20171004Wyoming_WIEC Set 5 1-12.pdf

ROCKY MOUNTAINPOWER
A DIVISION OF PAClFICORP 1407 W North Temple,Suite 330
Salt Lake City,Utah 84116
September 25,2017
Abigail C.Briggerman,#7-5476
Holland &Hart LLP
6380 South Fiddlers Green Circle,Suite 500
Greenwood Village,CO 80111
RE:Wyoming Docket 20000-520-EA-17
WIEC 5 h Set Data Request (1-12)
Please find enclosed Rocky Mountain Power's Responses to WIEC 5th Set Data Requests 5.1-
5.12.Also provided are Attachments WIEC 5.5-1,5.5-3,5.7-3,and 5.9.Provided on the
enclosed Confidential CD are Confidential Attachments WIEC 5.7-1,and 5.7-2.The
Confidential Attachment 5.5-2 will be provided on DVDS and arrive on September 27,2017.
Confidential information is provided sub.ject to the terms and conditions of the protective
agreement in this proceeding.
If you have any questions,please call me at [phone].
Sincerely,
Stacy Splittstoesser,
Manager,Regulation
Enclosures
C.C.:Meridith Bell/WPSC [e-mail](C)
Lori L.Brand/WPSC [e-mail] (W)
John Burbridge/WPSC [e-mail] (W)
Michelle Bohanan/WPSC [e-mail] (W)
Kara Seveland/WPSC [e-mail](W)
Morgan Fish/WPSC mogaan.ñ[e-mail](W)
Dave Walker/WPSC [e-mail] (W)
Perry McCollom/WPSC (W)
Patti Penn/WIEC PP_egn_@hallanhart_co_m (W)
Bob Pomeroy/WIEC rpomeroy hollandhart.com (W)
Thor Nelson/WIEC (W)
Emanuel Cocian/WIEC (W)
Nik Stoffel/WIEC NSStoffel hollandhart.com (C)(W)
Christopher Leger/OCA rjgopher.lege1@wyon(C)
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.1
WIEC Data Request 5.1
Please provide a copy of the System Optimizer User Guide.
Response to WIEC Data Request 5.1
The Planning and Risk (PaR)model and System Optimizer model (SO model)are
proprietary software licensed to the Company by ABB (formerly VENTYX).User
manuals and associated documentation are considered confidential and ABB intellectual
property,and may not be distributed by the Company to third parties under the terms of
the license agreement.A confidentialityagreement between the recipient and ABB must
be in place to receive this information.Please contact Stacy Splittstoesser at (307)632-
2677 to obtain the contact information at ABB for WIEC to execute an agreement
directly with ABB for that information.
Respondent:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.2
WIEC Data Request 5.2
Please provide a copy of the Planning and Risk User Guide.
Response to WIEC Data Request 5.2
Please refer to the Company's response to WIEC Data Request 5.1.
Respondent:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.3
WIEC Data Request 5.3
Please discuss in detail whether the Unit Commitment and Dispatch Algorithm
implemented with the Planning and Risk model is a full chronological commitment that
enforces generationoperating characteristics such as minimum up time,minimum down
time,cold and hot start costs,must run status,etc.
Response to WIEC Data Request 5.3
Yes,the Planning and Risk (PaR)model applies chronological unit commitment and
dispatch that enforces generationoperating characteristics for minimum-upand
minimum-down time,cold and hot start costs,must run -economic -peak commitment,
ramp rates,run-up rates,operating reserves,emission contraints,and transmission
constraints to minimize generationcost.
Because the PaR model is a linear optimization model,unit commitment and dispatch are
not independentalgorithms,but are instead optimized concurrentlywith all other model
capabilities and constraints.
Respondent:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.4
WIEC Data Request 5.4
Please confirm that System Optimizers does not model an electrical network for
transmission lines (like PROMOD IV Nodal does for example)but rather allows for
economic power flows using a "pipeline"transport model with maximum capacity flow
constraints.If the response is anything other than an unqualified confirmation,please
explain in detail.
