Updated as of: 08-27-2008 2000 Constrained operations ARE expected in the AE, AEP, APS, DPL, DOM, DUQ, PN and PS zones on 8/28/08. Constrained operations ARE expected in the AE, AEP, APS, DPL, DOM, DUQ, PN and PS zones on 8/29/08. No portion of the 600/400mw contract is expected to be limited on 8/28/2008. Data updated as of WED AUG 27 18:45:31 2008. MID ATLANTIC REGION HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 27427 25900 25235 24789 25068 27255 29012 31854 33289 34780 35758 36661 pm 37291 38225 38595 39000 38900 38581 37105 36756 36862 35409 32488 29598 08/28/08 am 27082 25739 24933 24547 24879 26536 29446 31783 33181 34431 35621 36579 pm 37202 37793 38181 38397 38614 38414 37362 36760 36983 35620 32720 29792 08/29/08 am 27378 25927 25029 24564 24922 26235 28414 30942 32935 34474 35922 36904 pm 37503 38089 38525 38748 38857 38706 37241 35557 35507 34749 32377 30035 08/30/08 am 27791 26168 25091 24417 24192 24325 24375 26041 29011 31754 33935 35564 pm 36592 37269 37785 38127 38561 38314 37333 35822 35942 35347 33380 31012 08/31/08 am 28753 26908 25736 24866 24502 24275 24009 25118 27700 30507 32833 34719 pm 36137 37222 37933 38369 38852 38628 37578 36517 36756 35636 33273 30805 09/01/08 am 28904 27044 25823 24904 24533 24280 24072 25103 27559 30235 32437 34138 pm 35480 36418 37079 37350 37753 37615 36593 35599 35742 34492 32158 29813 09/02/08 am 27819 26248 25168 24664 24924 26053 27806 30115 32652 35114 37259 38928 pm 40420 41625 42431 43008 43266 42552 40666 39114 39060 37355 34347 31359 AP HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 4789 4400 4370 4330 4370 4666 4945 5279 5428 5536 5690 5782 pm 5837 5500 5425 5600 5800 5713 5720 5555 5546 5600 5195 4765 08/28/08 am 4560 4334 4209 4140 4179 4448 4828 5120 5290 5432 5591 5687 pm 5734 5791 5809 5823 5883 5924 5876 5737 5752 5666 5254 4796 08/29/08 am 4413 4198 4076 4009 4036 4276 4588 4883 5141 5351 5566 5707 pm 5783 5871 5910 5928 5969 6001 5896 5658 5600 5526 5173 4751 08/30/08 am 4455 4180 4015 3897 3854 3900 3885 4108 4558 4994 5363 5625 pm 5788 5917 6029 6092 6154 6147 6001 5701 5580 5491 5138 4724 08/31/08 am 4352 4061 3907 3779 3709 3713 3650 3786 4201 4630 4993 5312 pm 5576 5778 5925 6029 6122 6121 5929 5657 5641 5492 5122 4736 09/01/08 am 4365 4076 3920 3795 3737 3736 3690 3828 4218 4635 4976 5283 pm 5549 5747 5883 5988 6079 6083 5869 5637 5643 5503 5133 4747 09/02/08 am 4451 4212 4056 3965 3982 4176 4424 4660 5034 5385 5817 6143 pm 6448 6715 6951 7076 7195 7176 6997 6719 6526 6295 5721 5219 AEP HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 14360 14200 13667 13276 13388 14293 16300 16635 16942 16930 17350 17583 pm 17801 17820 17839 17699 17664 17439 17219 16861 16784 16765 15710 14875 08/28/08 am 14186 13512 13087 12867 12932 13530 14598 15283 15818 16293 16949 17393 pm 17787 18178 18340 18427 18396 18322 18036 17595 17577 17533 16467 15181 08/29/08 am 13843 13175 12787 12576 12627 13166 