18-Month Outlook Update - Tables
May 25th, 2009
IESO_REP_0549v1.0
Executive Summary
Table 1: Peak Demand by Season
3.0 Demand Forecast
Table 3.1: Forecast Summary
Table 3.1.1: Monthly Peak and Energy Demand
Table 3.1.2: Weekly Coincident Peak Demand by Zone
Table 3.1.3: Weekly Energy Demand by Zone
Table 3.2: Weekly Energy and Peak Demand
Table 3.3.1: Weekly Weather and Demand History
Table 3.3.2: Monthly Weather and Demand History
Table 3.3.3: Monthly Consumption by Market Participant Type
Table 3.3.4: Economic Assumptions
Table 3.3.5: Weather Scenarios
4.0 Resource Adequacy Assessment
Table 4.1: Existing Installed Generation Resources
Table 4.2: Committed and Contracted Generation Resources
Table 4.3: Summary of Scenario Assumptions
Table 4.4: Summary of Available Resources
Appendix A Resource Adequacy Assessment Details
Table A1: Assessment of Resource Adequacy: Normal Weather, Firm Scenario
Table A2: Assessment of Resource Adequacy: Normal Weather, Planned Scenario
Table A3: Zonal Bottled Generation: Normal Weather, Both Scenarios
Table A4: Assessment of Resource Adequacy: Extreme Weather, Firm Scenario
Table A5: Assessment of Resource Adequacy: Extreme Weather, Planned Scenario
Table A6: Zonal Bottled Generation: Extreme Weather, Both Scenarios
Table A7: Energy Production Capability Forecast
Appendix B Transmission Projects
Table B1: Transmission Projects
Appendix C Transmission Outages
Table C1: Bruce Zone
Table C2: East Zone
Table C3: Essa Zone
Table C4: Niagara Zone
Table C5: Northeast Zone
Table C6: Northwest Zone
Table C7: Ottawa Zone
Table C8: Southwest Zone
Table C9: Toronto Zone
Table C10: West Zone
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Table 1: Peak Demand By Season IESO_REP_0549v1.0 May 25, 2009
Normal Weather Peak Extreme Weather Peak
Season
(MW) (MW)
Summer 2009 24,351 26,454
Winter 2009-10 22,886 24,046
Summer 2010 24,160 26,348
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Table 3.1 Forecast Summary IESO_REP_0549v1.0 May 25, 2009
Season Normal Weather Peak (MW) Extreme Weather Peak (MW)
Summer 2009 24,351 26,454
Winter 2009-10 22,886 24,046
Summer 2010 24,160 26,348
Year Normal Weather Energy (TWh) % Growth in Energy
2006 Energy 152.3 -1.9%
2007 Energy 151.6 -0.5%
2008 Energy 148.9 -1.8%
2009 Energy (Forecast) 142.9 -4.0%
2010 Energy (Forecast) 142.5 -0.3%
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Table 3.1.1: Monthly Peak and Energy Demand IESO_REP_0549v1.0 May 25, 2009
Forecasted Peak and Energy Demand
Peak Demand (MW) Energy Demand (GWh)
Month Current Forecast Previous Forecast Weather Corrected Actual Current Forecast Previous Forecast Weather Corrected Actual
Jan-09 22,901 23,813 22,901 13,409 13,409 13,409
Feb-09 22,217 23,221 22,217 11,833 11,833 11,833
Mar-09 20,885 21,898 20,885 12,142 12,747 12,142
Apr-09 19,717 20,075 19,717 10,846 11,355 10,846
May-09 20,358 20,358 11,202 11,416
Jun-09 23,173 24,058 11,588 11,892
Jul-09 24,351 24,998 12,626 12,928
Aug-09 23,670 24,192 12,370 12,663
Sep-09 21,388 22,071 11,148 11,409
Oct-09 19,980 21,098 11,457 11,816
Nov-09 21,106 21,814 11,720 12,155
Dec-09 21,883 22,758 12,572 12,991
2009 24,351 24,998 22,901 142,912 146,613 48,230
Jan-10 22,886 22,528 13,217 12,978
Feb-10 22,632 22,331 11,898 11,724
Mar-10 21,536 21,110 12,530 12,465
Apr-10 19,029 19,266 10,935 11,115
May-10 19,399 19,732 10,955 11,157
Jun-10 22,959 23,447 11,392 11,744
Jul-10 24,160 24,501 12,498 12,760
Aug-10 23,462 23,775 12,309 12,612
Sep-10 22,146 22,306 11,195 11,342
Oct-10 19,611 19,642 11,338 11,468
Nov-10 21,063 21,211 11,650 11,778
Dec-10 22,388 22,319 12,587 12,491
2010 24,160 24,501 142,504 143,634
Note: Current Forecast includes year to date weather corrected actuals or the most recent forecast for the month. Previous Forecast includes the last forecast
for months with a reported actual and the previous forecast for the remaining months.
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Table 3.1.2: Weekly Coincident Peak Demand by Zone IESO_REP_0549v1.0 May 25, 2009
Hourly Coincident Peak Demand (MW)
Week Ending Load Forecast
Bruce East Essa Niagara NorthEast NorthWest Ottawa SouthWest Toronto West Ontario
Uncertainty
7-Jun-09 50 1,214 1,176 649 1,268 566 1,504 3,883 7,666 2,095 20,071 1,244
14-Jun-09 60 1,316 1,299 799 1,257 561 1,620 4,327 8,577 2,575 22,391 1,052
21-Jun-09 64 1,375 1,363 824 1,261 570 1,695 4,452 8,895 2,674 23,173 1,253
28-Jun-09 66 1,329 1,316 841 1,208 555 1,640 4,436 8,922 2,585 22,897 1,319
5-Jul-09 75 1,312 1,299 795 1,226 519 1,568 4,256 8,384 2,455 21,891 879
12-Jul-09 65 1,405 1,406 846 1,239 547 1,768 4,573 9,328 2,625 23,802 1,013
19-Jul-09 62 1,440 1,471 913 1,257 552 1,833 4,643 9,353 2,827 24,351 1,206
26-Jul-09 59 1,379 1,393 892 1,221 567 1,706 4,483 9,063 2,778 23,542 978
2-Aug-09 58 1,340 1,358 785 1,254 557 1,655 4,389 8,849 2,460 22,705 828
9-Aug-09 62 1,394 1,410 882 1,261 584 1,765 4,556 9,028 2,727 23,670 1,005
16-Aug-09 63 1,389 1,401 867 1,366 572 1,803 4,426 8,772 2,715 23,375 982
23-Aug-09 63 1,322 1,326 830 1,349 576 1,710 4,314 8,431 2,598 22,520 794
30-Aug-09 64 1,343 1,325 841 1,393 574 1,721 4,386 8,646 2,614 22,907 692
6-Sep-09 62 1,204 1,167 808 1,348 538 1,478 4,149 8,119 2,515 21,388 1,401
13-Sep-09 61 1,115 1,066 790 1,327 531 1,415 4,034 7,849 2,497 20,686 1,422
20-Sep-09 60 1,019 947 771 1,248 519 1,313 3,961 7,650 2,430 19,919 1,206
27-Sep-09 55 1,075 985 706 1,296 543 1,484 3,669 7,140 2,221 19,173 864
4-Oct-09 64 1,153 1,033 645 1,356 525 1,562 3,710 6,656 2,028 18,733 611
11-Oct-09 60 1,188 1,084 596 1,390 484 1,573 3,815 6,567 1,884 18,640 511
18-Oct-09 59 1,239 1,128 604 1,401 539 1,601 3,841 6,651 1,914 18,977 551
25-Oct-09 63 1,301 1,195 615 1,487 526 1,662 3,907 6,712 1,944 19,411 730
1-Nov-09 63 1,350 1,228 628 1,491 544 1,661 4,049 7,004 1,962 19,980 793
8-Nov-09 69 1,329 1,182 619 1,504 588 1,640 4,093 7,184 1,990 20,200 620
15-Nov-09 72 1,436 1,317 656 1,466 566 1,751 4,164 7,240 2,027 20,695 662
22-Nov-09 74 1,456 1,304 654 1,539 583 1,771 4,195 7,410 2,075 21,060 852
29-Nov-09 69 1,488 1,354 690 1,530 586 1,797 4,216 7,260 2,116 21,106 450
6-Dec-09 71 1,516 1,341 670 1,668 624 1,809 4,235 7,514 2,126 21,575 696
13-Dec-09 84 1,554 1,399 662 1,641 617 1,846 4,342 7,610 2,127 21,883 596
20-Dec-09 77 1,551 1,381 671 1,680 604 1,831 4,322 7,589 2,104 21,808 553
27-Dec-09 86 1,563 1,418 632 1,605 536 1,906 4,129 7,251 2,036 21,162 474
3-Jan-10 97 1,598 1,486 644 1,723 551 1,906 4,197 7,218 2,069 21,487 381
10-Jan-10 84 1,679 1,481 687 1,684 685 1,938 4,424 7,525 2,198 22,383 352
17-Jan-10 84 1,715 1,509 713 1,649 661 1,939 4,488 7,503 2,249 22,510 599
24-Jan-10 92 1,770 1,579 715 1,569 654 1,992 4,585 7,675 2,257 22,886 580
31-Jan-10 86 1,732 1,552 730 1,719 674 1,938 4,506 7,537 2,254 22,727 445
7-Feb-10 87 1,716 1,529 729 1,606 638 1,933 4,531 7,592 2,270 22,632 422
14-Feb-10 78 1,687 1,511 680 1,636 635 1,931 4,414 7,433 2,145 22,149 554
21-Feb-10 80 1,640 1,456 699 1,600 659 1,880 4,412 7,433 2,208 22,066 455
28-Feb-10 77 1,561 1,387 687 1,537 630 1,838 4,335 7,327 2,184 21,564 509
7-Mar-10 77 1,622 1,521 669 1,492 581 1,893 4,292 7,283 2,104 21,536 386
14-Mar-10 72 1,501 1,405 657 1,503 587 1,745 4,198 7,138 2,079 20,886 780
Table 3.1.2: Weekly Coincident Peak Demand by Zone IESO_REP_0549v1.0 May 25, 2009
Hourly Coincident Peak Demand (MW)
Week Ending Load Forecast
Bruce East Essa Niagara NorthEast NorthWest Ottawa SouthWest Toronto West Ontario
Uncertainty
21-Mar-10 79 1,463 1,355 626 1,519 583 1,840 4,097 6,905 2,019 20,486 762
28-Mar-10 76 1,396 1,289 606 1,468 565 1,739 4,030 6,842 1,985 19,996 793
4-Apr-10 75 1,340 1,229 618 1,461 549 1,708 3,935 6,674 2,006 19,595 760
11-Apr-10 72 1,311 1,225 594 1,398 525 1,633 3,833 6,505 1,933 19,029 862
18-Apr-10 66 1,236 1,144 582 1,351 510 1,564 3,806 6,360 1,938 18,557 589
25-Apr-10 64 1,255 1,182 558 1,398 516 1,569 3,781 6,346 1,869 18,538 583
2-May-10 55 1,151 1,125 569 1,356 539 1,276 3,668 6,348 1,844 17,932 869
9-May-10 59 1,165 1,170 571 1,296 548 1,297 3,724 6,397 1,863 18,089 751
16-May-10 45 1,203 1,179 603 1,212 549 1,416 3,718 6,811 1,892 18,628 471
23-May-10 45 1,093 1,052 638 1,202 508 1,255 3,786 7,410 2,068 19,056 1,009
30-May-10 48 1,189 1,162 637 1,262 538 1,412 3,758 7,314 2,079 19,399 1,389
6-Jun-10 50 1,199 1,169 676 1,232 542 1,424 4,020 7,668 2,226 20,207 922
13-Jun-10 53 1,264 1,250 655 1,205 557 1,531 4,074 7,696 2,146 20,431 1,306
20-Jun-10 60 1,309 1,290 781 1,193 567 1,555 4,387 8,487 2,495 22,122 1,129
27-Jun-10 61 1,379 1,368 845 1,189 557 1,661 4,492 8,811 2,595 22,959 1,171
4-Jul-10 73 1,321 1,300 816 1,148 505 1,538 4,453 8,611 2,510 22,275 1,403
11-Jul-10 62 1,360 1,349 871 1,168 560 1,682 4,534 8,700 2,686 22,974 871
18-Jul-10 61 1,416 1,427 812 1,196 562 1,719 4,638 9,164 2,557 23,553 1,094
25-Jul-10 58 1,458 1,498 896 1,219 564 1,797 4,692 9,184 2,793 24,160 1,278
1-Aug-10 59 1,399 1,419 878 1,178 583 1,677 4,560 8,936 2,753 23,442 921
8-Aug-10 61 1,351 1,366 825 1,218 571 1,659 4,495 8,525 2,610 22,680 987
15-Aug-10 62 1,414 1,425 856 1,241 594 1,745 4,598 8,855 2,672 23,462 1,007
22-Aug-10 62 1,409 1,409 856 1,354 586 1,774 4,491 8,657 2,681 23,279 976
29-Aug-10 61 1,329 1,327 811 1,324 577 1,656 4,356 8,276 2,537 22,255 812
5-Sep-10 60 1,308 1,272 834 1,333 552 1,628 4,293 8,263 2,604 22,146 1,163
12-Sep-10 61 1,221 1,172 797 1,301 548 1,467 4,203 8,032 2,479 21,281 1,313
19-Sep-10 57 1,125 1,064 774 1,273 531 1,402 4,080 7,753 2,441 20,499 1,417
26-Sep-10 58 1,030 955 754 1,183 517 1,297 4,012 7,545 2,380 19,729 1,165
3-Oct-10 55 1,213 1,064 706 1,259 540 1,588 3,717 6,726 2,239 19,107 816
10-Oct-10 61 1,206 1,065 633 1,332 539 1,545 3,745 6,481 1,994 18,600 569
17-Oct-10 61 1,249 1,130 588 1,393 499 1,577 3,904 6,509 1,886 18,795 610
24-Oct-10 63 1,303 1,179 599 1,405 569 1,604 3,950 6,590 1,939 19,201 546
31-Oct-10 65 1,367 1,249 608 1,486 546 1,666 4,012 6,655 1,956 19,611 682
7-Nov-10 62 1,402 1,263 609 1,472 531 1,654 4,092 6,885 1,931 19,899 825
14-Nov-10 71 1,359 1,206 611 1,499 605 1,646 4,166 7,110 1,980 20,251 612
21-Nov-10 70 1,476 1,332 651 1,475 579 1,753 4,261 7,090 2,050 20,737 699
28-Nov-10 72 1,485 1,328 641 1,529 583 1,772 4,253 7,336 2,031 21,029 889
5-Dec-10 72 1,471 1,319 671 1,592 624 1,760 4,270 7,315 2,136 21,230 793
12-Dec-10 87 1,623 1,475 717 1,612 656 1,855 4,450 7,396 2,238 22,110 595
19-Dec-10 86 1,647 1,474 681 1,628 633 1,929 4,476 7,653 2,181 22,388 356
26-Dec-10 83 1,491 1,350 616 1,626 574 1,795 4,129 7,079 2,037 20,781 519
2-Jan-11 97 1,611 1,511 630 1,696 574 1,895 4,254 7,114 2,054 21,437 438
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Table 3.1.3: Weekly Energy Demand by Zone IESO_REP_0549v1.0 May 25, 2009
Weeky Normal Energy (GWh)
Week Ending
Bruce East Essa Niagara NorthEast NorthWest Ottawa SouthWest Toronto West Ontario
7-Jun-09 8 159 153 91 195 83 197 505 905 289 2,585
14-Jun-09 8 162 156 95 193 84 202 526 951 305 2,682
21-Jun-09 8 166 160 100 190 85 207 525 971 317 2,729
28-Jun-09 9 169 163 102 189 83 211 533 998 310 2,767
5-Jul-09 9 168 163 101 189 76 209 530 988 313 2,747
12-Jul-09 8 171 164 102 190 82 216 540 1,022 310 2,805
19-Jul-09 8 178 174 108 190 82 224 558 1,068 331 2,921
26-Jul-09 8 173 171 106 190 82 217 544 1,026 329 2,845
2-Aug-09 8 172 170 103 190 82 216 549 1,034 319 2,844
9-Aug-09 8 171 167 105 195 84 217 544 1,014 325 2,831
16-Aug-09 8 171 167 108 200 84 219 547 1,014 333 2,850
23-Aug-09 8 166 162 104 204 85 216 537 985 322 2,788
30-Aug-09 8 168 163 103 211 84 218 541 989 318 2,804
6-Sep-09 8 157 152 100 208 82 199 516 945 307 2,676
13-Sep-09 8 151 143 92 208 79 197 504 894 288 2,564
20-Sep-09 9 149 140 94 206 81 199 514 911 295 2,596
27-Sep-09 8 150 139 89 205 82 205 506 887 279 2,550
4-Oct-09 8 152 142 85 210 82 204 512 880 268 2,543
11-Oct-09 8 155 146 85 211 82 202 512 884 265 2,551
18-Oct-09 8 158 151 83 216 86 202 508 863 260 2,535
25-Oct-09 8 166 160 87 224 87 210 532 899 270 2,643
1-Nov-09 8 170 165 86 229 88 210 535 909 269 2,668
8-Nov-09 8 173 162 86 226 91 217 536 911 271 2,682
15-Nov-09 9 177 166 88 228 91 218 548 932 279 2,737
22-Nov-09 9 182 170 88 230 91 221 553 945 279 2,768
29-Nov-09 9 185 173 90 233 93 222 555 949 282 2,791
6-Dec-09 10 193 179 91 236 91 227 564 967 290 2,848
13-Dec-09 10 195 182 90 238 90 230 562 961 284 2,841
20-Dec-09 10 196 183 91 237 88 230 567 970 289 2,861
27-Dec-09 10 193 184 83 236 80 233 538 918 277 2,752
3-Jan-10 11 205 195 87 242 92 236 560 938 285 2,851
10-Jan-10 11 215 197 93 244 103 243 588 975 298 2,968
17-Jan-10 11 218 199 94 247 105 247 596 988 302 3,007
24-Jan-10 11 224 204 96 245 108 250 608 1,009 305 3,060
31-Jan-10 11 217 199 95 246 108 243 599 989 301 3,008
7-Feb-10 10 218 200 95 241 107 244 602 994 302 3,012
14-Feb-10 10 216 200 94 243 104 241 600 989 299 2,997
21-Feb-10 10 212 196 95 239 103 237 597 988 300 2,977
28-Feb-10 10 203 190 93 237 103 228 584 967 298 2,913
7-Mar-10 10 206 192 93 236 101 233 579 961 295 2,905
14-Mar-10 10 198 186 92 232 100 223 573 951 293 2,858
Table 3.1.3: Weekly Energy Demand by Zone IESO_REP_0549v1.0 May 25, 2009
Weeky Normal Energy (GWh)
Week Ending
Bruce East Essa Niagara NorthEast NorthWest Ottawa SouthWest Toronto West Ontario
21-Mar-10 10 196 181 89 229 95 229 562 932 287 2,809
28-Mar-10 10 187 175 88 223 94 220 552 918 282 2,749
4-Apr-10 9 175 162 84 219 90 207 525 868 268 2,607
11-Apr-10 9 172 165 84 218 87 202 526 873 266 2,602
18-Apr-10 8 167 163 83 213 86 196 519 857 265 2,559
25-Apr-10 8 166 164 82 206 85 195 514 851 260 2,532
2-May-10 8 160 159 82 201 85 188 508 840 258 2,490
9-May-10 7 159 159 81 196 87 189 509 846 259 2,493
16-May-10 7 161 160 81 194 84 191 503 847 258 2,487
23-May-10 7 159 157 82 195 84 189 505 863 262 2,503
30-May-10 7 159 155 82 193 84 188 490 839 259 2,458
6-Jun-10 7 163 156 88 188 85 195 513 890 281 2,567
13-Jun-10 8 160 153 88 184 87 194 511 886 285 2,556
20-Jun-10 8 166 160 95 182 87 198 527 945 304 2,672
27-Jun-10 8 172 166 96 182 87 208 534 964 295 2,714
4-Jul-10 9 168 163 98 180 80 200 531 967 300 2,694
11-Jul-10 8 176 170 102 182 86 213 548 1,013 310 2,810
18-Jul-10 8 176 171 102 182 86 212 549 1,008 311 2,803
25-Jul-10 8 184 181 107 185 87 225 567 1,045 332 2,920
1-Aug-10 8 180 177 102 183 87 220 559 1,019 319 2,854
8-Aug-10 8 175 170 99 186 87 213 547 995 307 2,786
15-Aug-10 8 176 171 105 191 88 217 549 991 325 2,822
