Columbia Gulf Transmission declared a Force Majeure effective June 19, 2026 at Corinth Compressor Station Unit 505, which remains active as of this June 23 revision. The CorinSEG is restricted to 2,350,000 MMBtu/day (2.350 Bcf/d) on net backhaul, with the adjacent BannSEG revised down to 2,300,000 MMBtu/day (2.300 Bcf/d) -- marked as a change from the prior posting. Multiple point constraints show zero capacity including Transco/Terrebonne, Sea Robin-Erath, and several Gulf Coast interconnects, and Due Shipper service is unavailable.
Active CGT force majeure at Corinth CS restricts backhaul to 2.350 Bcf/d on CorinSEG with BannSEG revised lower to 2.300 Bcf/d; expect continued bullish pressure on Transco Zone 4 and Southeast basis vs Henry Hub with zero-capacity constraints at key Transco and Sea Robin interconnects limiting Gulf Coast northbound flow options.
Reroute: Moderate: Texas Eastern (TETCO) and Trunkline (TGC) serve overlapping Gulf Coast northbound corridors and provide partial reroute alternatives for CGT backhaul volumes. However, the simultaneous zero-capacity constraints at the Transco/Terrebonne and Sea Robin-Erath interconnects limit flexibility, and the multi-day duration of the force majeure suggests alternative paths are already partially subscribed.
Columbia Gulf Transmission (CGT)
UPDATE: Force Majeure – Corinth Compressor Station
SEV 4/5
Force Majeure0.266 Bcf/dUntil Further Notice10 Days
CGT has declared force majeure at Corinth Compressor Station Unit 505 in Mississippi due to an unexpected mechanical failure, reducing backhaul capacity through CorinSEG from 2.541 Bcf/d design capacity to 2.275 Bcf/d -- a loss of approximately 0.266 Bcf/d. The force majeure was originally declared effective June 20, 2026; this update extends the anticipated restoration date to Gas Day June 29, 2026. Curtailments to interruptible, secondary firm, and primary firm services are anticipated.
CGT force majeure removes approximately 0.266 Bcf/d of Louisiana-to-Appalachian backhaul capacity through CorinSEG, with primary firm service at risk of curtailment; expect bullish pressure at Transco Zone 4 and Southeast basis points and modest bearish pressure at Henry Hub as northbound takeaway is constrained.
Reroute: Moderate: Texas Eastern (TETCO) and Trunkline (TGC) serve overlapping Gulf Coast northbound corridors, but CGT primary firm curtailments at this volume level will be difficult to fully absorb given typical spare capacity availability in summer shoulder season.
