SIAD Macchine Impianti (SIAD MI) has supplied seven methane/ethane boil‑off gas (BOG) compressors for the Rio Grande LNG project, a major export terminal under development by NextDecade in Brownsville, Texas. Construction of the facility began in July 2023, with Phase 1 targeted to enter service around 2027.
Phase 1, representing 18 MTPA of liquefied natural gas (LNG) of capacity, includes three liquefaction trains, two LNG storage tanks, and a single marine berth. When fully developed, the five‑train complex will be capable of producing up to 27 MTPA of LNG.
NextDecade expanded the project in 2025, beginning construction on Train 4 in September and Train 5 in October. Each of these additional trains is expected to contribute approximately 6 MTPA to the terminal’s output.
The company is also advancing early development and permitting for a further expansion — Trains 6 through 8. These units, fully owned by NextDecade, would lift the company’s total potential liquefaction capacity to approximately 48 MTPA. NextDecade entered the pre‑filing process for Train 6 with the US Federal Energy Regulatory Commission (FERC) in November 2025 and anticipates submitting a full application in 2026. Additional permitting timelines for Trains 7 and 8 are expected to be announced later in 2026.
