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Urgent Market Rule Amendments

​Amendments to the Market Rules can also be decided by the Urgent Rule Amendment Committee or the IESO Board. Urgent market rules amendments must be ratified by the IESO Board and come into force on the date specified in the Market Rule Amendment Proposal.


 

Market Rule NumberChapter/SectionTitleLast Updated

MR-00398-R00

Chapter 9, section 3.3.2

Correction to Limiting Payments to Exports during Negative Prices

27-Sept-2012

MR-00380-R00-R01

Chapter 9, sections 3.5.1A and 3.5.1D

Non-transmission Related Constrained Off Payments

31-Mar-2011

MR-00373-R00

Chapter 9 section 3.5.1C

Suspend CMSC for Constrained Off Dispatchable Loads

27-Aug-2010

MR-00323-R00

Chapter 9 section 3.8A

Day-Ahead Intertie Offer Guarantee Adjustment

27-Jun-2006

MR-00322-R00-R01

Chapter 9 section 3.8A

Day-Ahead Intertie Offer Guarantee and Real-Time negative CMSC

9-Jun-2006

MR-00315-R00

Chapter 9 section 3.5.8

Eliminate Congestion Management Settlement Credit Payments for Linked Wheeling Through Transactions

7-Apr-2006

MR-00309-R00

Chapter 7 sections 2.2.10 and 2.2.20

Provision of Black Start Capability by Self-Scheduling and Transitional Scheduling Generators

7-Dec-2005

MR-00243-ROO

Chapter 7 appendix 7.6

Urgent Market Rule Amendment: Limiting CMSC Payments to Constrained-off Exports on Uncontested Export Interties

21-Aug-2003

MR-00239-R00

Chapter 9 section 3.5

Eliminate CMSC Payments Associated with Negative Priced Offers

26-Jun-2003

MR-00238-R00

Chapter 7 section 8.4

Correcting Inappropriate Charges and Payments that may Occur Under Administrative Pricing

5-Jun-2003

MR-00233-R00

Chapter 9 section 5.1

Urgent Amendment to Market Power Mitigation Rebate Rules

2-May-2003

MR-00215-R00

Chapter 2 section 5.8.2A

Suspension of Deemed Credit Downgrade Resulting from Credit Watch Warning

19-Nov-2002

MR-00214-R00

Chapter 9 section 1.2

Bill 210 Consequential Market Rule Amendments

13-Dec-2002

MR-00204-R00-R01

Chapter 9 section 3.8A, 4.8

Eliminate Payment of Intertie Offer Guarantee for Wheeling Transactions

1-Aug-2002

Any individual may identify the need for an Urgent Rule Amendment using the Market Rule Amendment Submission Form. Urgent Rule Amendments may be identified as a result of the occurrence of a specific event in the market that requires an immediate amendment to the Market Rules. An urgent amendment to the Market Rules can be required for one or more of the following reasons:

  • To avoid, reduce the risk of, or mitigate the effects of conditions that affect the ability of the integrated power system to function normally

  • To avoid, reduce the risk of, or mitigate the effects of the abuse of market power

  • To implement standards or criteria of a standards authority

  • To avoid, reduce the risk of, or mitigate the effects of an unintended adverse effect of a market rule

Each submission should clearly identify the area of the rules under question, state the proposal, provide reasons for the proposed change, explicitly indicate that the amendment is urgent and identify which criteria was applied to make this determination.