Exhibit 3(a) ARTICLES OF AMENDMENT TO THE ARTICLES OF INCORPORATION OF TXU ELECTRIC COMPANY Pursuant to the provisions of Articles 4.04 and 10.03 of the Texas Business Corporation Act, the undersigned corporation adopts the following Articles of Amendment to its Restated Articles of Incorporation to be effective as set forth herein. ARTICLE ONE The name of the corporation is TXU Electric Company (the "Corporation"). ARTICLE TWO The following amendment to the Restated Articles of Incorporation of the Corporation was adopted by the sole shareholder of the Corporation on November 12, 2001. The Restated Articles of Incorporation are amended to change the name of the Corporation. The amendment alters or changes Article I of the Restated Articles of Incorporation and the full text of each provision of Article I is amended to read as follows: "ARTICLE I. The name of the Corporation is TXU US Holdings Company." ARTICLE THREE The number of shares of the Corporation outstanding at the time of such adoption was 58,802,600; and the number of shares entitled to vote thereon was 58,802,600. ARTICLE FOUR The approval of the Articles of Amendment was duly authorized by all action required by the laws under which TXU Electric Company is incorporated and by its constituent documents. The number of outstanding shares of each class or series of stock of TXU Electric Company entitled to vote, with other shares or as a class, on the Articles of Amendment are as follows: Number of Shares Class or Series Number of Shares Outstanding Entitled to Vote as a Class or Series 58,802,600 Common N/A ARTICLE FIVE The number of shares, not entitled to vote only as a class, voted for and against the Articles of Amendment, respectively, and, if the shares of any class or series are entitled to vote as a class, the number of shares of each such class or series voted for and against the Articles of Amendment, are as follows: Total Voted Total Voted Class or Series Number of Shares Entitled to For Against Vote as Class or Series Voted For Voted Against 58,802,600 0 Common N/A N/A ARTICLE SIX These Articles of Amendment do not necessitate an exchange, reclassification or cancellation of issued shares. ARTICLE SEVEN These Articles of Amendment do not effect a change in stated capital. ARTICLE EIGHT These Articles of Amendment shall be effective on January 1, 2002, at 12:15 A.M. Central Standard Time in accordance with the provisions of Article 10.03 of the Texas Business Corporation Act. TXU ELECTRIC COMPANY By: /s/ John F. Stephens, Jr. -------------------------- John F. Stephens, Jr. An Authorized Officer 2