MISO’s system is at the mercy of faster interconnections of new resources and retirement delays, executives said in a quarterly address to the board and stakeholders.

A relatively low turnout of constructed capacity in recent years could deepen a potential 2.7-GW capacity deficit in summer 2025 to more than 14 GW by summer 2029, MISO and OMS revealed in a five-year projection.

MISO and the Organization of MISO States’ resource adequacy survey warned that a more than 9-GW shortfall could loom by the decade’s end, though it painted an adequate supply picture for the upcoming year.

MISO will fire up its capacity auction machinery beginning April 18 after it was forced to delay the auction last month on a FERC order.

MISO executives issued warnings about its future resource adequacy in front of its board of directors while some state regulators and stakeholders pushed back.

MISO and the Organization of MISO States’ 2022 resource adequacy survey again sounded the supply alarm rung from the 2022/23 capacity auction results.

MISO said it and the OMS’ annual resource adequacy survey will transition into a seasonal format following its implementation of four-season capacity market.

MISO and the Organization of MISO States said things are looking up in their annual resource adequacy assessment.

MISO and its Independent Market Monitor are at odds over how and how quickly the RTO should address its resource adequacy, board members heard Tuesday.

MISO could face a generation shortfall as early as 2022, according to the annual survey by the Organization of MISO States and the RTO.