On May 31, 2007, Duquesne Light Holdings completed its merger with a consortium led by Macquarie Infrastructure Partners and The DUET Group. Under the terms of the merger agreement, the Macquarie consortium acquired all outstanding shares of Duquesne Light Holdings for $20 per share in cash. Additionally, a partial dividend of $.2252745 per share was issued on June 8, 2007, to holders of record on May 30, 2007.

Trading of Duquesne Light Holdings common stock on the New York Stock Exchange ended on May 31, 2007.

Subsequently, the paying agent, Wells Fargo Shareowner Services, mailed checks for the merger consideration to the address of record of shareholders who held shares in the Duquesne Light dividend reinvestment and stock purchase plan, as well as to those who held shares electronically in book entry. Shareholders physically possessing common stock certificates were mailed instructions on how to exchange stock certificate(s) for the merger consideration.

As a result of the merger being completed, the Duquesne Light Shareholder Relations Department was closed on Sept. 14, 2007. Please direct all future correspondence to Wells Fargo Shareowner Services.