20200115PAC to IIPA UT UAE Set 2 (1-2).pdf

October 31, 2019 Gary A. Dodge
Phillip J. Russell
HATCH, JAMES & DODGE, P.C. 10 West Broadway, Suite 400 Salt Lake City, UT 84101 [e-mail]
[e-mail] (C)
Kevin Higgins
Neal Townsend Courtney Higgins Justin Bieber ENERGY STRAGEGIES, INC.
215 S. State Street, Suite 200
Salt Lake City, UT 84111 [e-mail] (C) [e-mail] (C)(W) [e-mail] (C)(W)
[e-mail] (C)(W)
RE: UT Docket No. 18-035-36 UAE 2nd Set Data Request (1-2)
Please find enclosed Rocky Mountain Power’s Responses to UAE 2nd Set Data Requests 2.1-2.2.
Also provided are Attachments UAE 2.1 and 2.2. Sincerely, __/s/___
Jana Saba Manager, Regulation Enclosures C.c. Madison Galt/DPU [e-mail] (C)
Roxie McCullar/DPU [e-mail] (C) Sophie Hayes/WRA [e-mail] (C) Nancy Kelly/WRA [e-mail] (C) Penny Anderson/WRA [e-mail] (W)
Cheryl Murray/OCS [e-mail] (C)
Donna Ramas/OCS [e-mail] (C) Hunter Holman/UCE [e-mail] (C) Sarah Wright/UCE [e-mail] (C)
Salt Lake City, UT 84116
18-035-36 / Rocky Mountain Power October 31, 2019
UAE Data Request 2.1 UAE Data Request 2.1 Please describe how the depreciation study submitted in this docket would change if the
study were to assume adoption of the preferred portfolio identified in the 2019 Integrated Resource Plan. Response to UAE Data Request 2.1
Please refer to Attachment UAE 2.1 which shows the change from the depreciation study submitted in this docket if the coal plant lives in the 2019 Integrated Resource Plan (IRP) preferred portfolio were adopted for depreciation. The IRP preferred portfolio identifies the retirement date of Cholla plant to be 2020. The IRP action plan allows for a retirement date no later than 2023. For the purpose of analyzing depreciation changes for
this data request, a 2022 retirement date is assumed for Cholla plant. The IRP preferred portfolio includes the conversion of Naughton unit 3 to natural gas in 2020, whereas the depreciation case reflected Naughton unit 3 as being retired in 2019. Please note that the Company has not formally offered these changes to its filed position in the depreciation case but are providing them to parties for discussion purposes.
18-035-36 / Rocky Mountain Power October 31, 2019
UAE Data Request 2.2 UAE Data Request 2.2 Please produce all documents, including updated decommissioning studies, that
support your response to UAE 2.1, above. Response to UAE Data Request 2.2 Please refer to Attachment UAE 2.2 for the work papers supporting the schedule
of depreciation changes. The decommissioning estimates have not changed from the estimates included in the 2018 depreciation study filing in Docket No. 18-035-36.