Stakeholder Comment and Rationale Form
AESO AUTHORITATIVE DOCUMENT PROCESS
Stakeholder Consultation Draft
Date: 2012-07-17
Proposed New, Amended and Removed ISO Rules Definitions (“Core Market Rules Definition Changes”)
Date of Request for Comment [yyyy/mm/dd]:
Period of Consultation [yyyy/mm/dd]:
Comments From:
2012-07-17
2012-07-17
through 2012-08-31
Company Name
Contact:
Company Contact
Phone:
Contact Phone Number
E-mail:
Date [yyyy/mm/dd]:
Definitions -New
New
Proposed
Rationale
“merit order” means
(i) for the energy market, the
dispatch down service
market or load shed service
for imports, a list of operating
blocks sorted by price; or
(ii) for standby operating
reserves, a list of procured
volumes sorted by price.
The AESO proposes to delete
the definitions for “energy
market merit order”, ancillary
services merit order” and
“DDS merit order” and
replace them with one
consolidated definition of
“merit order”. In each specific
context in the ISO rules, the
AESO will preface the term
with a plain language
descriptor of which merit
order it is referencing.
Issued for Stakeholder Consultation: 2012-07-17
Stakeholder Comments and/or
Alternate Proposal
Comment #1: Insert Comments /
Reason for Position (if any)
AESO Reply
Definitions – Amended
Existing
“acceptable operational reason” means
with respect to an asset, any one or more
of the following:
i) a circumstance related to the operation
of the generating asset which if it
operated could reasonably be
expected to affect the safety of the
generating asset, the environment,
personnel working at the generating
asset or the public; or
ii) re-positioning an asset within the
energy market due to the need to meet
a dispatch given to that asset from
the system controller to serve the
stand-by ancillary services market; or
iii) re-positioning a generating asset
within the energy market to manage
physical or operational constraints
associated with the asset; or
iv) re-positioning an importer’s or
exporter’s asset within the energy
market to manage physical or
operational constraints associated with
an interconnection or a neighbouring
balancing authority; or
Proposed
Rationale
“acceptable operational reason”
means, any one (1) or more of the
following:
i) a circumstance related to the
operation of a generating
source asset which if it
operated could reasonably be
expected to affect the safety of
the source asset, the
environment, personnel working
at the source asset or the
public;
ii) re-positioning a generating
source asset assets, within the
energy market due to the need
to meet a dispatch given to that
source asset from the ISO to
serve the stand-by operating
reserves market;
iii) re-positioning a generating
source asset within the energy
market to manage physical or
operational constraints
associated with the source
asset;
iv) re-positioning a pool asset that
is an import asset or an export
asset within the energy market
to manage physical or
operational constraints
associated with an
The AESO proposes to
amend this definition to
update defined terms.
Issued for Stakeholder Consultation: 2012-07-17
Stakeholder Comments and/or
Alternate Proposal
Comment # 2: Insert Comments
/ Reason for Position (if any)
AESO Reply
Page 2 of 27
interconnection or a
neighbouring balancing
authority;
v) a circumstance directly resulting
in the generating source asset
not being capable of operation,
which circumstance was solely
caused by an occurrence of
force majeure; or
vi) re-positioning a generating
source asset for electric energy
that is:
a) produced on the property of
which a person is the owner
or a tenant; and
b) consumed solely by that
person and solely on that
property.
v) a circumstance directly resulting in the
generating asset not being capable of
operation, which circumstance was
solely caused by an occurrence of
force majeure; or
vi) re-positioning a generating asset for
electric energy that is:
a) produced on the property of which
a person is the owner or a tenant;
and
b) consumed solely by that person
and solely on that property.
“aggregated generating facilities” means
an aggregation of generating units,
including any reactive power resources,
which are:(i) designated by the ISO; and(ii)
situated in the same proximate location at
one or more point of connections.
“aggregated generating facility”
means an aggregation of generating
units, including any reactive power
resources, which:
(i) the ISO designates; and
(ii) are situated in the same proximate
location at one or more point of
connections.
“allowable dispatch variance” as measured “allowable dispatch variance”,
from the energy market dispatch quantity
means,for each generating source
(MW), means for each generating asset:
asset as measured from the dispatch
quantity:
(i) plus or minus five (5) MW for generating
(i) plus or minus five (5) MW for a
assets with a maximum capability of two
generating source asset with a
Issued for Stakeholder Consultation: 2012-07-17
The AESO proposes to
amend this definition to make
it consistent with current
drafting principles and with
the same definition in the
Alberta Reliability Standards.
Comment # 3: Insert Comments
/ Reason for Position (if any)
The AESO proposes to
amend this definition to
update defined terms.