Response to WIEC Data Request 5.4
Please refer to the Company's response to WIEC Data Request 5.1.The Company is not
familiar with how the PROMOD IV Nodal model treats transmission lines,and therefore
cannot comment on whether the System Optimizer model (SO model)is this type of
model.The SO models a transmission topology with maximum capacity constraints
between transmission areas.
Respondent:Rick Link
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.5
WIEC Data Request 5.5
Please provide a full and unredacted copy of the Company's most recent integrated
resource plan includingall appendices and supporting documentation.
Response to WIEC Data Request 5.5
Please refer to Attachment WIEC 5.5-1,which provides a copy of PacifiCorp's 2017
Integrated Resource Plan (IRP),published on April 4,2017.
Please refer to Confidential Attachment WIEC 5.5-2,which provides a copy of the
confidential data disks that accompanied the 2017 IRP,and Attachment WIEC 5.5-3,
which provides a copy of the public data disk that accompanied the 2017 IRP.
Confidential information is provided subject to the terms and conditions of the protective
agreement in this proceeding.
Respondent:Shay LaBray
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.6
WIEC Data Request 5.6
Are the stochastic simulations performed by the Planning and Risk model performed
using a dependence structure for the random variables modeled?If yes,please provide
that input in an electronic and fully executable format with formulae intact,includingthe
work papers used to estimate the structure.If not,please explain in detail why not.
Response to WIEC Data Request 5.6
The Company assumes that the term "dependence structure"refers to correlation among
stochastic variables.Based on this assumption,the Company responds as follows:
The Company applies correlation assumptions to the stochastic variables.The Company
has applied the same stochastic parameters to its modeling in this proceeding as those
used in the Company's 2017 IntegratedResource Plan (IRP).For a discussion on
stochastic simulations performed by the Planning and Risk (PaR)model,please refer to
PacifiCorp's 2017 IRP Volume I,Chapter 7 (Modeling and Portfolio Evaluation
Approach),pages 156 through 166.
The work papers for the stochastic parameters were provided on the public data disk that
accompanied PacifiCorp's 2017 IRP,specifically folder "Chapters Appendix -
Public\ChaptersAppendix\Appendix H -Stochastic Parameters".Please refer to the
Company's response to WIEC Data Request 5.5,which provides copies of the public and
confidential data disks that support PacifiCorp's 2017 IRP.
Respondent:Rick Link
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
WIEC Data Request 5.7
Please provide the followingSystem Optimizer Inputs and Planning and Risk Inputsin an
electronic and readily manipulable or executable format with all formulae intact:
(a)Please provide a "bubble map"of the PacifiCorp System topography modeled in
System Optimizer and Planning and Risk that indicates groups of resources,loads,
transmission paths &limits,external market hubs,contract delivery locations,etc.If
the system topology changes during the simulation period,please provide the base
assumptions as well as the incremental changes over time and the effective dates of
these changes.
(b)For each "bubble"designated in the response to part a,list the generationresources,
loads,contract delivery and market hub delivery that is connected to the bubble.If
the system topology changes during the simulation period,please provide the base
assumptions as well as the incremental changes over time and the effective dates of
these changes.
(c)For each transmission path connecting "bubbles"please identifythe transmission
flow constraints for each transmission path.If the constraints differ dependent on the
direction of the flow,please provide the flow constraints for each direction with a
legend indicating the flow direction for each constraint.If the flow constraints
change during the simulation period,please provide the base assumptions as well as
the incremental changes over time and the effective dates of these changes.
(d)Provide the hourly load curve for each load indicated in parts a.and b.for all years of
the simulation period.
(e)For each generatingresource modeled,please provide:
i.The name of the generating unit.
ii.The type of resource (i.e.,CCGT,CT,Steam Coal,etc.).
iii.The date the unit was brought online.
iv.The expected retirement date of the generating unit.
v.The maximum stable net generating capacity.
vi.The minimum stable net generating capacity.
vii.The ramp up rate (MW/Hour).
viii.The ramp down rate (MW/Hour).
ix.The minimum up time (Hours).
x.The minimum down time (Hours).
