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TSP Name: Great Lakes Gas Transmission Limited Partnership
Notice ID: 1222
TSP: 046077343
Notice Type: Plnd Outage
Notice Status: Supersede
Posting Date/Time: 08/19/2026 16:18
Notice Eff Date: 08/19/2026
Notice Eff Time: 16:20
Notice End Date: 11/01/2026
Notice End Time: 08:59
Critical: Yes
Required Response: No response required
Prior Notice ID: 1221
Subject: MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/19/26)
Message Text:
Great Lakes Gas Transmission Maintenance Schedule has been updated. Please refer to the maintenance schedule for the projected capacity impacts. Updated items are as follows: Date Change – Crystal Falls Station 8 New HP Installation Project from previous dates of 9/1 - 9/4 to new dates 9/1 – 9/8 Date Change – Naubinway Station 10 HP Replacement and TSA Upgrade from previous dates of 9/23 – 10/30 to new dates of 9/30 – 10/28 Known Winter season maintenance added Please note that the information posted is proposed and subject to change. Please direct any questions to your Account Coordinator, Customer Service Representative, or the Nominations and Scheduling hotline @ 866-454-7572.
Attachments: Great Lakes Gas Transmission Maintenance Schedule 20260818.pdf
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TSP Name: Great Lakes Gas Transmission Limited Partnership
Notice ID: 1233
TSP: 046077343
Notice Type: Maint
Notice Status: Initiate
Posting Date/Time: 09/23/2026 07:54
Notice Eff Date: 09/23/2026
Notice Eff Time: 08:00
Notice End Date: 12/31/2026
Notice End Time: 08:59
Critical: Yes
Required Response: No response required
Subject: CAPACITY REDUCTION GLGT – Shevlin CS3 (Posted: 9/23/26)
Message Text:
Great Lakes Gas Transmission has unplanned maintenance at Shevlin compressor station 3. As a result, capacity will be reduced as follows: 9/24 - Until further notice - Shevlin Compressor Station 3 (LOC #740003): 445 MMcf/d (leaving 1,285 MMcf/d) Great Lakes Gas Transmission anticipates that this may result in Firm Primary, Firm Secondary and Interruptible curtailments. The estimated impact to Firm Primary is 23%. The Reservation Charge Crediting Mechanism of Section 6.10.3(d) shall apply to this outage. This notice will be updated as more information becomes available. Please direct any questions to your Account Coordinator, Customer Service Representative, or the Nominations and Scheduling hotline @ 800-827-5267
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TSP Name: Great Lakes Gas Transmission Limited Partnership
Notice ID: 1234
TSP: 046077343
Notice Type: Maint
Notice Status: Supersede
Posting Date/Time: 09/23/2026 08:39
Notice Eff Date: 09/23/2026
Notice Eff Time: 08:42
Notice End Date: 12/31/2026
Notice End Time: 08:59
Critical: Yes
Required Response: No response required
Prior Notice ID: 1233
Subject: UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 9/23/26)
Message Text:
Since the last posting, Great Lakes Gas Transmission is correcting the impacted location from the unplanned maintenance at Shevlin compressor station 3. As a result, capacity will be reduced as follows: Emerson Eastbound (LOC #3833975): 9/24 - Until further notice - 411 MMcf/d (leaving 1,285 MMcf/d) Great Lakes Gas Transmission anticipates that this may result in Firm Primary, Firm Secondary and Interruptible curtailments. The estimated impact to Firm Primary is 23%. The Reservation Charge Crediting Mechanism of Section 6.10.3(d) shall apply to this outage. This notice will be updated as more information becomes available. Please direct any questions to your Account Coordinator, Customer Service Representative, or the Nominations and Scheduling hotline @ 800-827-5267
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TSP Name: Great Lakes Gas Transmission Limited Partnership
Notice ID: 1235
TSP: 046077343
Notice Type: Maint
Notice Status: Supersede
Posting Date/Time: 09/23/2026 15:49
Notice Eff Date: 09/23/2026
Notice Eff Time: 15:52
Notice End Date: 10/17/2026
Notice End Time: 08:59
Critical: Yes
Required Response: No response required
Prior Notice ID: 1230
Subject: UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 9/23/26)
Message Text:
Great Lakes Gas Transmission is extending the date for the maintenance at Thief River Falls Unit 201. As a result, capacity will be reduced as follows: Emerson Eastbound (LOC #3833975): 9/18 – 10/16 (Previously 9/30) Available capacity is 1,388 MMcf/d Great Lakes Gas Transmission anticipates that this may result in Firm Primary, Firm Secondary and Interruptible curtailments. The estimated impact to Firm Primary is 18% (9/18-10/16). The Reservation Charge Crediting Mechanism of Section 6.10.3(d) shall apply to this outage. Please refer to the maintenance schedule for any additional capacity impacts. Please direct any questions to your Account Coordinator, Customer Service Representative, or the Nominations and Scheduling hotline @ 866-454-7572.
Great Lakes Gas Transmission
Update GLGT Open Season 5127 West to East and East to East Capacity Nov26-Mar v3
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Notice Category: Non-Critical
Notice Type: TSP Cap Offer
Notice Status: Supersede
Posting Date/Time: 08/06/2026 14:00
Notice Eff Date/Time: 08/06/2026 14:00
Prior Notice ID: 1213
Response Date/Time: 08/12/2026 10:00
Subject: Update GLGT Open Season 5127 West to East and East to East Capacity Nov26-Mar v3
Great Lakes Gas Transmission
MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/4/26)
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TSP Name: Great Lakes Gas Transmission Limited Partnership
Notice ID: 1237
TSP: 046077343
Notice Type: Plnd Outage
Notice Status: Supersede
Posting Date/Time: 09/24/2026 14:47
Notice Eff Date: 09/24/2026
Notice Eff Time: 14:52
Notice End Date: 11/01/2026
Notice End Time: 08:59
Critical: Yes
Required Response: No response required
Prior Notice ID: 1231
Subject: MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 9/24/26)
Message Text:
Great Lakes Gas Transmission Maintenance Schedule has been updated. Please refer to the maintenance schedule for the projected capacity impacts. Updated items are as follows: Date Change – Naubinway Station 10 HP Replacement and TSA Automation Upgrade from previous dates of 9/30-10/28 & 11/17-11/19 to new dates of 10/2 – 12/4 Please refer to the EBB for additional capacity impacts. Please note that the information posted is proposed and subject to change. Please direct any questions to your Account Coordinator, Customer Service Representative, or the Nominations and Scheduling hotline @ 866-454-7572.
Attachments: Great Lakes Gas Transmission Maintenance Schedule 20260924.pdf
