Exhibit 11 EDISON INTERNATIONAL COMPUTATION OF BASIC AND DILUTED EARNINGS PER SHARE For the Quarter ended March 31 ------------------------------ In thousands, except per-share amounts 2000 1999 --------------- ------------- Consolidated net income $ 109,541 $ 143,211 Basic weighted average shares 344,922 348,327 Diluted weighted average shares 345,633 349,409 Basic earnings per share $0.32 $0.41 Diluted earnings per share $0.32 $0.41