~146 Bcf of storage capacity
6 strategically located storage facilities
15 interstate pipeline interconnections
12 intrastate pipeline interconnections
14 end users
171 miles of pipeline infrastructure
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Gas Storage
Our natural gas storage portfolio consists of six strategically located facilities spanning from the Permian Basin to Alabama, offering approximately 146 Bcf of certificated capacity. This diverse footprint allows us to reliably connect supply basins with key demand markets, providing customers with essential flexibility, optionality, and operational certainty. Backed by a modern, high-performing asset base, our facilities are designed to deliver safe, dependable service and are well positioned to support the evolving needs of the U.S. natural gas market.
Bay Gas is a high-turn salt cavern storage and transportation hub located approximately 40 miles north of Mobile, Alabama. With its location as the closest such hub to the Florida and Georgia markets, Bay Gas is crucial to gas and power generation utility customers in the Southeastern U.S.
Additional cavern and associated pipeline expansion opportunities will be evaluated and constructed based on market demand for transportation and storage services at the facility.
- Type: Salt Cavern
- Working Capacity: 20.4 Bcf
- Injection: 750,000 Mcf/day
- Withdrawal: 2,400,000 Mcf/day
- Interconnects: Florida Gas Transmission (FGT), Gulf South Pipeline (Gulf South), Transcontinental Gas Pipeline (Transco)
- Pipeline Emergency Number:
(888) 307-7595
Tariffs & Statement of Operating Conditions
www.gasnom.com/ip/baygas/
Informational Postings
https://www.gasstorage.net/baygas
Freebird is a depleted natural gas reservoir strategically located in Northwest Alabama in the heart of the Black Warrior Basin with direct connects to Tennessee Gas Pipeline’s (TGP) 500 Leg and Northwest Alabama Gas District’s (NWAGD) local distribution system. Freebird is positioned to provide reliable natural gas service to local markets as well as markets ranging from the Mid-Atlantic to New England.
- Type: Depleted Reservoir
- Working Capacity: 11.2 Bcf
- Injection: 350,000 Mcf/day
- Withdrawal: 305,000 Mcf/day
- Interconnects: Tennessee Gas Pipeline 500L (TGP), Northwest Alabama Gas District (NWAGD)
- Pipeline Emergency Number:
(877) 395-7712
Tariffs
www.gasnom.com/ip/freebird/
Informational Postings
(login credentials required):
www.gasstorage.net/freebird/
Caledonia is a depleted natural gas reservoir strategically located in Northeast Mississippi and provides reliable natural gas service in a key transportation corridor to markets ranging from the Mid-Atlantic to New England.
- Type: Depleted Reservoir
- Working Capacity: 18.5 Bcf
- Injection: 550,000 Mcf/day
- Withdrawal: 550,000 Mcf/day
- Interconnect: Tennessee Gas Pipeline 500L (TGP)
- Pipeline Emergency Number:
(877) 395-7712
Tariffs
www.gasnom.com/ip/caledonia/
Informational Postings
(login credentials required)
www.gasstorage.net/caledonia/
Mississippi Hub is a high-turn salt cavern storage and transportation hub located south of Jackson, Mississippi and directly connected to Southern Natural Gas (Sonat), Transcontinental Gas Pipeline (Transco) and Southeast Supply Header (SESH). Mississippi Hub links East Texas and Northern Louisiana supply basins to markets across the Gulf Coast, Mid-Atlantic and Northeast
- Type: Salt Cavern
- Working Capacity: 56.3 Bcf
- Injection: 1,900,000 Mcf/day
- Withdrawal: 2,400,000 Mcf/day
- Interconnects: Southern Natural Gas (Sonat), Southeast Supply Header (SESH), Transcontinental Gas Pipeline (Transco)
- Pipeline Emergency Number:
(888) 307-7595
Tariffs
www.gasnom.com/ip/mississippihub/
Informational Postings
(login credentials required):
www.gasstorage.net/mississippihub
Mississippi Hub, LLC - Mississippi Hub Expansion Project
PROJECT UPDATE: March 5, 2024, Mississippi Hub submitted an Abbreviated Application for a Certificate of Public Convenience and Necessity to Federal Energy Regulatory Commission (FERC) to construct, modify, and operate the Mississippi Hub Capacity Expansion Project under Docket No. CP24-80-000. On March 20, 2025, FERC granted Mississippi Hub, LLC the certificate of authorization to construct modify, and operate its natural gas storage and pipeline facilities.
Enstor has drilled, completed, and started solution mining Cavern Well #4, drilled and completed Saltwater Disposal Well #10 and Raw Water Well #10, refurbished and upgraded the Leaching facility, worked over existing Saltwater Disposal and Raw Water wells, worked over Cavern Well #1 and #2, and have begun increasing the size of these cavern wells.
The Mississippi Hub facility site is located approximately 7.6 miles southwest of the town of Magee, Mississippi. Mississippi Hub expects to begin construction activities for the expansion project in 2025, after receipt of the required approval from FERC and other Federal, State and Local agencies.
To access information regarding Mississippi Hub’s filings and any FERC documents regarding the proposed Mississippi Hub Expansion Project, visit https://elibrary.ferc.gov/eLibrary/.