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
xi.Must run status.
xii.Dedicated MW to spinning reserve (MW/Hour).
xiii.Is the unit a quick start unit such that in can contribute to reserves with being
committed?
xiv.Variable Operations &Maintenance cost ($/MWh).
xv.Fixed Operations &Maintenance cost ($/Year).
xvi.Fixed Running Cost ($/Hour).
xvii.Equivalent Forced Outage Rate.
xviii.Mean Time Between Failures.
xix.Mean Time To Repair.
xx.Planned Outage Schedule.
xxi.Any other regularlyscheduled changes to unit capacity or availability (for
example -weekly deratings from midnight to four am on Saturdays to clean a
coal chute).
xxii.Any expected capital investments for each year of the study horizon.
(f)For each thermal generating resource modeled,please provide:
i.Primary Fuel Type.
ii.Primary Fuel Cost ($/MMBtu).
iii.Start Fuel Type.
iv.Start Fuel Cost ($/MMBtu).
v.Cold Start Energy (MMBtu).
vi.Hot Start Energy (MMBtu).
vii.Cold Start Fixed Cost ($).
viii.Number of Hours shut down defining a cold start (Hours).
ix.Shut Down Cost ($).
x.Net Heat Rate in the form of any of the following:
1.Pairs of loading points (MW)and Average Heat Rate (MMBtu/MWh)with
a minimum of 5 pairs of points.
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
2.Pairs of loading points (MW)and Incremental Heat Rate (MMBtu/MWh)
with a minimum of 5 pairs of points.
3.Input output equation:MMBtu =a0 +al*P +a2*P^2 where P is MWh (or
another polynomial equation).
xi.If the unit is a Combined Cycle and the CTs are modeled separately from the
steam turbine,provide an equation (or table with at least 5 data points)relating
heat exhausted (MMBtu)from the CT at loading points from the minimum
stable operating point to the maximum stable operating point as well as an
efficiency table for the steam turbine in the same form as 'x'above.
(g)For each owned renewable resource,please provide:
i.The hourly generationcurve used to model the resource in System Optimizer
and Planning and Risk.
(h)For each purchased power contract,please provide:
i.The inception date of the contract.
ii.The expiration Date of the contract.
iii.The effective dates of the contract.
iv.The hourlyenergy supply curve.
v.The hourlyper unit price of the contract.
vi.Is the contract firm -i.e.,can it count towards capacity and/or reserve
requirements?
vii.Is the contract a must take contract or is the volume dependent on economics
viii.Any fixed demand payments associated with the contract.
(i)For each power sales contract,please provide:
i.The inception date of the contract.
ii.The expiration Date of the contract.
iii.The effective dates of the contract.
iv.The hourly energy supply curve.
v.The hourlyper unit price of the contract.
vi.Is the contract firm?
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
vii.Is the contract a must take contract or is the volume dependent on economics?
viii.Any fixed demand payments associated with the contract.
(j)For each market hub,please provide:
i.The hourly limits on energy purchases.
ii.The hourlylimits on energy sales.
iii.The hourlyper unit price for energy purchases.
iv.The hourlyper unit price for energy sales.
(k)For each new candidate resource,please provide:
i.The capital cost of the resource in $/kW.
ii.A levelized fixed charge rate used.
iii.The operating life assumed.
iv.The economic life assumed.
v.Expected fixed O&M costs in $/kW-year.
vi.Any information from subparts e.thru i.relevant to the resource to model
production costs.
vii.Limitations on when the unit could be constructed or acquired.
viii.Limitations on the number of units that can be constructed per year,over the
study horizon,etc.
ix.Any expected capital investments required by year for all years of the study
horizon.
(1)Please prove all escalation rate and discount rate assumptions.
(m)For the new transmission resources considered,please provide:
i.The capital cost of the asset in $/kW.
ii.The starting and terminal points corresponding to the bubbles identifies in
subpart a.
iii.The length of the line.
iv.The capacity of the line in both directions.
v.The economic life.
