1 EXHIBIT 10(aa) [HOUSTON INDUSTRIES INCORPORATED LETTERHEAD] July 17, 1996 Mr. Lee W. Hogan 11006 Hedwig Green Houston, Texas 77026 Dear Lee: This letter confirms in writing our agreement regarding the supplemental pension that Houston Industries...Supplemental Pension Agreement • October 15th, 1996 • Houston Lighting & Power Co • Electric services • Texas
