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Table 2 Electricity Reliability Metrics (IEEE 1366) [36]

From: Buying electricity resilience: using backup generator sales in the United States to understand the role of the private market in resilience

SAIFI = \(\frac{{\sum }_{i=1}^{n}{N}_{i}}{{N}_{T}}\)

SAIDI = \(\frac{{\sum }_{i=1}^{n}{{r}_{i}N}_{i}}{{N}_{T}}\)

CAIDI = \({\sum }_{i=1}^{n}\frac{{{r}_{i}N}_{i}}{{N}_{i}}\)

  1. n: Number of events in a reporting period
  2. Ni: Number of customers without power for each disruption event
  3. NT: Total number of customers served
  4. ri: Restoration time for each disruption event