20:10:13:43Cost of service under the new rates.

The initial application for a rate increase under this chapter shall include a cost of service study by customer class of service, by rate classification, if so ordered, or other appropriate categorization showing revenues, costs, and profitability for each of the rate categories, identifying the procedures and underlying rationale for cost and revenue allocations.

Source: 2 SDR 90, effective July 7, 1976; 12 SDR 151, 12 SDR 155, effective July 1, 1986.