14063 14830 15503 16169 16805 17227 pm 17682 18061 18268 18358 18409 18287 17894 17288 16991 17070 16094 14824 08/30/08 am 13796 13070 12584 12265 12165 12230 12306 12662 13620 14585 15402 16076 pm 16601 17022 17394 17703 17972 18097 17798 17219 16765 16619 15706 14603 08/31/08 am 13605 12912 12435 12137 11958 11938 11867 12119 13077 14041 14770 15523 pm 16271 16850 17294 17684 18003 18262 18038 17545 17227 17108 16195 15071 09/01/08 am 14016 13336 12860 12569 12378 12382 12360 12636 13617 14570 15287 16051 pm 16837 17424 17872 18223 18547 18823 18585 18075 17761 17644 16711 15527 09/02/08 am 14446 13794 13323 13051 13105 13580 14561 15312 16137 16963 17933 18728 pm 19573 20257 20848 21173 21546 21586 21424 20709 20254 19951 18695 17054 DAYTON HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 1975 1834 1751 1669 1650 1877 2065 2191 2275 2387 2433 2469 pm 2569 2610 2620 2612 2562 2510 2440 2377 2350 2326 2151 1949 08/28/08 am 1845 1742 1670 1633 1640 1734 1964 2105 2165 2234 2314 2366 pm 2429 2488 2524 2539 2569 2573 2540 2523 2527 2481 2306 2102 08/29/08 am 1971 1846 1766 1718 1718 1810 1990 2133 2243 2348 2458 2517 pm 2597 2662 2701 2705 2721 2689 2623 2515 2454 2437 2282 2069 08/30/08 am 1864 1721 1635 1577 1547 1557 1584 1628 1763 1908 2034 2124 pm 2197 2266 2328 2388 2444 2460 2418 2328 2271 2265 2113 1937 08/31/08 am 1735 1612 1541 1483 1455 1448 1463 1481 1598 1733 1864 1979 pm 2103 2196 2272 2353 2428 2488 2474 2408 2383 2360 2197 2032 09/01/08 am 1805 1676 1603 1540 1510 1497 1513 1530 1651 1789 1925 2044 pm 2183 2280 2355 2429 2501 2565 2549 2470 2432 2408 2244 2077 09/02/08 am 1928 1817 1741 1701 1707 1810 2029 2164 2285 2416 2589 2717 pm 2864 3008 3126 3194 3243 3278 3230 3121 3025 2917 2649 2389 COMED HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 10808 9910 9450 9111 8947 9325 9553 10743 11971 12975 14020 14043 pm 14721 15000 15548 15668 15900 15969 15701 14963 14301 14313 13792 12614 08/28/08 am 11936 10934 10213 9758 9564 9676 10321 11211 12259 13225 14112 15028 pm 15763 16408 16998 17274 17348 17155 16712 15881 15264 15250 14499 13247 08/29/08 am 12169 11179 10444 9921 9686 9675 10076 10862 12044 13111 13957 14787 pm 15240 15423 15524 15361 14948 14308 13535 12722 12200 12148 11764 10904 08/30/08 am 10040 9297 8803 8460 8243 8215 8125 8220 8988 10105 11191 12109 pm 12647 13067 13123 13187 13127 12757 12386 11887 11462 11644 11460 10706 08/31/08 am 9990 9287 8759 8425 8176 8068 7825 7719 8258 9214 10193 11154 pm 11838 12437 12725 13029 13148 13082 12897 12555 12165 12385 12179 11360 09/01/08 am 10545 9768 9215 8779 8523 8366 8118 8010 8569 9647 10854 12053 pm 12945 13744 14152 14535 14671 14638 14397 13946 13471 13568 13175 12254 09/02/08 am 11407 10543 9920 9536 9306 9384 9907 10796 12314 13884 15376 16796 pm 18025 18887 19509 19735 19745 19422 18724 17902 17076 16864 16149 14780 DUQUESNE HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 1504 1466 