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
vi.The operating life.
vii.A levelized fixed charge rate used.
viii.The operating life assumed.
ix.The economic life assumed.
x.Expected fixed O&M costs in $/kw-year.
xi.Limitations on when the line could be constructed or acquired.
xii.Any expected capital investments required by year for all years of the study
horizon.
xiii.The expected per unit impedance and reactance.
xiv.The expended loss factor as a function of line loading.
(n)For the existing transmission paths,please provide:
i.The starting and terminal points corresponding to the bubbles identifies in
subpart a.
ii.The length of the line.
iii.The capacity of the line in both directions.
iv.The economic life.
v.The operating life.
vi.The operating life assumed.
vii.The economic life assumed.
viii.Expected fixed O&M costs in $/kW-year.
ix.Any expected capital investments required by year for all years of the study
horizon.
x.The per unit impedance and reactance.
xi.The loss factor equation as a function of line loading.
Response to WIEC Data Request 5.7
The Company objects to this request as overlybroad,undulyburdensome,and requiring
development of a special study or information not readily available in the format
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
requested or maintained in the ordinary course of business.Without waiving these
objections,the Company responds as follows:
Please refer to Confidential Attachment WIEC 5.7-1,which provides the requested
information relevant to the System Optimizer model (SO),and Confidential Attachment
WIEC 5.7-2,which provides the requested information relevant to the Planning and Risk
(PaR)model.For subparts (e)through (n),these attachments explain where the requested
data is located in files alreadyprovided.The non-Excel input files can be opened and
read in "Notepad"or similar common software.
Please refer to the confidential work papers supporting the Direct Testimony of Company
witness,Rick T.Link.Specifically,please refer to the followingwork papers and
documents:
SO model -input and output files are located in folder "SO Model Inputs-Outputs\
SO Model Inputs-Outputs\Price-emissionsscenarios\Gateway\"
-Within this folder,select the study folder to examine (e.g.,the "RPCC-RPN-
EGI-MN"study).
PaR model -input and output files are located in folder "PaR Inputs-Outputs\PaR
Inputs-Outputs\Price-emissions scenarios\Gateway\"
-Within this folder,select the study folder to examine (e.g.,the "PRPCC-RPN-
EGI-MN"study).
Supporting files -folders "Other Summary Reports"and "Transmission Projects",for
files containing input information regarding the new wind and transmission projects.
Inflation and Discount Rate -folder "Exhibits Figures Tables",specifically the file
"Gateway Results Direct Testimony".Refer to tab "Price -Policy Annual -SO".
Key information regarding resource options available to the SO model capacity
expansion model are provided in PacifiCorp's 2017 IntegratedResource Plan (IRP),
Chapter 6 (Resource Options),specifically Table 6.1 (2017 Supply Side Resource Table).
Please refer to:
http://www.pacificorp.com/content/dam/pacificorp/doc/Energy Sources/Integrated Re:so
urce Plan/2017 IRP/2017 IRP VolumeI IRP Final.pdf
A copy of PacifiCorp's 2017 IRP and the supporting data disks is provided with the
Company's response to WIEC Data Request 5.5.
Coal Master Assumption -2017 IRP Confidential Data Disk 2,folder "Assumptions
+Inputs Conf.zip\Assumptions +Inputs\Master Assumptions,CONF\Vol III RH5a".
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
Loads -\2017 IRP Confidential Data Disk 2,folder "Assumptions +Inputs
Conf.zip\Assumptions +Inputs\Load,CONF".
SO Model
For any specific case folder in "SO Model Inputs-Outputs"(see above),please refer to
Confidential Attachment WIEC 5.7-1,which provides information helpful in locating the
data responsive to subparts (e)through (n):
The SO model assigns all entities (resources,contracts,transmission areas,etc.)an
identification number (ID),and this ID is used to identifythe entities within the input
"gms"files as follows:
-The "Sets.GMS Resource list"tab provides the entity ID for each resource name.
The entityIDs are provided in the Sets.gms file.
-The "Market Names"tab maps market names to market IDs.
-The "Sets.GMS Fuel list"tab maps fuel names to fuel IDs.
