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Rio Grande LNG, LLC, Rio Grande LNG Train 4, LLC, Rio Grande LNG Train 5, LLC; Notice of Schedule for the Preparation of an Environmental Assessment for the Rio Grande LNG Capacity Amendment
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Rio Grande LNG, LLC, Rio Grande LNG Train 4, LLC, Rio Grande LNG Train 5, LLC; Notice of Schedule for the Preparation of an Environmental Assessment for the Rio Grande LNG Capacity Amendment
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Published Document: 2026-16922 (91 FR 53617)
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On November 21, 2025, Rio Grande LNG, LLC, Rio Grande LNG Train 4, LLC, and Rio Grande LNG Train 5, LLC (RGLNG) filed an application in Docket No. CP26-31-000 requesting an Authorization pursuant to Section 3 of the Natural Gas Act to amend authorizations for certain natural gas liquefaction facilities. The proposed project is known as the Rio Grande LNG Capacity Amendment (Amendment). RGLNG's stated purpose for the Amendment is to align the approved liquefied natural gas (LNG) production capacity of the Rio Grande LNG Terminal with the actual capability of the terminal's liquefaction trains.
On December 2, 2025, the Federal Energy Regulatory Commission (Commission or FERC) issued its Notice of Application for the Project. Among other things, that notice alerted agencies issuing federal authorizations of the requirement to complete all necessary reviews and to reach a final decision on a request for a federal authorization within 90 days of the date of issuance of the Commission staff's environmental document for the project.
This notice identifies Commission staff's intention to prepare an environmental assessment (EA) for the Amendment and the planned schedule for the completion of the environmental review.[1]
Schedule for Environmental Review
Issuance of EA—August 25, 2026
( printed page 53618)
90-day Federal Authorization Decision Deadline [2]
—November 23, 2026
If a schedule change becomes necessary, additional notice will be provided so that the relevant agencies are kept informed of the project's progress.
Project Description
At the Rio Grande LNG Terminal in Cameron County, Texas, the Amendment would align the approved LNG production capacity of the terminal with the actual capability of the terminal's previously authorized liquefaction trains from 5.4 million tonnes per annum (MTPA) to approximately 6.03 MTPA per train; and from a nominal capacity of 27.0 MTPA to approximately 30.15 MTPA. According to RGLNG, the Amendment would be accomplished consistent with the currently approved design of the Rio Grande LNG Terminal and would require no new construction or operational modifications.
Background
The Notice of Application informed stakeholders of three ways to become involved in the Commission's review of the Amendment, by either: (1) filing comments; (2) protesting RGLNG's proposal; or (3) filing a motion to intervene. In response to the Notice, the Commission received comments from the South Texas Environmental Justice Network, The Carrizo/Comecrudo Tribe of Texas, Sierra Club, City of Port Isabel, Border Workers United, and from approximately 114 individuals.
Additional Information
In order to receive notification of the issuance of the EA and to keep track of formal issuances and submittals in specific dockets, the Commission offers a free service called eSubscription. This service provides automatic notification of filings made to subscribed dockets, document summaries, and direct links to the documents. Go to
https://www.ferc.gov/ferc-online/overview
to register for eSubscription.
For public inquiries and assistance with making filings such as interventions, comments, or requests for rehearing, contact the Office of Public Participation at (202) 502-6595 or
OPP@ferc.gov.
Additional information about the Project is available from the FERC website (
www.ferc.gov). Using the “eLibrary” link, select “General Search” from the eLibrary menu, enter the selected date range and “Docket Number” excluding the last three digits (
i.e.,
CP26-31), and follow the instructions. For assistance with access to eLibrary, the helpline can be reached at (866) 208-3676, TTY (202) 502-8659, or at
FERCOnlineSupport@ferc.gov.
The eLibrary link on the FERC website also provides access to the texts of formal documents issued by the Commission, such as orders, notices, and rule makings.
1.
For tracking purposes under the National Environmental Policy Act, the unique identification number for documents relating to this environmental review is EAXX-019-20-000-1784897311.
2.
The Commission's deadline applies to the decisions of other federal agencies, and state agencies acting under federally delegated authority, that are responsible for federal authorizations, permits, and other approvals necessary for proposed projects under the Natural Gas Act. Per 18 CFR 157.22(a), the Commission's deadline for other agency's decisions applies unless a schedule is otherwise established by federal law.