Alberta Electric System Operator
System Co-ordination Plan
2024-07-11 to 2024-07-19
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 31-Dec-24 16:00 EPCOR IO C2 (Rossdale) forced outage 2,279.38 Days
Continuous		  
24-Oct-18 01:13 31-Dec-24 16:00 EPCOR IO C1 (Rossdale) forced outage 2,260.66 Days
Continuous		  
04-Sep-22 16:50 30-Sep-24 18:00 ATCO Outage 848s 401R (848s Ruth Lake) forced outage 757.05 Days
Continuous		  
31-Jul-23 14:56 27-Sep-24 16:00 ENMAX Outage 38B138-38.1CAP (SS-38), 38.1C (SS-38) motor run time fail 424.04 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		  
07-Mar-24 06:30 29-Aug-24 16:00 ALTALINK Outage 477s T1 (477s Amoco West Pembina) disconnect T1 and VR1 permanently, draining oil, release 477s T1, VR1, & 4.16kV equipment for salvage and RSLD2 then RSLD3 to be implemented at end of outage 175.35 Days
Continuous		  
02-Apr-24 07:00 19-Jul-24 17:00 EPCOR Outage T1 (Garneau), GT1 (Garneau) Garneau S/S Tx1 bay outage 108.42 Days
Continuous		  
23-Apr-24 08:00 27-Sep-24 16:00 ENMAX Outage 41.2TR (SS-41) forced outage - differential protection trip 157.33 Days
Continuous		  
29-Apr-24 07:00 02-Aug-24 17:00 EPCOR TE 557s Protection & Control (557s Castle Downs) protection blocking for annual relay maintenance 95.42 Days
Continuous		  
06-May-24 07:00 08-Nov-24 17:00 EPCOR Outage EP 511s Victoria T1 (EP 511s Victoria) Victoria: TX1 LCR, civil, demo, and construction 186.46 Days
Continuous		  
07-May-24 07:00 30-Sep-24 17:00 EPCOR TE 330p Protection & Control (330p Genesee) 138/500kV protection blocking for Repower Project Cut-Overs 146.42 Days
Continuous		  
12-May-24 12:00 17-Jul-24 17:30 ATCO TE 788s RTU/SCADA (788s Hotchkiss) 500SST1(AC/DC/SCADA), 701TCS, and 701T 66.23 Days
Continuous		  
03-Jun-24 07:00 30-Aug-24 17:00 EPCOR Outage T1 (Namao), EP 511s Victoria T1 (EP 511s Victoria), EP 511s V721 (EP 511s Victoria), EP 511s V722 (EP 511s Victoria) Victoria: TX1 LCR. Civil, Demo, and Construction 88.42 Days
Continuous		  
03-Jun-24 08:00 02-Aug-24 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) updating RTU configuration for the addition of a new RTU 60.38 Days
Daily		  
08-Jun-24 00:00 12-Jul-24 22:00 ALTALINK Outage 275s 1752 (275s Jenner) forced outage 34.92 Days
Continuous		  
10-Jun-24 08:00 30-Sep-24 18:00 ATCO, CNRL Outage 859s 501TD (859s Primrose) replace 25kV Switchgear to new GIS 112.42 Days
Continuous		  
11-Jun-24 07:00 03-Aug-24 17:00 ATCO TE 788s Protection & Control (788s Hotchkiss) block 144kV bus differential relay during 701T GOI 53.42 Days
Continuous		  
12-Jun-24 08:00 13-Aug-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) Fortis is replacing the power feed to Nakiska ski hill gold chair, which in turn feeds our 9115R radio site 62.38 Days
Continuous		  
17-Jun-24 08:00 11-Jul-24 17:00 ALTALINK TE 281s RTU/SCADA (281s Johnson), AltaLink Telecom Equipment DWDM hardware upgrades- 2024 CR&U at 281s 24.38 Days
Daily		  
17-Jun-24 08:00 11-Jul-24 16:00 ALTALINK TE AltaLink Telecom Equipment, AltaLink RTU/SCADA (AltaLink) DWDM hardware upgrades- 2024 CR&U at 9010R 24.33 Days
Daily		  
17-Jun-24 10:00 12-Jul-24 17:30 ATCO Outage 7L159 (770s Three Hills - 7L159 tap), 770s 703T (770s Three Hills), 770s 703 (770s Three Hills), 770s 704 (770s Three Hills) apparatus leak repairs 25.31 Days
Continuous		  
20-Jun-24 08:00 07-Oct-24 16:00 Syncrude Outage 1315 (Syncrude Mildred Lake), 1314 (Syncrude Mildred Lake) allow power distribution time to replace the 72 kV cables from plant 31 to C05 substation 109.33 Days
Continuous		  
21-Jun-24 10:00 17-Jul-24 17:00 ATCO Outage 788s 701T (788s Hotchkiss) remove 701TCS, add new 707 breaker and switch 707A, add new 701T, install jumper J1 to isolate low bus from high bus 26.29 Days
