Argentina’s government has launched a natural gas tender to try to shore up domestic supply starting in the Southern Hemisphere winter in 2022.

The majority of the gas would come from the Neuquén Basin, home to the massive Vaca Muerta formation.

Energy Secretary Darío Martínez said the objective of the tender — part of the Plan Gas 4 scheme launched last year — was to ensure as much domestic gas as possible when heating demand peaks. Argentina is coming off a crushing winter of record demand for gas imports, which also coincided with soaring global prices for liquefied natural gas (LNG).

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According to a resolution published in the Official...