France, April 15 -- TotalEnergies has signed a Sales and Purchase Agreement (SPA) with NextDecade to buy 1.5 million tons per annum (Mtpa) of liquefied natural gas (LNG) from the future Train 4 liquefaction unit at the Rio Grande LNG facility. The SPA, of a duration of twenty years, is subject to NextDecade taking a positive Final Investment Decision (FID) on Train 4. TotalEnergies holds a 16.7% stake in the first phase of the Rio Grande LNG facility, which consists in 3 LNG trains currently under construction in southern Texas. TotalEnergies previously agreed to purchase 5.4 Mtpa of the approximately 17.5 Mtpa produced by the first phase, which is expected to start up in 2027. TotalEnergies also holds a 17.5% stake in NextDecade, Rio Grand...