Golden Meadow & Centerville Compressor Station Maintenance (EL300SEG), September 15-18, 2026

SEV 4/5Maintenance0.075 Bcf/d4 days

Summary

CGT has notified customers of planned maintenance at both Golden Meadow and Centerville Compressor Stations from September 15-18, 2026, reducing backhaul capacity on EL300SEG to 350,000-500,000 Dth/day against a design capacity of 575,000 Dth/day -- a restriction of up to 225,000 Dth/day (0.225 Bcf/d). CGT explicitly warns that curtailments to Interruptible, Secondary Firm, and Primary Firm services are anticipated, a significant escalation beyond typical interruptible-only curtailment language. Live capacity data confirms EL300SEG is already at 100% utilization (0.575 Bcf/d scheduled against 0.575 Bcf/d operating capacity) as of the September 8 timely cycle, corroborating the tightness described in the notice.

Trading note

CGT maintenance on EL300SEG cuts backhaul capacity by up to 0.225 Bcf/d (midpoint ~0.113 Bcf/d restriction at the 500k Dth floor) for four days starting September 15, with primary firm curtailments explicitly at risk; Columbia Gulf mainline basis, which has traded at an average of -0.247 vs Henry Hub over the five trading days ended September 4 (most recently -0.215 on September 4), is likely to widen further as southbound backhaul tightens and Transco Zone 4 Southeast basis firms in sympathy.

Reroute potential

Moderate: Texas Eastern (TETCO) and Trunkline (TGC) serve overlapping Gulf Coast northbound corridors and could absorb some displaced volumes, but the explicit primary firm curtailment risk on a Critical notice suggests CGT does not anticipate sufficient system-level flexibility to avoid firm impacts.

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View original notice text (as posted by Columbia Gulf Transmission (CGT))

TSP Name Columbia Gulf Transmission, LLC
TSP 007854581
Notice Type Description: Maintenance

Notice Stat Desc: Initiate

Prior Notice: 

Critical: Y

Reqrd Rsp Desc: No Response Required
Post

Notice Effective

Notice End



Response
Post Date: 09/08/26

09/08/26

10/08/26
Subject: Subject: Golden Meadow & Centerville Compressor Station Maintenance (EL300SEG), September 15-18, 2026
Author: Author: Dillon Schoolcraft
Notice Text
Columbia Gulf Transmission LLC (CGT) reminds customers of upcoming maintenance at both Golden Meadow and Centerville Compressor Stations, beginning on Tuesday, September 15, 2026, through Friday, September 18, 2026. As a result, the Backhaul capacity through EL300SEG will be reduced to a level between 350,000 and 500,000 Dth effective Timely Cycle for Gas Day Tuesday, September 15, 2026. 

CGT anticipates this restriction may result in curtailments to Interruptible, Secondary Firm, and Primary Firm services. Please see the details provided below for more information.

EL300SEG

·       Estimated Capacity Setting: 350,000 - 500,000 Dth 

·       Design Capacity: 575,000 Dth

·       Posted Percentage: 61-87%

Due to the potential impact to firm service, CGT encourages customers to monitor the scheduled volumes on the Operationally Available Capacity screen on Informational Postings, as nominations can fluctuate based on market conditions. 

Reservation Charge Credits (RCCs) will be determined per the process set forth in the General Terms and Conditions, Section 40 of CGT’s FERC Gas Tariff (Tariff). By means of this notice, CGT is establishing the 7-day Average Usage Quantity to be the period of September 1-7, 2026, pursuant to the provisions in the Tariff. 

Please contact your Customer Services Representative with any questions.

ID: CGT-26239028 | Rev. 1 | Posted: 2026-09-08 20:31 | Direction: Bullish All Columbia Gulf Transmission (CGT) notices · page generated 2026-09-26 06:44 UTC