IC 8-1-46-17: "System average interruption frequency index"

Sec. 17. As used in this chapter, "system average interruption frequency index", or "SAIFI", means an index that:

(1) indicates the number of sustained service interruptions an electricity supplier's average customer experiences over a specified period; and

(2) is calculated by determining the quotient of:

(A) the total number of customers that experienced sustained service interruptions over the specified period; divided by

(B) the total number of customers;

in accordance with IEEE 1366.