Alberta Electric System Operator
System Co-ordination Plan
2025-05-15 to 2025-05-23
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 30-Jun-26 16:00 EPCOR IO C2 (Rossdale) forced outage 2,825.33 Days
Continuous		  
24-Oct-18 01:13 30-Jun-26 16:00 EPCOR IO C1 (Rossdale) forced outage 2,806.62 Days
Continuous		  
27-Nov-23 08:00 20-Jun-25 16:00 ENMAX Outage 32.2TR (SS-32) 32 sub 32.2TR 8 kV bus switchgear demolition 571.29 Days
Continuous		  
26-Jul-24 10:00 31-Jul-26 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency removal to replace failed 502R @834S 735.25 Days
Continuous		  
23-Aug-24 13:45 31-May-25 14:29 ALTALINK Outage 157s C1 (157s Lac La Biche) forced outage 281.03 Days
Continuous		  
23-Sep-24 10:00 29-May-25 12:00 ATCO TE 741s RTU/SCADA (741s Fox Creek) RTU configuration on new and old RTU's onsite 248.08 Days
Continuous		  
05-Oct-24 00:00 30-Jun-25 17:00 BHE Canada Outage 120s C1 (120s Picture Butte) forced outage 268.71 Days
Continuous		  
21-Oct-24 12:00 29-May-25 17:30 ATCO TE 741s Protection & Control (741s Fox Creek) block 144kv and 25 kv bus protection and breaker fail protection for the duration of 741s project 220.23 Days
Continuous		  
03-Jan-25 07:00 27-Jun-25 17:00 EPCOR TE 805s Protection & Control (805s Jasper), 805s RTU/SCADA (805s Jasper) protection blocking for P&C maintenance at Jasper 175.38 Days
Continuous		  
06-Jan-25 09:30 23-May-25 17:00 ALTALINK Outage 150L (42s Sarcee - 150AL tap), 42s 150W (42s Sarcee) arctic arrow will require a GOI on 150L to rebuild the section of line from structure 47-198. 137.27 Days
Continuous		  
24-Jan-25 00:00 31-Dec-25 16:00 ALTALINK Outage 74s C3 (74s Janet) forced outage 341.67 Days
Continuous		  
10-Feb-25 00:00 23-Dec-25 23:00 ATCO, ALTALINK IO 840s McNeill Station, 830L (562s Cypress - 840s McNeill Station), 840s 701T (840s McNeill Station), 840s 901T (840s McNeill Station) available for emergency use only 316.96 Days
Continuous		 AB-SK
11-Feb-25 10:00 30-May-25 16:00 ATCO TE 940s Protection & Control (940s Beartrap) relay testing 108.21 Days
Continuous		  
11-Mar-25 00:00 31-Dec-25 16:00 ALTALINK Outage 377s C1 (377s AML Hardisty) forced outage 295.71 Days
Continuous		  
18-Mar-25 14:00 17-Mar-26 17:30 ALTALINK Outage 217s C1 (217s North Red Deer) cap. bank unavailable and cannot be energized due to Koncar CTs being present 364.15 Days
Daily		  
20-Mar-25 08:00 20-Mar-26 17:00 ALTALINK Outage 263s C1 (263s Strachan) forced outage 365.38 Days
Continuous		  
20-Mar-25 08:00 20-Mar-26 17:00 ALTALINK Outage 256s C1 (256s Harmattan) forced outage 365.38 Days
Continuous		  
28-Mar-25 17:31 02-Jun-25 16:00 ATCO TE APS# 203 7L128-963S Overload Mitigation DLR integration checks 65.94 Days
Continuous		  
31-Mar-25 07:00 07-Aug-25 17:00 EPCOR Outage 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) Cloverbar - TX1 LCR 129.42 Days
Continuous		  
31-Mar-25 07:00 29-Aug-25 17:00 EPCOR TE 987s Protection & Control (987s Clover Bar) Cloverbar: protection blocking, 240 kV bus 3 differential for TX1 LCR duration 151.42 Days
Continuous		  
31-Mar-25 07:00 04-Jul-25 17:00 EPCOR TE Protection & Control (Woodcroft) Woodcroft: protection blocking for merging unit and protection upgrade. 95.42 Days
Continuous		  
14-Apr-25 07:00 23-May-25 17:00 EPCOR Outage 52s E2402 (52s East Industrial), 52s T2 (52s East Industrial) east industrial: emergency investigation and possible replacement of secondary cable and followed by TX2 protection upgrade cutovers 39.42 Days
Continuous		  
28-Apr-25 07:00 19-May-25 17:00 ALTALINK, EPCOR RB 1044L (EP 805s Jasper - 816s Petrolia) broken insulator replacement/insulator washing and City of Edmonton proximity request 21.42 Days
Continuous		  
28-Apr-25 07:00 19-May-25 17:00 ALTALINK, EPCOR RB 1045L (EP 805s Jasper - 1045AL tap) City of Edmonton proximity request 21.42 Days
Continuous		  
30-Apr-25 09:30 23-May-25 17:30 ATCO TE 790s Protection & Control (790s Poplar Hill), 790s RTU/SCADA (790s Poplar Hill) replace 5L999 protection
 23.33 Days
Continuous		  
30-Apr-25 14:00 23-May-25 14:00 ENMAX, ALTALINK Outage 1109L (SS-25 - SS-65) complete termination of new cables on 1109L str 1 23 Days
Continuous		  
30-Apr-25 14:00 23-May-25 14:00 ENMAX, ALTALINK Outage 1109L (SS-25 - SS-65) complete termination of new cables on 1109L str 1 23 Days
Continuous		  
04-May-25 04:00 16-May-25 18:00 SUNCOR TE SUNCOR ICCP Outage, Suncor RTU/SCADA (Suncor) temporary power tie in 12.58 Days
Continuous		  
05-May-25 07:00 23-May-25 17:00 EPCOR Outage 72NW15 (Namao - Woodcroft), T2 (Woodcroft), W725 (Woodcroft), W723 (Woodcroft), N726 (Namao), WAB2 (Woodcroft) TX2 zone protection upgrade cutovers and W725 breaker maintenance 18.42 Days
Continuous		  
