March 7 (Reuters) - Nrg Energy Inc:
* RETIRING DIRECTORS ARE WALT YOUNG, EVAN SILVERSTEIN AND BARRY SMITHERMAN
* NRG ENERGY - FOLLOWING CHANGES, BOARD SIZE WILL BE REDUCED TO 12 DIRECTORS
* APPOINTMENT OF TWO NEW INDEPENDENT DIRECTORS: MATTHEW CARTER AND HEATHER COX Source text for Eikon: Further company coverage: