20210511Reply Comments.pdf

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Avista Corp.
l4l I EastMssion P.O.Box3727
Spokane. Washingto n 99220 -0500
Telephone [phone]
Toll Free 800-727-9170
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LI1f f'tMay 11,2021 ,:)
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Jan Noriyuki, Secretary
Idaho Public Utilities Commission
I 13 3 I W. Chinden Blvd. Bldg. 8, Ste. 201 -A
Boise,Idaho 83714
RE: CaseNo.AW-E-20-1l CapacityDeficiencyPeriodfortheAvoidedCostCalculations
DearMs. Noriyuki:
Avista Corporation dba Avista Utilities (Avista or the Company) provides the following reply
comments to Commission Staff's letter issued April 7 ,2021in Case No. AVU-E-20-I1, relating
to the Company'scapacity deficiencyperiodusodin determiningavoidedcostrates. In compliance
with OrderNo. 34981 in Case No. AVU-E-20-I l, Staff updated the Surrogate AvoidedResource
(SAR) model and re-calculated avoided cost rates, using the first capacity deficiency dab of
November 2026 approved in the Order. Avista has reviewed the updated SAR model and agree
the calculations were made corroctly.
PleasedirectanyquestionsregardingthisfilingtoJohnLyons at509-495-8515.
Sincerely,
lolsdarrn ?or4kld
Shawn Bonfield
Sr. Managerof Regulatory Policy & Statery
AvistaUtilities
509-495-2782
shawn.bonfield vistacom-com