MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2004 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 167156 1455 165701 1455 165701 ALBENI FALLS DAM ON 25821 166 25655 166 25655 BIG CLIFF DAM 7457 32 7425 32 7425 BONNEVILLE DAM & LAK 431305 2670 428635 2002 429302 COUGAR DAM 0 0 0 0 0 DETROIT DAM 30200 185 30015 185 30015 DEXTER DAM & LAKE ON 11284 20 11264 20 11264 GREEN PETER DAM 23569 73 23496 73 23496 HILLS CREEK DAM & LA 13326 62 13264 62 13264 JOHN DAY DAM & LAKE 860887 1493 859394 1045 859842 LOOKOUT POINT DAM & 29742 89 29653 89 29653 MCNARY DAM & LAKE WA 468114 2976 465138 780 467334 THE DALLES DAM & LAK 545790 1168 544622 864 544926 CHIEF JOSEPH DAM & E 944677 871 943806 871 943806 ICE HARBOR DAM 140136 2119 138017 424 139712 LITTLE GOOSE DAM & L 408352 620 407732 372 407980 LOWER MONUMENTAL DAM 361187 479 360708 287 360900 LIBBY DAM & LAKE KOO 78758 499 78259 499 78259 LOST CREEK DAM 37155 382 36773 168 36987 LOWER GRANITE DAM & 403554 1481 402073 592 402962 FOSTER DAM 9554 75 9479 75 9479 GRAND COULEE DAM 1777178 9217 1767961 9217 1767961 HUNGRY HORSE DAM 98403 0 98403 0 98403 TOTAL 6873605 26132 6847473 19280 6854326