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News and Notices
A key part of the IESO's mandate is to ensure that market participants, interested stakeholders and the general public are informed of key issues and activities central to the evolution and operation of Ontario's wholesale electricity market.
All IESO email communications since the market opened in 2002 are catalogued on this page.
Communications are organized into several main subject areas accessible through the drop down list below.
IESO Technical System Outage Notifications and Reviewed/Administered Pricing Events are new subject areas included that were previously stored in the Calendars and Notices section.
The IESO publishes a weekly report that is sent to market participants and all public distribution lists each Thursday.
Several communications are combined into the weekly report that summarizes current and upcoming IESO activities.
In addition to the weekly report, urgent or time-sensitive communications are delivered on an as-needed basis and sent to the appropriate contact lists.
To receive the IESO weekly communication and to sign up for subject-specific distribution lists, please click here to subscribe.
Most Recent 25
| 29 Aug 2008 | Estimated Global Adjustment (GA) for August, 2008 |
| 28 Aug 2008 | Preliminary Release Plan for Release 20.1 Available |
| 21 Aug 2008 | September 16, 2008 IT Standing Committee Meeting (ITSC) Agenda Now Available |
| 21 Aug 2008 | Baseline Documents Revised and Posted for Market Participant Review |
| 21 Aug 2008 | Technical Panel Request for Stakeholder Review and Comment MR-00347 Linked Wheel Transaction Non-Energy Market Charges |
| 21 Aug 2008 | Update on Ontario Power Authority Schedules for Procurement Programs |
| 14 Aug 2008 | Invoices, Settlement Statements and other Reports Removed from the MPI in September |
| 14 Aug 2008 | Report Listing Page Update Adds Samples of XML Versions:Public Dispatch & Predispatch Reports |
| 14 Aug 2008 | Stakeholder Advisory Committee August 20 Meeting Reminder |
| 14 Aug 2008 | Technical Panel Decisions and Request for Stakeholder Review and Written Comment |
| 7 Aug 2008 | Reminder: Day-Ahead Price Forecast Survey Now On-line |
| 7 Aug 2008 | New Stakeholder Engagement Plan on Transmission Rights Market Review |
| 7 Aug 2008 | Feedback Request - Changes to Frequency of 18 Month Outlook |
| 7 Aug 2008 | North American Electric Reliability Corporation Seeks Reliability Standards Approval |
| 31 Jul 2008 | Estimated Global Adjustment (GA) for July, 2008 |
| 31 Jul 2008 | Fixed Global Adjustment (GA) Rate for August, 2008 Distributor Billing |
| 31 Jul 2008 | Electricity Market Monitoring Report for November, 2007 to April, 2008 |
| 31 Jul 2008 | Update on Day-Ahead Market Evolution |
| 31 Jul 2008 | Stakeholder Advisory Committee Meeting Set for August 20 |
| 31 Jul 2008 | Update to IESO Report Site Transition Roadmap Plans for September, 2008 (Release 20.0) |
| 24 Jul 2008 | Day-Ahead Price Forecast Survey Now On-line |
| 24 Jul 2008 | Final Release Plan for Release 20.0 Available for Review |
| 23 Jul 2008 | OPG Rebate Total Dollar Amount and AQEW for February 1, 2008 - April 30, 2008 |
| 22 Jul 2008 | Important Notice: Impact of New York ISO Tariff Amendment |
| 17 Jul 2008 | Update on IESO Holdings in Affected Asset-Backed Commercial Paper |
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