Summary of Major Changes from Draft 3.0 CMS PHASE 1 DRAFT MARKET RULES
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Summary of Major Changes from Draft 3.0
CMS PHASE 1 DRAFT MARKET RULES
“Group 1 Rules- Draft 4 and 5”
February 20, 2001ISO New England
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SECTION 1 - DEFINITIONS Clarified and added definitions based on
comments received: Deleted Base Supply Obligation, retained
Base Settlement Obligation Deleted CLL and Scheduled Dispatch Period Added External Transaction Modified numerous others for consistency
and clarification (Demand Bid, Fast Start Resource, Low Operating Limit, Self-decommit, Self-Schedule)
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SECTION 2 - SCHEDULING AND DISPATCH
Section 2.1- Scheduling and Dispatch Rights Added Self-Schedule reduction
language Clarified requests for changes 90
minutes prior to hour are evaluated first come, first served.
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.2 - Scheduling Process Forecast Schedule update now issued
every two hours. Load Forecast section revised to allow ISO
increased flexibility to utilize most current techniques to develop Forecast Demand
Section 2.3.1 - Dispatch Process Removed reference to MRP-14 with regard
to redeclarations in Real-Time
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.4 – Self-commitment Request must be made at least 2 hours
priors to next Forecast Schedule update No Self-decommitment allowed except in
Excess Generation Condition May request to advance commitment
time or delay de-commitment times that were approved Day-Ahead
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.4 – Self-commitment Clarified Fast Start Resource treatment Requests may consist of two Energy
Blocks First block zero or negative price Second block zero price
ISO approves/denies request no later than 30 minutes prior to next Forecast Schedule update
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.5 – Self-Schedules Self-Schedule requests made 90
minutes prior to Trading Interval Fast Start Resources included May not request to reduce Self-
Schedule below amounts Self-Scheduled Day-Ahead
Self-Schedule requests evaluated on one Trading Interval basis
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.5 – Self-Schedules ISO to approve/deny SS requests no
later than 30 minutes prior to Trading Interval
ISO may deny request if request may impact unit commitment
Prices must be zero for Supply Offer SS increases and 9999 for Demand Bid SS increases.
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.6 – Fast Start Resources Clarified dispatch determination rules
for both Generators and Dispatchable Loads
Created separate Section (2.3.7) for dispatch of transactions at External Nodes
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.8 – EET’s Modified language associated with
settlements of pool-to-pool Emergency purchases
Pool-to-pool purchase costs initially collected from Participant’s with Settlement Obligations pro-rata based on Nodal Price at External Node and MW amount of purchase
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.8 – EET’s
Payments to other CA by ISO in excess of amounts collected are collected from Participants pro-rata based on negative ANI.
Payments to other CA by ISO that are less than amounts collected are paid to Participants pro-rata based on negative ANI.
EET Uplift collected from Participants based on negative ANI
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.10 – Excess Gen Excess Generation Condition:
Sum of SS plus sum of LOL’s not meeting Min Run Time exceeds Forecast Demand plus Demand Bids at External Nodes
SS reduced pro-rata to LOL Participants may request de-
commitment
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.10 – Excess Gen Excess Generation Emergency
Sum of LOL’s exceeds Forecast Demand plus Demand Bids at External Nodes
ISO issues Dispatch Instructions to de-commit.
Prices allowed to go negative based on Supply Offer prices submitted
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SECTION 2 - SCHEDULING AND DISPATCH – Cont’d
Section 2.3.10 – Excess Gen Excess Generation Termination
Excess Generation Emergency cancelled when dispatch above LOL in an amount equal to MWs de-committed is achieved or unit is committed.
Excess Generation Condition is cancelled when all SS are restored.
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SECTION 3 - SUPPLY OFFERS AND DEMAND BIDS
Section 3.2.2 - Self-Schedule Submission Removed Claimed Low Limit (CLL). Two Self-Schedule blocks allowed for
Generator Supply Offers: Must indicate that block 1 and/or block 2
are Self-Schedules First block equals LOL and must be zero or
negative Second block must be equal to zero
Blocks not Self-Scheduled must have positive price.
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SECTION 3 - SUPPLY OFFERS AND DEMAND BIDS
Section 3.3.1 - Self-Schedule Submission Dispatchable Load Self-Schedules must
be so indicated and price must be equal to 9999
Section 3.4 – External Nodes Supply Offer or Demand Bid limited to
single price/quantity pair Clarified Through Transaction submittal:
Only price associated with “up-to” congestion needs to be submitted.
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SECTION 4 - BILATERAL CONTRACTS
Corrected description of Firm Obligation Transfer Contract
Added curtailment language for ICAP Sales
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SECTION 5 - ENERGY
Section 5.3.1 – Clearing Price Eligibility
Clarified language describing Generator eligibility to set Clearing Price
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SECTION 5 - ENERGY
Appendix 5E – Emergency Sales Removed all requirements to recalculate
Nodal Prices for emergency sales Cost of sale initially collected from
Participant’s based on pro-rata share of Settlement Obligation
Participants paid amounts received by ISO from other Control Area based on pro-rata share of Settlement Obligation
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SECTION 6 - SETTLEMENTS
Section 6.4.1 – Settlement Amounts Clarified calculation of Settlement
Obligations and Supply Obligations Retained Base Settlement Obligation
specifically for ease of use with reference to Obligation Transfer Contracts
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SECTIONS 7, 8, 9, 10 – AGC, TMNSR, TMOR AND TMSR
No major changes.