“Coal indexation in LNG contracts will be particularly relevant for Japanese buyers, not least because coal is an integral part of Japan’s power-generation mix,” said Abhishek Kumar, head of analytics at Interfax Energy in London.

“The move also demonstrates that some Japanese buyers are keen on spreading the price risk associated with LNG by diversifying price linkages to a variety of fuels,” he said.

(Reporting by Yuka Obayashi in TOKYO and Jessica Jaganathan in SINGAPORE; Editing by Richard Pullin and Tom Hogue)