FORCE MAJEURE MLV 313(HC LINE) EFF 9-16

SEV 4/5Force Majeure0.590 Bcf/d4 days

Summary

Tennessee Gas Pipeline has declared a force majeure on the HC Line between valve sections 313A-403 and 313A-404, just south of Avoca, New York, effective September 16, 2026. An anomaly requiring immediate repair was discovered, with TGP personnel on site and repair work estimated to last approximately 4 days. The event threatens up to 0.590 Bcf/d of Primary In the Path capacity at MLV 313 HC Zone 4 End (Segment 399 FH), with impact possible as early as the Timely Cycle for Gas Day September 16.

Trading note

TGP force majeure on the HC Line near Avoca, NY threatens up to 0.590 Bcf/d of Zone 4 primary firm capacity starting September 16 for an estimated 4 days; expect bullish pressure on Tennessee Zone 4-300 leg basis (most recently -1.440 vs HH) and downstream Algonquin Citygate and New England basis as Appalachian/Northeast supply tightens with limited reroute via Transco.

Reroute potential

Limited: Transco is the primary competing pipeline for Northeast deliveries from this corridor, but Transco Zone 5 and Northeast segments frequently run near capacity; TGP and Transco together dominate this market, so a 0.590 Bcf/d Zone 4 firm curtailment has limited practical reroute relief for affected Northeast shippers.

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View original notice text (as posted by Tennessee Gas Pipeline (TGP))

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TSP/TSP Name:  1939164-TENNESSEE GAS PIPELINE	Critical: Y
Notice Type Desc (1):  FORCE MAJEURE	Notice Type Desc (2):  FORCE MAJEURE
Notice Eff Date/Time:  09/14/2026 9:03:33AM	Notice End Date/Time:  09/15/2026 9:00:00am
Post Date/Time:  9/14/2026 9:03:33 AM	Notice ID: 404199
Reqrd Rsp:  1	Rsp Date/Time:  9/14/2026 12:00:00 AM
Notice Stat Desc:  INITIATE	Prior Notice: 
Subject:  FORCE MAJEURE MLV 313(HC LINE) EFF 9-16
Notice Text:

 

FORCE MAJEURE AT MLV 313A-403 TO MLV 313A-404 (HC LINE) EFFECTIVE 9-16-2026

 

Pursuant to Article XII of the General Terms and Conditions of Tennessee's FERC Gas Tariff, Tennessee is posting notice of a Force Majeure event between valve sections 313A-403 to 313A-404 on the HC Line just south of Avoca, New York.  An anomaly has been discovered which requires immediate repairs.  Tennessee personnel are on site and have begun working a repair plan to begin on Wednesday, September 16, 2026.  Tennessee is estimating the impact of this work to be up to 590,000 Dths pathed through MLV 313 HC Zone 4 End (Segment 399 FH).  Based on current nominations and forecasted demand, Tennessee is providing notice to customers that Primary In the Path capacity at MLV 313 HC Zone 4 End (Segment 399 FH) could be impacted as early as Timely Cycle for the Gas Day of Wednesday, September 16, 2026 and throughout the duration of this repair work.  Based on current operating conditions, the repair work is estimated to last 4 days.

 

Tennessee will continue to update customers as more information becomes available.

 

Please contact your Account Representative or Scheduler if you have any questions.

 

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ID: TGP-404199 | Rev. 1 | Posted: 2026-09-14 14:16 | Direction: Bullish All Tennessee Gas Pipeline (TGP) notices · page generated 2026-09-26 06:44 UTC