Exhibit 12.3 Coso Power Developers (Navy II Partnership) Ratio of Earnings to Fixed Charges Ratio of EBITDA before cumulative effect of accounting change to Fixed Charges Ratio of EBITDA before cumulative effect of accounting change less Capital Expenditures to Fixed Charges (dollars in thousands) Year Ended December 31, --------------------------------------------- 1994 1995 1996 1997 1998 Net income $51,934 $58,394 $68,240 $66,702 $70,457 Cumulative effect of accounting change - - - - 1,664 --------------------------------------------- Income before cumulative effect of accounting change 51,934 58,394 68,240 66,702 72,121 Fixed charges 14,736 13,868 12,149 10,532 8,122 --------------------------------------------- Earnings plus fixed charges $66,670 $72,262 $80,389 $77,234 $80,243 ======= ======= ======= ======= ======= Fixed charges (Interest expense which includes amortization of debt issuance costs $14,736 $13,868 $12,149 $10,532 $ 8,122 ======= ======= ======= ======= ======= Ratio of earnings to fixed charges 4.5x 5.2x 6.6x 7.3x 9.9x ======= ======= ======= ======= ======= Net income $51,934 $58,394 $68,240 $66,702 $70,457 Interest expense 14,736 13,868 12,149 10,532 8,122 Depreciation and amortization 11,800 12,848 13,054 13,354 13,744 Cumulative effect of accounting change - - - - 1,664 -------------------------------------------- EBITDA before cumulative effect of accounting change $78,470 $85,110 $93,443 $90,588 $93,987 ======= ======= ======= ======= ======= EBITDA before cumulative effect of accounting change $78,470 $85,110 9$3,443 $90,588 $93,987 Capital expenditures 18,894 6,367 4,333 7,992 6,939 --------------------------------------------- EBITDA before cumulative effect of accounting change less capital expenditures $59,576 $78,743 $89,110 $82,596 $87,048 ======= ======= ======= ======= ======= Ratio of EBITDA before cumulative effect of accounting change to fixed charges 5.3x 6.1x 7.7x 8.6x 11.6x ======= ======= ======= ======= ======= Ratio of EBITDA before cumulative effect of accounting change less capital expenditures to fixed charges 4.0x 5.7x 7.3x 7.8x 10.7x ======= ======= ======= ======= ======= Three Months Ended March 31, 1999 ----------------------------------- Two Months One Month Three Months Ended Ended Ended February March 31, March 31, 1998 1999 1999 Total Net income $14,104 $9,366 $1,947 $11,313 Cumulative effect of accounting change - - - - -------------------------------------------------- Income before cumulative effect of accounting change 14,104 9,366 1,947 11,313 Fixed charges 2,235 953 1,792 2,745 -------------------------------------------------- Earnings plus fixed charges $16,339 $10,319 $3,739 $14,058 ======= ======= ====== ======= Fixed charges (Interest expense which includes amortization of debt issuance costs $ 2,235 $ 953 $1,792 $ 2,745 ======= ======= ====== ======= Ratio of earnings to fixed charges 7.3x 10.8x 2.1x 5.1x ======= ======= ====== ======= Net income $ 14,104 $ 9,366 $ ,947 $11,313 Interest expense 2,235 953 1,792 2,745 Depreciation and amortization 3,493 2,339 1,188 3,527 Cumulative effect of accounting change - - - - -------------------------------------------------- EBITDA before cumulative effect of accounting change $19,832 $12,658 $4,927 $17,585 ======= ======= ====== ======= EBITDA before cumulative effect of accounting change $19,832 $12,658 $4,927 $17,585 Capital expenditures 808 1,126 191 1,317 -------------------------------------------------- EBITDA before cumulative effect of accounting change less capital expenditures $19,024 $11,532 $4,736 $16,268 ======= ======= ====== ======= Ratio of EBITDA before cumulative effect of accounting change to fixed charges 8.9x 13.3x 2.7x 6.4x ======= ======= ====== ======= Ratio of EBITDA before cumulative effect of accounting change less capital expenditures to fixed charges 8.5x 12.1x 2.6x 5.9x ======= ======= ====== =======