05-May-25 07:00 17-May-25 17:00 EPCOR Outage CV5 (EP 511s Victoria - 557s Castle Downs), EP 511s Victoria T5 (EP 511s Victoria), 557s CD2405 (557s Castle Downs), 557s CD2406 (557s Castle Downs), EP 511s V2401 (EP 511s Victoria), EP 511s V727 (EP 511s Victoria), EP 511s V728 (EP 511s Victoria), EP 511s VDS25 (EP 511s Victoria) CV5 zone doble and disconnect maintenance and Victoria TX5 doble and UGT manhole inspections 12.42 Days
Continuous		  
05-May-25 09:30 16-May-25 17:30 ATCO Outage 2029s 500kV Bus 1200BS21 (2029s Heathfield), 2029s 1203 (2029s Heathfield), 2029s 1206 (2029s Heathfield), 2029s 1209 (2029s Heathfield), 2029s 1215 (2029s Heathfield), 2029s 1203B (2029s Heathfield), 2029s 1206B (2029s Heathfield), 2029s 1209B (2029s Heathfield), 2029s 1215B (2029s Heathfield) PRC-005 - trip coil testing - breaker 1215 @ 2029s - relays & aux relays for 1200BS2 and bus breakers
return on weekends		 11.33 Days
Continuous		  
05-May-25 11:00 15-May-25 17:01 ATCO Outage 7L90 (741s ATC Fox Creek - 7LA90 tap), 741s 701 (741s ATC Fox Creek) 741s Fox Creek substation rebuild project - demo old cables, install and terminate new cables, cut over to new protection 10.25 Days
Continuous		  
06-May-25 07:00 15-May-25 17:30 ALTALINK Outage 776L (308s Albchem Beaverhill Creek - 410s Josephburg), 308s 776W (308s Albchem Beaverhill Creek) replace structures 39-41 in new alignment with new structures for line move project 9.44 Days
Continuous		  
06-May-25 08:00 22-May-25 16:00 ATCO, CNRL TE 838s Protection & Control (838s Horizon Mining) block relay, update firmware for latest security vulnerabilities 16.33 Days
Continuous		  
06-May-25 08:00 16-May-25 20:00 SUNCOR Outage 29PL6-7 (30EDD-1 - 29EDD-5), 29PL6-4 (29EDD-1 Millennium - 30EDD-1), 30EDD-1 623T (30EDD-1), 30EDD-1 626T (30EDD-1), 30EDD-1 621T (30EDD-1), 30EDD-1 PSD-621-LOAD (30EDD-1), 30EDD-1 621 (30EDD-1), 30EDD-1 622 (30EDD-1), 30EDD-1 623 (30EDD-1), 30EDD-1 624 (30EDD-1), 30EDD-1 629 (30EDD-1), 30EDD-1 630 (30EDD-1), SPL6-7 (29EDD-5), 30EDD-1 622TD (30EDD-1), 30EDD-1 29PL6-4D1 (30EDD-1) 29PP-116 G/H/I/E/F Bus pm 10.5 Days
Continuous		  
06-May-25 08:00 16-May-25 16:00 ATCO, CNRL TE 838s RTU/SCADA (838s Horizon Mining) block SMP/2440, update firmware for latest security vulnerabilities 10.33 Days
Continuous		  
07-May-25 08:30 16-May-25 17:00 ATCO Outage 879s 702T (879s Scotford Upgrader), 879s 52-1B (879s Upgrader) 702T maintenance, 502FCL maintenance 9.35 Days
Continuous		  
09-May-25 08:00 15-May-25 17:00 PANC, ALTALINK, NEXENI Outage PCES02L (391s Balzac - Balzac Power Station), 391s 25 (391s Balzac), 52-211 (Balzac Power Station), 89-213BP (Balzac Power Station) maintenance
6.38 Days
Continuous		  
12-May-25 07:00 16-May-25 11:00 EPCOR Outage 72NW15 (Namao - Woodcroft), N726 (Namao), W723 (Woodcroft) doble and disconnect maintenance 4.17 Days
Continuous		  
12-May-25 07:00 17-May-25 17:00 EPCOR Outage 805s T4 (805s Jasper), EP 805s J2405 (EP 805s Jasper), EP 805s J2406 (EP 805s Jasper), EP 805s JAB4 (EP 805s Jasper) t4 zone relay maintenance 5.42 Days
Continuous		  
12-May-25 07:00 16-May-25 17:00 EPCOR RB 711L (113s Inland Cement - 747L tap) washing program 4.42 Days
Continuous		  
12-May-25 07:00 16-May-25 17:00 ALTALINK RB 747L (99s North St. Albert - 711L tap), 747L (37s North Calder - 711L tap) 711L / 747L: reclose block for EPCOR aerial washing program 4.42 Days
Daily		  
12-May-25 07:00 15-May-25 17:00 ALTALINK TE 89s RTU/SCADA (89s Ellerslie) testing and commissioning new fence gate status/alarms to ACC/EMS 3.42 Days
Daily		  
12-May-25 07:00 16-May-25 11:00 EPCOR Outage 330p 500kV Bus 1 (330p Genesee), 330P 12TC1 (330p Genesee), 330p 1207 (330p Genesee), 330p 1204 (330p Genesee), 330p 1201 (330p Genesee), 330p 1210 (330p Genesee), 330p 1214 (330p Genesee), 330p 805 (330p Genesee), 330p 12TC1D (330p Genesee) 500kV bus 1 yard lighting upgrade. 4.17 Days
Continuous		  
12-May-25 07:00 16-May-25 17:00 EPCOR Outage 330p 12GT7D (330p Genesee), 330p 1214 (330p Genesee), 330p 1215 (330p Genesee) MOD wiring and logic changes 4.42 Days
Continuous		  
12-May-25 07:30 15-May-25 17:30 ALTALINK RB 1201L (520s Bennett - BCH Cranbrook) south crew will be replacing anchors at structure #1201L400 3.42 Days
Daily		  
12-May-25 08:00 29-Jun-25 16:00 ENMAX Outage 3.84L (SS-3 - SS-13), 3B138-3.84 (SS-3), 13B138-3.84 (SS-13) complete reconductoring of 3.84 line 48.33 Days
Continuous		  
12-May-25 08:00 22-May-25 16:00 Syncrude Outage 12 (Aurora) SCL - replace 72kV breaker in G01 substation 10.33 Days
Continuous		  
12-May-25 08:00 15-May-25 16:00 ATCO RB 7L51 (788s Hotchkiss - 927s Buchanan Creek) 7L51 climbing inspection 3.33 Days
Continuous		  
