The Port Arthur liquefied natural gas export project in Texas proposed by Sempra Energy has formally filed with regulators for authorization for an expansion at the plant which will have the largest liquefaction Trains of any so far constructed in the US.
Sempra’s expansion will include two liquefaction trains (Train 3 and Train 4), which are identical to the trains (Train 1 and Train 2) previously approved by the Federal Energy Regulatory Commission.
“Each of the two incremental liquefaction trains will be capable of producing under optimal conditions 6.73 million tonnes per annum or approximately 13.5 MTPA in the aggregate,” San Diego, California-based Sempra to the FERC.
The addition of Train 3 and Train 4 would double the facility’s output from the current 13.46 MTPA to a total of almost 27 MTPA.
The company plans to build the plant on a site along the west side of the Sabine-Neches Ship Channel, about five miles south of the city of Port Arthur.
The expansion will utilize the same liquefaction Train design as that put forward for the initial plant so that much of the initial engineering design has already been completed. Experienced US liquefaction plant builders, Bechtel, designed the original two-Train plant and has been retained as the engineering, procurement and construction (EPC) contractor.
In the FERC application, Sempra request that the Commission issues authorization for the siting, construction, and operation of the expansion project by no later than January 2021.
Sempra anticipates requesting authorization to begin construction by March 2022.
Sempra first received its environmental impact statement from regulators in October 2018 for the Port Arthur project.
The previous FERC review addressed the potential environmental effects of the construction and operation of the various proposed facilities. as well as the Texas Connector and Louisiana Connector pipelines.
The original filing covered two liquefaction Trains, three LNG storage tanks, each with a capacity of 160,000 cubic metres, a new marine terminal with two LNG vessel berths, an area for support vessels, an LNG transfer system and a truck-loading area.