MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2000 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 124812 1184 123628 1184 123628 ALBENI FALLS DAM ON 17377 158 17219 158 17219 BIG CLIFF DAM 11673 35 11638 35 11638 BONNEVILLE DAM & LAK 498572 3667 494905 2750 495822 COUGAR DAM 20285 85 20200 85 20200 DETROIT DAM 45200 194 45006 194 45006 DEXTER DAM & LAKE ON 6655 32 6623 32 6623 GREEN PETER DAM 13960 46 13914 46 13914 HILLS CREEK DAM & LA 17861 36 17825 36 17825 JOHN DAY DAM & LAKE 929800 1740 928060 1218 928582 LOOKOUT POINT DAM & 37210 150 37060 150 37060 MCNARY DAM & LAKE WA 554648 3009 551639 780 553868 THE DALLES DAM & LAK 642187 1289 640898 954 641233 CHIEF JOSEPH DAM & E 1305266 869 1304397 869 1304397 ICE HARBOR DAM 120178 2122 118056 424 119754 LITTLE GOOSE DAM & L 293461 540 292921 324 293137 LOWER MONUMENTAL DAM 282818 441 282377 265 282553 LIBBY DAM & LAKE KOO 55624 628 54996 628 54996 LOST CREEK DAM 37930 363 37567 160 37770 LOWER GRANITE DAM & 338601 1361 337240 544 338057 FOSTER DAM 6980 115 6865 115 6865 GRAND COULEE DAM 2123172 7424 2115748 7424 2115748 HUNGRY HORSE DAM 40786 0 40786 0 40786 TOTAL 7525056 25488 7499568 18375 7506681