MONTHLY POWER PRODUCTION SUMMARY FOR: SEP 1998
 
                    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               37791              361                37430             361             37430
ALBENI FALLS DAM ON        21172              193                20979             193             20979
BIG CLIFF DAM               7183               30                 7153              30              7153
BONNEVILLE DAM & LAK      370208             1608               368600            1206            369002
COUGAR DAM                 14796               34                14762              34             14762
DETROIT DAM                29900              181                29719             181             29719
DEXTER DAM & LAKE ON           0                0                    0               0                 0
GREEN PETER DAM            16314               65                16249              65             16249
HILLS CREEK DAM & LA       17711               36                17675              36             17675
JOHN DAY DAM & LAKE       593629             1588               592041            1112            592517
LOOKOUT POINT DAM &        21199              114                21085             114             21085
MCNARY DAM & LAKE WA      397728             2891               394837             850            396878
THE DALLES DAM & LAK      468639             1370               467269            1014            467625
CHIEF JOSEPH DAM & E      717083              987               716096             987            716096
ICE HARBOR DAM            133405             1973               131432             395            133010
LITTLE GOOSE DAM & L      132497              553               131944             332            132165
LOWER MONUMENTAL DAM      137390              433               136957             260            137130
LIBBY DAM & LAKE KOO      159256              515               158741             515            158741
LOST CREEK DAM             22111              171                21940              75             22036
LOWER GRANITE DAM &       134584             1334               133250             534            134050
FOSTER DAM                  6059               80                 5979              80              5979
GRAND COULEE DAM         1311865             5741              1306124            5741           1306124
HUNGRY HORSE DAM           49550                0                49550               0             49550
 
 
TOTAL                    4800070            20258              4779812           14113           4785956