MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2002 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 255402 477 254925 477 254925 ALBENI FALLS DAM ON 17072 159 16913 159 16913 BIG CLIFF DAM 12698 35 12663 35 12663 BONNEVILLE DAM & LAK 387937 2414 385523 1810 386126 COUGAR DAM 0 0 0 0 0 DETROIT DAM 53400 192 53208 192 53208 DEXTER DAM & LAKE ON 5402 26 5376 26 5376 GREEN PETER DAM 24754 94 24660 94 24660 HILLS CREEK DAM & LA 13940 47 13893 47 13893 JOHN DAY DAM & LAKE 919788 1674 918114 1172 918616 LOOKOUT POINT DAM & 35834 131 35703 131 35703 MCNARY DAM & LAKE WA 552757 2976 549781 780 551977 THE DALLES DAM & LAK 603935 1221 602714 904 603031 CHIEF JOSEPH DAM & E 1121769 906 1120863 906 1120863 ICE HARBOR DAM 122512 2137 120375 427 122085 LITTLE GOOSE DAM & L 298806 618 298188 371 298435 LOWER MONUMENTAL DAM 423424 521 422903 313 423111 LIBBY DAM & LAKE KOO 94350 625 93725 625 93725 LOST CREEK DAM 34264 257 34007 113 34151 LOWER GRANITE DAM & 283158 1397 281761 559 282599 FOSTER DAM 8065 110 7955 110 7955 GRAND COULEE DAM 1858583 10534 1848049 10534 1848049 HUNGRY HORSE DAM 141992 0 141992 0 141992 TOTAL 7269842 26551 7243291 19785 7250058