Osaka Gas Browse Pty Ltd, established through Osaka Gas Australia, a wholly owned subsidiary of Japan’s Osaka Gas, has signed a sale and purchase agreement with BP Developments Australia to acquire a 5% stake in the Browse sedimentary basin gas field off Western Australia. The agreement was signed on September 18.
The Browse project comprises three gas fields off Western Australia’s coast — Brecknock, Calliance, and Torosa — with plans under consideration to process the produced gas using the existing North West Shelf LNG liquefaction facilities. Osaka Gas plans to pursue this stake acquisition through a joint investment with Japan Organization for Metals and Energy Security (JOGMEC), and the project also includes plans to apply Carbon Capture and Storage (CCS) facilities. The project is currently at the Pre-FEED (concept design) stage and has not yet reached a Final Investment Decision (FID).
The stake being acquired by Osaka Gas is 5%, and the project’s total LNG production is reported at approximately 11 million tonnes per year. Osaka Gas’s share of this corresponds to approximately 550,000 tonnes per year. The Western Australian government has granted the project “Significant Project” status.
Japan has continuously expanded overseas gas field equity investments to diversify its LNG procurement sources and secure long-term supply stability, and this Browse stake acquisition is an extension of that strategy. The planned application of CCS facilities also aligns with the low-carbon LNG procurement policies emphasized by the Japanese government and companies.
Japanese trading houses and energy companies have long maintained a strategy of securing equity stakes in gas fields in major LNG-producing countries such as Qatar, Australia, and the United States to build long-term supply chains, and this Browse stake acquisition by Osaka Gas is an extension of that pattern. However, since this agreement represents a pre-FID equity acquisition, several stages (FEED, FID, and construction) remain before actual production can begin, and a considerable amount of time is expected to pass. Utilizing the existing North West Shelf facilities allows production to begin without constructing new liquefaction facilities, reducing initial investment costs, which suggests that the model of leveraging existing infrastructure may spread to similar mature gas field developments going forward. The increase in CCS-integrated LNG projects also illustrates growing preference for low-carbon LNG among Asian buyers.
A primary point to watch is whether the specific terms of the joint investment with JOGMEC and the equity ratio will be disclosed. When the Browse project will move into the FEED stage and when the actual FID is expected are also of interest. In addition, how the specific scale and technical approach of the CCS facilities, and the terms of connection with the existing North West Shelf facilities, will be finalized going forward needs to be confirmed.