Mitsubishi Corp. announced plans to acquire U.S. shale gas assets from Aethon Energy Management in a deal valued at about $7.5 billion, marking the Japanese conglomerate’s largest natural gas acquisition in the United States and a significant expansion of its presence in the Gulf Coast energy corridor.
The deal includes Aethon’s natural gas production and midstream infrastructure in the Haynesville shale, a major gas-producing region spanning East Texas and northern Louisiana. Mitsubishi said the transaction includes roughly $5.2 billion in equity and $2.3 billion in assumed debt.
The Haynesville formation is one of the most productive natural gas basins in the country and sits near pipelines supplying liquefied natural gas export terminals along the Texas and Louisiana coasts. Mitsubishi said the assets currently produce about 2.1 billion cubic feet of natural gas per day, with capacity for future growth.
Company officials said the acquisition strengthens Mitsubishi’s ability to supply natural gas to both domestic markets and global customers through LNG exports. The company already has stakes in LNG infrastructure, power generation and energy marketing operations in North America, including Houston-based CIMA Energy.
“This investment enhances our integrated value chain from upstream production to downstream sales,” Mitsubishi said in a statement, citing rising global demand for natural gas driven by power generation, industrial growth and expanding data center usage.
The transaction represents a strategic shift for Mitsubishi, which has traditionally focused on energy trading and LNG marketing rather than direct ownership of U.S. upstream shale assets. Analysts say the move reflects growing interest among international energy companies in securing long-term access to U.S. natural gas supplies.
The acquisition is expected to close in the second quarter of 2026, pending regulatory approvals and customary closing conditions.
For Houston and the broader Gulf Coast region, the deal reinforces the area’s role as a global energy hub, particularly as LNG exports continue to expand and international companies deepen their investment in U.S. energy infrastructure.