20210412PAC to Staff 1-5.pdf

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Apil 12,2021
Jan Noriyuki
Idaho Public Utilities Commission
472W. Washington
Boise, ID 83702-5918
ian.noriyuki@puc. idaho. sov (C)
RE: ID PAC-E-21-06
IPUC Set I (l-5)
Please furd enclosed Rocky Mountain Power's Responses to IPUC ltt Set Data Requests l-5.
If you have any questions, please feel free to call me at [phone]
Sincerely,
--!sl-J. Ted Weston
Manager, Regulation
Enclosures
C.c. : Bryan Case/Fall River Electic [e-mail]
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1407 W North Temple, Suite 330
Salt Lake City, Utah 84116
PAC-E-21-06 / Rocky Mountain Power
April l2,2Wl
IPUC DataRequest 1
IPUC Data Request I
Please explain how the Ma<imum Delivery Rate of 2.0 MWh listed in Exhibit A
is determined.
Response to IPUC Data Request I
Referencing the power purchase agreement (PPA) between Fall River Rural
Electric Cooperative, [nc., and PacifiCorp for the Chester Diversion Hydroelecfiic
Project dated February 26,2021, specifically Exhibit A @xpected Monthly Net
Output):
The "Maximum Delivery Rate" as listed in Exhibit A should state '02.0 IvfW'"
rather than"2.0 MWh". 2 megawatts (MW) is the nameplate capacity of the unit
and represents the maximum MW the facility is capable of producing in one hour.
Recordholder:Kyle Moore
To Be DeterminedSponsor:
PAC-E-21-06 / Rocky Mountain Power
April12,2021
IPUC DataRequest 2
IPUC Data Request 2
Page 15 and Exhibit A of the Power Purchase Agreement (PPA) list Expected
Monthly Net Output, where the output in January (10,000 kwh) is significantly
lower than that in February (170,000lnvh) or in December (175,200 kwh).Please
explain the difference.
Response to IPUC Data Reque.st 2
Referencing the power purchase agreement (PPA) between Fall River Rural
Electic Cooperative, Inc., and PacifiCorp for the Chester Diversion Hydroelectic
Project dated February 26,2021, specifically the "Energy Delivery Schedule" on
page 15, and Exhibit A (Expected Monthly Net Output):
The monthly generation amounts shown in Exhibit A were provided by the
project owner and represents its forecast of energy each month. The Company
does not have an explanation for the monthly differentials, but typically changes
in monthly production are the result of expected water flow variability at the
facility.
Recordholder:Kyle Moore
To Be DeterminedSponsor:
PAC-E-21-06 / Rocky Mountain Power
April 12,2021
IPUC Data Request 3
IPUC Data Request 3
Page l5 and Exhibit A of the PPA and Page 3 of the Application show that the
expected annual generation amount is 6,580 MWh. However, Page 3 of the PPA
states that Expected Net Output is 5,481,400 kwh. Please reconcile the two
numbers and provide the expected annual generation amount for the facility. If the
January estimate needs to be corrected, please provide the updated expected
annual generation amount.
Response to IPUC Data Request 3
Referencing the power purchase agreement (PPA) between Fall River Rural
Electric Cooperative, Inc., and PacifiCorp for the Chester Diversion Hydroelectric
Project dated February 26,2021, specifically the "Energy Delivery Schedule" on
page 15, Exhibit A (Expected Monthly Net Output) and the Application, page 3,
as well as the PPA, "Expected Net Outpuf'on page 3:
The "Total Energy (kwh)" for the month of June, as listed in Exhibit A,
incorrectly includes a period instead of a comma, while the figure is quoted as
"1,100.000", it should be "1,100,000" as this is the sum of the "On-Peak Energy
(kwh)' and the "Off-Peak Energy (kwh)" listed for the month of June. Changing
the "Total Energy (kWh)" in June, as described above, increases the sum of the
monthly "Total Energy (kwh)" figures in Exhibit A from 5,481,400 kilowatt-
hours (kwh) to 6,580,300 kwh.
Recordholder:Kyle Moore
To Be DeterminedSponsor:
PAC-E-21-06 / Rocky Mountain Power
April12,2021
IPUC Data Request 4
IPUC Data Request 4
The Company listed two mechanisms for updating the estimated amount of
generation in the PPA. The first mechanism is detailed on Page 3 in the definition
for "Expected Net Output" based on the "Contract Year". The second mechanism
is detailed on Page 15, Section 4.9.1, which allows the QF to update changes to
monthly estimates at least l0 days in advance of the delivery month. What is the
purpose of each of the two mechanisms and explain why each of these
mechanisms is necessary?
Response to IPUC Data Request 4
Referencing the power purchase agreement (PPA) between Fall River Rural
Electric Cooperative, Inc., and PacifiCorp for the Chester Diversion Hydroelecfric
Project dated February 26,2021, specifically the "Expected Net Output" on page
3, and Section 4.9 (Energy Delivery Schedule), subsection 4.9.1 on page 15:
The "Expected Net Output" definition is the initial forecast of generation, meant
to inform expectations of generation at the time of contracting. This forecast is not
updated after contracting. The forecast in Section 4.9.1 is meant to provide the
qualifying facility (QF) the opportunity to further refine its forecast up to l0 days
in advance of each month. This provides the QF the opportunity to best forecast
generation for purposes of the conforming/non-conforming energy payment, and
provides the utility with best available forecast data from which to plan its system.
Recordholder:Kyle Moore
To Be DeterminedSponsor:
PAC-E-21-06 / Rocky Mountain Power
Apil l2,2Wl
IPUC Data Request 5
IPUC Data Request 5
Page20 of the PPA requires the QF to provide a 12X24 generation profile. Please
explain why this provision is a requirement.
Response to IPUC Data Request 5
Referencing the power purchase agreement (PPA) between Fall River Rural
Elecfic Cooperative, Inc., and PacifiCorp for the Chester Diversion Hydroelectic
Project dated February 26,2021, specifically page20:
The Company uses a 12v24 generation profile to enter forecasted generation into
the Company's tading/operating systems to estimate hourly generation of the
qualiffing facility (QF) estimated on a month-by-month basis.
Recordholder:Kyle Moore
To Be DeterminedSponsor: