Section 69-3-306 - Classification of service(1) Except as provided in subsection (3), the commission may prescribe classifications of the service of all public utilities. Classifications may take into account the quantity used, the time when used, and any other reasonable consideration. A public utility is required to conform its schedule of rates, tolls, and charges to the classifications.(2) The commission shall prescribe a declining block rate structure or a structure appropriate to customer-generators for electric service, when cost-justified.(3) Classifications of service for customer-generators must be determined in accordance with Title 69, chapter 8, part 6.Amended by Laws 2017, Ch. 248,Sec. 4, eff. 5/3/2017.En. Sec. 13, Ch. 52, L. 1913; re-en. Sec. 3893, R.C.M. 1921; re-en. Sec. 3893, R.C.M. 1935; R.C.M. 1947, 70-115; amd. Sec. 1, Ch. 517, L. 1985.