MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2010
 
                    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               61616              450                61166             450             61166
ALBENI FALLS DAM ON        24980              147                24833             147             24833
BIG CLIFF DAM               8914               10                 8904              10              8904
BONNEVILLE DAM & LAK      313058             2610               310448            1958            311100
COUGAR DAM                  8738               98                 8640              98              8640
DETROIT DAM                39794               40                39754              40             39754
DEXTER DAM & LAKE ON        8045               12                 8033              12              8033
GREEN PETER DAM            29149               69                29080              69             29080
HILLS CREEK DAM & LA       12282               68                12214              68             12214
JOHN DAY DAM & LAKE       732376             1479               730897            1035            731341
LOOKOUT POINT DAM &        32920              128                32792             128             32792
MCNARY DAM & LAKE WA      441336             3720               437616             780            440556
THE DALLES DAM & LAK      480405              765               479640             566            479839
CHIEF JOSEPH DAM & E      948505              851               947654             851            947654
ICE HARBOR DAM            157937             1952               155985             390            157547
LITTLE GOOSE DAM & L      236264              475               235789             285            235979
LOWER MONUMENTAL DAM      194778              519               194259             311            194467
LIBBY DAM & LAKE KOO      129239              556               128683             556            128683
LOST CREEK DAM             24151              314                23837             138             24013
LOWER GRANITE DAM &       241546             1351               240195             540            241006
FOSTER DAM                  7442               75                 7367              75              7367
GRAND COULEE DAM         1665840             2241              1663599            2241           1663599
HUNGRY HORSE DAM           93964                0                93964               0             93964
 
 
TOTAL                    5893279            17930              5875349           10749           5882530