Project Snapshot
Southeast Supply Header Expansion Project
Facility Type: Pipeline
Scope: Expansion
Owner: Southeast Supply Header LLC (Spectra Energy Corp.; CenterPoint Energy)
Location: Delhi, La. to Colden, Ala.  United States
Region: North America
Modified:  December 03, 2008

Facility description

The Southeast Supply Header, LLC (SESH) pipeline connects the onshore natural gas supply basins of east Texas and northern Louisiana to markets in the Southeast that are now predominantly served by offshore natural gas supplies from the Gulf of Mexico. It offers customers an alternative to offshore supply, which is susceptible to weather-related disruptions. Gas shipped on SESH is produced from unconventional supplies such as the Barnett Shale, the Bossier Sands, and the Arkoma and Fayetteville Shale.

SESH comprises both 36- and 42-inch-diameter pipeline and extends 274 miles from CenterPoint Energy's Perryville Hub near Delhi, La., to the Gulfstream Natural Gas System interconnection near Colden, Ala. Its capacity is 1 billion cubic feet per day. In addition to Gulfstream, SESH interconnects various interstate natural gas pipelines that enable supply to reach southeast and northeast markets as well as high-deliverability storage facilities.

Subsidiaries of Spectra Energy Corp and CenterPoint Energy, Inc. own equal shares of the SESH joint venture. Spectra Energy Transmission oversees gas control and commercial operations while CenterPoint handles field operations. SESH begin commercial operations on September 6, 2008. Major shippers include Southern Co., Tampa Electric Co., EOG Resources, Inc., Florida Power & Light Co., and Progress Energy Florida.

Expansion project

The SESH joint venture on Dec. 1, 2008, announced a proposed expansion along its existing 274-mile pipeline system. During the non-binding open season, which SESH is holding through Jan. 16, 2009, prospective shippers will have the opportunity to request service from any existing or proposed receipt points to any existing or proposed delivery points. SESH will finalize the scope of the expansion following the open season.

The joint venture anticipates an in-service date of the expansion as early as mid-2011.

  Key Stats
Pipeline type:
natural gas
Pipe diameter:
36- and 42-inch
1 billion cubic feet per day
274 miles
Major shippers:
Southern Co.; Tampa Electric Co.; EOG Resources, Inc.; Florida Power & Light Co.; Progress Energy Florida
  Related Articles
SESH To Hold Expansion Open Season
Dec 01, 2008 - Southeast Supply Header, LLC (SESH)on Monday announced it is conducting a non-binding open season for a proposed expansion along its existing 274-mile pipeline system.
Southeast Supply Header Begins Partial Service
Sep 09, 2008 - Southeast Supply Header, LLC has received FERC approval and on September 6, 2008, began service on a portion of its pipeline system, from the Perryville Hub in Delhi, La., to Florida Gas Transmission's interconnect at Lucedale, Miss.
Southeast Supply Header to Begin Work on Pipeline Later This Year
Sep 21, 2007 - Southeast Supply Header, LLC (SESH) on Thursday received authorization from FERC to construct, operate and maintain 270 miles of interstate pipeline that will bring alternative supplies of natural gas to the Southeast U.S. market.
FERC Approves Pipeline for Unconventional Gas Supplies
Sep 20, 2007 - The Federal Energy Regulatory Commission on Thursday approved a new natural gas pipeline proposed by Southeast Supply Header LLC (SESH) that would provide service to customers in the southern and eastern United States.
Pipeline One Step Closer After Public Meeting
May 22, 2007 - A proposed 270-mile gas pipeline stretching from Louisiana across Mississippi and into Alabama is one step closer after a public hearing Monday in George County, Miss.
Willbros Wins Project from Spectra-CenterPoint JV
Feb 21, 2007 - The North American pipeline construction business unit of Willbros Group, Inc. has garnered a contract with Southeast Supply Header, LLC (SESH) to construct approximately 190 miles of the SESH project.
SESH: Proposed Pipeline Near Total Capacity with New Commitments
Jan 18, 2007 - Southeast Supply Header, LLC (SESH) has signed three additional shippers to long-term contracts, bringing total commitments to nearly 1 billion cubic feet per day (Bcf/d), the initial proposed capacity on the new natural gas pipeline system.

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