Mississippi Hub, LLC Seeks Amendment to Request for Notice to Proceed with Natural Gas Storage and Pipeline Facilities

The Mississippi Hub, LLC, has submitted an amendment to its Request for Notice to Proceed with construction of natural gas storage and pipeline facilities in Simpson, Covington, and Jefferson Davis Counties, Mississippi. The amendment, submitted on May 13, 2025, seeks to expand the scope of the facilities to include additional construction and modifications to previously authorized facilities.

Key Takeaways:

• The Mississippi Hub, LLC, has requested permission to expand Cavern Nos. 1 and 2 to increase their working and base gas capacities.
• The company seeks to construct Cavern Nos. 4, 5, and 6, and add compressor units, dehydration units, and other facilities as described in the March 20 Order.
• MS Hub has confirmed that it has received all applicable permits and authorizations required under federal law, with the exception of the Section 404 permit and Water Quality Certificate.
• The company has been advised that the U.S. Army Corps of Engineers is preparing a notice stating that the Water Quality Certificate requirement has been waived due to the Mississippi Department of Environmental Quality's failure to act on the certificate application.
• MS Hub will file the notice and Section 404 permit with the Commission upon receipt.
• The company requests that the Federal Energy Regulatory Commission issue a Notice to Proceed with the amended facilities and activities.

Statistics:

• The proposed expansion would increase the working and base gas capacities of Cavern Nos. 1 and 2.
• The company plans to construct Cavern Nos. 4, 5, and 6, which would require additional compressor units and dehydration facilities.
• The total horsepower of the gas-driven compressor units would increase by 16,500 hp, and the total horsepower of the electric-driven compressor units would increase by 14,000 hp.
• The proposed expansion would require approximately 30 miles of pipeline and associated facilities.

Sources:

1. Mississippi Hub, LLC, 190 FERC P 61,175 (2025)

2. March 20 Order, 190 FERC at Ordering Paragraph (B)(3), Environmental Condition No. 9