Continuous		  
24-Jun-24 07:00 12-Jul-24 17:00 ALTALINK, EPCOR Outage 1044L (EP 805s Jasper - 816s Petrolia), 816s P2405 (816s Petrolia), 816s P2406 (816s Petrolia), 816s PDS14 (816s Petrolia) Petrolia: 1044L zone doble and PDS10, PDS14, PDS15 disconnect maintenance 18.42 Days
Continuous		  
28-Jun-24 17:00 26-Jul-24 17:00 EPCOR Outage 816s P2406 (816s Petrolia) breaker LCR 28 Days
Continuous		  
29-Jun-24 07:00 11-Jul-24 10:00 EPCOR Outage 987s CGB3 (987s Clover Bar), 987s GT3 (987s Clover Bar) maintenance 12.13 Days
Continuous		  
01-Jul-24 08:00 11-Jul-24 17:30 ALTALINK TE 28s RTU/SCADA (28s West Brooks) update RTU for AIS1147 modification 10.4 Days
Daily		  
02-Jul-24 09:00 11-Jul-24 13:00 ALTALINK TE 287s RTU/SCADA (287s Hazelwood) commission new 1156AIS relay 9.17 Days
Continuous		  
02-Jul-24 09:00 11-Jul-24 13:00 ALTALINK TE 214s RTU/SCADA (214s Innisfail) commission new 1156AIS relay 9.17 Days
Continuous		  
02-Jul-24 09:00 11-Jul-24 13:00 ALTALINK TE 281s RTU/SCADA (281s Johnson) commission new 1156AIS relay 9.17 Days
Continuous		  
02-Jul-24 09:00 11-Jul-24 13:00 ALTALINK TE 55s RTU/SCADA (55s Olds) add scada I/O, 2037S protection upgrade, T2 B protection 9.17 Days
Continuous		  
02-Jul-24 09:00 11-Jul-24 16:00 SUNCOR TE SUNCOR ICCP Outage, 29EDD-1 RTU/SCADA (29EDD-1 Millennium), 29EDD-34 RTU/SCADA (29EDD-34), 29EDD-94 RTU/SCADA (29EDD-94 Voyageur) vulnerability assessment scan of all subnets in T&D PCN/DMZ networks 9.29 Days
Continuous		  
02-Jul-24 10:00 26-Jul-24 15:00 ATCO TE 774s Protection & Control (774s Monitor) update RAS-A/774 and RAS-B/774 adding RAS enable/disable control for all connected customers, new connection to 1004s and updated logic to 601S 24.21 Days
Continuous		  
02-Jul-24 14:00 11-Jul-24 17:30 ALTALINK Outage 214s T2 (214s Innisfail) oil reclaim 9.15 Days
Continuous		  
03-Jul-24 08:00 11-Jul-24 16:00 REDDEER Outage 217s T1 (217s North Red Deer) transformer testing 8.33 Days
Continuous		  
06-Jul-24 07:00 11-Jul-24 17:00 ALTALINK TE 55s Protection & Control (55s Olds) relay work 5.42 Days
Continuous		  
08-Jul-24 07:00 11-Jul-24 17:00 EPCOR Outage EP 805s J2405 (EP 805s Jasper) J2405 CT doble 3.42 Days
Continuous		  
08-Jul-24 07:00 31-Jul-24 17:00 ALTALINK, EPCOR Outage 1058L (657s Summerside - EP 803s Lambton), EP 803s L2404 (EP 803s Lambton), EP 803s L2403 (EP 803s Lambton) steel structure refurbishment 23.42 Days
Continuous		  
08-Jul-24 07:00 31-Jul-24 17:00 ALTALINK, EPCOR RB 1059L (EP 803s Lambton - 1059AL tap) steel structure refurbishment 23.42 Days
Continuous		  
08-Jul-24 07:00 31-Jul-24 17:00 ALTALINK, EPCOR RB 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap) steel structure refurbishment 23.42 Days
Continuous		  
08-Jul-24 07:00 19-Jul-24 17:00 EPCOR Outage 72LH8 (EP 803s Lambton - EP Hardisty), 72LS24 (EP 803s Lambton - Strathcona), EP 803s T3 (EP 803s Lambton), S724 (Strathcona), H726 (EP Hardisty), EP 803s L721 (EP 803s Lambton) Lambton- maintenance 11.42 Days
Continuous		  
08-Jul-24 07:30 11-Jul-24 18:00 ALTALINK Outage 784L (535s Joffre - 784AL tap), 535s 6352 (535s Joffre), 535s 6452 (535s Joffre) migrate and commission protections and associated controls 3.44 Days
Continuous		  
08-Jul-24 08:00 13-Jul-24 16:00 ENMAX Outage 15.1TR (SS-15) 15.1TR secondary cable replacement 5.33 Days
Continuous		  
08-Jul-24 08:00 12-Jul-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and migrating and commissioning of 784L protections, 6452, alarms controls and status 4.38 Days
Continuous		  
08-Jul-24 08:00 12-Jul-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) update and test configuration for DDR installation & 233s47 PT addition 4.38 Days
Daily		  
