MONTHLY POWER PRODUCTION SUMMARY FOR: APR 2008 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 301252 675 300577 675 300577 ALBENI FALLS DAM ON 16979 173 16806 173 16806 BIG CLIFF DAM 6471 52 6419 52 6419 BONNEVILLE DAM & LAK 276568 2874 273694 2156 274412 COUGAR DAM 13964 83 13881 83 13881 DETROIT DAM 23000 176 22824 176 22824 DEXTER DAM & LAKE ON 6698 9 6689 9 6689 GREEN PETER DAM 19193 0 19193 0 19193 HILLS CREEK DAM & LA 16204 65 16139 65 16139 JOHN DAY DAM & LAKE 657329 1613 655716 1129 656200 LOOKOUT POINT DAM & 27482 156 27326 156 27326 MCNARY DAM & LAKE WA 396737 2136 394601 760 395977 THE DALLES DAM & LAK 450908 1302 449606 963 449944 CHIEF JOSEPH DAM & E 797581 1049 796532 1049 796532 ICE HARBOR DAM 87981 2222 85759 444 87536 LITTLE GOOSE DAM & L 183663 542 183121 325 183338 LOWER MONUMENTAL DAM 139552 556 138996 334 139218 LIBBY DAM & LAKE KOO 61200 768 60432 768 60432 LOST CREEK DAM 26126 290 25836 128 25998 LOWER GRANITE DAM & 177284 1149 176135 460 176825 FOSTER DAM 7928 89 7839 89 7839 GRAND COULEE DAM 1287919 3604 1284315 3604 1284315 HUNGRY HORSE DAM 87655 0 87655 0 87655 TOTAL 5069674 19582 5050092 13597 5056076