Washington Revised Code Title 80. Public Utilities § 80.04.250. Valuation of public service property--Authority of commission

(1) The provisions of this section are necessary to ensure that the commission has sufficient flexible authority to determine the value of utility property for rate making purposes and to implement the requirements and full intent of chapter 288, Laws of 2019.

(2) The commission has power upon complaint or upon its own motion to ascertain and determine the fair value for rate making purposes of the property of any public service company used and useful for service in this state by or during the rate effective period and shall exercise such power whenever it deems such valuation or determination necessary or proper under any of the provisions of this title.

The valuation may include consideration of any property of the public service company acquired or constructed by or during the rate effective period, including the reasonable costs of construction work in progress, to the extent that the commission finds that such an inclusion is in the public interest and will yield fair, just, reasonable, and sufficient rates.

(3) The commission may provide changes to rates under this section for up to forty-eight months after the rate effective date using any standard, formula, method, or theory of valuation reasonably calculated to arrive at fair, just, reasonable, and sufficient rates. The commission must establish an appropriate process to identify, review, and approve public service company property that becomes used and useful for service in this state after the rate effective date.

(4) The commission has the power to make revaluations of the property of any public service company from time to time.

(5) The commission shall, before any hearing is had, notify the complainants and the public service company concerned of the time and place of such hearing by giving at least thirty days' written notice thereof, specifying that at the time and place designated a hearing will be held for the purpose of ascertaining the value of the company's property, used and useful as aforesaid, which notice must be sufficient to authorize the commission to inquire into and pass upon the matters designated in this section.

(6) Nothing in this section limits the commission's authority to consider and implement performance and incentive-based regulation, multiyear rate plans, and other flexible regulatory mechanisms.