08-Jul-24 08:00 12-Jul-24 17:00 ALTALINK TE 233s Protection & Control (233s Beamer) protection outage on existing 96/352, new 11-96-79/352, A87/138B1, & B87/138B1 to move BF initiates & trips to new 11- 96-79/352, add DDR circuits 4.38 Days
Daily		  
08-Jul-24 08:00 11-Jul-24 17:30 ALTALINK TE 370s RTU/SCADA (370s North Lethbridge) update RTU 3.4 Days
Daily		  
08-Jul-24 08:00 11-Jul-24 16:00 ALTALINK TE 535s Protection & Control (535s Joffre) perform recloser testing 3.33 Days
Continuous		  
08-Jul-24 08:00 11-Jul-24 16:00 ALTALINK TE 28s Protection & Control (28s West Brooks) update and test line protection settings for 853L 3.33 Days
Daily		  
08-Jul-24 08:00 11-Jul-24 16:00 ALTALINK TE 504s Protection & Control (504s Queenstown) update and test line protection settings for 853L 3.33 Days
Daily		  
08-Jul-24 08:00 11-Jul-24 16:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink), AltaLink Telecom Equipment DWDM hardware upgrades- 2024 CR&U at 17s 3.33 Days
Daily		  
08-Jul-24 08:00 18-Jul-24 18:00 ALTALINK TE 254s RTU/SCADA (254s Coaldale) updating RTU for new RAS 219 addition 10.42 Days
Daily		  
08-Jul-24 08:00 11-Jul-24 16:00 ATCO RB 7L56 (725s Goose River - 813s Little Smoky) walk up and climbing inspection 3.33 Days
Continuous		  
08-Jul-24 08:00 19-Jul-24 18:00 SUNCOR TE 29EDD-60 Inglis Island, 29EDD-61 Stony Island CBR HV relay & SCADA commissioning 11.42 Days
Continuous		  
08-Jul-24 08:00 11-Jul-24 16:00 ENMAX Outage 47.2TR (SS-47) transformer maintenance 3.33 Days
Continuous		  
08-Jul-24 08:00 11-Jul-24 17:00 ALTALINK TE 172s RTU/SCADA (172s Sherritt Gordon), AltaLink Telecom Equipment update SCADA RTU configuration for change from MPLS analog to MPLS digital 3.38 Days
Daily		  
08-Jul-24 08:30 11-Jul-24 17:30 ATCO Outage 721s 702T (721s La Corey), 721s 702 (721s La Corey) transformer major testing - PM
 3.38 Days
Continuous		  
08-Jul-24 09:00 12-Jul-24 17:00 BCH Outage 2L294 (BCH A. A. Lambert - BCH Cranbrook) replace end of life structure. BC maintenance does not affect the Alberta ATC 4.33 Days
Continuous		 AB-BC
08-Jul-24 09:00 11-Jul-24 16:00 ATCO Outage 809s 902T (809s Louise Creek), 809s 910 (809s Louise Creek), 809s 911 (809s Louise Creek), 809s 702 (809s Louise Creek), 809S 902TD (809s Louise Creek) transformer maintenance 3.29 Days
Continuous		  
08-Jul-24 09:30 12-Jul-24 17:30 ATCO Outage 834s 902T (834s Wesley Creek), 834s 902 (834s Wesley Creek), 834s 903 (834s Wesley Creek), 834s 503 (834s Wesley Creek) test switch mitigation and replacement: 4.33 Days
Continuous		  
08-Jul-24 11:00 01-Aug-24 17:00 ALTALINK TE 191s Protection & Control (191s N.W. Cardiff) implement new settings and trip tests 24.25 Days
Daily		  
08-Jul-24 13:00 01-Aug-24 17:30 ALTALINK Outage 191s T1 (191s N.W. Cardiff) 25 kV breaker/protection replacements, T1 25 kV bushing replacements 24.19 Days
Continuous		  
09-Jul-24 07:00 11-Jul-24 18:30 ALTALINK Outage 708L (233s Beamer - 708AL tap), 233s 708X (233s Beamer) replace VSR with new PT, install DDR circuits, trip testing and verify recloser 2.48 Days
Continuous		  
09-Jul-24 08:00 10-Aug-24 16:00 ENMAX Outage 31.1C (SS-31) HV breaker maintenance 32.33 Days
Continuous		  
09-Jul-24 08:00 13-Jul-24 17:00 ATCO TE 788s Protection & Control (788s Hotchkiss) 701TCS replaced with new breaker 707 4.38 Days
Continuous		  
09-Jul-24 13:00 12-Jul-24 18:00 ATCO Outage 771s 701T (771s Veteran) forced outage 3.21 Days
Continuous		  
10-Jul-24 07:30 11-Jul-24 18:00 ALTALINK Outage 993s T1 (993s Abee) T1 doble, maintenance and leak repair, replace SS1 cabling and junction box 1.44 Days
Continuous		  
10-Jul-24 08:00 12-Jul-24 16:00 ALTALINK, BCH Outage 786L (799s Coleman - BCH Natal), 1CB2 (BCH Natal) need to move this fiber run to accommodate construction for a wildlife underpass 2.33 Days