1430 1373 1385 1499 1592 1679 1759 1839 1869 1910 pm 1900 1900 1919 1869 1859 1802 1790 1721 1740 1701 1575 1460 08/28/08 am 1431 1373 1337 1311 1331 1402 1499 1583 1681 1751 1810 1851 pm 1873 1886 1902 1910 1904 1890 1839 1776 1777 1757 1640 1514 08/29/08 am 1435 1389 1352 1326 1340 1407 1496 1598 1709 1801 1878 1936 pm 1977 2006 2034 2049 2041 2004 1920 1830 1803 1790 1682 1560 08/30/08 am 1469 1394 1353 1324 1307 1323 1328 1378 1495 1616 1725 1821 pm 1899 1939 1980 2018 2023 1994 1913 1832 1803 1778 1680 1574 08/31/08 am 1454 1375 1318 1278 1255 1260 1239 1266 1372 1501 1626 1750 pm 1843 1908 1961 2016 2042 2039 1962 1881 1846 1815 1703 1578 09/01/08 am 1469 1380 1321 1276 1250 1252 1223 1243 1348 1474 1601 1730 pm 1821 1890 1939 1978 2000 1994 1917 1851 1826 1794 1687 1566 09/02/08 am 1452 1380 1337 1316 1313 1367 1436 1509 1636 1772 1916 2055 pm 2172 2277 2358 2422 2440 2389 2254 2146 2067 1986 1834 1686 WESTERN REGION HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++------++------++------++------++------++------++------++------++------++------++------++------+ 08/27/08 am 33436 31810 30668 29759 29740 31660 34455 36527 38375 39667 41362 41787 pm 42828 42830 43351 43448 43785 43433 42870 41477 40721 40705 38423 35663 08/28/08 am 33958 31895 30516 29709 29646 30790 33210 35302 37213 38935 40776 42325 pm 43586 44751 45573 45973 46100 45864 45003 43512 42897 42687 40166 36840 08/29/08 am 33831 31787 30425 29550 29407 30334 32213 34306 36640 38780 40664 42174 pm 43279 44023 44437 44401 44088 43289 41868 40013 39048 38971 36995 34108 08/30/08 am 31624 29662 28390 27523 27116 27225 27228 27996 30424 33208 35715 37755 pm 39132 40211 40854 41388 41720 41455 40516 38967 37881 37797 36097 33544 08/31/08 am 31136 29247 27960 27102 26553 26427 26044 26371 28506 31119 33446 35718 pm 37631 39169 40177 41111 41743 41992 41300 40046 39262 39160 37396 34777 09/01/08 am 32200 30236 28919 27959 27398 27233 26904 27247 29403 32115 34643 37161 pm 39335 41085 42201 43153 43798 44103 43317 41979 41133 40917 38950 36171 09/02/08 am 33684 31746 30377 29569 29413 30317 32357 34441 37406 40420 43631 46439 pm 49082 51144 52792 53600 54169 53851 52629 50597 48948 48013 45048 41128 DOMINION HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----++-----+ 08/27/08 am 8604 8540 8225 7912 8084 8882 9866 10230 10644 11001 11545 11913 pm 12211 12000 12238 11906 11665 11675 11651 11697 11663 10966 10225 9625 08/28/08 am 8961 8442 8118 7993 8083 8614 9485 10090 10581 11020 11554 11989 pm 12339 12665 12876 13045 13181 13152 12871 12503 12450 11920 10886 9804 08/29/08 am 8934 8447 8161 8039 8158 8690 9547 10276 10889 11456 12042 12561 pm 12956 13332 13576 13794 13991 14047 13755 13120 12925 12448 11541 10550 08/30/08 am 9682 9048 8615 8364 8278 8368 8513 9117 10258 11407 12453 13324 pm 13959 14383 14662 14849 14946 14770 14201 13417 13248 12717 11776 10772 08/31/08 am 9853 9135 8631 8293 8127 8084 8066 8487 