FERC issues draft enviro review on Lake Charles LNG project in Louisiana

The Federal Energy Regulatory Commission on April 10 released a draft environmental impact statement (EIS) for the Lake Charles Liquefaction Project, which was proposed by Trunkline Gas Co. LLC, Lake Charles LNG Co. LLC, and Lake Charles LNG Export Co. LLC.

Trunkline requests authorization to construct, install, and operate new natural gas pipeline and compression facilities and meter stations; modify certain existing pipeline facilities; modify certain compressor and meter stations; and abandon one compressor unit in the states of Arkansas, Mississippi, and Louisiana (collectively referred to as the Non-Liquefaction Facilities). Lake Charles LNG Co. and Lake Charles LNG Export (collectively referred to as Lake Charles LNG) jointly request authorization to site, construct, and operate new liquefaction facilities adjacent to an existing liquefied natural gas (LNG) terminal located in Calcasieu Parish, Louisiana, and to construct and operate certain facility modifications at the existing LNG terminal. The new liquefaction facilities would have a design production capacity of 16.45 million metric tons of LNG per annum.

The proposed Non-Liquefaction Facilities would provide for 3,100,000 dekatherms per day of firm transportation service. Subject to the receipt of a FERC approval and all other applicable permits, authorizations, and approvals, Trunkline anticipates it would begin construction of the proposed Non-Liquefaction Facilities in 2017 and initiate service in late 2018. 

The draft EIS, which has a public comment deadline of June 1, addresses the potential environmental effects of the construction, modification, and operation of the following project facilities:

  • three liquefaction trains, each with a production capacity sufficient to produce 5.48 million metric tons per annum of LNG for export (each train would contain metering and gas treatment facilities, liquefaction and refrigerant units, safety and control systems, and associated infrastructure);
  • modifications and upgrades at the existing LNG terminal;
  • about 0.5 mile of 48-inch-diameter feed gas line to supply natural gas to the liquefaction facility from existing gas transmission pipelines;
  • approximately 17.9 miles of 24- and 42-inch-diameter natural gas pipeline;
  • a new 98,685 horsepower (hp) compressor station;
  • abandonment of a 3,000-hp compressor unit, installation of a 15,002-hp unit, and piping modifications at one existing compressor station;
  • modification of station piping at three other existing compressor stations:
  • five new meter stations and modifications and upgrades of five existing meter stations;
  • modification of certain existing pipeline facilities; and
  • construction of miscellaneous auxiliary and appurtenant facilities.

The existing regasification facilities at the LNG terminal would remain in place. Lake Charles LNG would isolate the existing revaporization equipment while constructing the liquefaction facilities and exporting LNG. Lake Charles LNG does not anticipate resuming operation of the revaporization equipment until BG LNG Services LLC (BG LNG), their sole regasification service customer, requests resumption of regasification services. With some adjustments, the LNG facilities would be able to import or export gas in accordance with customer contracts and economic demand.

To provide electricity to the liquefaction facility, Entergy would build an approximately 19-mile-long, 230-kV transmission line in Calcasieu Parish. The line would originate at Entergy’s existing Nelson Substation and would connect to a new Entergy substation to be constructed adjacent to and north of the existing Graywood Substation at the LNG terminal. Four 4,000-kW stand-by diesel generators would provide emergency backup power to all systems.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.