Southwestern Energy Company is a key player in the energy sector, focusing on the extraction and production of natural gas, oil, and natural gas liquids primarily in the United States. With a strong presence in Pennsylvania, West Virginia, Ohio, and Louisiana, the company specializes in tapping into unconventional natural gas and oil reservoirs. Beyond extraction, Southwestern Energy is involved in the marketing and transportation of these resources, catering to a diverse clientele including LNG exporters, energy firms, utilities, and industrial gas users. Founded in 1929, its headquarters are in Spring, Texas.