Alberta Electric System Operator
System Co-ordination Plan
2025-01-16 to 2025-01-24
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 07-Mar-25 16:00 ENMAX Outage 32.2TR (SS-32) 32 sub 32.2TR 8 kV bus switchgear demolition 466.33 Days
Continuous		  
06-May-24 07:00 21-Jan-25 17:00 EPCOR Outage EP 511s Victoria T1 (EP 511s Victoria) Victoria: TX1 LCR, civil, demo, and construction 260.46 Days
Continuous		  
26-Jul-24 10:00 31-Mar-25 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency removal to replace failed 502R @834S 248.25 Days
Continuous		  
12-Aug-24 08:00 14-Feb-25 16:00 ENMAX Outage 28.1TR (SS-28) 28.1TR transformer replacement 186.38 Days
Continuous		  
23-Aug-24 13:45 30-Apr-25 14:29 ALTALINK Outage 157s C1 (157s Lac La Biche) forced outage 250.03 Days
Continuous		  
27-Aug-24 10:00 20-Jan-25 08:00 ALTALINK Outage 244s C1 (244s Bowmanton) construction of new cap C1. 145.96 Days
Continuous		  
27-Aug-24 10:00 20-Jan-25 08:00 ALTALINK Outage 244s C2 (244s Bowmanton) construction of new cap C2. 145.96 Days
Continuous		  
27-Aug-24 10:00 20-Jan-25 08:00 ALTALINK Outage 244s C3 (244s Bowmanton) construction of new cap C3 145.96 Days
Continuous		  
23-Sep-24 10:00 15-May-25 12:00 ATCO TE 741s RTU/SCADA (741s Fox Creek) RTU configuration on new and old RTU's onsite 234.08 Days
Continuous		  
04-Oct-24 01:05 05-May-25 12:00 ATCO, ALTALINK Outage 840s McNeill Station, 830L (562s Cypress - 840s McNeill Station), 840s 701T (840s McNeill Station), 840s 901T (840s McNeill Station), 840s 702C (840s McNeill Station), 840s 703C (840s McNeill Station) forced outage 213.45 Days
Continuous		 AB-SK
05-Oct-24 00:00 30-Apr-25 17:00 BHE Canada Outage 120s C1 (120s Picture Butte) forced outage 207.71 Days
Continuous		  
21-Oct-24 10:00 03-Feb-25 14:00 ATCO Outage 741s 504C (741s Fox Creek), 741S 504 (741s ATC Fox Creek) oil sample required to verify PCB content, prior to completing breaker replacement 105.21 Days
Continuous		  
21-Oct-24 12:00 12-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 203.23 Days
Continuous		  
28-Oct-24 07:00 14-Feb-25 17:00 EPCOR TE EP 511s Protection & Control (EP 511s Victoria) protection blocking for protection upgrade and annual maintenance 109.46 Days
Continuous		  
08-Nov-24 16:00 07-Feb-25 17:00 EPCOR Outage 816s P2404 (816s Petrolia) P2404 vendor gas mixture repair 91.04 Days
Continuous		  
26-Dec-24 17:07 13-Feb-25 18:00 ALTALINK Outage 38s C1 (38s East Edmonton) forced outage 49.04 Days
Continuous		  
26-Dec-24 17:07 31-Jan-25 18:00 ALTALINK Outage 256s C1 (256s Harmattan) forced outage 36.04 Days
Continuous		  
03-Jan-25 07:00 07-Mar-25 17:00 EPCOR TE 805s Protection & Control (805s Jasper), 805s RTU/SCADA (805s Jasper) protection blocking for P&C maintenance at Jasper 63.42 Days
Continuous		  
06-Jan-25 07:00 24-Jan-25 17:00 EPCOR Outage 72MG16 (Garneau - Meadowlark), T2 (Garneau), G721 (Garneau), G725 (Garneau), G726 (Garneau), GDS17 (Garneau), GAB2 (Garneau), M725 (Meadowlark) garneau 72kv Switchgear SF6 overhaul 18.42 Days