9576 10722 11701 12548 pm 13266 13828 14193 14446 14591 14515 13957 13179 12995 12368 11314 10197 09/01/08 am 9360 8665 8195 7876 7733 7726 7782 8188 9179 10216 11092 11855 pm 12510 13022 13347 13581 13746 13691 13210 12590 12392 11769 10760 9698 09/02/08 am 8898 8291 7923 7718 7758 8165 8806 9405 10144 10936 11785 12574 pm 13239 13901 14386 14775 15022 14889 14178 13411 13143 12424 11218 9995 SOUTHERN REGION HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++------++------++------++------++------++------++------++------++------++------++------++------+ 08/27/08 am 8604 8540 8225 7912 8084 8882 9866 10230 10644 11001 11545 11913 pm 12211 12000 12238 11906 11665 11675 11651 11697 11663 10966 10225 9625 08/28/08 am 8961 8442 8118 7993 8083 8614 9485 10090 10581 11020 11554 11989 pm 12339 12665 12876 13045 13181 13152 12871 12503 12450 11920 10886 9804 08/29/08 am 8934 8447 8161 8039 8158 8690 9547 10276 10889 11456 12042 12561 pm 12956 13332 13576 13794 13991 14047 13755 13120 12925 12448 11541 10550 08/30/08 am 9682 9048 8615 8364 8278 8368 8513 9117 10258 11407 12453 13324 pm 13959 14383 14662 14849 14946 14770 14201 13417 13248 12717 11776 10772 08/31/08 am 9853 9135 8631 8293 8127 8084 8066 8487 9576 10722 11701 12548 pm 13266 13828 14193 14446 14591 14515 13957 13179 12995 12368 11314 10197 09/01/08 am 9360 8665 8195 7876 7733 7726 7782 8188 9179 10216 11092 11855 pm 12510 13022 13347 13581 13746 13691 13210 12590 12392 11769 10760 9698 09/02/08 am 8898 8291 7923 7718 7758 8165 8806 9405 10144 10936 11785 12574 pm 13239 13901 14386 14775 15022 14889 14178 13411 13143 12424 11218 9995 RTO COMBINED HOUR ENDING INTEGRATED FORECAST LOAD MW Date 1 2 3 4 5 6 7 8 9 10 11 12 +-----------++------++------++------++------++------++------++------++------++------++------++------++------+ 08/27/08 am 69467 66250 64128 62460 62892 67797 73333 78611 82308 85448 88665 90361 pm 92330 93055 94184 94354 94350 93689 91626 89930 89246 87080 81136 74886 08/28/08 am 70001 66076 63567 62249 62608 65940 72141 77175 80975 84386 87951 90893 pm 93127 95209 96630 97415 97895 97430 95236 92775 92330 90227 83772 76436 08/29/08 am 70143 66161 63615 62153 62487 65259 70174 75524 80464 84710 88628 91639 pm 93738 95444 96538 96943 96936 96042 92864 88690 87480 86168 80913 74693 08/30/08 am 69097 64878 62096 60304 59586 59918 60116 63154 69693 76369 82103 86643 pm 89683 91863 93301 94364 95227 94539 92050 88206 87071 85861 81253 75328 08/31/08 am 69742 65290 62327 60261 59182 58786 58119 59976 65782 72348 77980 82985 pm 87034 90219 92303 93926 95186 95135 92835 89742 89013 87164 81983 75779 09/01/08 am 70464 65945 62937 60739 59664 59239 58758 60538 66141 72566 78172 83154 pm 87325 90525 92627 94084 95297 95409 93120 90168 89267 87178 81868 75682 09/02/08 am 70401 66285 63468 61951 62095 64535 68969 73961 80202 86470 92675 97941 pm 102741 106670 109609 111383 112457 111292 107473 103122 101151 97792 90613 82482