Continuous		 AB-BC
10-Jul-24 08:00 12-Jul-24 15:00 ALTALINK TE AltaLink Telecom Equipment, 799s RTU/SCADA (799s Coleman), APS# 40 Coleman 799s - 786L Overload Mitigation Scheme move this fiber run to accommodate construction for a wildlife underpass 2.29 Days
Continuous		  
10-Jul-24 08:00 16-Jul-24 12:00 ATCO Outage 6L11 (743s Sarah Lake - 854s Swan Dive), 743s 603 (743s Sarah Lake) 6L11 pole replacement 6.17 Days
Continuous		  
10-Jul-24 08:00 11-Jul-24 17:00 ALTALINK TE 199s Protection & Control (199s East Airdrie) standard relay maintenance 1.38 Days
Daily		  
10-Jul-24 08:00 18-Jul-24 16:00 ENMAX Outage 22.2TR (SS-22) transformer maintenance 8.33 Days
Continuous		  
10-Jul-24 09:00 11-Jul-24 17:00 ATCO Outage 849s 903 (849s Joslyn Creek) breaker maintenance 1.33 Days
Continuous		  
10-Jul-24 09:30 11-Jul-24 17:30 ATCO Outage 845s 701 (845s Big Mountain) breaker testing 1.33 Days
Continuous		  
10-Jul-24 10:00 11-Jul-24 17:00 ALTALINK TE 55s Protection & Control (55s Olds) protection to remain out of service for 25 kV breaker trip tests 31 Hours
Continuous		  
10-Jul-24 16:31 11-Jul-24 16:00 ATCO, ALTALINK Outage 7L749 (899s Edgerton - 7LB749 tap), 899s 749N (899s Edgerton) climbing inspection 23.48 Hours
Continuous		  
10-Jul-24 16:31 11-Jul-24 16:00 ALTALINK IO 749L (899s Edgerton - 7LB749 tap) climbing inspection 23.48 Hours
Continuous		  
11-Jul-24 07:00 15-Jul-24 18:00 SUNCOR Outage 635EDD-1001 144kV Bus 635PP-1006 (635EDD-1001), 635EDD-1001 635-752-621 (635EDD-1001), 635EDD-1001 635-752-611 (635EDD-1001), 635EDD-1001 635-752-631 (635EDD-1001), 635EDD-1001 635-752-642 (635EDD-1001), 635EDD-1001 635-752-651 (635EDD-1001), 635EDD-1001 635-752-661 (635EDD-1001) maintenance 4.46 Days
Continuous		  
11-Jul-24 08:00 11-Jul-24 16:00 ENMAX Outage 47B138-771/1 (SS-47) HV breaker maintenance, SF6 gas sample 8 Hours
Continuous		  
11-Jul-24 12:00 12-Jul-24 12:00 ALTALINK TE AltaLink Telecom Equipment Shaw/Rogers is cutting their fiber between. All traffic will be re-routed in 50ms prior to the outage and will be re- routed back at the end of the outage.Scheduled By: Mohamed Maremi Requested by: Glenn Perry Contact #: 403.863.2689 Issue to: NetComm engineer contact #: 24 Hours
Continuous		  
12-Jul-24 07:30 12-Jul-24 15:30 ALTALINK Outage 55s T1 (55s Olds) repair grounding for PT1 due to copper theft 8 Hours
Daily		  
12-Jul-24 08:00 12-Jul-24 16:00 ENMAX Outage 47B138-771 (SS-47) HV breaker maintenance 8 Hours
Continuous		  
12-Jul-24 08:00 12-Jul-24 17:00 SUNCOR TE 29EDD-2 RTU/SCADA (29EDD-2 Tar Island) BP- updates to 29EDD-2 for 29PT-003 protection upgrades 9 Hours
Continuous		  
15-Jul-24 07:00 19-Jul-24 17:00 EPCOR Outage 805s T1 (805s Jasper), EP 805s J2401 (EP 805s Jasper) Jasper: JDS2 LCR 4.42 Days
Continuous		  
15-Jul-24 07:00 18-Jul-24 18:00 ALTALINK Outage 472L (213s Hughenden - 472AL tap), 213s 472 (213s Hughenden) component replacement 3.46 Days
Continuous		  
15-Jul-24 07:00 18-Jul-24 18:00 ALTALINK Outage 770L (254s Coaldale - 370s North Lethbridge) Updating and testing new line protection settings and RAS Relays for the new RAS 219. Adding a 43M to 254s770 (552). 3.46 Days
Continuous		  
15-Jul-24 07:00 20-Jul-24 18:00 ALTALINK TE 434s RTU/SCADA (434s Stony Plain) update RTU configuration. 5.46 Days
Daily		  
15-Jul-24 07:30 17-Jul-24 18:00 ALTALINK Outage 535s 1152 (535s Joffre) migrate and commission all 535s1152 2.44 Days
Continuous		  
15-Jul-24 07:30 17-Jul-24 17:00 ATCO TE 710s Protection & Control (710s Vermilion), 710s RTU/SCADA (710s Vermilion) ITM settings and non electrical function Update.
Will be changing settings on:
702T 87TA
702T 87TB
702T Non-elec
702T ITM
One protection will be isolated at a time during settings update/testing.
