Stakeholder Comment and Rationale Form
AESO AUTHORITATIVE DOCUMENT PROCESS
Stakeholder Consultation Draft
Date: 2013-06-06
Proposed Amended and Removed ISO Rules Definitions (“ISO Rules Definitions Amendments”)
Date of Request for Comment [yyyy/mm/dd]:
Period of Consultation [yyyy/mm/dd]:
Comments From:
2013-06-21
2013-06-06
through 2013-06-21
Company Name
Contact:
Company Contact
Phone:
Contact Phone Number
E-mail:
Date [yyyy/mm/dd]:
Definitions - Amended
Existing
Proposed
Rationale
“abbreviated needs
identification approval
process” means the abbreviated
needs identification approval
process as contemplated in the
T-Reg.
“abbreviated needs
identification approval
process” means the abbreviated
needs identification approval
process as contemplated in the
Transmission Regulation.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
“Alberta internal load” means a
number in MW:
(i) that represents, in an hour,
system load plus load
served by on-site
generating units, including
those within an industrial
“Alberta internal load” means a
number in MW:
(i) that represents, in an hour,
system load plus load
served by on-site
generating units, including
those within an industrial
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Stakeholder Comments and/or
Alternate Proposal
Comment # 1: Insert Comments /
Reason for Position (if any)
AESO Reply
Page 1 of 18
Issued for Stakeholder Consultation: 2013-06-06
system and the City of
Medicine Hat; and
(ii) which the ISO, using
SCADA data, calculates as
the sum of the output of
each generating unit in
Alberta and the Fort Nelson
area in British Columbia,
plus import volumes and
minus export volumes.
system and the City of
Medicine Hat; and
(ii) which the ISO, using
SCADA data, calculates as
the sum of the output of
each generating unit in
Alberta and the Fort Nelson
area in British Columbia,
plus import volumes and
minus export volumes.
“balancing authority” means the
responsible entity that integrates
resource plans ahead of time,
maintains load-interchangegeneration balance within a
balancing authority area, and
supports interconnection
frequency in real time.
“balancing authority” means the
responsible entity that integrates
resource plans ahead of time,
maintains load-interchangegeneration balance within a
balancing authority area, and
supports interconnection
frequency in real time.
“balancing authority area”
means the collection of
generation, transmission and
loads within the metered
boundaries of the balancing
authority and for which the
balancing authority maintains
load-resource balance.
“balancing authority area”
means the collection of
generation, transmission and
loads within the metered
boundaries of the balancing
authority and for which the
balancing authority maintains
load-resource balance.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
“commercial operation” means
the date upon which a load or
generating unit begins to
operate on the transmission
system in a manner which is
“commercial operation” means
the date upon which a load or
generating unit begins to
operate on the transmission
system in a manner which is
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Issued for Stakeholder Consultation: 2013-06-06
Page 2 of 18
acceptable to the ISO and which
is expected to be normal for it to
so operate, after energization
and commissioning.
acceptable to the ISO and which
is expected to be normal for it to
so operate, after energization and
commissioning.
“constraint effective factor”
means a ratio, based on the
results of load flow studies
conducted by the ISO, of the
change in the flow of electric
energy through a transmission
constraint to a change in
energy production, energy
consumption or an electric
energy flow accross an
interconnection.
“constraint effective factor”
means a ratio, based on the
results of load flow studies
conducted by the ISO, of the
change in the flow of electric
energy through a transmission
constraint to a change in energy
production, energy consumption
or an electric energy flow across
an interconnection.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
“downstream constraint side”
means, in relation to the
transmission elements that
comprise the transmission
constraint, those elements of
the interconnected electric
system more proximate to the
load or consumption side of the
transmission constraint than to
the supply side of the
transmission constraint.
“downstream constraint side”
means, in relation to the
transmission elements that
comprise the transmission
constraint, those elements of the
interconnected electric system
more proximate to the load or
consumption side of the
transmission constraint than to
the supply side of the
transmission constraint.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
“electrical islands” a condition in
the electrical system where
geographical areas of the AIES
electrically separate from the
AIES, resulting from system
“electrical islands” means a
condition in the electrical system
where geographical areas of the
interconnected electric system
electrically separate from the
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Issued for Stakeholder Consultation: 2013-06-06
Page 3 of 18
disturbances, such that there
exists both generation and load
in these separated areas.
interconnected electric system,
resulting from system
disturbances, such that there
exists both generation and load in
these separated areas.
