MONTHLY POWER PRODUCTION SUMMARY FOR: SEP 2011 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 172646 408 172238 408 172238 ALBENI FALLS DAM ON 21870 143 21727 143 21727 BIG CLIFF DAM 5959 30 5929 30 5929 BONNEVILLE DAM & LAK 384900 2386 382514 1790 383110 COUGAR DAM 8900 45 8855 45 8855 DETROIT DAM 18017 158 17859 158 17859 DEXTER DAM & LAKE ON 7615 13 7602 13 7602 GREEN PETER DAM 5708 51 5657 51 5657 HILLS CREEK DAM & LA 14690 35 14655 35 14655 JOHN DAY DAM & LAKE 617211 1470 615741 1029 616182 LOOKOUT POINT DAM & 29907 93 29814 93 29814 MCNARY DAM & LAKE WA 423872 2880 420992 850 423022 THE DALLES DAM & LAK 485276 720 484556 533 484743 CHIEF JOSEPH DAM & E 681807 779 681028 779 681028 ICE HARBOR DAM 172261 1828 170434 366 171896 LITTLE GOOSE DAM & L 170382 445 169936 267 170114 LOWER MONUMENTAL DAM 179377 411 178966 247 179130 LIBBY DAM & LAKE KOO 106797 443 106354 443 106354 LOST CREEK DAM 21356 130 21226 57 21299 LOWER GRANITE DAM & 181991 1224 180768 489 181502 FOSTER DAM 8069 35 8034 35 8034 GRAND COULEE DAM 1282855 1587 1281268 1587 1281268 HUNGRY HORSE DAM 71252 0 71252 0 71252 TOTAL 5072717 15313 5057404 9447 5063270