Continuous		  
06-Jan-25 09:30 21-Jun-25 18:00 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. 166.31 Days
Continuous		  
07-Jan-25 07:00 22-Jan-25 19:00 ATCO RB 6L02 (769s Stettler - 873s Marion Lake), 6L02 (765s Mannix Mine - 873s Marion Lake), 6L02 (757s Battle River - 765s Mannix Mine) stringing of 9L68/9L86 for 1030230 CETO 15.5 Days
Continuous		  
11-Jan-25 07:00 16-Jan-25 17:30 ALTALINK TE 244s RTU/SCADA (244s Bowmanton) update RTU for voltage support project 5.44 Days
Daily		  
13-Jan-25 07:00 07-Feb-25 17:00 EPCOR Outage T1 (Meadowlark) meadowlark tx1 bay outage 25.42 Days
Continuous		  
13-Jan-25 07:00 14-Mar-25 17:00 EPCOR Outage 987s T2 (987s Clover Bar), 987s C2406 (987s Clover Bar), 987s C2410 (987s Clover Bar), 987s C2409 (987s Clover Bar), 987s CC721 (987s Clover Bar), 987s CDS45 (987s Cloverbar), 987s CDS31 (987s Clover Bar) Cloverbar TX2 and 1191L bay outage 60.38 Days
Continuous		  
13-Jan-25 07:00 17-Jan-25 17:00 EPCOR TE Protection & Control (Kennedale) kennedale: 72kV breaker fail protection blocking for P&C maintenance 4.42 Days
Continuous		  
13-Jan-25 07:00 17-Jan-25 17:00 EPCOR TE Protection & Control (Kennedale) kennedale: 72KN23 line protection blocking for P&C maintenance 4.42 Days
Continuous		  
13-Jan-25 07:00 19-Jan-25 18:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) CETO project - to facilitate various construction activities which parallel the line 6.46 Days
Continuous		  
13-Jan-25 07:00 04-Apr-25 17:00 EPCOR TE 330p Protection & Control (330p Genesee), 330p RTU/SCADA (330p Genesee) Genessee - 138/500 kV protection blocking for relay maintenance and configuration changes 81.38 Days
Continuous		  
13-Jan-25 07:30 16-Jan-25 17:30 ALTALINK RB 202L (178s Cynthia - 202AL tap), 202L (61s Lodgepole - 202AL tap) urgent live line work to install clampstars on hot sleeves at str 337, 353 and 364 3.42 Days
Daily		  
13-Jan-25 08:00 02-Feb-25 16:00 ENMAX Outage 2.83L (SS-13 - 2.83L tap), 3.84L (SS-3 - SS-13), 13.1TR (SS-13), 13.3TR (SS-13), 13B138-3.84 (SS-13), 13B138-2.83 (SS-13), 3B138-3.84 (SS-3), 13MD138-13.1TR (SS-13), 13MD138-13.3TR (SS-13) hv sw replacement 20.33 Days
Continuous		  
13-Jan-25 08:00 21-Jan-25 17:00 ALTALINK RB 610L (83s Taber - 336s Fincastle) setting structures adjacent to existing 610L (str 1-102) due to proximity for VATD project 8.38 Days
Daily		  
13-Jan-25 08:00 17-Jan-25 16:00 ENMAX TE 3.84L (SS-3 - SS-13) 3.84L A and B line protection - relay testing 4.33 Days
Continuous		  
13-Jan-25 08:00 16-Jan-25 17:00 ALTALINK TE 213s RTU/SCADA (213s Hughenden) RTU configuration for new substation security alarms 3.38 Days
Daily		  
13-Jan-25 09:30 17-Jan-25 17:30 ATCO TE 774s Protection & Control (774s Monitor) relay testing 4.33 Days
Continuous		  
13-Jan-25 10:00 17-Jan-25 16:30 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap), 7L50 (757s Battle River - 491L tap) 7L50 pole and arm replacement using live line techniques 4.27 Days
Continuous		  
