<ARTICLE> 5 <CIK> 0001088869 <NAME> COSO ENERGY DEVELOPERS <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR 6-MOS <FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999 <PERIOD-START> JAN-01-1998 JAN-01-1999 <PERIOD-END> DEC-31-1998 JUN-30-1999 <CASH> 0 8,153 <SECURITIES> 290 13,507 <RECEIVABLES> 19,835 8,615 <ALLOWANCES> 0 0 <INVENTORY> 0 0 <CURRENT-ASSETS> 21,651 30,640 <PP&E> 311,940 225,346 <DEPRECIATION> 110,340 64,235 <TOTAL-ASSETS> 228,087 220,032 <CURRENT-LIABILITIES> 26,938 24,796 <BONDS> 37,958 107,900 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 0 0 <OTHER-SE> 0 0 <TOTAL-LIABILITY-AND-EQUITY> 228,087 220,032 <SALES> 107,199 28,220 <TOTAL-REVENUES> 108,380 28,670 <CGS> 0 0 <TOTAL-COSTS> 0 0 <OTHER-EXPENSES> 44,687 19,463 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 6,267 5,480 <INCOME-PRETAX> 0 0 <INCOME-TAX> 0 0 <INCOME-CONTINUING> 0 0 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 1,822 <CHANGES> 953 0 <NET-INCOME> 56,473 1,905 <EPS-BASIC> 0 0 <EPS-DILUTED> 0 0