Home About MISO Media Center MISO and its members manage unprecedented wintry conditions

MISO and its members manage unprecedented wintry conditions

High demand expected as below normal temperatures remain

For Immediate Release

February 16, 2021

Media Contact

Brandon D. Morris

CARMEL, Ind. — The Midcontinent Independent System Operator (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.

“In a situation where so many issues are showing up simultaneously, you have to prioritize the challenges to preserve overall grid reliability,” said Renuka Chatterjee, executive director – System Operations at MISO. “We will continue to work with our members and neighboring reliability coordinators to navigate a very complex and dynamic situation.”

MISO has issued several emergency declarations since last week, some of which resulted in temporary power interruptions in parts of Southeast Texas, Southwest/South-Central Louisiana and South-Central Illinois. Most of those outages have been restored. Load demand is being driven by the freezing temperatures expected through the rest of this week.

“We are utilizing every available operational resource to maintain the bulk electric system,” Chatterjee continues. “This extremely unusual situation requires nonstop coordination with our members and counterparts to work through the challenges.”

MISO Operating Conditions FAQs provide details on the necessary steps to manage system demand and ensure grid reliability. MISO continues to actively monitor developments related to the Arctic Outbreak, including information and guidance from our members and weather experts. Our top priorities are the health and safety of MISO employees and the reliability of the bulk electric system.


About MISO

Midcontinent Independent System Operator (MISO) is an independent, not-for-profit organization that delivers safe, cost-effective electric power across 15 U.S. states and the Canadian province of Manitoba. MISO is committed to reliable, nondiscriminatory operation of the bulk power transmission system and collaborating with all stakeholders to create cost-effective and innovative solutions for our changing industry. MISO operates one of the world’s largest energy markets with nearly $22 billion in annual gross market energy transactions.