(a) The Commission may, after hearing, upon notice, by order in writing, fix just and reasonable individual rates, joint rates, charges or schedules thereof, as well as commutation, mileage and other special rates, which shall be imposed, observed and followed thereafter by any public utility whenever the Commission determines any existing individual rate, joint rate, toll, charge or schedule thereof, or commutation, mileage, or other special rate to be unjust, unreasonable, insufficient, or unjustly discriminatory or preferential.
(b) No order of the Commission requiring a change in rates shall become operative until at least 30 days after service thereof except upon the written consent of the public utility affected.
Structure Delaware Code
Chapter 1. PUBLIC SERVICE COMMISSION
§ 301. Rate schedule and rate classifications.
§ 302. Determination of rate base.
§ 305. Hearing on rate change.
§ 306. Effective date of rate change; refund bond.
§ 307. Burden of proof; speedy determination.
§ 308. Service as a factor in the Commission's regulation of a public utility.
§ 309. Rate change by Commission initiative.
§ 310. Temporary rate reduction on order of Commission.
§ 311. Determination of rate by Commission.
§ 312. Action for refund of unauthorized rate increase.
§ 314. Water Utility Distribution System Improvement Charge.