MONTHLY POWER PRODUCTION SUMMARY FOR: SEP 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 107846 721 107125 721 107125 ALBENI FALLS DAM ON 12485 189 12296 189 12296 BIG CLIFF DAM 7050 29 7021 29 7021 BONNEVILLE DAM & LAK 313713 2267 311446 1700 312013 COUGAR DAM 9902 34 9868 34 9868 DETROIT DAM 28100 155 27945 155 27945 DEXTER DAM & LAKE ON 2241 4 2237 4 2237 GREEN PETER DAM 15785 68 15717 68 15717 HILLS CREEK DAM & LA 12707 40 12667 40 12667 JOHN DAY DAM & LAKE 483059 1526 481533 1068 481991 LOOKOUT POINT DAM & 23618 100 23518 100 23518 MCNARY DAM & LAKE WA 338357 2160 336197 850 337507 THE DALLES DAM & LAK 379173 1226 377947 907 378266 CHIEF JOSEPH DAM & E 617681 897 616784 897 616784 ICE HARBOR DAM 104270 2052 102218 410 103860 LITTLE GOOSE DAM & L 104826 525 104302 315 104511 LOWER MONUMENTAL DAM 107515 516 106998 310 107205 LIBBY DAM & LAKE KOO 155023 600 154423 600 154423 LOST CREEK DAM 16509 139 16370 61 16448 LOWER GRANITE DAM & 108047 1324 106723 529 107517 FOSTER DAM 6149 62 6087 62 6087 GRAND COULEE DAM 1122623 1999 1120624 1999 1120624 HUNGRY HORSE DAM 57006 0 57006 0 57006 TOTAL 4133686 16633 4117052 11050 4122636