Comment # 4: Insert Comments
/ Reason for Position (if any)
Page 3 of 27
hundred (200) MW or less, or
maximum capability of two
hundred (200) MW or less, or
(ii) plus or minus ten (10) MW for a
generating source asset with a
maximum capability of greater
than two hundred (200) MW.
(ii) plus or minus ten (10) MW for
generating assets with a maximum
capability of greater than two hundred (200)
MW.
“available capability” means with respect to
the following:
• for a generating asset, the maximum
quantity (MW) that the generating asset is
physically capable of providing during each
settlement interval of the trading day.
• for an import source asset, the maximum
quantity (MW) that the importer is prepared
to provide during each settlement interval
of the trading day.
• for an export sink asset, the maximum
quantity (MW) that the exporter is prepared
to consume during each settlement interval
of the trading day.
• For a bid (excluding an export sink asset),
the maximum quantity (MW), after
accounting for any restatements to the
asset’s availability to which the asset may
receive an energy market dispatch in real
time operations.
“available capability” means:
(i) for a generating source asset,
the maximum MW that the
source asset is physically
capable of providing; or
(ii) for an import source asset, the
MW that the pool participant
submits in an offer.
The AESO proposes to
amend this definition to
update defined terms and to
correct the impression that
sink assets have an available
capability. Sink assets more
properly have a peak load but
regardless, such concept is
not referenced in the
proposed new ISO rules.
Comment # 5: Insert Comments
/ Reason for Position (if any)
“day” means the period in Alberta:
• in the case of a day on and from which time
is to be one hour in advance of mountain
standard time (first Sunday in April), 23
hours; or
• in the case of aday on and from which time
“day” means the twenty-four (24) hour
period in Alberta beginning at
00:00:00 and ending at 23:59:59 but
which:
(i) in the case of the day on which
daylight savings begins, is
The AESO proposes to
amend this definition to make
it clearer and to be consistent
with plain language drafting
principles.
Comment # 6: Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 4 of 27
is no longer to be one hour in advance of
mountain standard time (last Sunday in
October), 25 hours; and
• in all other cases, 24 hours; beginning and
ending at midnight.
twenty-three (23) hours; or
(ii) in the case of the day on which
daylight savings ends, is twentyfive (25) hours.
“dispatch down service (DDS)” means a
voluntary service offered by a source asset
to be dispatched off, in accordance with
rule 6.3.6.
“dispatch down service” means a
service by which a pool participant
elects to reduce energy production
from a source asset.
The AESO proposes to
amend this definition to more
clearly describe the term and
to remove the need for a
reader to go to a section of
the ISO rules in order to fully
understand its meaning.
Comment # 7: Insert Comments
/ Reason for Position (if any)
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 8: Insert Comments
/ Reason for Position (if any)
“flexible block” means a block of energy that “flexible block” means an operating
may be partially or fully dispatched on.
block in an energy offer for which the
ISO may issue a dispatch for full or
partial amounts of MW.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 9: Insert Comments
/ Reason for Position (if any)
“generating asset steady state” means the
state of operation that begins the first 10
minute clock period following the period in
which a generating asset's output has
reached the quantity(MW) specified in an
energy market dispatch, plus or minus the
ADV for that generating asset.
The AESO proposes to
amend this definition to
update defined terms.
Comment # 10: Insert
Comments / Reason for Position
(if any)
“firm load” means the load that the ISO and
system members will use reasonable best
efforts to supply without interruption.
“firm load” means the load to which
the ISO and applicable market
participants use reasonable best
efforts to supply power without
interruption.
“generating asset steady state”
means the state of operation that
begins the first 10 minute clock
period following the period in which a
generating source asset's output has
reached the MW specified in an
energy market dispatch, plus or
minus the allowable dispatch
variance for that generating source
Issued for Stakeholder Consultation: 2012-07-17
Page 5 of 27
asset.
“in merit” means a designation applied to an
asset dispatched by the system controller
that qualifies the asset as eligible to set the
system marginal price.
“in merit” means :
(i) for the energy market, an
operating block whose price is
at or below system marginal
price;
(ii) for dispatch down service and
load shed service for imports,
starting from the lowest priced
operating block, the number of
operating blocks with a sum of
MW sufficient to meet the MW
requirements for dispatch down
service or load shed service
for imports as applicable; or
(iii) for standby operating reserves,
any offer that the ISO accepts.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 11: Insert
Comments / Reason for Position
(if any)
“incremental generation costs” means,
where the ISO has issued a directive under
ISO rule 6.3.5 or 5.3
“incremental generation costs”
means, where the ISO has issued a
directive:
(i) for energy from a long lead time
asset; or
(ii) to cancel a scheduled
generator outage,
requiring that a long lead time asset,
a generating source asset, a
generating unit or aggregated
generating facility be made available
to, or to actually operate, exchange
electric energy or provide ancillary
services, those reasonable costs
incurred that are reasonably attributed
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 12: Insert
Comments / Reason for Position
(if any)
requiring that the generating unit be made
available to, or to actually operate, exchange
electric energy or provide ancillary
services,
those reasonable costs incurred that are
reasonably attributed to compliance with the
Issued for Stakeholder Consultation: 2012-07-17
Page 6 of 27
directive and which may be determined to
have been avoided but for the directive, and
include:
(a) the following specific costs as incurred
and related to compliance with a directive
for long lead time energy under ISO rule
6.3.5:(i) the actual costs of all variable
charges from the STS Rate Schedule of the
ISO Tariff, including any applicable loss
factors charge or credit;(ii) variable
operational and maintenance charges;(iii)
fuel costs to start and run the generating
unit; and,(iv) other related reasonable costs.
