Venture Global will supply 2 million metric tons a year of liquefied natural gas to Italian state-controlled energy group Eni , the two companies said on Wednesday.

Venture Global (NYSE:VG) said Wednesday it reached an agreement with Eni (E) for the purchase of 2M metric tons/year of liquefied natural gas for 2 years from the CP2 LNG project, in a deal that marks Eni’s first ever long-term agreement with an American LNG producer.

Italy’s Eni has signed a major long-term LNG deal that will secure work for vessels over 20 years. New York-listed gas producer Venture Global said it had signed up to sell 2 mpta from its third project in the US, CP2 LNG. The 40m tonnes works out at more than 550 cargoes on a standard LNG carrier.