(1) Except as provided in subsection (2) of this section, whenever any public service company shall file with the commission any schedule, classification, rule, or regulation, the effect of which is to change any rate, charge, rental, or toll theretofore charged, the commission shall have power, either upon its own motion or upon complaint, upon notice, to enter upon a hearing concerning such proposed change and the reasonableness and justness thereof. Pending such hearing and the decision thereon, the commission may suspend the operation of such rate, charge, rental, or toll for a period not exceeding ten months from the time the same would otherwise go into effect. After a full hearing, the commission may make such order in reference thereto as would be provided in a hearing initiated after the same had become effective.
(2)(a) The commission shall not suspend a tariff that makes a decrease in a rate, charge, rental, or toll filed by a telecommunications company pending investigation of the fairness, justness, and reasonableness of the decrease when the filing does not contain any offsetting increase to another rate, charge, rental, or toll and the filing company agrees to not file for an increase to any rate, charge, rental, or toll to recover the revenue deficit that results from the decrease for a period of one year.
(i) The filing company shall file with any decrease sufficient information as the commission by rule may require to demonstrate the decreased rate, charge, rental, or toll is above the long run incremental cost of the service. A tariff decrease that results in a rate that is below long run incremental cost, or is contrary to commission rule or order, or the requirements of this chapter, shall be rejected for filing and returned to the company.
(ii) The commission may prescribe a different rate to be effective on the prospective date stated in its final order after its investigation, if it concludes based on the record that the originally filed and effective rate is unjust, unfair, or unreasonable.
(b) The commission shall not suspend a promotional tariff. For the purposes of this section, "promotional tariff" means a tariff that, for a period of up to ninety days, waives or reduces charges or conditions of service for existing or new subscribers for the purpose of retaining or increasing the number of customers who subscribe to or use a service.
(3) The commission may suspend the initial tariff filing of any water company removed from and later subject to commission jurisdiction because of the number of customers or the average annual gross revenue per customer provisions of RCW
80.04.010. The commission may allow temporary rates during the suspension period. These rates shall not exceed the rates charged when the company was last regulated. Upon a showing of good cause by the company, the commission may establish a different level of temporary rates.
(4) At any hearing involving any change in any schedule, classification, rule, or regulation the effect of which is to increase any rate, charge, rental, or toll theretofore charged, the burden of proof to show that such increase is just and reasonable shall be upon the public service company.
(5) The implementation of mandatory local measured telecommunications service is a major policy change in available telecommunications service. The commission shall not accept for filing a price list, nor shall it accept for filing or approve, prior to June 1, 2004, a tariff filed by a telecommunications company which imposes mandatory local measured service on any customer or class of customers, except that, upon finding that it is in the public interest, the commission may accept for filing a price list or it may accept for filing and approve a tariff that imposes mandatory measured service for a telecommunications company's extended area service or foreign exchange service. This subsection does not apply to land, air, or marine mobile service, or to pay telephone service, or to any service which has been traditionally offered on a measured service basis.
(6) The implementation of Washington telephone assistance program service is a major policy change in available telecommunications service. The implementation of Washington telephone assistance program service will aid in achieving the stated goal of universal telephone service.
(7) If a utility claims a sales or use tax exemption on the pollution control equipment for an electrical generation facility and abandons the generation facility before the pollution control equipment is fully depreciated, any tariff filing for a rate increase to recover abandonment costs for the pollution control equipment shall be considered unjust and unreasonable for the purposes of this section.
(8) During a state of emergency declared under RCW
43.06.010(12), the governor may waive or suspend the operation or enforcement of this section or any portion of this section or under any administrative rule, and issue any orders to facilitate the operation of state or local government or to promote and secure the safety and protection of the civilian population.