22-Aug-10 8 174 169 103 198 88 218 547 977 319 2,801
29-Aug-10 8 170 164 102 201 87 209 535 956 314 2,746
5-Sep-10 8 168 162 100 206 88 207 541 952 305 2,738
12-Sep-10 7 160 151 96 199 81 197 510 911 296 2,610
19-Sep-10 8 156 146 92 200 85 198 518 899 285 2,587
26-Sep-10 8 153 142 91 198 83 198 517 895 286 2,570
3-Oct-10 8 154 142 87 198 84 203 507 868 268 2,518
10-Oct-10 8 159 149 83 207 86 203 518 869 263 2,544
17-Oct-10 8 161 153 81 211 87 199 510 856 256 2,521
24-Oct-10 8 166 160 85 215 91 204 531 881 265 2,606
31-Oct-10 8 172 168 85 223 91 210 543 893 267 2,660
7-Nov-10 8 174 171 83 225 88 208 539 896 261 2,653
14-Nov-10 9 176 166 85 221 92 217 544 902 269 2,680
21-Nov-10 9 181 172 87 224 92 217 555 922 274 2,732
28-Nov-10 9 186 175 86 226 92 220 560 935 275 2,765
5-Dec-10 10 190 179 88 230 95 222 565 943 282 2,805
12-Dec-10 10 200 188 91 236 97 231 576 963 292 2,886
19-Dec-10 10 203 189 91 234 94 233 581 970 289 2,895
26-Dec-10 11 198 189 81 236 86 235 554 923 271 2,784
2-Jan-11 8 149 148 60 167 62 173 403 667 200 2,037
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Table 3.2: Weekly Energy and Peak Demand IESO_REP_0549v1.0 May 25, 2009
Load Normal Load Normal
Week Normal Extreme Forecast Energy Week Normal Extreme Forecast Energy
Ending Peak (MW) Peak (MW) Uncertainty Demand Ending Peak (MW) Peak (MW) Uncertainty Demand
(MW) (GWh) (MW) (MWh)
7-Jun-09 20,071 23,604 1,244 2,585 21-Mar-10 20,486 22,340 662 2,737
14-Jun-09 22,391 24,678 1,052 2,682 28-Mar-10 19,996 21,819 852 2,768
21-Jun-09 23,173 25,640 1,253 2,729 4-Apr-10 19,595 21,199 450 2,791
28-Jun-09 22,897 25,457 1,319 2,767 11-Apr-10 19,029 20,532 696 2,848
5-Jul-09 21,891 24,012 879 2,747 18-Apr-10 18,557 20,127 596 2,841
12-Jul-09 23,802 25,580 1,013 2,805 25-Apr-10 18,538 21,954 553 2,861
19-Jul-09 24,351 26,454 1,206 2,921 2-May-10 17,932 21,939 474 2,752
26-Jul-09 23,542 25,664 978 2,845 9-May-10 18,089 21,697 381 2,851
2-Aug-09 22,705 24,408 828 2,844 16-May-10 18,628 22,254 352 2,968
9-Aug-09 23,670 26,409 1,005 2,831 23-May-10 19,056 21,979 599 3,007
16-Aug-09 23,375 25,839 982 2,850 30-May-10 19,399 22,733 580 3,060
23-Aug-09 22,520 25,002 794 2,788 6-Jun-10 20,207 24,555 445 3,008
30-Aug-09 22,907 25,194 692 2,804 13-Jun-10 20,431 23,419 422 3,012
6-Sep-09 21,388 25,362 1,401 2,676 20-Jun-10 22,122 24,483 554 2,997
13-Sep-09 20,686 25,154 1,422 2,564 27-Jun-10 22,959 25,337 455 2,977
20-Sep-09 19,919 24,411 1,206 2,596 4-Jul-10 22,275 24,811 509 2,913
27-Sep-09 19,173 23,016 864 2,550 11-Jul-10 22,974 24,675 386 2,905
4-Oct-09 18,733 23,064 611 2,543 18-Jul-10 23,553 25,404 780 2,858
11-Oct-09 18,640 19,885 511 2,551 25-Jul-10 24,160 26,348 762 2,809
18-Oct-09 18,977 20,130 551 2,535 1-Aug-10 23,442 25,492 793 2,749
25-Oct-09 19,411 20,390 730 2,643 8-Aug-10 22,680 25,507 760 2,607
1-Nov-09 19,980 20,854 793 2,668 15-Aug-10 23,462 26,300 862 2,602
8-Nov-09 20,200 21,183 620 2,682 22-Aug-10 23,279 25,727 589 2,559
15-Nov-09 20,695 21,924 662 2,737 29-Aug-10 22,255 24,850 583 2,532
22-Nov-09 21,060 22,471 852 2,768 5-Sep-10 22,146 24,864 869 2,490
29-Nov-09 21,106 22,932 450 2,791 12-Sep-10 21,281 25,267 751 2,493
6-Dec-09 21,575 23,093 696 2,848 19-Sep-10 20,499 25,020 471 2,487
13-Dec-09 21,883 23,190 596 2,841 26-Sep-10 19,729 24,279 1,009 2,503
20-Dec-09 21,808 22,968 553 2,861 3-Oct-10 19,107 22,902 1,389 2,458
27-Dec-09 21,162 22,251 474 2,752 10-Oct-10 18,600 22,893 922 2,567
3-Jan-10 21,487 22,732 381 2,851 17-Oct-10 18,795 19,868 1,306 2,556
10-Jan-10 22,383 23,353 352 2,968 24-Oct-10 19,201 20,347 1,129 2,672
17-Jan-10 22,510 23,692 599 3,007 31-Oct-10 19,611 20,575 1,171 2,714
24-Jan-10 22,886 24,046 580 3,060 7-Nov-10 19,899 20,829 1,403 2,694
31-Jan-10 22,727 23,978 445 3,008 14-Nov-10 20,251 21,225 871 2,810
7-Feb-10 22,632 23,865 422 3,012 21-Nov-10 20,737 22,027 1,094 2,803
14-Feb-10 22,149 23,429 554 2,997 28-Nov-10 21,029 22,478 1,278 2,920
21-Feb-10 22,066 23,175 455 2,977 5-Dec-10 21,230 23,006 921 2,854
28-Feb-10 21,564 22,831 509 2,913 12-Dec-10 22,110 23,535 987 2,786
7-Mar-10 21,536 22,375 386 2,905 19-Dec-10 22,388 23,606 1,007 2,822
14-Mar-10 20,886 22,727 780 2,858 26-Dec-10 20,781 22,071 976 2,801
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Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
18 5-May-02 2,701 9.5 10.8 Thu-May-2 18,887 8.7 7.1
19 12-May-02 2,670 12.4 13.3 Thu-May-9 18,580 22.7 11.4
20 19-May-02 2,680 9.2 13.8 Mon-May-13 18,905 8.5 8.7
21 26-May-02 2,598 11.7 15.6 Fri-May-24 18,290 18.9 24.8 Victoria Day
22 2-Jun-02 2,746 19.9 17.5 Thu-May-30 20,068 27.9 23.5
23 9-Jun-02 2,686 16.7 18.1 Wed-Jun-5 18,724 23.2 25.5
24 16-Jun-02 2,784 18.4 20.9 Tue-Jun-11 22,160 31.2 30.6
25 23-Jun-02 2,890 21.5 20.6 Fri-Jun-21 22,272 29.8 29.3
26 30-Jun-02 3,113 24.5 21.7 Wed-Jun-26 23,578 30.7 31.3
27 7-Jul-02 3,189 27.2 22.6 Wed-Jul-3 25,226 34.7 29.2 Canada Day
28 14-Jul-02 2,998 24.0 22.2 Mon-Jul-8 23,405 32.8 29.6
29 21-Jul-02 3,269 26.3 24.2 Wed-Jul-17 25,001 34.4 30.2
30 28-Jul-02 3,079 23.6 22.8 Mon-Jul-22 24,613 33.5 30.9
31 4-Aug-02 3,348 27.3 22.1 Thu-Aug-1 25,343 34.6 27.0
32 11-Aug-02 2,946 22.8 21.4 Sun-Aug-11 21,621 32.8 30.8 Civic Holiday
33 18-Aug-02 3,438 27.5 20.2 Tue-Aug-13 25,414 33.4 28.9
34 25-Aug-02 2,949 21.3 20.4 Wed-Aug-21 21,331 25.8 23.3
35 1-Sep-02 2,952 22.1 18.5 Mon-Aug-26 21,992 29.8 27.5
36 8-Sep-02 3,017 23.8 20.3 Tue-Sep-3 23,194 31.3 26.1 Labour Day
37 15-Sep-02 3,050 23.3 16.8 Mon-Sep-9 25,062 33.5 29.6 All-Time September Peak
38 22-Sep-02 2,986 22.1 17.3 Fri-Sep-20 22,445 29.2 26.8
39 29-Sep-02 2,742 16.1 15.4 Thu-Sep-26 19,030 21.9 19.5
40 6-Oct-02 2,812 19.3 11.6 Tue-Oct-1 21,216 28.8 9.5 All-Time October Peak
41 13-Oct-02 2,715 12.7 12.4 Thu-Oct-10 19,140 17.9 9.5
42 20-Oct-02 2,725 8.1 9.9 Wed-Oct-16 19,531 10.4 9.8 Thanksgiving
43 27-Oct-02 2,856 5.1 7.7 Thu-Oct-24 19,904 5.2 5.6
44 3-Nov-02 2,921 2.5 7.5 Tue-Oct-29 20,339 4.1 4.0
45 10-Nov-02 2,898 7.7 7.6 Tue-Nov-5 21,071 5.0 3.8
46 17-Nov-02 2,935 3.7 4.2 Wed-Nov-13 20,619 8.2 1.0 Remembrance Day
47 24-Nov-02 2,960 4.0 2.3 Mon-Nov-18 21,259 2.8 -2.0
48 1-Dec-02 3,066 -0.9 1.7 Thu-Nov-28 21,862 0.1 -2.0
49 8-Dec-02 3,219 -4.6 -0.5 Mon-Dec-2 23,070 -7.9 -8.4
50 15-Dec-02 3,142 0.8 -0.5 Mon-Dec-9 23,334 -1.2 -1.1
51 22-Dec-02 3,128 -0.8 -2.2 Mon-Dec-16 23,172 -7.1 -7.4
52 29-Dec-02 2,768 -1.3 -3.4 Mon-Dec-23 20,993 0.1 -4.3 Christmas & Boxing Day
1 5-Jan-03 2,911 -1.2 -2.9 Thu-Jan-2 22,092 -6.1 -5.5 New Years Day
2 12-Jan-03 3,163 -3.1 -4.4 Tue-Jan-7 22,435 -1.3 -8.8
3 19-Jan-03 3,338 -8.9 -7.0 Wed-Jan-15 23,013 -5.6 -13.5
4 26-Jan-03 3,435 -11.9 -4.4 Wed-Jan-22 24,158 -13.4 -13.0
5 2-Feb-03 3,270 -5.4 -4.8 Mon-Jan-27 23,916 -11.4 -8.7
6 9-Feb-03 3,250 -4.9 -5.7 Wed-Feb-5 22,839 -6.9 -13.5
7 16-Feb-03 3,437 -11.3 -4.9 Thu-Feb-13 23,469 -10.0 -8.7 All-Time February Peak
8 23-Feb-03 3,207 -2.0 -1.5 Mon-Feb-17 23,290 -7.1 -7.5
9 2-Mar-03 3,254 -7.5 -3.0 Mon-Feb-24 22,831 -8.5 -8.0
10 9-Mar-03 3,249 -6.9 -1.4 Mon-Mar-3 23,117 -14.3 -5.5 All-Time March Peak
11 16-Mar-03 3,113 -3.2 0.5 Mon-Mar-10 22,599 -11.2 -2.4
12 23-Mar-03 2,907 6.0 1.4 Thu-Mar-20 20,417 6.9 -1.5
13 30-Mar-03 2,851 7.2 4.4 Mon-Mar-24 19,675 11.4 2.5
14 6-Apr-03 3,058 -1.1 4.6 Thu-Apr-3 21,010 -1.8 0.2 All-Time April Peak
15 13-Apr-03 2,903 3.1 6.5 Mon-Apr-7 20,921 -2.0 5.0
16 20-Apr-03 2,688 11.5 8.1 Thu-Apr-17 19,555 2.7 3.4 Good Friday
17 27-Apr-03 2,718 9.3 9.4 Tue-Apr-22 19,075 7.1 6.0 Easter Monday
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
18 4-May-03 2,656 12.3 10.8 Thu-May-1 18,191 19.0 7.1
19 11-May-03 2,659 13.5 13.3 Mon-May-5 18,741 13.1 11.4
20 18-May-03 2,625 11.8 13.8 Mon-May-12 18,362 11.1 8.7
21 25-May-03 2,562 13.5 15.6 Tue-May-20 18,599 15.7 24.8 Victoria Day
22 1-Jun-03 2,638 15.1 17.5 Thu-May-29 18,226 24.2 23.5
23 8-Jun-03 2,654 16.2 18.1 Wed-Jun-4 18,410 16.1 25.5
24 15-Jun-03 2,676 18.0 20.9 Wed-Jun-11 19,042 24.6 30.6
25 22-Jun-03 2,749 19.4 20.6 Wed-Jun-18 19,935 22.6 29.3
26 29-Jun-03 3,088 25.9 21.7 Thu-Jun-26 24,753 33.3 31.3
27 6-Jul-03 2,993 25.4 22.6 Fri-Jul-4 23,175 31.3 29.2 Canada Day
28 13-Jul-03 2,846 21.6 22.2 Tue-Jul-8 22,137 28.6 29.6
29 20-Jul-03 2,843 21.3 24.2 Mon-Jul-14 21,149 28.0 30.2
30 27-Jul-03 2,883 22.6 22.8 Fri-Jul-25 20,937 28.7 30.9
31 3-Aug-03 2,893 22.4 22.1 Wed-Jul-30 21,438 28.3 27.0
32 10-Aug-03 3,015 23.3 21.4 Thu-Aug-7 22,380 26.9 30.8 Civic Holiday
33 17-Aug-03 2,723 22.1 20.2 Thu-Aug-14 23,891 31.0 28.9 Blackout
34 24-Aug-03 2,749 23.4 20.4 Thu-Aug-21 20,726 31.7 23.3 Conservation Appeals
35 31-Aug-03 2,845 21.8 18.5 Tue-Aug-26 21,910 30.0 27.5
36 7-Sep-03 2,689 20.1 20.3 Wed-Sep-3 19,761 23.2 26.1 Labour Day
37 14-Sep-03 2,868 20.7 16.8 Thu-Sep-11 20,700 26.8 29.6
38 21-Sep-03 2,772 18.0 17.3 Mon-Sep-15 20,243 19.6 26.8
39 28-Sep-03 2,679 15.6 15.4 Mon-Sep-22 19,194 18.4 19.5
40 5-Oct-03 2,731 8.4 11.6 Thu-Oct-2 19,062 9.4 9.5
41 12-Oct-03 2,695 15.3 12.4 Thu-Oct-9 19,033 23.6 9.5
42 19-Oct-03 2,667 9.3 9.9 Tue-Oct-14 19,339 16.2 9.8 Thanksgiving
43 26-Oct-03 2,794 7.5 7.7 Thu-Oct-23 19,764 5.4 5.6
44 2-Nov-03 2,796 9.3 7.5 Tue-Oct-28 20,408 9.7 4.0
45 9-Nov-03 2,891 4.0 7.6 Tue-Nov-4 20,872 4.7 3.8
46 16-Nov-03 2,918 4.6 4.2 Thu-Nov-13 21,289 2.0 1.0 Remembrance Day
47 23-Nov-03 2,871 8.0 2.3 Mon-Nov-17 21,051 5.3 -2.0
48 30-Nov-03 2,973 4.1 1.7 Mon-Nov-24 21,584 13.4 -2.0
49 7-Dec-03 3,146 -2.9 -0.5 Tue-Dec-2 22,798 -5.6 -8.4
50 14-Dec-03 3,162 -0.1 -0.5 Mon-Dec-8 22,664 1.4 -1.1
51 21-Dec-03 3,135 -0.3 -2.2 Mon-Dec-15 22,769 1.1 -7.4
52 28-Dec-03 2,703 3.3 -3.4 Mon-Dec-22 21,276 5.9 -4.3 Christmas & Boxing Day
1 4-Jan-04 2,707 4.4 -2.9 Tue-Dec-30 19,971 3.0 -5.5 New Years Day
2 11-Jan-04 3,369 -10.2 -4.4 Fri-Jan-9 23,957 -18.3 -8.8
3 18-Jan-04 3,445 -10.7 -7.0 Thu-Jan-15 24,937 -19.7 -13.5 All-Time January Peak
4 25-Jan-04 3,446 -12.1 -4.4 Thu-Jan-22 23,740 -7.9 -13.0
5 1-Feb-04 3,419 -8.4 -4.8 Mon-Jan-26 24,843 -12.8 -8.7
6 8-Feb-04 3,239 -4.0 -5.7 Wed-Feb-4 22,608 -3.9 -13.5
7 15-Feb-04 3,215 -4.2 -4.9 Wed-Feb-11 22,141 -3.2 -8.7
8 22-Feb-04 3,158 -1.8 -1.5 Mon-Feb-16 22,591 -5.7 -7.5
9 29-Feb-04 3,039 0.3 -3.0 Mon-Feb-23 21,397 -1.2 -8.0
10 7-Mar-04 2,961 5.0 -1.4 Thu-Mar-4 20,576 6.8 -5.5
11 14-Mar-04 3,027 -0.1 0.5 Mon-Mar-8 21,033 0.2 -2.4
12 21-Mar-04 3,069 -1.1 1.4 Tue-Mar-16 21,634 -3.1 -1.5
13 28-Mar-04 2,921 5.9 4.4 Mon-Mar-22 21,411 -2.8 2.5
14 4-Apr-04 2,847 5.5 4.6 Thu-Apr-1 19,867 5.2 0.2
15 11-Apr-04 2,746 4.6 6.5 Mon-Apr-5 19,911 3.2 5.0 Good Friday
16 18-Apr-04 2,741 8.3 8.1 Tue-Apr-13 19,287 4.2 3.4 Easter Monday
17 25-Apr-04 2,692 10.5 9.4 Wed-Apr-21 18,456 20.0 6.0
18 2-May-04 2,726 11.5 10.8 Mon-Apr-26 18,934 15.3 7.1
19 9-May-04 2,706 9.7 13.3 Mon-May-3 18,664 8.3 11.4
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
20 16-May-04 2,746 18.7 13.8 Thu-May-13 20,327 27.3 8.7 All-Time May Peak
21 23-May-04 2,670 15.9 15.6 Thu-May-20 19,003 23.6 24.8
22 30-May-04 2,607 14.4 17.5 Thu-May-27 18,395 17.7 23.5 Victoria Day
23 6-Jun-04 2,661 15.7 18.1 Mon-May-31 18,593 13.2 25.5
24 13-Jun-04 2,893 20.4 20.9 Wed-Jun-9 23,163 31.3 30.6
25 20-Jun-04 2,894 19.9 20.6 Mon-Jun-14 21,921 27.3 29.3
26 27-Jun-04 2,774 18.5 21.7 Thu-Jun-24 20,212 25.8 31.3
27 4-Jul-04 2,757 20.9 22.6 Wed-Jun-30 19,602 23.9 29.2 Canada Day
28 11-Jul-04 2,792 20.5 22.2 Mon-Jul-5 19,990 20.8 29.6
29 18-Jul-04 2,913 22.7 24.2 Mon-Jul-12 22,142 27.4 30.2
30 25-Jul-04 2,983 21.9 22.8 Thu-Jul-22 23,976 30.1 30.9
31 1-Aug-04 2,933 21.5 22.1 Thu-Jul-29 21,790 26.7 27.0
32 8-Aug-04 2,843 20.8 21.4 Tue-Aug-3 23,159 28.6 30.8 Civic Holiday
33 15-Aug-04 2,828 19.8 20.2 Tue-Aug-10 21,171 26.5 28.9
34 22-Aug-04 2,809 19.7 20.4 Wed-Aug-18 20,570 25.5 23.3
35 29-Aug-04 3,029 22.5 18.5 Fri-Aug-27 22,613 27.6 27.5
36 5-Sep-04 2,949 21.4 20.3 Fri-Sep-3 21,467 28.4 26.1
37 12-Sep-04 2,847 20.7 16.8 Tue-Sep-7 21,067 24.6 29.6
38 19-Sep-04 2,878 18.3 17.3 Wed-Sep-15 21,911 25.8 26.8
39 26-Sep-04 2,893 20.5 15.4 Thu-Sep-23 21,545 27.5 19.5
40 3-Oct-04 2,780 16.1 11.6 Mon-Sep-27 20,063 23.6 9.5
41 10-Oct-04 2,745 15.4 12.4 Thu-Oct-7 19,594 26.8 9.5
42 17-Oct-04 2,716 10.5 9.9 Thu-Oct-14 19,478 13.4 9.8 Thanksgiving
43 24-Oct-04 2,826 8.4 7.7 Mon-Oct-18 19,829 8.8 5.6
44 31-Oct-04 2,796 11.4 7.5 Wed-Oct-27 19,538 11.4 4.0
45 7-Nov-04 2,859 7.8 7.6 Thu-Nov-4 20,768 6.2 3.8
46 14-Nov-04 2,964 3.4 4.2 Mon-Nov-8 21,136 5.2 1.0 Remembrance Day
47 21-Nov-04 2,885 8.8 2.3 Mon-Nov-15 20,691 13.4 -2.0
48 28-Nov-04 3,005 4.3 1.7 Wed-Nov-24 21,881 3.4 -2.0
49 5-Dec-04 3,096 2.0 -0.5 Fri-Dec-3 22,118 -0.6 -8.4
50 12-Dec-04 3,170 2.1 -0.5 Mon-Dec-6 23,445 -1.7 -1.1
51 19-Dec-04 3,258 -3.7 -2.2 Tue-Dec-14 23,431 -4.9 -7.4
All-Time Winter Peak,
52 26-Dec-04 3,229 -7.9 -3.4 Mon-Dec-20 24,979 -12.3 -4.3 Christmas & Boxing Day
53 2-Jan-05 2,906 -0.3 -3.4 Mon-Dec-27 21,348 -8.5 -5.5 New Years Day
1 9-Jan-05 3,186 -1.3 -2.9 Thu-Jan-6 23,233 -2.7 -5.5
2 16-Jan-05 3,215 -1.7 -4.4 Tue-Jan-11 22,640 -1.6 -8.8
3 23-Jan-05 3,529 -14.0 -7.0 Tue-Jan-18 24,362 -14.5 -13.5 All-Time Weekend Peak
4 30-Jan-05 3,422 -9.8 -4.4 Thu-Jan-27 24,353 -14.6 -13.0
5 6-Feb-05 3,164 -1.6 -4.8 Mon-Jan-31 22,629 -1.5 -8.7
6 13-Feb-05 3,140 -1.8 -5.7 Wed-Feb-9 22,322 -3.9 -13.5
7 20-Feb-05 3,213 -2.7 -4.9 Fri-Feb-18 22,269 -9.3 -8.7
8 27-Feb-05 3,226 -5.4 -1.5 Thu-Feb-24 22,321 -5.7 -7.5
9 6-Mar-05 3,169 -3.0 -3.0 Mon-Feb-28 22,187 1.8 -8.0
10 13-Mar-05 3,206 -4.2 -1.4 Tue-Mar-8 22,724 -8.5 -5.5
11 20-Mar-05 3,041 -0.8 0.5 Mon-Mar-14 20,975 -0.8 -2.4 Good Friday
12 27-Mar-05 2,884 2.2 1.4 Wed-Mar-23 20,777 1.5 -1.5 Easter Monday
13 3-Apr-05 2,869 6.4 4.4 Mon-Mar-28 19,649 6.6 2.5
14 10-Apr-05 2,772 9.7 4.6 Mon-Apr-4 19,343 10.9 0.2 5% Voltage Reduction April 7
15 17-Apr-05 2,706 9.9 6.5 Mon-Apr-11 18,695 7.9 5.0
16 24-Apr-05 2,738 10.5 8.1 Wed-Apr-20 18,534 16.2 3.4
17 1-May-05 2,756 8.0 9.4 Mon-Apr-25 19,336 6.5 6.0
18 8-May-05 2,662 10.5 10.8 Mon-May-2 18,341 8.6 7.1
19 15-May-05 2,676 12.6 13.3 Wed-May-11 18,623 22.6 11.4
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
20 22-May-05 2,637 12.9 13.8 Mon-May-16 18,362 11.0 8.7
21 29-May-05 2,617 16.5 15.6 Thu-May-26 18,779 24.2 24.8 Victoria Day
22 5-Jun-05 2,827 20.1 17.5 Thu-Jun-2 20,001 26.0 23.5
23 12-Jun-05 3,348 26.4 18.1 Fri-Jun-10 24,793 30.5 25.5
24 19-Jun-05 2,964 20.2 20.9 Tue-Jun-14 24,995 29.7 30.6
25 26-Jun-05 3,090 24.0 20.6 Fri-Jun-24 23,802 34.0 29.3 Power Warning June 24
All-Time June Peak, Power
Warning June 28-29, Canada
26 3-Jul-05 3,207 25.4 21.7 Mon-Jun-27 26,157 31.6 31.3 Day
