Seasonal Accredited Capacity (SAC) is the Capacity, in MW, assigned to a Planning Resource for a given season after accounting for its historic availability.

Source: https://www.misoenergy.org/

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MISO Capacity Market Update | Capacity Watch Blog

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MISO released its seasonal preliminary PRA report yesterday, January 15, 2025. This update includes preliminary PRA Data posting for Summer 2025, Fall 2025, Winter 2025/26 and Spring 2026.  The data includes PRMR, LCR, and Total Installed Capacity (ICAP). ESAI Power’s latest MISO Capacity report and forecast include updates on the Summer Peak forecast for 2025, how data center demand is impacting prices, details on scheduled and at-risk retirements, implementation of RBDC, and what market drivers will impact both the 2025/26 PRA and price outcomes over the next 10 years.

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