12-May-25 08:00 18-May-25 07:00 CMH Outage MH-6L (MHS-1 CMH Power Plant - MHS-9 South Saskatchewan), MHS-9 MH138-T11 (MHS9 Power Plant), MHS-9 MH138-902 (MHS-9 South Saskatchewan) replacement of bushings on MH138-T11 and perform breaker maintenance on MH138-902 5.96 Days
Continuous		  
12-May-25 08:00 15-May-25 17:00 ALTALINK RB 113L (20s Ghost - 33s Spray) prepping for component replacement str 114-193 3.38 Days
Daily		  
12-May-25 08:00 15-May-25 16:00 ENMAX Outage 9.1TR (SS-9) relay protection test 3.33 Days
Continuous		  
12-May-25 09:00 17-Jun-25 20:00 SUNCOR TE 29EDD-94 Protection & Control (29EDD-94 Voyageur) block 7 relays CWP16 36.46 Days
Continuous		  
12-May-25 09:00 15-May-25 18:00 ALTALINK Outage 799L (235s Entwistle - 443s South Mayerthorpe), 235s 799N (235s Entwistle) 799L rebuild (Str 858-889) 3.38 Days
Continuous		  
12-May-25 09:30 16-May-25 17:30 ATCO Outage 757s 701T (757s Battle River), 757s 606 (757s Battle River), 757s 701 (757s Battle River) transformer class1 major testing 4.33 Days
Continuous		  
12-May-25 10:00 15-May-25 16:00 ATCO Outage 7L89 (700s Bonnyville - 721s La Corey), 700s 703 (700s Bonnyville) PRC-005 relay testing 3.25 Days
Continuous		  
12-May-25 10:00 16-May-25 16:00 ATCO TE 732s Protection & Control (732s Mitsue) microprocessor relay testing 4.25 Days
Continuous		  
12-May-25 11:00 15-May-25 17:00 ATCO, ALTALINK RB 9L960 (13s Deerland - 825s Whitefish Lake) climbing inspection 3.25 Days
Continuous		  
12-May-25 11:00 15-May-25 17:00 ATCO, ALTALINK RB 9L961 (13s Deerland - 825s Whitefish Lake) climbing inspection 3.25 Days
Continuous		  
12-May-25 11:00 15-May-25 17:00 ATCO, ALTALINK RB 9L960 (13s Deerland - 825s Whitefish Lake) climbing inspection 3.25 Days
Continuous		  
12-May-25 11:00 15-May-25 17:00 ATCO, ALTALINK RB 9L961 (13s Deerland - 825s Whitefish Lake) climbing inspection 3.25 Days
Continuous		  
12-May-25 12:00 22-May-25 16:00 ATCO TE 849s Protection & Control (849s Joslyn Creek) once firmware upgrade completed at Horizon, line differential testing required, block relay and test 10.17 Days
Continuous		  
13-May-25 07:00 23-May-25 17:00 EPCOR Outage 987s T3 (987s Clover Bar), 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar), 987s C2402 (987s Clover Bar), 987s C2401 (987s Clover Bar), 987s C2403 (987s Clover Bar), 987s C2407 (987s Clover Bar), 987s CDS25 (987s Cloverbar) clearance and induction hazards for TX1 construction 10.42 Days
Continuous		  
13-May-25 07:00 15-May-25 17:00 ALTALINK, EPCOR Outage 809L (320p Keephills - 510s Sunnybrook), 834L (320p Keephills - 384s Keystone), 400L (320p Keephills - 320p Keephills), 401L (320p Keephills - 320p Keephills), 767L (320p Keephills - 767CL tap), 320p T1 (320p Keephills), 320p T4 (320p Keephills), 320p 138kV Bus (320p Keephills), 320p 809X (320p Keephills), 320p 834X (320p Keephills), 320p 767N (320p Keephills), 320p 400 (320p Keephills), 320p 401 (320p Keephills), 320p 91 (320p Keephills), 320p 105 (320p Keephills) replace 320p92 and perform maintenance on 320p400 and 320p401 2.42 Days
Continuous		  
13-May-25 08:00 22-May-25 17:00 ALTALINK Outage 163s T2 (163s Amoco Empress) 163sT2 oil reclaim and maintenance 9.38 Days
Continuous		  
13-May-25 08:00 30-May-25 09:00 BCH Outage T3 (BCH Natal) disconnect T3 17.04 Days
Continuous		 AB-BC
13-May-25 08:30 16-May-25 16:00 ATCO, FMGW Outage 1024s PT-6001 (1024s Granlea), 1024s PT-6002 (1024s Granlea), 1024s 952-600001 (1024s Granlea), 1024s PS-6005 (1024s Granlea), 1024s PS-6006 (1024s Granlea), 1024s PS-6007 (1024s Granlea), 1024s PS-6008 (1024s Granlea) transformer leak repairs and inspections and 34kv bus bird proofing installation 3.31 Days
Continuous		  
13-May-25 08:30 15-May-25 18:00 ATCO, ALTALINK, FMGW TE 1024s RTU/SCADA (1024s Granlea) networking cutover 2.4 Days
Continuous		  
13-May-25 09:00 16-May-25 17:00 ATCO TE 879s Scotford Upgrader RTU/SCADA 702T ITM wiring/settings update 3.33 Days
Continuous		  
13-May-25 12:17 15-May-25 15:00 ALTALINK, BCH Outage 786L (799s Coleman - BCH Natal), 1D24 (BCH Natal), 799s 786W (799s Coleman) out-of-service on BCH request 2.11 Days
Continuous		 AB-BC
14-May-25 04:01 14-Jul-25 07:30 ALTALINK Outage 799s T3 (799s Coleman) replace T3 61.15 Days
Continuous		  
14-May-25 07:00 15-May-25 15:00 ALTALINK TE 267s RTU/SCADA (267s Killarney Lake) changing default settings from VLAN1 to VLAN2 1.33 Days
Daily		  
14-May-25 07:00 16-May-25 17:00 ALTALINK TE 184s RTU/SCADA (184s Petro-Canada Edmonton) replace failing RTU 2.42 Days
Daily		  
14-May-25 08:00 10-Feb-26 16:00 ENMAX TE Protection & Control (SS-32) 32sub 138kV autoswitching protection outage 272.38 Days
Continuous		  
14-May-25 08:00 15-May-25 17:30 ALTALINK Outage 425L (194s South Red Deer - 217s North Red Deer), 217s 425 (217s North Red Deer), 194s 425 (194s South Red deer) breaker maintenance 1.4 Days
Continuous		  
