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Great Lakes Gas Transmission

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Great Lakes Gas Transmission

UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Updated: 8/12/26)

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Informational Until Further Notice

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Notice Category: Critical
Notice Type: Maint
Notice Status: Initiate
Posting Date/Time: 08/12/2026 10:40
Notice Eff Date/Time: 08/12/2026 10:40

Subject: UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Updated: 8/12/26)
Posted: 2026-08-15 15:47 UTC  |  Rev. 2  |  ID: 1216 Direction: Neutral
Great Lakes Gas Transmission

UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 8/12/26)

SEV 3/5
Informational Until Further Notice

Pre-screen severity 3 -- below full-score threshold.

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Notice Category: Critical
Notice Type: Maint
Notice Status: Supersede
Posting Date/Time: 08/12/2026 10:45
Notice Eff Date/Time: 08/12/2026 10:45
Prior Notice ID: 1206

Subject: UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 8/12/26)
Posted: 2026-08-15 18:47 UTC  |  Rev. 2  |  ID: 1217 Direction: Neutral
Great Lakes Gas Transmission

MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/19/26)

SEV 3/5
Informational

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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
Posted: 2026-08-20 02:31 UTC  |  Rev. 1  |  ID: 1222 Direction: Neutral
Great Lakes Gas Transmission

CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 8/20/26)

SEV 3/5
Informational Until Further Notice

Pre-screen severity 3 -- below full-score threshold.

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Notice Category: Critical
Notice Type: Maint
Notice Status: Initiate
Posting Date/Time: 08/20/2026 11:05
Notice Eff Date/Time: 08/21/2026 09:00

Subject: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 8/20/26)
Posted: 2026-08-23 18:47 UTC  |  Rev. 2  |  ID: 1223 Direction: Neutral
Great Lakes Gas Transmission

Update GLGT Open Season 5127 West to East and East to East Capacity Nov26-Mar v3

SEV 2/5
Informational

Pre-screen severity 2 -- below full-score threshold.

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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
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1214 Direction: Neutral
Great Lakes Gas Transmission

MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/4/26)

SEV 2/5
Informational

Pre-screen severity 2 -- below full-score threshold.

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Notice Category: Planned Service Outage
Notice Type: Plnd Outage
Notice Status: Supersede
Posting Date/Time: 08/04/2026 11:48
Notice Eff Date/Time: 08/04/2026 11:53
Prior Notice ID: 1208

Subject: MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/4/26)
Posted: 2026-08-19 18:56 UTC  |  Rev. 315  |  ID: 1210 Direction: Neutral
Great Lakes Gas Transmission

MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/20/26)

SEV 2/5
Informational

Pre-screen severity 2 -- below full-score threshold.

Below alert threshold -- no detailed analysis performed.
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Notice Category: Planned Service Outage
Notice Type: Plnd Outage
Notice Status: Supersede
Posting Date/Time: 08/20/2026 13:36
Notice Eff Date/Time: 08/20/2026 13:36
Prior Notice ID: 1222

Subject: MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/20/26)
Posted: 2026-08-26 15:05 UTC  |  Rev. 89  |  ID: 1224 Direction: Neutral
Great Lakes Gas Transmission

UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 9/2/26)

SEV 2/5
Informational

Pre-screen severity 2 -- below full-score threshold.

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Notice Category: Critical
Notice Type: Maint
Notice Status: Supersede
Posting Date/Time: 09/02/2026 14:25
Notice Eff Date/Time: 09/02/2026 14:25
Prior Notice ID: 1217

Subject: UPDATED: CAPACITY REDUCTION GLGT – Emerson Eastbound (Posted: 9/2/26)
Posted: 2026-09-05 21:48 UTC  |  Rev. 2  |  ID: 1226 Direction: Neutral
Great Lakes Gas Transmission

September 2026 Transporter's Use Schedule Notice

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 08/10/2026 15:00
Notice Eff Date/Time: 08/10/2026 15:00

Subject: September 2026 Transporter's Use Schedule Notice
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1215 Direction: Neutral
Great Lakes Gas Transmission

August 2026 Transporter's Use Schedule

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

Below alert threshold -- no detailed analysis performed.
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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 07/18/2026 08:00
Notice Eff Date/Time: 07/18/2026 08:00

Subject: August 2026 Transporter's Use Schedule
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1204 Direction: Neutral
Great Lakes Gas Transmission

August 2026 Transporter's Use Schedule Notice

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

Below alert threshold -- no detailed analysis performed.
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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 07/10/2026 11:00
Notice Eff Date/Time: 07/10/2026 11:00

Subject: August 2026 Transporter's Use Schedule Notice
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1202 Direction: Neutral
Great Lakes Gas Transmission

Great Lakes Stipulation and Agreement of Settlement Filed

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 06/24/2026 11:18
Notice Eff Date/Time: 06/24/2026 11:30

Subject: Great Lakes Stipulation and Agreement of Settlement Filed
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1196 Direction: Neutral
Great Lakes Gas Transmission

Seasonal Rates April 2026 – March 2027

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 05/29/2026 08:34
Notice Eff Date/Time: 05/29/2026 08:35

Subject: Seasonal Rates April 2026 – March 2027
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 1184 Direction: Neutral
Great Lakes Gas Transmission

Supported Price Index Reference

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

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Notice Category: Non-Critical
Notice Type: Cap Rel
Notice Status: Initiate
Posting Date/Time: 05/24/2019 15:02
Notice Eff Date/Time: 05/24/2019 15:05

Subject: Supported Price Index Reference
Posted: 2026-08-14 16:06 UTC  |  Rev. 2  |  ID: 180 Direction: Neutral
Great Lakes Gas Transmission

GLGT Open Season 5127 result

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
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Notice Category: Non-Critical
Notice Type: Other
Notice Status: Initiate
Posting Date/Time: 08/13/2026 11:03
Notice Eff Date/Time: 08/13/2026 13:00

Subject: GLGT Open Season 5127 result
Posted: 2026-08-16 18:47 UTC  |  Rev. 2  |  ID: 1219 Direction: Neutral
Great Lakes Gas Transmission

September 2026 Transporter's Use Schedule

SEV 1/5
Informational

Pre-screen severity 1 -- below full-score threshold.

Below alert threshold -- no detailed analysis performed.
Reroute: Not assessed.
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Notice Category: Non-Critical
Notice Type: Rates-Chrgs
Notice Status: Initiate
Posting Date/Time: 08/18/2026 16:00
Notice Eff Date/Time: 08/18/2026 16:00

Subject: September 2026 Transporter's Use Schedule
Posted: 2026-08-22 11:31 UTC  |  Rev. 2  |  ID: 1220 Direction: Neutral
Great Lakes Gas Transmission

MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/26/26)

UNSCORED
Informational
View original notice text
Notice Category: Planned Service Outage
Notice Type: Plnd Outage
Notice Status: Supersede
Posting Date/Time: 08/26/2026 10:15
Notice Eff Date/Time: 08/26/2026 10:15
Prior Notice ID: 1224

Subject: MAINTENANCE SCHEDULE for Great Lakes Gas Transmission (Posted: 8/26/26)
Posted: 2026-09-10 11:46 UTC  |  Rev. 445  |  ID: 1225 Direction: Neutral