Will need to push updated SMP config to RTU loss visibility of site for 30 min during uploads		 2.4 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 395s Protection & Control (395s North Holden) settings change on RAS 134 relays for 1004s Bullseye project. 3.38 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 163s RTU/SCADA (163s Amoco Empress) update configuration and testing for RAS134 modification 3.38 Days
Daily		  
15-Jul-24 08:00 29-Jul-24 18:00 SUNCOR TE 29EDD-1 RTU/SCADA (29EDD-1 Millennium), 29EDD-1 Millennium, 29EDD-94 RTU/SCADA (29EDD-94 Voyageur) BP-Suncor CBR Project IMS Stage 2 SCADA integration and commissioning. Multiple 15 mins SCADA outage would be applied for programming uploading and downloading. Multiple false alarm will be created for testing. 14.42 Days
Continuous		  
15-Jul-24 08:00 09-Aug-24 16:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 2.83L (SS-2 - 2.83L tap), 2.83L (SS-13 - 2.83L tap) 2.83L T-tap 5 Sub leg to be decommissioned and moved to Str 1 near 2 Sub. T-tap removed from Str 70 (zoo), re-established at Str 1. T-tap to 5 Sub will follow Str 1 to Str 24 via new UG segment connected during this outage. 24hr soak test on June 8 25.33 Days
Continuous		  
15-Jul-24 08:00 19-Jul-24 15:00 ALTALINK Outage 102s SVC (102s Langdon), 102s 252 (102s Langdon), 102s 552 (102s Langdon), 102s 7189 (102s Langdon) maintenance/ inspection of SVC components 4.29 Days
Continuous		  
15-Jul-24 08:00 20-Jul-24 16:00 ENMAX Outage 15.2TR (SS-15) 15.2TR Secondary Cable Replacement 5.33 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) Supervisory visibility outage required to download new configurations and migrating and commissioning of s1152 Protections, alarms controls and status. Short loss of visibility (2-15 Minutes) about 4 times each day. 3.38 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 16:00 ATCO RB 7L09 (823s Wapiti - 7L03 tap) Changing Rotten Cross Arm under live line technique 3.33 Days
Continuous		  
15-Jul-24 08:00 19-Jul-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) update and test config for DDR installation. 4.38 Days
Daily		  
15-Jul-24 08:00 16-Jul-24 16:00 ENMAX Outage 15.60L (SS-15 - SS-21), 15B69-15.60 (SS-15) breaker maintenance 1.33 Days
Continuous		  
15-Jul-24 08:00 15-Jul-24 17:00 SUNCOR TE 29EDD-3 29PT-5 (29EDD-3) BP-29PT-5 Change relay settings for PRC-025 - 300328751 9 Hours
Continuous		  
15-Jul-24 08:00 15-Jul-24 17:00 SUNCOR TE 29EDD-3 29PT-6 (29EDD-3) BP-29PT-6 Change relay settings for PRC-025 - 300328752 9 Hours
Continuous		  
15-Jul-24 08:00 17-Jul-24 16:00 ATCO RB 7L13 (845s Big Mountain - 7LA13 tap), 7L13 ( ATC 808s Procter & Gamble - 7LB13 tap), 7LA13 (752s Albright and Wilson - 7L13 tap) Line Mitigation Pole Changes 2.33 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 254s Protection & Control (254s Coaldale) removing the A & B protection one at a time for RAS updates. 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 370s Protection & Control (370s North Lethbridge) removing the A & B protection one at a time for RAS updates. 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) removing A & B Protections one at a time to re-commission RAS circuits to 370s. 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 255s Protection & Control (255s Vulcan) removing A & B protections one at a time to re-commission RAS circuits to 370s. 255s 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 370s Protection & Control (370s North Lethbridge) Removing A & B Protections one at a time to replace existing RAS Relays with new RAS 178, 217 & 219. Redundant protection to remain in service at all times for RAS 178 & 217. No redundant protection for AIS 1139. 3.38 Days
Daily		  
15-Jul-24 08:00 01-Aug-24 18:00 ALTALINK TE 370s RTU/SCADA (370s North Lethbridge) updating RTU for new RAS 219 addition. 17.42 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 16:00 ATCO RB 7L56 (725s Goose River - 813s Little Smoky) Walk Up and Climbing Inspection 3.33 Days
Continuous		  
15-Jul-24 08:00 16-Jul-24 16:00 ENMAX Outage 5.1TR (SS-5) tap changer inspection, tap changer oil filtration maintenance, temp diff alarm follow up, oil sampling, check reversing switch. 1.33 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 16:00 ENMAX Outage 14.1TR (SS-14) transformer power factor test. secondary cable test. transformer maintenance. relay fault pressure test. check reversing switch. oil sampling 3.33 Days
Continuous		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 324s RTU/SCADA (324s Cassils) rugged com mitigation. 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 132s RTU/SCADA (132s Ware Junction) rugged com mitigation. 3.38 Days
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 275s RTU/SCADA (275s Jenner) Rugged Com mitigation for the following devices:LAN-PS3 RS416,LAN-PS4 RS416,LAN-PS5 RS416,LAN-ES1 RSG2100 LAN-ES2 RSG2100,LAN-ES3 RSG2100 RTU supervisory/visibility out several times each for 15 minutes at a time. 3.38 Days
Daily		  
15-Jul-24 08:00 15-Jul-24 17:00 ALTALINK TE 320p Protection & Control (320P Keephills) settings change, 9 Hours
Daily		  
15-Jul-24 08:00 18-Jul-24 17:00 ALTALINK TE 320p RTU/SCADA (320P Keephills) RTU database update 3.38 Days
Daily		  
15-Jul-24 08:00 17-Jul-24 17:00 ALTALINK TE 535s Protection & Control (535s Joffre) relay maintenance 2.38 Days
Daily		  
15-Jul-24 08:00 19-Jul-24 17:00 ALTALINK, BPWF TE 611s RTU/SCADA (611s Amber) download new configurations and deficiency cleanup 4.38 Days
Daily		  
15-Jul-24 08:00 26-Jul-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) protection outage. Redundant protection to remain in service at all times. 11.38 Days
Daily		  
15-Jul-24 08:00 26-Jul-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) protection outages for circuit addition and testing. 11.38 Days
Daily		  
15-Jul-24 08:00 26-Jul-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) A & B protections to for circuit addition and testing. 11.38 Days
Daily		  
15-Jul-24 08:30 25-Jul-24 17:30 ALTALINK, BHE RB 879L (368s Burdett - 879L tap), 879L (244s Bowmanton - 879AL tap), 879AL (719s Rattlesnake Ridge - 879L tap) Component Replacement Prep STR 460-730 LIVE LINE 10.38 Days
Daily		  
15-Jul-24 08:30 15-Jul-24 16:00 ATCO Outage 2029s ACF11 (2029s Heathfield), 2029s 1218 (2029s Heathfield) filter bank maintenance 7.5 Hours
Continuous		  
15-Jul-24 08:30 01-Aug-24 17:30 ATCO TE 710s RTU/SCADA (710s Vermilion) configuration changes 17.38 Days
Continuous		  
15-Jul-24 09:00 16-Jul-24 17:00 ATCO Outage 849s 906 (849s Joslyn Creek) breaker maintenance 1.33 Days
Continuous		  
15-Jul-24 09:00 16-Jul-24 16:00 ATCO Outage 7L30 (732s Mitsue - 844s AEC Mill), 844s 703 (844s AEC Mill) breaker maintenance and prc-005 trip coil testing 31 Hours
Continuous		  
15-Jul-24 09:00 15-Jul-24 17:30 ALTALINK Outage 233s 735N (233s Beamer), 735L (171s Redwater - 233s Beamer) remove CT circuit from 96/352. 8.5 Hours
Daily		  
15-Jul-24 09:00 22-Jul-24 17:00 ATCO TE 755s Protection & Control (755s Cordel), 972s Protection & Control (972s Tinchebray), 620s Protection and Control (620s Goldeye) 9LA16 Protection Testing between new site 620S Goldeye, 972S Tinchebray and 755S Cordel
Block A protection, complete end to end testing with 972s and 755s, put A protection in service.
