20220222Application.pdf

Y ROCKY MOUNTAIN
POI'I'ER
iiltliVlil 1407 W. North Temple, Suite 330
Salt Lake City, Utah 841l6
:, 'Il? ii Pl+ t2: 52
Febuary 22,2022
VU ELECTRONIIC DELIWRY
Idaho Public Utilities Commission
I l33l W. Chinden Blvd.
Building 8 Suite 20lA
Boise, ID 83714
Attn: Jan Noriyuki
Commission Secretary
RE:CASE NO. PAC.E-22-04
IN THE MATTER OF THE APPLICATION OF ROCKY MOUNTAIN POWER
TO UPDATE ELECTRIC SERVICE REGULATION NO. 13 . CURTAILMENT
PLAI\ FOR ELECTRIC ENERGY
Please find enclosed Rocky Mountain Power's Application requesting authorization to update
Electric Service Regulation No. 13 - Curtailment Plan for Electric Energy.
Informal questions related to this matter may be directed to Ted Weston at [phone].
Sincerely,
r
NS^"*c
Joelle Steward
SVP, Regulation, Customer & Community Solutions
Enclosures
Emily Wegener, (ISB#l l6l4)
Rocky Mountain Power
1407 West North Temple, Suite 320
Salt Lake City, Utah 841l6
Telephone: [phone]
Email : em i I y.we ge ner @pacificorp.com
Attorneyfor Rocky Mountain Power
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION
OF ROCKY MOUNTAIN POWER TO
UPDATE ELECTRIC SERVICE
REGULATION NO. 13. CURTAILMENT
PLAI\ FOR ELECTRIC ENERGY
CASE NO. PAC.E-22-04
APPLICATION
PacifiCorp, d.b.a. Rocky Mountain Power ("Rocky Mountain Power" or "Company")
in accordance with RP 052, hereby petitions the Idaho Public Utilities Commission (the
"Commission") for authorization to update Electric Service Regulation No. 13, Curtailment
Plan for Electric Energy ("Curtailment Plan"). In support ofthis Application, Rocky Mountain
Power states:
L Rocky Mountain Power is authorized to do business in the state of Idaho as a
public utility providing retail electric service to approximately 86,500 customers. Rocky
Mountain Power is a public utility subject to the jurisdiction of the Commission pursuant to
Idaho Code $ 6l-129.
2. This Application is filed pursuant to Idaho Code $ 6l-307.In particular, Idaho
Code $ 6l-307 requires Commission approval prior to any change in rates, services, and
regulations. It mandates a minimum thirty (30) day notice to the Commission and the public
along with a proposed date when the utility would like the change to be effective.
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APPLICATION OF
ROCKY MOUNTATN POWER
Page I
BACKGROUND
3. In November 1993 the Commission ordered the electric service suppliers in the
state of Idaho to adopt provisions relating to electric service curtailment during periods of
prolonged energy shortages.lThe provisions were based on the Regional Curtailment Plan for
Electric Energy, designed to deal with long-tenn energy shortages and to promote curtailment
uniformity among the four Pacific Northwest states of Oregon, Washington, Idaho, and
Montana.
4. In June 2015 the Company filed to revise Electric Service
Regulation No. 13 ("Regulation 13").2 The Company proposed to modiff the Curtailment Plan
to: (a) include new provisions for load reduction with demand-side management ("DSM") and
emergency load shed groups, (b) remove financial penalties that were in the original plan, and
(c) clarify the types of entities that can initiate load curtailment. The revised Curtailment Plan
also covered a broader range of events that could precipitate load curtailment activities.
5. The revisions incorporated several new curtailment sources, including DSM
capabilities and interruptible customer load shed programs. The modifications also made use
of and described block rotation, which provided for two (2) hour rotational curtailments used
in scheduled combinations until the necessary load curtailment was achieved. Block rotation
provides equitable treatment to customers as the combination of blocks curtailed is dependent
on the day of the week and time of day the curtailment is required.
,Case No. GNR-E-93-2, Order No. 25259 - Curtailment Plan
2 Case No. PAC-E-15- 10 - In the Matter of the Application of RoclE Mountain Power to Update Electic Service Regulation No. l3
Cwailment Planfor Electric Energt
APPLICATION OF
ROCKY MOLINTAIN POWER
Page2
The plan also included another resource; emergency load shed groups, predetermined localized
groups that are utilized for situations where load reductions might be required for specific high
load areas.