(b) the following specific costs as incurred
and related to compliance with a directive
canceling a scheduled generator outage
for a generation unit under ISO rule 5.3:
(i) those incurred to plan, prepare for and
execute the scheduled generator outage,
from initial planning and inception to the date
of the directive from the ISO canceling the
scheduled generator outage;
(ii) those incurred subsequent to the date of
to compliance with the directive and
which the ISO may determine to have
been avoided but for the directive,
and include:
(i) the following specific costs as
incurred and related to compliance
with a directive for energy from a
long lead time asset:
(a) the actual costs of all variable
charges from Rate STS of the
ISO tariff, including any
applicable loss factors charge
or credit;
(b) variable operational and
maintenance charges;
(c) fuel costs to start and run the
long lead time asset or the
generating source asset; and
(d) other related reasonable
costs;
(ii) the following specific costs as
incurred and related to compliance
with a directive canceling a
scheduled generator outage for
a generating unit or aggregated
generating unit:
(a) those incurred to plan, prepare
for and execute the scheduled
generator outage, from initial
planning and inception to the
date of the directive from the
ISO canceling the scheduled
generator outage;
(b) those incurred subsequent to
Issued for Stakeholder Consultation: 2012-07-17
Page 7 of 27
cancellation by the directive and in
accordance with good electric operating
practice, and which otherwise would not
have been incurred but for the cancellation;
(iii) those incurred for re-scheduling
personnel, equipment and other materials
required for the performance of the work
originally to be completed or performed
pursuant to the cancelled scheduled
generator outage;
(iv) in the form of verified damages or
liquidated claims dollar amounts incurred or
claimed by third parties pursuant or related
to:
(A) any third party contract terms and
conditions for performing repair, retrofit,
upgrade or maintenance work on or directly
related to the generating unit during the
scheduled generator outage, which third
party work has been cancelled or otherwise
cannot be performed due to the scheduled
generator outage cancellation;
Issued for Stakeholder Consultation: 2012-07-17
the date of cancellation by the
directive and in accordance
with good electric industry
practice, and which otherwise
would not have been incurred
but for the cancellation;
(c) those incurred for rescheduling personnel,
equipment and other materials
required for the performance of
the work originally to be
completed or performed
pursuant to the cancelled
scheduled generator outage;
(d) in the form of verified
damages or liquidated claims
dollar amounts incurred or
claimed by third parties
pursuant or related to:
(A) any third party contract
terms and conditions for
performing repair, retrofit,
upgrade or maintenance
work on or directly related
to the generating unit or
aggregated generating
facility during the
scheduled generator
outage, which third party
work has been cancelled
or otherwise cannot be
performed due to the
scheduled generator
outage cancellation; and
Page 8 of 27
(B) any third party market or hedging
transactions directly related to participation
in the energy or ancillary services market by
the generating unit which is the subject of
the directive; and
(B) any third party market or
hedging transactions
directly related to
participation in the energy
or ancillary services
market by the generating
source asset which is the
subject of the directive;
and
(e) other related reasonable
costs.
(v) other related reasonable costs.
“inflexible block” means a block of energy
that may be dispatched on or dispatched
off, but not partially dispatched on.
“inflexible block” means an
operating block in an energy offer
for which the ISO may issue a
dispatch for only the full amount of
MW in the operating block.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 13: Insert
Comments / Reason for Position
(if any)
“long lead time generating asset” means a
generating asset that:
a) requires more than one hour to
synchronize or deliver its energy to the AIES
under normal operating conditions; and
b) is not delivering all of its energy for
reasons other than an outage.
“long lead time asset” means a
generating source asset that:
(i) requires more than one (1) hour to
synchronize to the system under
normal operating conditions; or
(ii) is synchronized but has varying
start-up times for distinct portions
of its MW and which requires more
than one (1) hour to deliver such
additional portions of its MW; and
which is not delivering all of its energy
for reasons other than an outage.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 14: Insert
Comments / Reason for Position
(if any)
“maximum capability” means:
for a generating asset, the maximum
quantity (MW) that the generating asset is
“maximum capability” means:
(i) for a generating unit or
aggregated generating facility,
The AESO proposes to
amend this definition to
update defined terms.
