MONTHLY POWER PRODUCTION SUMMARY FOR: APR 2005
 
                    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              149269              163               149106             163            149106
ALBENI FALLS DAM ON        19177              182                18995             182             18995
BIG CLIFF DAM               3156               45                 3111              45              3111
BONNEVILLE DAM & LAK      340661             2770               337891            2078            338584
COUGAR DAM                     0                0                    0               0                 0
DETROIT DAM                13350              173                13177             173             13177
DEXTER DAM & LAKE ON        2398               21                 2377              21              2377
GREEN PETER DAM            11104               24                11080              24             11080
HILLS CREEK DAM & LA        3524               71                 3453              71              3453
JOHN DAY DAM & LAKE       615858             1555               614303            1088            614770
LOOKOUT POINT DAM &        12002              129                11873             129             11873
MCNARY DAM & LAKE WA      380095             2118               377977             760            379335
THE DALLES DAM & LAK      423040             1209               421831             895            422145
CHIEF JOSEPH DAM & E      742717             1002               741715            1002            741715
ICE HARBOR DAM            112956             2156               110800             431            112525
LITTLE GOOSE DAM & L      216650              615               216034             369            216280
LOWER MONUMENTAL DAM      230827              561               230266             337            230490
LIBBY DAM & LAKE KOO       67170              605                66565             605             66565
LOST CREEK DAM              8927              278                 8649             122              8805
LOWER GRANITE DAM &       222047             1317               220730             527            221520
FOSTER DAM                 10076               96                 9980              96              9980
GRAND COULEE DAM         1235958             3307              1232651            3307           1232651
HUNGRY HORSE DAM          114361                0               114361               0            114361
 
 
TOTAL                    4935323            18397              4916926           12424           4922898