13-Jan-25 10:00 17-Jan-25 16:30 ATCO, ALTALINK RB 7L50 (526s Buffalo Creek - 491L tap) ATCO work - 7L50 pole and arm replacement using live line techniques 4.27 Days
Daily		  
13-Jan-25 12:00 17-Jan-25 16:00 ATCO TE 951s RTU/SCADA (951s Thickwood Hills), 951s Protection & Control (951s Thickwood Hills) update settings and configure files for RAS A & B/951s relays,
RTU updates required		 4.17 Days
Continuous		  
13-Jan-25 12:00 31-Jan-25 14:00 ATCO TE 820s Protection & Control (820s Hangingstone) PRC005 relay testing, all 144kV breaker fail relays 18.08 Days
Continuous		  
13-Jan-25 12:00 07-Feb-25 16:00 ATCO TE 905s Protection & Control (905s Meikle) testing breaker fail relays, 25.17 Days
Continuous		  
13-Jan-25 12:30 16-Jan-25 17:30 REDDEER Outage 217s T2 (217s North Red Deer) replace koncar cts 3.21 Days
Continuous		  
13-Jan-25 13:30 17-Jan-25 16:00 ATCO TE 939s RTU/SCADA (939s Livock), 939s Protection & Control (939s Livock) update settings and configure files for RAS A & B/939s relays,
RTU updates required		 4.1 Days
Continuous		  
14-Jan-25 09:00 17-Jan-25 16:00 ATCO TE 888s RTU/SCADA (888s Dover), 888s Protection & Control (888s Dover) update settings and configure files for RAS A & B/9L74 at 888S relays,
RTU updates required		 3.29 Days
Continuous		  
15-Jan-25 07:00 16-Jan-25 17:00 ALTALINK TE 38s RTU/SCADA (38s East Edmonton) cutover new alarms, controls, and statuses for 38s736E to new SCADA system 1.42 Days
Daily		  
15-Jan-25 08:00 16-Jan-25 16:00 ENMAX Outage 15.60L (SS-15 - SS-21), 15.1TR (SS-15), 15B69-15.60 (SS-15), 21B69-15.60 (SS-21), 15MD69-15.1TR (SS-15) HV switch maintenance, check reversing switch 1.33 Days
Continuous		  
15-Jan-25 08:00 16-Jan-25 17:00 ALTALINK TE 428s Protection & Control (428s Namaka) perform relay maintenance 1.38 Days
Daily		  
15-Jan-25 08:00 17-Jan-25 18:00 SUNCOR TE SUNCOR ICCP Outage (BP) Abin - SCADA site failover to switch between Suncor Main (SDC) and Backup control centers (BCC). this is to implement ICCP servers. (server migration from VM to Physical.)
 2.42 Days
Continuous		  
15-Jan-25 09:00 20-Jan-25 16:00 ATCO RB 9L10 (876s Brintnell - 939s Livock) installing bucket piles as preparation for the outage 5.29 Days
Continuous		  
15-Jan-25 09:00 16-Jan-25 16:00 ATCO TE 905s Protection & Control (905s Meikle) PRC 21A/7L120, 21B/7L120 relay testing
 31 Hours
Continuous		  
16-Jan-25 07:00 16-Jan-25 17:00 EPCOR Outage 72CK12 (987s Clover Bar - Kennedale), K724 (Kennedale) switching school training 10 Hours
Continuous		  
16-Jan-25 07:00 17-Jan-25 17:00 EPCOR Outage 72RV2 (EP 511s Victoria - Rossdale), RV728 (Rossdale) apparatus breaker and P&C maintenance 1.42 Days
Continuous		  
16-Jan-25 07:00 19-Jan-25 17:00 ALTALINK TE 54s RTU/SCADA (54s Fort Saskatchewan) update configuration for new wave form monitor alarms 3.42 Days
Daily		  
16-Jan-25 07:00 19-Jan-25 17:00 ALTALINK TE 410s RTU/SCADA (410s Josephburg) update configuration for new wave form monitor alarms 3.42 Days
Daily		  
