Amid the Independent Market Monitor’s denunciation of MISO’s fleet assumptions for long-term transmission plans, lead planners defended their approach to planning for 2040.

MISO’s Independent Market Monitor took his concerns to stakeholders over what he deems unrealistic fleet assumptions in MISO’s long-range transmission planning.

MISO IMM David Patton appeared before the Market Subcommittee to again criticize the future resource mix assumptions MISO is using to craft a second long-range transmission plan.

MISO’s annual winter lookback focused almost exclusively on operations during the widespread Dec. 23 deep freeze.

MISO tried to quell unease over its intended capacity accreditation with a stakeholder workshop to show that its proposal lines up with a new report.

MISO’s December emergency declaration ignited a debate over whether the RTO should enter emergency procedures to sustain its neighbors during extreme weather.

Months before MISO debuts a seasonal capacity auction, its IMM said he has uncovered a faulty assumption behind the seasonal capacity requirements.

MISO is releasing preliminary design details as it angles for a sloped demand curve in its capacity auction.

MISO, its Monitor and members debated the best course to implementing ambient adjusted line ratings during a Sept. 15 Advisory Committee discussion.

MISO's board may be coming around to the idea of using a sloped demand curve to price capacity as the RTO confronts the possibility of resource shortages.