Block B protection, complete end to end testing with 972s and 755s, put B protection in service.		 7.33 Days
Continuous		  
15-Jul-24 09:00 16-Jul-24 09:00 ALTALINK Outage 616L (103s Goose Lake - 616AL tap), 616L (59s Peigan - 616AL tap) 4 yr maintenance & testing on substation isolation switch 89-S1 24 Hours
Continuous		  
15-Jul-24 09:00 18-Jul-24 17:00 BCH Outage 5L92 (BCH Cranbrook - BCH Selkirk) 5L92 replace insulators & spacers 3.33 Days
Continuous		 AB-BC
15-Jul-24 09:00 15-Jul-24 16:00 Saskpower Outage Sask Power AS902 maintenance 7 Hours
Continuous		 AB-SK
15-Jul-24 09:30 16-Jul-24 17:30 ATCO Outage 845s 702 (845s Big Mountain) 845S BIG MOUNTAIN BREAKER 702 SF6 HPL COMPLETE TESTING
845S BIG MOUNTAIN BREAKER 702 SF6 HPL PARTIAL TESTING		 1.33 Days
Continuous		  
15-Jul-24 09:30 17-Jul-24 07:30 ALTALINK Outage 15s T1 (15s Fort Macleod) protection upgrades 1.92 Days
Continuous		  
15-Jul-24 10:00 22-Jul-24 14:00 ALTALINK Outage 138s T1 (138s Windy Flats), 497L (138s Windy Flats - 1063s Windrise), 138s 138kV Bus 1 (138s Windy Flats) Transformer internal inspection and repair from Siemens 138s T1 Tx18979 7.17 Days
Continuous		  
15-Jul-24 10:00 18-Jul-24 16:05 ATCO TE 917s Protection & Control (917s Horse River) protection settings updates on 3x 25kV feeder relays, 500BS1 relay, 701T protection for customer load increase. 3.25 Days
Continuous		  
15-Jul-24 11:00 18-Jul-24 15:00 ATCO Outage 7L85 (801s Anderson - ATC 803s Bullpound) Cross arm and insulator replacement on 7L85 3.17 Days
Continuous		  
15-Jul-24 11:00 19-Jul-24 17:00 ALTALINK TE 191s RTU/SCADA (191s N.W. Cardiff) RTU database update 4.25 Days
Daily		  
15-Jul-24 11:00 18-Jul-24 18:00 ALTALINK TE 678s RTU/SCADA (678s Okotoks) RTU outage to facilitate CT ratio change and replace revenue meter. 3.29 Days
Daily		  
15-Jul-24 11:00 17-Jul-24 17:00 ATCO TE 860s Protection & Control (860s Crow) perform relay PM's on 701T, 5L018, 3L214 overcurrent protection. 2.25 Days
Continuous		  
15-Jul-24 11:30 19-Jul-24 17:00 ALTALINK Outage 42s T2 (42s Sarcee), 42s 60 (42s Sarcee) maintenance and leak repair 4.23 Days
Continuous		  
15-Jul-24 11:30 15-Jul-24 17:30 ALTALINK Outage 17s 11 (17s Benalto) 240kV breaker maintenance 6 Hours
Daily		  
15-Jul-24 12:30 15-Jul-24 17:30 ALTALINK Outage 87s 552 (87s Gaetz) breaker maintenance 5 Hours
Daily		  
15-Jul-24 13:30 18-Jul-24 17:30 ALTALINK Outage 171s T2 (171s Redwater) doble, sfra, maint, leaks 3.17 Days
Continuous		  
16-Jul-24 06:00 16-Jul-24 20:00 ALTALINK Outage 1148L (251s Whitla - 1018s Shamrock) Annual Substation Maintenance Outage 14 Hours
Continuous		  
16-Jul-24 07:00 16-Jul-24 17:30 ALTALINK Outage 305s 446 (305s Acheson), 446L (305s Acheson - 367s Harry Smith) Replace grading capacitors on 305s446 breaker. 10.5 Hours
Daily		  
16-Jul-24 07:00 16-Jul-24 17:00 ALTALINK TE 77s RTU/SCADA (77s Sagitawah) replace failed RTU. 10 Hours
Continuous		  
16-Jul-24 07:00 18-Jul-24 17:00 ALTALINK TE 678s Protection & Control (678s Okotoks) Techs to complete CT ratio changes on breakers 104W, 81E, and 2181L techs will isolate CT on the follow protection: B25B1 87/25B1 URB30, B25B1 87/25B2 URB30 One a time no more than 6 hours at a time. 2.42 Days
Daily		  
16-Jul-24 07:30 16-Jul-24 17:30 ALTALINK Outage 233s 807X (233s Beamer), 807L (233s Beamer - 807AL tap) Add 233s807X currents and initiates to DDR 10 Hours
Daily		  
