Momentary Average Interruption Frequency Index (MAIFI)

Benchmarking Report

Momentary Average Interruption Frequency Index (MAIFI)

This PDF report includes benchmarking data (in a visual, chart-based format), an comprehensive KPI definition, characteristics of high performers and technical details on measuring Momentary Average Interruption Frequency Index (MAIFI). Purchase and download this easy-to-understand, presentation-ready report immediately to compare performance levels, set attainable performance targets, and push towards best-in-class performance for this KPI.

What is Momentary Average Interruption Frequency Index (MAIFI)?

The number of instances in which customers experience momentary service interruptions divided by the total number of customers served over the same period of time. Momentary service interruptions may be defined differently depending on the utility company (less than 1, 5, etc. minutes).

Why should Momentary Average Interruption Frequency Index (MAIFI) be measured?

Momentary Average Interruption Frequency Index (MAIFI) measures the average number of times a customer experiences a momentary interruption during the measurement period. A relatively high value for this metric is typically related to a few common factors, including excessive breaker or re-closure operations (i.e., scheduled service interruptions that resolve temporary faults in the system), power supply insufficiency, distribution system equipment outages (due to damage, bad weather, faulty equipment, etc.), and outages due to non-payment of the utilities service. MAIFI, in conjunction with SAIFI, SAIDI and CADI, are indices used to measure the reliability of a utility company's power system, excessive values of which can lead to poor customer satisfaction and high attrition rates.

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