16-Jan-25 07:30 16-Jan-25 17:30 ALTALINK IO 199L (347s AML Fox Creek - 741s ATC Fox Creek) ATCO to perform urgent repair to hot sleeves 10 Hours
Daily		  
16-Jan-25 08:00 16-Jan-25 17:00 ALTALINK TE 618s RTU/SCADA (618s Riverbend) install/commission new LAN-ES1 RST2228 & LAN-PS1 RS416 9 Hours
Daily		  
16-Jan-25 08:00 16-Jan-25 17:00 ALTALINK TE 191s Protection & Control (191s N.W. Cardiff) perform PRC relay maintenance on 792L 9 Hours
Daily		  
16-Jan-25 08:00 16-Jan-25 17:00 ATCO, ALTALINK Outage 7L199 (347s AML Fox Creek - 741s ATC Fox Creek), 347s 199W (347s AML Fox Creek), 741s 702 (741s ATC Fox Creek) emergency outage to repair line splices 9 Hours
Continuous		  
17-Jan-25 08:00 17-Jan-25 18:00 ENMAX Outage 1.84L (SS-1 - SS-5), 5B138-1.84 (SS-5) HV switch maintenance, 5SW99, 5SW84G - 5 Sub - 1.84L - enable interlock 10 Hours
Continuous		  
17-Jan-25 08:00 19-Jan-25 19:00 ENMAX, ALTALINK Outage 50L (44s Bearspaw Plant - SS-21), 60s50 (SS-21), 44s 50X (44s Bearspaw Plant) urgent replace CTs at breaker 2.46 Days
Continuous		  
17-Jan-25 08:00 19-Jan-25 16:00 ENMAX Outage 21.4TR (SS-21) remove 21sub bus differential relay from service - Altalink 60s50 CT replacement 2.33 Days
Continuous		  
17-Jan-25 08:00 19-Jan-25 16:00 ENMAX TE Protection & Control (SS-21) 21sub 138 kV bus differential protection outage - Altalink 60s50 CT replacement 2.33 Days
Continuous		  
17-Jan-25 08:00 19-Jan-25 16:00 ENMAX Outage 21.1C (SS-21) remove 21sub bus differential relay from service - Altalink 60s50 CT replacement 2.33 Days
Continuous		  
17-Jan-25 10:00 17-Jan-25 17:00 ATCO RB 7L90 (813s Little Smoky - 7LA90 tap), 7L90 (741s ATC Fox Creek - 7LA90 tap) tap up Mobile Sub 902S to 7L90 for 741S Fox Creek substation rebuild 7 Hours
Continuous		  
18-Jan-25 08:00 19-Jan-25 18:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 2.83L (SS-2 - 2.83L tap), 5.9TR (SS-5), 5.10TR (SS-5), 5MD138-5.10TR (SS-5), 5MD138-5.9TR (SS-5), 5B138-5BT12 (SS-5), 5B138-2.83 (SS-5) HV SW maintenance, check reversing switch 5.9TR, 5.10TR 1.42 Days
Continuous		  
20-Jan-25 07:00 26-Jan-25 18:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) HOP on 9L20 for remainder of construction on CETO project to facilitate various construction activities which parallel the line 6.46 Days
Continuous		  
20-Jan-25 07:00 31-Jan-25 17:30 ALTALINK TE 244s RTU/SCADA (244s Bowmanton) update RTU for voltage support project 11.44 Days
Daily		  
20-Jan-25 07:00 20-Jan-25 12:00 EPCOR Outage 72CH9 (987s Clover Bar - EP Hardisty), 987s CH722 (987s Clover Bar) cloverbar ch722 relay maintenance 5 Hours
Continuous		  
20-Jan-25 07:00 20-Jan-25 17:00 EPCOR Outage VHBB2 (Rossdale) rossdale VHBB2 relay maintenance 10 Hours
Continuous		  
20-Jan-25 07:30 23-Jan-25 17:30 ATCO RB 9L1035 (244s Bowmanton - 2075s Newell) perform splicing on 1034L97 structure in existing canister for new fibre cable to 498s 3.42 Days
Continuous		  
20-Jan-25 07:30 23-Jan-25 17:30 ALTALINK RB 1034L (244s Bowmanton - 324s Cassils) perform splicing on 1034L97 structure in existing canister for new fibre cable to 498s 3.42 Days
