sum of all equivalent peak interruption durations in a bulk electric system during one year Note 1 to entry: If the energy not supplied is expressed in megawatt-minutes, and the annual peak load expressed in megawatts, then the bulk power energy curtailment index provides the system minutes aggregated over one year, and is expressed in minutes per year. Note 2 to entry: This entry was numbered 191-30-05 in IEC 60050-191:1990.
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