27 10-Jul-05 3,050 24.1 22.6 Mon-Jul-4 23,463 29.5 29.2
28 17-Jul-05 3,486 28.4 22.2 Wed-Jul-13 26,160 34.6 29.6 All-Time July Peak
29 24-Jul-05 3,353 26.5 24.2 Mon-Jul-18 25,857 33.3 30.2 Power Warning July 18-21
30 31-Jul-05 3,069 23.3 22.8 Mon-Jul-25 25,068 33.8 30.9
Power Warning & 5% Voltage
Reduction August 3-4
31 7-Aug-05 3,312 26.2 22.1 Thu-Aug-4 25,050 32.8 27.0
32 14-Aug-05 3,309 25.0 21.4 Tue-Aug-9 25,816 32.9 30.8 Power Warning August 9-10
33 21-Aug-05 3,051 22.5 20.2 Mon-Aug-15 22,134 27.6 28.9
34 28-Aug-05 2,968 21.1 20.4 Fri-Aug-26 21,485 27.4 23.3
35 4-Sep-05 3,016 21.9 18.5 Mon-Aug-29 22,913 28.4 27.5
36 11-Sep-05 2,901 20.4 20.3 Wed-Sep-7 22,213 27.5 26.1 Labour Day
37 18-Sep-05 3,058 22.3 16.8 Tue-Sep-13 23,914 30.1 29.6
38 25-Sep-05 2,916 20.0 17.3 Wed-Sep-21 21,282 28.5 26.8
39 2-Oct-05 2,772 16.7 15.4 Mon-Sep-26 20,064 22.3 19.5
40 9-Oct-05 2,805 16.7 11.6 Tue-Oct-4 20,752 25.8 9.5 All-Time October peak
41 16-Oct-05 2,660 13.0 12.4 Wed-Oct-12 19,163 13.2 9.5 Thanksgiving
42 23-Oct-05 2,757 8.8 9.9 Thu-Oct-20 19,211 11.9 9.8
43 30-Oct-05 2,838 7.4 7.7 Wed-Oct-26 19,960 8.1 5.6
44 6-Nov-05 2,780 11.9 7.5 Wed-Nov-2 20,065 12.3 4.0
45 13-Nov-05 2,809 9.1 7.6 Thu-Nov-10 20,390 5.7 3.8 Remembrance Day
46 20-Nov-05 2,910 4.2 4.2 Thu-Nov-17 21,279 2.7 1.0
47 27-Nov-05 3,061 -2.4 2.3 Thu-Nov-24 22,564 -6.3 -2.0 All-Time November peak
48 4-Dec-05 3,020 2.1 1.7 Fri-Dec-2 21,746 -0.8 -2.0
49 11-Dec-05 3,205 -3.7 -0.5 Wed-Dec-7 23,173 -4.3 -8.4
50 18-Dec-05 3,287 -5.3 -0.5 Wed-Dec-14 23,766 -4.8 -1.1
51 25-Dec-05 3,107 -1.3 -2.2 Mon-Dec-19 23,377 -4.7 -7.4 Christmas Day
Boxing Day & New Year's Day
52 1-Jan-06 2,801 -1.0 -3.4 Wed-Dec-28 20,167 2.7 -4.3
1 8-Jan-06 3,064 -0.0 -2.9 Fri-Jan-6 21,941 -5.2 -5.5
2 15-Jan-06 3,051 1.6 -4.4 Mon-Jan-9 21,905 2.6 -8.8
3 22-Jan-06 3,136 0.3 -7.0 Mon-Jan-16 23,052 -5.0 -13.5
4 29-Jan-06 3,080 0.8 -4.4 Wed-Jan-25 22,404 -0.6 -13.0
5 5-Feb-06 3,002 2.7 -4.8 Tue-Jan-31 21,398 1.3 -8.7
6 12-Feb-06 3,173 -5.3 -5.7 Wed-Feb-8 22,230 -6.1 -13.5
7 19-Feb-06 3,183 -3.6 -4.9 Thu-Feb-16 22,321 -0.9 -8.7
8 26-Feb-06 3,138 -2.6 -1.5 Mon-Feb-20 21,928 -3.4 -7.5
9 5-Mar-06 3,166 -4.1 -3.0 Tue-Feb-28 22,264 -5.3 -8.0
10 12-Mar-06 2,959 4.3 -1.4 Mon-Mar-6 21,224 0.3 -5.5
11 19-Mar-06 2,996 0.8 0.5 Tue-Mar-14 20,958 1.8 -2.4
12 26-Mar-06 2,973 0.9 1.4 Mon-Mar-20 21,238 -1.7 -1.5
13 2-Apr-06 2,785 8.4 4.4 Mon-Mar-27 19,737 11.5 2.5
14 9-Apr-06 2,839 5.1 4.6 Wed-Apr-5 19,582 3.7 0.2
15 16-Apr-06 2,619 12.0 6.5 Wed-Apr-12 18,717 16.9 5.0 Good Friday
16 23-Apr-06 2,652 11.7 8.1 Tue-Apr-18 17,869 15.5 3.4 Easter Monday
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
17 30-Apr-06 2,675 9.5 9.4 Tue-Apr-25 18,796 7.2 6.0
18 7-May-06 2,605 14.2 10.8 Thu-May-4 18,063 23.0 7.1
19 14-May-06 2,625 15.6 13.3 Wed-May-10 18,303 23.4 11.4
20 21-May-06 2,604 12.1 13.8 Thu-May-18 17,986 14.5 8.7 Victoria Day
21 28-May-06 2,630 15.9 15.6 Fri-May-26 18,624 18.8 24.8
22 4-Jun-06 3,032 22.6 17.5 Tue-May-30 24,857 32.8 23.5 All-Time May peak
23 11-Jun-06 2,792 18.2 18.1 Wed-Jun-7 21,249 27.1 25.5
24 18-Jun-06 2,959 22.2 20.9 Sat-Jun-17 21,635 33.3 30.6
25 25-Jun-06 3,024 22.1 20.6 Thu-Jun-22 23,349 30.6 29.3
26 2-Jul-06 2,981 23.4 21.7 Wed-Jun-28 22,298 26.2 31.3
27 9-Jul-06 2,901 23.1 22.6 Tue-Jul-4 22,299 28.9 29.2 Canada Day
28 16-Jul-06 3,156 24.8 22.2 Fri-Jul-14 23,802 30.0 29.6
29 23-Jul-06 3,190 23.8 24.2 Mon-Jul-17 25,898 33.8 30.2
30 30-Jul-06 3,303 25.7 22.8 Wed-Jul-26 24,630 30.5 30.9
All-Time August Peak, All-Time
31 6-Aug-06 3,372 26.6 22.1 Tue-Aug-1 27,005 36.4 27.0 System Peak
32 13-Aug-06 2,892 21.8 21.4 Tue-Aug-8 21,444 24.6 30.8 Civic Holiday
33 20-Aug-06 2,991 22.2 20.2 Fri-Aug-18 23,008 30.4 28.9
34 27-Aug-06 2,892 20.9 20.4 Tue-Aug-22 21,350 27.5 23.3
35 3-Sep-06 2,773 18.5 18.5 Mon-Aug-28 20,627 23.6 27.5
36 10-Sep-06 2,694 18.6 20.3 Fri-Sep-8 19,976 28.0 26.1 Labour Day
37 17-Sep-06 2,718 17.8 16.8 Wed-Sep-13 18,863 20.9 29.6
38 24-Sep-06 2,700 16.5 17.3 Mon-Sep-18 19,743 26.3 26.8
39 1-Oct-06 2,663 13.1 15.4 Wed-Sep-27 18,666 22.3 19.5
40 8-Oct-06 2,649 13.4 11.6 Tue-Oct-3 18,838 23.3 9.5
41 15-Oct-06 2,639 9.8 12.4 Thu-Oct-12 19,050 7.8 9.5 Thanksgiving
42 22-Oct-06 2,718 10.2 9.9 Tue-Oct-17 19,215 12.2 9.8
43 29-Oct-06 2,798 5.0 7.7 Wed-Oct-25 19,379 7.8 5.6
44 5-Nov-06 2,824 5.3 7.5 Thu-Nov-2 20,449 4.4 4.0
45 12-Nov-06 2,785 7.5 7.6 Tue-Nov-7 20,130 10.8 3.8
46 19-Nov-06 2,843 5.6 4.2 Mon-Nov-13 20,896 5.4 1.0
47 26-Nov-06 2,865 3.9 2.3 Mon-Nov-20 21,267 1.5 -2.0
48 3-Dec-06 2,921 6.4 1.7 Fri-Dec-1 20,880 3.6 -2.0
49 10-Dec-06 3,122 -1.5 -0.5 Thu-Dec-7 22,941 -5.5 -8.4
50 17-Dec-06 2,945 6.7 -0.5 Mon-Dec-11 21,845 4.9 -1.1
51 24-Dec-06 2,899 4.2 -2.2 Tue-Dec-19 21,588 4.4 -7.4
52 31-Dec-06 2,671 1.0 -3.4 Fri-Dec-29 19,917 -2.6 -4.3 Christmas & Boxing Day
1 7-Jan-07 2,783 6.2 -2.9 Tue-Jan-2 20,544 5.6 -5.5 New Years Day
2 14-Jan-07 3,047 0.2 -4.4 Wed-Jan-10 22,295 -3.0 -8.8
3 21-Jan-07 3,212 -5.5 -7.0 Tue-Jan-16 23,261 -8.6 -13.5
4 28-Jan-07 3,260 -7.2 -4.4 Thu-Jan-25 23,537 -13.1 -13.0
5 4-Feb-07 3,289 -8.6 -4.8 Mon-Jan-29 22,996 -6.3 -8.7
6 11-Feb-07 3,347 -9.3 -5.7 Mon-Feb-5 23,913 -10.5 -13.5
7 18-Feb-07 3,341 -10.6 -4.9 Tue-Feb-13 23,935 -14.0 -8.7 All-Time February Peak
8 25-Feb-07 3,162 -3.2 -1.5 Mon-Feb-19 22,715 -5.3 -7.5
9 4-Mar-07 3,075 -1.5 -3.0 Thu-Mar-1 21,909 -0.8 -8.0
10 11-Mar-07 3,174 -4.9 -1.4 Tue-Mar-6 22,969 -12.5 -5.5
11 18-Mar-07 2,950 2.9 0.5 Fri-Mar-16 20,437 -2.4 -2.4
12 25-Mar-07 2,947 2.8 1.4 Mon-Mar-19 20,678 1.1 -1.5
13 1-Apr-07 2,769 8.0 4.4 Mon-Mar-26 19,014 19.2 2.5
14 8-Apr-07 2,839 1.0 4.6 Wed-Apr-4 19,635 6.7 0.2 Good Friday
15 15-Apr-07 2,891 3.2 6.5 Wed-Apr-11 20,016 4.1 5.0 Easter Monday
16 22-Apr-07 2,695 11.7 8.1 Mon-Apr-16 19,534 5.2 3.4
17 29-Apr-07 2,651 12.5 9.4 Thu-Apr-26 18,369 9.7 6.0
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
18 6-May-07 2,591 11.7 10.8 Tue-May-1 18,108 9.7 7.1
19 13-May-07 2,615 16.4 13.3 Fri-May-11 18,587 20.5 11.4
20 20-May-07 2,620 14.2 13.8 Tue-May-15 19,315 28.4 8.7
21 27-May-07 2,696 18.5 15.6 Fri-May-25 20,971 27.4 24.8
22 3-Jun-07 2,932 21.7 17.5 Thu-May-31 21,490 27.5 23.5
23 10-Jun-07 2,745 18.0 18.1 Fri-Jun-8 22,022 31.2 25.5
24 17-Jun-07 3,065 24.0 20.9 Wed-Jun-13 23,338 29.7 30.6
25 24-Jun-07 2,890 21.2 20.6 Mon-Jun-18 23,028 28.3 29.3
26 1-Jul-07 3,070 23.4 21.7 Tue-Jun-26 25,737 34.2 31.3
27 8-Jul-07 2,778 22.2 22.6 Fri-Jul-6 20,313 28.2 29.2 Canada Day
28 15-Jul-07 2,919 22.9 22.2 Mon-Jul-9 24,473 33.7 29.6
29 22-Jul-07 2,837 22.1 24.2 Thu-Jul-19 21,461 25.8 30.2
30 29-Jul-07 3,014 23.0 22.8 Thu-Jul-26 22,116 27.5 30.9
31 5-Aug-07 3,293 26.7 22.1 Thu-Aug-2 25,584 34.5 27.0
32 12-Aug-07 3,091 24.8 21.4 Wed-Aug-8 24,623 31.7 30.8 Civic Holiday
33 19-Aug-07 2,880 21.7 20.2 Thu-Aug-16 22,432 29.6 28.9
34 26-Aug-07 2,934 22.1 20.4 Fri-Aug-24 23,497 32.8 23.3
35 2-Sep-07 2,936 22.4 18.5 Wed-Aug-29 25,003 33.5 27.5
36 9-Sep-07 2,956 23.1 20.3 Fri-Sep-7 24,046 32.9 26.1 Labour Day
37 16-Sep-07 2,693 16.3 16.8 Mon-Sep-10 19,486 23.0 29.6
38 23-Sep-07 2,762 19.4 17.3 Fri-Sep-21 20,239 27.5 26.8
39 30-Sep-07 2,789 19.2 15.4 Tue-Sep-25 22,392 32.8 19.5
40 7-Oct-07 2,748 19.5 11.6 Fri-Oct-5 19,233 24.3 9.5
41 14-Oct-07 2,652 14.4 12.4 Tue-Oct-9 19,038 22.2 9.5 Thanksgiving Day
42 21-Oct-07 2,656 15.6 9.9 Thu-Oct-18 18,845 18.3 9.8
43 28-Oct-07 2,666 12.0 7.7 Mon-Oct-22 18,856 24.8 5.6
44 4-Nov-07 2,693 9.1 7.5 Thu-Nov-1 19,130 8.9 4.0
45 11-Nov-07 2,821 4.2 7.6 Wed-Nov-7 20,407 3.1 3.8
46 18-Nov-07 2,831 5.4 4.2 Mon-Nov-12 20,341 10.4 1.0
47 25-Nov-07 2,967 0.9 2.3 Thu-Nov-22 21,600 -3.4 -2.0
48 2-Dec-07 3,089 -1.0 1.7 Wed-Nov-28 21,814 -0.3 -2.0
49 9-Dec-07 3,153 -3.8 -0.5 Mon-Dec-3 22,679 -2.0 -8.4
50 16-Dec-07 3,200 -2.9 -0.5 Tue-Dec-11 22,534 1.1 -1.1
51 23-Dec-07 3,080 0.4 -2.2 Mon-Dec-17 22,935 -3.4 -7.4
52 30-Dec-07 2,720 -0.2 -3.4 Fri-Dec-28 19,708 2.1 -4.3 Christmas & Boxing Day
1 6-Jan-08 2,957 -3.0 -3.3 Thu-Jan-3 22,716 -7.7 -5.5 New Years Day
2 13-Jan-08 2,907 5.8 -4.0 Thu-Jan-10 20,852 3.6 -8.8
3 20-Jan-08 3,105 -3.2 -7.0 Sun-Jan-20 21,519 -8.9 -13.5
4 27-Jan-08 3,207 -5.8 -4.5 Mon-Jan-21 22,778 -7.4 -13.0
5 3-Feb-08 3,102 -1.9 -4.8 Wed-Jan-30 22,782 -8.0 -8.7
6 10-Feb-08 3,051 -1.8 -6.1 Wed-Feb-6 21,287 -1.7 -13.5
7 17-Feb-08 3,187 -6.4 -3.9 Mon-Feb-11 23,054 -9.3 -8.7
8 24-Feb-08 3,075 -4.7 -1.4 Wed-Feb-20 21,949 -6.8 -7.5 Family Day
9 2-Mar-08 3,126 -5.3 -2.9 Wed-Feb-27 22,273 -10.1 -8.0
10 9-Mar-08 3,030 -1.7 -1.4 Tue-Mar-4 20,990 -1.6 -5.5
11 16-Mar-08 2,944 -1.0 0.5 Mon-Mar-10 20,405 -0.7 -2.4
12 23-Mar-08 2,882 -0.5 1.4 Tue-Mar-18 20,216 3.0 -1.5 Good Friday
13 30-Mar-08 2,904 0.5 4.4 Tue-Mar-25 20,381 2.6 2.5
14 6-Apr-08 2,802 5.5 4.6 Tue-Apr-1 19,512 14.1 0.2
15 13-Apr-08 2,735 8.2 6.5 Fri-Apr-11 19,341 5.2 5.0
16 20-Apr-08 2,631 13.8 8.1 Mon-Apr-14 18,334 9.7 3.4
17 27-Apr-08 2,593 16.2 9.4 Mon-Apr-21 18,106 20.4 6.0
18 4-May-08 2,643 8.1 10.8 Mon-Apr-28 18,445 6.9 7.1
19 11-May-08 2,560 12.3 13.3 Wed-May-7 18,004 15.6 11.4
Table 3.3.1: Weekly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Week Actual Energy Weekly Average Normal Average Actual Peak Peak Day Normal Peak
Week Ending Peak Day Notes for Week
Number (GWh) Temperature (°C) Temperature (MW) Temperature (°C) Temperature (°C)
20 18-May-08 2,566 13.3 13.8 Wed-May-14 17,929 17.0 8.7
21 25-May-08 2,542 12.2 15.6 Wed-May-21 17,970 9.4 24.8 Victoria Day
22 1-Jun-08 2,612 16.3 17.5 Mon-May-26 18,650 26.9 23.5
23 8-Jun-08 2,872 22.1 18.1 Fri-Jun-6 21,583 32.7 25.5
24 15-Jun-08 2,980 22.4 19.0 Mon-Jun-9 24,195 33.1 30.6
25 22-Jun-08 2,694 17.0 21.7 Mon-Jun-16 19,898 22.9 29.3
26 29-Jun-08 2,933 22.3 21.9 Thu-Jun-26 22,450 29.4 31.3
27 6-Jul-08 2,723 20.6 21.8 Wed-Jul-2 20,851 27.8 29.2 Canada Day
28 13-Jul-08 3,050 23.9 21.9 Tue-Jul-8 23,680 30.7 29.6
29 20-Jul-08 3,072 24.0 23.3 Thu-Jul-17 23,787 30.0 30.2
30 27-Jul-08 2,906 22.2 23.3 Mon-Jul-21 21,202 24.8 30.9
31 3-Aug-08 2,979 23.1 22.9 Thu-Jul-31 21,896 26.4 27.0
32 10-Aug-08 2,828 20.0 22.2 Tue-Aug-5 22,707 26.1 30.8 Civic Holiday
33 17-Aug-08 2,786 20.5 20.9 Thu-Aug-14 19,694 23.4 28.9
34 24-Aug-08 2,938 21.6 20.3 Mon-Aug-18 22,571 29.4 23.3
35 31-Aug-08 2,797 19.8 20.7 Fri-Aug-29 19,497 24.8 27.5
36 7-Sep-08 2,901 21.3 20.3 Wed-Sep-3 22,975 30.3 26.1 Labour Day
37 14-Sep-08 2,763 18.7 16.8 Sun-Sep-14 19,676 28.0 29.6
38 21-Sep-08 2,676 16.4 17.3 Wed-Sep-17 18,795 23.0 26.8
39 28-Sep-08 2,682 17.1 15.4 Thu-Sep-25 19,143 23.5 19.5
40 5-Oct-08 2,616 11.7 11.6 Mon-Sep-29 18,338 14.3 9.5
41 12-Oct-08 2,601 13.0 12.4 Wed-Oct-8 18,706 14.6 9.5
42 19-Oct-08 2,542 11.8 9.9 Thu-Oct-16 18,228 13.7 9.8 Thanksgiving Day
43 26-Oct-08 2,663 7.8 7.7 Tue-Oct-21 19,033 5.9 5.6
44 2-Nov-08 2,691 5.8 7.5 Tue-Oct-28 19,366 4.8 4.0
45 9-Nov-08 2,608 10.5 7.6 Mon-Nov-3 19,036 15.6 3.8
46 16-Nov-08 2,703 5.9 4.2 Tue-Nov-11 19,829 5.6 1.0 Remembrance Day
47 23-Nov-08 2,929 -3.3 2.3 Wed-Nov-19 21,159 -1.6 -2.0
48 30-Nov-08 2,883 1.8 1.7 Mon-Nov-24 21,279 3.8 -2.0
49 7-Dec-08 2,977 -1.7 -0.8 Tue-Dec-2 21,079 0.3 -8.4
50 14-Dec-08 3,097 -2.4 1.2 Mon-Dec-8 22,541 -3.7 -1.1
51 21-Dec-08 3,090 -5.1 -0.3 Fri-Dec-19 22,222 -8.9 -7.4
52 28-Dec-08 2,738 -0.4 -3.0 Mon-Dec-22 21,757 -7.7 -4.3 Christmas & Boxing Day
1 4-Jan-09 2,770 -4.3 -3.8 Sun-Jan-4 19,983 -2.1 -5.5 New Years Day
2 11-Jan-09 3,042 -5.8 -4.7 Thu-Jan-8 21,304 -4.5 -8.8
3 18-Jan-09 3,246 -10.2 -7.0 Thu-Jan-15 22,983 -11.3 -13.5
4 25-Jan-09 3,146 -8.1 -5.0 Tue-Jan-20 22,248 -10.4 -13.0
5 1-Feb-09 3,107 -6.7 -4.2 Mon-Jan-26 22,304 -8.9 -8.7
6 8-Feb-09 3,006 -5.1 -6.4 Wed-Feb-4 22,110 -13.1 -13.5
7 15-Feb-09 2,851 0.8 -4.1 Thu-Feb-12 20,093 4.5 -8.7
8 22-Feb-09 2,902 -3.1 -2.2 Thu-Feb-19 20,878 -5.2 -7.5 Family Day
9 1-Mar-09 2,952 -4.1 -2.7 Mon-Feb-23 20,920 -6.1 -8.0
10 8-Mar-09 2,896 -0.4 -1.4 Mon-Mar-2 21,466 -9.6 -5.5
11 15-Mar-09 2,806 0.6 0.5 Thu-Mar-12 19,619 -3.4 -2.4
12 22-Mar-09 2,633 4.3 1.4 Thu-Mar-19 18,214 3.2 -1.5
13 29-Mar-09 2,644 5.3 4.4 Tue-Mar-24 18,603 2.8 2.5
14 5-Apr-09 2,609 6.6 4.6 Mon-Mar-30 18,239 4.9 0.2
15 12-Apr-09 2,558 3.3 6.5 Tue-Apr-7 18,744 -0.5 5.0 Good Friday
16 19-Apr-09 2,456 10.5 8.1 Tue-Apr-14 17,190 11.4 3.4 Easter Monday
17 26-Apr-09 2,480 10.3 9.4 Mon-Apr-20 18,186 5.6 6.0
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Table 3.3.2: Monthly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Energy Peak 90th # of Hours Weather
Average Minimum Average Normal Average Forecasted Forecasted Peak Temperature Normal Peak Weather Corrected Forecasted Peak Forecasted
Month Demand Demand Percentile Above 20,000 Corrected
Hour (MW) Hour (MW) Temperature (°C) Temperature (°C) Energy (GWh) Error (°C) Temperature (°C) Peak (MW) (MW) MAPE
(GWh) (MW) (MW) (MW) Energy (GWh)
May-02 11,875 20,068 15,961 12,092 18,344 1 15.7 16.8 11,662 11,526 1.2% 27.9 28.4 20,245 19,777 2.3%
Jun-02 12,185 23,578 16,924 11,537 20,698 97 23.5 21.0 12,056 11,831 1.9% 30.7 31.3 23,273 21,897 5.9%
Jul-02 14,033 25,226 18,862 12,348 23,310 261 29.3 25.4 13,532 12,956 4.3% 34.7 30.9 23,654 23,007 2.7%
Aug-02 13,749 25,414 18,480 13,077 22,695 207 27.6 22.9 13,322 12,823 3.7% 33.4 30.8 24,272 22,720 6.4%
Sep-02 12,593 25,062 17,490 12,409 20,801 114 25.2 19.3 12,144 11,393 6.2% 33.5 29.8 21,739 21,100 2.9%
Oct-02 12,398 21,216 16,664 12,244 19,077 25 12.3 11.6 12,155 12,043 0.9% 28.8 23.3 19,902 20,319 2.1%
Nov-02 12,656 21,862 17,577 12,709 20,027 75 5.5 5.1 12,836 12,370 3.6% 0.1 -2.0 22,314 22,422 0.5%
Dec-02 13,484 23,334 18,123 13,057 21,022 197 0.5 -0.5 13,501 13,363 1.0% -1.2 -8.4 23,551 23,523 0.1%
Jan-03 14,487 24,158 19,471 13,236 22,223 346 -5.4 -3.9 14,211 13,920 2.1% -13.4 -13.5 23,893 23,850 0.2%
Feb-03 13,123 23,469 19,528 14,523 21,982 315 -3.7 -2.1 12,808 12,427 3.0% -10.0 -13.5 22,950 23,273 1.4%
Mar-03 13,414 23,117 18,030 13,289 20,781 142 3.3 2.5 13,159 12,902 2.0% -14.3 -5.5 21,752 22,090 1.6%
Apr-03 12,097 21,010 16,802 12,290 19,541 53 10.0 8.7 12,070 11,760 2.6% -1.8 0.2 20,847 19,851 4.8%
May-03 11,627 18,741 15,628 11,604 17,986 0 16.4 17.2 11,742 11,691 0.4% 13.1 8.7 19,845 19,853 0.0%
Jun-03 11,885 24,753 16,507 11,821 19,405 58 23.0 21.5 11,842 12,214 3.1% 33.3 31.3 23,523 22,799 3.1%
Jul-03 12,898 23,175 17,335 11,957 20,681 139 26.3 25.4 12,969 13,433 3.6% 31.3 30.9 23,763 23,684 0.3%
Aug-03 12,514 23,891 16,820 2,270 21,001 144 26.5 22.9 12,172 13,156 8.1% 31.0 30.8 23,561 23,347 0.9%
Sep-03 11,794 20,700 16,381 11,802 19,023 14 21.2 19.6 11,779 11,789 0.1% 26.8 29.8 20,307 21,600 6.4%
