Following the recent completion of its $12 billiondeal for AGLResources Inc., Southern Co.has rolled out a new corporate logo, while renaming its newest subsidiarySouthern Company Gas.

The mergercreated the second-largest utility company in the U.S. in terms of customerbase.

"[Southern Co.'s] recent growth in natural gas hasexpanded our business beyond electricity, providing an excellent opportunity toreview our brand," Chairman, President and CEO Thomas Fanning said in aJuly 11 statement.

The new brand represents the first design change in morethan 20 years, and the Southern Co. system now operates in 18 states, servingmore than 9 million customers.