MISO is determined to file with FERC by the end of March to introduce a probabilistic capacity accreditation that’s controversial among its stakeholders.

MISO said it has landed on a final design in its quest to move to a sweeping capacity accreditation that will better measure generators’ availability based on predetermined risky hours.

MISO won’t place conditions on either queue entrants or generation retirements in its quest to maintain system reliability by prescribing generating attributes.

MISO again found planned generation retirements continue to outstrip additions in its third annual Regional Resource Assessment

MISO said it will push back a contentious filing for a new, marginal approach to capacity accreditation into early next year.

Stakeholders remain frustrated with MISO’s plan to enact a marginal capacity accreditation as staff insist that the approach will measure the true value of capacity.

State regulators of MISO South are withholding support for MISO’s plan to implement a sloped demand curve in its capacity auctions based on a proposed option for states to shield themselves from the effects.

MISO is holding to its plan to enact a widescale marginal capacity accreditation while swapping risky hours for peak load to calculate its reserve margin requirements.

In the wake of MISO’s first seasonal capacity auction, members have asked the RTO to improve its generator outage rules, preliminary data sharing and the registry tool used to track capacity.

MISO will evaluate through the end of the year how it can measure and encourage six generating attributes that it says are necessary to its system operations.