Requirements for Suppliers in AMIL and AMMO
March 2008
Planning Requirements
1) Suppliers must identify to the AMIL or AMMO Balancing Authority (BA) the
“steel-in-the-ground resources” that are designated network resources for their
load. The suppliers shall provide copies of the Midwest ISO (MISO) Module E to
the Balancing Authority at least yearly as required by MISO and must provide
updates to MISO with copies to the Balancing Authority whenever network
resources change, either in source or magnitude. (This requirement will continue to
apply if AMIL and AMMO become Local Balancing Authorities if the Midwest ISO
(MISO) is assigned some BA functions as is contemplated with an ancillary services
market.)
2) If Supplier’s designated network resources are external to the MISO market, firm
transmission must be in place for delivery to the MISO market and corresponding
service must be in place through MISO for deliverability to AMMO or AMIL. If
Supplier’s identified resources are internal to the market, the units must be
deliverable to their load.
3) AMMO and AMIL are members of the Southeastern Electric Reliability Council
(SERC)-Gateway sub-region. Absent, a Planning Reserve Study (PRS), SERCGateway has a default planning reserve margin (PRM) requirement of 1.15.
However, the Midwest PRS Group (of which AMMO and AMIL are members)
has established a PRM of 1.143 for 2008 based on a study of the entire PRS
region. As such, suppliers’ identified capacity resources must be equal to, or
greater than, 1.143 times the projected monthly peak of their load in compliance
with those requirements.
4) The Supplier shall provide the Balancing Authority (or LBA) a list of its capacity
resources that are designated to serve the Suppliers obligation of 1.143 times their
forecasted load for that month. This notification should occur no less than one
business day prior to the start of any month in which the supplier’s load obligation
has changed or its resources are different than projected in previous Module E
submissions.
Day Ahead and Real Time Requirements
1) Suppliers’ identified capacity resources must be offered into the MISO market for
each operating day, both in the Day Ahead and Real Time markets, in which they
are physically capable of supplying energy. This must-offer requirement includes
the provision that the offers must reflect the entire “designated” capacity of the
unit(s) to the extent available. (If the identified resources consist of a fractional
share(s) of a unit, the offer must be made for the fractional share.) This must-offer
requirement comes from MISO tariff requirement, Module E.
2) Suppliers must at all times have sufficient capacity to cover their load obligation.
This includes sufficient capacity in the Day Ahead to cover 100% of the peak load
for the operating day. In Real Time, sufficient capacity must be available to cover
the actual load of the supplier at all times. Units that are offered into the Day
Ahead market that do not get committed or dispatched in Real-Time but remain
available, continue to count as capacity. Load obligation is defined to be the value
provided by the Ameren Transmission Services Business Center based on the
supplier’s obligations as a BGS and/or RES or independent load serving entity.
3) When a Suppliers’ identified resources are unavailable, or when their load
obligation exceeds the identified generation resources, Suppliers must purchase
capacity, or identify additional capacity to which they have rights, to cover their
load obligation. The replacement capacity must meet the same deliverability
requirements as in 2) above. This obligation for capacity to meet or exceed load
applies in the Day-Ahead and in Real-Time.
4) Replacement (or additional) capacity in the Real Time secured through units in
the MISO market must have Real Time Offers in place as soon as MISO market
rules permit after the purchase has been arranged but in no case later than the start
of the second operating hour. Replacement capacity outside of the MISO market
must have an energy schedule (tag) approved and flowing as soon as capacity has
been arranged (following the guidelines for energy tagging) in order to count
towards load sufficiency. Failure to secure, or identify, enough capacity to cover
the load obligation shall mean the Supplier will be designated to be in default.
5) When the AMIL or AMMO Balancing Authority Operator determines that load
has exceeded forecast such that a capacity deficiency is in effect, or whenever a
designated resource is not available such that a capacity deficiency is in effect, the
AMIL or AMMO BA Operator will notify the Supplier of the deficiency. This
correspondence is expected to consist of a phone call and either email or fax. The
Supplier will have 30 minutes to identify other capacity, or purchase replacement
capacity, to cover their load obligation. After securing replacement capacity, the
Supplier shall notify the AMIL or AMMO BA Operator of the specifics of that
replacement capacity including the specific unit (or system if outside the MISO
market), the MW amount, and the transmission reservation number as necessary.
6) If Supplier serves only loads that can be identified on the transmission system and
can be interrupted during capacity shortages without subjecting other loads to
interruption, Supplier’s load will be designated to be shed following directive
from the MISO RC or as determined by the Ameren Transmission Supervisor for
reliability reasons. For a Supplier whose load is commingled with other Supplier’s
loads, the Balancing Authority will arrange for the purchase of the necessary
capacity for which the Supplier will be financially responsible.
7) For both Day Ahead and Real Time, the Supplier shall notify the AMIL
Balancing Authority (or LBA) whenever its designated capacity resources change,
either in CPnode or MW amount, from that provided in section 4 – Planning
Requirements.
General Requirements
1) Suppliers shall provide a list of voice, facsimile, and email contacts to the AMIL
or AMMO Balancing Authority (or LBA) for resource adequacy issues. These
contacts are expected to be 24-hour contacts that can address capacity issues as
described above.
2) Suppliers shall notify the AMIL and AMMO BA Operators of real time issues by
phone call at 314-554-2998.