-The "Energy Price ID List"tab maps contracts,demand-side management (DSM),
and qualifying facilities (QFs)to their respective IDs.
-For convenience,the Company has broken out the "Capacity Factor ID list"tab,
providing the ID mapping for resources that may be of key interest such as
renewables.
The "GMS file list"tab lists the categories of ".gms"data files and the relevant file
names for reference.
The "WIEC 5.7 (E-N)"tab indicates each part of this data request,and indicates if the
requested data is a SO modeling input,and indicates the file name where the data can
be found.
The "Example -Thermal Inputdata"tab provides an example resource
(CL_JBridgerl),indicating the requested data element and the corresponding value
for that resource.By searching the "Thermal.gms"file (represented in column E),for
a data element named in column A,it is possible to find the data value,which is
displayed in the example in column B.
PaR Model
For any specific case folder in "PaR Inputs-Outputs"(see above),please refer to
Confidential Attachment WIEC 5.7-2,which provides information helpful in locating the
data responsive to subparts (e)through (n):
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
The "PaR Files"tab lists the categories of .Dat data files and relevant file names for
reference.
The "WIEC 5.7 E-N"tab indicates each part of this data request,indicates if the
requested data is a PaR modeling input,and indicates the file name where the data is
provided.
The "Entity Map"tab provides the entity ID for each resource,transmission path,
market,and load area,as well as the associated file type to locate the information.For
example,"CL_Craigl"data is provided in the Thermal.dat file.
The "Example -Thermal Inputdata"tab provides an example resource (Cholla),
indicating the requested data element and the corresponding value for that resource.
By searching the "Thermal.dat"file (represented in column A),for a data element
noted in column G,it is possible to find the data value,which is listed alongside the
data element.For example,Cholla's "CapacityMax"values can be seen in cells
A13:A16,dated by year,and all reporting a value of 387.00 (megawatts (MW)).
Subparts (a)through(n):
(a)Please refer to Attachment WIEC 5.7-3,which provides the 2017 IRP Transmission
Topology.The topology is not created by the SO model or PaR model as a report;this
is manuallycreated and reports the transmission areas (bubbles)by east control area
(ECA)and west control area (WCA),including transmission paths,load location,
thermal generation,and liquid markets.Not listed in the topology are groups of
resources,transmission ratings,or contract delivery locations.The information
regarding resource location is reported in the inputs files for subparts (b)through (n)
below.For the SO model,refer to "Sets.gms",and for the PaR model,refer to
attribute "TransArea"for resource location in the PaR "Entity Map"(see above).
(b)Please refer to the Company's response to subpart (a)above.
(c)Please refer to the Company's responses to subparts (m)and (n)below.
(d)Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps load entities to the
load data files.The SO models in the "SO Model Input-Output"folder groups load
areas and so is not referenced.
(e)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section e.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps thermal and hydro
entities to thermal and hydro data files as described in the "WIEC 5.7 E-N"tab,data
request section e.The specific generationresources are listed in the "Entity Map"tab.
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
(f)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section f.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps thermal entities to
thermal data files as described in the "WIEC 5.7 E-N"tab,data request section f.The
specific generationresources are listed in the "Entity Map"tab.
(g)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section g.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps thermal entities to
thermal data files as described in the "WIEC 5.7 E-N"tab,data request section g.The
specific renewable resources are listed in the "Entity Map"tab.
(h)Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps "Thermal","Existing Block Forward","Fixed Energy",and "Swing"entities to data files as
described in the "WIEC 5.7 E-N"tab,data request section h.The specific power
purchase agreements (PPA)are listed in the "Entity Map"tab.
(i)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section i.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps "Existing Block
Forward"entities to data files as described in the "WIEC 5.7 E-N"tab,data request
section i.The specific sales contracts are listed in the "Entity Map"tab.
(j)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section j.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps "Energy Markets"
entities to data files as described in the "WIEC 5.7 E-N"tab,data request section j.
The specific market hubs are listed in the "Entity Map"tab.
(k)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section k.
