July 17, 2008

Webcast Alert: Southwestern Energy Company Invites You to Join Its Second Quarter 2008 Earnings Conference Call on the Web

HOUSTON, July 17 /PRNewswire-FirstCall/ -- In conjunction with Southwestern Energy Company's 2008 Second Quarter earnings release, you are invited to listen to its conference call that will be broadcast live over the internet on Thursday, July 31, 2008, at 10:00 a.m. EDT with Harold M. Korell, Chairman and Chief Executive Officer of Southwestern Energy Company. Southwestern Energy Company announces the following Webcast:

   What:     Southwestern Energy Company's Second Quarter 2008 Earnings    When:     July 31, 2008 @ 10:00 a.m. EDT    Where:    http://www.videonewswire.com/event.asp?id=49415    How:      Live over the Internet -- Simply log on to the web at the             address above or go to the Company's Web site:             http://www.swn.com/    Contact:  Brad Sylvester, Manager Investor Relations at (281) 618-4897.    

If you are unable to participate during the live webcast, the call will be archived on the Company's Web site: http://www.swn.com/. To access the replay, look under "Latest News & Information."

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

Audio: http://www.videonewswire.com/event.asp?id=49415

Southwestern Energy Company

CONTACT: Brad Sylvester, Manager Investor Relations of SouthwesternEnergy Company, +1-281-618-4897

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