Oct-03 12,160 20,408 16,344 11,941 18,584 4 13.0 11.1 12,135 12,368 1.9% 9.7 4.0 21,259 20,667 2.8%
Nov-03 12,390 21,584 17,208 12,724 19,670 54 7.5 4.8 12,865 12,585 2.2% 13.4 -2.0 22,716 22,681 0.2%
Dec-03 13,328 22,798 17,914 12,550 20,959 165 2.2 -0.3 13,534 13,768 1.7% -5.6 -8.4 23,431 23,858 1.8%
Jan-04 14,767 24,937 19,849 13,219 22,977 399 -6.9 -3.9 14,323 14,192 0.9% -19.7 -13.5 24,409 24,078 1.4%
Feb-04 13,088 22,608 18,805 14,243 21,146 249 -0.4 -2.4 13,173 13,034 1.1% -3.9 -13.5 23,057 23,556 2.2%
Mar-04 13,225 21,634 17,775 13,238 20,123 84 5.2 2.5 13,203 13,279 0.6% -3.1 -5.5 21,870 22,452 2.7%
Apr-04 11,792 19,911 16,378 12,427 18,638 0 11.0 9.0 11,875 11,891 0.1% 3.2 0.2 20,526 19,943 2.8%
May-04 11,835 20,327 15,908 11,983 18,401 4 17.4 17.2 11,791 11,844 0.5% 27.3 28.4 20,053 20,167 0.6%
Jun-04 12,046 23,163 16,730 12,059 19,989 72 22.3 21.7 12,218 12,553 2.7% 31.3 31.3 23,163 23,585 1.8%
Jul-04 12,770 23,976 17,164 12,385 20,584 94 24.6 25.4 12,930 13,366 3.4% 30.1 30.9 24,618 23,677 3.8%
Aug-04 12,746 23,159 17,132 12,223 20,350 97 23.6 23.0 12,965 13,301 2.6% 28.6 30.8 23,230 23,298 0.3%
Sep-04 12,370 21,911 17,180 12,285 20,296 102 23.4 19.0 12,205 11,893 2.6% 25.8 29.8 20,959 21,881 4.4%
Oct-04 12,215 19,829 16,418 12,343 18,771 0 14.3 11.3 12,457 12,358 0.8% 8.8 4.0 20,926 21,212 1.4%
Nov-04 12,601 22,066 17,501 12,969 19,981 71 8.2 4.5 13,149 12,864 2.2% 5.0 -2.0 23,334 22,749 2.5%
Dec-04 13,982 24,979 18,793 14,169 21,867 261 -0.6 -0.3 13,837 13,652 1.3% -12.3 -8.4 24,073 23,404 2.8%
Jan-05 14,619 24,362 19,649 13,545 22,555 356 -4.4 -3.9 14,521 14,278 1.7% -14.5 -13.5 24,173 23,844 1.4%
Feb-05 12,732 22,322 18,946 14,854 21,242 249 -0.6 -2.1 12,866 12,800 0.5% -3.9 -13.5 22,791 23,518 3.2%
Mar-05 13,494 22,724 18,137 13,959 20,632 143 2.1 2.5 13,288 13,409 0.9% -8.5 -5.5 22,667 22,413 1.1%
Apr-05 11,828 19,343 16,428 12,279 18,455 0 12.0 8.7 12,209 11,934 2.3% 10.9 0.2 20,932 20,534 1.9%
May-05 11,745 19,007 15,786 11,950 18,140 0 16.7 17.2 11,734 12,027 2.5% 22.3 28.4 18,688 20,648 10.5%
Jun-05 13,499 26,157 18,749 12,066 23,350 260 27.3 21.5 12,680 12,366 2.5% 31.6 31.3 24,411 23,422 4.1%
Jul-05 14,094 26,160 18,944 12,109 23,811 277 29.0 25.4 13,573 13,266 2.3% 34.6 30.9 25,823 23,784 7.9%
Aug-05 14,031 25,816 18,859 13,487 22,804 274 27.1 22.9 13,565 13,533 0.2% 32.9 30.8 24,780 23,374 5.7%
Sep-05 12,553 23,914 17,434 12,541 20,722 140 23.8 19.6 12,368 12,180 1.5% 30.1 29.8 21,720 22,114 1.8%
Oct-05 12,187 20,752 16,381 12,112 18,944 22 14.5 11.1 12,127 12,478 2.9% 25.8 23.3 21,108 20,935 0.8%
Nov-05 12,441 22,564 17,279 12,548 20,020 74 7.8 4.8 12,682 12,878 1.5% -6.3 -2.0 22,614 22,917 1.3%
Dec-05 13,746 23,766 18,475 12,673 21,485 250 -1.5 -0.3 13,620 13,796 1.3% -4.8 -8.4 24,097 23,673 1.8%
Jan-06 13,596 23,052 18,274 13,644 20,907 189 2.5 -3.9 14,274 14,416 1.0% -5.0 -13.5 24,238 24,255 0.1%
Feb-06 12,568 22,321 18,703 14,051 20,958 220 -1.1 -2.1 12,600 12,940 2.7% -0.9 -13.5 22,387 23,797 6.3%
Mar-06 13,200 21,772 17,742 13,274 20,091 83 5.2 2.5 13,175 13,631 3.5% -2.2 -5.5 22,054 22,775 3.3%
Apr-06 11,513 19,582 15,990 12,020 18,469 0 12.7 8.7 11,956 12,052 0.8% 3.7 0.2 20,333 20,923 2.9%
May-06 11,927 24,857 16,032 11,812 18,116 42 19.0 17.2 11,824 12,305 4.1% 32.8 28.4 21,889 21,702 0.9%
Jun-06 12,542 23,349 17,419 11,957 20,688 143 24.2 21.5 12,478 12,553 0.6% 30.6 31.3 23,349 24,215 3.7%
Jul-06 13,854 26,092 18,620 12,470 22,949 269 28.0 25.4 13,348 13,632 2.1% 33.6 30.9 25,078 25,044 0.1%
Aug-06 13,308 27,005 17,887 12,545 21,104 172 25.4 22.9 13,263 13,659 3.0% 36.4 30.8 23,848 24,579 3.1%
Sep-06 11,521 19,976 16,001 11,796 18,524 0 19.3 19.6 11,662 12,283 5.3% 28.0 29.8 19,891 23,395 17.6%
Oct-06 11,962 19,590 16,078 11,621 18,410 0 12.5 11.1 11,803 12,599 6.7% 13.5 5.6 19,323 21,602 11.8%
Nov-06 12,179 21,267 16,915 12,720 19,351 30 8.3 4.8 12,634 12,956 2.5% 1.5 -2.0 22,829 23,175 1.5%
Dec-06 12,884 22,941 17,317 12,246 20,322 107 4.2 -0.3 13,332 13,870 4.0% -5.5 -8.4 23,557 24,226 2.8%
Jan-07 13,758 23,537 18,492 12,941 21,448 243 -0.7 -3.9 14,060 14,425 2.6% -13.1 -13.5 23,740 24,617 3.7%
Feb-07 13,038 23,935 19,401 14,894 21,908 280 -5.2 -2.1 12,658 12,871 1.7% -14.0 -13.5 23,434 24,064 2.7%
Mar-07 13,193 22,969 17,732 13,331 20,433 121 4.0 2.5 13,158 13,390 1.8% -12.5 -5.5 22,484 22,831 1.5%
Apr-07 11,828 20,016 16,427 11,819 18,975 1 9.9 8.7 11,884 11,925 0.3% 4.1 0.2 20,439 20,530 0.4%
May-07 11,819 21,490 15,885 11,814 18,654 33 19.6 17.2 11,716 12,101 3.3% 27.5 28.4 19,497 21,186 8.7%
Jun-07 12,693 25,737 17,629 11,699 21,773 166 26.0 21.5 12,370 12,491 1.0% 34.2 31.3 24,820 24,546 1.1%
Jul-07 12,841 24,561 17,259 11,710 21,065 133 26.1 25.4 13,021 13,489 3.6% 32.6 30.9 24,663 25,492 3.4%
Aug-07 13,455 25,584 18,084 12,293 22,076 206 27.2 22.9 13,117 13,388 2.1% 34.5 30.8 24,258 24,694 1.8%
Sep-07 11,916 24,046 16,550 11,867 19,637 51 23.6 19.6 11,730 11,893 1.4% 32.9 29.8 21,308 22,602 6.1%
Oct-07 11,908 19,233 16,006 11,788 18,411 0 18.0 11.1 12,052 12,468 3.4% 24.3 23.3 19,742 21,468 8.7%
Nov-07 12,350 21,814 17,153 12,371 19,848 60 5.8 4.8 12,535 12,776 1.9% -0.3 -2.0 22,214 22,808 2.7%
Dec-07 13,408 22,935 18,021 13,146 20,761 189 -0.8 -0.3 13,303 13,657 2.7% -3.4 -8.4 22,969 24,220 5.4%
Jan-08 13,610 22,782 18,293 13,556 20,970 196 -0.2 -3.9 13,996 14,007 0.1% -8.0 -13.5 23,288 24,001 3.1%
Feb-08 12,897 23,054 18,530 14,295 21,007 204 -2.7 -2.4 12,775 12,997 1.7% -9.3 -13.5 23,021 23,494 2.1%
Mar-08 13,004 20,990 17,478 13,902 19,568 31 1.3 2.5 12,635 13,005 2.9% -1.6 -5.5 21,025 22,067 5.0%
Apr-08 11,520 19,512 16,001 11,571 18,117 0 14.4 9.0 11,872 11,751 1.0% 14.1 0.2 20,494 20,324 0.8%
Table 3.3.2: Monthly Weather and Demand History IESO_REP_0549v1.0 May 25, 2009
Energy Peak 90th # of Hours Weather
Average Minimum Average Normal Average Forecasted Forecasted Peak Temperature Normal Peak Weather Corrected Forecasted Peak Forecasted
Month Demand Demand Percentile Above 20,000 Corrected
Hour (MW) Hour (MW) Temperature (°C) Temperature (°C) Energy (GWh) Error (°C) Temperature (°C) Peak (MW) (MW) MAPE
(GWh) (MW) (MW) (MW) Energy (GWh)
May-08 11,407 18,650 15,332 11,465 17,576 0 16.2 17.2 11,443 11,824 3.3% 26.9 28.4 20,095 20,535 2.2%
Jun-08 12,189 24,195 16,929 11,764 20,434 101 23.8 21.7 11,982 12,220 2.0% 33.1 31.3 23,503 24,175 2.9%
Jul-08 13,156 23,787 17,682 12,035 21,320 176 26.0 25.4 13,124 13,264 1.1% 30.0 30.9 24,901 25,077 0.7%
Aug-08 12,549 22,707 16,866 11,986 19,787 65 23.9 23.0 12,703 13,024 2.5% 26.1 30.8 23,247 24,324 4.6%
Sep-08 11,793 22,975 16,380 12,061 18,964 41 21.1 19.0 11,693 11,656 0.3% 30.3 29.8 21,189 22,189 4.7%
Oct-08 11,634 19,366 15,637 11,450 17,924 0 13.1 11.3 11,692 12,091 3.4% 4.8 4.0 19,407 20,828 7.3%
Nov-08 11,829 21,279 16,429 11,881 19,037 24 6.1 4.5 12,096 12,312 1.8% 3.8 -2.0 22,089 22,041 0.2%
Dec-08 13,088 22,541 17,591 11,992 20,509 121 -1.1 -0.3 12,908 13,315 3.2% -3.7 -8.4 22,147 23,056 4.1%
Jan-09 13,730 22,983 18,455 13,872 21,034 199 -5.7 -3.9 13,409 13,728 2.4% -11.3 -13.5 22,901 23,813 3.7%
Feb-09 11,698 22,110 17,408 13,312 19,676 48 -0.2 -1.5 11,833 12,297 3.9% -13.1 -13.5 22,217 23,221 4.5%
Mar-09 12,167 21,466 16,353 11,855 18,907 21 4.9 3.6 12,142 12,747 5.0% -9.6 -5.5 20,885 21,898 4.8%
Apr-09 10,747 18,744 14,926 10,790 17,106 0 11.7 10.7 10,846 11,355 4.7% -0.5 2.8 19,717 20,075 1.8%
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Table 3.3.3: Monthly Consumption by Market Participant Type IESO_REP_0549v1.0 May 25, 2009
Monthly Energy Demand (GWh) Monthly Peak Demand (MW)
Month Energy LDC Wholesale Generator Peak LDC Wholesale Generator
Losses Losses
Demand Consumption Consumption Consumption Demand Consumption Consumption Consumption
May-02 11,875 9,467 2,082 140 186 20,068 16,712 2,855 158 344
Jun-02 12,185 9,864 2,012 135 175 23,578 20,424 2,666 138 351
Jul-02 14,033 11,576 2,019 150 288 25,226 22,070 2,428 135 594
Aug-02 13,749 11,167 2,097 177 308 25,414 21,840 2,536 198 840
Sep-02 12,593 10,114 2,051 142 286 25,062 21,662 2,538 128 734
Oct-02 12,398 9,862 2,137 149 249 21,216 17,640 2,841 142 593
Nov-02 12,656 10,127 2,113 144 272 21,862 18,377 2,778 169 538
Dec-02 13,484 11,037 2,023 170 253 23,334 19,817 2,758 147 612
Jan-03 14,487 11,889 2,188 168 243 24,158 20,759 2,837 155 407
Feb-03 13,123 10,716 1,981 156 270 23,469 20,008 2,822 216 423
Mar-03 13,414 10,768 2,192 167 286 23,117 19,676 2,899 187 354
Apr-03 12,097 9,624 2,089 162 223 21,010 17,747 2,681 197 385
May-03 11,627 9,166 2,115 144 203 18,741 15,366 2,839 187 349
Jun-03 11,885 9,583 1,922 168 212 24,753 21,561 2,289 189 714
Jul-03 12,898 10,665 1,836 158 239 23,175 20,422 2,226 162 365
Aug-03 12,514 10,341 1,784 170 219 23,891 20,898 2,375 184 433
Sep-03 11,794 9,431 1,977 168 218 20,700 17,436 2,631 164 469
Oct-03 12,160 9,686 2,067 198 208 20,408 16,869 2,794 299 447
Nov-03 12,390 9,948 2,037 176 229 21,584 17,959 2,814 190 621
Dec-03 13,328 10,933 1,970 184 241 22,798 19,232 2,867 176 522
Jan-04 14,767 12,198 2,104 199 266 24,937 21,469 2,733 264 470
Feb-04 13,088 10,673 1,970 178 268 22,608 19,019 2,717 255 616
Mar-04 13,225 10,655 2,122 170 278 21,634 18,041 2,673 263 657
Apr-04 11,792 9,441 1,966 135 251 19,911 16,610 2,742 178 381
May-04 11,835 9,343 2,044 155 293 20,327 17,050 2,530 166 581
Jun-04 12,046 9,547 2,053 164 281 23,163 19,688 2,683 158 634
Jul-04 12,770 10,307 1,967 177 319 23,976 20,492 2,507 166 811
Aug-04 12,746 10,241 2,047 178 280 23,159 19,623 2,654 186 696
Sep-04 12,370 9,861 2,065 157 287 21,911 18,313 2,735 146 716
Oct-04 12,215 9,634 2,154 167 261 19,829 16,223 2,922 159 525
Nov-04 12,601 10,046 2,070 188 296 22,066 18,119 2,960 298 688
Dec-04 13,982 11,435 2,017 194 336 24,979 21,436 2,674 197 673
Jan-05 14,619 12,017 2,090 199 313 24,362 21,017 2,572 209 564
Feb-05 12,732 10,393 1,913 153 272 22,322 18,804 2,740 226 552
Mar-05 13,494 10,953 2,070 181 290 22,724 19,254 2,719 203 549
Apr-05 11,828 9,388 1,989 180 270 19,343 15,803 2,807 261 472
May-05 11,745 9,333 1,989 175 248 19,007 15,601 2,717 152 537
Jun-05 13,499 11,095 1,907 170 327 26,157 22,576 2,531 206 844
Jul-05 14,094 11,642 1,879 192 382 26,160 22,568 2,346 242 1,004
Aug-05 14,031 11,408 2,030 208 385 25,816 22,175 2,551 220 871
Sep-05 12,553 10,025 1,983 197 348 23,914 20,326 2,523 216 849
Oct-05 12,187 9,837 1,904 177 269 20,752 17,584 2,441 178 548
Nov-05 12,441 10,179 1,831 165 265 22,564 19,399 2,475 173 516
Table 3.3.3: Monthly Consumption by Market Participant Type IESO_REP_0549v1.0 May 25, 2009
Monthly Energy Demand (GWh) Monthly Peak Demand (MW)
Month Energy LDC Wholesale Generator Peak LDC Wholesale Generator
Losses Losses
Demand Consumption Consumption Consumption Demand Consumption Consumption Consumption
Dec-05 13,746 11,401 1,858 197 290 23,766 20,449 2,440 253 624
Jan-06 13,596 11,189 1,905 188 314 23,052 19,517 2,566 211 758
Feb-06 12,568 10,422 1,719 164 264 22,321 18,776 2,564 239 742
Mar-06 13,200 10,803 1,939 174 284 21,772 18,517 2,514 178 563
Apr-06 11,513 9,216 1,861 154 282 19,582 16,273 2,582 160 566
May-06 11,927 9,647 1,868 177 236 24,857 21,637 2,426 238 555
Jun-06 12,542 10,216 1,875 194 257 23,349 20,092 2,403 177 677
Jul-06 13,854 11,539 1,829 189 297 26,092 22,659 2,401 185 846
Aug-06 13,308 10,969 1,896 169 273 27,005 23,692 2,417 171 725
Sep-06 11,521 9,386 1,783 166 186 19,976 16,913 2,476 175 411
Oct-06 11,962 9,830 1,740 156 237 19,590 16,641 2,380 188 380
Nov-06 12,179 10,019 1,730 169 261 21,267 18,174 2,309 204 580
Dec-06 12,884 10,733 1,707 163 281 22,941 19,843 2,278 205 614
Jan-07 13,758 11,458 1,822 163 315 23,537 20,348 2,419 186 585
Feb-07 13,038 11,013 1,619 143 262 23,935 20,817 2,397 165 556
Mar-07 13,193 10,932 1,833 180 248 22,969 19,853 2,430 260 426
Apr-07 11,828 9,669 1,776 166 217 20,016 16,637 2,708 161 510
May-07 11,819 9,590 1,804 203 223 21,490 18,296 2,328 235 631
Jun-07 12,693 10,503 1,730 186 274 25,737 22,456 2,390 177 713
Jul-07 12,841 10,640 1,719 189 293 24,561 21,452 2,319 198 592
Aug-07 13,455 11,203 1,742 200 310 25,584 22,534 2,090 230 730
Sep-07 11,916 9,815 1,676 185 240 24,046 20,802 2,329 196 719
Oct-07 11,908 9,826 1,715 149 218 19,233 16,498 2,222 132 381
Nov-07 12,350 10,288 1,677 170 216 21,814 19,068 2,106 159 481
Dec-07 13,408 11,284 1,674 172 278 22,935 19,832 2,264 206 633
Jan-08 13,610 11,444 1,728 167 271 22,782 19,741 2,262 188 591
Feb-08 12,897 10,838 1,633 148 277 23,054 19,965 2,353 165 570
Mar-08 13,004 10,838 1,720 174 272 20,990 17,992 2,208 217 573
Apr-08 11,520 9,367 1,699 152 302 19,512 16,520 2,329 195 468
May-08 11,407 9,211 1,732 162 301 18,650 15,581 2,442 171 456
Jun-08 12,189 9,971 1,736 171 312 24,195 21,005 2,351 182 658
Jul-08 13,156 10,881 1,770 178 326 23,787 20,806 2,205 153 623
Aug-08 12,549 10,287 1,787 174 301 22,707 19,432 2,305 232 738
Sep-08 11,793 9,611 1,755 171 256 22,975 20,070 2,235 161 509
Oct-08 11,634 9,612 1,645 165 213 19,366 16,616 2,122 188 440
Nov-08 11,829 9,990 1,418 180 242 21,279 18,303 1,833 228 916
Dec-08 13,088 11,171 1,413 192 312 22,541 19,769 1,888 199 685
Jan-09 13,730 11,752 1,506 185 288 22,983 20,228 1,948 244 563
Feb-09 11,698 10,038 1,242 160 255 22,110 19,489 1,762 191 667
Mar-09 12,167 10,357 1,375 159 276 21,466 19,038 1,734 197 497
Apr-09 10,747 9,091 1,224 202 229 18,744 16,209 1,774 189 572
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Table 3.3.4: Economic Assumptions IESO_REP_0549v1.0 May 25, 2009
Ontario Employment Ontario Housing Starts Ontario Growth Index
Year
Annual Annual Annual
Thousands Thousands Index
Growth (%) Growth (%) Growth (%)
1995 5,098 2.0 31.9 -23.3 1.025 1.42
1996 5,161 1.2 39.5 23.9 1.036 1.05
1997 5,277 2.3 50.0 26.5 1.054 1.69
1998 5,440 3.1 50.1 0.2 1.077 2.18
1999 5,621 3.3 62.9 25.6 1.102 2.34
2000 5,801 3.2 67.4 7.1 1.128 2.39
2001 5,924 2.1 70.3 4.2 1.150 1.88
2002 6,014 1.5 79.6 13.3 1.169 1.65
2003 6,203 3.1 80.9 1.7 1.198 2.49
2004 6,310 1.7 79.9 -1.3 1.219 1.78
2005 6,390 1.3 73.2 -8.4 1.237 1.49
2006 6,485 1.5 67.8 -7.4 1.256 1.53
2007 6,585 1.6 62.8 -7.4 1.275 1.47
2008 6,686 1.5 71.9 14.6 1.294 1.50
2009 (f) 6,501 -2.8 47.5 -34.0 1.284 -0.79
2010 (f) 6,505 0.1 49.4 4.0 1.291 0.54
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Table 3.3.5: Weather Scenarios IESO_REP_0549v1.0 May 25, 2009
Normal Peak Normal Average Extreme Peak
Week Ending Normal Peak Date Extreme Peak Date