MODIFICATIONS TO THE CURTAILMENT PLAN
6. Regulation No. l3 summarizes the Company's curtailment plan to temporarily
intemrpt electric service to its customers during system emergencies and power shortages.
It is intended to provide equitable procedures for the curtailment of power that minimize
adverse impacts to essential services and customers while maintaining overall system
reliability.
7. The Company's Curtailment Plan contains five curtailment stages.
These curtailment stages are associated with increasing energy deficits. The circumstances
necessitating a reduction in the demand or consumption of electricity in the short term will
normally require that immediate emergency action is taken, sometimes without waming.
Sudden equipment outages or loss of generation could potentially lead directly to any
curtailment stage withoutpriornotice orprogression of the stages described in Section III of
the Curtailment Plan.
8. If actions are necessary, then to the extent permitted by the operating
characteristics of the electrical system, the Company will perform such actions so that
intemrption, curtailment, or flucfuation of service to customers will be accomplished
sequentially, unless it is necessary in the sole judgment of the Company, or if required by the
RC West Regional Reliability Coordinator to vary said sequence in order to protect system
performance, inte grity, rel iabi I ity, or stab i lity.
9. Currently, Stage I of the Curtailment Plan involves mandatory curtailment
APPLICATION OF
ROCKY MOUNTAIN POWER
Page 3
through activation of DSM demand response programs and intemrptible customers with
allowable curtailment allotments. This includes curtailing customers participating in the Idaho
Irrigation Load Control program and a large industrial customer. Stage I is the first step when
the Company needs to reduce load on the system.
10. Prior to January 1,2022, the Company had a contract with a large intemrptible
customer that included a system emergency clause which allowed the Company during
emergency load curtailment events to curtail the supply of electricity to this customer under
Stage I of the Curtailment Plan. The customer received a system integrity credit on its monthly
bill as compensation for this system emergency clause.
I l. During calendar year 2021 the Company negotiated a new contract with this
large intemrptible customer. During these negotiations the parties were not able to reach an
agreement on the value ofthe system integrity clause, so a new contract agreement was reached
without the system integrity clause.
12. On September 16, 2021, the Company filed3 a new contract with the large
industrial customer resolving the curtailment terms of this intemrptible customer's energy
service agreement. The new contract does not include a system integrity clause and therefore
the Stage I mandatory curtailment is no longer applicable to them.
13. The primary purpose of this Application is to update the Curtailment Plan to
remove the intemrptible load from the Stage I Mandatory curtailment option.
3 Case No. PAC-E-21-07 - In the Mauer of the Application of Roctcy Mountain Patterfor Authority to Increase lrs Rates and Charges in
Idaho and Approval of Proposed Electric Service Schedules and Regulations.
APPLICATION OF
ROCKY MOI.JNTAIN POWER
Page 4
Specifically, the Curtailment Plan has been revised to remove a reference to "intemrptible
customer load shed" in Stage I of the plan and a section subtitled "Intemrptible Loads" under
Section IV of the Curtailment Plan.
Additional edits were made to the plan including replacing the reference to the Peak Regional
Reliability Coordinator with the RC West Regional Reliability Coordinator, correcting the
reference to the Idaho Public Utilities Commission, and other minor edits.
14. The Company is proposing these changes to the Curtailment Plan to avoid any
confusion and better align the plan with the Company's current contractual agreements and
operating procedures. Clean and legislative copies of the Curtailment Plan are provided as
Attachment No. I to this Application.
COMMUMCATIONS
14. Communications regarding this Application should be addressed to:
Ted Weston
1407 W. North Temple, Suite 330
Salt Lake city, utah 84116
Telephone : [phone]
Email : ted.weston@pac ifi corp.com
Emily Wegener
1407 W. North Temple, Suite 320
Salt Lake City, Utah 84116
Telephone : [phone]
Email: [e-mail]
In addition, the Company respectfully requests that all data requests regarding this matter be
APPLICATION OF
ROCKY MOI.]NTAIN POWER
Page 5
addressed to one or more of the following:
By e-mail (preferred)
By regular mail
datare$est@frac ifi com.com
Data Request Response Center
PacifiCorp
825 NE Multnomah, Suite 2000
Portland, OR 97232
MODIFIED PROCEDURE
16. The Company believes that consideration of the proposgls contained in this
Application do not require an evidentiary proceeding, and accordingly requests that this
Application be processed under modified procedure pursuant to RP 201-204, which allows for
consideration of these issues by written submissions rather than by an evidentiary hearing. If
however, the Commission determines that an evidentiary proceeding is required the Company
stands ready to provide supporting testimony.
