20230824Application.pdf

Avista Corp.
1411 East Mission P.O. Box 3727
Spokane, Washington 99220-0500
Telephone [phone]
Toll Free 800-727-9170

August 24, 2023

Jan Noriyuki, Secretary
Idaho Public Utilities Commission
11331 W. Chinden Blvd. Bldg. 8, Ste. 201-A
Boise, Idaho 83714

RE: Case No. AVU-E-23-__Avista’s Capacity Deficiency Application

Dear Ms. Noriyuki:

Attached for filing with the Commission is Avista Corporation’s, doing business as Avista
Utilities’, filing in compliance with Order No. 35810, to establish its Capacity Deficiency Period
to be used for the avoided cost calculations within 30 days of filing its Integrated Resource Plan
(IRP). Avista filed its 2023 IRP on June 1, 2023, in Case No. AVU-E-23-05. Avista submitted its
Capacity Deficiency filing on June 20, 2023 but was not received by the Commission. Avista
hereby submits its Capacity Deficiency Period to establish a new deficiency date for the SAR
avoided capacity cost.

Please direct any questions regarding this filing to John Lyons at 509-495-8515.

Sincerely,

/s/Shawn Bonfield

Shawn Bonfield
Sr. Manager of Regulatory Policy & Strategy
Avista Utilities
509-495-2782
[e-mail]

Enclosure
RECEIVED
2023 August 24, PM 5:04
IDAHO PUBLIC
UTILITIES COMMISSION
Case No. AVU-E-23-12

Michael G. Andrea (ISB No. 8308)
Senior Counsel
Avista Corporation
1411 East Mission, MSC-17
Spokane, WA 99202
Phone: [phone]
Facsimile: [phone]
Email: [e-mail]

Attorney for Avista Corporation

BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION

IN THE MATTER OF AVISTA CORPORATION’S) CASE NO. AVU-E-23-____
COMPLIANCE FILING TO UPDATE )
AND ESTABLISH ITS CAPACITY DEFICIENCY )
PERIOD TO BE USED FOR AVOIDED COST )
CALCULATIONS )

AVISTA CORPORATION’S
COMPLIANCE FILING

RECEIVED
2023 August 24, PM 5:04
IDAHO PUBLIC
UTILITIES COMMISSION
12
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I. INTRODUCTION
Avista Corporation, doing business as Avista Utilities (hereinafter Avista or the
Company), at 1411 East Mission Avenue, Spokane, Washington, respectfully submits to
the Idaho Public Utilities Commission (Commission) this filing, in compliance with Order
Nos. 32697 and 32802 in Case No. GNR-E-11-03, and 35810 in Case No. GNR-E-23-01,
seeking approval from the Commission of the capacity deficiency period to be utilized for
the Company’s avoided cost calculations.
Communications in reference to this filing should be addressed to:
Michael G. Andrea (ISB No. 8308) Shawn Bonfield
Senior Counsel Sr. Manager, Regulatory Policy
Avista Corporation Avista Corporation
P.O. Box 3727 P.O. Box 3727
1411 E. Mission Avenue, MSC-17 1411 E. Mission Avenue, MSC-27
Spokane, WA 99220 Spokane, WA 99220-3727
Phone: [phone] Phone: [phone]
Facsimile: [phone] [e-mail]
[e-mail]

II. BACKGROUND
In Order No. 33917 in Case No. PAC-E-17-09, the Commission amended Order
No. 32697 such that utilities were to file “their first capacity deficiency cases after the
Commission has acknowledged their IRP reports.” Order No. 35810 modified the filing
date to “within thirty (30) days of filing its respective IRP.” Avista filed its 2023 Electric
Integrated Resource Plan (IRP) with the Commission on June 1, 2023, thus hereby seeks
approval from the Commission of the capacity deficiency period to be utilized for the
Company’s avoided cost calculations.

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III. CAPACITY DEFICIENCY PERIOD
Avista’s 2023 Electric IRP identifies the first load deficit on January 1, 2034. This
is later than the capacity deficiency date identified in the 2021 IRP because of the addition
of new resources including the extension of the Lancaster Power Purchase Agreement
(PPA) through 2041, long-term capacity and energy from Chelan PUD, Columbia Basin
Hydro, and a 30-year wind PPA. There are also planned upgrades to the Kettle Falls
Generation Station and Post Falls hydroelectric facility. Figures 1 and 2 below show the
net peak position for both the winter and summer peak hour positions (from Figures 4.1
and 4.2 on page 4-5 of the 2023 Electric IRP).

Figure 1: Winter One-Hour Capacity Load & Resources

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Figure 2: Summer One-Hour Capacity Load & Resources

Avista did not include any Colstrip exit scenarios for this capacity deficiency filing
because there is an official exit date for Colstrip at the end of 2025, when ownership of the
resource transfers to NorthWestern Energy.

IV. MODIFIED PROCEDURE
Avista believes that a hearing is not necessary to consider the issues presented
herein and respectfully requests that this Application be processed under Modified
Procedure, i.e., by written submissions rather than by hearing. RP 201 et seq. If the
Commission determines that a technical hearing is necessary, the Company will be ready
to prepare and present its testimony in such hearing.

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V. REQUEST
The Company respectfully requests that the Commission issue an order to approve
of its capacity deficiency period, with a first deficit occurring on January 1, 2034.

DATED at Spokane, Washington, this 24th day of August, 2023.
AVISTA CORPORATION
By /s/ Michael Andrea
Michael G. Andrea
Senior Counsel for
Avista Corp.