14-May-25 08:00 15-May-25 16:00 ENMAX Outage 41.84L (SS-41 - SS-54), 41B138-41.84 (SS-41), 54B138-41.84 (SS-54) HV breaker maintenance 1.33 Days
Continuous		  
14-May-25 09:30 16-May-25 17:30 ATCO Outage 790s 703T (790s Poplar Hill), 790s 704 (790s Poplar Hill) trip coil testing 2.33 Days
Continuous		  
14-May-25 23:00 15-May-25 03:00 ALTALINK Outage 62s T1 (62s Brazeau Plant), 62s 1 (62s Brazeau Plant) maintenance 4 Hours
Continuous		  
15-May-25 03:00 15-May-25 07:00 ALTALINK Outage 62s T2 (62s Brazeau Plant), 62s 2 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
15-May-25 07:00 15-May-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 373s RTU/SCADA (373s Madden), 238s RTU/SCADA (238s Shell Harmattan) 238S and 373S supervisories are unstable, MDS master super has issue and needs attention 10 Hours
Daily		  
15-May-25 08:00 15-May-25 16:00 ENMAX Outage 1.81L (SS-1 - SS-20), 20.1TR (SS-20), 20B138-1.81 (SS-20), 20MD138-20.1TR (SS-20) spring substation washing. check reversing switch. 8 Hours
Continuous		  
15-May-25 08:00 15-May-25 17:00 ALTALINK TE 35s Protection & Control (35s Rundle), AltaLink RTU/SCADA (AltaLink) MDA card replacement 9 Hours
Daily		  
15-May-25 08:00 16-May-25 20:00 SUNCOR TE 29EDD-60 Protection & Control (29EDD-60 Inglis Island), 29EDD-61 Protection & Control (29EDD-61 Stony Island) 29EDD-60/61 OLRAS time sync alarm - update IRIG B settings 1.5 Days
Continuous		  
15-May-25 08:00 15-May-25 16:00 ENMAX Outage 16.1TR (SS-16) 16 sub 69kV PT outage. power factor test - 16PT69-1 8 Hours
Continuous		  
15-May-25 08:00 15-May-25 17:00 ALTALINK TE 17s Protection & Control (17s Benalto) techs to replace DPS module and complete firmware update/testing 9 Hours
Daily		  
16-May-25 08:00 16-May-25 12:00 ENMAX, ALTALINK Outage 28.80L (42s Sarcee - SS-28), 28.2TR (SS-28), 28B138-28.80 (SS-28), 28MD138-28.2TR (SS-28) spring substation washing and check reversing switch 4 Hours
Continuous		  
16-May-25 08:00 18-May-25 15:00 ATCO Outage 6L03 (757s Battle River - 6L17 tap), 757s 603 (757s Battle River) installing ADSS/ADFO communication cables from 7L701-1 & 6L03-1830 to 6L03 A frame & placing cables in cable tray into control building 2.29 Days
Continuous		  
16-May-25 08:00 16-May-25 12:00 ENMAX, ALTALINK IO 28.80L (42s Sarcee - SS-28), 28.2TR (SS-28), 28B138-28.80 (SS-28), 28MD138-28.2TR (SS-28), SW82 (SS-28) spring substation washing and check reversing switch 4 Hours
Daily		  
16-May-25 08:00 16-May-25 16:00 ENMAX Outage 54.81L (SS-54 - SS-65), 54B138-54.81 (SS-54) hv breaker maintenance - 54B138-54.81 8 Hours
Continuous		  
16-May-25 09:00 16-May-25 17:00 ATCO Outage 7L51 (ATC 793s West Peace River - 927s Buchanan Creek), ATC 793s 701 (ATC 793s West Peace River) emergency outage needed to replace broken structure 8 Hours
Continuous		  
16-May-25 11:00 16-May-25 16:00 ATCO Outage 9L101 (957s McClelland - 2005s Secord), 957s 901 (957s McClelland), 957s 902 (957s McClelland) repair - 957S 900SST1 leak severity 5 Hours
Continuous		  
16-May-25 12:01 16-May-25 18:00 ENMAX Outage 1.80L (SS-1 - SS-28), 28.1TR (SS-28), 28B138-1.80 (SS-28), 28MD138-28.1TR (SS-28) spring substation washing 5.98 Hours
Continuous		  
16-May-25 17:00 16-May-25 19:00 ALTALINK, BCH Outage 786L (799s Coleman - BCH Natal), 1D24 (BCH Natal), 799s 786W (799s Coleman) BCH request 2 Hours
Continuous		 AB-BC
16-May-25 20:01 28-May-25 20:00 SUNCOR Outage 29PL6-7 (30EDD-1 - 29EDD-5), 29PL6-1 (30EDD-1 - 29EDD-55), 30EDD-1 621T (30EDD-1), 30EDD-1 626T (30EDD-1), 30EDD-1 622 (30EDD-1), 30EDD-1 621 (30EDD-1), 30EDD-1 628 (30EDD-1), 30EDD-1 629 (30EDD-1), 30EDD-1 630 (30EDD-1), SPL6-7 (29EDD-5), 30EDD-1 621TD (30EDD-1), 30EDD-1 626TD (30EDD-1), 30EDD-1 625TD (30EDD-1), 30EDD-1 29PL6-1CS (30EDD-1) 29PP-116 d/e/f/g 5 year pm 12 Days
Continuous		  
17-May-25 08:00 17-May-25 12:00 ENMAX, ALTALINK Outage 833L (SS-2 - SS-12), 12B138-833L (SS-12), 12.2TR (SS-12), SW83 (SS-12), 12MD138-12.2TR (SS-12) summer substation washing 4 Hours
Continuous		  
17-May-25 08:00 17-May-25 12:00 ENMAX, ALTALINK IO 833L (SS-2 - SS-12) summer substation washing 4 Hours
Daily		  
17-May-25 09:30 17-May-25 17:30 ATCO TE 731s Protection & Control (731s Elmworth) 7L69 sync check settings update on A and B relays at 731s Elmworth 8 Hours
Continuous		  
17-May-25 12:01 17-May-25 18:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 12.1TR (SS-12), 12B138-832L (SS-12), SW84 (SS-12), 12MD138-12.1TR (SS-12) summer substation washing 5.98 Hours
Continuous		  
17-May-25 12:01 17-May-25 18:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) 12.2TR CT replacement 5.98 Hours
Continuous		  
18-May-25 07:00 25-May-25 17:00 ALTALINK, EPCOR Outage 1055L (629s Argyll Transfer Station - 816s Petrolia), 240BA3 (629s Argyll Transfer Station - 814s Bellamy), 816s P2402 (816s Petrolia), 816s P2403 (816s Petrolia), 816s PDS11 (816s Petrolia) pole refurbishment, doble and disconnect maintenance 7.42 Days