CONCLUSION
WHEREFORE, Rocky Mountain Power respectfully requests that the Commission
issue an Order: l) authorizing that this proceeding be processed under modified procedure and
2) approving this Application to update Electric Regulation No. 13 - Curtailment Plan for
Electric Energy as described herein with a June l, 2022, effective date.
DATED this22il day of February 2022.
Respectfu I ly submitted,
By ,,,4 Q&"rp"^,,/a
Emily Wegener
Attomey for Rocky Mountain Power
APPLICATION OF
ROCKY MOI.JNTAIN POWER
Page 6
Attachment No. 1
Electric Service Regulation No. 13
Curtailment Plan for Electric Energy
ROCKY MOUNTAIN
HP}YHF."-,
LP.U.C. No.1
Sirstsecond Revision of Sheet No. 13R1
Cancelins M Sheet No. 13R1
ELECTRIC SERVICE REGULATION NO. 13
STATE OF IDAHO
Curtailment Plan for Electric Energy
INTRODUCTION:
The Idaho Public Utilities Commission orderedr the Company and other suppliers of electric service
operating in the State of Idaho to adopt provisions relating to electric service curtailment. This document
summarizes the curtailment plan employed by the Company to temporarily interrupt electric service to its
customers during emergencies and power shortages. It is intended to provide equitable procedures for the
curtailment of power, minimize adverse impacts to essential services, and customers, while maintain overall
system reliability.
The curtailment plan is operational 24 hours a day,365 days a year, to help ensureing that the Company is
able to:o Match customer demand and electrical supply generation;o Maintain the integrity of the electricg[iff network;o Deploy available resources to restore electrical supply to normal as soon as is practicable;o Apply existing processes to keep customers and stakeholders informed of the state and progress of the
incident or emergency;o Utilize communication avenues to appeal to customers to reduce electricitvenef{ly consumption;o Coordinate with appropriate agencies to provide options to lessen the impact to customers;o Meet applicable operating standards.
Operating Standards
The Company is a member of the Western Electricity Coordinating Council (WECC), one of the eight
Regional Entities of the North American Electric Reliability Corporation (NERC). The Company also
supports Regional Reliability Coordinators, who monitor voltages, frequencies, and other reliability indices.
WECC develops and implements Regional Reliability Standards and Criteria for the Western
Interconnection and is the regional entity responsible for compliance monitoring and enforcement with
delegated authority from the North American Electric Reliability Corporation (NERC) and Federal Energy
Regulatory Commission (FERC).
(Continued)
I Order No. 25259.November 24, 1993.
Submitted Under Case No. PAC-E-22+*0414
ISSUED: JuneEebuqv DX, 20_15 EFFECTM: l,aaylune L3, 20D+6
ROCKY MOUNTAIN
POWER
I.P.U.C. No.1
Second Revision of Sheet No. 13R.1
Canceling First Revision of Sheet No. 13Rl
to
ELECTRIC SERVICE REGULATION NO. 13
STATE OT'IDAHO
Curtailment Plan for Electric Energy
INTRODUCTION:
The Idaho Public Utilities Commission orderedrthe Company and other suppliers of electric service operating
in the State of Idaho to adopt provisions relating to electric service curtailment. This document summarizes
the curtailment plan employed by the Company to temporarily intemrpt electric service to its customers during
emergencies and power shortages. It is intended to provide equitable procedures for the curtailment of power,
minimize adverse impacts to essential servicesn and customers, while maintain overall system reliability.