“generic stacking order” means
the ISO’s annual forecast of:
(i) the operational issuing of
dispatches to generating
units, industrial systems
that has been designated
as such by the
Commission, Fort Nelson,
the City of Medicine Hat,
and their respective
operating blocks; and
(ii) the MW output from,
aggregated generating
facilities;
based on historical data and
other information the legal
owner provides to the ISO
expressed on a seasonal basis.
“generic stacking order” means
the ISO’s annual forecast of:
(i) the operational issuing of
dispatches to generating
units, industrial systems
that have been designated
as such by the
Commission, Fort Nelson,
the City of Medicine Hat,
and their respective
operating blocks; and
(ii) the MW output from
aggregated generating
facilities;
based on historical data and other
information the legal owner
provides to the ISO expressed on
a seasonal basis.
The AESO proposes to update this
definition to correct typos.
“import load remedial action
scheme (ILRAS)” means a
service provided by one or more
ancillary service providers that
consists of a transfer tripping
scheme between the 500 kV
circuit breakers at Langdon and
Cranbrook on the 500 kV tie-line
between Alberta and British
“import load remedial action
scheme” means a service
provided by one (1) or more
ancillary service providers that
consists of a transfer tripping
scheme between the 500 kV
circuit breakers at Langdon and
Cranbrook on the Alberta-British
Columbia intertie and one (1) or
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Issued for Stakeholder Consultation: 2013-06-06
Page 4 of 18
Columbia and one or more
system access customer load
breakers. The remedial action
scheme (RAS) is so designed
that the tripping of the tie line
causes the load breaker(s) to
open automatically, within 8
cycles of the trip initiation of the
500 kV breaker(s).
more system access customer
load breakers which such service
is designed so that the tripping of
the intertie causes the load
breakers to open automatically,
within eight (8) cycles of the trip
initiation of the 500 kV breakers.
“intertie” has the same meaning
as that provided in the T-Reg.
“intertie” as defined in the
Transmission Regulation means
a transmission facility, including
its associated components, that
links one or more electric systems
outside Alberta to one or more
points on the interconnected
electric system.
The AESO proposes to update this
definition to make it consistent with
other definitions from the Act which
the AESO has included in the
Consolidated Authoritative
Document Glossary.
“legal owner” means the person
who owns electric industry
property including any one or
more of:
(i) a generating unit;
(ii) any aggregated
generating facilities;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the Commission;
and
(vi) a load facility with system
“legal owner” means the person
who owns electric industry
property including any one or
more of:
(i)
a generating unit;
(ii) an aggregated generating
facility;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the Commission;
and
(vi) a load facility with system
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary and to make it
consistent with AESO drafting
principles.
Issued for Stakeholder Consultation: 2013-06-06
Page 5 of 18
access service under
subsection 101(2) of the
Act.
access service under
subsection 101(2) of the
Act.
“Load Shed Service (LSS)”
means a block of load
contracted by the ISO to provide
instantaneous 59.5 Hz
underfrequency load shedding
(UFLS). The magnitude of this
load will vary and will be
telemetered to the ISO by the
service provider.
“load shed service” means an
amount of load contracted by the
ISO to provide:
(i) instantaneous fifty-nine
point five (59.5) Hz
underfrequency load
shedding; or
(ii) manual load shedding.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary and to make it
consistent with AESO drafting
principles.
“maximum authorized real
power” means:
(i) for aggregated generating
facilities with one or more
collector busses, the sum
of the maximum gross real
power that the ISO has
authorized the generating
units to deliver to those
collector busses;
(ii) for aggregated generating
facilities without a collector
bus, the maximum gross
real power that the ISO has
authorized each generating
unit to deliver to its
generator terminal; or
(iii) for a generating unit that is
not part of an aggregated
generating facility, the
“maximum authorized real
power” means:
(i) for an aggregated
generating facility with one
(1) or more collector
busses, the sum of the
maximum gross real power
that the ISO has authorized
the generating units to
deliver to those collector
busses;
(ii) for an aggregated
generating facility without a
collector bus, the maximum
gross real power that the
ISO has authorized each
generating unit to deliver to
its generator terminal; or
(iii) for a generating unit that is
not part of an aggregated
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Issued for Stakeholder Consultation: 2013-06-06
Page 6 of 18
maximum gross real power
that the ISO authorizes the
generating unit to deliver to
its generator terminal.
generating facility, the
maximum gross real power
that the ISO authorizes the
generating unit to deliver to
its generator terminal.