16-Jul-24 07:30 17-Jul-24 18:00 ALTALINK Outage 223s T1 (223s Strome) T1 Doble, maintenance and leak repair. 223s43 breaker maintenance. 1.44 Days
Continuous		  
16-Jul-24 08:00 29-Jul-24 17:00 ALTALINK Outage 463L (15s Fort Macleod - 463AL tap) crossarm & insulator replacement 13.38 Days
Continuous		  
16-Jul-24 08:00 17-Jul-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 59s RTU/SCADA (59s Peigan) complete MPLS upgrade and LAN switch install. 1.38 Days
Daily		  
16-Jul-24 08:00 16-Jul-24 12:30 ALTALINK Outage 87s 852 (87s Gaetz) 138kV breaker maintenance 4.5 Hours
Daily		  
16-Jul-24 08:00 16-Jul-24 17:00 SUNCOR TE 29EDD-2 RTU/SCADA (29EDD-2 Tar Island) updates and protection upgrades 9 Hours
Continuous		  
16-Jul-24 08:00 17-Jul-24 16:00 ENMAX Outage 21.1TR (SS-21) prep work for transformer replacement
 1.33 Days
Continuous		  
16-Jul-24 08:00 16-Jul-24 16:00 SUNCOR TE 29PL6-22 (29EDD-1 Millennium - 29EDD-2 Tar Island) BP-Isolate protection and clean fibre - 300299462 (CG) 8 Hours
Continuous		  
16-Jul-24 08:30 18-Jul-24 17:30 ATCO Outage 700s 701 (700s Bonnyville), 7L70 (700s Bonnyville - 707s St. Paul) 701 Partial Breaker testing. 2.38 Days
Continuous		  
16-Jul-24 08:30 18-Jul-24 17:30 ALTALINK Outage 723s 252 (723s Christina Lake), 723s 240kV Bus 2 (723s Christina Lake), 723s T2 (723s Christina Lake), 723s 652 (723s Christina Lake) 240kV Breaker Maintenances, dashpot repair 2.38 Days
Daily		  
16-Jul-24 08:30 16-Jul-24 16:00 ATCO Outage 2029s ACF12 (2029s Heathfield) 11598264 - FILTER BANK AC MAINTENANCE @ HEATHFIELD 2029S ACF12 7.5 Hours
Continuous		  
16-Jul-24 09:00 17-Jul-24 17:00 ATCO TE 827s RTU/SCADA (827s Cranberry Lake) prepare for low Bes firewall install. 1.33 Days
Continuous		  
16-Jul-24 09:30 17-Jul-24 17:30 ATCO Outage 834s 901 (834s Wesley Creek) trip coil testing 1.33 Days
Continuous		  
16-Jul-24 10:00 17-Jul-24 16:00 ATCO Outage 827s SVC (827s Cranberry Lake), 827s 703T (827s Cranberry Lake), 827s 703 (827s Cranberry Lake) SVC Maintenance 30 Hours
Continuous		  
16-Jul-24 11:00 16-Jul-24 13:00 CNRL, ATCO Outage 859s 52G (859s Primrose), 859s 501TD (859s Primrose) transfer all load from 25kV bus B to 25kV bus A 2 Hours
Continuous		  
16-Jul-24 13:00 16-Jul-24 17:30 ALTALINK Outage 87s 252 (87s Gaetz) 138kv breaker maintenance 4.5 Hours
Daily		  
16-Jul-24 13:00 17-Jul-24 13:00 ALTALINK Outage 514L (396s Pincher Creek - 514BL tap), 514BL (322s Cowley Ridge Windplant - 514L tap), 514L (513s Lundbreck - 514BL tap), 513s T1 (513s Lundbreck) Urgent outage to replace arms and insulation (STR 90,94,95,103) 24 Hours
Continuous		  
17-Jul-24 07:30 19-Jul-24 14:00 ALTALINK Outage 15s 138kV Bus1 (15s Fort Macleod), 463L (15s Fort Macleod - 463AL tap), 180L (15s Fort Macleod - 180AL tap), 15s T1 (15s Fort Macleod) Install and commission new T1 protections, 15s22 control, VT1 distribution and trip testing 2.27 Days
Continuous		  
17-Jul-24 07:30 17-Jul-24 17:30 ALTALINK RB 973L (39s Bickerdike - 310p Sundance) retie the overhead (Str 313, 314) 10 Hours
Daily		  
17-Jul-24 07:30 17-Jul-24 17:30 ALTALINK RB 974L (39s Bickerdike - 310p Sundance) retie the overhead (Str 313, 314) 10 Hours
Daily		  
17-Jul-24 08:00 18-Jul-24 16:00 ENMAX Outage 15.62L (SS-15 - SS-16), 15B69-15.62 (SS-15), 16B69-15.62 (SS-16) HV Breaker Maintenance - 15B69-15.62 1.33 Days
Continuous		  