Comment # 15: Insert
Comments / Reason for Position
(if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 9 of 27
physically capable of providing under optimal
operating conditions for that asset while
complying with all applicable ISO rules and
terms and conditions of the ISO tariff; or
• for an import source asset, the available
capability.
the maximum MW that it is
physically capable of providing
under optimal operating
conditions while complying with
all applicable ISO rules and
terms and conditions of the ISO
tariff; or
(ii) for a source asset that is an
import asset, the available
capability.
“operating block” means the discrete MW
level as identified within an offer or bid and
is the basis by which an asset receives an
energy market dispatch.
“operating block” means any one (1)
of the seven (7) price and quantity
pairs the ISO allocates to a pool
asset within a settlement interval for
the purposes of submitting bids and
offers.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 16: Insert
Comments / Reason for Position
(if any)
“operational deviation” means:
(i) a generating asset is unable to comply
with the ramping requirements set out in
rule 6.6.3(a) or 6.6.3(b), or
“operational deviation” means:
(i) a generating source asset is
unable to comply with the
ramping requirements set out in
section 4 of subsection 203.3 of
the ISO rules, Delivery
Requirements for Energy; or
(ii) a generating source asset
operating in generating asset
steady state varies outside its
allowable dispatch variance,
due to force majeure or any other
circumstances related to the
operation of the generating source
asset which could reasonably be
expected to affect the available
The AESO proposes to
amend this definition to
update defined terms and
cross references to sections
of the ISO rules.
Comment # 17: Insert
Comments / Reason for Position
(if any)
(ii) a generating asset operating in
generating asset steady state varies
outside its ADV
due to force majeure or any other
circumstances related to the operation of the
generating asset which could reasonably
be expected to affect the available
capability or safety of the generating
Issued for Stakeholder Consultation: 2012-07-17
Page 10 of 27
asset, third party facilities, contracts or
arrangements, the environment, personnel
working at the generating asset or the
public.
capability or safety of the generating
source asset, third party facilities,
contracts or arrangements, the
environment, personnel working at
the generating source asset or the
public.
“pool asset” means a generating unit, an
aggregated generating facility, a load, an
export service or an import service identified
by a pool ID and registered to a pool
participant.
“pool asset” means one (1) or more
generating units, aggregated
generating facilities, load assets,
import assets or export assets,
identified by a single pool ID the ISO
assigns, and registered to a pool
participant.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 18: Insert
Comments / Reason for Position
(if any)
“pool price” as defined in the Act means the
price for each hour, in $/MWh, established
and reported by the ISO, in accordance with
the ISO rules, for electric energy exchanged
through the power pool.
“pool price” as defined in the Act
means the price for each hour, in
$/MWh, established and reported by
the ISO, in accordance with the ISO
rules, for electric energy exchanged
through the power pool.
The AESO proposes to
amend this definition to
update defined terms.
Comment # 19: Insert
Comments / Reason for Position
(if any)
“ramp rate” means the rate at which an
asset will change its level of supply or
demand in MW per minute in response to an
energy market dispatch or directive.
“ramp rate” means the rate at which a
pool asset is able to change its level
of production, in MW per minute, in
response to a dispatch or directive.
The AESO proposes to
amend this definition to
update defined terms.
Comment # 20: Insert
Comments / Reason for Position
(if any)
“ramping” means the state of operation for a
generating asset that begins at the
specified effective time indicated on the most
current energy market dispatch and
continues until the point in time the
generating asset has reached the quantity
(MW) specified in the energy market
“ramping” means changing the
production of a generating source
asset and begins at the effective time
specified in the most current dispatch
and continues until the time the
source asset has reached the MW
specified in the dispatch, plus or
The AESO proposes to
amend this definition to
update defined terms.
Comment # 21: Insert
Comments / Reason for Position
(if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 11 of 27
dispatch, plus or minus the ADV for that
generating asset.
minus the allowable dispatch
variance for that source asset.
“scheduled generator outage” means the
period of time as planned by the owner of a
generating unit during which that
generating unit is partially or fully removed,
derated from, or otherwise is not physically
or mechanically available for service by the
owner due to planned or scheduled
maintenance or repairs to any of the plant,
equipment or components of the generating
unit.
“scheduled generator outage”
means the period of time as planned
by the legal owner of a generating
unit or the legal owner of an
aggregated generating facility
during which that generating unit or
aggregated generating facility is
partially or fully removed, derated
from, or otherwise is not physically or
mechanically available for service due
to planned or scheduled maintenance
or repairs to any of the plant,
equipment or components of the
generating unit.
The AESO proposes to
amend this definition to
update defined terms.
