Emergency Rating

A transmission facility rating that reflects operation for a specified, finite period.

Definition by MISO

Source: ¹ (p10)

A transmission facility rating that reflects operation for a specified, finite period, rather than reflecting continuous operation. An emergency rating may assume acceptable loss of equipment life or other physical or safety limitations for the equipment involved

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Last modified: 2025-06-20

← Emergency · Energy Equity →

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1. MISO (2023). FERC Order 881 Update. https://cdn.misoenergy.org/20230822%20RSC%20Item%2005%20FERC%20Order%20881%20Update%20(RSC%202018%2054A)%20(RSC%202021%2054B)629904.pdf ↩