20240102AVU to Staff 20-22.pdf

AVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION

JURISDICTION: IDAHO DATE PREPARED: 01/02/2024 CASE NO: AVU-E-23-16 WITNESS: N/A REQUESTER: IPUC RESPONDER: Rendall Farley TYPE: Production Request DEPARTMENT: Electric Transportation
REQUEST NO.: Staff-020 TELEPHONE: [phone] REQUEST:
In reference to the Company's response to Production Request No. 12, please provide documentation for the support of the numbers in "Table 1 - Example Monthly DCFC Operator Costs and Revenue in Idaho on Avista's Rate Schedule 11". In particular, please provide support for how the following numbers were reached:
a. 30, the number of charging sessions per month the business will likely have;
b. 900 kWh, the amount of energy consumption; c. 180 kW, the max electricity power demand for the DCFC site; d. $1,292.15, the total monthly operating costs; and e. $0.45/kWh, the usage rate fee.
RESPONSE: The example represents a common DCFC site that may be expected in Idaho over the next several years, with estimates of monthly DCFC operational parameters and resulting operator costs and
revenue. This example includes DCFC equipment with 180 kW maximum output and experiences lower to moderate utilization. a. This is an average of one charge session per day. In lower adoption areas, the average may be
much lower at least initially and may grow over time to several sessions per day.1
b. 900 kWh is based on an estimate of 30 charge sessions per month, with each charge session providing 30 kWh of energy. Several months of operation at two sites in Idaho served by the Company, with comparable charging output near 180kW, over several months showed an average
of 928 kW and 629 kW per month respectively.
c. 150 to 180 kW is the power output of common DCFC available today.2 This is a common example that is expected, and similar to several DCFC sites served by the Company in Idaho and in Washington.

e. $1,292.15 is the sum of the electricity bill components and an estimated $150 in other operational costs such as network management and communication services and equipment maintenance.

1 “Electricity Cost for Electric Vehicle Fast Charging.” National Renewable Energy Laboratory. Accessible at: https://www.nrel.gov/docs/fy19osti/72326.pdf 2 For example, see the ABB Terra product line accessible at: https://search.abb.com/library/Download.aspx?DocumentID=9AKK107991A4246&DocumentPartId=

RECEIVED
Tuesday, January 2, 2024 1:17:30 PM
IDAHO PUBLIC
UTILITIES COMMISSION
f. $0.45/kWh is an expected amount that is within the range of DCFC user fees currently applied at DCFC in the region.3 Below this value, profitable operation is unlikely.4 Above this value, the
fee is not competitive with other DCFC or gasoline alternatives.

3 See site details for DCFC shown on plugshare.com, accessible at: https://www.plugshare.com/ 4 “Can public EV fast-charging stations be profitable in the United States?” McKinsey & Company (2023).
Accessible at: https://www.mckinsey.com/features/mckinsey-center-for-future-mobility/our-insights/can-public-ev-fast-charging-st
ations-be-profitable-in-the-united-states#/
AVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION

JURISDICTION: IDAHO DATE PREPARED: 01/02/2024 CASE NO: AVU-E-23-16 WITNESS: N/A REQUESTER: IPUC RESPONDER: Paul Kimball TYPE: Production Request DEPARTMENT: Regulatory Affairs
REQUEST NO.: Staff-021 TELEPHONE: [phone] REQUEST:
Referencing the Company's response to Production Request No. 1, current customers have a much higher usage than the example in Table 1. Please show the difference between schedule 11 and schedule 23 for Customer A in December 2022.
RESPONSE: Please see Staff_PR_021 Attachment A.
AVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION

JURISDICTION: IDAHO DATE PREPARED: 01/02/2024 CASE NO: AVU-E-23-16 WITNESS: N/A REQUESTER: IPUC RESPONDER: Lisa Garrett TYPE: Production Request DEPARTMENT: Products & Services
REQUEST NO.: Staff-022 TELEPHONE: [phone] REQUEST: Please provide all actual usage data for DCFC customers in 2023. Please identify the five DCFC
customers (i.e. Customer A, B, C, D, E) consistent with the Company's response to Staff's Production Request No. 1 and provide usage data in the same format. RESPONSE:

Please see Avista's response Staff_PR_022C, which contains TRADE SECRET, PROPRIETARY or CONFIDENTIAL information and exempt from public view and is separately filed under IDAPA 31.01.01, Rule 067 and 233, and Section 9-340D, Idaho Code.
Please see table below for usage data for DCFC customers in 2023. Data is summarized by
customer, by month. Customer A:
End Meter Read Date kWh KW

Customer B: End Meter Read Date kWh KW
Jul 2023 400 153.5
Aug 2023 800 185.9
Sep 2023 2,100 185.9
Oct 2023 800 158.8
Nov 2023 900 156.5
Dec 2023 600 123.5 Customer C:

End Meter Read Date kWh KW

Customer D: Electric service began June 1, 2023.

End Meter Read Date kWh KW
Customer E:
Electric service began July 24, 2023.

End Meter Read Date kWh KW