<ARTICLE> 5
<CIK>      0001088873
<NAME>     COSO POWER 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>                                             818                  13,042
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