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    Tools > Informational Postings > TransCanada Canadian Mainline > Non-Critical Notices

    TransCanada Canadian Mainline Non-Critical Notices

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    All information here is provided as a service and information is not guaranteed to be accurate. PipeRiv is not responsible for any incorrect information.

    Type Posted Effective End Identifier Status Subject Response
    Maintenance 08/06/26 08/07/26 3374724899 TC Energy Planned Maintenance August 7-August 17, 2026
    Other 08/06/26 08/06/26 3374724898 PALS Transactions - July 2026
    Other 08/05/26 08/05/26 3374724887 Canadian Mainline NCOS Capacity Changes
    Open Season 08/05/26 08/05/26 3374724886 Canadian Mainline NCOS Capacity Changes
    Maintenance 07/31/26 07/31/26 3374724890 TC Energy Planned Maintenance July 31-August 10, 2026
    Capacity Constraint 07/24/26 07/24/26 3374724881 Emerson Extension Line 1 Pipeline System Maintenance
    Other 07/24/26 07/24/26 3374724880 Canadian Mainline Capacity Management Open Season
    Open Season 07/24/26 07/24/26 3374724879 Canadian Mainline Capacity Management Open Season
    Maintenance 07/23/26 07/24/26 3374724872 TC Energy Planned Maintenance July 24-Aug 3, 2026
    Other 07/21/26 07/21/26 3374724852 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 07/21/26 07/21/26 3374724851 Canadian Mainline Summer 2026 STFT Open Season
    Other 07/20/26 06/20/26 3374724846 August 2026 Mainline Fuel Ratios Available
    Maintenance 07/16/26 07/17/26 3374724835 TC Energy Planned Maintenance July 17-27, 2026
    Other 07/15/26 07/15/26 3374724829 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 07/15/26 07/15/26 3374724828 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Other 07/10/26 07/10/26 3374724823 Mainline Posted Heat Value for June 2026
    Other 07/10/26 07/10/26 3374724819 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 07/10/26 07/10/26 3374724818 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Maintenance 07/09/26 07/10/26 3374724815 TC Energy Planned Maintenance July 10-20, 2026
    Capacity Constraint 07/07/26 07/07/26 3374724813 Update - Station 2 Maintenance Work: Complete
    IT Bid Rate 07/06/26 07/06/26 3374724812 Mainline Minimum IT Bid Floors
    Maintenance 07/03/26 07/03/26 3374724810 TC Energy Planned Maintenance July 3-13, 2026
    Other 07/02/26 07/02/26 3374724809 Station 41 Maintenance Work
    Other 07/02/26 07/02/26 3374724808 Canadian Mainline NCOS and ECOS Offerings
    Open Season 07/02/26 07/02/26 3374724807 Canadian Mainline NCOS and ECOS Offerings
    Other 07/02/26 07/02/26 3374724806 PALS Transactions - June 2026
    Capacity Constraint 06/27/26 06/27/26 3374724801 Prairies Pipeline System - Unplanned Maintenance Update
    Maintenance 06/27/26 06/27/26 3374724800 UPDATED: TC Energy Planned Maintenance June 27-July 6, 2026
    Maintenance 06/25/26 06/26/26 3374724798 TC Energy Planned Maintenance June 26-July 6, 2026
    Other 06/23/26 06/23/26 3374724791 Update - Station 2 Maintenance Work
    Other 06/20/26 06/20/26 3374724788 July 2026 Mainline Fuel Ratios Available
    Capacity Constraint 06/19/26 06/20/26 3374724787 Prairies Pipeline System - Unplanned Maintenance
    Maintenance 06/19/26 06/20/26 3374724786 UPDATED: TC Energy Planned Maintenance June 20-June 29, 2026
    Maintenance 06/18/26 06/19/26 3374724783 TC Energy Planned Maintenance June 19-June 29, 2026
    Other 06/15/26 06/15/26 3374724775 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 06/15/26 06/15/26 3374724774 Canadian Mainline Summer 2026 STFT Open Season
    Maintenance 06/11/26 06/12/26 3374724770 TC Energy Planned Maintenance June 12-June 22, 2026
    IT Bid Rate 06/10/26 06/10/26 3374724768 Mainline Minimum IT Bid Floors
    Other 06/09/26 06/09/26 3374724767 Mainline Posted Heat Value for May 2026
    Other 06/08/26 06/08/26 3374724766 Reminder - Station 2 Maintenance Work - May to June
    Maintenance 06/04/26 06/05/26 3374724764 TC Energy Planned Maintenance June 5-June 15, 2026
    IT Bid Rate 06/01/26 06/02/26 3374724762 Mainline Minimum IT Bid Floors
    Other 06/01/26 06/01/26 3374724761 PALS Transactions - May 2026
    Other 05/29/26 05/29/26 3374724759 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 05/29/26 05/29/26 3374724758 Canadian Mainline Summer 2026 STFT Open Season
    Maintenance 05/28/26 05/29/26 3374724757 TC Energy Planned Maintenance May 29-June 8, 2026
    Other 05/27/26 05/27/26 3374724750 Computer System Issues - Resolved
    Other 05/27/26 05/27/26 3374724745 Computer System Issues - Measurement
    Other 05/26/26 05/26/26 3374724743 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 05/26/26 05/26/26 3374724742 Canadian Mainline Summer 2026 STFT Open Season

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