Cheniere Energy Partners L.P. has inked a deal for annual sales of 3.5 million metric tons of liquefied natural gas from its proposed Sabine Pass facility to Korea Gas Corp., the world’s largest importer of the fuel.

The KoGas deal means Cheniere has agreements in place to sell 16 million metric tons of LNG from the Sabine Pass facility, which will have a total production capacity of 18 million metric tons a year.

KoGas is Cheniere’s fourth “foundation customer,” said Cheniere chairman and chief executive officer Charif Souki.

KoGas was incorporated by the Korean government in 1983. The company is the dominant gas provider for the Republic of Korea (South Korea).