Transcript Day Ahead Market Working Group

Day Ahead Market
Working Group
April 14, 2003
Agenda
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Discussion of SMD-style DAM
• review questions posed by the DAM WG and Coral regarding the SMDstyle DAM
Discussion of Coral Bid-Ask Trade DAM
• resolution of status
NYISO Imports/Exports in DAM
Next Steps -- April 22 Face-to-Face
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NYISO Imports/Exports in DAM
Introduction:
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Reference to NYISO Market Participant Manuals and Technical Bulletins @
http://www.nyiso.com/services/documents.html
Examine NYISO as potential IMO model
Consider current RT Intertie procedures relative to DAM
Unique elements of NYISO
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NYISO Imports/Exports in DAM
Submitting Import/Export Bids:
• All transactions from external control areas are required to be submitted into
the NERC ETAG system prior to becoming active schedules
• DAM closes 05:00 – Results posted 11:00
• E-Tag changes can be made before DAM closes, after DAM posts results,
but before 22:00 (All times prior day)
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NYISO Imports/Exports in DAM
NYISO Reference Bus:
• External generators and loads submit transaction bids into the NYISO DAM
against the Marcy LBMP reference bus - NYISO_LBMP_REFERENCE
• Used to calculate all marginal loss and congestion costs in the system
• External energy sales or purchases are settled on the LBMP (Locational
Based Marginal Price)
• LBMP = Reference Bus Energy $ + Losses - Congestion
• For Ontario Zone - source bus (exports to NYISO) or sink bus (imports from
NYISO) is - OH_GEN_BRUCE or OH_LOAD_BRUCE
• Additional points for PJM, NE and HQ
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NYISO Imports/Exports in DAM
Scheduling:
• Import/Export bids are approved through SCUC or BME
• Schedules must be coordinated with corresponding control area
• With respect to BME and for economic priority, default price -$1000
assigned for imports
• External transactions scheduled in the Day-Ahead Market (DAM) have
economic priority over resources bid competitively in the Hour-Ahead
Market (HAM) in the determination of which transactions are permitted to
flow in real-time
• Transactions are financially binding in DAM regardless if curtailed
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NYISO Imports/Exports in DAM
Multi-Hour Block Transactions:
• DA firm external transaction bids may be offered, specifying a minimum
run-time, and if accepted, awarded a multi-hour block schedule at the bid
MW amount
• Evaluated in the Day-Ahead Market relative to alternative offers
• Easier to coordinate scheduled external transactions with corresponding
transactions in neighboring control areas
• Checkout process with the neighboring control area confirms each hour of
a DAM scheduled multi-hour block transaction independently
• Transaction hours are subject to curtailment in real-time based upon HAM
bid parameters
• Minimum run times will only be honoured within a commitment day, i.e.,
beginning Hour 1 ending Hour 24
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NYISO Imports/Exports in DAM
Pre-Scheduling Transactions:
• MP can preschedule an external import or export transaction with the
NYISO up to 18 months prior to the transaction date
• Acceptance is determined by the availability of adequate hourly ramping
and transmission capacity related to the affected external interface
• Given an economic priority over other external transactions that are not
prescheduled - will be a “price taker” and the entities involved agree to
accept the DAM clearing prices in effect for the transaction
• Submission deadline - 2:00 PM two days before transaction date
• Imports/Exports are assigned bid prices of -$1000/+$1000 to ensure
priority scheduling in DAM
• Parameters of DAM bids cannot be altered after submission deadline and
if withdrawals are not approved then bids are financially binding once
scheduled
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NYISO Imports/Exports in DAM
IMO/NYISO Transaction Scheduling:
• Currently IMO and NYISO use a specific transaction scheduling protocol to
schedule transactions and ensure fair and efficient use of the IMO/NYISO
interface
• Introduction of a DAM in Ontario will likely require a review and modification
to this protocol to ensure resolution of new seams issues that may arise
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Discussion Points
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Ramp Capacity or Transfer Capabilities across interties
Transmission Congestion Costs - TCC’s
Financial Transmission Rights - FTRs
Transmission Usage Costs TUCs
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Next Meetings
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April 22 WG Face-to-Face meeting
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