The curtailment plan is operational 24 hours a day, 365 days a year, to help ensure that the Company is able
Match customer demand and electrical supply generation;
Maintain the integrity of the electrical network;
Deploy available resources to restore electrical supply to normal as soon as is practicable;
Apply existing processes to keep customers and stakeholders informed of the state and progress of the
incident or emergency;o Utilize communication avenues to appeal to customers to reduce electricity consumption;o Coordinate with appropriate agencies to provide options to lessen the impact to customers;o Meet applicable operating standards.
Operating Standards
The Company is a member of the Western Electricity Coordinating Council (WECC), one of the eight
Regional Entities of the North American Electric Reliability Corporation (NERC). The Company also
supports Regional Reliability Coordinators, who monitor voltages, frequencies, and other reliability indices.
WECC develops and implements Regional Reliability Standards and Criteria for the Westem
Interconnection and is the regional entity responsible for compliance monitoring and enforcement with
delegated authority from the North American Electric Reliability Corporation GIERC) and Federal Energy
Regulatory Commission (FERC).
(Continued)
I Order No. 25259- November 24- 1993-
Submitted Under Case No. PAC-E-22-04
ISSUED: February 22,2022 EFFECTM: June 1,2022
ROCKY MOUNTAIN
POWER
A OIVISION OF PAOFICORP
I.P.U.C. No.1
Firstsecond Revision of Sheet No. 13R.2
Cancelinq MSheet No. 13R2
Operating Standards (continued)
Bulk electric system reliability and operating standards for utilities in the westem paxt of the United States
provide for a coordinated effort to effectively manage energy shortage situations and includes shedding firm
load in an emergency situation using the Company's Under Frequency and/or Under Voltage Load Shedding
programs to arrest declining frequency, assist recovery of frequency following under frequency events and
provide last resort system preservation measures to prevent a blackout or voltage collapse.
Emergencies that threaten the integrity of the electric system can develop at any time due to shortage of
generation or disturbances on the system, either locally or within the Westem Interconnect. The actions
necessary to prevent total collapse of the system will be to; restrict customer demand, match generation
availability, implement network capacity limitations. The circumstances necessitating a reduction in the
demand or consumption of electricity in the short term will require that immediate emergency action is taken
and may potentially lead directly to firm load curtailment.
SECTION I. PURPOSE AND OVERVIEW OF TIIE CURTAILMENT PLAN
This plan identifies the process by which the Company would initiate and implement regional load
curtailment. The goal of this plan is to accomplish curtailment while treating customers fairly and equitably,
minimizing adverse impacts from curtailment, complying with existing State laws and regulations, and
providing for smooth, efficient, and effective curtailment administration.
SECTION TI. LOAD CI'RTAILMENT
The Company will comply with all State and Federal mandates to curtail the electric energy used by its
customers to stabilize system voltage and frequency in order to prevent a regional system collapse. Events
that may trigger load curtailment, either upon notice from state agencies, the PeakRC W9SI Regional
Reliability Coordinator, or at the discretion of the Company, include but not limited to:
o Loss of major generation or transmission equipment due to mechanical or electrical failure.
o Extreme hot or cold temperatures that create a network peak where generation capacity does not meet
load center requirements.
r System disturbance within the regional balancing area.
Initiation of Load Curtailment
Load curtailment will be initiated when directed by the North American Electric Reliability Corporation
(NERC), the Westem Electricity Coordinating Council (WECC) authorities, or by order of the Idaho Public
Utilitiesy Commission under it+authority provided for in ldaho Code $ 6l-534. However, nothing precludes
the Company from requesting voluntary load reduction at any time.
(Continued)
EFFECT : Maylgle L3, 20_14
Submitted Under Case No. PAC-E-22+5-041O
ISSUED: JuneEgbruAry D25, 20-+5
ROCKY MOUNTAIN
POWER
A DIVISION OF PAOFICORP
I.P.U.C. No.1
Second Revision of Sheet No. 13R.2
Canceling X'irst Revision of Sheet No. 13R2
Operating Standards (continued)
Bulk electric system reliability and operating standards for utilities in the westem part of the United States
provide for a coordinated effort to effectively manage enerry shortage situations and includes shedding firm
load in an emergency situation using the Company's Under Frequency and/or Under Voltage Load Shedding
programs to arrest declining frequency, assist recovery offrequency following under frequency events and
provide last resort system preservation measures to prevent a blackout or voltage collapse.
