NextDecade Corporation (NextDecade or the Company) (NASDAQ:NEXT) announced today that it has initiated the pre-filing process with the Federal Energy Regulatory Commission (FERC) for expansion at Rio Grande LNG that includes a sixth liquefaction train (Train 6) and an additional marine berth. The Company expects to file a full application for this expansion with FERC in 2026.

"With five trains now under construction at Rio Grande LNG and space at the site to potentially double capacity, we are intently focused on the next phase of growth for NextDecade, and today we have advanced the permitting process for our expansion capacity by initiating a pre-filing with FERC for Train 6," said Matt Schatzman, NextDecade's Chairman and Chief Executive Officer. "We look forward to working with FERC and other agencies throughout the Train 6 permitting process, as we expand our liquefaction capacity to deliver reliable, cost-effective and lower-carbon energy to the world."

About NextDecade Corporation

NextDecade is committed to providing the world access to reliable, cleaner energy. We are focused on delivering secure and affordable energy through the safe and efficient development and operation of natural gas liquefaction capacity at Rio Grande LNG. Through our subsidiaries, we are constructing and developing the Rio Grande LNG natural gas liquefaction and export facility near Brownsville, Texas, with approximately 48 MTPA of potential liquefaction capacity currently under construction and in development, sufficient space at the site for up to 10 liquefaction trains, and a potential carbon capture and storage project. NextDecade's common stock is listed on the Nasdaq Stock Market under the symbol "NEXT." NextDecade is headquartered in Houston, Texas. For more information, please visit www.next-decade.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of U.S. federal securities laws. The words "anticipate," "contemplate," "estimate," "expect," "project," "plan," "intend," "believe," "may," "might," "will," "would," "could," "should," "can have," "likely," "continue," "design," "assume," "budget," "guidance," "forecast," and "target," and other words and terms of similar expressions are intended to identify forward-looking statements, and these statements may relate to the business of NextDecade and its subsidiaries. These statements have been based on assumptions and analysis made by NextDecade in light of current expectations, perceptions of historical trends, current conditions and projections about future events and trends and involve a number of known and unknown risks, which may cause actual results to differ materially from expectations expressed or implied in the forward-looking statements. Although NextDecade believes that the expectations reflected in these forward-looking statements are reasonable, it can give no assurance that the expectations will prove to be correct. NextDecade's actual results could differ materially from those anticipated in these forward-looking statements as a result of a variety of factors, including those discussed in NextDecade's periodic reports that are filed with and available from the Securities and Exchange Commission. Additionally, any development of additional expansion trains at the Rio Grande LNG Facility or CCS projects remains contingent upon receipt of requisite governmental approvals, execution of definitive commercial and financing agreements, securing all financing commitments and potential tax incentives, achieving other customary conditions and making a final investment decision to proceed. The forward-looking statements in this press release speak as of the date of this release. NextDecade may from time to time voluntarily update its prior forward-looking statements, however, it disclaims any commitment to do so except as required by securities laws.

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NextDecade Contacts

Investors

Megan Light

mlight@next-decade.com

832-981-6583

Media

Susan Richardson

srichardson@next-decade.com

832-413-6400

NextDecade Initiates Pre-Filing Process with FERC for Train 6 at Rio Grande LNG