IC 8-1-46-5: "Customer average interruption duration index"

Sec. 5. As used in this chapter, "customer average interruption duration index", or "CAIDI", means an index that:

(1) indicates the average time required to restore electric service to an electricity supplier's customers affected by sustained service interruptions; and

(2) is calculated by determining the quotient of:

(A) the sum of sustained service interruption durations in minutes for a specified period; divided by

(B) the total number of customers affected by the sustained service interruptions;

in accordance with IEEE 1366.