Emergencies that threaten the integrity of the electric system can develop at any time due to shortage of
generation or disturbances on the system, either locally or within the Westem Interconnect. The actions
necessary to prevent total collapse of the system will be to; restrict customer demand, match generation
availability, implement network capacity limitations. The circumstances necessitating a reduction in the
demand or consumption of electricity in the short term will require that immediate emergency action is taken
and may potentially lead directly to firm load curtailment.
SECTION I. PURPOSE AND OVERVIEW OT'TIIE CURTAILMENT PLAN
This plan identifies the process by which the Company would initiate and implement regional load curtailment.
The goal of this plan is to accomplish curtailment while treating customers fairly and equitably, minimizing
adverse impacts from curtailment, complying with existing State laws and regulations, and providing for
smooth, effi cient, and effective curtailment administration.
SECTION tr. LOAD CURTAILMENT
The Company will comply with all State and Federal mandates to curtail the electric energy used by its
customers to stabilize system voltage and frequency in order to prevent a regional system collapse. Events that
may trigger load curtailment, either upon notice from state agencies, the RC West Regional Reliability
Coordinator, or at the discretion of the Company, include but not limited to:
. Loss of major generation or transmission equipment due to mechanical or electrical failure.
o Extreme hot or cold temperatures that create a network peak where generation capacity does not meet load
center requirements.. System disturbance within the regional balancing area.
Initiation of Load Curtailment
Load curtailment will be initiated when directed by the North American Electric Reliability Corporation
(NERC), the Western Electricity Coordinating Council (WECC) authorities, or by order of the Idatro Public
Utilities Commission under authority provided for in ldaho Code $ 61-534. However, nothing precludes the
Company from requesting voluntary load reduction at any time.
ISSUED: February 22, 2022
(Continued)
EFFECTM: June 1,2022
Submitted Under Case No. PAC-E-22-04
ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFICOBP
I.P.U.C. No.1
Firstsecond Revision of Sheet No. 13R.3
Canceling @Sheet No. 13R3
SECTION tr. LOAD CURTAILMENT (continued)
Automatic, Remote and Manual Actions
Automatic actions occur through the operation of programmed protective equipment installed in the
Company's electrical system, including, without limitation, such equipment as automatic relays, generator
controls, circuit breakers, and switches. This equipment is preset to operate under certain prescribed
conditions which, in the sole judgment oft[g Company, threaten system performance, integrity, reliability or
stability.
Where Supervisory Control and Data Acquisition ("SCADA') equipment is installed, the Company will
remotely control switches, circuit breakers, relays, voltage regulators or other equipment. In areas where no
SCADA equipment is installed, actions are performed manually by on-site field personnel.
If actions are undertaken, then to the extent permitted by the operating characteristics of the electrical
system, the Company will perform such actions so that intemrption, curtailment, or fluctuation of service to
customers will be accomplished sequentially, unless it is necessary in the sole judgment of the Company, or
if required by the peakBe_West! Regional Reliability Coordinator to vary said sequence in order to protect
system performance, integrity, reliability, or stability.
SECTION III. CURTAILMENT STAGES
State curtailment directives apply to all retail loads served within the State of ldaho. The curtailment stages
are associated with increasing enerry deficits. The circumstances necessitating a reduction in the demand or
consumption of electricity in the short term will normally require that immediate emergency action is taken
and there may be no warning. Sudden equipment outages or loss of generation could potentially lead directly
to any curtailment stage without prior notice or progression of the stages described below.
Stage #Nature Estimated
Curtrilment Percent Type of Curtailment
Stage I Mandatory 5Yo+/-
Demand Side Management Programs
activated
ffi
Stage 2 Voluntary - public appeal
to restrict usage No specified %Uniform among all customers
Stage 3 Mandatory - peak
curtailment block rotation 2.5 to 3.5o/" +l-General Use Customers Residential
Customers
Stage 4 Mandatory --curtailment
block rotation 30o/o of peak +l-General Use Customers Residential
Customers
Stage 5 Mandatory - Emergency
Load Shed Groups
7o determinate upon P€skBq
West Regional Reliability
Coordinator directive
Uniform among all customers
(Continued)
EFFECTIYE: Laaylune LZ, 20-14
Submitted Under Case No. PAC-E-221+0414
ISSUED: JuneFebgry 2%, 20_+5
ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFICORP
I.P.U.C. No. I
Second Revision of Sheet No. 13R.3
Canceling First Revision of Sheet No. 13R3
SECTION II. LOAD CLTRTAILMENT (continued)
Automatic, Remote and Manual Actions
Automatic actions occur through the operation of programmed protective equipment installed in the
Company's electrical system, including, without limitation, such equipment as automatic relays, generator
controls, circuit breakers, and switches. This equipment is preset to operate under certain prescribed conditions
which, in the sole judgment of the Company, threaten system performance, integrity, reliability or stability.