Althoughnot asked in the data request,the demand side resources are modeled for
selection in the SO model which information is provided.
Resource additions selected in each study portfolio are an output of the SO model.
These selections are passed into the PaR model.Please refer to Confidential
Attachment WIEC 5.7-2,which provides PaR model information;specifically,refer
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.7
to the "PaR Files"tab,"System Optimizer Plan"file,as indicated in the "WIEC 5.7
E-N tab",data request section k.
(1)Inflation rate 2.22 percent;Discount Rate 6.57 percent.
(m)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section m.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps "Transmission
Link"entities to data files as described in the "WIEC 5.7 E-N"tab,data request
section m.New transmission resources refer to the "AE-WY.To.Brdger"path.
(n)Please refer to Confidential Attachment WIEC 5.7-1,which provides SO model
information as described in the "WIEC 5.7 (E-N)"tab,data request section m.
Please refer to Confidential Attachment WIEC 5.7-2,which provides PaR model
information;specifically,refer to the "PaR Files"tab which maps "Transmission
Link"entities to data files as described in the "WIEC 5.7 E-N"tab,data request
section n.The specific transmission paths are listed in the "Entity Map"tab.
Confidential information is provided subject to the terms and conditions of the protective
agreement in this proceeding.
Respondent:Dan Swan /Randy Baker
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.8
WIEC Data Request 5.8
Please provide an updated version of Table 2 found on Page 35 in the Direct Testimony
of Mr.Link that assumes capital costs for the combined projects increase by 10%,i.e.,
there is a 10%overrun when constructing the combined projects.
Response to WIEC Data Request 5.8
The Company objects to this request on the basis that the Company does not have
custody,possession or control of the information being requested.The request requires
development of a special study or information not maintained in the ordinary course of
business.Without waiving this objection,the Company responds as follows:
The Wyoming Industrial Energy Consumers (WIEC)have the information required to
perform this analysis.Please refer to the confidential work papers provided with the
Direct Testimony of Company witness,Rick T.Link,specifically folder "Other Summary
Reports",the file "Gateway_IRP Data.xlsx".
Real levelized costs,in dollars,for the Aeolus-to-Bridger/Anticlineproject are located in
column Q of the worksheet named "Gateway".
Real levelized costs,in millions of dollars,for the 230 kilovolt (kV)upgrades are
included in column Q of the worksheet named "Summary All Wind".
Real levelized costs,in dollars,for the proxy wind benchmark resources are located in the
column N of the worksheet named "Summary All Wind".
The net present value (NPV)of each of these streams of data calculated over the period
2017 through 2036 assuming a 6.57 percent discount rate represents the present value of
revenue requirements (PVRR)associated with the capital for the combined projects
incorporated into Table 2 of Mr.Link's Direct Testimony.This figure can be multiplied
by 10 percent to capture the incremental increase in cost that would be associated with an
assumed 10 percent cost overrun that can be added as a positive value to all of the
numbers in Table 2 of Mr.Link's Direct Testimony.The value would not change among
the price-policy scenarios.
Respondent:Rick Link
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.9
WIEC Data Request 5.9
Please provide a probability distribution of net capacity factor for the wind site.If the
Company did not assess the risk of the wind blowing via probability distribution,please
provide the risk assessment for the wind site analyzed by the Company.If this
assessment does not exist,please discuss in detail whythe Company did not assess the
risk of the wind.
Response to WIEC Data Request 5.9
The Company objects to this request on the basis that it does not have custody,
possession or control of the requested information.Specifically,it does not have a
probability distribution of net capacity factor for the various wind sites.This assessment
will be performed once the wind turbine equipment supply has been secured and the wind
turbine layout has been finalized.
Please refer to Attachment WIEC 5.9,which summarizes the annual capacity factors at
the Company's existing wind projects.The Company is aware of variability in capacity
factors for Wyoming wind resources,as demonstrated in the operational history of its
existing Wyoming wind projects.
Respondent:Ian Andrews
Witness:Chad Teply
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.10
WIEC Data Request 5.10
Please provide the break even net capacity factor for the combined projects under the
medium gas zero CO2 and medium gas medium CO2 cases.
