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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 11/12/26 11/13/26 3374725119 TC Energy Planned Maintenance Nov 13 - Nov 23, 2026
    Other 11/12/26 11/12/26 3374725116 Microsoft Outage - Email
    Open Season 11/09/26 11/09/26 3374725114 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 11/09/26 11/09/26 3374725113 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Other 11/09/26 11/09/26 3374725112 Mainline Posted Heat Value for October 2026
    Maintenance 11/05/26 10/30/26 3374725101 TC Energy Planned Maintenance Nov 6 - Nov 16, 2026
    Other 11/03/26 11/03/26 3374725090 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 11/03/26 11/03/26 3374725089 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Other 11/01/26 11/01/26 3374725079 PALS Transactions - October 2026
    Maintenance 10/29/26 10/30/26 3374725072 TC Energy Planned Maintenance Oct 30-Nov 9, 2026
    Other 10/28/26 10/28/26 3374725067 REMINDER: Alberta Time Change Effective November 1, 2026
    Other 10/28/26 10/28/26 3374725063 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 10/28/26 10/28/26 3374725062 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Other 10/27/26 10/27/26 3374725060 Notice of Upstream NGTL EGAT Service Restriction
    Event 10/27/26 10/27/26 3374725058 2027 Mainline Abandonment Surcharges and Rate Riders
    Other 10/27/26 10/27/26 3374725057 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 10/27/26 10/27/26 3374725056 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Other 10/26/26 10/26/26 3374725052 Prairies Pipeline System Maintenance November to December
    Maintenance 10/22/26 10/23/26 3374725049 TC Energy Planned Maintenance Oct 23-Nov 2, 2026
    Other 10/20/26 10/20/26 3374725044 November 2026 Mainline Fuel Ratios Available
    Other 10/16/26 10/16/26 3374725028 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 10/16/26 10/16/26 3374725027 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Maintenance 10/15/26 10/16/26 3374725024 TC Energy Planned Maintenance Oct 16-Oct 26, 2026
    Other 10/14/26 10/14/26 3374725022 Mainline Posted Heat Value for September 2026
    Other 10/14/26 10/14/26 3374725020 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Open Season 10/14/26 10/14/26 3374725019 Canadian Mainline Winter 2026/2027 Open Season for STFT
    Maintenance 10/08/26 10/09/26 3374725011 TC Energy Planned Maintenance Oct 9-Oct 19, 2026
    Other 10/07/26 10/07/26 3374725005 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 10/07/26 10/07/26 3374725004 Canadian Mainline Summer 2026 STFT Open Season
    Other 10/05/26 10/05/26 3374724999 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 10/05/26 10/05/26 3374724998 Canadian Mainline Summer 2026 STFT Open Season
    IT Bid Rate 10/05/26 10/05/26 3374724995 Mainline Minimum IT Bid Floors
    Maintenance 10/04/26 10/04/26 3374724994 UPDATED: TC Energy Planned Maintenance Oct 4-Oct 12, 2026
    Other 10/02/26 10/02/26 3374724991 my.TCCustomerExpress.com issues resolved
    Other 10/02/26 10/02/26 3374724989 PALS Transactions - September 2026
    Other 10/02/26 10/02/26 3374724986 my.TCCustomerExpress.com experiencing issues
    Maintenance 10/01/26 10/02/26 3374724983 TC Energy Planned Maintenance Oct 2-Oct 12, 2026
    IT Bid Rate 09/29/26 09/29/26 3374724976 Mainline Minimum IT Bid Floors
    Other 09/28/26 09/28/26 3374724974 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 09/28/26 09/28/26 3374724973 Canadian Mainline Summer 2026 STFT Open Season
    Maintenance 09/24/26 09/25/26 3374724971 TC Energy Planned Maintenance Sept 25-Oct 5, 2026
    IT Bid Rate 09/23/26 09/23/26 3374724964 Mainline Minimum IT Bid Floors
    Other 09/22/26 09/22/26 3374724960 Alberta Time Change Effective November 1, 2026
    IT Bid Rate 09/21/26 09/21/26 3374724958 Mainline Minimum IT Bid Floors
    Other 09/21/26 09/21/26 3374724957 Canadian Mainline Summer 2026 STFT Open Season
    Open Season 09/21/26 09/21/26 3374724956 Canadian Mainline Summer 2026 STFT Open Season
    Other 09/18/26 08/20/26 3374724954 October 2026 Mainline Fuel Ratios Available
    Maintenance 09/17/26 09/18/26 3374724952 TC Energy Planned Maintenance Sept 18-Sept 28, 2026
    Maintenance 09/10/26 09/11/26 3374724948 TC Energy Planned Maintenance Sept 11-Sept 21, 2026
    Other 09/09/26 09/09/26 3374724947 Mainline Posted Heat Value for August 2026

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