One consortium comprises Rekayasa Industri, JGC Corporation, KBR Indonesia and JGC Indonesia.
The other consortium includes Tripatra Engineers and Constructors, Tripatra Engineering, Chiyoda International Indonesia, Saipem Indonesia, Suluh Ardhi Engineering and Chiyoda.
Train 3 will build on the operations of the two existing liquefaction trains at the Tangguh site located in Teluk Bintuni Regency in Papua Barat province.
The project will add 3.8 million tons per annum (mtpa) of liquefaction capacity to Tangguh, bringing the total capacity to 11.4mtpa.
The one-year onshore FEED contracts include the new LNG Train, LNG jetty and related infrastructure.
BP Group chief executive Bob Dudley said: "The awarding of the onshore FEED contracts and signing of the sales and purchase agreement with PLN are major accomplishments, which demonstrate progress for the Tangguh Expansion Project.
"The Train 3 Project will deliver significant value, including much needed energy to Indonesia."
Indonesia’s state owned electricity firm PLN (Persero) has agreed to purchase approximately 1.5 million tons of liquefied natural gas (LNG) per year from 2015 to 2033.
The companies will initially supply the LNG from Tangguh’s existing two LNG trains, as part of the sales and purchase agreement.
The deal includes 40% of annual production from Train 3 to the domestic market.
BP Berau and its affiliates in Indonesia own a 37.16% stake in the project.
