20230405PAC to CEO 1-3.pdf

1407 W North Temple, Suite 330 Salt Lake City, Utah 84116
April 5, 2023 Kelsey Jae (ISB No. 7899) Law for Conscious Leadership 920 N. Clover Dr.
Boise, ID 83703 [e-mail]
Attorney for the Clean Energy Opportunities of Idaho
RE: ID PAC-E-22-15 CEO Set 1 (1-3) Please find enclosed Rocky Mountain Power’s Responses to CEO 1st Set Data Requests 1-3. Also provided are Attachments CEO 2 and 3.
If you have any questions, please feel free to call me at [phone]. Sincerely, ____/s/____ Mark Alder Manager, Regulation
Enclosures
C.c.: Jan Noriyuki/IPUC [e-mail] (C) Claire Sharp/IPUC [e-mail] Mike Heckler/CEO [e-mail] Courtney White/CEO [e-mail] Marie Callaway Kellner/ICL [e-mail] (C) F. Diego Rivas/NWEC [e-mail] (C)

RECEIVED
Wednesday, April 5, 2023 3:24:54 PM
IDAHO PUBLIC
UTILITIES COMMISSION
PAC-E-22-15 / Rocky Mountain Power April 5, 2023 CEO Data Request 1
CEO Data Request 1 The Company's application describes on page 4 that a customer’s decision to opt into the Schedule 36 time of use program should be motivated by “a desire to shift
load to lower cost times”. What are the potential benefits to the public interest that
may result from customers shifting load into lower cost times? Response to CEO Data Request 1

The potential benefits to the public interest from customers shifting load to lower cost times would be the reductions in net power costs (NPC). Recordholder: Robert M. Meredith

Sponsor: Robert M. Meredith

PAC-E-22-15 / Rocky Mountain Power April 5, 2023 CEO Data Request 2
CEO Data Request 2 On page 14 of the testimony provided by Robert Meredith, Mr. Meredith explains that the on-/off peak periods proposed for future use in Schedule 36 are based on
an earlier review of times when “the Energy Imbalance Market (EIM) pricing was
the highest”. In PAC-E-21-07, Exhibit 54, PacifiCorp presented average Energy Imbalance
Market Pricing weighted by PacifiCorp’s Hourly Loads for the time period of
three years ending December 31, 2020. Please provide, in Excel format, the same information provided in that Exhibit 54 but based upon EIM prices and PacifiCorp load data for the year ending December 31, 2022. Response to CEO Data Request 2

Please refer to Attachment CEO 2 which provides an updated version of Exhibit 54 to the direct testimony of Company witness, Robert M. Meredith in Case PAC-E-21-07, based upon Energy Imbalance Market (EIM) prices and PacifiCorp load
data from January 1, 2018 through June 30, 2022. Note: the Company does not
have the data from July 1, 2022 through December 31 2022 readily available at this time. Recordholder: James Zhang

Sponsor: Robert M. Meredith
PAC-E-22-15 / Rocky Mountain Power April 5, 2023 CEO Data Request 3
CEO Data Request 3 For each month during the years 2018 through 2022 inclusive, please provide, in Excel format, the total dollar amount billed monthly for energy charges and
customer service charges under the following four conditions:
1. The amounts actually billed to Schedule 1 customers during each of those 60 months.

2. The amounts those Schedule 1 customers would have been billed under the proposed “year 5” rates where the summer season energy charge is 8.6574 cents/kWh, the winter season energy charge is 7.2145 cents/kWh, and the customer service charge is $29.25/month.
3. The amounts actually billed to Schedule 36 customers during those months.
4. To the extent the historic hourly Schedule 36 customer load data is available, the amounts those Schedule 36 customers would have been billed by applying
the proposed “year 5” rates with seasonal and on-peak/off-peak durations
updated as proposed and where the Summer season on peak energy charge is 14.7738 cents/kWh, the Summer season off-peak energy charge is 4.7423 cents/kWh, the Winter season on-peak energy charge is 12.6572 cents/kWh, the Winter season off-peak energy charge is 4.3600 cents/kWh, and the Customer service charge is $29.25/month.
Response to CEO Data Request 3 Please refer to Attachment CEO 3 which provides the monthly bills, energy usage
kilowatt-hours (kWh), customer service charges, energy charges and total charges
based on actually billed, present rates and proposed Year 5 rates respectively. Year 5 charges for Schedule 36 are calculated based on the seasonal average on-peak and off-peak ratios from the Schedule 36 customer load profile and the proposed summer and winter season and time of use.

Recordholder: James Zhang Sponsor: Robert M. Meredith