FINANCIAL HIGHLIGHTS

a - Financial information reflects accounting for the 1997 merger with PanEnergy Corp as a pooling of interests. As a result, the financial information gives effect to the merger as if it had occurred January 1, 1997.

b - Units of measure used are gigawatt- hours (GWh), trillion British thermal units (TBtu), trillion British thermal units per day (TBtu/d) and thousand barrels per day (MBbl/d), as applicable.

c - Includes Trading and Marketing and Field Services volumes.

d - Excludes Electric Operations volumes.

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