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

21 May 2008	IESO Licence Renewal Application
15 May 2008	Invitation to Breakfast Series for Small and Mid-Sized Businesses
15 May 2008	Stakeholder Advisory Committee Meeting Set for June 4
15 May 2008	Technical Panel Determination & Request for Stakeholder Review
8 May 2008	OEB & IESO Renew Protocol for Market Surveillance Panel
8 May 2008	Negative Prices to Appear on May 4 Preliminary Settlement Statement
8 May 2008	Day-Ahead Mechanisms - Material for May 15 Meeting Available Now
8 May 2008	Final Document Posted for Improving Enrolment & Registration Process
8 May 2008	IESO Board Appoints George Mychailenko to Technical Panel
1 May 2008	Fixed Global Adjustment (GA) Rate for May, 2008 Distributor Billing
1 May 2008	Peaking-Gas Facilities to be Integrated into IESO-Administered Markets
1 May 2008	IESO Board Decision on Day-ahead Electricity Price Forecast
1 May 2008	New Stakeholder Engagement Plan on IESO System Access
1 May 2008	Preliminary Assessments of the Day-Ahead Mechanisms - May 15 Meeting
1 May 2008	Revised Plan for Incorporating Compliance Guidelines (SE55)
1 May 2008	Technical Panel Decisions & Requests for Stakeholder Comment from April 23 Meeting
30 Apr 2008	Estimated Global Adjustment (GA) for April, 2008
24 Apr 2008	Ontario Energy Board Announces IESO Fees Case Decision for 2008
24 Apr 2008	Technical Interfaces Report Listing Page Updates
22 Apr 2008	OPG Rebate Total Dollar Amount and AQEW for Nov. 1, 2007 - Jan. 31, 2008
17 Apr 2008	IESO Concludes Resource Mix Proposed in IPSP is Operable
17 Apr 2008	Annual Review of Price Basis for Determining Prudential Support Obligations
17 Apr 2008	Bias Adjustment Factors for Real-time Intertie Failure Charges June 2008 to Nov. 2008
17 Apr 2008	Changes Made to Day-Ahead Stakeholder Engagement Plan
17 Apr 2008	Q1 Stakeholder Engagement Quarterly Report Now Available