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Home My WebLink About20240821Errata to Response to Interlocutory Order Questions.pdf RECEIVED Wednesday, August 21, 2024 IDAHO PUBLIC _ ROCKY MOUNTAIN 1407 W.North Te Temple,SuiUTILITte 3 O COMMISSION POWER. Salt Lake City,UT 84116 A DIVISION OF PACIFICORP August 21, 2024 VIA ELECTRONIC DELIVERY Commission Secretary Idaho Public Utilities Commission 11331 W. Chinden Blvd Building 8 Suite 201A Boise, ID 83714 RE: CASE NO. PAC-E-24-05 IN THE MATTER OF THE APPLICATION OF ROCKY MOUNTAIN POWER REQUESTING APPROVAL OF $62.4 MILLON ECAM DEFERRAL Attention: Commission Secretary On July 26, 2024, PacifiCorp d/b/a Rocky Mountain Power provided a response to the questions requested by Commission Interlocutory Order No. 36274 in the above referenced matter. In the preparation of a response to the third production request of the staff of the Idaho Public Utilities Commission in Case No. PAC-E-24-05, the company noticed an error in the calculation of the revenue requirement component of the costs and benefits of Chehalis generation' that was provided with the July 26, 2024 response. The company has corrected this error and now provides the attached confidential corrected workpaper titled""CONF_Workpaper Chehalis—Energy and Capacity - Revised"which replaces the workpaper titled"CONF Workpaper_Chehalis_Energy and Capacity" in its entirety. Informal inquiries may be directed to Mark Alder, Idaho Regulatory Manager at(801) 220-2313. Very truly yours, Joe Steward 9�z a-I'D Senior Vice President, Regulation 'In the Matter of Rocky Mountain Power's Application for Approval of$62.4 Million ECAMDeferral,Rocky Mountain Power's Response to Interlocutory Order Questions,Case No.PAC-E-24-05 at 3 (July 26,2024)("The impact of removing the non-NPC revenue requirement of Chehalis currently included in Idaho customer rates is a reduction of$3.2 million...").The revised workpaper provided here corrects a formula error,which inadvertently included one additional cell,and changes the non-NPC revenue requirement impact from and a decrease of$3.2 million to a decrease of$2.2 million.