What’s LNG

A clean and affordable method for natural gas transportation

Liquefied natural gas, or LNG, is a natural gas that has been supercooled to minus 260 degrees Fahrenheit (minus 162 degrees Celsius). At that temperature, natural gas condenses into a liquid, which takes up to 600 times less space than in its gaseous state, making it feasible to transport over long distances.

  • In the form of LNG, natural gas can be shipped from the parts of the world where it is abundant to where it is in demand.
  • LNG is an energy source that has much lower air emissions than other fossil fuels, such as oil or coal.
  • LNG is odorless, colorless, non-corrosive and non-toxic. Its weight is less than one-half that of water.
  • The use of LNG is a proven, reliable and safe process, and it has been used in the United States since 1917.
  • Natural gas is the world’s cleanest burning fossil fuel and it has emerged as the environmentally preferred fuel of choice.

LNG Process

The liquefied natural gas (LNG) value chain represents $7 to $14 billion dollars of investment from start to finish.

Exploration and Production

Natural gas is extracted from underground reservoirs and sent through a pipeline to a liquefaction facility.


At the liquefaction facility, after impurities are removed, the gas is sent through three cooling processes until it reaches a temperature of minus 260 degrees Fahrenheit.


The chilled gas, now LNG, is loaded onto specially designed tanker ships where it will be kept chilled for the duration of the voyage, which may last anywhere from four to thirty days, depending on the destination port.


Once the ship arrives at a regasification terminal, the LNG is offloaded into large full-containment storage tanks to keep the LNG cold until it is turned back into a gaseous state.


When the LNG has been warmed back to its natural state, the gas is moved into pipelines which deliver the natural gas to customers (residential, power plants and industrial) across the country.

LNG Terminals and Projects

Cameron LNG

Situated along the Calcasieu Channel in Hackberry, Louisiana, this terminal is located 18 miles from the Gulf of Mexico and within 35 miles of five major interstate pipelines. Cameron LNG’s liquefaction project (Trains 1 – 3) began full operations in August 2020 and has initiated the permitting process for two additional liquefaction trains (Trains 4 and 5) and one additional LNG storage tank.

Port Arthur LNG

Sempra LNG is developing Port Arthur LNG, a proposed natural gas liquefaction facility at a site in Port Arthur, Texas, to meet global demand for U.S. natural gas supplies. The proposed project is designed to include two natural gas liquefaction trains with a proposed nominal capacity of approximately 13.5 million tons per annum.

Energía Costa Azul

The Energía Costa Azul regasification terminal was one of the first LNG facilities on the west coast of North America, located 15 miles north of Ensenada, Baja California, Mexico. The proposed liquefaction project is being developed with IEnova, Sempra’s subsidiary in Mexico, to help meet future demand for LNG and provide the worldwide market access to a reliable source of natural gas from the Pacific coast.