Temperature (°C) Temperature (°C) Temperature (°C)
4-Jan-09 28-Dec-99 -4.3 -0 26-Dec-93 -17.0
11-Jan-09 10-Jan-79 -8.8 -5 26-Jan-94 -17.7
18-Jan-09 21-Jan-91 -13.5 -7 15-Jan-94 -21.4
25-Jan-09 9-Jan-78 -13.0 -10 10-Jan-82 -15.8
1-Feb-09 11-Jan-79 -8.7 -1 16-Jan-94 -13.8
8-Feb-09 15-Feb-91 -13.5 -2 5-Feb-95 -17.6
15-Feb-09 29-Feb-92 -8.7 -2 6-Feb-95 -15.4
22-Feb-09 4-Feb-89 -7.5 -7 11-Feb-79 -17.2
1-Mar-09 26-Feb-86 -8.0 -1 13-Feb-79 -17.0
8-Mar-09 8-Mar-95 -5.5 -0.2 3-Mar-03 -14.3
15-Mar-09 12-Mar-01 -2.4 -2.1 12-Mar-84 -11.3
22-Mar-09 24-Mar-90 -1.5 -0.1 20-Mar-86 -11.1
29-Mar-09 25-Mar-80 2.5 1.5 25-Mar-02 -3.5
5-Apr-09 8-Apr-00 0.2 0.1 6-Apr-82 -7.4
12-Apr-09 15-Apr-88 5.0 3.1 7-Apr-03 -2.0
19-Apr-09 20-Apr-78 3.4 1.2 17-Apr-02 28.2
26-Apr-09 28-Apr-79 6.0 0.6 27-Apr-90 29.4
3-May-09 1-May-79 7.1 4.8 6-May-00 30.1
10-May-09 11-May-90 11.4 7.6 9-May-79 29.7
17-May-09 21-May-06 8.7 7.0 19-May-96 28.8
24-May-09 26-May-89 24.8 21.5 23-May-75 27.8
31-May-09 31-May-85 23.5 10.3 30-May-06 32.8
7-Jun-09 25-Jun-90 25.6 21.7 24-Jun-05 34.0
14-Jun-09 22-Jun-06 30.6 7.9 16-Jun-94 32.5
21-Jun-09 9-Jun-84 29.3 9.0 18-Jun-94 35.2
28-Jun-09 9-Jun-04 31.3 20.2 17-Jun-94 32.6
5-Jul-09 21-Jul-78 29.2 11.2 16-Jul-99 33.8
12-Jul-09 8-Jul-94 29.6 12.6 3-Jul-02 34.7
19-Jul-09 6-Jul-93 30.2 11.7 14-Jul-95 36.7
26-Jul-09 7-Jul-81 30.9 15.5 1-Jul-02 35.1
2-Aug-09 13-Jul-98 29.8 28.7 4-Jul-02 31.8
9-Aug-09 6-Aug-83 30.8 13.3 1-Aug-06 36.4
16-Aug-09 15-Aug-78 28.9 7.6 2-Aug-06 33.1
23-Aug-09 2-Aug-00 27.5 12.3 14-Aug-88 33.5
30-Aug-09 5-Aug-96 28.0 11.3 5-Aug-88 31.4
6-Sep-09 8-Sep-91 26.1 22.3 3-Sep-73 32.8
13-Sep-09 11-Sep-78 29.6 0.0 9-Sep-02 33.5
20-Sep-09 21-Sep-80 26.8 17.3 16-Sep-91 31.2
27-Sep-09 27-Sep-94 19.5 15.7 22-Sep-70 26.7
4-Oct-09 30-Sep-92 9.5 0.2 1-Oct-02 28.8
11-Oct-09 7-Oct-81 9.5 9.5 12-Oct-88 4.6
18-Oct-09 17-Oct-03 9.8 0.6 20-Oct-74 2.2
25-Oct-09 29-Oct-83 5.6 3.5 26-Oct-79 2.5
1-Nov-09 30-Oct-92 4.0 1.7 7-Nov-93 2.6
8-Nov-09 11-Nov-79 3.8 1.5 12-Nov-95 0.5
15-Nov-09 20-Nov-93 1.0 0.9 13-Nov-86 -4.2
22-Nov-09 22-Nov-97 -2.0 -0.2 21-Nov-87 -8.0
29-Nov-09 30-Nov-86 -2.0 -0.6 3-Dec-89 -9.2
6-Dec-09 30-Dec-81 -4.1 -1.3 15-Dec-89 -8.5
13-Dec-09 16-Dec-02 -7.1 -1.8 14-Dec-89 -10.1
20-Dec-09 8-Dec-02 -1.4 -0.1 8-Dec-76 -11.1
27-Dec-09 13-Dec-82 -1.1 -1.1 26-Dec-83 -12.9
3-Jan-10 28-Dec-99 -4.3 -2.7 26-Dec-93 -17.0
10-Jan-10 10-Jan-79 -8.8 -3.5 26-Jan-94 -17.7
17-Jan-10 21-Jan-91 -13.5 -9.1 15-Jan-94 -21.4
24-Jan-10 9-Jan-78 -13.0 -11.1 10-Jan-82 -15.8
31-Jan-10 11-Jan-79 -8.7 -2.7 16-Jan-94 -13.8
7-Feb-10 15-Feb-91 -13.5 -4.8 5-Feb-95 -17.6
14-Feb-10 29-Feb-92 -8.7 -0.5 6-Feb-95 -15.4
21-Feb-10 4-Feb-89 -7.5 -1.2 11-Feb-79 -17.2
Table 3.3.5: Weather Scenarios IESO_REP_0549v1.0 May 25, 2009
Normal Peak Normal Average Extreme Peak
Week Ending Normal Peak Date Extreme Peak Date
Temperature (°C) Temperature (°C) Temperature (°C)
28-Feb-10 26-Feb-86 -8.0 -4.1 13-Feb-79 -17.0
7-Mar-10 8-Mar-95 -5.5 -2.4 3-Mar-03 -14.3
14-Mar-10 12-Mar-01 -2.4 -1.5 12-Mar-84 -11.3
21-Mar-10 24-Mar-90 -1.5 -0.3 20-Mar-86 -11.1
28-Mar-10 25-Mar-80 2.5 0.7 25-Mar-02 -3.5
4-Apr-10 8-Apr-00 0.2 0.1 6-Apr-82 -7.4
11-Apr-10 15-Apr-88 5.0 4.1 7-Apr-03 -2.0
18-Apr-10 20-Apr-78 3.4 0.8 17-Apr-02 28.2
25-Apr-10 28-Apr-79 6.0 5.3 27-Apr-90 29.4
2-May-10 1-May-79 7.1 4.5 6-May-00 30.1
9-May-10 11-May-90 11.4 3.5 9-May-79 29.7
16-May-10 21-May-06 8.7 8.0 19-May-96 28.8
23-May-10 26-May-89 24.8 3.5 23-May-75 27.8
30-May-10 31-May-85 23.5 2.3 30-May-06 32.8
6-Jun-10 25-Jun-90 25.6 16.0 24-Jun-05 34.0
13-Jun-10 22-Jun-06 30.6 18.7 16-Jun-94 32.5
20-Jun-10 9-Jun-84 29.3 12.2 18-Jun-94 35.2
27-Jun-10 9-Jun-04 31.3 16.9 17-Jun-94 32.6
4-Jul-10 21-Jul-78 29.2 9.2 16-Jul-99 33.8
11-Jul-10 8-Jul-94 29.6 26.9 3-Jul-02 34.7
18-Jul-10 6-Jul-93 30.2 3.8 14-Jul-95 36.7
25-Jul-10 7-Jul-81 30.9 10.7 1-Jul-02 35.1
1-Aug-10 13-Jul-98 29.8 16.5 4-Jul-02 31.8
8-Aug-10 6-Aug-83 30.8 21.8 1-Aug-06 36.4
15-Aug-10 15-Aug-78 28.9 11.0 2-Aug-06 33.1
22-Aug-10 2-Aug-00 27.5 9.5 14-Aug-88 33.5
29-Aug-10 5-Aug-96 28.0 18.7 5-Aug-88 31.4
5-Sep-10 8-Sep-91 26.1 21.5 3-Sep-73 32.8
12-Sep-10 11-Sep-78 29.6 13.2 9-Sep-02 33.5
19-Sep-10 21-Sep-80 26.8 14.1 16-Sep-91 31.2
26-Sep-10 27-Sep-94 19.5 9.6 22-Sep-70 26.7
3-Oct-10 30-Sep-92 9.5 7.3 1-Oct-02 28.8
10-Oct-10 7-Oct-81 9.5 5.7 12-Oct-88 4.6
17-Oct-10 17-Oct-03 9.8 8.2 20-Oct-74 2.2
24-Oct-10 29-Oct-83 5.6 5.0 26-Oct-79 2.5
31-Oct-10 30-Oct-92 4.0 3.6 7-Nov-93 2.6
7-Nov-10 11-Nov-79 3.8 3.6 12-Nov-95 0.5
14-Nov-10 20-Nov-93 1.0 0.0 13-Nov-86 -4.2
21-Nov-10 22-Nov-97 -2.0 -1.6 21-Nov-87 -8.0
28-Nov-10 30-Nov-86 -2.0 -1.5 3-Dec-89 -9.2
5-Dec-10 30-Dec-81 -4.1 -1.5 15-Dec-89 -8.5
12-Dec-10 16-Dec-02 -7.1 -2.2 14-Dec-89 -10.1
19-Dec-10 8-Dec-02 -1.4 -1.1 8-Dec-76 -11.1
26-Dec-10 13-Dec-82 -1.1 -0.6 26-Dec-83 -12.9
2-Jan-11 28-Dec-99 -4.3 -0.6 26-Dec-93 -17.0
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Table 4.1: Existing Installed Generation Resources IESO_REP_0549v1.0 May 25, 2009
Total Change in
Number of Change in
Fuel Type Capacity Capacity
Stations Stations
(MW) (MW)
Nuclear 11,426 5 0 0
Hydroelectric 7,835 69 12 0
Coal 6,434 4 0 0
Oil / Gas 7,582 25 923 1
Wind 704 6 0 0
Biomass / Landfill Gas 75 5 0 0
Total 34,056 114 935 1
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Table 4.2: Committed and Contracted Generation Resources IESO_REP_0549v1.0 May 25, 2009
Estimated Capacity Considered
Proponent/Project Name Zone Fuel Type Effective Change Project Status in Scenario
Date (MW)
Firm Planned
Lac Seul Hydroelectric Project Northwest Water In-Service
Portlands Energy Centre Combined Cycle Operation Toronto Gas In-Service
LaSalle Recreation Centre West Oil 2009-Q2 Commissioning 1 1
St. Clair Energy Centre West Gas In-Service
Goreway Station Project Toronto Gas 2009-Q2 Commissioning 839 839
Algoma Energy Cogeneration Facility Northeast By-Product Gas 2009-Q2 Construction 63 63
Enbridge Ontario Wind Farm (formerly Underwood WGS or Southwest Wind 2009-Q2 Commissioning 182 182
LeaderIsland Wind Project
Wolfe Wind Power Projects) East Wind 2009-Q3 Construction 198 198
Nuclear Upgrade N/A Uranium 2009-Q3 Construction 27 27
East Windsor Cogeneration Centre West Gas 2009-Q3 Construction 84
Retirement of Wawaitin 25 Hz generation to convert to 60 Northeast Water 2010-Q1 Connection Assessment -11 -11
Hz
Thorold Cogeneration Project Niagara Gas 2010-Q2 Construction 236
Healey Falls East Water 2010-Q2 Construction 16
Bruce Unit 2 Bruce Uranium 2010-Q3 Delayed Construction 750
Raleigh Wind Energy Centre West Wind 2010-Q3 Approvals & Permits 78
Halton Hills Generating Station Southwest Gas 2010-Q3 Construction 632
Bruce Unit 1 Bruce Uranium 2010-Q4 Delayed Construction 750
Total 1,299 3,845
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Table 4.3: Summary of Scenario Assumptions IESO_REP_0549v1.0 May 25, 2009
Assumptions Planned Scenario Firm Scenario
Existing Installed Total Capacity Total Capacity
Resources 34,056 MW 34,056 MW
Resource
Only Capacity Changes,
Commissioning Generators and
New Generation and All
Generators starting in the first 3
Capacity Changes months
3,845 MW 1,299 MW
Incremental
Conservation
Demand Forecast
Incremental growth of 215 MW at time of peak
Incremental
Embedded Generation
Incremental growth of 145 MW at time of peak
Incremental Existing
Demand Measures
624 MW 375 MW
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Table 4.4: Summary of Available Resources IESO_REP_0549v1.0 May 25, 2009
Summer Peak 2009 Winter Peak 2010 Summer Peak 2010
Firm Planned Firm Planned Firm Planned
Notes Description
Scenario Scenario Scenario Scenario Scenario Scenario
1 Installed Resources (MW) 35,338 35,338 35,365 35,449 35,355 36,519
2 Imports (MW) 0 0 0 0 0 0
3 Total Resources (MW) 35,338 35,338 35,365 35,449 35,355 36,519
4 Total Reductions in Resources (MW) 6,148 6,148 5,957 6,041 6,250 6,958
5 Demand Measures (MW) 375 516 375 624 375 647
6 Available Resources (MW) 29,566 29,706 29,784 30,033 29,480 30,208
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Table A1: Assessment of Resource Adequacy: Normal Weather, Firm Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Jun-09 20,071 35,141 10,413 375 25,103 22,844 25.1 5,032 13.8 2,773 2,259
14-Jun-09 22,391 35,141 9,672 375 25,844 25,520 15.4 3,453 14.0 3,129 324
21-Jun-09 23,173 35,141 9,379 375 26,137 26,555 12.8 2,964 14.6 3,382 -418
28-Jun-09 22,897 35,141 9,071 375 26,445 26,455 15.5 3,548 15.5 3,558 -10
5-Jul-09 21,891 35,141 8,910 375 26,606 25,039 21.5 4,715 14.4 3,148 1,567
12-Jul-09 23,802 35,338 6,496 375 29,218 27,304 22.8 5,416 14.7 3,502 1,914
19-Jul-09 24,351 35,338 6,148 375 29,566 28,045 21.4 5,215 15.2 3,694 1,521
26-Jul-09 23,542 35,338 6,225 375 29,489 27,012 25.3 5,947 14.7 3,470 2,477
2-Aug-09 22,705 35,338 6,472 375 29,242 26,040 28.8 6,537 14.7 3,335 3,202
9-Aug-09 23,670 35,338 5,928 375 29,786 27,242 25.8 6,116 15.1 3,572 2,544
16-Aug-09 23,375 35,338 6,429 375 29,285 26,879 25.3 5,910 15.0 3,504 2,406
23-Aug-09 22,520 35,338 6,518 375 29,196 25,857 29.6 6,676 14.8 3,337 3,339
30-Aug-09 22,907 35,338 6,931 375 28,783 26,083 25.7 5,876 13.9 3,176 2,700
6-Sep-09 21,388 35,365 8,377 375 27,364 25,152 27.9 5,976 17.6 3,764 2,212
13-Sep-09 20,686 35,365 9,904 375 25,837 24,295 24.9 5,151 17.5 3,609 1,542
20-Sep-09 19,919 35,365 10,427 375 25,314 23,200 27.1 5,395 16.5 3,281 2,114
27-Sep-09 19,173 35,365 10,732 375 25,009 21,990 30.4 5,836 14.7 2,817 3,019
4-Oct-09 18,733 35,365 10,381 375 25,360 21,545 35.4 6,627 15.0 2,812 3,815
11-Oct-09 18,640 35,365 10,267 375 25,474 21,373 36.7 6,834 14.7 2,733 4,101
18-Oct-09 18,977 35,365 10,329 375 25,412 21,761 33.9 6,435 14.7 2,784 3,651
25-Oct-09 19,411 35,365 10,044 375 25,697 22,225 32.4 6,286 14.5 2,814 3,472
1-Nov-09 19,980 35,365 10,585 375 25,156 22,796 25.9 5,176 14.1 2,816 2,360
8-Nov-09 20,200 35,365 10,064 375 25,677 22,906 27.1 5,477 13.4 2,706 2,771
15-Nov-09 20,695 35,365 9,606 375 26,135 23,556 26.3 5,440 13.8 2,861 2,579
22-Nov-09 21,060 35,365 11,055 375 24,686 23,928 17.2 3,626 13.6 2,868 758
29-Nov-09 21,106 35,365 10,540 375 25,201 23,658 19.4 4,095 12.1 2,552 1,543
6-Dec-09 21,575 35,365 8,840 375 26,901 24,608 24.7 5,326 14.1 3,033 2,293
13-Dec-09 21,883 35,365 7,917 375 27,824 24,872 27.2 5,941 13.7 2,989 2,952
20-Dec-09 21,808 35,365 8,095 375 27,646 24,916 26.8 5,838 14.3 3,108 2,730
27-Dec-09 21,162 35,365 7,907 375 27,834 24,255 31.5 6,672 14.6 3,093 3,579
3-Jan-10 21,487 35,365 7,436 375 28,305 24,497 31.7 6,818 14.0 3,010 3,808
10-Jan-10 22,383 35,365 6,278 375 29,463 25,551 31.6 7,080 14.2 3,168 3,912
17-Jan-10 22,510 35,365 6,250 375 29,491 25,818 31.0 6,981 14.7 3,308 3,673
24-Jan-10 22,886 35,365 5,957 375 29,784 26,178 30.1 6,898 14.4 3,292 3,606
31-Jan-10 22,727 35,365 5,946 375 29,795 25,893 31.1 7,068 13.9 3,166 3,902
7-Feb-10 22,632 35,365 8,713 375 27,028 25,433 19.4 4,396 12.4 2,801 1,595
14-Feb-10 22,149 35,365 8,749 375 26,992 25,040 21.9 4,843 13.1 2,891 1,952
21-Feb-10 22,066 35,365 9,100 375 26,641 24,858 20.7 4,575 12.7 2,792 1,783
28-Feb-10 21,564 35,365 9,156 375 26,585 24,410 23.3 5,021 13.2 2,846 2,175
Table A1: Assessment of Resource Adequacy: Normal Weather, Firm Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Mar-10 21,536 35,355 10,019 375 25,711 24,020 19.4 4,175 11.5 2,484 1,691
14-Mar-10 20,886 35,355 9,563 375 26,167 23,756 25.3 5,281 13.7 2,870 2,411
21-Mar-10 20,486 35,355 9,621 375 26,109 23,341 27.5 5,623 13.9 2,855 2,768
28-Mar-10 19,996 35,355 9,236 375 26,494 23,004 32.5 6,498 15.0 3,008 3,490
4-Apr-10 19,595 35,355 9,824 375 25,906 22,475 32.2 6,311 14.7 2,880 3,431
11-Apr-10 19,029 35,355 8,650 375 27,080 22,151 42.3 8,051 16.4 3,122 4,929
18-Apr-10 18,557 35,355 11,825 375 23,905 21,186 28.8 5,348 14.2 2,629 2,719
25-Apr-10 18,538 35,355 11,806 375 23,924 21,171 29.1 5,386 14.2 2,633 2,753
2-May-10 17,932 35,355 11,866 375 23,864 20,744 33.1 5,932 15.7 2,812 3,120
9-May-10 18,089 35,355 14,426 375 21,304 20,710 17.8 3,215 14.5 2,621 594
16-May-10 18,628 35,355 14,479 375 21,251 20,991 14.1 2,623 12.7 2,363 260
23-May-10 19,056 35,355 14,354 375 21,376 21,964 12.2 2,320 15.3 2,908 -588
30-May-10 19,399 35,355 10,163 375 25,567 22,894 31.8 6,168 18.0 3,495 2,673
6-Jun-10 20,207 35,355 10,175 375 25,555 23,140 26.5 5,348 14.5 2,933 2,415
13-Jun-10 20,431 35,355 10,252 375 25,478 23,747 24.7 5,047 16.2 3,316 1,731
20-Jun-10 22,122 35,355 10,303 375 25,427 25,310 14.9 3,305 14.4 3,188 117
27-Jun-10 22,959 35,355 8,919 375 26,811 26,419 16.8 3,852 15.1 3,460 392
4-Jul-10 22,275 35,355 8,922 375 26,808 25,860 20.4 4,533 16.1 3,585 948
11-Jul-10 22,974 35,355 6,899 375 28,831 26,296 25.5 5,857 14.5 3,322 2,535
18-Jul-10 23,553 35,355 6,470 375 29,260 27,137 24.2 5,707 15.2 3,584 2,123
25-Jul-10 24,160 35,355 6,250 375 29,480 27,931 22.0 5,320 15.6 3,771 1,549
1-Aug-10 23,442 35,355 5,856 375 29,874 26,945 27.4 6,432 14.9 3,503 2,929
8-Aug-10 22,680 35,355 6,523 375 29,207 26,161 28.8 6,527 15.4 3,481 3,046
15-Aug-10 23,462 35,355 6,432 375 29,298 26,962 24.9 5,836 14.9 3,500 2,336
22-Aug-10 23,279 35,355 6,422 375 29,308 26,749 25.9 6,029 14.9 3,470 2,559
29-Aug-10 22,255 35,355 6,558 375 29,172 25,578 31.1 6,917 14.9 3,323 3,594
5-Sep-10 22,146 35,355 8,517 375 27,213 25,552 22.9 5,067 15.4 3,406 1,661
12-Sep-10 21,281 35,355 10,082 375 25,648 24,710 20.5 4,367 16.1 3,429 938
19-Sep-10 20,499 35,355 10,596 375 25,134 23,953 22.6 4,635 16.9 3,454 1,181
26-Sep-10 19,729 35,355 10,642 375 25,088 22,908 27.2 5,359 16.1 3,179 2,180
3-Oct-10 19,107 35,355 11,028 375 24,702 21,903 29.3 5,595 14.6 2,796 2,799
10-Oct-10 18,600 35,355 13,412 375 22,318 21,133 20.0 3,718 13.6 2,533 1,185
17-Oct-10 18,795 35,355 13,655 375 22,075 21,463 17.5 3,280 14.2 2,668 612
24-Oct-10 19,201 35,355 13,342 375 22,388 21,850 16.6 3,187 13.8 2,649 538
31-Oct-10 19,611 35,355 13,764 375 21,966 22,237 12.0 2,355 13.4 2,626 -271
7-Nov-10 19,899 35,355 11,301 375 24,429 22,593 22.8 4,530 13.5 2,694 1,836
14-Nov-10 20,251 35,355 11,179 375 24,551 22,732 21.2 4,300 12.3 2,481 1,819
21-Nov-10 20,737 35,355 9,534 375 26,196 23,433 26.3 5,459 13.0 2,696 2,763
28-Nov-10 21,029 35,355 8,626 375 27,104 24,142 28.9 6,075 14.8 3,113 2,962
Note: The reader should be aware that Security and Adequacy Assessments are published on the IESO web site on a weekly and daily basis that progressively
supersedes information presented in this report.
