FERC Reaffirms Pipeline Construction Rule as Rio Grande LNG Expansion Advances
Federal regulators uphold expedited permitting framework while approving construction of new liquefaction trains at Texas export facility
The Federal Energy Regulatory Commission in March reaffirmed its rule allowing natural gas pipeline and LNG facility construction to proceed during the appeals process, rejecting objections from environmental organizations that had sought reinstatement of prior restrictions. The decision, confirmed at FERC’s February 19 open meeting and published in the Federal Register on February 24, comes alongside the Commission’s approval of construction for Trains 4 and 5 at NextDecade Corporation’s Rio Grande LNG facility in Brownsville, Texas — a project that underscores the practical impact of the agency’s accelerated permitting posture.
The regulatory developments reflect a broader policy trajectory at FERC aimed at streamlining natural gas infrastructure approvals amid rising domestic and global demand for LNG. The rule in question eliminates Section 157.23 of FERC’s regulations, a provision adopted in 2020 that prevented developers from beginning construction on approved natural gas transportation or export facilities while rehearing requests were under review.
FERC originally finalized the rule change in October 2025, arguing that the 2020 restriction was no longer necessary because other safeguards — including judicial review and case-by-case stay requests — remain available to affected landowners and communities. A coalition of environmental organizations, including Texas Environmental Justice Advocacy Services, PennFutures, Columbia Riverkeeper, Delaware Riverkeeper, and the Institute for Policy Integrity at New York University School of Law, filed rehearing requests challenging the change. FERC’s March order denied those requests, affirming that the expedited construction framework will remain in effect.
The Commission’s stance aligns with a period of significant LNG infrastructure expansion along the Gulf Coast. With more than $50 billion in active LNG construction projects in various stages of development in Texas and Louisiana, the regulatory framework governing when construction can begin has material consequences for project timelines and financing.
The immediate beneficiary of FERC’s permitting posture is NextDecade’s Rio Grande LNG project in Cameron County, Texas. On March 12, FERC’s Office of Energy Projects approved the company’s request to commence construction of liquefaction Trains 4 and 5 at the facility, following staff review of compliance materials submitted in February and March.
Trains 4 and 5 will add approximately 12 million tonnes per annum of export capacity, bringing the facility’s total capacity to roughly 30 million tonnes per annum across five trains. Train 4 is commercially supported by 20-year sale and purchase agreements with Abu Dhabi National Oil Company, TotalEnergies, and Saudi Aramco for 4.6 million tonnes per annum. Train 5 is backed by agreements with JERA, EQT Corporation, and ConocoPhillips for 4.5 million tonnes per annum. NextDecade reached final investment decision on the $6.7 billion Train 5 in October 2025 and issued full notice to proceed to Bechtel under a lump-sum, turnkey EPC contract.
The company expects to begin commissioning activities on the broader Rio Grande LNG facility in 2026, with first LNG production from Train 1 anticipated in the first half of 2027. Train 5 substantial completion is targeted for the first half of 2031. The scale of the project — with Bechtel managing construction across multiple concurrent trains — represents one of the largest active construction efforts in the U.S. energy sector.
Infrastructure projects of this magnitude generate sustained demand for specialized legal, regulatory, and technical professionals across multiple disciplines. The intersection of FERC permitting, environmental compliance, and multi-billion-dollar project finance requires attorneys with deep expertise in energy regulatory law, environmental review processes, and federal administrative procedure.
As FERC’s expedited construction framework takes effect, developers and their legal counsel will need to navigate a shifting landscape of regulatory risk. The elimination of automatic construction delays during rehearing means that project sponsors may proceed at financial risk if appellate courts ultimately vacate underlying approvals — creating heightened demand for regulatory strategists, risk analysts, and litigation specialists who can assess and manage that exposure.
On the project execution side, the Rio Grande LNG expansion will likely sustain demand for process engineers, LNG plant operators, construction managers, and environmental compliance specialists in South Texas through the end of the decade. The commercial structure of the project, with long-term offtake agreements involving major international energy companies, also points to continued need for energy finance professionals, commercial negotiators, and contract administrators with experience in global LNG markets.
Regulatory professionals with FERC experience — particularly those versed in natural gas certificate proceedings, environmental impact assessments, and administrative law — may find growing opportunities as the pipeline of Gulf Coast LNG and pipeline projects continues to expand under the current permitting framework.
Industry observers will be watching several developments in the months ahead. The environmental coalition’s legal challenge to FERC’s construction-during-appeals rule may move to the D.C. Circuit Court of Appeals, where judicial review could test the durability of the Commission’s rationale. A court ruling reinstating construction restrictions would have significant implications for projects that have proceeded under the current framework.
At Rio Grande LNG, attention will focus on construction milestones as NextDecade targets first production in 2027 and advances work on the later trains. The company has also filed for FERC approval of a sixth liquefaction train, signaling further expansion ambitions at the Brownsville site. Market participants will monitor whether global LNG demand and pricing support continued investment decisions of this scale, particularly as new supply from the U.S. Gulf Coast, Qatar, and other regions enters the market simultaneously.
FERC’s broader approach to natural gas infrastructure permitting — including its March approval of the Golden Triangle Storage expansion in Jefferson County, Texas, adding 30.75 billion cubic feet of working gas capacity — suggests the Commission will continue to prioritize infrastructure development as a core policy objective in 2026.