“operator” means a person given
expressed authority by a legal
owner to operate on the legal
owner's behalf any one or more
of its electric industry properties,
including:
(i) a generating unit;
(ii) any aggregated
generating facilities;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the Commission;
and
(vi) a load facility with system
access service under
subsection 101(2) of the
Act;
and includes the legal owner, if
no such other person has been
so authorized.
“operator” means a person given
expressed authority by a legal
owner to operate on the legal
owner's behalf any one (1) or
more of its electric industry
properties, including:
(i) a generating unit;
(ii) an aggregated generating
facility;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the Commission;
and
(vi) a load facility with system
access service under
subsection 101(2) of the
Act;
and includes the legal owner, if
no such other person has been
so authorized.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary and to make it
consistent with current AESO
drafting principles..
“point of connection” means a
point at which electric energy is
transferred between a
transmission facility that is not
“point of connection” means a
point at which electric energy is
transferred between a
transmission facility that is not
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Issued for Stakeholder Consultation: 2013-06-06
Page 7 of 18
an industrial system, and:
(i) the high voltage side of any
aggregated generating
facilities or generating
unit;
(ii) an electric distribution
system;
(iii) an industrial system that
has been designated as
such by the Commission;
or
(iv) a load facility with system
access service under
subsection 101(2) of the
Act.
an industrial system, and:
(i) the high voltage side of any
aggregated generating
facilities or generating
unit;
(ii) an electric distribution
system;
(iii) an industrial system that
has been designated as
such by the Commission;
or
(iv) a load facility with system
access service under
subsection 101(2) of the
Act.
“reliability standards” means
“reliability standards” as defined
in the T-Reg.
“reliability standards” as defined
in the Transmission Regulation
means the reliability standards
under section 19.
The AESO proposes to update this
definition to make it consistent with
other definitions from the Act which
the AESO has included in the
Consolidated Authoritative
Document Glossary.
“settlement interval” means a
period beginning on the hour and
ending sixty (60) minutes later
and is the time increment for
which:(i) the ISO financially
settles energy amounts; and (ii)
the load settlement system
calculates distinct load
estimates.
“settlement interval” means a
period beginning on the hour and
ending sixty (60) minutes later
and is the time increment for
which:
(i) the ISO financially settles
energy amounts; and
(ii) the load settlement system
calculates distinct load
estimates.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Issued for Stakeholder Consultation: 2013-06-06
Page 8 of 18
“system emergency” is a
situation in which there is
systemic equipment
malfunctions, including
widespread transmission or
generation outages and derates,
a complete loss of
communication with the system
controller, or a loss of the
system controller’s market
management tools.
“system emergency” is a
situation in which there is
systemic equipment malfunctions,
including widespread
transmission or generation
outages and derates, a complete
loss of communication with the
ISO system controller, or a loss of
the ISO system controller’s
market management tools.
“transmission constraint”
means a limitation imposed by
one or more transmission
elements to normal economic
merit operation of generation,
load and interchange
transactions or to the flow of
electrical energy from one part of
the AIES to the other.
“transmission constraint”
means a limitation imposed by
one (1) or more transmission
elements to normal economic
merit operation of generation,
load and interchange
transactions or to the flow of
electrical energy from one part of
the interconnected electric
system to the other.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary and to make it
consistent with AESO drafting
principles..
“under voltage load shed
(UVLS)” means a protection
scheme that enables preconfigured devices to
automatically shed load to
stabilize voltage when voltage
falls below predetermined limits.
“under voltage load shed”
means a protection scheme that
enables pre-configured devices to
automatically shed load to
stabilize voltage when voltage
falls below predetermined limits.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
“underfrequency load
shedding (UFLS)” means the
automatic or manual actions
“underfrequency load
shedding” means the automatic
or manual actions required to
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Issued for Stakeholder Consultation: 2013-06-06
Page 9 of 18
required to shed system load
when the system frequency falls
below the normal system
operating frequency of 60HERTZ in order to allow for the
return to a secure state.
shed system load when the
system frequency falls below the
normal system operating
frequency of sixty (60) Hz in order
to allow for the return to a secure
state.
