NextDecade, the company building the Rio Grande LNG plant, has secured funding of a total $3 billion for the expansion of its project, with over half of the money coming from TotalEnergies and Global Infrastructure Partners, NextDecade reported in a Securities and Exchange Commission filing. The French supermajor will contribute $300 million of the total in exchange for a 10% stake in the fourth liquefaction train of the Rio Grande facility, while the private equity major will pay $1.5 billion for a 50% stake in the same train. NextDecade will…