EXHIBIT 11 THE AES CORPORATION STATEMENT OF COMPUTATION OF EARNINGS PER SHARE - ----------------------------------------------------------------------------------------------------------------- Year Ended December 31, 1997 1998 1999 - ----------------------------------------------------------------------------------------------------------------- ($ in millions, except per share amounts) BASIC WEIGHTED AVERAGE SHARES OUTSTANDING 166.6 177.5 191.5 ------------- ------------- ------------- NET INCOME BEFORE EXTRAORDINARY ITEMS $ 188 $ 307 $ 245 ============= ============= ============= PER SHARE AMOUNT $ 1.13 $ 1.73 $ 1.28 ============= ============= ============= DILUTED Weighted Average Number of Shares of Common Stock Outstanding 166.6 177.5 191.5 Effect of Dilutive Stock Options and Warrants Based on the Treasury Stock Method Using Ending Market Price 4.4 4.3 4.5 Stock Units Allocated to the Deferred Compensation Plans for Executives and Directors 0.5 0.3 0.2 Effect of Convertible Debt - Based on the If-Converted Method 6.3 6.9 - ------------- ------------- ------------- WEIGHTED AVERAGE SHARES OUTSTANDING 177.8 189.0 196.2 ============= ============= ============= NET INCOME BEFORE EXTRAORDINARY ITEMS $ 188 $ 307 $ 245 Additional Contribution to Net Income if Convertible securities are fully converted 10 9 - ------------- ------------- ------------- ADJUSTED NET INCOME BEFORE EXTRAORDINARY ITEMS $ 198 $ 316 $ 245 ============= ============= ============= PER SHARE AMOUNT $ 1.11 $ 1.67 1.25 ============= ============= =============