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Malaysia LNG Sdn. Bhd. (MLNG Satu) was incorporated on 14 June 1978 in order to built first Malaysian LNG Plant of three trains with a capacity of 2.7 million ton per annum (Mtpa) each. Its first liquefied natural gas (LNG) was delivered in January 1983 (the first cargo dispatched on 29 January 1983).
On 1 June 1992, Malaysia LNG Dua Sdn Bhd (MLNG Dua) was incorporated to manage and operate the second LNG plant of three trains with 2.6 Mtpa capacity each. Its first LNG was delivered in May 1995.
On 8 November 1995, Malaysia LNG Tiga Sdn Bhd (MLNG Tiga) was incorporated to manage and operate the third LNG plant of two trains with 3.6 Mtpa capacity each. Its first LNG was delivered in March 2003.
("Satu" meaning one, "dua" meaning two and "tiga" meaning three in Malay).
The LNG plant is located in Bintulu, in the Malaysian state of Sarawak. It consists of 8 LNG trains, of which three belong to MLNG Satu (the first joint venture), three to MLNG Dua and two to MLNG Tiga. All three projects are located on one site, all use liquefaction technology developed by Air Products & Chemicals Inc. (APCI) and share common facilities. In 2005, the total installed capacity was 21.85 Mtpa of LNG and there was an upgrading project to increase the capacity by 1.4 Mtpa.
The plant has 6 LNG storage tanks capable of holding 445,000 cubic metres (15,715,030 cu ft) of LNG. Satu initially had 4 storage tanks at 65,000m³ each, while the addition of Dua added another 65,000m³. Lastly, Tiga added an extra LNG storage tank with a capacity of 120,000m³. 
The new PETRONAS LNG Train 9 Project involves the addition of the 9th LNG Train in the existing PETRONAS LNG Complex (PLC) in Bintulu, Sarawak. The new LNG train will add another 3.6 MTPA to the existing 25.7 MTPA production capacity of the PLC. A new wholly owned PETRONAS subsidiary, PETRONAS LNG 9 Sdn. Bhd. (PL9SB) was incorporated to exclusively manage the project. This new LNG train will help early monetization of gas resources and also encourage new domestic upstream exploration activities. Supply for this new LNG train will require feedgas volume of up to 850 mmscfd.
A dual FEED execution was adopted with two (2) Contractors namely JGC Corporation and Chiyoda-Saipem JV awarded with the FEED works, allowing a competitive bid was competed to get the EPCC work. The FEED started in 16 January 2012 and completed on 31 December 2012 with both Contractors submitted the EPCC proposal. Subsequently, on 7 March 2013, the EPCC Contract was awarded to JGC Corporation. EPCC stage will consume 33 months. The first shipment of LNG is expected to be on the first quarter of 2016. The EPCC is expected to complete in December 2015 and it will be the fastest LNG Train construction in the world.
In 2005, Malaysia LNG exported 21.85 million ton of LNG. LNG is exported through Bintulu port ex-ship (for all term Japanese sales) and FOB (for some Korean volumes) on various sized ships. Malaysia Dua has agreed a sale ex-ship to Sendai City Gas and Saibu Gas using small ships. These vessels of 18,928 cu.m. can cause some operational problems as they are relatively slow in loading and occupy one of the berths at Bintulu that is also used for larger ships.
Japan buys 65 percent of Malaysian LNG, and this represented 22 percent of Japan's LNG requirements in 2005. Other importers are Korea (26 percent) and Taiwan (9 percent). In addition to the export on a long-term basis, MLNG also sells LNG on the spot market to the Asia region and the Atlantic Basin.
Malaysia LNG is a subsidiary of the Malaysian national oil and gas company Petronas which is a majoity shareholder in all three LNG Vetures (MLNG Satu, MLNG Dua and MLNG Tiga). Besides Petronas, Royal Dutch Shell, Mitsubishi, JX Nippon Oil and the Sarawak Government hold a minority stake.
The complete breakdown of the ownership structure for all Malaysia LNG projects are:
MLNG Satu - Petronas 90 percent, Mitsubishi 5 percent and Sarawak State Government 5 percent
MLNG Dua - Petronas 60 percent, Mitsubishi 15 percent, Shell 15 percent and Sarawak State Government 10 percent
MLNG Tiga - Petronas 60 percent, Shell 15 percent, Nippon Oil 10 percent, Sarawak State Government 10 percent and Mitsubishi (Diamond Gas) 5 percent
MLNG Train 9 - Petronas 100 percent (currently in EPCC stage).