What FERC Approved September 10
At its September 10 meeting, FERC issued certificates and approved abandonments for Gulf South Pipeline Company and Texas Gas Transmission in Dockets CP25-547-000 and CP25-549-000. The Commission summary says the project facilities are designed to create approximately 1.175 million Dth per day of incremental firm transportation capacity.
The authorized scope includes new pipeline facilities, two lease agreements, acquisition of transportation capacity, and acquisition and abandonment of existing facilities. The earlier project record describes about 98 miles of the Greenville Lateral changing ownership and 110.9 miles of new facilities, including a 36-inch line, a short 20-inch lateral, compressor work, and meter stations.
Capacity Scale, With A Strict Boundary
KilowattLogic calculates that 1.175 million Dth per day would equal about 428.9 million Dth over 365 days if the project ran at the full certificated rate every day. That arithmetic shows scale only. It is not a forecast of throughput, subscribed capacity, nominations, utilization, basis relief, commodity prices, tariff charges, or customer savings.
How The Page State Changed
FERC identifies proposed facilities in Washington, Sunflower, Humphreys, Holmes, Attala, Leake, Newton, Jasper, and Clarke counties. Staff found that most adverse environmental effects would be temporary or short term, while some forest and wetland effects would be long term. With recommended mitigation, staff said effects would be less than significant except that climate-change impacts could not be characterized as significant or insignificant.
The July 24 final EIS was an environmental-review milestone, not approval. The September 10 Commission action resolves that earlier approval watchpoint by issuing certificates. Construction progress, compliance with order conditions, the applicant's requested April 28, 2028 service date, and eventual operating availability remain separate states that require later evidence.
Commercial Buyer Read
| Signal | Market Read | Buyer Move |
|---|---|---|
| Commission certificates issued | FERC issued certificates in CP25-547-000 and CP25-549-000 on September 10, advancing the project beyond staff environmental review. | Track certificate conditions, compliance filings, and construction notices before treating capacity as available. |
| 1.175 million Dth/day | FERC says the authorized project is designed to create 1.175 million Dth/day of incremental firm transportation capacity. | Map the capacity, interconnections, tariff service, nomination rights, and delivery point before assigning basis value. |
| 428.9 million Dth/year ceiling | KilowattLogic calculates that 1.175 million Dth/day annualizes to 428.9 million Dth if used at the full certificated rate every day. | Treat that as an arithmetic ceiling, not expected throughput, contracted volume, utilization, or customer savings. |
| Applicant timing | The applicant schedule identified December 2026 construction and an April 28, 2028 requested service date. | Use those dates as a watchlist; certificate issuance does not make either milestone complete or guaranteed. |
What To Watch Next
- Certificate compliance: watch for conditions, implementation filings, and notices to proceed in both dockets.
- Applicant schedule: proposed December 2026 construction and April 28, 2028 service dates remain targets, not completed milestones.
- Tariff and capacity evidence: connect any future service to pipeline rates, nominations, interconnections, and the account delivery point.
- Construction and in-service filings: keep certificate authority, construction, commissioning, and operation as separate page states.
Sources: Federal Energy Regulatory Commission, September 10, 2026 Commission meeting summary and C-1 order page; July 24, 2026 final-EIS notice and Kosciusko Junction Pipeline Project page, Docket Nos. CP25-547-000 and CP25-549-000. Reviewed September 11, 2026.