With a challenging summer in the rearview, MISO expects more traditional reliability risks this fall while making blueprints for an industry roiled by change.

MISO staff continue to keep advisories in effect and compile data on the emergency and subsequent rolling blackouts caused by Hurricane Laura.

MISO said it quickly regained control during its first maximum generation emergency July 7 during a lasting heatwave.

MISO’s Monitor said the RTO would be better served by an even higher planning reserve margin, two days after it recorded its first emergency of the summer.

MISO will evaluate the merits of defining new seasonal reliability criteria and implementing a sub-annual capacity construct, stakeholders learned.

For the first time, MISO has found a loss-of-load risk outside of summer months, and said it may be more evidence for seasonal capacity supplies.

MISO executives said they continue to seek ways to improve the RTO’s response to an increasing number of emergency events.

MISO says the new process to better contain flows on its North-South settlement transmission path is working as intended.

MISO want to improve how owners of LMRs interact with a communications system that some think hampered the RTO’s response to a grid emergency this winter.

MISO’s most recent maximum generation emergency is yet another portent of its increasing need to rethink grid operations, execs told the Board of Directors.