20200714PAC to Staff 1-8.pdf

1407 W North Temple, Suite 330 Salt Lake City, Utah 84116 July 14, 2020
Diane Hanian
Idaho Public Utilities Commission 472 W. Washington Boise, ID 83702-5918 [e-mail] (C)

RE: ID PAC-E-20-07 IPUC 1st Set Data Request (1-8)
Please find enclosed Rocky Mountain Power’s Responses to IPUC Data Requests 1-8. IPUC 6
will arrive under separate cover. Also provided is Attachment IPUC 7. If you have any questions, please feel free to call me at [phone].
Sincerely,
____/s/____ J. Ted Weston
Manager, Regulation
Enclosures
RECEIVED
2020 July 14, PM 4:12
IDAHO PUBLIC
UTILITIES COMMISSION
PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 1 IPUC Data Request 1
Is the Second Amended Power Purchase Agreement included in the Application the current approved contract? If not, please provide a copy of the complete currently approved contract with all amendments.
Response to IPUC Data Request 1 Yes. The Second Amended Power Purchase Agreement (PPA), fully executed on
September 12, 2007, between Birch Creek Power Company, Inc. and Utah Power and Light (UP&L) was provided with the Company’s Application in Case PAC-E-20-07 dated June 3, 2020. Note: the original PPA between Birch Creek Power Company, Inc. and UP&L was dated August 21, 1984, and the First Amended
PPA between Birch Creek Power Company, Inc. and UP&L was dated January
20, 1992.

Recordholder: Kyle Moore
Sponsor: To Be Determined
PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 2 IPUC Data Request 2
Please provide the full schedule of Fixed Energy Rates listed in the Restated Appendix B of the Second Amended Power Purchase Agreement. Response to IPUC Data Request 2 Please refer to the Second Amended Power Purchase Agreement (PPA) between
Birch Creek Power Company, Inc. and Utah Power and Light Company (UP&L)
provided with the Company’s Application in Case PAC-E-20-07 dated June 3, 2020. Specifically, Restated Appendix B (Schedule of Energy Purchased Rates) contains the full schedule of Fixed Energy Rates, as listed in the first table of the appendix. The years between those years listed (example: 4, 6, 10 …) use the
same rate as the previously stated rate until a new rate is stated (for example, Year
6 rate is stated as “$115/kW-Yr” plus “18 Mill/kWh”, Year 7 through Year 9 use that same rate until the schedule states new rates beginning in Year 10).
Recordholder: Kyle Moore
Sponsor: To Be Determined
PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 3 IPUC Data Request 3
Please provide the order number and case number that approved the schedule mentioned above. Response to IPUC Data Request 3 The Company assumes that “mentioned above” is intended to be a reference to
IPUC Data Request 2. Based on the foregoing assumption, the Company responds
as follows: To date, the Company has been unable to locate records providing an Idaho Public Utilities Commission (IPUC) case number and / or order number
approving the Second Amended Power Purchase Agreement (PPA), fully
executed on September 12, 2007, between Birch Creek Power Company, Inc. and Utah Power and Light Company (UP&L). Nor has the Company located records providing an IPUC case number and / or order number approving the original PPA dated August 21, 1984, or the First Amended PPA between Birch Creek
Power Company, Inc. and UP&L was dated January 20, 1992.
Recordholder: Ted Weston
Sponsor: To Be Determined

PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 4 IPUC Data Request 4
What is the most recently approved nameplate capacity of this project? Please provide proof of the approval. Response to IPUC Data Request 4 Please refer to the Company’s response to IPUC Data Request 3. Note: (1) the
original power purchase agreement (PPA) between Birch Creek Power Company,
Inc. and Utah Power and Light Company (UP&L) dated August 21, 1984 stated a nameplate capacity of 2,800 kilowatts (kW), (2) the First Amended PPA between Birch Creek Power Company, Inc. and UP&L dated January 20, 1992 amended the nameplate capacity from 2,800 kW to 2,645 kW, and (3) the Second Amended
PPA, fully executed on September 12, 2007, between Birch Creek Power
Company, Inc. and UP&L amended the nameplate capacity from 2,645 kW to 2,650 kW.
Recordholder: Ted Weston / Kyle Moore
Sponsor: To Be Determined
PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 5 IPUC Data Request 5
When was the current 2,650 kW turbine-generator installed? Has the current nameplate capacity of 2,650 kW been approved by the Commission? Response to IPUC Data Request 5 Please refer to the Company’s response to IPUC Data Request 4.

Recordholder: Ted Weston / Kyle Moore
Sponsor: To Be Determined

PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 7 IPUC Data Request 7
Please provide an example of how the Firm Market Price Index is calculated as described on page 4 of the proposed Power Purchase Agreement included in the Application.
Response to IPUC Data Request 7 Please refer to Attachment IPUC 7 which provides an example of the calculation.

Recordholder: Kyle Moore / Dan MacNeil
Sponsor: To Be Determined

PAC-E-20-07 / Rocky Mountain Power
July 14, 2020 IPUC Data Request 8 IPUC Data Request 8
Please explain why the Firm Market Price is calculated differently than in prior PURPA contracts such as in Case Nos. PAC-E-17-08 and PAC-E-17-14. Response to IPUC Data Request 8 The value of energy varies significantly over the course of the broad heavy load
hour (HLH) and light load hour (LLH) periods of each day, in large part as a
result of the increasing penetration of solar resources across the west, which tends to depress prices in daylight hours, most of which are in HLH periods. The highest prices in the day also tend to occur in HLH periods, either in the morning or in the evening when load is relatively high, but solar generation is low or
zero. As a result the, hourly scalars in the Firm Market Price Index provide
a more accurate representation of the avoided cost of energy based on the time of delivery relative to the broad HLH and LLH periods used previously, while retaining the same total value.

Recordholder: Kyle Moore / Dan MacNeil Sponsor: To Be Determined