Document Glossary and to make it
consistent with AESO drafting
principles..
“upstream constraint side”
means, in relation to the
transmission elements that
comprise the transmission
constraint, those elements of
the interconnected electric
system more proximate to the
supply side of the transmission
constraint than to the load or
consumption side of the
transmission constraint.
“upstream constraint side”
means, in relation to the
transmission elements that
comprise the transmission
constraint, those elements of the
interconnected electric system
more proximate to the supply side
of the transmission constraint
than to the load or consumption
side of the transmission
constraint.
The AESO proposes to update this
definition to reflect updates to the
Consolidated Authoritative
Document Glossary.
Definitions – Removed
Existing
Proposed
Rationale
“alert” means a communication
issued by the system controller
requesting readiness of the
market participants to take
urgent and timely actions to
maintain the Alberta balancing
authority area in a secure state
with regard to energy balance.
The alert also serves as
information to interconnected
balancing authorities regarding
the increased risk of the AIES to
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
Stakeholder Comments and/or
Alternate Proposal
Comment # 2: Insert Comments /
Reason for Position (if any)
AESO Reply
Page 10 of 18
require obligation energy and its
limitations in delivering such
energy to others.
“AIES” means Alberta’s
“Interconnected Electric System”
as that term is defined in the Act.
The AESO proposes to delete this
definition as the AESO now writes
out the term in its entirety in the
ISO rules.
“balancing authority area
operator” means the entity that
has responsibility for maintaining
a balancing authority's AGC
functionality to ensure frequency
levels and interchange are
maintained per WECC standards.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules and has been
replaced with references to “the
ISO”.
“blackout” a condition where a
major portion or all of the AIES is
de-energized.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“Commission rules” means
rules of the Commission made
under the Alberta Utilities
Commission Act.
The AESO proposes to delete this
definition in favour of the plain
language meaning of
“Commission Rule XXX”.
“commissioning certificate”
means the formal document
signed by the owner of a project
being constructed under the
terms of the ISO request for
proposal process (or his
representative) and also by
representatives of ISO. The
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
Page 11 of 18
purpose of the document is to
certify that all commissioning
tests have been completed and
accepted by the ISO, and all
deficiencies have been resolved,
or will be resolved by a specified
date. Any deficiencies are
specifically listed. The date
indicated on this certificate marks
the start of commercial
operation for the facilities and
thus must be very specific.
“demand customers” are load
system access customers and
generation system access
customers that consume power,
the latter for the purposes of
obtaining their back up supply.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“demand opportunity service
(DOS)” means service under any
one of rate schedules demand
opportunity service (DOS 7
minutes), demand opportunity
service (DOS 1 hour), demand
opportunity service (DOS
standard).
The AESO proposes to delete this
definition as the AESO now refers
to the specific, applicable ISO tariff
rate schedule in the ISO rules.
“demand transmission service
(DTS)” means service under rate
schedule demand transmission
service.
The AESO proposes to delete this
definition as the AESO now refers
to the specific, applicable ISO tariff
rate schedule in the ISO rules.
Issued for Stakeholder Consultation: 2013-06-06
Page 12 of 18
“dispute” means with respect to
an ISO determination, an
assertion made by a market
participant to the ISO that it
disagrees with such ISO
determination.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“emergency limit” means the
maximum operating limit of a
system element permitted by the
owner of the element for a
predefined duration.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“generating facility owner
(GFO)” has the meaning as that
provided for “owner” in the Act,
of a generating unit.
The AESO proposes to delete this
definition in favour of using “legal
owner of a generating facility” or
“operator of a generating facility”
as appropriate.
.
The AESO proposes to delete this
definition as the AESO now refers
to the specific, applicable ISO tariff
rate schedule in the ISO rules.
“import service” means service
under rate schedule import
service.
“inadvertent interchange or
inadvertent energy” means the
difference between the
balancing authority’s net actual
interchange and net interchange
schedule.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“load” means the instantaneous
amount of electric energy
delivered or required at any
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
Page 13 of 18
specific point or points on the
AIES.
“loss factor methodology”
means the detailed
methodology for determining
loss factors set forth in
Appendix 6.
The AESO proposes to delete this
definition in favour of “loss factor”
and the plain language meaning of
“methodology”.
