Summary
Trunkline Gas Company posted a Critical maintenance notice on 2026-08-11 for a high-pressure outage at its Henry Hub interconnect. The notice carries no end date (placeholder end date of 2200-01-01), making duration indeterminate -- effectively 'until further notice.' No specific capacity volume is stated in the notice text.
Trading note
TGC Henry Hub high-pressure outage with no restoration timeline removes an indeterminate volume of throughput at one of the most liquid Gulf Coast pricing hubs; Trunkline ELA basis was already trading at -0.460 vs Henry Hub as of 2026-08-10 (5-day average -0.371), and a sustained outage at this location risks further basis widening and upward pressure on Henry Hub spot as TGC flow through the hub is impaired.
Reroute potential
Moderate: Texas Eastern (TETCO), Southern Natural (EGT), and ANR serve overlapping Gulf Coast northbound corridors and provide partial reroute alternatives for volumes not able to move through the TGC Henry Hub interconnect, though TGC is a major artery and full offset is unlikely during a sustained high-pressure outage.
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View original notice text (as posted by Trunkline Gas Company)
Pipeline: Trunkline Gas Company
Notice ID: 67362
Notice Type: Maintenance
Subject: TGC Henry Hub High Pressure Outage
Posted: 2026-08-11 12:38:00.0
Effective: 2026-08-11 12:38:00.0
End Date:
Notice ID: 67362
Notice Type: MAI
Critical: Y
Reqrd Rsp Desc: No Response Required
Posting Date/Time: 2026-08-11 12:38:00.0
Subject: TGC Henry Hub High Pressure Outage
Notice Effective Date/Time: 2026-08-11 12:38:00.0
Notice End Date/Time: 2200-01-01 00:00:00.0
