A significant portion of Nigerias Natural Gas is processed into liquefied natural gas (LNG). Nigerias most ambitious natural gas project, the $3.8 billion liquefaction facility on Bonny Island, was completed in September 1999. In January 2006, NLNG sent its first shipment of LNG exports to the United States from its newly-commissioned fourth train. The companys fifth train began operating in January 2006 as Well. The additional two trains have increased annual production capacity to 17 million tons per year of LNG. Plans have been approved for a sixth train (to come online in 2007), which is expected to bring total capacity to 22 million tons per year. The facility is currently supplied from dedicated (non-associated) natural gas fields, but it is anticipated that within a few years half of the input natural gas will consist of associated (currently flared) natural gas from existing Oil fields. In January 2005, ExxonMobil signed an MOU with NNPC to study the possibility of constructing a second LNG plant on Bonny Island to come online in 2010. The plant would produce around 4.8 million tons per year of LNG.