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Notice Type
Maintenance
Effective Start Date Time
12/12/2025 6:00 am
Subject
TC Energy Planned Maintenance Dec 12-22, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning December 12, 2025.
Forecast system capabilities converted to energy at 38.5 MJ/m3.
Note that all system capabilities are based on a forecast delivery distribution and ambient temperature.
Actual capabilities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
The TC Energy system is an integrated system and capacity is affected by shipper nominations (load distribution) on any given day.
1Prairies Line represents the sum of the receipts at Empress and Saskatchewan.
2Emerson Extension represents the delivery to Emerson 1 plus Emerson 2.
3Northern Ontario Line represents the flow east from Station 41.
4Eastern Delivery Area represents the Eastern Ontario Triangle (EOT) flow east of Station 116 into the North Bay Shortcut plus the flow east of Mainline Valve 135 on the Montreal Line.
5Downstream STN 148 represents the flow through Compressor Station 148 (Les Cedres), delivering to the TQM system as well as the Philipsburg and Napierville Extensions. If deliveries upstream of STN 148 (e.g. EDA) are higher than forecast, it may affect ability to deliver up to the posted capacities downstream of STN 148.
Maintenance
Effective Start Date Time
12/12/2025 6:00 am
Subject
TC Energy Planned Maintenance Dec 12-22, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning December 12, 2025.
| Prairies Line1 (TJ) | Emerson Extension2 (TJ) | Northern Ontario Line3 (TJ) | Eastern Delivery Area4 (TJ) | Downstream STN 1485 (TJ) | |
|---|---|---|---|---|---|
| December 12 | 5755 | 3460 | 2505 | 3500 | 1370 |
| December 13 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 14 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 15 | 5775 | 3460 | 2505 | 3500 | 1370 |
| December 16 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 17 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 18 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 19 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 20 | 5825 | 3460 | 2505 | 3500 | 1370 |
| December 21 | 5825 | 3460 | 2505 | 3500 | 1370 |
| December 22 | 5825 | 3460 | 2505 | 3500 | 1370 |
Note that all system capabilities are based on a forecast delivery distribution and ambient temperature.
Actual capabilities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
The TC Energy system is an integrated system and capacity is affected by shipper nominations (load distribution) on any given day.
1Prairies Line represents the sum of the receipts at Empress and Saskatchewan.
2Emerson Extension represents the delivery to Emerson 1 plus Emerson 2.
3Northern Ontario Line represents the flow east from Station 41.
4Eastern Delivery Area represents the Eastern Ontario Triangle (EOT) flow east of Station 116 into the North Bay Shortcut plus the flow east of Mainline Valve 135 on the Montreal Line.
5Downstream STN 148 represents the flow through Compressor Station 148 (Les Cedres), delivering to the TQM system as well as the Philipsburg and Napierville Extensions. If deliveries upstream of STN 148 (e.g. EDA) are higher than forecast, it may affect ability to deliver up to the posted capacities downstream of STN 148.
Notice Type
Maintenance
Effective Start Date Time
12/12/2025 6:00 am
Subject
TC Energy Planned Maintenance Dec 12-22, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning December 12, 2025.
Forecast system capabilities converted to energy at 38.5 MJ/m3.
Note that all system capabilities are based on a forecast delivery distribution and ambient temperature.
Actual capabilities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
The TC Energy system is an integrated system and capacity is affected by shipper nominations (load distribution) on any given day.
1Prairies Line represents the sum of the receipts at Empress and Saskatchewan.
2Emerson Extension represents the delivery to Emerson 1 plus Emerson 2.
3Northern Ontario Line represents the flow east from Station 41.
4Eastern Delivery Area represents the Eastern Ontario Triangle (EOT) flow east of Station 116 into the North Bay Shortcut plus the flow east of Mainline Valve 135 on the Montreal Line.
5Downstream STN 148 represents the flow through Compressor Station 148 (Les Cedres), delivering to the TQM system as well as the Philipsburg and Napierville Extensions. If deliveries upstream of STN 148 (e.g. EDA) are higher than forecast, it may affect ability to deliver up to the posted capacities downstream of STN 148.
Maintenance
Effective Start Date Time
12/12/2025 6:00 am
Subject
TC Energy Planned Maintenance Dec 12-22, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning December 12, 2025.
| Prairies Line1 (TJ) | Emerson Extension2 (TJ) | Northern Ontario Line3 (TJ) | Eastern Delivery Area4 (TJ) | Downstream STN 1485 (TJ) | |
|---|---|---|---|---|---|
| December 12 | 5755 | 3460 | 2505 | 3500 | 1370 |
| December 13 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 14 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 15 | 5775 | 3460 | 2505 | 3500 | 1370 |
| December 16 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 17 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 18 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 19 | 5815 | 3460 | 2505 | 3500 | 1370 |
| December 20 | 5825 | 3460 | 2505 | 3500 | 1370 |
| December 21 | 5825 | 3460 | 2505 | 3500 | 1370 |
| December 22 | 5825 | 3460 | 2505 | 3500 | 1370 |
Note that all system capabilities are based on a forecast delivery distribution and ambient temperature.
Actual capabilities on the day may vary due to changes to the maintenance schedule, unplanned events, and differences between forecast and actual conditions.
The TC Energy system is an integrated system and capacity is affected by shipper nominations (load distribution) on any given day.
1Prairies Line represents the sum of the receipts at Empress and Saskatchewan.
2Emerson Extension represents the delivery to Emerson 1 plus Emerson 2.
3Northern Ontario Line represents the flow east from Station 41.
4Eastern Delivery Area represents the Eastern Ontario Triangle (EOT) flow east of Station 116 into the North Bay Shortcut plus the flow east of Mainline Valve 135 on the Montreal Line.
5Downstream STN 148 represents the flow through Compressor Station 148 (Les Cedres), delivering to the TQM system as well as the Philipsburg and Napierville Extensions. If deliveries upstream of STN 148 (e.g. EDA) are higher than forecast, it may affect ability to deliver up to the posted capacities downstream of STN 148.