Summary
Trunkline Gas Company has posted a Critical maintenance notice effective 2026-08-24 for a high-pressure outage at the Henry Hub (loc 80721). The notice carries no end date (end date is effectively open-ended at 2200-01-01), meaning the constraint is 'until further notice.' Live capacity data for the prior gas day shows HENRY HUB HIGH PRESSURE - TGC - SA running at only 7% utilization on the delivery side (0.035 Bcf/d scheduled against 0.500 Bcf/d operating capacity), consistent with a facility that is largely offline or severely restricted. Because this is the physical Henry Hub high-pressure header, even a partial outage carries outsized price signal importance beyond the raw volume removed.
Trading note
TGC high-pressure outage at the physical Henry Hub with no restoration timeline is bullish for Henry Hub and Trunkline ELA spot prices; the prior gas day's delivery scheduling at this location collapsed to 0.035 Bcf/d against 0.500 Bcf/d operating capacity (93% headroom, consistent with near-full curtailment), and with no end date this constraint must be traded as open-ended until a restoration notice is posted.
Reroute potential
Moderate: TETCO (monitored), CGT (monitored), and Gulf South (monitored) all have interconnects in the Henry Hub area and can absorb some diverted volumes, but the Henry Hub itself is a pooling and pricing node -- physical access constraints at the hub itself affect settlement and basis pricing beyond simple volume rerouting.
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View original notice text (as posted by Trunkline Gas Company)
Pipeline: Trunkline Gas Company
Notice ID: 67946
Notice Type: Maintenance
Subject: TGC Henry Hub High Pressure Outage
Posted: 2026-08-24 14:09:00.0
Effective: 2026-08-24 14:09:00.0
End Date:
Notice ID: 67946
Notice Type: MAI
Critical: Y
Reqrd Rsp Desc: No Response Required
Posting Date/Time: 2026-08-24 14:09:00.0
Subject: TGC Henry Hub High Pressure Outage
Notice Effective Date/Time: 2026-08-24 14:09:00.0
Notice End Date/Time: 2200-01-01 00:00:00.0
