Enercast
Transwestern Pipeline

[Transwestern Pipeline] [Capacity Constraint] EAST MAINLINE

SEV 4/5Force Majeure1 days
Summary
Transwestern Pipeline has declared a force majeure on the East Mainline effective Gas Day Oct 27 2026 at 9:00 AM, expiring Oct 28 2026 at 8:59 AM -- a single-day event. No specific capacity reduction figure is stated in the notice. The East Mainline carries Permian and San Juan Basin gas westbound toward SoCal and Arizona delivery points.
Trading note
TW East Mainline force majeure on Oct 27 produces split-direction signal: bearish Waha/Permian as westbound takeaway is cut, bullish SoCal Border and Arizona delivery points as westbound supply is reduced; no capacity volume stated so exact cut is unquantified but duration is short at one gas day.
Reroute potential
Moderate: EPNG is the primary competing pipeline serving SoCal border and Arizona from the Permian Basin; if EPNG has available capacity, partial reroute is possible, but any simultaneous EPNG constraint would eliminate California reroute entirely.

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View original notice text (as posted by Transwestern Pipeline)
Pipeline: Transwestern Pipeline
Notice ID: 121570
Notice Type: Capacity Constraint
Subject: EAST MAINLINE
Posted: Oct 26 2026 2:15PM
Effective: Oct 27 2026 9:00AM
End Date: Oct 28 2026 8:59AM

Notice Type Description: Capacity Constraint
Notice Identifier: 121570
Critical Notice Description: Critical notice
Posting Date/Time: Oct 26 2026 2:15PM
Notice Status Description: Initiate
Required Response Indicator Description: No response required
TSP: 7933047
TSP Name: TRANSWESTERN PIPELINE COMPANY, LLC
Subject: EAST MAINLINE
Notice Effective Date/Time: Oct 27 2026 9:00AM
Notice End Date/Time: Oct 28 2026 8:59AM
Reason: Force Majeure
Location: EAST MAINLINE
Cite this Enercast Pipe Monitor, “[Transwestern Pipeline] [Capacity Constraint] EAST MAINLINE” (Transwestern Pipeline), posted 2026-10-26. https://enercast.com/notice/transwestern-pipeline-tw-121570-r1.html
ID: TW-121570  |  Rev. 1  |  Posted: 2026-10-26 19:16  |  Direction: Bullish All Transwestern Pipeline notices  ·  page generated 2026-10-26 19:17 UTC