Where Supervisory Control and Data Acquisition (*SCADA") equipment is installed, the Company will
remotely control switches, circuit breakers, relays, voltage regulators or other equipment. [n areas where no
SCADA equipment is installed, actions are performed manually by on-site field personnel.
If actions are undertaken, then to the extent permitted by the operating characteristics of the electrical system,
the Company will perform such actions so that intemrption, curtailment, or fluctuation of service to customers
will be accomplished sequentially, unless it is necessary in the sole judgment of the Company, or if required
by the RC West Regional Reliability Coordinatorto vary said sequence in orderto protect system performance,
integrity, reliability, or stability.
SECTION TII. CI'RTAILMENT STAGES
State curtailment directives apply to all retail loads served within the State of Idaho. The curtailment stages
are associated with increasing energy deficits. The circumstances necessitating a reduction in the demand or
consumption of electricity in the short term will normally require that immediate emergency action is taken
and there may be no warning. Sudden equipment outages or loss of generation could potentially lead directly
to any curtailment stage without prior notice or progression of the stages described below.
Stage #Nature Estimeted
Curtailment Percent Type of Curtailment
Stage I Mandatory 5o/o +l-
Demand Side Management Programs
activated
Stage 2 Voluntary - public appeal
to restrict usage No specified %Uniform among all customers
Stage 3 Mandatory - peak
curtailment block rotation 2.5 to 3.5o/o +l-General Use Customers Residential
Customers
Stage 4 Mandatory --curtailment
block rotation 30%o of peak +l-General Use Customers Residential
Customers
Stage 5 Mandatory - Emergency
Load Shed Groups
o/o determinate upon RC West
Regional Reliability Coordinator
directive
Uniform among all customers
ISSUED: February 22,2022
(Continued)
EFFECTM: June 1,2022
Submitted Under Case No. PAC-E-22-04
ROCKY MOUNTAIN
POWER
A DIVISION OF PAOFICORP
I.P.U.C. No.1
Sirs+Second Revision of Sheet No. 13R4
Canceling @ Sheet No. 13R.4
SECTION ry. INITIATION OF LOAD CURTAILMENT
ln+errup$Ute+,eaes
r a€e hterruptibte eus
in
i€ns-
Block Rotation
Selected distribution feeders throughout the service territory have been grouped into blocks of approximately
100 MW in size. These blocks provide for two (2) hour rotational curtailments to be used in scheduled
combinations to ensure that the required load shed amount is achieved. Block rotation may be utilized to
support system stabilization following a system disturbance, or to maintain system integrity during peak load
periods.
During load curtailment the Company would rotate through the blocks until curtailment is no longer necessary.
Block rotation is dependent on what day of the week and time of day the curtailment event is enacted. This
provides for equitable treatment to affected customers. Blocks are aggregated to match reduction thresholds
during events.
Emergency Load Shed Groups
Predetermined localized load shed groups are utilized for situations where load reductions might be necessary
for specific high load areas. These areas generally require specialized load curtailment schemes to
accommodate transmission path restrictions. Thes+lLoad shed groups contain only SCADA controllable
circuits.
Minimization of Impact
The Company will implement rotational curtailment in as fair and equitable a manner as practicable, with the
goal of minimizing the impacts on communities. Where known and feasible within operational parameters,
distribution feeders serving facilities essential to the public welfare are avoided during rotational curtailment.
However, it should be noted that the Company cannot definitively account for all such facilities, nor is it
possible to exclude every known facility from the impacts of curtailment.
