MISO set its 122-GW summertime peak on the unofficial last week of summer, with widespread heat necessitating back-to-back maximum generation warnings.

MISO suggested an approximately $20 billion portfolio for its second long-range transmission planning effort that contains several 765-kV line segments.

MISO has enacted conservative operations, a hot weather alert and a capacity advisory for its Midwest region ahead of a widespread heat wave set to bake the U.S. this week.

MISO’s capacity auction shortfall has nearly doubled its probability of load shedding in its Midwest region, prompting discussion of must-offer requirements.

FERC has allowed MISO to use a separate-but-equal postage stamp rate divided between MISO Midwest and MISO South for some of its major transmission buildout.

MISO plans to file in December to create separate but identical cost allocation designs for MISO Midwest and MISO South under its long-range transmission plan.