“meter service provider (MSP)”
means an entity that performs
installation, removal, repair and
maintenance of meters.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“Mountain Prevailing Time”
means Mountain Standard Time
when Daylight Saving Time is not
in effect, and Mountain Daylight
Saving Time when Daylight
Saving Time is in effect.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“MSA” is the Market Surveillance
Administrator and as defined in
the Act means the corporation
continued by section 32 of the
Alberta Utilities Commission Act.
The AESO proposes to delete this
definition in favour of writing the
term out in full.
“net MW” means the
megawatt(s) produced by an
asset as measured or calculated
on the high voltage side of the
unit transformer.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“opportunity service” means
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
Page 14 of 18
system access service offered
to any system access customer
who can establish to the ISO’s
satisfaction that it would not take
system access service
pursuant to rate schedule DTS
and with respect to which,
therefore, the service
requirement presents the
opportunity for incremental
revenue with which the ISO can
offset transmission costs, subject
to the availability of transmission
capacity.
definition as the term is no longer
used in the ISO rules.
“overfrequency” means the
abnormal operating state or
system condition that results in a
system frequency above the
normal 60-HERTZ.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“owner” has the same meaning
as that provided in the Act.
The AESO proposes to delete this
definition and replace references to
“owner” with “legal owner” or
“operator” as applicable.
“power system data” means a
compilation of electrical
characteristics in an integrated
format representative of the
physical system.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“power system stabilizer”
means automatic control
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition in favour of the plain
Page 15 of 18
equipment that modulates the
generating unit excitation
through an AVR to dampen
electric power swings.
language meaning of the term.
“Quarter” means each
consecutive three months of a
calendar year commencing
January 1.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“site” means a unique end-use
service delivery point. This is the
finest level at which load
settlement recognizes retailer
assignments, and receives
consumption data.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“system access service
agreement” means that contract,
entered into between the ISO
and a system access customer,
which establishes the specific
terms pursuant to which each
individual system access
customer obtains system
access service.
The AESO proposes to delete this
definition in favour of “system
access service” and the plain
language meaning of the term
“agreement”.
“system controller” means the
ISO scheme to carry out the ISO
duty to direct the safe, reliable
and economic operation of the
AIES, pursuant to the Act and
includes the dispatching of the
energy market merit order and
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules. It has been
replaced with references to “the
ISO”.
Page 16 of 18
the ancillary services merit
order.
“system coordination plan”
means the plan which theISO
provides to the TFOs and the
system controller three (3)
days in advance of the
operating week which
amalgamates all planned
maintenance outages and
commissioning activities that
the ISO has been advised of, and
which are scheduled to take
place in the next operating
week, and have been determined
to pose an acceptable level of
risk to system security from an
operational planning perspective.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
“T-Reg” means the Transmission
Regulation, as amended from
time to time.
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules. It is now
written out in full.
“transmission facility owner
(TFO)” has the same meaning as
that provided for “owner” and
“transmission facility” in the Act.
The AESO proposes to delete this
term in favour of using “legal
owner of a transmission facility”
or “operator of a transmission
facility”, as appropriate.
“Transmission Operations
Coordination Committee
(TOCC)” means the committee
Issued for Stakeholder Consultation: 2013-06-06
The AESO proposes to delete this
definition as the term is no longer
used in the ISO rules.
Page 17 of 18
accountable to the ISO, with
membership made up of
transmission facility owners,
charged with ongoing review and
upgrading of all operating
standards and guidelines for
coordinated operation of the
balancing authority and
transmission system.
“transmission system losses”
means, for each year, the total of
the transmission system
losses on the interconnected
electric system.
The AESO proposes to delete this
definition in favour of using
“transmission system” and the
plain language meaning of
“losses”.
“underfrequency” means the
abnormal operating state or
system condition that results in a
system frequency below the
normal system operating
frequency of 60-HERTZ.
The AESO proposes to delete this
definition in favour of the plain
language meaning of the term.
“wire owner (WO)” has the
meaning as that provided in the
Act for “owner” and “electric
distribution system”. Wire owners
maintain the responsibilities as
that provided in the Act and the
Roles, Relationships and
Responsibilities Regulation.
The AESO proposes to delete this
term in favour of using “legal
owner of an electric distribution
system” or “operator of an
electric distribution system”, as
appropriate.
Issued for Stakeholder Consultation: 2013-06-06
Page 18 of 18