Southwestern Energy Company to Present at IPAA Oil & Gas Symposium in London

HOUSTON, July 5 /PRNewswire-FirstCall/ — Southwestern Energy Company will make a presentation to investors on Thursday, July 7, at 10:15 a.m. BST (5:15 a.m. U.S. Eastern time) in London, England, at the 2005 U.S. Oil & Gas Investment Symposium sponsored by the Independent Petroleum Association of America. A copy of the presentation can be found on the Company’s web site at http://www.swn.com/ under Presentations.

Southwestern Energy Company is an integrated energy company whose wholly- owned subsidiaries are engaged in the exploration and production of natural gas and crude oil, natural gas gathering, transmission, and marketing, and natural gas distribution. Additional information on the Company can be found on the Internet at http://www.swn.com/ .

Southwestern Energy Company

CONTACT: Brad D. Sylvester, CFA, Manager, Investor Relations ofSouthwestern Energy Company, +1-281-618-4897

Web site: http://www.swn.com/