Arkansas Code Title 23. Public Utilities and Regulated Industries § 23-4-101. Enforcement powers of commissions--Limitations

(a) With respect to the particular public utilities and matters over which each agency has jurisdiction, the Arkansas Public Service Commission or the Arkansas Department of Transportation shall have the power, after reasonable notice and after full and complete hearing, to enforce, originate, establish, modify, change, adjust, and promulgate tariffs, rates, joint rates, tolls, and schedules for all public service corporations, companies, and utilities and all rules with reference thereto and orders directing the performance of any duties devolving on the company, utility, common carrier, or public service corporation under the terms of this act.

(b) Whenever the commission or the department having jurisdiction, after notice and hearing, finds any existing rates, tolls, tariffs, joint rates, or schedules unjust, unreasonable, insufficient, unjustly discriminatory, or otherwise in violation of any of the provisions of the law, the commission or the department shall, by an order, fix reasonable rates, joint rates, tariffs, tolls, charges, or schedules to be followed in the future in lieu of those found to be unjust, unreasonable, insufficient, unjustly discriminatory, inadequate, or otherwise in violation of any of the provisions of this law.