(1) Each electric utility shall maintain and record complete records of service interruptions on the distribution system as a whole and for each operating area on the distribution system.  These records shall enable the utility to calculate the customer average interruption duration index, system average interruption duration index, and system average interruption frequency index, both with and without the data associated with major events.

(2) An electric utility shall retain the records required by this rule for a minimum of five years and shall provide them to the commission upon request.