Daily		  
20-Jan-25 07:30 23-Jan-25 17:30 ATCO, ALTALINK RB 1035L (244s Bowmanton - 2075s Newell) perform splicing on 1034L97 structure in existing canister for new fibre cable to 498s 3.42 Days
Daily		  
20-Jan-25 07:30 23-Jan-25 16:30 ENMAX, ALTALINK Outage 918L (281s Johnson - SS-162), 162B240-RB132 (SS-162), 162B240-RB133 (SS-162), 162MD240-918L (SS-162) 162 substation -surge arrester addition 3.38 Days
Continuous		  
20-Jan-25 08:00 27-Jan-25 16:00 ATCO RB 6L16 (724s Hines Creek - 861s Eureka River) changing rotten poles from test & treat 7.33 Days
Continuous		  
20-Jan-25 08:00 23-Jan-25 17:30 ATCO RB 7L09 tap change rotten cross arms and poles using live line techniques 3.4 Days
Continuous		  
20-Jan-25 08:00 21-Jan-25 16:00 ENMAX Outage 33.1TR (SS-33), 33.83L (SS-33 - SS-41), 33B138-33.83 (SS-33), 41B138-33.83 (SS-41) HV SW maintainance. 33SW81, 33SW82, 33SW83, MD-33.1TR. oil sampling MT, TC. check reversing switch. 1.33 Days
Continuous		  
20-Jan-25 08:00 31-Jan-25 16:00 ENMAX Outage 16.60L (SS-16 - SS-34), 16B69-16.60 (SS-16), 34B69-16.60 (SS-34) 16 & 34 Sub 16.60 line protection replacement 11.33 Days
Continuous		  
20-Jan-25 08:00 23-Jan-25 16:00 ENMAX, ALTALINK Outage 918L (281s Johnson - SS-162), 162B240-RB132 (SS-162), 162B240-RB133 (SS-162), 162MD240-918L (SS-162) 162 substation -surge arrester addition 3.33 Days
Continuous		  
20-Jan-25 08:00 10-Feb-25 17:00 ATCO IO 809s RTU/SCADA (809s Louise Creek) station controller (RTU) requires a firmware upgrade for CIP compliance 21.38 Days
Continuous		  
20-Jan-25 08:00 21-Jan-25 16:00 ENMAX TE Protection & Control (SS-7) relay protection test 1.33 Days
Continuous		  
20-Jan-25 08:00 23-Jan-25 16:00 ENMAX Outage 9.2TR (SS-9) relay protection test - 9RLY138-9.2TR A GE, 9RLY138-9.2TR S SEL. relay protection Test - 9RLY8-9.2TR 3.33 Days
Continuous		  
20-Jan-25 09:00 24-Jan-25 17:30 ATCO TE 963s Protection & Control (963s Coyote Lake), 963s RTU/SCADA (963s Coyote Lake) 7L128 DLR project

SCADA updates
- change internal RAS alarm logic in SCADA program
- soft controls updates to enable/disable RAS 203 relay settings updates
- RAS A, B/7L128 logic updates
 4.35 Days
Continuous		  
20-Jan-25 09:00 21-Jan-25 17:00 ALTALINK TE 39s Protection & Control (39s Bickerdike), 58s Protection & Control (58s Edson) techs to replace dsp modules and upgrade firmware on 740L A protection 1.33 Days
Daily		  
20-Jan-25 09:30 24-Jan-25 17:30 ATCO TE 774s Protection & Control (774s Monitor) relay testing 4.33 Days
Continuous		  
20-Jan-25 09:30 24-Jan-25 17:30 ATCO TE 813s Protection & Control (813s Little Smoky) PRC-005 - aux trip relay testing 4.33 Days
Continuous		  
20-Jan-25 10:00 24-Jan-25 12:00 ATCO Outage 741s 701T (741s Fox Creek), 741s 701 (741s ATC Fox Creek), 741s 702 (741s ATC Fox Creek), 741s 702T (741s Fox Creek), 741s 703 (741s ATC Fox Creek), 741s 704 (741s ATC Fox Creek), 741s 705C (741s Fox Creek), 741s 705 (741s ATC Fox Creek), 7L90 (741s ATC Fox Creek - 7LA90 tap), 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) Install new 144kV PT to 144kV bus in a new location. 4.08 Days
