Sempra Energy's Port Arthur LNG unit has begun the federal permitting process for a significant expansion of its liquefied natural gas (LNG) export operations, according to a regulatory filing made on Wednesday.

The proposed expansion is situated in Southeast Texas. This development marks a step in the potential growth of LNG export capabilities in the region.

The regulatory filing indicates that the company is seeking the necessary approvals to proceed with the project. This initiative could contribute to the overall capacity of LNG exports from the United States.