TransCanada Canadian Mainline Notice 3374724310
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Notice Type
Maintenance
Effective Start Date Time
10/24/2025 5:00 am
Subject
UPDATED: TC Energy Planned Maintenance Oct 24 - Nov 3, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning October 24, 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
10/24/2025 5:00 am
Subject
UPDATED: TC Energy Planned Maintenance Oct 24 - Nov 3, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning October 24, 2025.
| Prairies Line1 (TJ) | Emerson Extension2 (TJ) | Northern Ontario Line3 (TJ) | Eastern Delivery Area4 (TJ) | Downstream STN 1485 (TJ) | |
|---|---|---|---|---|---|
| October 24 | 5360 | 3455 | 2385 | 2330 | 1060 |
| October 25 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 26 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 27 | 5360 | 3455 | 2385 | 2365 | 995 |
| October 28 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 29 | 5360 | 3455 | 2385 | 2365 | 1005 |
| October 30 | 5340 | 3455 | 2385 | 2365 | 1005 |
| October 31 | 5535 | 3455 | 2385 | 2365 | 1005 |
| November 1 | 5590 | 3445 | 2385 | 2405 | 1090 |
| November 2 | 5590 | 3445 | 2385 | 2405 | 1090 |
| November 3 | 5500 | 3445 | 2350 | 2405 | 1090 |
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
10/24/2025 5:00 am
Subject
UPDATED: TC Energy Planned Maintenance Oct 24 - Nov 3, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning October 24, 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
10/24/2025 5:00 am
Subject
UPDATED: TC Energy Planned Maintenance Oct 24 - Nov 3, 2025
Notice Text
Below is a summary of forecasted system capabilities for the posting period beginning October 24, 2025.
| Prairies Line1 (TJ) | Emerson Extension2 (TJ) | Northern Ontario Line3 (TJ) | Eastern Delivery Area4 (TJ) | Downstream STN 1485 (TJ) | |
|---|---|---|---|---|---|
| October 24 | 5360 | 3455 | 2385 | 2330 | 1060 |
| October 25 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 26 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 27 | 5360 | 3455 | 2385 | 2365 | 995 |
| October 28 | 5360 | 3455 | 2385 | 2365 | 990 |
| October 29 | 5360 | 3455 | 2385 | 2365 | 1005 |
| October 30 | 5340 | 3455 | 2385 | 2365 | 1005 |
| October 31 | 5535 | 3455 | 2385 | 2365 | 1005 |
| November 1 | 5590 | 3445 | 2385 | 2405 | 1090 |
| November 2 | 5590 | 3445 | 2385 | 2405 | 1090 |
| November 3 | 5500 | 3445 | 2350 | 2405 | 1090 |
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.