Comment # 22: Insert
Comments / Reason for Position
(if any)
"sink asset" means a load, export volume
or other power pool transaction represented
by an ISO identifier that enables a pool
participant to submit bids, operating
constraints, ancillary service declarations
and/or identify net settlement instruction
MWh volumes bought from a seller to be
settled in the power pool.
"sink asset" is a subcategory of pool
asset and means one (1) or more
load assets or export assets.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 23: Insert
Comments / Reason for Position
(if any)
"source asset" means a generating asset,
import volume, or other power pool
transaction represented by an ISO identifier
that enables a pool participant to submit
offers, operating constraints, ancillary
service declarations and/or identify net
settlement instruction MWh volumes sold
"source asset" is a subcategory of
pool asset and means one (1) or
more aggregated generating
facilities, generating units, or import
assets.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 24: Insert
Comments / Reason for Position
(if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 12 of 27
to a purchaser to be settled in the power
pool.
“transmission must-run (TMR)” means a
generator is constrained on to operate at a
minimum specified MW output level in order
to maintain system security.
Definitions – Removed
Existing
“transmission must-run” means a
service whereby a generating source
asset that is not in merit may receive
a directive to operate at a minimum
specified MW output level in order to
maintain system security.
The AESO proposes to
amend this definition to
update defined terms and
provide more clarity.
Comment # 25: Insert
Comments / Reason for Position
(if any)
Proposed
Rationale
Stakeholder Comments and/or
Alternate Proposal
Comment # 26 Insert Comments
/ Reason for Position (if any)
“advance energy dispatch” means a
dispatch of one or more blocks of energy
for a specified future time. Advance energy
dispatches are issued in anticipation of
expected demand changes or to spread
workload. Under normal operating
conditions, interconnected balancing
authorities do not allow changing of
interchange schedules without an advance
energy dispatch.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
“ancillary service declaration” mean the
ancillary service declarations identified under
rule 3.6.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “an offer
for ancillary services”.
Comment # 27 Insert Comments
/ Reason for Position (if any)
“ancillary service directive” means
direction given to an ancillary service
provider by the system controller with the
understanding that the provider must
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “a
Comment # 28 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
AESO Reply
Page 13 of 27
comply, accepting that the facility owner
retains the right and duty to take any action it
deems prudent to protect the facility, its
personnel, the public or the environment.
directive for ancillary
services”.
“ancillary service dispatch” means
direction given to an ancillary service
provider by the system controller to
request the provider to supply ancillary
services within those criteria agreed upon
between the system controller and the
ancillary service provider.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “a
dispatch for ancillary
services”.
Comment # 29 Insert Comments
/ Reason for Position (if any)
“ancillary service exchanges” means
market entities for the purpose of buying and
selling contracts for ancillary services.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 30 Insert Comments
/ Reason for Position (if any)
“ancillary service merit order” means a list
of all qualified ancillary service provider
assets and resources for each type of
ancillary service sorted in order of
preference for ancillary service dispatch.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “merit
order for ancillary services”.
Comment # 31 Insert Comments
/ Reason for Position (if any)
“ancillary service provider” means the
pool participant holding the ancillary
service dispatch rights for an asset.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “a pool
participant providing
ancillary services”.
Comment # 32 Insert Comments
/ Reason for Position (if any)
"asset marginal price" means the price in
$/MWh of a pool participant's asset
determined in accordance with rule 6.3.9.2.
The AESO proposes to delete
this term as its meaning has
been embedded in new ISO
Comment # 33 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 14 of 27
rules Section 201.6 Pricing.
“automated dispatch and messaging
system” means the software and
procedures used to communicate between
the system controller and market
participants for real time management of
the AIES.
The AESO proposes to delete
this term in favour of its
meaning as the proper name
of a system and will capitalize
all references.
Comment # 34 Insert Comments
/ Reason for Position (if any)
“bid load” means the price responsive
load bid into the ISO that can be
dispatched for interruption at a set price to
avoid high purchaser energy supply costs.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 35 Insert Comments
/ Reason for Position (if any)
“block” see operating block.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with
“operating block”.
Comment # 36 Insert Comments
/ Reason for Position (if any)
“constrained down” means, in respect of
any generating unit, being directed to a
lower MW output than the in merit MW
output, as a result of a directive by the
system controller.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced by specifically
writing out the meaning in any
applicable section of the ISO
rules.
Comment # 37 Insert Comments
/ Reason for Position (if any)
“constrained on” means, in respect of a
generating unit, being directed on while not
in merit, as a result of a directive by the
system controller.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced by specifically
writing out the meaning in any
applicable section of the ISO
Comment # 38 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 15 of 27
rules.