Back to main menu
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Table A2: Assessment of Resource Adequacy: Normal Weather, Planned Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Jun-09 20,071 35,141 10,413 516 25,244 22,844 25.8 5,173 13.8 2,773 2,400
14-Jun-09 22,391 35,141 9,672 516 25,985 25,520 16.1 3,594 14.0 3,129 465
21-Jun-09 23,173 35,141 9,379 516 26,278 26,555 13.4 3,105 14.6 3,382 -277
28-Jun-09 22,897 35,141 9,071 516 26,586 26,455 16.1 3,689 15.5 3,558 131
5-Jul-09 21,891 35,141 8,910 516 26,747 25,039 22.2 4,856 14.4 3,148 1,708
12-Jul-09 23,802 35,338 6,496 516 29,358 27,304 23.3 5,556 14.7 3,502 2,054
19-Jul-09 24,351 35,338 6,148 516 29,706 28,045 22.0 5,355 15.2 3,694 1,661
26-Jul-09 23,542 35,338 6,225 516 29,629 27,012 25.9 6,087 14.7 3,470 2,617
2-Aug-09 22,705 35,338 6,472 516 29,382 26,040 29.4 6,677 14.7 3,335 3,342
9-Aug-09 23,670 35,338 5,928 516 29,926 27,242 26.4 6,256 15.1 3,572 2,684
16-Aug-09 23,375 35,338 6,429 516 29,425 26,879 25.9 6,050 15.0 3,504 2,546
23-Aug-09 22,520 35,338 6,518 516 29,336 25,857 30.3 6,816 14.8 3,337 3,479
30-Aug-09 22,907 35,338 6,931 516 28,923 26,083 26.3 6,016 13.9 3,176 2,840
6-Sep-09 21,388 35,365 8,377 516 27,504 25,152 28.6 6,116 17.6 3,764 2,352
13-Sep-09 20,686 35,365 9,904 516 25,977 24,295 25.6 5,291 17.5 3,609 1,682
20-Sep-09 19,919 35,365 10,427 516 25,454 23,200 27.8 5,535 16.5 3,281 2,254
27-Sep-09 19,173 35,365 10,732 516 25,149 21,990 31.2 5,976 14.7 2,817 3,159
4-Oct-09 18,733 35,449 10,465 624 25,609 21,558 36.7 6,876 15.1 2,825 4,051
11-Oct-09 18,640 35,449 10,351 624 25,723 21,386 38.0 7,083 14.7 2,746 4,337
18-Oct-09 18,977 35,449 10,413 624 25,661 21,774 35.2 6,684 14.7 2,797 3,887
25-Oct-09 19,411 35,449 10,128 624 25,946 22,237 33.7 6,535 14.6 2,826 3,709
1-Nov-09 19,980 35,449 10,669 624 25,405 22,809 27.2 5,425 14.2 2,829 2,596
8-Nov-09 20,200 35,449 10,148 624 25,926 22,918 28.4 5,726 13.5 2,718 3,008
15-Nov-09 20,695 35,449 9,690 624 26,384 23,569 27.5 5,689 13.9 2,874 2,815
22-Nov-09 21,060 35,449 11,139 624 24,935 23,941 18.4 3,875 13.7 2,881 994
29-Nov-09 21,106 35,449 10,624 624 25,450 23,670 20.6 4,344 12.2 2,564 1,780
6-Dec-09 21,575 35,449 8,924 624 27,150 24,608 25.8 5,575 14.1 3,033 2,542
13-Dec-09 21,883 35,449 8,001 624 28,073 24,884 28.3 6,190 13.7 3,001 3,189
20-Dec-09 21,808 35,449 8,179 624 27,895 24,928 27.9 6,087 14.3 3,120 2,967
27-Dec-09 21,162 35,449 7,991 624 28,083 24,267 32.7 6,921 14.7 3,105 3,816
3-Jan-10 21,487 35,449 7,520 624 28,554 24,509 32.9 7,067 14.1 3,022 4,045
10-Jan-10 22,383 35,449 6,362 624 29,712 25,564 32.7 7,329 14.2 3,181 4,148
17-Jan-10 22,510 35,449 6,334 624 29,740 25,830 32.1 7,230 14.8 3,320 3,910
24-Jan-10 22,886 35,449 6,041 624 30,033 26,190 31.2 7,147 14.4 3,304 3,843
31-Jan-10 22,727 35,449 6,030 624 30,044 25,905 32.2 7,317 14.0 3,178 4,139
7-Feb-10 22,632 35,449 8,797 624 27,277 25,445 20.5 4,645 12.4 2,813 1,832
14-Feb-10 22,149 35,449 8,833 624 27,241 25,044 23.0 5,092 13.1 2,895 2,197
21-Feb-10 22,066 35,449 9,184 624 26,890 24,858 21.9 4,824 12.7 2,792 2,032
28-Feb-10 21,564 35,449 9,240 624 26,834 24,410 24.4 5,270 13.2 2,846 2,424
Table A2: Assessment of Resource Adequacy: Normal Weather, Planned Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Mar-10 21,536 35,439 10,103 624 25,960 24,033 20.5 4,424 11.6 2,497 1,927
14-Mar-10 20,886 35,439 9,647 624 26,416 23,769 26.5 5,530 13.8 2,883 2,647
21-Mar-10 20,486 35,439 9,705 624 26,358 23,354 28.7 5,872 14.0 2,868 3,004
28-Mar-10 19,996 35,439 9,320 624 26,743 23,017 33.7 6,747 15.1 3,021 3,726
4-Apr-10 19,595 35,439 9,908 624 26,155 22,487 33.5 6,560 14.8 2,892 3,668
11-Apr-10 19,029 35,439 8,734 624 27,329 22,163 43.6 8,300 16.5 3,134 5,166
18-Apr-10 18,557 35,439 11,909 624 24,154 21,199 30.2 5,597 14.2 2,642 2,955
25-Apr-10 18,538 35,439 11,890 624 24,173 21,183 30.4 5,635 14.3 2,645 2,990
2-May-10 17,932 35,439 11,950 624 24,113 20,757 34.5 6,181 15.8 2,825 3,356
9-May-10 18,089 35,439 14,510 647 21,576 20,710 19.3 3,487 14.5 2,621 866
16-May-10 18,628 35,439 14,563 647 21,523 21,002 15.5 2,895 12.7 2,374 521
23-May-10 19,056 35,439 14,438 647 21,648 21,964 13.6 2,592 15.3 2,908 -316
30-May-10 19,399 35,439 10,247 647 25,839 22,906 33.2 6,440 18.1 3,507 2,933
6-Jun-10 20,207 35,439 10,259 647 25,827 23,152 27.8 5,620 14.6 2,945 2,675
13-Jun-10 20,431 35,439 10,336 647 25,750 23,759 26.0 5,319 16.3 3,328 1,991
20-Jun-10 22,122 35,439 10,387 647 25,699 25,322 16.2 3,577 14.5 3,200 377
27-Jun-10 22,959 35,439 9,003 647 27,083 26,431 18.0 4,124 15.1 3,472 652
4-Jul-10 22,275 35,439 8,826 647 27,260 25,872 22.4 4,985 16.2 3,597 1,388
11-Jul-10 22,974 36,441 7,541 647 29,547 26,392 28.6 6,573 14.9 3,418 3,155
18-Jul-10 23,553 36,519 7,197 647 29,969 27,230 27.2 6,416 15.6 3,677 2,739
25-Jul-10 24,160 36,519 6,958 647 30,208 28,022 25.0 6,048 16.0 3,862 2,186
1-Aug-10 23,442 36,519 6,572 647 30,594 27,040 30.5 7,152 15.4 3,598 3,554
8-Aug-10 22,680 36,519 7,247 647 29,919 26,254 31.9 7,239 15.8 3,574 3,665
15-Aug-10 23,462 36,519 7,153 647 30,013 27,055 27.9 6,551 15.3 3,593 2,958
22-Aug-10 23,279 36,519 7,147 647 30,019 26,843 29.0 6,740 15.3 3,564 3,176
29-Aug-10 22,255 36,519 7,291 647 29,875 25,674 34.2 7,620 15.4 3,419 4,201
5-Sep-10 22,146 36,519 9,437 647 27,729 25,644 25.2 5,583 15.8 3,498 2,085
12-Sep-10 21,281 36,519 10,997 647 26,169 24,801 23.0 4,888 16.5 3,520 1,368
19-Sep-10 20,499 36,519 11,511 647 25,655 24,043 25.2 5,156 17.3 3,544 1,612
26-Sep-10 19,729 36,519 11,557 647 25,609 23,000 29.8 5,880 16.6 3,271 2,609
3-Oct-10 19,107 36,519 11,490 624 25,653 22,001 34.3 6,546 15.2 2,894 3,652
10-Oct-10 18,600 37,901 13,585 624 24,940 21,343 34.1 6,340 14.8 2,743 3,597
17-Oct-10 18,795 37,901 13,828 624 24,697 21,670 31.4 5,902 15.3 2,875 3,027
24-Oct-10 19,201 37,901 13,515 624 25,010 22,059 30.3 5,809 14.9 2,858 2,951
31-Oct-10 19,611 37,901 13,938 624 24,587 22,442 25.4 4,976 14.4 2,831 2,145
7-Nov-10 19,899 37,901 12,526 624 25,999 22,718 30.7 6,100 14.2 2,819 3,281
14-Nov-10 20,251 37,901 12,295 624 26,230 22,900 29.5 5,979 13.1 2,649 3,330
21-Nov-10 20,737 37,901 10,999 624 27,526 23,636 32.7 6,789 14.0 2,899 3,890
28-Nov-10 21,029 37,901 10,092 624 28,433 24,338 35.2 7,404 15.7 3,309 4,095
Note: The reader should be aware that Security and Adequacy Assessments are published on the IESO web site on a weekly and daily basis that progressively
supersedes information presented in this report.
Back to main menu
Back to main menu
Table A3: Zonal Bottled Generation: Normal Weather, Both Scenarios IESO_REP_0549v1.0 May 25, 2009
Week Firm Scenario Planned Scenario
Ending Bruce & West Northeast Northwest Bruce & West Northeast Northwest
Day MW MW MW MW MW MW
7-Jun-09 104 5 211 104 5 211
14-Jun-09 337 0 399 337 0 399
21-Jun-09 849 0 390 849 0 390
28-Jun-09 926 41 405 926 41 405
5-Jul-09 1,501 22 440 1,501 22 440
12-Jul-09 1,359 77 338 1,359 77 338
19-Jul-09 1,033 59 333 1,033 59 333
26-Jul-09 1,090 94 318 1,090 94 318
2-Aug-09 1,360 62 327 1,360 62 327
9-Aug-09 1,129 0 277 1,129 0 277
16-Aug-09 1,139 0 288 1,139 0 288
23-Aug-09 1,232 0 284 1,232 0 284
30-Aug-09 1,217 0 286 1,217 0 286
6-Sep-09 928 0 117 928 0 117
13-Sep-09 496 0 125 496 0 125
20-Sep-09 502 0 4 502 0 4
27-Sep-09 72 0 0 72 0 0
4-Oct-09 789 0 8 873 0 8
11-Oct-09 933 0 0 1,017 0 0
18-Oct-09 903 0 0 987 0 0
25-Oct-09 464 0 41 548 0 41
1-Nov-09 446 0 0 530 0 0
8-Nov-09 1,061 0 24 1,145 0 24
15-Nov-09 1,021 0 46 1,105 0 46
22-Nov-09 1,987 0 240 2,071 0 240
29-Nov-09 1,550 0 162 1,634 0 162
6-Dec-09 1,550 0 282 1,634 0 282
13-Dec-09 1,451 0 312 1,535 0 312
20-Dec-09 2,186 0 325 2,270 0 325
27-Dec-09 2,446 0 393 2,530 0 393
3-Jan-10 2,401 0 373 2,485 0 373
10-Jan-10 2,294 0 241 2,378 0 241
17-Jan-10 2,243 0 265 2,327 0 265
24-Jan-10 2,028 0 272 2,112 0 272
31-Jan-10 1,282 0 252 1,366 0 252
7-Feb-10 1,251 0 288 1,335 0 288
14-Feb-10 1,285 0 292 1,369 0 292
21-Feb-10 1,219 0 268 1,303 0 268
28-Feb-10 742 0 296 826 0 296
Table A3: Zonal Bottled Generation: Normal Weather, Both Scenarios IESO_REP_0549v1.0 May 25, 2009
Week Firm Scenario Planned Scenario
Ending Bruce & West Northeast Northwest Bruce & West Northeast Northwest
Day MW MW MW MW MW MW
7-Mar-10 770 0 325 854 0 325
14-Mar-10 800 0 319 884 0 319
21-Mar-10 854 0 324 938 0 324
28-Mar-10 891 0 341 975 0 341
4-Apr-10 753 0 353 837 0 353
11-Apr-10 1,599 0 377 1,683 0 377
18-Apr-10 1,599 0 392 1,683 0 392
25-Apr-10 1,671 0 386 1,755 0 386
2-May-10 364 0 363 448 0 363
9-May-10 307 50 347 391 50 347
16-May-10 278 133 346 362 133 346
23-May-10 102 144 387 186 144 387
30-May-10 679 83 357 763 83 357
6-Jun-10 482 83 345 566 83 345
13-Jun-10 596 110 329 680 110 329
20-Jun-10 1,479 122 319 1,563 122 319
27-Jun-10 1,388 125 330 1,472 125 330
4-Jul-10 1,431 166 380 1,335 166 380
11-Jul-10 1,279 139 324 1,925 139 324
18-Jul-10 1,394 111 322 2,048 111 322
25-Jul-10 1,199 88 320 1,834 88 320
1-Aug-10 1,223 129 301 1,866 129 301
8-Aug-10 1,355 12 290 2,001 12 290
15-Aug-10 1,300 0 267 1,942 0 267
22-Aug-10 1,282 0 274 1,929 0 274
29-Aug-10 1,409 0 283 2,064 0 283
5-Sep-10 742 0 53 1,587 0 53
12-Sep-10 864 0 0 1,709 0 0
19-Sep-10 899 0 0 1,743 0 0
26-Sep-10 944 0 0 1,789 0 0
3-Oct-10 513 0 0 904 0 0
10-Oct-10 802 0 0 904 0 0
17-Oct-10 1,415 0 0 1,517 0 0
24-Oct-10 1,362 0 0 1,464 0 0
31-Oct-10 1,345 0 0 1,446 0 0
7-Nov-10 357 0 5 1,513 0 5
14-Nov-10 308 0 90 1,355 0 90
21-Nov-10 707 0 327 2,104 0 327
28-Nov-10 1,301 0 323 2,697 0 323
Note: The bottled generation values indicated in the table are capacity values calculated at the hour of weekly peak.
In real time operation, the actual amount of bottled generation will depend on many conditions prevailing at the time,
including the local generation levels, overall generation dispatch and the direction and levels of flows into and out of
Ontario.
Zonal information is found on page 6 of the Ontario Transmission System document.
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Table A4: Assessment of Resource Adequacy: Extreme Weather, Firm Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Jun-09 23,604 35,141 10,307 375 25,209 26,282 6.8 1,605 11.4 2,678 -1,073
14-Jun-09 24,678 35,141 9,501 375 26,015 27,612 5.4 1,337 11.9 2,934 -1,597
21-Jun-09 25,640 35,141 9,052 375 26,464 28,686 3.2 824 11.9 3,046 -2,222
28-Jun-09 25,457 35,141 8,650 375 26,866 28,500 5.5 1,409 12.0 3,043 -1,634
5-Jul-09 24,012 35,141 8,630 375 26,886 26,694 12.0 2,874 11.2 2,682 192
12-Jul-09 25,580 35,338 6,239 375 29,475 28,519 15.2 3,895 11.5 2,939 956
19-Jul-09 26,454 35,338 5,892 375 29,822 29,446 12.7 3,368 11.3 2,992 376
26-Jul-09 25,664 35,338 5,967 375 29,747 28,603 15.9 4,083 11.5 2,939 1,144
2-Aug-09 24,408 35,338 6,057 375 29,657 27,347 21.5 5,249 12.0 2,939 2,310
9-Aug-09 26,409 35,338 5,593 375 30,121 29,445 14.1 3,712 11.5 3,036 676
16-Aug-09 25,839 35,338 6,057 375 29,657 28,808 14.8 3,818 11.5 2,969 849
23-Aug-09 25,002 35,338 6,248 375 29,466 27,971 17.9 4,464 11.9 2,969 1,495
30-Aug-09 25,194 35,338 6,648 375 29,066 28,081 15.4 3,872 11.5 2,887 985
6-Sep-09 25,362 35,365 7,962 375 27,779 28,416 9.5 2,417 12.0 3,054 -637
13-Sep-09 25,154 35,365 9,676 375 26,065 28,283 3.6 911 12.4 3,129 -2,218
20-Sep-09 24,411 35,365 10,271 375 25,470 27,423 4.3 1,059 12.3 3,012 -1,953
27-Sep-09 23,016 35,365 10,660 375 25,081 25,729 9.0 2,065 11.8 2,713 -648
4-Oct-09 23,064 35,365 10,055 375 25,686 25,822 11.4 2,622 12.0 2,758 -136
11-Oct-09 19,885 35,365 10,087 375 25,654 22,441 29.0 5,769 12.9 2,556 3,213
18-Oct-09 20,130 35,365 10,223 375 25,518 22,707 26.8 5,388 12.8 2,577 2,811
25-Oct-09 20,390 35,365 9,903 375 25,838 22,865 26.7 5,448 12.1 2,475 2,973
1-Nov-09 20,854 35,365 10,437 375 25,304 23,272 21.3 4,450 11.6 2,418 2,032
8-Nov-09 21,183 35,365 9,879 375 25,862 23,632 22.1 4,679 11.6 2,449 2,230
15-Nov-09 21,924 35,365 9,362 375 26,379 24,494 20.3 4,455 11.7 2,570 1,885
22-Nov-09 22,471 35,365 10,888 375 24,853 24,882 10.6 2,382 10.7 2,411 -29
29-Nov-09 22,932 35,365 10,359 375 25,382 25,376 10.7 2,450 10.7 2,444 6
6-Dec-09 23,093 35,365 8,644 375 27,097 25,770 17.3 4,004 11.6 2,677 1,327
13-Dec-09 23,190 35,365 7,732 375 28,009 25,952 20.8 4,819 11.9 2,762 2,057
20-Dec-09 22,968 35,365 7,862 375 27,879 25,885 21.4 4,911 12.7 2,917 1,994
27-Dec-09 22,251 35,365 7,701 375 28,040 25,203 26.0 5,789 13.3 2,952 2,837
3-Jan-10 22,732 35,365 7,297 375 28,444 25,650 25.1 5,712 12.8 2,918 2,794
10-Jan-10 23,353 35,365 6,206 375 29,535 26,438 26.5 6,182 13.2 3,085 3,097
17-Jan-10 23,692 35,365 6,113 375 29,628 26,777 25.1 5,936 13.0 3,085 2,851
24-Jan-10 24,046 35,365 5,852 375 29,889 27,129 24.3 5,843 12.8 3,083 2,760
31-Jan-10 23,978 35,365 5,794 375 29,947 27,017 24.9 5,969 12.7 3,039 2,930
7-Feb-10 23,865 35,365 8,672 375 27,069 26,540 13.4 3,204 11.2 2,675 529
14-Feb-10 23,429 35,365 8,612 375 27,129 26,104 15.8 3,700 11.4 2,675 1,025
21-Feb-10 23,175 35,365 8,964 375 26,777 25,750 15.5 3,602 11.1 2,575 1,027
28-Feb-10 22,831 35,365 9,081 375 26,660 25,262 16.8 3,829 10.7 2,431 1,398
Table A4: Assessment of Resource Adequacy: Extreme Weather, Firm Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Mar-10 22,375 35,355 9,875 375 25,855 24,753 15.6 3,480 10.6 2,378 1,102
14-Mar-10 22,727 35,355 9,345 375 26,385 25,209 16.1 3,658 10.9 2,482 1,176
21-Mar-10 22,340 35,355 9,416 375 26,314 24,822 17.8 3,974 11.1 2,482 1,492
28-Mar-10 21,819 35,355 9,021 375 26,709 24,426 22.4 4,890 12.0 2,607 2,283
4-Apr-10 21,199 35,355 9,672 375 26,058 23,706 22.9 4,859 11.8 2,507 2,352
11-Apr-10 20,532 35,355 8,520 375 27,210 23,199 32.5 6,678 13.0 2,667 4,011
