MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2012 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 184890 500 184390 500 184390 ALBENI FALLS DAM ON 864 126 738 126 738 BIG CLIFF DAM 7883 58 7825 58 7825 BONNEVILLE DAM & LAK 550550 2234 548316 1676 548874 COUGAR DAM 12613 89 12524 89 12524 DETROIT DAM 25594 211 25383 211 25383 DEXTER DAM & LAKE ON 10094 9 10085 9 10085 GREEN PETER DAM 20355 65 20290 65 20290 HILLS CREEK DAM & LA 6296 33 6263 33 6263 JOHN DAY DAM & LAKE 1191522 1699 1189822 1190 1190332 LOOKOUT POINT DAM & 29845 118 29727 118 29727 MCNARY DAM & LAKE WA 618806 2976 615830 780 618026 THE DALLES DAM & LAK 843956 744 843212 551 843405 CHIEF JOSEPH DAM & E 1214302 851 1213451 851 1213451 ICE HARBOR DAM 249712 2200 247512 440 249272 LITTLE GOOSE DAM & L 361995 526 361469 315 361680 LOWER MONUMENTAL DAM 398834 463 398371 278 398556 LIBBY DAM & LAKE KOO 229821 572 229249 572 229249 LOST CREEK DAM 30972 291 30681 128 30844 LOWER GRANITE DAM & 397380 1342 396039 537 396844 FOSTER DAM 9651 56 9595 56 9595 GRAND COULEE DAM 2899547 1585 2897962 1585 2897962 HUNGRY HORSE DAM 176424 0 176424 0 176424 TOTAL 9471906 16748 9455158 10167 9461740