A company filing a rate change based on changes in general operating expenses must update the test period fuel costs using actual fuel costs for the most recent twelve-month period.
[Statutory Authority: RCW 81.04.160, 81.77.030 and 80.01.040. 01-08-012 (Docket No. TG-990161, General Order No. R-479), § 480-70-346, filed 3/23/01, effective 4/23/01.]