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Calendar for Submission of Reliability Assessments Information

Market participants are required under the Market Rules to provide information to the IESO to enable the IESO to conduct reliability assessments (Chapter 5, section 7.5).

The submission deadlines for information for the 18-Month Outlook and annual reliability assessment are listed in the tables below. These submissions are required each calendar year. Details on the content and format of the information to be provided are available under Market Administration Manual 2.8 and Market Administration Manual 2.11. Associated forms are listed below.

Deadlines for Generator Information Submissions (10 years and 6 months information)

​Submission Due DateUse Form
​Annual Submission​April 1​1230
​Updates to Annual Submission​As required​1230

Deadlines for Transmitter Information Submissions

Submission                            Due Date ​Use FormInformation for
​Q1​January 1​1484​18 months
​Q2​April 1​1494​10 years and 6 months
​Q3​July 1​1484​18 months
​Q4​October 1​1484​18 months