Continuous		  
18-May-25 07:00 25-May-25 17:00 ALTALINK, EPCOR RB 1056L (89s Ellerslie - 629s Argyll Transfer Station) pole refurbishment 7.42 Days
Continuous		  
18-May-25 08:00 18-May-25 12:00 ENMAX, ALTALINK Outage 693L (42s Sarcee - SS-10), 10.2TR (SS-10), 10B138-693 (SS-10), SW84 (SS-10), 10MD138-10.2TR (SS-10), 42s 693 (42s Sarcee) summer substation washing 4 Hours
Continuous		  
18-May-25 08:00 18-May-25 12:00 ENMAX, ALTALINK IO 693L (42s Sarcee - SS-10) summer substation washing 4 Hours
Daily		  
18-May-25 12:01 18-May-25 18:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 10.1TR (SS-10), 10B138-832 (SS-10), SW83 (SS-10), 10MD138-10.1TR (SS-10) summer substation washing 5.98 Hours
Continuous		  
18-May-25 12:01 18-May-25 18:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) summer substation washing 5.98 Hours
Continuous		  
19-May-25 08:00 19-May-25 12:00 ENMAX Outage 6.80L (SS-6 - SS-35), 6B138-6.80 (SS-6), 6.4TR (SS-6), 6MD138-6.4TR (SS-6) summer substation washing. 4 Hours
Continuous		  
19-May-25 08:00 20-May-25 20:00 SUNCOR TE 29EDD-94 Protection & Control (29EDD-94 Voyageur) 29EDD-94H PMU data validation 1.5 Days
Continuous		  
19-May-25 09:30 20-May-25 17:30 ATCO Outage 749s 706 (749s Flyingshot Lake) trip coil testing. 1.33 Days
Continuous		  
19-May-25 12:00 19-May-25 18:00 ENMAX Outage 6.82L (SS-6 - SS-41), 6B138-6.82 (SS-6), 6.1TR (SS-6) summer substation washing. 6 Hours
Continuous		  
20-May-25 07:00 30-May-25 17:00 EPCOR Outage T3 (Rossdale), R723 (Rossdale), R724 (Rossdale) Rossdale: TX3 zone LCR demo outage 10.42 Days
Continuous		  
20-May-25 07:00 21-May-25 17:00 ALTALINK, EPCOR RB 430L (330P Genesee - 510S Sunnybrook) washing program 1.42 Days
Continuous		  
20-May-25 07:00 21-May-25 17:00 ALTALINK, EPCOR RB 430L (330P Genesee - 510S Sunnybrook) washing program 1.42 Days
Daily		  
20-May-25 07:00 21-May-25 17:00 EPCOR Outage 72CK12 (987s Clover Bar - Kennedale), 987s CK725 (987s Clover Bar), K724 (Kennedale) metering upgrade cutovers 1.42 Days
Continuous		  
20-May-25 07:00 22-May-25 16:00 ALTALINK TE 83s Protection & Control (83s Taber), 336s Protection & Control (336s Fincastle) troubleshoot communication issues with 610L ‘B’ protection relays between 83s and 336s. 2.38 Days
Daily		  
20-May-25 07:00 20-May-25 17:00 EPCOR Outage 330p 1202 (330p Genesee) 1202 bay yard lighting upgrade (pole #7) 10 Hours
Continuous		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 421s Protection & Control (421s Hays) A87/50/51/T1 remote setting change being performed 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 428s Protection & Control (428s Namaka) A87/50/51/T1, A87/50/51/T2 remote setting change being performed 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 431s Protection & Control (431s Hussar) A87/50/51NN/T1, A87/50/51NN/T2 remote setting change being performed 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 435s Protection & Control (435s Bassano) A87/50/51/51N/T1 Remote setting change being performed 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 437s Protection & Control (437s Baymag) A87/50/51/T1, A87/50/51/T2 remote setting change being performed 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 422s Protection & Control (422s Westwood) settings change 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 429s Protection & Control (429s Nelson Lake) settings change 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 432s Protection & Control (432s Carvel) settings change 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 438s Protection & Control (438s Westlock) settings change 10 Hours
Daily		  
20-May-25 07:00 20-May-25 17:00 ALTALINK TE 445s Protection & Control (445s Elk River) settings change 10 Hours
Daily		  
20-May-25 07:30 22-May-25 16:30 ALTALINK, ENEL Outage 205s T1 (205s Castle Rock Ridge), 205s 52M1 (205s Castle Rock Ridge), 205s 89T1 (205s Castle Rock Ridge) maintenance 2.38 Days
Continuous		  
20-May-25 07:30 23-May-25 17:30 ALTALINK RB 113L (20s Ghost - 33s Spray) component replacement str 114-193 3.42 Days
Daily		  
20-May-25 08:00 22-May-25 16:00 ATCO RB 7L51 (788s Hotchkiss - 927s Buchanan Creek) climbing inspection 2.33 Days
Continuous		  
20-May-25 08:00 21-May-25 16:00 ENMAX Outage 6.82L (SS-6 - SS-41), 41B138-6.82 (SS-41), 6B138-6.82 (SS-6) HV breaker maintenance - 41B138-6.82 1.33 Days
Continuous		  
20-May-25 08:00 24-May-25 16:00 CMH Outage MHS2 MH69-T22 (MHS-2 North Industrial), MHS-2 MH69-215 (MHS-2 North Industrial) replacement of transformer bushings 4.33 Days
Continuous		  
