South Mansfield Acquired by JERA — Energy M&A

JERA has completed the acquisition of the South Mansfield upstream asset in Louisiana for $1.5bn, taking full ownership of the Haynesville Shale position through its US subsidiary, JERA Americas. The deal was structured as an add-on to JERA’s existing US energy footprint and follows a previously announced agreement involving Williams and GEP Haynesville II. The acquired portfolio produces more than 500 million standard cubic feet per day (mscf/d) and includes 200 undeveloped sites, with JERA targeting growth to 1 billion mscf/d.

The Haynesville basin is one of the US’s most significant natural gas producing regions, and the transaction strengthens JERA’s exposure to upstream gas supply in a market where long-term demand and infrastructure connectivity are central to value creation. As a strategic buyer, JERA is positioning the asset to support its broader energy and power-generation interests, while expanding the development runway through the undeveloped locations included in the purchase.

While specific closing conditions and advisor details were not provided in the available information, the acquisition is now marked as closed, with JERA set to pursue production and development plans aimed at scaling output over time.