Continuous		  
20-Jan-25 10:00 23-Jan-25 16:30 ATCO, ALTALINK Outage 7L129 (526s Buffalo Creek - 7LA129 tap) Replace structures, cross arms and insulators on 7L129 3.27 Days
Continuous		  
20-Jan-25 10:00 20-Jan-25 17:30 ATCO TE 813s Protection & Control (813s Little Smoky) 21A_50BF/7L90 and 21B_50BF/7L90 protections at 813s to be isolated one a time to implement temporary settings for 741s mobile sub. 7.5 Hours
Continuous		  
20-Jan-25 10:00 23-Jan-25 16:30 ATCO, ALTALINK Outage 7L129 (526s Buffalo Creek - 7LA129 tap), 526s 152 (526s Buffalo Creek) replace structures, cross arms and insulators on 7L129 3.27 Days
Continuous		  
20-Jan-25 10:00 23-Jan-25 16:00 ATCO TE 751s Protection & Control (751s Hill) 701T and 702T relay testing 3.25 Days
Continuous		  
20-Jan-25 10:00 21-Jan-25 17:00 ATCO TE 809s Protection & Control (809s Louise Creek) 21B/7L19 firmware upgrade for CIP compliance 31 Hours
Continuous		  
20-Jan-25 10:00 21-Jan-25 17:00 ATCO TE 809s Protection & Control (809s Louise Creek) 21B/9L40 firmware upgrade for CIP compliance 31 Hours
Continuous		  
20-Jan-25 11:00 21-Jan-25 17:00 ALTALINK TE 40s Protection & Control (40s Wetaskiwin) standard relay maintenance 30 Hours
Daily		  
20-Jan-25 12:00 21-Jan-25 18:00 ALTALINK Outage 190L (17s Benalto - 320p Keephills) component replacement on 190L 30 Hours
Continuous		  
20-Jan-25 12:00 22-Jan-25 16:00 ATCO TE 2049s Protection & Control (2049s Kettle River), 2049s RTU/SCADA (2049s Kettle River) update 240kv transformer protection relays 2.17 Days
Continuous		  
20-Jan-25 12:00 20-Jan-25 16:00 ENMAX TE Protection & Control (SS-34) line protection replacement 4 Hours
Continuous		  
20-Jan-25 12:00 21-Jan-25 16:00 ATCO TE 820s Protection & Control (820s Hangingstone) PRC005 relay testing on 7L135 A&B 28 Hours
Continuous		  
20-Jan-25 12:00 20-Jan-25 17:00 EPCOR Outage 72CH11 (987s Clover Bar - EP Hardisty), 987s CH724 (987s Clover Bar) cloverbar ch724 relay maintenance 5 Hours
Continuous		  
20-Jan-25 14:00 27-Jan-25 10:00 ATCO Outage 7L23 (796s Nipisi - 7L23 tap), 7L23 (732s Mitsue - 7L23 tap), 796s 702 (796s Nipisi), 858S 701TD (858s Narrows Creek) complete CAR cross arm replacements & TCM wood pole replacements 6.83 Days
Continuous		  
21-Jan-25 07:00 21-Jan-25 12:00 EPCOR Outage 814s T1 (814s Bellamy), BR721 (Rossdale) relay maintenance 5 Hours
Continuous		  
21-Jan-25 07:00 21-Jan-25 12:00 EPCOR Outage 72CK12 (987s Clover Bar - Kennedale), 987s CK725 (987s Clover Bar), K724 (Kennedale) relay maintenance 5 Hours
Continuous		  
21-Jan-25 08:00 21-Jan-25 16:00 ENMAX TE Protection & Control (SS-16) 16 & 34 sub 16.60 line protection replacement 8 Hours
Continuous		  
21-Jan-25 08:00 21-Jan-25 17:00 ALTALINK TE 99s RTU/SCADA (99s North St. Albert) troubleshoot aprisa radio due to issues with receive level 9 Hours
Daily		  
21-Jan-25 08:00 21-Jan-25 17:00 ALTALINK TE 434s RTU/SCADA (434s Stony Plain), 434s Protection & Control (434s Stony Plain) radio maintenance 9 Hours
