Liquefied Natural Gas, or LNG, is natural gas (CH4) in its liquid state.


Natural gas is liquefied so that it can be more efficiently transported over long distances in specially designed LNG ships. Once super-cooled to -260ºF, natural gas condenses by a factor of ~600x.

LNG is an odorless, non-flammable, non-toxic liquid that has been safely and securely shipped around the world for over 60 years.



  • What is LNG?

    LNG is liquefied natural gas (methane) that has been cooled to an extremely cold temperature (-260° F/ -162.2° C). At standard atmospheric conditions, methane is a vapor, not to be confused with gasoline, which is a liquid.

  • How is LNG shipped?

    Specially designed ships are used to transport LNG to U.S. terminals. They have double hulls and are constructed of specialized materials that are capable of safely storing LNG at temperatures of -260° F/ -162.2° C.

  • How are U.S. LNG facilities permitted?

    U.S. LNG export projects undergo a rigorous, multiyear review and permitting process overseen by the U.S. Federal Energy Regulatory Commission (FERC) and more than a dozen federal, state and local agencies, ensuring safe, responsible and environmentally sound economic development.



LNG and natural gas have significant environmental benefits over other forms of energy, particularly in comparison to coal or oil.

  • When LNG is vaporized and used as fuel, it reduces particulate emissions to near zero and carbon dioxide (CO2) emissions by 70 percent in comparison with other, heavier hydrocarbon fuels
  • When burned for power generation, the results are even more pronounced: sulfur dioxide (SO2) emissions are virtually eliminated and CO2 emissions are reduced significantly

Rio Grande LNG is being designed to meet or exceed all environmental requirements, which include strict regulations governing impacts to air, land, and water, as well as required mitigation activities to offset any unavoidable impacts. The regulatory process and ongoing oversight ensure these standards are met and maintained in accordance with the law.



Safety is the single most important consideration at every stage of development; from engineering and design through construction and operations, safety is a top priority.

Currently in the rigorous U.S. Federal Energy Regulatory Commission (FERC) review process, Rio Grande LNG is utilizing proven technology and is being designed to meet or exceed all safety requirements and regulations.

LNG has a strong track record of safety, particularly in comparison to other common fuel types, and has been safely shipped around the world for more than 60 years. 



Construction and operation of Rio Grande LNG would provide major economic boosts to the Rio Grande Valley communities and throughout the State of Texas. 

Rio Grande LNG is projected to create employment opportunities of over 400,000+ person-years (5,000 workers on site). Once in operation, the project is expected to create over 4,900 permanent U.S. jobs

Rio Grande LNG is committed to being a good neighbor. Since day one, Rio Grande LNG has prioritized local labor and local businesses in order to maximize its positive impact. Rio Grande LNG also hopes to create significant environmental benefits through mitigation and other activities. For these reasons, we are working with local educational, training, business and environmental organizations to fulfill these commitments.


U.S. Federal Energy Regulatory Commission Permitting Process

The Federal Energy Regulatory Commission, also known as the FERC, is the main regulatory body in charge of the review and permitting process for U.S. LNG export facilities.

This rigorous process includes an in-depth review of the environmental, social and economic impacts of proposed projects. The FERC, in cooperation with more than a dozen federal, state and local agencies, conducts a comprehensive review of proposed LNG projects before making a decision on whether to issue permits. This process is one of the most extensive in the world, ensuring safe, responsible economic development.

On October 12, 2018, FERC issued a draft Environmental Impact Statement (EIS) for Rio Grande LNG and Rio Bravo Pipeline. Separately, the Texas Commission on Environmental Quality (TCEQ) voted to issue a series of state-level air permits to RGLNG on December 12, 2018. FERC is expected to issue a final EIS in April 2019, and the federal authorization decision deadline is set for July 25, 2019.


The Rio Grande LNG Project

Sample LNG Value Chain


Rio Grande LNG is a proposed liquefied natural gas (LNG) project at the Port of Brownsville, which has the potential to create a significant economic impact on the Rio Grande Valley through the creation of thousands of local jobs, and a more diversified local economy. If the project moves forward, Rio Grande LNG would provide a stable, long-term economic engine that would support the Rio Grande Valley community for decades, while also providing our allies and partners around the world access to cleaner-burning, reliable sources of energy.

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