Such essential facilities include:. Hospitals
o 9l I centers
o Airports and FAA facilities
o Large sewer and water treatment plants. Major metropolitan downtown core areasr Facilities critical to electric system operation
o Prisons, police, and fire stations including related computer and communication centers
o Radio, TV news, emergency broadcast stations and transmitting facilities. U.S. Military installations
(Continued)
Submitted Under Case No. PAC-E-22-0415-U)
ISSUED: +*neFebryery 2?5, 20D+5 EFFECTM: Maylune ZL 20_1{,
ROCKY MOUNTAIN
EPH,E,^N",,
I.P.U.C. No.1
Second Revision of Sheet No. 13R4
Cancelins First Revision Sheet No. 13R4
SECTION TV. INITIATION OF LOAD CURTAILMENT
Block Rotation
Selected distribution feeders throughout the service territory have been grouped into blocks ofapproximately
100 MW in size. These blocks provide for two (2) hour rotational curtailments to be used in scheduled
combinations to ensure that the required load shed amount is achieved. Block rotation may be utilized to
support system stabilization following a system disturbance, or to maintain system integrity during peak load
periods.
During load curtailment the Company would rotate through the blocks until curtailment is no longer necessary.
Block rotation is dependent on what day of the week and time of day the curtailment event is enacted. This
provides for equitable treatment to affected customers. Blocks are aggregated to match reduction thresholds
during events.
Emergency Load Shed Groups
Predetermined localized load shed groups are utilized for situations where load reductions might be necessary
for specific high load areas. These areas generally require specialized load curtailment schemes to
accommodate transmission path restrictions. Load shed groups contain only SCADA controllable circuits.
Minimization of Imoact
The Company will implement rotational curtailment in as fair and equitable a manner as practicable, with the
goal of minimizing the impacts on communities. Where known and feasible within operational parameters,
distribution feeders serving facilities essential to the public welfare are avoided during rotational curtailment.
However, it should be noted that the Company cannot definitively account for all such facilities, nor is it
possible to exclude every known facility from the impacts of curtailment.
Such essential facilities include:. Hospitals
o 9l I centers. Airports and FAA facilities
o Large sewer and water treatment plants. Major metropolitan downtown core areas
o Facilities critical to electric system operation
o Prisons, police, and fire stations including related computer and communication centers. Radio, TV news, emergency broadcast stations and transmitting facilities
o U.S. Military installations
(Continued)
Submitted Under Case No. PAC-E-22-04
ISSUED: February 22,2022 EFFECTM: June 1,2022
ROCKY MOUNTAIN
POWER
[P.U.C. No. 1
Fi+s+&gond Revision of Sheet No. 13R.5
Canceling @Sheet No. 13R.5
SECTION V. NOTIFICATIONS AND ACTIONS
Throughout the curtailment period the Company will provide customers and extemal State and regulatory
stakeholders with as much information as possible utilizing established processes and protocols.
The Company's incident management strategy for an energ1 emergency is consistent with the National
Incident Management System and Incident Command System, and provides effective coordination through:
o Procedures that allow system and field operations to focus on critical functional responsibilities;. Providing pertinent information to internal and extemal stakeholders, customers, regulators, media
outlets, etc.;o Flexible response to changing circumstances, special customer needs and emergencies.
Stage 1: @emond Side Managemcntlfo,sroms.
The Company would not normally contact the public or news media when it exercises options under
emand side management programs.
Stage 2: Public Appealfor Conservation
At the Company's discretion, a public appeal for voluntary energy conservation may be issued through
media outlets, social media platforms, and automated outbound calling of customers requesting voluntary
curtailment of nonessential uses.
Additionally, the Company will initiate curtailment of all nonessential Company use, request curtailment of
nonessential use by govemmental agencies and institutions at all levels, request voluntary curtailment of
nonessential use in all large buildings, and direct specific requests to major use customers for voluntary
curtailment of nonessential use.
If additional curtailment is required the Company will intensiff its request to the public, including requests
to curtail less-essential uses, and notice that if curtailment does not occur, mandatory curtailment may be
necessary by utilizing block rotation methods.
Stage 3: Peak Load Curtailment
Prior to any rotating outages, the Company, to the best of its ability will contact key external stakeholders to
inform them of the situation. To the extent possible, axeas targeted for rotating outages may be disclosed at
this time, together with some estimate of how long the outages will be necessary. The magnitude of the event
will dictate the administrative level to which external notifications will be made.
