Section 407-320-6 - RELIABILITY METRICSA. Each Investor-Owned T&D Utility shall collect and maintain the following Sustained Interruption and outage metrics information: a. Monthly and annual CAIDI.b. Monthly and annual SAIFIc. Monthly and annual SAIDI.d. For each service area, on a monthly and annual basis a classification of Sustained Interruptions by the identified cause. Information in this subsection (d) shall not be included in the Sec. 9(B) reports to customers.B. The Commission shall set individual benchmarks for SAIFI and CAIDI metrics for each utility through Commission Order. The benchmarks shall be based on the historic performance of each utility, or otherwise at levels that reflect reasonable service quality. The Commission may, by Commission Order (1) direct the T&D Utility to take corrective actions if benchmarks are not met, or, (2) impose financial penalties established by the Order.C. The CAIDI, SAIFI, and SAIDI metrics shall be calculated and reported with and without "major event days." The IEEE 2.5 Beta Method will be used to determine "major event days."65-407 C.M.R. ch. 320, § 6