Daily		  
21-Jan-25 08:30 26-Jan-25 16:00 ATCO TE 801s Protection & Control (801s Anderson), 801s RTU/SCADA (801s Anderson) Relay Firmware upgrades and relay testing on relays 21B/7L85, 50BF/704, 50BF/705, 50BF/711, 87BA/700BS1 5.31 Days
Continuous		  
21-Jan-25 09:00 21-Jan-25 17:00 ALTALINK TE 253s RTU/SCADA (253s Blackie) swap slot board on LAN-ES2A ethernet switch (Ruggedcomm RSG2488) to clear SubLan trouble alarm 8 Hours
Continuous		  
21-Jan-25 10:00 22-Jan-25 16:00 ATCO TE 905s Protection & Control (905s Meikle) PRC relay testing 21A/7L106, 21B/7L106
 30 Hours
Continuous		  
21-Jan-25 12:00 21-Jan-25 17:00 EPCOR Outage VHBB1 (Rossdale) relay maintenance 5 Hours
Continuous		  
21-Jan-25 12:00 21-Jan-25 17:00 EPCOR Outage 72CK13 (987s Clover Bar - Kennedale), 987s CK726 (987s Clover Bar), K721 (Kennedale) Cloverbar: CK726 Relay Maintenance 5 Hours
Continuous		  
22-Jan-25 07:00 22-Jan-25 12:00 EPCOR Outage 987s C1 (987s Clover Bar), 987s C72C1 (987s Clover Bar) relay maintenance 5 Hours
Continuous		  
22-Jan-25 08:00 23-Jan-25 16:00 ENMAX Outage 33.84L (SS-33 - SS-43), 33.2TR (SS-33), 33B138-33.84 (SS-33), 43B138-33.84 (SS-43) HV SW Maint. 33SW84, 33SW85, 33SW86, MD-33.2TR. oil sampling MT, TC. check reversing switch. 1.33 Days
Continuous		  
22-Jan-25 08:00 22-Jan-25 16:00 ENMAX TE Protection & Control (SS-16) 16sub 69kV bus differential protection outage. 16 & 34 Sub 16.60 line protection replacement 8 Hours
Continuous		  
22-Jan-25 08:00 22-Jan-25 16:00 ENMAX TE Protection & Control (SS-16) 16sub 69kV auto switching scheme outage. 16 & 34 Sub 16.60 line protection replacement 8 Hours
Continuous		  
22-Jan-25 08:00 22-Jan-25 16:00 ENMAX TE Protection & Control (SS-34) 34 sub 69kV bus differential protection outage. 16 & 34 Sub 16.60 line protection replacement 8 Hours
Continuous		  
22-Jan-25 08:00 22-Jan-25 16:00 ENMAX TE Protection & Control (SS-34) 34sub 69kV auto switching scheme outage. 16 & 34 Sub 16.60 line protection replacement 8 Hours
Continuous		  
22-Jan-25 08:00 23-Jan-25 17:00 ATCO TE 809s Protection & Control (809s Louise Creek) 21B/7L55 firmware upgrade for CIP compliance 1.38 Days
Continuous		  
22-Jan-25 08:00 23-Jan-25 17:00 ATCO TE 809s Protection & Control (809s Louise Creek) 51NGR/902T firmware upgrade for CIP compliance 1.38 Days
Continuous		  
22-Jan-25 08:00 22-Jan-25 20:00 SUNCOR IO 29PL6-6 (29EDD-1 Millennium - 29EDD-2 Tar Island) BP (Corey) - 29PL6-6 43CS-87L B removal of maintenance switch - 300461822 12 Hours
Continuous		  
22-Jan-25 08:00 23-Jan-25 16:00 ENMAX TE Protection & Control (SS-7) 7sub C30 138kV auto switching protection outage. relay protection test - 7RLY138-7.ASW 1.33 Days
Continuous		  
22-Jan-25 09:00 22-Jan-25 19:00 ATCO TE ATCO Telecom Equipment Holden Telecom
Full building Equipment Cutover		 10 Hours
Continuous		  
22-Jan-25 09:00 24-Jan-25 17:30 ATCO TE 7LA128 (572s Highland - 7L128 tap) SCADA updates- change internal RAS alarm logic in SCADA program 2.35 Days
