20230515Comments Replacement Page.pdf

Idaho Public Utilities Commission dLittle,Governor
P.O.Box 83720,Boise,ID 837204074 EricAnderson,PresidentJohnRHammond,Jr.,Commissioner
E ard edge,commissioner
May 15,2023
Jan Noriyuki
Idaho Public Utilities Commission
P.O.Box 83720
Boise,ID 83720
Dear Ms.Noriyuki:
The Staff of the Idaho Public Utilities Commission identified a typographical error inStaffCommentsfiledonMay10,2023 in Case No.PAC-E-23-09.The comma placement in thetableonpage9makesthetotalsmoredifficulttoread.Therefore,Staff is filing a Replacement
Page to the May 10,2023 Staff Comments which corrects the typographical error.
Sincerely,
Terri Carlock
Administrator Utilities Commission
11331 W.Chinden Blvd.,Building 8 Suite 201-A,Boise ID 83714
Telephone:[phone] Facsimile:[phone]
1.A comparison of costs used to determine NPC in base rates to actual cost broken
down by sources the Company uses to meet load;
2.A comparison of the amount of generation from each source used to determine
NPC in base rates versus the amount of generation used to meet load during the
ECAM year;
3.A comparison of the actual monthlyamounts of coal generationacross the 2022
ECAM year to historical amounts;and
4.Information contained in discovery and from other sources to identify the root
cause leading to lack of coal generation.
Staff compared 2022 actual NPC by FERC account/resource type to NPC embedded in
base rates,as shown in Table No.2 below.It illustrates the impact of actual NPC on the deferral
amount with positive amounts showing an increase in the deferral and negative amounts showing
a decrease.
Table No.2:
Adjusted Impact to PercentageSourceBaseNPC4
Actual NPC Deferral Impact
Wholesale Sales (revenue)($285,405,303)($463,692,258)$178,286,9556 38.4%
Purchased Power /Net $942,771,832 $844,451,804 $98,320,028 11.6%Interchange (cost)
Wheeling (cost)$164,088,727 $154,137,105 $9,951,622 6.5%
Coal (cost)$581,031,513 $599,876,421 ($18,844,908)-3.1%
Gas (cost)$610,525,466 $228,727,764 $381,797,702 166.9%
Other -Primarily Wind $5,382,209 $4,416,584 $965,625 21.9%(cost)
Total System $2,018,394,444 $1,367,917,419 $650,477,024 47.6%
Examining Table No.2,the largest impacts to the deferral amount in order of magnitude
is the increase in natural gas generation,a reduction in the amount of wholesale sales revenue,
and an increase in purchased power expense.However,there is a significant reduction in the
4 Referenced to Case No.PAC-E-21-07 PacifiCorp -General Rate Case.
6 The positive amount for the wholesale sales base-to-actual difference represents a reduction in revenue from thetotalactualamountofsalesrelativetothebaseamounts;whereas positive amounts for base-to-actual cost
components represent increases in actual cost as compared to base amounts.
STAFF COMMENTS 9 (REPLACEMENTPAGE)MAY 15,2023
CERTIFICATE OF SERVICE
I HEREBY CERTIFY THAT I HAVE THIS 15th DAY OF MAY 2023,
SERVED THE FOREGOING REPLACEMENT PAGE 9 TO COMMENTS OF THE
COMMISSION STAFF,IN CASE NO.PAC-E-23-09,BY E-MAILING A COPY
THEREOF,TO THE FOLLOWING:
MARK ALDER DATA REQUEST RESPONSE CENTER
JOE DALLAS E-MAIL ONLY:
ROCKY MOUNTAIN POWER [e-mail]
1407 WEST NORTH TEMPLE STE 330
SALT LAKE CITY UT 84116
E-MAIL:[e-mail]
[e-mail]
S CRETARY
CERTIFICATE OF SERVICE