18-Apr-10 20,127 35,355 11,675 375 24,055 22,516 19.5 3,928 11.9 2,389 1,539
25-Apr-10 21,954 35,355 11,340 375 24,390 24,356 11.1 2,436 10.9 2,402 34
2-May-10 21,939 35,355 11,514 375 24,216 24,495 10.4 2,277 11.7 2,556 -279
9-May-10 21,697 35,355 14,083 375 21,647 24,528 -0.2 -50 13.1 2,831 -2,881
16-May-10 22,254 35,355 14,102 375 21,628 25,208 -2.8 -626 13.3 2,954 -3,580
23-May-10 21,979 35,355 14,119 375 21,611 24,891 -1.7 -368 13.3 2,912 -3,280
30-May-10 22,733 35,355 9,966 375 25,764 25,248 13.3 3,031 11.1 2,515 516
6-Jun-10 24,555 35,355 9,852 375 25,878 27,409 5.4 1,323 11.6 2,854 -1,531
13-Jun-10 23,419 35,355 9,947 375 25,783 26,014 10.1 2,364 11.1 2,595 -231
20-Jun-10 24,483 35,355 9,949 375 25,781 27,225 5.3 1,298 11.2 2,742 -1,444
27-Jun-10 25,337 35,355 8,592 375 27,138 28,281 7.1 1,801 11.6 2,944 -1,143
4-Jul-10 24,811 35,355 8,500 375 27,230 27,485 9.8 2,419 10.8 2,674 -255
11-Jul-10 24,675 35,355 6,858 375 28,872 27,559 17.0 4,197 11.7 2,884 1,313
18-Jul-10 25,404 35,355 6,139 375 29,591 28,344 16.5 4,187 11.6 2,940 1,247
25-Jul-10 26,348 35,355 5,958 375 29,772 29,309 13.0 3,424 11.2 2,961 463
1-Aug-10 25,492 35,355 5,583 375 30,147 28,515 18.3 4,655 11.9 3,023 1,632
8-Aug-10 25,507 35,355 6,098 375 29,632 28,446 16.2 4,125 11.5 2,939 1,186
15-Aug-10 26,300 35,355 6,087 375 29,643 29,283 12.7 3,343 11.3 2,983 360
22-Aug-10 25,727 35,355 6,052 375 29,678 28,666 15.4 3,951 11.4 2,939 1,012
29-Aug-10 24,850 35,355 6,238 375 29,492 27,789 18.7 4,642 11.8 2,939 1,703
5-Sep-10 24,864 35,355 8,218 375 27,512 27,769 10.7 2,648 11.7 2,905 -257
12-Sep-10 25,267 35,355 9,682 375 26,048 28,350 3.1 781 12.2 3,083 -2,302
19-Sep-10 25,020 35,355 10,242 375 25,488 28,044 1.9 468 12.1 3,024 -2,556
26-Sep-10 24,279 35,355 10,398 375 25,332 27,155 4.3 1,053 11.9 2,876 -1,823
3-Oct-10 22,902 35,355 10,939 375 24,791 25,600 8.3 1,889 11.8 2,698 -809
10-Oct-10 22,893 35,355 12,930 375 22,800 25,901 -0.4 -93 13.1 3,008 -3,101
17-Oct-10 19,868 35,355 13,488 375 22,242 22,282 12.0 2,374 12.2 2,414 -40
24-Oct-10 20,347 35,355 13,237 375 22,493 22,835 10.6 2,146 12.2 2,488 -342
31-Oct-10 20,575 35,355 13,656 375 22,074 23,079 7.3 1,499 12.2 2,504 -1,005
7-Nov-10 20,829 35,355 11,157 375 24,573 22,987 18.0 3,744 10.4 2,158 1,586
14-Nov-10 21,225 35,355 10,991 375 24,739 23,416 16.6 3,514 10.3 2,191 1,323
21-Nov-10 22,027 35,355 9,307 375 26,423 24,399 20.0 4,396 10.8 2,372 2,024
28-Nov-10 22,478 35,355 8,425 375 27,305 25,109 21.5 4,827 11.7 2,631 2,196
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Table A5: Assessment of Resource Adequacy: Extreme Weather, Planned Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Jun-09 23,604 35,141 10,307 516 25,350 26,282 7.4 1,746 11.4 2,678 -932
14-Jun-09 24,678 35,141 9,501 516 26,156 27,612 6.0 1,478 11.9 2,934 -1,456
21-Jun-09 25,640 35,141 9,052 516 26,605 28,686 3.8 965 11.9 3,046 -2,081
28-Jun-09 25,457 35,141 8,650 516 27,007 28,500 6.1 1,550 12.0 3,043 -1,493
5-Jul-09 24,012 35,141 8,630 516 27,027 26,694 12.6 3,015 11.2 2,682 333
12-Jul-09 25,580 35,338 6,239 516 29,615 28,519 15.8 4,035 11.5 2,939 1,096
19-Jul-09 26,454 35,338 5,892 516 29,962 29,446 13.3 3,508 11.3 2,992 516
26-Jul-09 25,664 35,338 5,967 516 29,887 28,603 16.5 4,223 11.5 2,939 1,284
2-Aug-09 24,408 35,338 6,057 516 29,797 27,347 22.1 5,389 12.0 2,939 2,450
9-Aug-09 26,409 35,338 5,593 516 30,261 29,445 14.6 3,852 11.5 3,036 816
16-Aug-09 25,839 35,338 6,057 516 29,797 28,808 15.3 3,958 11.5 2,969 989
23-Aug-09 25,002 35,338 6,248 516 29,606 27,971 18.4 4,604 11.9 2,969 1,635
30-Aug-09 25,194 35,338 6,648 516 29,206 28,081 15.9 4,012 11.5 2,887 1,125
6-Sep-09 25,362 35,365 7,962 516 27,919 28,416 10.1 2,557 12.0 3,054 -497
13-Sep-09 25,154 35,365 9,676 516 26,205 28,283 4.2 1,051 12.4 3,129 -2,078
20-Sep-09 24,411 35,365 10,271 516 25,610 27,423 4.9 1,199 12.3 3,012 -1,813
27-Sep-09 23,016 35,365 10,660 516 25,221 25,729 9.6 2,205 11.8 2,713 -508
4-Oct-09 23,064 35,449 10,139 624 25,935 25,822 12.5 2,871 12.0 2,758 113
11-Oct-09 19,885 35,449 10,171 624 25,903 22,453 30.3 6,018 12.9 2,568 3,450
18-Oct-09 20,130 35,449 10,307 624 25,767 22,720 28.0 5,637 12.9 2,590 3,047
25-Oct-09 20,390 35,449 9,987 624 26,087 22,877 27.9 5,697 12.2 2,487 3,210
1-Nov-09 20,854 35,449 10,521 624 25,553 23,284 22.5 4,699 11.7 2,430 2,269
8-Nov-09 21,183 35,449 9,963 624 26,111 23,645 23.3 4,928 11.6 2,462 2,466
15-Nov-09 21,924 35,449 9,446 624 26,628 24,507 21.5 4,704 11.8 2,583 2,121
22-Nov-09 22,471 35,449 10,972 624 25,102 24,894 11.7 2,631 10.8 2,423 208
29-Nov-09 22,932 35,449 10,443 624 25,631 25,377 11.8 2,699 10.7 2,445 254
6-Dec-09 23,093 35,449 8,728 624 27,346 25,782 18.4 4,253 11.6 2,689 1,564
13-Dec-09 23,190 35,449 7,816 624 28,258 25,964 21.9 5,068 12.0 2,774 2,294
20-Dec-09 22,968 35,449 7,946 624 28,128 25,898 22.5 5,160 12.8 2,930 2,230
27-Dec-09 22,251 35,449 7,785 624 28,289 25,216 27.1 6,038 13.3 2,965 3,073
3-Jan-10 22,732 35,449 7,381 624 28,693 25,662 26.2 5,961 12.9 2,930 3,031
10-Jan-10 23,353 35,449 6,290 624 29,784 26,451 27.5 6,431 13.3 3,098 3,333
17-Jan-10 23,692 35,449 6,197 624 29,877 26,790 26.1 6,185 13.1 3,098 3,087
24-Jan-10 24,046 35,449 5,936 624 30,138 27,142 25.3 6,092 12.9 3,096 2,996
31-Jan-10 23,978 35,449 5,878 624 30,196 27,030 25.9 6,218 12.7 3,052 3,166
7-Feb-10 23,865 35,449 8,756 624 27,318 26,553 14.5 3,453 11.3 2,688 765
14-Feb-10 23,429 35,449 8,696 624 27,378 26,117 16.9 3,949 11.5 2,688 1,261
21-Feb-10 23,175 35,449 9,048 624 27,026 25,762 16.6 3,851 11.2 2,587 1,264
28-Feb-10 22,831 35,449 9,165 624 26,909 25,274 17.9 4,078 10.7 2,443 1,635
Table A5: Assessment of Resource Adequacy: Extreme Weather, Planned Scenario IESO_REP_0549v1.0 May 25, 2009
Ontario Total
Week Market Total Reductions Demand Available Required Available Available Required Required Reserve Above
Ending Demand Resources in Resources Measures Resources Resources Reserve Reserve Reserve Reserve Requirement
Day MW MW MW MW MW MW % MW % MW MW
7-Mar-10 22,375 35,439 9,959 624 26,104 24,765 16.7 3,729 10.7 2,390 1,339
14-Mar-10 22,727 35,439 9,429 624 26,634 25,222 17.2 3,907 11.0 2,495 1,412
21-Mar-10 22,340 35,439 9,500 624 26,563 24,835 18.9 4,223 11.2 2,495 1,728
28-Mar-10 21,819 35,439 9,105 624 26,958 24,439 23.6 5,139 12.0 2,620 2,519
4-Apr-10 21,199 35,439 9,756 624 26,307 23,718 24.1 5,108 11.9 2,519 2,589
11-Apr-10 20,532 35,439 8,604 624 27,459 23,212 33.7 6,927 13.1 2,680 4,247
18-Apr-10 20,127 35,439 11,759 624 24,304 22,528 20.8 4,177 11.9 2,401 1,776
25-Apr-10 21,954 35,439 11,424 624 24,639 24,365 12.2 2,685 11.0 2,411 274
2-May-10 21,939 35,439 11,555 624 24,508 24,496 11.7 2,569 11.7 2,557 12
9-May-10 21,697 35,439 14,122 647 21,964 24,522 1.2 267 13.0 2,825 -2,558
16-May-10 22,254 35,439 14,102 647 21,984 25,207 -1.2 -270 13.3 2,953 -3,223
23-May-10 21,979 35,439 14,119 647 21,967 24,889 -0.1 -12 13.2 2,910 -2,922
30-May-10 22,733 35,439 10,050 647 26,036 25,251 14.5 3,303 11.1 2,518 785
6-Jun-10 24,555 35,439 9,936 647 26,150 27,405 6.5 1,595 11.6 2,850 -1,255
13-Jun-10 23,419 35,439 10,031 647 26,055 26,017 11.3 2,636 11.1 2,598 38
20-Jun-10 24,483 35,439 10,033 647 26,053 27,218 6.4 1,570 11.2 2,735 -1,165
27-Jun-10 25,337 35,439 8,676 647 27,410 28,279 8.2 2,073 11.6 2,942 -869
4-Jul-10 24,811 35,439 8,364 647 27,722 27,479 11.7 2,911 10.8 2,668 243
11-Jul-10 24,675 36,441 7,490 647 29,598 27,659 20.0 4,923 12.1 2,984 1,939
18-Jul-10 25,404 36,519 6,832 647 30,334 28,442 19.4 4,930 12.0 3,038 1,892
25-Jul-10 26,348 36,519 6,644 647 30,522 29,386 15.8 4,174 11.5 3,038 1,136
1-Aug-10 25,492 36,519 6,279 647 30,887 28,617 21.2 5,395 12.3 3,125 2,270
8-Aug-10 25,507 36,519 6,786 647 30,380 28,544 19.1 4,873 11.9 3,037 1,836
15-Aug-10 26,300 36,519 6,773 647 30,393 29,337 15.6 4,093 11.6 3,037 1,056
22-Aug-10 25,727 36,519 6,742 647 30,424 28,764 18.3 4,697 11.8 3,037 1,660
29-Aug-10 24,850 36,519 6,939 647 30,227 27,887 21.6 5,377 12.2 3,037 2,340
5-Sep-10 24,864 36,519 9,139 647 28,027 27,684 12.7 3,163 11.3 2,820 343
12-Sep-10 25,267 36,519 10,597 647 26,569 28,276 5.2 1,302 11.9 3,009 -1,707
19-Sep-10 25,020 36,519 11,158 647 26,008 27,959 4.0 988 11.8 2,939 -1,951
26-Sep-10 24,279 36,519 11,313 647 25,853 27,069 6.5 1,574 11.5 2,790 -1,216
3-Oct-10 22,902 36,519 11,225 624 25,918 25,511 13.2 3,016 11.4 2,609 407
10-Oct-10 22,893 37,901 13,103 624 25,422 25,668 11.1 2,529 12.1 2,775 -246
17-Oct-10 19,868 37,901 13,661 624 24,864 22,495 25.2 4,996 13.2 2,627 2,369
24-Oct-10 20,347 37,901 13,410 624 25,115 23,004 23.4 4,768 13.1 2,657 2,111
31-Oct-10 20,575 37,901 13,829 624 24,696 23,102 20.0 4,121 12.3 2,527 1,594
7-Nov-10 20,829 37,901 12,371 624 26,154 23,217 25.6 5,325 11.5 2,388 2,937
14-Nov-10 21,225 37,901 12,102 624 26,423 23,622 24.5 5,198 11.3 2,397 2,801
21-Nov-10 22,027 37,901 10,773 624 27,752 24,615 26.0 5,725 11.8 2,588 3,137
28-Nov-10 22,478 37,901 9,890 624 28,635 25,328 27.4 6,157 12.7 2,850 3,307
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Table A6: Zonal Bottled Generation: Extreme Weather, Both Scenarios IESO_REP_0549v1.0 May 25, 2009
Week Firm Scenario Planned Scenario
Ending Bruce & West Northeast Northwest Bruce & West Northeast Northwest
Day MW MW MW MW MW MW
7-Jun-09 0 0 214 0 0 214
14-Jun-09 168 0 397 168 0 397
21-Jun-09 549 0 363 549 0 363
28-Jun-09 557 0 393 557 0 393
5-Jul-09 1,247 0 436 1,247 0 436
12-Jul-09 1,149 46 321 1,149 46 321
19-Jul-09 805 43 321 805 43 321
26-Jul-09 934 0 310 934 0 310
2-Aug-09 989 0 346 989 0 346
9-Aug-09 779 0 293 779 0 293
16-Aug-09 779 0 276 779 0 276
23-Aug-09 944 0 302 944 0 302
30-Aug-09 925 0 296 925 0 296
6-Sep-09 562 0 69 562 0 69
13-Sep-09 273 0 119 273 0 119
20-Sep-09 349 0 0 349 0 0
27-Sep-09 0 0 0 0 0 0
4-Oct-09 471 0 0 555 0 0
11-Oct-09 753 0 0 837 0 0
18-Oct-09 796 0 0 880 0 0
25-Oct-09 364 0 0 448 0 0
1-Nov-09 298 0 0 382 0 0
8-Nov-09 876 0 24 960 0 24
15-Nov-09 823 0 0 907 0 0
22-Nov-09 1,832 0 227 1,916 0 227
29-Nov-09 1,420 0 110 1,504 0 110
6-Dec-09 1,382 0 253 1,466 0 253
13-Dec-09 1,290 0 288 1,374 0 288
20-Dec-09 1,949 0 328 2,033 0 328
27-Dec-09 2,267 0 365 2,351 0 365
3-Jan-10 2,322 0 313 2,406 0 313
10-Jan-10 2,199 0 265 2,283 0 265
17-Jan-10 2,148 0 223 2,232 0 223
24-Jan-10 1,968 0 227 2,052 0 227
31-Jan-10 1,170 0 212 1,254 0 212
7-Feb-10 1,229 0 270 1,313 0 270
14-Feb-10 1,157 0 282 1,241 0 282
21-Feb-10 1,099 0 253 1,183 0 253
28-Feb-10 690 0 273 774 0 273
Table A6: Zonal Bottled Generation: Extreme Weather, Both Scenarios IESO_REP_0549v1.0 May 25, 2009
Week Firm Scenario Planned Scenario
Ending Bruce & West Northeast Northwest Bruce & West Northeast Northwest
Day MW MW MW MW MW MW
7-Mar-10 690 0 262 774 0 262
14-Mar-10 649 0 252 733 0 252
21-Mar-10 679 0 293 763 0 293
28-Mar-10 711 0 306 795 0 306
4-Apr-10 634 0 320 718 0 320
11-Apr-10 1,491 0 354 1,575 0 354
18-Apr-10 1,495 0 346 1,579 0 346
25-Apr-10 1,214 6 371 1,298 6 371
2-May-10 0 49 325 42 49 325
9-May-10 0 43 318 39 43 318
16-May-10 0 49 331 0 49 331
23-May-10 0 51 347 0 51 347
30-May-10 525 62 336 609 62 336
6-Jun-10 257 25 304 341 25 304
13-Jun-10 321 84 326 405 84 326
20-Jun-10 1,147 112 308 1,231 112 308
27-Jun-10 1,108 110 298 1,192 110 298
4-Jul-10 1,080 110 365 944 110 365
11-Jul-10 1,292 99 309 1,928 99 309
18-Jul-10 1,121 75 301 1,740 75 301
25-Jul-10 942 67 306 1,555 67 306
1-Aug-10 1,086 0 295 1,708 0 295
8-Aug-10 968 0 265 1,577 0 265
15-Aug-10 937 0 284 1,545 0 284
22-Aug-10 924 0 263 1,536 0 263
29-Aug-10 1,070 0 303 1,692 0 303
5-Sep-10 469 0 28 1,313 0 28
12-Sep-10 464 0 0 1,308 0 0
19-Sep-10 545 0 0 1,389 0 0
26-Sep-10 701 0 0 1,545 0 0
3-Oct-10 423 0 0 638 0 0
10-Oct-10 320 0 0 422 0 0
17-Oct-10 1,248 0 0 1,350 0 0
24-Oct-10 1,257 0 0 1,359 0 0
31-Oct-10 1,236 0 0 1,338 0 0
7-Nov-10 218 0 0 1,363 0 0
14-Nov-10 113 0 97 1,156 0 97
21-Nov-10 517 0 291 1,914 0 291
28-Nov-10 1,106 0 316 2,502 0 316
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Table A7: Energy Production Capability Forecast IESO_REP_0549v1.0 May 25, 2009
Firm Scenario Planned Scenario
Month Forecast Energy Forecast Energy
Production Capability (GWh) Production Capability (GWh)
Jun 2009 16,202 16,202
Jul 2009 18,748 18,748
Aug 2009 17,168 17,168
Sep 2009 14,564 14,614
Oct 2009 15,192 15,240
Nov 2009 15,348 15,398
Dec 2009 16,953 17,003
Jan 2010 17,284 17,329
Feb 2010 15,406 15,456
Mar 2010 15,786 15,834
Apr 2010 15,958 16,008
May 2010 16,188 16,237
Jun 2010 16,435 17,181
Jul 2010 18,857 19,604
Aug 2010 18,117 18,840
Sep 2010 15,821 17,474
Oct 2010 17,388 18,988
Nov 2010 17,280 18,933
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Table B1: Transmission Projects IESO_REP_0549v1.0 May 25, 2009
Proposed I/S
Zone CAA-ID# Transmitter Description
Date
East 2007-EX333 Hydro One Networks Inc. Whitby TS: new shunt capacitor at T3/T4 DESN station 2009-Q3
2003-EX176 Hydro One Networks Inc. Kingston-Gardiner TS: new T3/T4 DESN station 2009-Q2
Essa 2006-211 Hydro One Networks Inc. Holland TS: new DESN station 2009-Q2
2005-190 Hydro One Networks Inc. Stayner TS: modifications and new 230 kV line 2009-Q3
Queenston Flow West: new 230 kV circuits Q26M & Q35M (Allanburg x
Niagara 2002-085 Hydro One Networks Inc.
Middleport)
To be determined
2007-257 Hydro One Networks Inc. Thermal uprating of 115 kV circuits D9HS, D10S and Q11S 2010-Q1
2002-EX070 Hydro One Networks Inc. Venessa Junction to Norfolk TS: new 115 kV circuit 2009-Q3
2007-258 Hydro One Networks Inc. Vansickle TS: Replace transformers 2010-Q4
Supply & Energize new 6/8/10 MVA transformer 132 kv / 8.32 kv
Northeast 2008-EX400 Five Nations Energy Inc.