Continuous		  
22-Jan-25 09:00 23-Jan-25 16:00 ATCO TE 820s Protection & Control (820s Hangingstone) PRC005 Relay Testing on 7L36 A&B 31 Hours
Continuous		  
22-Jan-25 09:00 22-Jan-25 17:30 ATCO IO 2075s Protection & Control (2075s Newell) reboot T11 ITMs to clear DC station minor alarms 8.5 Hours
Continuous		  
22-Jan-25 12:00 22-Jan-25 17:00 EPCOR Outage 987s CC24 (987s Clover Bar) relay maintenance 5 Hours
Continuous		  
23-Jan-25 07:00 24-Jan-25 17:00 EPCOR Outage 72RV4 (EP 511s Victoria - Rossdale), RV726 (Rossdale) breaker and relay maintenance 1.42 Days
Continuous		  
23-Jan-25 08:00 23-Jan-25 14:00 Lethbridge TE 593s Protection & Control (593s Lakeview) cutover SCADA points 6 Hours
Continuous		  
23-Jan-25 09:00 24-Jan-25 16:00 ATCO TE 905s Protection & Control (905s Meikle) PRC 21A/7L131, 21B/7L131 relay testing
 31 Hours
Continuous		  
23-Jan-25 09:00 23-Jan-25 16:00 SUNCOR TE 635EDD-1000 RTU/SCADA (635EDD-1000), 635EDD-1001 RTU/SCADA (635EDD-1001), 635EDD-1002 RTU/SCADA (635EDD-1002), 635EDD-1003 RTU/SCADA (635EDD-1003) update firewall rules and switch settings 7 Hours
Continuous		  
23-Jan-25 10:00 24-Jan-25 16:00 ATCO TE 931s Protection & Control (931s Bohn), 931s RTU/SCADA (931s Bohn) update 701T transformer protection relay wiring non electrical circuits 30 Hours
Continuous		  
24-Jan-25 07:00 24-Jan-25 17:00 EPCOR Outage 987s GB1B (987s Clover Bar) relay maintenance 10 Hours
Continuous		  
24-Jan-25 07:00 24-Jan-25 17:30 ALTALINK RB 729L (40s Wetaskiwin - 729AL tap), 729L (542s Ervick - 729AL tap), 729L (285s East Camrose - 542s Ervick) install new tap on 729L Structure 143 10.5 Hours
Daily		  
24-Jan-25 08:00 24-Jan-25 18:00 ATCO TE 813s Protection & Control (813s Little Smoky) 21A_50BF/7L90 and 21B_50BF/7L90 protections at 813s to be isolated one a time to remove temporary settings for 741s mobile sub 10 Hours
Continuous		  
24-Jan-25 08:00 25-Jan-25 17:00 ATCO TE 809s Protection & Control (809s Louise Creek) 21B/7L43, 21B/9L05, firmware upgrade firmware upgrade for CIP compliance 1.38 Days
Continuous		  
24-Jan-25 09:00 24-Jan-25 16:00 ATCO, ALTALINK Outage 7L50 (757s Battle River - 491L tap), 757s 709 (757s Battle River), 701L (223s Strome - 395s North Holden) 7L50 pole replacement structure 214 7 Hours
Continuous		  
24-Jan-25 09:00 24-Jan-25 15:00 BCH Outage T1 (BCH Natal), 13CX1 (BCH Natal) add oil to the conservater BC maintenance does not affect the Alberta ATC 6 Hours
Continuous		 AB-BC
24-Jan-25 12:01 29-Jan-25 17:00 ATCO Outage 7L56 (725s Goose River - 738s Virginia Hills) replacing cross arms and poles at various structures 5.21 Days
Continuous		  
24-Jan-25 12:01 03-Feb-25 12:00 ATCO Outage 741s 701T (741s Fox Creek), 741s 702T (741s Fox Creek), 741s 703 (741s ATC Fox Creek), 741s 704 (741s ATC Fox Creek) 25kV BUS outage to perform switch replacement 10 Days
Continuous		  

Prepared On:   2025-01-15   16:33:44

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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