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Other
Effective Start Date Time
10/26/2026 3:49 pm
Subject
Prairies Pipeline System Maintenance November to December
Notice Text
EXTENSION OF PRAIRIES PIPELINE MAINTENANCE INTO NOVEMBER AND DECEMBER
Existing pipeline maintenance and facilities work on the Prairies Pipeline System will continue through the end of December in preparation for winter operations. As a result, Prairies capacity is expected to remain at current levels - below typical winter operating levels - to complete the work through December.
Depending on demand levels, discretionary services (i.e. diversions and interruptible) may continue to be limited past the TransGas SSDA to downstream locations during this period. Firm services are not anticipated to be impacted.
LOSS OF CRITICAL UNIT (LCU) PROTECTION AT STATION 5
Additionally, from November 23 to December 11 LCU protection at Station 5 on the Prairies Pipeline System will be limited due to required upgrades and reliability work at the compressor station.
There will be an increased risk to discretionary and firm services should an additional unplanned compressor unit outage occur at Station 5, or at other compressor station facilities in the SSDA during this period. TC Energy will be employing additional measures to minimize both the potential for, and impacts from, unplanned outages during periods when LCU protection is limited.
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Note that system capacities are variable due to many factors including forecast delivery distribution, ambient temperatures, gas stream energy content, facility availability, and interconnect assistance as applicable. Actual capacities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
TC Energy will continue to communicate system capacity and the progress of maintenance work on a regular basis through the weekly Planned Maintenance Capacity Bulletins.
QUESTIONS
If you have any questions or require further information, please contact your Marketing Representative
Other
Effective Start Date Time
10/26/2026 3:49 pm
Subject
Prairies Pipeline System Maintenance November to December
Notice Text
EXTENSION OF PRAIRIES PIPELINE MAINTENANCE INTO NOVEMBER AND DECEMBER
Existing pipeline maintenance and facilities work on the Prairies Pipeline System will continue through the end of December in preparation for winter operations. As a result, Prairies capacity is expected to remain at current levels - below typical winter operating levels - to complete the work through December.
Depending on demand levels, discretionary services (i.e. diversions and interruptible) may continue to be limited past the TransGas SSDA to downstream locations during this period. Firm services are not anticipated to be impacted.
LOSS OF CRITICAL UNIT (LCU) PROTECTION AT STATION 5
Additionally, from November 23 to December 11 LCU protection at Station 5 on the Prairies Pipeline System will be limited due to required upgrades and reliability work at the compressor station.
There will be an increased risk to discretionary and firm services should an additional unplanned compressor unit outage occur at Station 5, or at other compressor station facilities in the SSDA during this period. TC Energy will be employing additional measures to minimize both the potential for, and impacts from, unplanned outages during periods when LCU protection is limited.
--
Note that system capacities are variable due to many factors including forecast delivery distribution, ambient temperatures, gas stream energy content, facility availability, and interconnect assistance as applicable. Actual capacities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
TC Energy will continue to communicate system capacity and the progress of maintenance work on a regular basis through the weekly Planned Maintenance Capacity Bulletins.
QUESTIONS
If you have any questions or require further information, please contact your Marketing Representative