EXHIBIT 11 CALPINE CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) (UNAUDITED) THREE MONTHS ENDED MARCH 31, -------------------- 1997 1996 -------- -------- Net loss ..................................... $ (4,040) $ (294) ======== ======== Primary earnings per share Average number of common shares outstanding 19,852 10,388 Conversion of preferred stock ............. -- 263 -------- -------- 19,852 10,651 -------- -------- Primary earnings per share ............ $ (0.20) $ (0.03) ======== ======== Fully diluted earnings per share Average number of common shares outstanding 19,852 10,388 Conversion of preferred stock ............. -- 263 -------- -------- 19,852 10,651 -------- -------- Fully diluted earnings per share ...... $ (0.20) $ (0.03) ======== ========