WASHINGTON, June 11 (Reuters) -

JERA, Japan's largest power utility, has agreed to buy up to

5.5 million metric tons per annum of U.S. liquefied natural gas

under 20 year contracts, with deliveries starting around 2030,

U.S. and JERA officials said on Wednesday.

JERA agreed to buy 1.5 mtpa from Sempra's ( SRE ) Port

Arthur LNG Phase 2 project and up to 1 mtpa from Cheniere

, they said. The remaining volume comes from recently

announced agreements.