closely with its members to maintain system reliability amid the extreme conditions.

Feb. 10, 2021 - MISO and its members are prepared and actively monitoring the winter weather, including well-below normal temperatures across the region. To prepare, we have taken proactive steps to ensure grid reliability. https://misoenergy.org/markets-and-operations/notifications-overview/