- Under search options, choose “General Search” and enter the range of dates you wish to search, or
- Select “Docket Search” and enter the Mississippi Hub Docket Number, CP24-80-000, in the “Enter Docket Number” box.
The Project consists of the following proposed activities:
- Expansion of the Mississippi Hub Storage Facility in Simpson County, Mississippi.
- Increasing the size of the existing gas storage Caverns #1 and #2.
- Construction of three new gas storage caverns (Caverns #4, #5 and #6).
- Expansion of the existing Gas Handling Facility.
- Expansion of the existing Leaching Facility.
- Addition of one meter skid and one filter separator on the existing Southern Natural Gas (“Sonat”) Meter Site in Simpson County, Mississippi.
- Addition of one meter skid and one filter separator on the existing Southeast Supply Header (“SESH”) Meter Site in Covington County, Mississippi.
- Addition of two meter skids, two flow control skids, and one filter separator on the existing Transcontinental Gas Pipeline (“Transco”) Meter Site in Covington County, Mississippi.
- Construction of four new raw water (“RW”) wells (RW Wells #7, #8, #9 and #10) in Simpson County, Mississippi.
- Construction of five new saltwater disposal (“SWD”) wells.
- Two SWD wells (#5 and #7) collocated at the existing RW well #3 SWD well #3 wellpad in Simpson County, Mississippi.
- One new SWD well (#10) in Simpson County, Mississippi.
- Two SWD wells (#6 and #8) at the existing RW well #4 and SWD well #4 wellpad in Jefferson Davis County, Mississippi.
- Construction of a new booster compressor station (“Mississippi Hub Booster Station”) including installation of three new gas turbine driven centrifugal compressors and associated equipment in Covington County, Mississippi.
Project Contact Information: [email protected], 833-454-6742
Katy is a high-deliverability, multicycle natural gas storage facility located in Fort Bend and Waller counties in Texas. The facility consists of a depleted gas production reservoir, redeveloped as a natural gas storage reservoir, and a dual pipeline header system interconnecting with 16 major natural gas pipelines. The facility’s strategic location and connectivity place it at the intersection of production from the Northeast, South Texas and the Permian Basin. The Katy facility is well-positioned to serve growing market demand for LNG liquefaction and natural gas exports into Mexico.
- Type: Depleted Reservoir
- Working Capacity: 23.5 Bcf
- Injection: 750,000 Mcf/day
- Withdrawal: 700,000 Mcf/day
- Interconnects: 16 major pipelines
- Pipeline Emergency Number:
(877) 395-7712
Tariffs & Statement of Operating Conditions
PDF
Informational Postings
(login credentials required)
www.gasstorage.net/katy/
Katy Storage and Transportation TIP Project
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In 2021, the Texas Commission on Environmental Quality (TCEQ) and Texas Emissions Reduction Plan (TERP) announced the award recipients for their 2021 New Technology Implementation Grant (NTIG) Program. The grant supports the implementation of new technologies that will reduce the emissions from facilities and other stationary sources in Texas. Enstor Gas was successfully awarded $2.6 million in grant money to help fund the replacement of eight (8) lean burn natural gas engine drivers (Waukesha 7042GL) used in natural gas storage compression service with eight (8) more efficient and lower emissions, rich burn natural gas engines (Waukesha 7044GSI S5).
The project will be constructed on Enstor owned land in Katy, Texas, and, along with replacing existing lean burn engines with rich burn engines, includes reconfiguring the control panel to accommodate the new engine control module and installing a three-way catalyst to reduce NOx emissions from 2.0 g/bhp-hr to 0.15 g/bhp-hr and VOC emissions from 0.767 g/bhp-hr to 0.003 g/bhp-hr. PM emissions will also be reduced from 0.033 g/bhp-hr to 0.01 g/bhp-hr. This project is funded in part by the State of Texas through a New Technology Implementation Grant Program from the Texas Commission on Environmental Quality. Under the terms of the grant the project is slated to be completed by April 2023.
Quarterly progress reports will be submitted in a timely manner summarizing all aspects of the project tasks. The reports can be viewed at: https://www.tceq.texas.gov/airquality/terp/ntig-projects.
For questions regarding this project, contact Enstor at [email protected].
Grama Ridge is located in Lea County, New Mexico, close to production, gathering, processing and generation assets and it is one of the few natural storage fields in the Permian Basin. Grama Ridge is connected to El Paso Natural Gas (EPNG), Natural Gas Pipeline Company of America (NGPL) and DCP Midstream. The location on the North American grid allows Grama Ridge to link Permian supply and the associated production induced volatility with the demand-linked volatility inherent in Western markets.
- Type: Depleted Reservoir
- Working Capacity: 15.7 Bcf
- Injection: 200,000 Mcf/day
- Withdrawal: 200,000 Mcf/day
- Interconnects: El Paso Natural Gas (EPNG), Natural Gas Pipeline Company of America (NGPL), and DCP Midstream
- Pipeline Emergency Number:
(877) 395-7712
Tariffs & Statement of Operating Conditions
PDF
Informational Postings
(login credentials required)
www.gasstorage.net/gramaridge/