20-May-25 08:00 21-May-25 16:00 ENMAX Outage 40.2TR (SS-40) tap changer inspection, reversing switch check, oil sampling, oil filtration maintenance 1.33 Days
Continuous		  
20-May-25 08:00 20-May-25 16:00 ENMAX Outage 162.4TR (SS-162), 162B138-RB92 (SS-162), 162B138-RB94 (SS-162), 162MD138-162.4TR (SS-162) power factor test - 162PT138-T4 8 Hours
Continuous		  
20-May-25 08:00 20-May-25 16:00 ENMAX RB 11.82L (SS-11 - SS-14) tree trimming 8 Hours
Continuous		  
20-May-25 09:00 22-May-25 17:00 BCH Outage 2L113 (BCH Cranbrook - BCH Natal), 2D23 (BCH Cranbrook) replace end-of-life timbers, BC maintenance does not affect the Alberta ATC 2.33 Days
Continuous		 AB-BC
20-May-25 09:00 30-May-25 17:00 BCH Outage T3 (BCH Natal), 2CB1 (BCH A. A. Lambert) reconfigure NTL T3 bus connection and cut over to new station equipment 10.33 Days
Continuous		 AB-BC
20-May-25 09:00 22-May-25 18:00 ALTALINK Outage 799L (235s Entwistle - 443s South Mayerthorpe) 799L rebuild 2.38 Days
Continuous		  
20-May-25 09:00 21-May-25 15:00 ALTALINK TE AltaLink Telecom Equipment update GE D25 RTU configuration 30 Hours
Daily		  
20-May-25 09:00 20-May-25 17:00 ALTALINK TE 92s Protection & Control (92s Viscount) remote settings change on 898L B87/21/67N/25SC/L2 & 792L B21/L1 protections 8 Hours
Daily		  
20-May-25 09:30 20-May-25 19:00 ALTALINK TE 191s Protection & Control (191s N.W. Cardiff) remote settings change on 792LS B21/25SC/L2 protection 9.5 Hours
Daily		  
20-May-25 09:30 20-May-25 17:00 ALTALINK TE 37s Protection & Control (37s North Calder) remote settings change on 898L B87/21/79/L10 protection 7.5 Hours
Daily		  
20-May-25 11:00 26-May-25 17:00 ATCO Outage 7L199 (347s AML Fox Creek - 741s ATC Fox Creek), 741s 702 (741s ATC Fox Creek) Fox Creek substation upgrade project
 6.25 Days
Continuous		  
20-May-25 11:00 29-May-25 17:00 ALTALINK Outage 199L (347s AML Fox Creek - 741s ATC Fox Creek) demo old cables, install and terminate new cables, cut over to new protection 9.25 Days
Continuous		  
20-May-25 11:00 22-May-25 17:00 ATCO, ALTALINK RB 9L960 (13s Deerland - 825s Whitefish Lake) climbing inspection 2.25 Days
Continuous		  
20-May-25 11:00 22-May-25 17:00 ATCO, ALTALINK RB 9L961 (13s Deerland - 825s Whitefish Lake) climbing inspection 2.25 Days
Continuous		  
20-May-25 11:00 22-May-25 17:00 ATCO, ALTALINK RB 9L960 (13s Deerland - 825s Whitefish Lake) climbing inspection 2.25 Days
Continuous		  
20-May-25 11:00 22-May-25 17:00 ATCO, ALTALINK RB 9L961 (13s Deerland - 825s Whitefish Lake) climbing inspection 2.25 Days
Continuous		  
21-May-25 07:00 21-May-25 16:00 ALTALINK TE 510s Protection & Control (510s Sunnybrook) PRC relay maintenance 9 Hours
Daily		  
21-May-25 07:00 22-May-25 17:00 EPCOR Outage 330p 1205 (330p Genesee) 1205 bay yard lighting upgrade (pole #8) 1.42 Days
Continuous		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 447s Protection & Control (447s Enchant) A87/50/51/T2 remote setting change being performed 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 454s Protection & Control (454s Buck Lake) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 478s Protection & Control (478s Tucuman) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 508s Protection & Control (508s Lakesend) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 522s Protection & Control (522s Cooking Lake) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 526s Protection & Control (526s Buffalo Creek) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 538s Protection & Control (538s Buford) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 545s Protection & Control (545s Provost) settings change 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 498s Protection & Control (498s Tilley) remote setting change to enable through fault protection on A87/50/51/T2 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 523s Protection & Control (523s Bullshead) remote setting change to enable through fault protection on A87/50/51N/T2 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 525s Protection & Control (525s Carseland) remote setting change to enable through fault protection on A87/50/51/T1 10 Hours
Daily		  
21-May-25 07:00 21-May-25 17:00 ALTALINK TE 534s Protection & Control (534s Eckville) remote setting change to enable through fault protection on A87/50/51/T1 10 Hours
Daily		  
21-May-25 08:00 21-May-25 17:00 ALTALINK TE AltaLink Telecom Equipment replace defective MDA 1 card due to trace error 953L 9 Hours
Daily		  
21-May-25 08:00 21-May-25 17:00 ALTALINK TE AltaLink Telecom Equipment, AltaLink RTU/SCADA (AltaLink) replace damaged cables on radio and upgrade software of the radio hop 9 Hours
Daily		  
