2022 Transmission Rights Auction Schedule

The following table summarizes key activities and dates associated with the Transmission Rights (TR) Market in the calendar year 2022.

While it is the IESO’s intention to have the TR Auction activities occur on the dates proposed, the Market Rules allow for the TR Auction to occur anywhere within a specified period of time.

Should invoice payments not be received by the payment due date, the Transmission Rights shall not be issued to the TR bidder, and additional penalties shall be applied as outlined in Market Rules, Chapter 8, Section 4.20

Auction Name

TR Ownership Period

Pre-auction Publication

TR Deposits Due

TR Bid Window

Invoice Date

Payment Due Date

ST_20220201

Feb 1 to 28, 2022

December 10, 2021

January 4, 2022

January 11/12, 2022

January 24, 2022

January 26, 2022

LT_20220401

Apr 1, 2022 to Mar 31, 2023

December 17, 2021

Round 1 - January 10, 2022

Round 2 - January 13, 2022

Round 1 - January 17/18, 2022

Round 2 - January 20/21, 2022

January 31, 2022

February 2, 2022

ST_20220301

Mar 1 to 31, 2022

January 7, 2022

February 1, 2022

February 8/9, 2022

February 22, 2022

February 24, 2022

ST_20220401

Apr 1 to 30, 2022

February 7, 2022

March 2, 2022

March 9/10, 2022

March 21, 2022

March 23, 2022

ST_20220501

May 1 to 31, 2022

March 4, 2022

March 29, 2022

April 5/6, 2022

April 20, 2022

April 22, 2022

ST_20220601

Jun 1 to 30, 2022

April 8, 2022

May 3, 2022

May 10/11, 2022

May 24, 2022

May 26, 2022

LT_20220701

Jul 1, 2022 to Jun 30, 2023

April 14, 2022

Round 1 - May 9, 2022

Round 2 - May 12, 2022

Round 1 - May 16/17, 2022

Round 2 - May 19/20, 2022

May 31, 2022

June 2, 2022

ST_20220701

Jul 1 to 31, 2022

May 9, 2022

June 1, 2022

June 8/9, 2022

June 20, 2022

June 22, 2022

ST_20220801

Aug 1 to 31, 2022

June 10, 2022

July 5, 2022

July 12/13, 2022

July 25, 2022

July 27, 2022

ST_20220901

Sep 1 to 30, 2022

July 8, 2022

August 2, 2022

August 9/10, 2022

August 22, 2022

August 24, 2022

LT_20221001

Oct 1, 2022 to Sep 30, 2023

July 15, 2022

Round 1 - August 8, 2022

Round 2 - August 11, 2022

Round 1 - August 15/16, 2022

Round 2 - August 18/19, 2022

August 29, 2022

August 31, 2022

ST_20221001

Oct 1 to 31, 2022

August 8, 2022

August 30, 2022

September 7/8, 2022

September 19, 2022

September 21, 2022

ST_20221101

Nov 1 to 30, 2022

September 2, 2022

September 26, 2022

October 4/5, 2022

October 18, 2022

October 20, 2022

ST_20221201

Dec 1 to 31, 2022

October 7, 2022

November 1, 2022

November 8/9, 2022

November 21, 2022

November 23, 2022

LT_20230101

Jan 1, 2023 to Dec 31, 2023

October 14, 2022

Round 1 - November 4, 2022

Round 2 - November 9, 2022

Round 1 - November 14/15, 2022

Round 2 - November 17/18, 2022

November 28, 2022

November 30, 2022

ST_20230101

Jan 1 to 31, 2023

November 8, 2022

December 1, 2022

December 8/9, 2022

December 19, 2022

December 21, 2022

Preliminary Settlement Statement - 2 business days after trading day
Time to file a Notice of Disagreement - 2 business days after preliminary settlement statement is issued
Final Settlement Statement - 6 business days after trading day
Billing Period - Trading week (Sunday to Saturday)
Invoice - 6 business days after the end of the trading week (a Monday unless there is a holiday in the week)
Payment - Payments to IESO within 2 business days of invoice issue


The Pre Auction Publication date represents the market rule requirement for the publishing of the Transmission Rights Market Pre Auction reports. Actual publishing may occur earlier.

The TR Bid Window normally opens at 09:00 EST of the first day and closes at 17:00 EST of the second day.

The maximum number of transmission rights that can be allocated in each auction is determined by the process described in Market Manual 4.4.

Transmission Rights Auction Settlement information can be found in the Financial Market Settlement Schedule and Payment Calendar.