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Technical Interfaces

This page contains information about the current technical interfaces with IESO's market systems. These interfaces are categorized by the functions performed by the IESO and/or market participants. Choose a functional area below to view all relevant documents.

Upcoming changes to these interfaces are listed on the Pending Changes page. Procedural information for each function is included on the Rules & Manuals page.

Show New and Updated Documents Only:

Transmission Rights

GUIDES/MANUALS

Status Document Description Last Updated Link
 Transmission Rights Auction System - Market Participant User Guide (IMO_GDE_0004) This document provides a description of the functionality of the IESO's Transmission Rights Auction which is available to those market participants who have registered to be TR participants. 12/7/2011 pdf 

REPORT TEMPLATES & SAMPLES

Status Document Description Last Updated Publishing Frequency Public/ MP Confidential Sample
 Daily TR Hourly Zonal Price Report This report enables you to view, in a daily format, the hourly zonal prices determined by the last projected market price (the zonal price from the last run of the Predispatch Unconstrained schedule) for energy. The report looks backward for 60 days to ensure that any price changes are captured in the report.

The report can be accessed through the user interface of the IESO Web site for the previous 3 days of data. Data from previous days, up to 12 months into the past, are available from the IESO Reports site. 
4/18/2002 Daily at 6:30 EST Public html 
 Monthly TR Hourly Zonal Price Report This report enables you to view, in a monthly format, the hourly zonal prices determined by the last projected market price (the zonal price from the last run of the Predispatch Unconstrained schedule) for energy. The report looks backward for 60 days to ensure that any price changes are captured in the report.

Data from previous days, up to 12 months into the past (or up to Market Commencement), are available and can be accessed via the IESO Reports site. 
4/18/2002 Daily at 6:30 EST Public csv 
 Daily TR Historical Interface Flow, Schedule and TTC Report This report enables you to view, in a daily format, the actual hourly average Schedules and Flows as a result of scheduled and off market transactions between Ontario and an intertie zone. (Negative values denote flows into Ontario)

The report also enables you to view the Total Transfer Capability (TTC) used for determining the maximum import / export market schedules between Ontario and an Intertie Zone. (TTC IN refers to flows from the external Intertie zone into Ontario). The report looks backward for 60 days to ensure that any price changes are captured in the report.

This report can be accessed through the user interface of the IESO Web site for the previous 3 days of data. Data from previous days, up to 12 months into the past, are available from the IESO Reports site. 
4/18/2002 Daily at 6:30 EST Public html 
 Monthly TR Historical Interface Flow, Schedule and TTC Report As with the daily report, this report enables you to view, in a monthly format, the actual hourly average Schedules and Flows as a result of scheduled and off market transactions between Ontario and an intertie zone. The report looks backward for 60 days to ensure that any price changes are captured in the report.

Data from previous days, up to 12 months into the past (or up to Market Commencement), are available and can be accessed via the IESO Reports site. 
4/18/2002 Daily at 6:30 EST Public csv 
 Pre Auction MCP Report This report enables the TR Participant to view the Market Clearing Price at which each TR sold during all TR auction rounds held in the previous 18 months (or until market opening).

This report can be accessed through the user interface of the IESO Web site until the start of the TR period of validity. 
4/18/2002 A minimum of 30 days prior to the TR Auction Public html 
 Pre Auction TTC Report This report enables you to view the forecast of TTC used to determine the number of TRs that will be offered and the maximum number of TRs that may be available. The report also contains a link to the detailed TTC assessments used to identify any assumptions and applicable constraints that can limit the number of TRs that can be awarded.

This report can be accessed through the user interface of the IESO Web site until the start of the TR period of validity. 
4/18/2002 A minimum of 30 days prior to the TR Auction Public html 
 Post Auction MCP Report This report provides aggregated auction results after the TR auction round has been completed. The report identifies the total number of TRs awarded and the associated TR market clearing price for a particular path in a TR auction round.

The report will remain visible from the user interface page for thirty days from the TR Auction round completion. The report can be accessed through the IESO Web site. 
4/18/2002 Within 24 hours of auction closing Public html 
 Transmission Auction Participant Notification Report This report contains a TR Participantís results for a TR auction round. The TR Participant must have participated in a TR auction round specified by placing an accepted bid in order to receive a Participant Notification Report. The report provides notice of what transmission rights, if any, have been awarded and the resultant TR market clearing price. It also lists the round end time and the time structure. A report will be issued, regardless if a TR participant was successful or not.

The report can be accessed through the Market Participant Interface (MPI). 
7/18/2001 Within 24 hours of auction closing Confidential html 
 Transmission Auction Participant Bid History Report This report enables a TR participant to view TR bids submitted by them, and their status over the last 18 months. The TR participant must have participated in the TR auction round specified by placing an accepted bid in order to receive the Bid History Report.

The report can be accessed through the Market Participant Interface (MPI). 
7/18/2001 Within 24 hours of auction closing Confidential html 

Transmission Rights Auction Reports are available to the public via both the Public Web Site or the IESO Reports Site.

 

 
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