“current DDS submission” means a valid
DDS offer submitted in accordance with rule
3.5.5 and includes any revision of prices and
quantities in MW submitted for such DDS
offer in accordance with rules 3.5.5.2 and
3.5.5.3.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 39 Insert Comments
/ Reason for Position (if any)
“current submission” means a valid offer
or bid submitted in accordance with rule
3.5.1 and includes any revision submitted of
prices and quantities in MW for that offer or
bid in accordance with rule 3.5.3.2 b),
3.5.3.3, 3.5.4.2 b) or 3.5.4.3.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 40 Insert Comments
/ Reason for Position (if any)
“DDS block” means the discrete MW level
as identified within an offer and is the basis
by which an asset receives a DDS
dispatch.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “an
operating block for dispatch
down service”.
Comment # 41 Insert Comments
/ Reason for Position (if any)
“DDS dispatch” means a direction given by
the system controller to a pool
participant to provide DDS.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “a
dispatch for dispatch down
service”.
Comment # 42 Insert Comments
/ Reason for Position (if any)
“DDS dispatched off” means a DDS
dispatch has been issued for the
termination of the provision of DDS.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 43 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 16 of 27
“DDS dispatched on” means a DDS
dispatch has been issued for the provision
of DDS.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 44 Insert Comments
/ Reason for Position (if any)
“DDS merit order” means a list of all valid
DDS offers by DDS providers for a
settlement interval consisting of DDS
blocks sorted in order of price.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “merit
order for dispatch down
service”.
Comment # 45 Insert Comments
/ Reason for Position (if any)
“DDS offer” means a submission made by
a pool participant in accordance with rule
3.5.5.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “an offer
for dispatch down service”.
Comment # 46 Insert Comments
/ Reason for Position (if any)
“dispatched off” means, when applied to
bids in the energy market merit order, a
dispatch has been issued for the
termination of energy consumption. When
applied to offers in the energy market
merit order, it means a dispatch has been
issued for the termination of energy
delivery.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced by specifically
writing out the meaning in any
applicable section of the ISO
rules.
Comment # 47 Insert Comments
/ Reason for Position (if any)
“dispatched on” means, when applied to
bids in the energy market merit order, a
dispatch has been issued for the
consumption of electrical energy. When
applied to offers in the energy market merit
order, it means a dispatch has been issued
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced by specifically
writing out the meaning in any
applicable section of the ISO
Comment # 48 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 17 of 27
for the delivery of electrical energy.
rules.
“DOS One (1)hour” means opportunity
service to system access customers who
are recallable within one (1) hour and which
is provided when sufficient transmission
capacity exists to accommodate the capacity
scheduled for opportunity service.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 49 Insert Comments
/ Reason for Position (if any)
“DOS seven (7) minutes” means
opportunity service to system access
customers who are recallable within seven
(7) minutes and which is provided when
sufficient transmission capacity exists to
accommodate the capacity scheduled for
opportunity service.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 50 Insert Comments
/ Reason for Position (if any)
“DOS standard” means opportunity
service to system access customers
which is provided when sufficient
transmission capacity exists to
accommodate the capacity scheduled for
opportunity service.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 51 Insert Comments
/ Reason for Position (if any)
“electronic submission facilities” means
the electronic facilities through which a pool
participant interacts with the ISO, and as
described in the pool participant manual.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 52 Insert Comments
/ Reason for Position (if any)
“energy consumption” means for all pool
participants • not exporting from the AIES
through use of an interconnection, the
metered MWh value for the settlement
interval representing the deemed electric
The AESO proposes to delete
this term in favour of the plain
language meaning of the
words.
Comment # 53 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 18 of 27
energy received by the pool participant as
recorded in the ISO data base. • exporting
from the AIES through use of an
interconnection, the energy market
dispatch MW volume to be transferred
across that interconnection during the
settlement interval and as recorded in the
dispatch log.
“energy market dispatch” means a
direction given by the system controller to
a pool participant to cause a specified
amount of electric energy to be provided to
or taken off the AIES based on the energy
market merit order and includes an
instruction to synchronize, desynchronize,
increase or decrease electrical output.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and
where it is used in the ISO
OPPs, there is no bolding so
it has the plain language
meaning of “energy market”
plus the defined meaning of
“dispatch”.
Comment # 54 Insert Comments
/ Reason for Position (if any)
“energy market merit order” means the
list of all valid offers and bids for a
settlement interval sorted in order of offer
and bid price blocks.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “merit
order for the energy market”.
Where it is used in the OPPs,
there is no bolding so it has
the plain language meaning
of “energy market” plus the
defined meaning of “merit
order”.
Comment # 55 Insert Comments
/ Reason for Position (if any)
“energy market suspension” means an
action which involves interrupting the normal
method of calculating the system marginal
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
Comment # 56 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 19 of 27
price as outlined in the ISO rules, and the
system controller issuing generation, load
and transmission dispatches and directives
in order to return the AIES to a reliable and
secure state.