Response to WIEC Data Request 5.10
The Company objects to this request on the basis that it does not have custody,
possession or control of the requested information.The request requires development of
a special study or information not maintained in the ordinary course of business.
Respondent:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,20 17
WIEC Data Request 5.11
WIEC Data Request 5.11
Please provide the break even percentage increase in capital costs for the combined
projects under the medium gas zero CO2 and medium gas medium CO2 cases.
Response to WIEC Data Request 5.11
The Company objects to this request on the basis that it does not have custody,
possession or control of the requested information.The request requires development of
a special study or information not maintained in the ordinary course of business.Without
waiving this objection,the Company responds as follows:
The Wyoming Industrial Energy Consumers'(WIEC)can estimate the level of capital
costs that would cause the Combined Projects to achieve break-even economics using
data contained in the Direct Testimony of Company witness,Rick T.Link,specifically
Exhibit RMP (RTL-5).This exhibit includes these line item "Transmission Project
Capital Recovery"plus "Incremental Transmission Revenue"+"New Wind Capital
Recovery"under Project Net Costs for each price-policy scenario.The present value of
revenue requirements differential (PVRR(d))for these line items can be multipliedby a
percentage that offsets the PVRR(d)for the "Net (Benefit)/Cost"line item for any given
price-policy scenario.
For instance,in the medium natural gas and medium carbon dioxide (CO2)price scenario,
the PVRR(d)for "Transmission Project Capital Recovery"plus "Incremental
Transmission Revenue"+"New Wind Capital Recovery"is $1,959 million,which
reflects the value of capital cost recovery for transmission and new wind.The PVRR(d)
for the "Net (Benefit)/Cost"line item is $137 million.If the PVRR(d)for the combined
transmission plus new wind line item is multipliedby approximately 107 percent,the
capital cost recovery for transmission and new wind line items would drop by
approximately $137 million,thereby causing the PVRR(d)for the "Net (Benefit)/Cost"
line item to be zero (i.e.,break-even economics).
The capital costs for transmission,$717.5 million,and new wind,$1,369 million,are
provided in Mr.Link's Direct Testimony,specifically Confidential Exhibit RMP (RTL-
1)and total $2,086.5 million.Multiplyingthe $2,086.5 by 107 percent would equal the
capital investment of $2,232.6 million for the breakeven.
Respondent:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
September 25,2017
WIEC Data Request 5.12
WIEC Data Request 5.12
Please provide System Optimizer outputs for each of the scenarios and sensitivities
studied in a format to those filed by PacifiCorp on its IRP Support Webpage athttpfw_wwg.com es/irp_/irggup_porthtrn_l.If possible please provide the outputs
in both a present value and nominal dollars.If this is not available,please provide the
discount rate assumptions necessary to convert the present value to nominal.For
reference purposes,the three files that show the system optimizer outputs similar to those
we are seeking are:
(a)http://www.pacificorp.com/content/dam/pacificorp/doc/Energy Sources/Integrated Ressum-2015IRP RH1-SORepartPa_ck_age-03162015.xlsx
(b)http;//www.pacificorp.com/content/dam/pacificorp/doc/Enerav Sources/Integrated R
esource Plan/2015IRP/PacifiCorp-20l5IRP RH2-SOReportPackage-03162015.xlsx
(c)hy:m c_ontentitanciñegg/_dodEgergyjoure ad R
esource Plan/2015IRP/JPacifrC_orp-2015]IR_P_SensitivityiO_R._ep_o_rt_ac_ka_ge-
03162015.xlsx
Response to WIEC Data Request 5.12
Please refer to the confidential work papers supporting the direct testimony of Company
witness,Rick T.Link,specifically the folder "SO Model Summary Reports"for the
System Optimizer model (SO model)study results,and the folder "SO Model Inputs-
Outputs"for the SO model studies input and output files.PacifiCorp used a discount rate
of 6.57 percent in present-value calculations used in its economic analysis.
Respondent:Dan Swan
Witness:Rick Link