MONTHLY POWER PRODUCTION SUMMARY FOR: SEP 1999
 
                    TOTAL GENERATION   TOTAL STATION       NET GENERATION      POWER AUX      NET GENERATION
   PROJECT               IN MWH           USE-MWH           TO BPA-MWH         USE---MWH      REPORTED TO FERC
DWORSHAK DAM               84324             1096                83228            1096             83228
ALBENI FALLS DAM ON        19930              179                19751             179             19751
BIG CLIFF DAM               9301               31                 9270              31              9270
BONNEVILLE DAM & LAK      444131             1650               442481            1238            442894
COUGAR DAM                 13604               41                13563              41             13563
DETROIT DAM                38700              184                38516             184             38516
DEXTER DAM & LAKE ON        2112                7                 2105               7              2105
GREEN PETER DAM            12832               68                12764              68             12764
HILLS CREEK DAM & LA       18644               47                18597              47             18597
JOHN DAY DAM & LAKE       736990             1524               735466            1067            735923
LOOKOUT POINT DAM &        24623              104                24519             104             24519
MCNARY DAM & LAKE WA      470388             2887               467501             850            469538
THE DALLES DAM & LAK      577381             1413               575968            1046            576335
CHIEF JOSEPH DAM & E      955587              877               954710             877            954710
ICE HARBOR DAM            112342             2108               110234             422            111920
LITTLE GOOSE DAM & L      112540              647               111893             388            112152
LOWER MONUMENTAL DAM      114415              358               114057             215            114200
LIBBY DAM & LAKE KOO      214367              544               213823             544            213823
LOST CREEK DAM             18336              205                18131              90             18246
LOWER GRANITE DAM &       115792             1292               114500             517            115275
FOSTER DAM                  4457               96                 4361              96              4361
GRAND COULEE DAM         1803615             5873              1797742            5873           1797742
HUNGRY HORSE DAM          104864                0               104864               0            104864
 
 
TOTAL                    6009275            21231              5988044           14979           5994296