OPPs.
“energy production” means for all pool
participants • not importing to the AIES
through use of an interconnection, the
metered MWh value for the settlement
interval representing the actual electric
energy supplied by the pool participant as
recorded in the ISO data base. • importing to
the AIES through use of an
interconnection, the energy market
dispatch MW volume to be transferred
across that interconnection during the
settlement interval and as recorded in the
dispatch log.
The AESO proposes to delete
this term in favour of the plain
language meaning of the
words.
Comment # 57 Insert Comments
/ Reason for Position (if any)
“Energy Trading System (ETS)” means the
Internet-based system used to manage
electricity market transactions.
The AESO proposes to delete
this term in favour of its use
as simply a proper name.
Any additional detail will be
included in information
documents.
Comment # 58 Insert Comments
/ Reason for Position (if any)
“exporter” means a consumer of electric
energy for delivery out of Alberta.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and
where it is used in OPPs 301
and 302, the plain language
meaning of the term is
sufficient.
Comment # 59 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 20 of 27
“forecast pool price” means the price in
$/MWh calculated for each settlement
interval in a forecast scheduling period in
accordance with rule 5.3.1.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or the
ISO OPPs.
Comment # 60 Insert Comments
/ Reason for Position (if any)
“importer” means an importer of electric
energy to Alberta.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or the
ISO OPPs.
Comment # 61 Insert Comments
/ Reason for Position (if any)
“load curtailment priority (LCP)” means
that priority be given to interrupting industrial
and large commercial customers during
supply shortfall events on a provincial basis.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 62 Insert Comments
/ Reason for Position (if any)
“long lead time energy” means energy
produced by a long lead time generating
asset.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “energy
from a long lead time asset”.
Comment # 63 Insert Comments
/ Reason for Position (if any)
“long lead time directive” means a
directive issued by the system controller
to a pool participant to provide long lead
time energy.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “a
directive to a long lead time
asset”.
Comment # 64 Insert Comments
/ Reason for Position (if any)
“losses” means the energy that is lost
through the process of transmitting electric
energy.
The AESO proposes to delete
this term in favour of the plain
language meaning of the
words.
Comment # 65 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 21 of 27
“Mega VAr” or “MVAr” means 1 million Vars
or 1000 kiloVArs of reactive power.
The AESO proposes to delete
this term as it is a well
understood industry
abbreviation.
Comment # 66 Insert Comments
/ Reason for Position (if any)
“MW” means megawatt(s) or means 1 million
watts or 1000 kilowatts of real electrical
power.
The AESO proposes to delete
this term as it is a well
understood industry
abbreviation.
Comment # 67 Insert Comments
/ Reason for Position (if any)
“MWh” means megawatt hour(s). A unit of
energy.
The AESO proposes to delete
this term as it is a well
understood industry
abbreviation.
Comment # 68 Insert Comments
/ Reason for Position (if any)
“non-zero block” means any block of
energy with volume that is not 0 MW.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 69 Insert Comments
/ Reason for Position (if any)
“operating constraint” means a constraint
as identified in electronic submission
facilities.
The AESO proposes to delete
this term in favour of the plain
language meaning of the
words.
Comment # 70 Insert Comments
/ Reason for Position (if any)
“opportunity service customers” means
those system access customers which
meet the criteria for opportunity service, as
defined in the ISO tariff.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 71 Insert Comments
/ Reason for Position (if any)
“physical capacity” means the maximum
amount of electric power which a
transmission facility, as rated by a TFO, is
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
Comment # 72 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 22 of 27
able to transmit.
OPPs.
“pool participant manual” means the ISO
reference document that provides both
technical guidance to pool participants
wishing to execute ISO electronic
interactions with the ISO and specific
directions in using ISO sanctioned software
and procedures.
The AESO proposes to delete
this term and where
necessary, simply refer to the
proper title of applicable
documents.
Comment # 73 Insert Comments
/ Reason for Position (if any)
“power purchase arrangement” as defined
in the Act means a power purchase
arrangement included in Alberta Regulation
AR 175/2000, but does not include:(i) the
power purchase arrangement that applies to
the H.R. Milner generating unit;(ii) the power
purchase arrangement that applies to the
Sturgeon generating units;(iii) a power
purchase arrangement that expires in
accordance with the unit effective term
completion date specified in the power
purchase arrangement;(iv) a power purchase
arrangement that is terminated under section
15.2 of the power purchase arrangement;(v)
a power purchase arrangement that is
terminated by the balancing pool.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules. Where
it is used in ISO OPP 601, it
is a well understood industry
term.