(Continued)
EFFECTI-: JUeMay L], 20D+6
Submitted Under Case No. PAC-E-22+5-04+4
ISSUED: +BneEebruAry 225, 20D+5
ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFGORP
LP.U.C. No. 1
Second Revision of Sheet No. 13R.5
Canceling First Revision of Sheet No. 13R5
SECTION V. NOTIFICATIONS AND ACTIONS
Throughout the curtailment period the Company will provide customers and external State and regulatory
stakeholders with as much information as possible utilizing established processes and protocols.
The Company's incident management strategy for an energy emergency is consistent with the National
Incident Management System and Incident Command System, and provides effective coordination through:
o Procedures that allow system and field operations to focus on critical functional responsibilities;. Providing pertinent information to internal and extemal stakeholders, customers, regulators, media
outlets, etc.;o Flexible response to changing circumstances, special customer needs and emergencies.
Stage 1: Demand Side Management Programs
The Company would not normally contact the public or news media when it exercises options under demand
side management programs.
Stage 2: Public Appealfor Conservation
At the Company's discretion, a public appeal for voluntary enerry conservation may be issued through media
outlets, social media platforms, and automated outbound calling of customers requesting voluntary curtailment
ofnonessential uses.
Additionally, the Company will initiate curtailment of all nonessential Company use, request curtailment of
nonessential use by govemmental agencies and institutions at all levels, request voluntary curtailment of
nonessential use in all large buildings, and direct specific requests to major use customers for voluntary
curtailment of nonessential use.
If additional curtailment is required the Company will intensiff its request to the public, including requests to
curtail less-essential uses, and notice that if curtailment does not occur, mandatory curtailment may be
necessary by utilizing block rotation methods.
Stage j: Peak Load Curtailment
Prior to any rotating outages, the Company, to the best of its ability will contact key external stakeholders to
inform them ofthe situation. To the extent possible, areas targeted for rotating outages may be disclosed at
this time, together with some estimate of how long the outages will be necessary. The magnitude of the event
will dictate the administrative level to which external notifications will be made.
(Continued)
EI'FECTM: June l,2022
Submitted Under Case No. PAC-E-22-04
ISSUED: February 22,2022
Y ROCKY MOUNTAIN
POWER
A IXVISION OF FAOFICORP
I.P.U.C. No.1
Filstsecond Revision of Sheet No. 13R6
Canceling @Sheet No. 13R6
SECTION V. NOTIFICATIONS AllD ACTIONS (continued)
Key external stakeholders include, but are not limited to:. Governor's officeo Public Utilitieqv Commissionso State energy/emergency response officialso Legislativeleadershipe Key customer accounts
Stage 1: Block Lood Curtailment
In addition to the actions above, to the extent possible, customers in the areas targeted for rotating outages will
be notified as soon as practicable and provided with an estimate of the time their block will be curtailed and
the expected duration.
Stage 5: Enurgency Load Shed Groups
Generally, no advance notice of an event necessitating emergency load shed is available. Therefore, it is to be
expected that all internal and extemal notifications will occur as soon as information is known.
Submitted Under Case No. PAC-E-22+*0414
ISSUED: JunsFeftuery 2#, 20U+5 EFFECTM: Laaylune [3, 20D+6
Y ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFICORP
LP.U.C. No.1
Second Revision of Sheet No. 13R6
Canceling X'irst Revision of Sheet No. 13R6
SECTION V. NOTIFICATIONS AIID ACTIONS (continued)
Key external stakeholders include, but are not limited to:o Governor's officeo Public Utilities Commissiono State enerry/emergency response officials. Legislativeleadership. Key customer accounts
Stage 1: Bloch Load Curtailment
In addition to the actions above, to the extent possible, customers in the areas targeted for rotating outages will
be notified as soon as practicable and provided with an estimate of the time their block will be curtailed and
the expected duration.
Stage 5: Emcrgency Load Shed Groups
Generally, no advance notice of an event necessitating emergency load shed is available. Thereforen it is to be
expected that all intemal and extemal notifications will occur as soon as information is known.
Submitted Under Case No. PAC-E-22-04
ISSUED: February 22, 2022 EI'FECTM: June l,2022