Limitation on frequency of investigations.
RCW 81.20.060
in effectExpenses of a complete valuation, rate and service investigation shall not be assessed against a public service company under this chapter if such company shall have been subjected to and paid the expenses of a complete valuation, rate and service investigation during the preceding five years, unless the properties or operations of the company have materially changed or there has been a substantial change in its value for rate making purposes or in other circumstances and conditions affecting rates and services.
Expenses of a complete valuation, rate and service investigation shall not be assessed against a public service company under this chapter if such company shall have been subjected to and paid the expenses of a complete valuation, rate and service investigation during the preceding five years, unless the properties or operations of the company have materially changed or there has been a substantial change in its value for rate making purposes or in other circumstances and conditions affecting rates and services.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=81.20&full=trueFetched: 6/29/2026