21-May-25 08:00 21-May-25 17:00 ALTALINK Outage 65s T2 (65s High River) first trip and major maintenance on 65s2213, replace counter, 65s14X first trip and minor maintenance, replace cooper cutouts on 65s2 9 Hours
Daily		  
21-May-25 08:00 22-May-25 17:00 CENOVUS Outage 539s PCB-9203 (539s Sunday Creek) PRC maintenance 1.38 Days
Continuous		  
21-May-25 08:00 21-May-25 16:00 ENMAX TE Protection & Control (SS-32) power factor test - 32PT138-Z31 8 Hours
Continuous		  
21-May-25 08:00 21-May-25 16:00 ENMAX RB 16.63L (SS-16 - SS-36) tree trimming 8 Hours
Continuous		  
21-May-25 08:00 21-May-25 17:00 ALTALINK TE 118s RTU/SCADA (118s Canmore) RTU outage for the fast trip setting change implementation/point clean up 9 Hours
Daily		  
21-May-25 09:00 29-May-25 20:00 SUNCOR Outage 29EDD-1 T2 (29EDD-1 Millennium) OLTC maintenance and testing, 29EDD-1 T2 72LV arrester replacement 8.46 Days
Continuous		  
21-May-25 09:00 21-May-25 12:30 ATCO, CNRL Outage 847s 902 (847s Muskeg River) PRC-005 - trip coil testing 3.5 Hours
Continuous		  
21-May-25 09:00 21-May-25 12:30 ATCO, CNRL TE 847s Protection & Control (847s Muskeg River) PRC-005 - trip coil testing 3.5 Hours
Continuous		  
21-May-25 09:00 23-May-25 14:00 ENMAX Outage 31.1TR (SS-31) grounding improvements, install new surge arrestor insulator supports 2.21 Days
Continuous		  
21-May-25 09:30 21-May-25 16:00 ATCO TE ATCO Telecom Equipment cutting over traffic from EOL MDR radios to new IRU radios between Chard Substation and Chard Tower 6.5 Hours
Continuous		  
21-May-25 09:30 21-May-25 12:00 ALTALINK TE 746s RTU/SCADA (746s Sherwood Park) updating the supervisory circuit to a VPRN circuit 2.5 Hours
Daily		  
21-May-25 10:00 21-May-25 12:00 SUNCOR TE 29EDD-65 Protection & Control (29EDD-65) replacing module due to 29-952-4812 50BF card failure UR-8LH 2 Hours
Continuous		  
21-May-25 10:00 21-May-25 14:00 ATCO TE ATCO Telecom Equipment, 741s RTU/SCADA (741s Fox Creek) Fox Creek_S-Telecom- adding in a second switch for more comm ports 4 Hours
Continuous		  
21-May-25 11:00 23-May-25 16:00 ATCO Outage 789s 706C (789s Keg River) breaker SF6 HPL complete testing 2.21 Days
Continuous		  
21-May-25 13:00 21-May-25 17:00 ATCO, CNRL Outage 847s 903 (847s Muskeg River) PRC-005 - trip coil testing 4 Hours
Continuous		  
21-May-25 13:00 21-May-25 17:00 ATCO, CNRL TE 847s Protection & Control (847s Muskeg River) PRC-005 - trip coil testing 4 Hours
Continuous		  
22-May-25 07:00 23-May-25 17:00 EPCOR RB 746AL (524s Owens Corning - 746L tap) washing program 1.42 Days
Continuous		  
22-May-25 07:00 23-May-25 17:00 ALTALINK RB 731L (420s Broadmoor - 746L tap), 746L (731L tap - 746BL tap), 731L (38s East Edmonton - 746L tap) washing program 1.42 Days
Daily		  
22-May-25 07:00 22-May-25 19:00 ALTALINK Outage 736L (38s East Edmonton - 293s Bernese), 293s T1 (293s Bernese), 293s T2 (293s Bernese), 38s 736E (38s East Edmonton), 293s 152 (293s Bernese), 293s 252 (293s Bernese) urgent outage to replace leaking CT 12 Hours
Daily		  
22-May-25 07:00 23-May-25 17:00 EPCOR Outage 72CK13 (987s Clover Bar - Kennedale), 987s CK726 (987s Clover Bar), K721 (Kennedale), KDS1 (Kennedale) CK13: metering upgrade cutovers 1.42 Days
Continuous		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 574s Protection & Control (574s Nilrem) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 595s Protection & Control (595s Spruce Grove) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 602s Protection & Control (602s Cold Creek) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 635s Protection & Control (635s Rose Valley) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 651s Protection & Control (651s Kirby) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 818s Protection & Control (818s Winefred) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 899s Protection & Control (899s Edgerton) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 993s Protection & Control (993s Abee) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 1012s Protection & Control (1012s Deer Hill) settings change 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 678s Protection & Control (678s Okotoks) remote setting change to enable through fault protection on A87/50/51/T1 & B87/50/51/T3. momentary alarm as settings are changed on relay. 10 Hours
Daily		  
22-May-25 07:00 22-May-25 17:00 ALTALINK TE 580s Protection & Control (580s Sylvan Lake) remote setting change to enable through fault protection on A87/50/51/51N/T1 & A87/50/51/51N/T2. momentary alarm as settings are changed on relay. 10 Hours
Daily		  
22-May-25 07:00 25-May-25 19:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) stringing activities on CETO project adjacent to 9L20 3.5 Days
Daily		  
22-May-25 07:30 22-May-25 17:30 ALTALINK TE 899s RTU/SCADA (899s Edgerton) update configuration to implement controls 10 Hours
