SDCL § 49-34A-25.4: Standards for approval of annual rate adjustments.

Upon receiving a filing under § 49-34A-25.3 for a rate adjustment pursuant to the tariff established in § 49-34A-25.2, the commission shall approve the annual rate adjustments if, after notice, hearing, and comment, the costs included for recovery through the tariff were or are expected to be prudently incurred and achieve transmission system improvements at the lowest reasonable cost to ratepayers.