Comment # 74 Insert Comments
/ Reason for Position (if any)
“PPA buyer” means the entity holding
energy rights as acquired from the original
purchase of a power purchase
arrangement as contemplated in the Act, or
as subsequently transferred or assigned in
whole per Article 18 of the thermal power
purchase arrangements.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules. Where
it is used in ISO OPP 601, it
is a well understood industry
term.
Comment # 75 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 23 of 27
“price block” means the discrete block
identified in $/MWh for which a pool
participant has placed an offer or bid within
a defined MW level (see operating block).
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 76 Insert Comments
/ Reason for Position (if any)
“price responsive load” means load which,
by owner discretion, may be removed or
connected to the AIES as a function of the
system marginal price for electricity.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs
Comment # 77 Insert Comments
/ Reason for Position (if any)
“ratchet level” shall have the meaning
ascribed thereto in rate schedule DTS.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 78 Insert Comments
/ Reason for Position (if any)
“rated capacity” means the state of
operation for a generating asset that begins
at the specified effective time indicated on
the most current energy market dispatch
and continues until the point in time the
generating asset has reached the quantity
(MW) specified in the enrgy market
dispatch, plus or minus the ADV for that
generating asset.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 79 Insert Comments
/ Reason for Position (if any)
“reference price” means the price in $/MWh
calculated and determined by the ISO in
accordance with rule 3.10.
The AESO proposes to delete
this term as its meaning has
been embedded in the new
ISO rules Section 201.6
Pricing.
Comment # 80 Insert Comments
/ Reason for Position (if any)
"registered aggregate asset" means:
- in relation to multiple generating
The AESO proposes to delete
this term as it is no longer
Comment # 81 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 24 of 27
-
-
assets physically located at a single
site, that a single offer must be
submitted for the cumulative capability
of the generators located at the site; or
in relation to certain run of river hydro
generation schemes that a single offer
must be submitted for the cumulative
capability of the registered group of
generators; or
in relation to certain generating assets
or demand management processes that
are operated via a single command and
control scheme, that a single offer or
bid must be submitted for the
cumulative capability of the
management scheme.
used in the ISO rules or ISO
OPPs.
“review committee” means the committee
formed under rule 11.1.3.1.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 82 Insert Comments
/ Reason for Position (if any)
“rules” see ISO rules.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules and has
been replaced with “ISO
rules”. Where it is used in
ISO OPP 1304, there is no
bolding and its meaning is
clearly understood to be the
ISO rules.
Comment # 83 Insert Comments
/ Reason for Position (if any)
“settlement zone” means the collection of
sites that are jointly settled by a load
The AESO proposes to delete
this term as it is no longer
Comment # 84 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 25 of 27
settlement system and over which UFE is
calculated and allocated.
used in the ISO rules or ISO
OPPs.
“software and procedures” means any and
all technical software used for ISO
communications and specific directions in
applying such software.
The AESO proposes to delete
this term in favour of the plain
language meaning of the
words.
Comment # 85 Insert Comments
/ Reason for Position (if any)
“standing offer or standing bid” means
those offers or bids submitted in
accordance with rule 3.7.
The AESO proposes to delete
this term as its meaning has
been embedded in the new
ISO rules Section 203.1
Offers and Bids for Energy.
Comment # 86 Insert Comments
/ Reason for Position (if any)
“supply shortfall” is a condition when there
is insufficient energy offered in the energy
market to meet the requirements of load in
Alberta.
The AESO proposes to delete
this term as its meaning has
been embedded in the new
ISO rules Section 202.2
Supply Shortfall and Short
Term Adequacy.
Comment # 87 Insert Comments
/ Reason for Position (if any)
“supply shortfall directive” means a
directive issued for supply shortfall
energy as part of the ISO supply shortfall
operating policy and procedures.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs and has been replaced
with “a directive for supply
shortfall energy”.
Comment # 88 Insert Comments
/ Reason for Position (if any)
“supply shortfall energy” means a
generating asset’s maximum available
electric energy in excess of what is offered in
operating blocks and active ancillary
services, the asset is providing, which could
be made available to the AIES for each
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 89 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 26 of 27
settlement interval.
“system marginal price” means the price
in $/MWh determined for each minute of a
settlement interval in accordance with
rule 6.3.9.2.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 90 Insert Comments
/ Reason for Position (if any)
“VArs” means volt-amp reactive, a measure
of reactive power.
The AESO proposes to delete
this term as it is a well
understood industry
abbreviation.
Comment # 91 Insert Comments
/ Reason for Position (if any)
“virtual metering point” means an effective
point of measurement, that may or may not
be physically locatable, where active energy
or reactive energy is deemed to have been
transferred through the point that is derived
from one or more metering points.
The AESO proposes to delete
this term as it is no longer
used in the ISO rules or ISO
OPPs.
Comment # 92 Insert Comments
/ Reason for Position (if any)
Issued for Stakeholder Consultation: 2012-07-17
Page 27 of 27