MONTHLY POWER PRODUCTION SUMMARY FOR: DEC 2006 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 42119 320 41799 320 41799 ALBENI FALLS DAM ON 14892 226 14666 226 14666 BIG CLIFF DAM 11461 57 11404 57 11404 BONNEVILLE DAM & LAK 460538 2784 457754 2088 458450 COUGAR DAM 7607 176 7431 176 7431 DETROIT DAM 29300 224 29076 224 29076 DEXTER DAM & LAKE ON 10072 23 10049 23 10049 GREEN PETER DAM 44340 77 44263 77 44263 HILLS CREEK DAM & LA 14473 105 14368 105 14368 JOHN DAY DAM & LAKE 753044 1547 751497 1083 751961 LOOKOUT POINT DAM & 43869 157 43712 157 43712 MCNARY DAM & LAKE WA 490651 1674 488977 850 489801 THE DALLES DAM & LAK 621566 1563 620003 1157 620409 CHIEF JOSEPH DAM & E 859950 1599 858351 1599 858351 ICE HARBOR DAM 146303 2491 143812 498 145804 LITTLE GOOSE DAM & L 138841 624 138217 375 138466 LOWER MONUMENTAL DAM 147493 646 146847 388 147105 LIBBY DAM & LAKE KOO 295466 915 294551 915 294551 LOST CREEK DAM 29517 630 28887 277 29240 LOWER GRANITE DAM & 134543 1444 133098 578 133965 FOSTER DAM 6484 112 6372 112 6372 GRAND COULEE DAM 1633858 3772 1630086 3772 1630086 HUNGRY HORSE DAM 34110 0 34110 0 34110 TOTAL 5970496 21167 5949330 15056 5955440