Exhibit 4.6.2 FIRST AMENDMENT TO CREDIT AGREEMENT AND PLEDGE AGREEMENT FIRST AMENDMENT TO CREDIT AGREEMENT AND PLEDGE AGREEMENT (this "First Amendment"), dated as of September 3, 2004, among, TEXAS GENCO HOLDINGS, INC., a Texas corporation (the...Credit Agreement and Pledge Agreement • November 9th, 2004 • Centerpoint Energy Inc • Electric services • New York
