20210910PAC to IIPA Revised 2.pdf

1407 W North Temple, Suite 330 Salt Lake City, Utah 84116
September 10, 2021
Eric L. Olsen (ISB# 4811) ECHO HAWK & OLSEN, PLLC 505 Pershing Ave., Ste. 100
P.O. Box 6119 Pocatello, Idaho 83205 [e-mail] (C)
Anthony Yankel/IIPA [e-mail] (C)
RE: ID PAC-E-21-07 IIPA Set 1 (1-3)
Please find enclosed Rocky Mountain Power’s 1st Revised Response to IIPA 1st Set Data Request
2.Provided via encryption and BOX is Confidential Attachment IIPA 2-2 1st Supplemental.Confidential information is provided subject to protection under IDAPA 31.01.01.067 and31.01.01.233, the Idaho Public Utilities Commission’s Rules of Procedure No. 67 – InformationExempt from Public Review, and further subject to the Non-Disclosure Agreement (NDA)executed in this proceeding.
If you have any questions, please feel free to call me at [phone].
Sincerely,
____/s/____ J.Ted WestonManager, Regulation
Enclosures C.c.: Jan Noriyuki/IPUC [e-mail] (C)Ronald L. Williams/PIIC [e-mail] Bradley G. Mullins/PIIC [e-mail]
Adam Gardner/PIIC [e-mail] (W)
Kyle Williams/PIIC [e-mail] (W) Val Steiner/PIIC [e-mail] (W) Ben Otto/ICL [e-mail] (C) Randall C. Budge/Bayer [e-mail] (C) Thomas J. Budge/Bayer [e-mail] (W)(C) Brian C. Collins/Bayer [e-mail] (W)(C) Maurice Brubaker/Bayer [e-mail] (C)
RECEIVED
2021 SEP 10 PM 3:21
IDAHO PUBLIC
UTILITIES COMMISSION
Kevin Higgins/Bayer [e-mail] (C) Lance Kaufman/Bayer [e-mail] (C) James R. Smith/Bayer [e-mail] (C) Brad Purdy [e-mail] (C)
PAC-E-21-07 / Rocky Mountain Power September 10, 2021 IIPA Data Request 2 – 1st Revised
IIPA Data Request 2 Exhibit 45 contains, by rate schedule and rate block, all of the Idaho “normalized billing determinants” for 2019 and 2020. Information is sought with respect to the
development of these values. Please provide all data in Excel format.
(a) For each billing unit listed for 2019 and 2020, please provide the actual billing determinants for each month of 2019 and 2020.

(b) For each billing unit listed for 2019 and 2020, please provide the weather normalizing adjustment for each billing determinant for each month of 2019 and 2020. (c) For each billing unit listed for 2019 and 2020, please provide the weather
normalizing adjustment for each month of 2019 and 2020.
(d) For each billing unit listed for 2019 and 2020, please provide the normal weather values and the actual weather values that were used to develop the
weather normalized adjustment for each month of 2019 and 2020.
(e) What is the source data used to establish the normalized weather figures? Over what period was this data gathered? (f) Please provide the source data utilized to develop the source data used for
weather normalization in this case.
(g) What equation(s) were used to convert the normalized weather values into normalized billing units in Exhibit 45?

(h) For each billing unit listed for 2019 and 2020, please provide the value for any non-weather normalizing adjustments used for each month of 2019 and 2020. Please specify the reason for these normalizing adjustments. 1st Revised Response to IIPA Data Request 2

Further to the Company’s response to IIPA Data Request 2 dated July 16, 2021, and referencing the telephone conference held with the Idaho Public Utilities Commission (IPUC) staff on September 7, 2021, the Company provides the following clarified / revised response for subpart (e) and provides a supplemental
attachment to Confidential Attachment IIPA 2-2, as noted below. Note: all other information, responses to subparts and attachments provided with the Company’s original response remain unchanged and valid. The Company’s original response to subpart (e) stated “The source data used to
establish the normalized weather figures is the actual daily HDD and CDD data
PAC-E-21-07 / Rocky Mountain Power September 10, 2021 IIPA Data Request 2 – 1st Revised
for the preceding 20 years (1999 through 2018 for 2019). Please refer to the Company’s response to subpart (c) above regarding 2020 weather normalizing adjustments. The data is gathered from daily information provided by the Company’s weather vendor”.

The Company clarifies and revises its original response to subpart (e) so that it reads as follows:
“The source data used to establish the normalized weather figures is the actual
daily HDD and CDD data for the 20-year weather normalization period (1998 to 2017 for 2019, 1999 to 2018 for 2020). Please refer to the Company’s response to subpart (c) regarding 2020 weather normalizing adjustments. The data is gathered from daily information provided by the Company’s weather vendor”.
Please refer to Confidential Attachment IIPA 2-2 1st Supplemental which provides
the 1998 daily heating degree days (HDD) and cooling degree days (CDD). This information supplements the information previously provided in Confidential Attachment IIPA 2-2.

Confidential information is provided subject to protection under IDAPA 31.01.01.067 and 31.01.01.233, the IPUC’s Rules of Procedure No. 67 – Information Exempt from Public Review, and further subject to the Non-Disclosure Agreement (NDA) executed in this proceeding.

Recordholder: James Zhang / Lee Elder Sponsor: Robert Meredith