Mississippi Hub

Sempra’s Mississippi Hub Storage is a high-deliverability underground facility located at the Bond Salt Dome in Simpson County, Mississippi.


Location : Simpson County, Mississippi
Total Working Gas Capacity : 22.3 Bcf
Injection Capacity : 350 MMcfd
Total Withdrawal Capacity : 1,300 MMcfd
Pipeline Connections : Southern Natural Gas (SNG), Southeast Supply Header (SESH), Transcontinental Gas Pipeline (Transco)
Commercial Operation : August 2010

The facility offers close proximity to major interstate pipelines and pipeline expansion projects that access major downstream natural gas markets. It also provides access to emerging shale gas production in east Texas and Louisiana, liquefied natural gas imports, as well as traditional gas supplies in the Gulf of Mexico and along the Gulf Coast.

Mississippi Hub Storage has multiple pipeline interconnections and is ideally located to serve growing demand centers in the Southeast and Northeast regions. Direct pipeline connections include Southern Natural Gas (SoNat), Southeast Supply Header (SESH) and Transcontinental Gas Pipeline.

The facility is permitted for four storage caverns holding up to 30 billion cubic feet (Bcf) of working gas. The 8.3 Bcf third cavern was completed in May 2014, expanding the site’s storage capacity to 22.3 Bcf. Additional cavern and associated pipeline expansion opportunities will be evaluated and constructed based on regional market demand for storage services.


  • Provides a safe and reliable natural gas storage solution
  • Helps meet the country’s demand for cleaner energy
  • Direct connections with major pipelines that access downstream natural gas markets
  • Supports domestic energy security and economic growth
  • Contact

    Natural Gas Storage
    Brad Ledbetter
    Email| 832.460.6587

    Hugh Berglund
    Email: | 281.423.2725

    Pipeline Safety

    At Sempra, safety is our top priority. That extends to the operation of our underground natural gas pipelines. Learn more about pipeline safety and how to recognize if a pipeline is located near you.