The staff of the Federal Energy Regulatory Commission will prepare an environmental impact statement (EIS) on the Plaquemines LNG Project, which involves construction and operation of facilities by Venture Global Plaquemines LNG LLC in Plaquemines Parish and Jefferson Parish, Louisiana.
The commission will use this EIS in its decision-making process to determine whether the project is in the public interest, FERC said in an Oct. 5 public notice. The commission will take scoping comments on what should be covered in the EIS until Nov. 4.
Plaquemines LNG plans to construct and operate natural gas liquefaction and export facilities at a planned liquefied natural gas (LNG) terminal on the west bank of the Mississippi River in Plaquemines Parish, Louisiana, and construct and operated associated lateral pipelines in Plaquemines and Jefferson parishes that would connect the terminal to the existing interstate U.S. natural gas grid. The Plaquemines LNG Project would provide total liquefaction nameplate capacity of about 978 billion cubic feet per year (Bcf/yr) of natural gas.
According to the company, the project would provide a cost-effective outlet for new domestic natural gas available for the market.
The Plaquemines LNG Project would be constructed in two phases and would consist of:
- A liquefaction plant consisting of ten liquefaction blocks in Phase 1 and ten liquefaction blocks in Phase 2, with each block having a nameplate capacity of 1.0 million tonnes per annum (with higher capacity during peak conditions);
- Four 200,000-cubic-meter (m3) LNG above-ground storage tanks;
- Three marine loading berths capable of receiving ocean-going LNG carriers of between 120,000 m3 and 210,000 m3 capacity;
- One temporary floating LNG storage vessel;
- One utility dock on the Mississippi River;
- A combined cycle gas turbine power plant with a generating capacity for Phase 1 of approximately 720 MW, which would be expanded in Phase 2 to include an additional 720 MW of capacity;
- The Southeast Lateral Pipeline, consisting of about 12.1 miles of 42-inch-diameter pipeline in Plaquemines Parish, with a gas supply capability of 0.85 billion cubic feet per day (Bcf/d) for Phase 1;
- The Southwest Lateral Pipeline, consisting of about 11.1 miles of 42-inch-diameter pipeline in Plaquemines Parish, with a gas supply capability of 0.85 Bcf/d for Phase 1;
- The Northwest Lateral Pipeline, consisting of about 21.2 miles of 42-inch-diameter pipeline in Jefferson Parish, with a gas supply capability of 1.7 Bcf/d for Phase 2;
- Four meter stations, each with a pig launcher and pressure regulating valve;
- A gas gate station located at the Terminal, with pig receivers, filter/separators, custody transfer meters, pressure regulators, emergency shutdown valves, and gas analyzers; and
- Mainline valves (MLV).
In July 2014, FERC initiated its National Environmental Policy Act (NEPA) pre-filing review process for this project. Plaquemines LNG told FERC it is preparing to apply for approval from the U.S. Department of Energy’s Office of Fossil Energy to export approximately 24 million tons per year of LNG to Free Trade Agreement (FTA) and non-FTA nations over 25 years. At its peak, potential liquefaction output for the Plaquemines LNG Project will be as much as 24.0 mtpa or 1,240 Bcf/yr.
The 1,440 MW of natural gas-fired combined cycle gas turbine (CCGT) capacity would feature air-cooled steam condensers and electric substation. Diesel emergency generators each powered with diesel fuel would provide adequate power during the period when the power is shut down and during emergencies. Black start diesel-fired electric generators would provide power for starting the power plant, gas turbines and auxiliaries. Diesel fuel storage tanks with a capacity adequate for emergency power and onsite black start capability would be installed.