Kashechewan - reliability
2009-Q4
Commission new 132 kv line parallel with existing FNEI 132 kv circuit
from a new Moosonee Switching station to a modified Kashechewan
2002-086 Five Nations Energy Inc. 2009-Q4
Transformer Station to supply 15 - 20 Mw load to DeBeers Canada Inc
west of Attawapiskat - new load & reliability improvement
Complete fiber optic communications link from Moosonee to
N/A Five Nations Energy Inc. 2009-Q3
Attawapiskat - reliability / operation improvement
Mackay TS 115 kV yard refurbishment - three year program - Breaker,
2007-EX322 Great Lakes Power Ltd. 2009-Q2
Switch and CVT Replacement
Third Line TS - Cap Bank #4 and Cap Bank #5 upgrades and series
2009-355 Great Lakes Power Ltd. 2009-Q3
reactor installation
Third Line TS 115 kV yard refurbishment - three year program -
2007-EX321 Great Lakes Power Ltd. 2010-Q4
Complete Station Reconfiguration
N/A Great Lakes Power Ltd. Echo River Protections Upgrades 2009-Q3
N/A Great Lakes Power Ltd. Batchawana TS Ground Grid Refurbishment 2009-Q3
N/A Great Lakes Power Ltd. Magpie TS Battery Replacement 2009-Q4
N/A Great Lakes Power Ltd. Algoma 115 kV Circuits Refurbishment 2012-Q4
2006-262 Hydro One Networks Inc. Mississagi Area Generation Rejection Scheme Expansion 2010-Q3
N/A Hydro One Networks Inc. Retirement of 25 Hz system 2009-Q4
Northwest 2006-247 Hydro One Networks Inc. Lakehead TS: new static var compensator (SVC) 2009-Q4
Ottawa 2000-001 Hydro One Networks Inc. Hawthorne TS: new 1,250 MW Ontario-Quebec interconnection 2009-Q2
Southwest 2006-221 Hydro One Networks Inc. Halton TS and Meadowvale TS: new shunt capacitors 2009-Q2
2006-249 Hydro One Networks Inc. 230 kV circuits B4V & B5V: uprate Hanover x Orangeville sections 2009-Q2
2007-295 Hydro One Networks Inc. Middleport TS: new 4x250 Mvar shunt capacitors 2009-Q2
2007-295 Hydro One Networks Inc. Buchanan TS: new 200 Mvar shunt capacitor 2009-Q3
2007-295 Hydro One Networks Inc. Nanticoke TS: new 2x250 Mvar shunt capacitors 2009-Q4
Ingersoll TS x Karn TS: new 230 kV transmission circuit; Karn TS x
2006-253 Hydro One Networks Inc. 2010-Q2
Woodstock TS new 115 kV transmission circuit
2006-EX299 Hydro One Networks Inc. Burlington TS: Replace 115 kV switchyard 2011-Q2/2012-Q2
Toronto 2006-246 Hydro One Networks Inc. Terminate 230 kV circuit V75R (V77R) into Richview TS & Claireville TS 2009-Q2
2006-248 Hydro One Networks Inc. Hurontario SS to Jim Yarrow MTS: new 230 kV transmission circuits 2010-Q2
Claireville TS:
2006-220 Hydro One Networks Inc. Reterminate circuit 230 kV V71RP to Parkway (V71P) 2009-Q4
Reterminate circuit 230 kV V72R to Cardiff (V41H)
Hurontario SS: new switching station
2006-224 Hydro One Networks Inc. 2010-Q2
Cardiff TS to Hurontario SS: new 230 kV transmission circuits
2007-264 Hydro One Networks Inc. Goreway TS: new T1/T2 DESN station 2010-Q2
2006-230 Hydro One Networks Inc. Churchill Meadows TS: new DESN station 2010-Q2
2006-EX297 Hydro One Networks Inc. Caireville TS x Cherrywood TS: re-inforce transmission 2010-Q4
2008-320 PowerStream Markham MTS#2: new DESN station 2009-Q4
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Table C1: Bruce Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Oct 16 2009 5:00 PM Nov 30 2009 7:00 PM Bruce A TS: AL569 6640532 Non-Recallable CWW None N/A
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Table C2: East Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Sep 21 2009 6:00 AM Oct 09 2009 4:00 PM Easton JCT: L22H::BROCKVILLE_TS::EASTON_JCT, 5310000 8 Hour CWW None N/A
L22H::EASTON_YULE_JCT::SMITHS_FALLS_TS,
L22H::EASTON_JCT::HINCHINBROOKE_SS,
L22H::EASTON_YULE_JCT::EASTON_JCT, 24T1-L22H, 10-
L22H, 49-L22H,
L22H::EASTON_YULE_JCT::ST.LAWRENCE_TS,
L22H::EASTON_YULE_JCT::EASTON_JCT,
L22H::EASTON_JCT::HINCHINBROOKE_SS, T3-L22H,
L22H::BROCKVILLE_TS::EASTON_JCT
Aug 10 2009 9:00 AM Aug 21 2009 4:30 PM Lennox TS: H51L3 6215586 8 Hour CWW None N/A
Jul 06 2009 5:00 AM Jul 31 2009 6:00 PM Gardiner TS: H1T1-X4H, T1B, T1 6511178 8 Hour CWW None N/A
Oct 18 2009 6:00 AM Oct 25 2009 4:00 PM Dobbin TS: X1P::DOBBIN_TS::MASSANOGA_JCT, 20-X1P, 6553957 8 Hour CWW None N/A
X1P::DOBBIN_TS::MASSANOGA_JCT
Sep 14 2009 9:00 AM Sep 25 2009 4:00 PM Hinchinbrooke SS: L1L20 6663698 8 Hour CWW None N/A
Dec 31 2009 8:00 AM Dec 31 2010 2:00 PM Cherrywood TS: P15C::DOBBIN_TS::CHERRYWOOD_TS, 6664885 Immediate CWW FIO 30 MW
AL15, L1L15, DL15, L15L20,
P15C::DOBBIN_TS::CHERRYWOOD_TS
Dec 31 2009 8:00 AM Dec 31 2010 2:00 PM Frontenac TS: 3Q3M6 6664892 3 Hour CWW None N/A
Jun 01 2009 5:00 AM Jun 11 2009 6:00 PM Ardoch DS: AR-1, B1S::BARRETT_CHUTE_SS::ARDOCH_DS, 6853669 4 Hour CWW None N/A
B1S::BARRETT_CHUTE_SS::ARDOCH_DS, 14-B1S
Sep 10 2009 5:00 AM Sep 17 2009 6:00 PM Saunders GS: S32L::SAUNDERS_GS::ST.LAWRENCE_TS, 6853697 4 Hour CWW None N/A
S32L-D, 49-S32L
Jun 15 2009 7:00 AM Jul 17 2009 5:00 PM Vernonville JCT: P4S-A3, A3P4S-3C 6998424 4 Hour CWW None N/A
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Table C3: Essa Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
None
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Table C4: Niagara Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Sep 08 2009 7:00 AM Sep 18 2009 8:00 PM Beck #2 TS: TL21L23 5205809 6 Hour CWW None N/A
Sep 08 2009 7:00 PM Oct 20 2009 9:00 PM DeCew Falls SS: 23-D9HS, 44T1-D3A, 23-D3A, 6649474 12 Hour CWW None N/A
D3A::ST.JOHNS_VALLEY_JCT::HOOPER'S_JCT, 45-D3A,
D3A::FIBRE_JCT::ALLANBURG_TS,
D3A::HOOPER'S_JCT::DECEW_FALLS_SS,
D3A::GIBSON_JCT::ST.JOHNS_VALLEY_JCT,
D3A::GIBSON_JCT::THOROLD_TS,
D3A::FIBRE_JCT::ALLANBURG_TS,
D3A::ST.JOHNS_VALLEY_JCT::HOOPER'S_JCT
Jun 26 2009 4:00 AM Jul 03 2009 3:00 PM Allanburg TS: L1_BUS, L1L6, DL1, 45-D1A 6933334 24 Hour CWW None N/A
Mar 26 2009 10:05 AM Aug 31 2010 6:00 PM Beck #2 TS: R76-S, R76-2, R76, R76-2, R76-2, R76, R76-1, 6309393 3 Hour CWW NY Import Summer 450 MW
R76-1, R76-2, R76-S NY Import Winter 450 MW
NY Export Summer 250 MW
NY Export Winter 250 MW
FABC 50 to 100 MW on top of
other outages, see Bruce,
Southwest and West tabs
Mar 26 2009 10:05 AM Aug 31 2010 6:00 PM Beck #2 TS: R76-2, R76, R76-1, R76-1, R76, R76-2 6309369 Non-Recallable CWW NY Import Summer 450 MW
NY Import Winter 450 MW
NY Export Summer 250 MW
NY Export Winter 250 MW
FABC 50 to 100 MW on top of
other outages, see Bruce,
Southwest and West tabs
Mar 26 2009 10:05 AM Dec 31 2009 6:00 PM Beck #1 SS: L104-BL104, R821, L104-BL104, R821, HT3-104, 6456759 8 Hour CWW None N/A
HT4-104, HT3-104, 20BSH106-7, 9L104_BUS, 20BSH106-7,
9L104_BUS, HT4-104
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Table C5: Northeast Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Mar 26 2009 10:05 AM Dec 31 2009 11:59 PM Spruce Falls P&P CTS: 1-115-J, SW-2-115-I, 2-115-J, SW-1- 6298141 Non-Recallable CWW None N/A
115-I
Jun 01 2009 5:30 AM Jun 26 2009 6:00 PM Sudbury JCT: L1S-LC1, 9-L1S 6606535 4 Hour CWW None N/A
Jun 01 2009 6:00 AM Jul 30 2009 6:00 PM Kirkland Lake TS: 16-A8K, 6792747 4 Hour CWW None N/A
A8K::ANSONVILLE_TS::KIRKLAND_LAKE_TS, 3015-A8K
Aug 10 2009 5:00 AM Aug 27 2009 6:00 PM Martindale TS: 9-H24S, 1820H24S-7 6792751 4 Hour CWW None N/A
Mar 26 2009 10:05 AM Dec 31 2009 11:59 PM Nickel Basin JCT: 932S2B-S5M 5757139 Non-Recallable CWW None N/A
Mar 26 2009 10:05 AM Dec 19 2009 6:00 PM Wawa TS: T2SC2 5876987 4 Hour CWW None N/A
Mar 26 2009 10:05 AM Dec 31 2009 11:59 PM Otter Rapids SS: L6L8, 111-T8M, L6L8, 111-T8M 6214831 Immediate CWW None N/A
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Table C6: Northwest Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Oct 26 2009 7:00 AM Nov 26 2009 6:00 PM Fort Frances TS: K24F::KENORA_TS::FORT_FRANCES_TS, 22- 6267369 4 Hour CWW OMTE, OMTW, Oct 26-Nov 1 and Nov
K24F, 34-K24F EWTE, EWTW, 20-26:
MPFN, MPFS These penalties are for
K24F.
OMTE - 50 MW
OMTW - 250 MW
EWTE - 75 MW
MPFN - 25 MW
MPFS - 90 MW
Nov 2-19:
These penalties are for
K24F + M2D.
OMTE - 100 MW
OMTW - 250 MW
EWTE - 75 MW
EWTW - 50 MW
MPFN - 25 MW
MPFS - 90 MW
Nov 02 2009 7:00 AM Nov 19 2009 6:00 PM Dryden TS: 25-M2D, M2D-D 6395496 4 Hour CWW OMTE, OMTW, Nov 2-19:
EWTE, EWTW, These penalties are for
MPFN, MPFS K24F + M2D.
OMTE - 100 MW
OMTW - 250 MW
EWTE - 75 MW
EWTW - 50 MW
MPFN - 25 MW
MPFS - 90 MW
Sep 02 2009 7:00 AM Sep 09 2009 6:00 PM Kenora TS: K22W::WHITESHELL_CTS::KENORA_TS, 34-K22W 6608790 4 Hour CWW OMTE, OMTW, OMTE - 100 MW
EWTE OMTW - 100 MW
EWTE - 50 MW
May 27 2009 7:00 AM Jun 02 2009 6:00 PM Kenora TS: 34-K21W, K21W::WHITESHELL_CTS::KENORA_TS 6608798 4 Hour CWW OMTE, OMTW, OMTE - 100 MW
EWTE OMTW - 100 MW
EWTE - 50 MW
Jun 08 2009 9:00 AM Jun 19 2009 6:00 PM Lakehead TS: C8, C8A 6638389 8 Hour CWW None N/A
Sep 16 2009 7:00 AM Sep 23 2009 6:00 PM Mackenzie TS: 20-F25A, 22-F25A, 6638462 4 Hour CWW OMTE, OMTW, OMTE - 70 MW
F25A::FORT_FRANCES_TS::MACKENZIE_TS EWTE, EWTW, OMTW - 250 MW
MPFN, MPFS EWTE - 75 MW
EWTW - 50 MW
MPFN - 25 MW
MPFS - 90 MW
Sep 30 2009 7:00 AM Oct 07 2009 6:00 PM Mackenzie TS: 20-F25A, 6638473 4 Hour CWW OMTE, OMTW, OMTE - 70 MW
F25A::FORT_FRANCES_TS::MACKENZIE_TS, 22-F25A EWTE, EWTW, OMTW - 250 MW
MPFN, MPFS EWTE - 75 MW
EWTW - 50 MW
MPFN - 25 MW
MPFS - 90 MW
Oct 14 2009 7:00 AM Oct 21 2009 6:00 PM Fort Frances TS: F25A::FORT_FRANCES_TS::MACKENZIE_TS, 6638497 4 Hour CWW OMTE, OMTW, OMTE - 70 MW
22-F25A, 20-F25A EWTE, EWTW, OMTW - 250 MW
MPFN, MPFS EWTE - 75 MW
EWTW - 50 MW
MPFN - 25 MW
MPFS - 90 MW
Jun 24 2009 5:00 AM Jun 30 2009 6:00 PM Dryden TS: D26A::DRYDEN_TS::MACKENZIE_TS, 25-D26A, 6987973 4 Hour CWW OMTE, OMTW, These penalties are for
20-D26A EWTE, EWTW, D26A + K21W.
MPFN OMTE - 100 MW
OMTW - 250 MW
EWTE - 75 MW
EWTW - 120 MW
MPFN - 50 MW
Jun 10 2009 5:00 AM Jun 16 2009 6:00 PM Dryden TS: D26A::DRYDEN_TS::MACKENZIE_TS, 20-D26A, 6987978 4 Hour CWW OMTE, OMTW, These penalties are for
25-D26A EWTE, EWTW, K23D + D26A.
MPFN OMTE - 100 MW
OMTW - 250 MW
EWTE - 75 MW
EWTW - 100 MW
MPFN - 50 MW
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Table C7: Ottawa Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Mar 26 2009 10:05 AM Jun 05 2009 3:00 PM Navan DS: T2 7002690 Non-Recallable CWW None N/A
Jun 06 2009 2:00 PM Jul 10 2009 3:00 PM Navan DS: T1 7002695 Non-Recallable CWW None N/A
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Table C8: Southwest Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Jun 22 2009 6:00 AM Jul 03 2009 7:00 PM Burlington TS: A2L25 5286681 1 Hour CWW None N/A
Oct 05 2009 6:00 AM Oct 16 2009 7:00 PM Middleport TS: KL25 5286695 1 Hour CWW None N/A
Aug 31 2009 7:00 AM Sep 11 2009 8:00 PM Middleport TS: KL30 5286709 Non-Recallable CWW None N/A
Jun 08 2009 7:00 AM Jun 19 2009 5:00 PM Burlington TS: H2L36 5286908 1 Hour CWW None N/A
Oct 19 2009 6:15 AM Oct 29 2009 2:00 PM Middleport TS: L81L85, 25-M585M, 5776356 24 Hour CWW FABC Voltage 300 MW on Voltage Limit
M585M::MIDDLEPORT_TS::MILTON_SS, 40-M585M FABC Stability 100 MW on Stability Limit
FETT 700 MW on FETT Limit
Dec 04 2009 3:00 AM Dec 23 2009 4:00 PM Nanticoke TS: K1_BUS, K1L5, K1L1, K1K2 6244523 16 Hour CWW None N/A
Jun 07 2009 5:00 PM Jun 15 2009 8:00 AM Nanticoke TS: K1_BUS, K1K2, P1P2, K1L1, K1L5, P1_BUS, 6371127 4 Hour CWW None N/A
P1F, P1L22
Sep 14 2009 4:00 AM Sep 25 2009 6:00 PM Beach TS: 17-Q29HM, Q29HM::BECK_#2_TS::HANNON_JCT, 6378699 4 Hour CWW FABC Voltage 100 MW on Voltage Limit
Q29HM::BEACH_TS::HANNON_JCT, T2-Q29HM, FABC Stability 100 MW on Stability Limit
Q29HM::NEBO_JCT::HANNON_JCT, QFW 450 MW on thermal
Q29HM::NEBO_JCT::MIDDLEPORT_TS, 28-Q29HM,
Q29HM::BEACH_TS::HANNON_JCT,
Q29HM::NEBO_TS::NEBO_JCT, 25-Q29HM, T4-Q29HM
Jun 08 2009 5:00 AM Jul 07 2009 7:00 PM Nanticoke TS: P1L22 6474137 Non-Recallable CWW None N/A
Aug 04 2009 7:00 AM Aug 28 2009 2:00 PM Trafalgar TS: K1K2 6545915 5 Day CWW None N/A
Sep 08 2009 7:00 AM Oct 02 2009 2:00 PM Trafalgar TS: KL14 6545918 5 Day CWW None N/A
Jun 08 2009 7:00 AM Jun 19 2009 3:00 PM Nanticoke TS: AL581 6598271 8 Hour CWW None N/A
May 11 2009 5:00 PM Jun 15 2009 7:00 PM Nanticoke TS: L5F, P1F 6634693 Non-Recallable CWW None N/A
Jul 08 2009 7:00 AM Aug 13 2009 7:00 PM Nanticoke TS: K1L1 6634750 Non-Recallable CWW None N/A
Jul 09 2009 7:00 AM Jul 29 2009 7:00 PM Nanticoke TS: P1L22, P1P2, P1F, P1_BUS 6634753 4 Hour CWW None N/A
Sep 08 2009 7:00 AM Oct 02 2009 6:00 PM Nanticoke TS: K1K2 6634771 Non-Recallable CWW None N/A
Oct 05 2009 7:00 AM Oct 30 2009 6:00 PM Nanticoke TS: P1P2 6634789 Non-Recallable CWW None N/A
Nov 02 2009 2:00 AM Feb 12 2010 9:00 PM Milton SS: M571V::MILTON_SS::CLAIREVILLE_TS, HL585, 6655473 Non-Recallable CWW FABC Stability 100 MW on Stability Limit
HL573, L61L71, 40-M571V, 51-M571V, H_BUS FETT 200 MW on FETT Limit
Oct 19 2009 7:00 AM Nov 13 2009 2:00 PM Trafalgar TS: HL21 6655488 5 Day CWW None N/A
Feb 01 2010 7:00 AM Feb 26 2010 6:00 PM Nanticoke TS: P2L2 6746288 Non-Recallable CWW None N/A
Mar 01 2010 7:00 AM Mar 26 2010 6:00 PM Nanticoke TS: L2E 6746334 Non-Recallable CWW None N/A
Apr 19 2010 7:00 AM May 13 2010 6:00 PM Nanticoke TS: K2E 6746369 Non-Recallable CWW None N/A
May 17 2010 7:00 AM May 28 2010 6:00 PM Nanticoke TS: L2E, P2L2, 59-N2M 6759466 Non-Recallable CWW None N/A
Jun 01 2009 4:45 AM Jun 19 2009 3:00 PM Kenilworth TS: K2G::KENILWORTH_TS::GAGE_TS, 24A8G, 6769473 2 Week CWW None N/A
24-K2G, P1_BUS, T1-P, 24A8G, T4-A, 24-K2G, A4_BUS, 27-
K2G, 24P1P2, A4-A5
Jun 15 2009 8:00 AM Jul 31 2009 11:59 PM Kitchener MTS#4: T82B, T8-D11K, K4T8-L, T8, T81B 6885707 2 Week CWW None N/A
Jun 17 2009 4:00 AM Jun 25 2009 7:00 PM Milton SS: HL573, L61L71, 40-M571V, H_BUS, HL585 6987225 4 Hour CWW FABC Stability 50 MW on Stability Limit
FETT 200 MW on FETT Limit
Mar 29 2010 7:00 AM Apr 15 2010 6:00 PM Nanticoke TS: P2L6, L6L21, 59-N6M 6746356 Non-Recallable CWW FABC Voltage 100 MW on Voltage Limit
FABC Stability 100 MW on Stability Limit
Mar 26 2009 10:05 AM Dec 31 2009 11:00 PM Stirton TS: HL4::STIRTON_TS::ELGIN_TS, A1-H2, 48HL4-28 2976560 1 Hour CWW None N/A
Mar 26 2009 10:05 AM Jul 31 2009 11:59 PM Middleport TS: 25-Q26M 4108501 Non-Recallable CWW None N/A
Mar 26 2009 10:05 AM Jul 31 2009 11:59 PM Middleport TS: 25-Q35M 4108511 Non-Recallable CWW None N/A
Mar 26 2009 10:05 AM Dec 31 2009 6:00 PM Middleport TS: K1K2, D1D2 6757111 Non-Recallable CWW None N/A
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Table C9: Toronto Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
May 25 2009 5:00 AM Jun 01 2009 7:00 PM Claireville TS: HL75, T16L75, 51-V75P 6292107 Non-Recallable CWW None N/A
Jun 24 2009 5:00 PM Jul 24 2009 5:00 PM Claireville TS: KL71, 51-V71RP, 88-V71RP, T14L71 6292245 Non-Recallable CWW None N/A
Jun 24 2009 5:00 AM Jul 24 2009 6:00 PM Claireville TS: L71L77, K2L71 6298024 Non-Recallable CWW FETT Base FETT limit covers the
first Central element
outage
Sep 16 2009 6:00 AM Sep 22 2009 4:00 PM Wilson TS: B23C::WILSON_TS::WILSON_JCT, 6372066 4 Hour CWW None N/A
B23C::WHITBY_JCT::WILSON_JCT,
B23C::CHERRYWOOD_TS::WHITBY_JCT, T4-B23C, T2-B23C,
81-B23C, B23C::WHITBY_TS::WHITBY_JCT, 78-B23C,
B23C::WILSON_JCT::BELLEVILLE_TS, T3-B23C
Sep 08 2009 6:00 AM Sep 25 2009 3:30 PM Cherrywood TS: AL551 6447964 24 Hour CWW None N/A
Jun 24 2009 7:00 AM Jul 08 2009 3:30 PM Cherrywood TS: L15L20 6607734 8 Hour CWW None N/A
Sep 14 2009 3:00 AM Mar 04 2010 7:00 PM Claireville TS: AL510, AL571, AL560, A1-A2, A2_BUS 6655466 Non-Recallable CWW None N/A
Apr 17 2009 7:15 AM Jul 04 2009 4:00 PM Bowmanville SS: H3L521, H3E 6848998 3 Hour CWW NBLIP 500 MW on NBLIP
Jun 02 2009 7:00 AM Jun 16 2009 6:00 PM Cherrywood TS: DT15 6867257 4 Hour CWW None N/A
Aug 11 2009 7:00 AM Aug 25 2009 6:00 PM Cherrywood TS: KL35 6867263 4 Hour CWW None N/A
Sep 08 2009 7:00 AM Sep 22 2009 6:00 PM Cherrywood TS: DT17 6867266 4 Hour CWW None N/A
Oct 06 2009 7:00 AM Oct 20 2009 6:00 PM Cherrywood TS: DL16 6867269 4 Hour CWW None N/A
Nov 10 2009 7:00 AM Nov 24 2009 6:00 PM Cherrywood TS: KL16 6867273 4 Hour CWW None N/A
May 10 2009 5:00 AM Jun 23 2009 4:00 PM Claireville TS: 51-V72RS 6932426 Non-Recallable CWW FETT Base FETT limit covers the
first Central element
outage
Jun 03 2009 6:00 AM Jun 21 2009 7:00 PM Claireville TS: K2L83, K2L71, KL71, K1K2 7013771 Non-Recallable CWW None N/A
Jan 23 2009 10:05 AM Feb 28 2010 11:59 PM Gerrard TS: H3L.CA2::GERRARD_TS::BLOOR_STREET_JCT, 6803665 Non-Recallable CWW None N/A
H3LGE-BL, H3LGE-BL
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Table C10: West Zone IESO_REP_0549v1.0 May 25, 2009
Major
Outage Transmission
Planned Start Date Planned End Date Equipment O/S Recall Time Type Reduction in Limit
Request Id Interface
Impacted
Nov 21 2009 7:00 AM Nov 29 2009 5:00 PM Longwood TS: W52-B562L, 21-B562L, 5046792 3 Hour CWW FABC Voltage 765 MW on Voltage Limit
B562L::LONGWOOD_TS::BRUCE_A_TS, PL562, HL562 FABC Stability 80 MW on Stability Limit
NBLIP 500 MW on NBLIP
Jun 22 2009 4:00 AM Jul 10 2009 7:00 PM BUCHAN230JCT: W43L::BUCHANAN_TS::BUCHAN230JCT, 6244712 16 Hour CWW FABC Voltage 150 MW on Voltage Limit
W43L::BUCHANAN_DESN_TS::BUCHAN230JCT, L33L43, 19- FABC Stability 100 MW on Stability Limit
W43L, W43L::BUCHAN230JCT::LONGWOOD_TS, HL43, T13- BLIP 500 MW on BLIP
W43L
Aug 31 2009 4:00 AM Oct 16 2009 7:00 PM Buchanan TS: SC21D, SC21SC, SC21-D, SC21 6244765 25 Day CWW None N/A
Oct 19 2009 4:00 AM Dec 04 2009 7:00 PM Buchanan TS: SC22-H, SC22, SC22H, SC22SC 6244771 25 Day CWW None N/A
Sep 21 2009 5:00 AM Oct 09 2009 6:00 PM Waterman CTS: 230B_BUS, PSR5-2, PSR5-S, PSR5, PSR5-1, 6509482 8 Hour CWW Ontario to Michigan Reduces Ont-Mich export by
J5D::WATERMAN_CTS::KEITH_TS, PSR5-2 FABC Voltage 350 MW and Mich-Ont Import
FABC Stability by 330 MW.
BLIP 150 MW on Voltage Limit
100 MW on Stability Limit
500 MW on BLIP
Oct 19 2009 4:00 AM Nov 27 2009 6:00 PM Lambton TS #2: T7-L4D, 27-T7, T7 6509773 3 Day CWW Ontario to Michigan Reduces Ont-Mich export by
FABC Voltage 190 MW and Mich-Ont Import
FABC Stability by 550 MW.
BLIP 150 MW on Voltage Limit
100 MW on Stability Limit
500 MW on BLIP
Aug 30 2009 9:00 AM Dec 23 2009 5:00 PM Woodstock TS: 10-W12W, 10-W7W 6565290 Non-Recallable CWW None N/A
Sep 08 2009 4:30 AM Sep 15 2009 5:00 PM Highbury TS: W9L::BUCHANAN_TS::HIGHBURY_TS, T4-H3, 6631098 4 Hour CWW None N/A
H3_BUS, 19-W9L
Apr 18 2009 10:00 AM Dec 31 2009 9:01 AM Lambton TS #2: PS51-2 6953753 1 Minute CWW None N/A
Mar 26 2009 10:05 AM Dec 31 2009 2:00 PM Wanstead TS: SC1B, SC1B 6266023 4 Hour CWW None N/A
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