• Effluent begins filling reservoir • Largest components delivered • Main electrical building energized

Exhibit runs through Dec. 14 at Archives Museum in company’s corporate headquarters, downtown Birmingham

Diluted GAAP earnings per share (EPS) of $0.08 versus loss per share of $(0.04) in third quarter 2011

Communities, organizations receive funding to plant trees

TRIG™ technology allows for low-carbon generation using an affordable, abundant coal resource

Rising Natural Gas Prices Result in Reported Losses on Hedges Used by Wholesale Services to Lock in Economic Margins; Earnings Will Be Realized When Natural Gas Inventory is Withdrawn from Storage

Georgia Public Service Commission-approved program will add new natural gas vehicle fueling stations funded from AGL’s Universal Service Fund

Communities, organizations receive funding for signs

Carrier continues its commitment to high quality iDEN Push To Talk (PTT) technology

Diluted earnings per share (EPS) of $0.28 versus $0.23 in second quarter 2011; excluding Nicor merger-related expenses, adjusted diluted EPS of $0.30 for second quarter 2012 compared to $0.33 for second quarter 2011