Daily		  
22-May-25 08:00 22-May-25 16:00 ENMAX Outage 26B138-26BT3 (SS-26) high voltage breaker maintenance - 26B138-26BT3 8 Hours
Continuous		  
22-May-25 08:00 22-May-25 17:30 ALTALINK Outage 331s 422 (331s Ponoka), 422L (288s Wolf Creek - 331s Ponoka) test "B" phase CT's, update firmware on "B" prot and upgrade DSP card from 8F to 8L 9.5 Hours
Daily		  
22-May-25 08:00 22-May-25 16:00 ENMAX Outage 38.3TR (SS-38) investigate TR secondary cables in secondary cabinet and cell. 8 Hours
Continuous		  
22-May-25 08:00 22-May-25 17:00 ALTALINK TE 115s RTU/SCADA (115s Mount Allan) RTU outage for the FORTIS fast trip setting change implementation and point on the SCN sign off. 9 Hours
Daily		  
22-May-25 08:00 22-May-25 16:00 ENMAX RB 21.61L (SS-21 - SS-34) tree trimming 8 Hours
Continuous		  
22-May-25 08:30 22-May-25 17:00 ALTALINK TE 288s Protection & Control (288s Wolf Creek) update F/W and replace DSP card from 8F to 8L 8.5 Hours
Daily		  
22-May-25 09:00 22-May-25 12:30 ATCO, CNRL Outage 847s 904 (847s Muskeg River) PRC-005 - trip coil testing 3.5 Hours
Continuous		  
22-May-25 09:00 22-May-25 12:30 ATCO, CNRL TE 847s Protection & Control (847s Muskeg River) PRC-005 - trip coil testing. 3.5 Hours
Continuous		  
22-May-25 11:00 22-May-25 16:30 ALTALINK Outage 899s T3 (899s Edgerton) implement controls for 899s24 and alarm separation for both 25 kV Breakers 899s373W and 899s95E 5.5 Hours
Daily		  
22-May-25 13:00 22-May-25 17:00 ATCO, CNRL Outage 847s 901 (847s Muskeg River) PRC-005 - trip coil testing 4 Hours
Continuous		  
22-May-25 13:00 22-May-25 17:00 ATCO, CNRL TE 847s Protection & Control (847s Muskeg River) PRC-005 - trip coil testing. 4 Hours
Continuous		  
23-May-25 07:00 24-May-25 17:00 EPCOR Outage 330p 1208 (330p Genesee) Genesee: 1208 bay yard lighting upgrade (Pole #9) 1.42 Days
Continuous		  
23-May-25 08:00 24-May-25 16:00 ENMAX Outage 33.84L (SS-33 - SS-43), 33B138-33.84 (SS-33), 43B138-33.84 (SS-43) sheath & oil testing 1.33 Days
Continuous		  
23-May-25 08:00 23-May-25 16:00 ENMAX RB 16.60L (SS-16 - SS-34) tree trimming 8 Hours
Continuous		  
23-May-25 10:00 23-May-25 17:00 ATCO RB 7L90 (813s Little Smoky - 7LA90 tap), 7L90 (741s ATC Fox Creek - 7LA90 tap) permanently disconnect 700PT2 from 144kV bus 7 Hours
Continuous		  
23-May-25 11:00 23-May-25 17:00 ALTALINK Outage 33s 138kV Bus (33s Spray), 113L (20s Ghost - 33s Spray), 76L (33s Spray - 115s Mount Allan), 84L (33s Spray - 35s Rundle Plant), 33s 113 (33s Spray), 33s 76 (33s Spray), 33s 84 (33s Spray), 20s 113 (20s Ghost), 115s 76LX (115s Mount Allan), 35s 84 (35s Rundle Plant) 33s hot bus LA's. 6 Hours
Daily		  
23-May-25 14:00 02-Jun-25 10:00 ENMAX, ALTALINK Outage 1109L (SS-25 - SS-65), 25B240-D136 (SS-25), 25B240-D139 (SS-25), 25B240-D133 (SS-25), 25B240-D141 (SS-25), 25B240-D142 (SS-25), 25MD240-1109 (SS-25) cable testing, close cable open points on 1109L and salvage temp O/H 1109L. expanding zone to include 1109L C25s bus. Enmax grounding required, and Enmax to close 1109L risers removed from bus to potthead. soak test June 2nd 10:00 9.83 Days
Continuous		  
23-May-25 14:00 03-Jun-25 12:00 ENMAX, ALTALINK IO 240kV West Bus (SS-25), 1109L (SS-25 - SS-65) Altalink outage. Cable testing, close cable open points on 1109L and salvage Temp O/H 1109L. Expanding zone to include 1109L C25s Bus. Enmax grounding required, and Enmax to close 1109L risers removed from bus to potthead. Soak test June 2nd 10:00 10.92 Days
Continuous		  

Prepared On:   2025-05-20   21:14:01

This document and the information contained herein are based upon information and data which by their nature contain a degree of uncertainty and are subject to change. In addition, this document may contain information and data from public sources and/or third parties, which have been assumed to be accurate and complete and have not been verified. Accordingly, the Independent System Operator, operating as the Alberta Electric System Operator (the "AESO") makes no warranty, representation or guarantee, express or implied, with respect to this document or the information contained herein, including, but not limited to, any warranty, representation or guarantee of accuracy, completeness, timeliness, reliability, availability, absence of computer virus, non- infringement, merchantability or suitability for any purpose. Under no circumstances will the AESO, its members, officers, employees, contractors or agents, or any of their respective affiliates, be liable for any errors or omissions in, or any losses, damages or claims whatsoever, whether in contract, tort or otherwise, arising from use of or reliance upon, this document or any information contained herein.

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