17-Jul-24 08:00 17-Jul-24 18:00 ALTALINK TE AltaLink Telecom Equipment, 928s RTU/SCADA (928s East Stavely) MPLS Upgrade at 9074R will be completed remotely by MPLS engineer. Supervisory circuit of 928S will be OOS for 30 mins. TPR RAS A77 MATL, both 'A' and 'B' will be down for less than 50ms during the rerouting.All other circuits will be re- routed in 50m 10 Hours
Daily		  
17-Jul-24 08:00 18-Jul-24 16:00 ENMAX Outage 5.5TR (SS-5) maintenance 1.33 Days
Continuous		  
17-Jul-24 08:00 17-Jul-24 17:00 ALTALINK TE 69s Protection & Control (69s North Barrhead) settings change 9 Hours
Daily		  
17-Jul-24 08:30 17-Jul-24 16:00 ATCO Outage 2029s ACF13 (2029s Heathfield) filter bank AC maintenance 7.5 Hours
Continuous		  
17-Jul-24 09:00 18-Jul-24 17:00 ATCO IO 849s 907 (849s Joslyn Creek) breaker maintenance 1.33 Days
Continuous		  
17-Jul-24 09:00 18-Jul-24 16:00 ATCO Outage 844s 704 (844s AEC Mill) breaker maintenance, prc-005 trip coil testing 31 Hours
Continuous		  
17-Jul-24 09:00 18-Jul-24 17:00 ATCO Outage 7L760 (767s Oyen - 7LA760 tap) Close open jumpers at 7LC760 structure #2 to energize new RESC Big Sky Solar 1004S Bullseye substation
BREAKER 702 SF6 HPL PARTIAL TESTING
Install ~600 m of bird flight diverters with drone on the shield wire of the two transmission lines (7L760 and 7LC760		 1.33 Days
Continuous		  
17-Jul-24 09:30 18-Jul-24 17:30 ATCO Outage 845s 708 (845s Big Mountain), 845s 709 (845s Big Mountain), 7L46 (813s Little Smoky - 845s Big Mountain) 845S BIG MOUNTAIN BREAKER 702 SF6 HPL COMPLETE TESTING
845S BIG MOUNTAIN BREAKER 702 SF6 HPL PARTIAL TESTING		 1.33 Days
Continuous		  
17-Jul-24 10:00 17-Jul-24 14:00 ALTALINK Outage 250p 11 (250p Bighorn Plant) maintenance 4 Hours
Daily		  
17-Jul-24 10:00 17-Jul-24 11:00 ALTALINK TE AltaLink Telecom Equipment, 523s RTU/SCADA (523s Bullshead) In the telecom building at 523S, rack 102 needs to be removed to make room for P&C equipment for the Enerfin project. 523s Supervisory will be OOS, 879L and 763L protections will be rerouted in 50ms. 60 Mins
Daily		  
18-Jul-24 06:30 18-Jul-24 17:30 ALTALINK Outage 61s T1 (61s Lodgepole) LA grounding upgrade 11 Hours
Daily		  
18-Jul-24 08:00 18-Jul-24 17:00 ALTALINK, TRANSALTA TE 258s RTU/SCADA (258s Dow Hydrocarbons), AltaLink Telecom Equipment, 218s RTU/SCADA (218s Fort Saskatchewan Co-Gen) 258s MPLS socket conversion 9 Hours
Daily		  
18-Jul-24 09:00 18-Jul-24 17:00 ATCO TE 716s Protection & Control (716s Lloydminster) settings update to relay at 716S Lloydminster.
 8 Hours
Continuous		  
18-Jul-24 09:30 19-Jul-24 17:30 ATCO Outage 834s 902 (834s Wesley Creek) PRC-005 - TRIP COIL TESTING
RTXP Test Switch Mitigation and Replacement: 50BF/902 @ 834S		 1.33 Days
Continuous		  
18-Jul-24 10:00 18-Jul-24 14:00 ALTALINK Outage 250p 22 (250p Bighorn Plant) maintenance 4 Hours
Daily		  
18-Jul-24 10:00 18-Jul-24 17:00 ATCO TE ATCO Telecom Equipment, 972s RTU/SCADA (972s Tinchebray) Low Bes firewall install 7 Hours
Continuous		  
19-Jul-24 06:30 19-Jul-24 17:30 ALTALINK Outage 61s T2 (61s Lodgepole) LA grounding upgrade 11 Hours
Daily		  
19-Jul-24 07:00 24-Jul-24 18:00 SUNCOR Outage 635EDD-1001 144kV Bus 635PP-1007 (635EDD-1001), 635EDD-1001 635-752-623 (635EDD-1001), 635EDD-1001 635-752-613 (635EDD-1001), 635EDD-1001 635-752-632 (635EDD-1001), 635EDD-1001 635-752-643 (635EDD-1001), 635EDD-1001 635-752-653 (635EDD-1001), 635EDD-1001 635-752-663 (635EDD-1001) maintenance 5.46 Days
Continuous		  
19-Jul-24 08:00 19-Jul-24 12:00 ENMAX Outage 24.82L (SS-24 - SS-65), 24B138-24.82 (SS-24) HV breaker SF6 gas sample 4 Hours
Continuous		  
19-Jul-24 08:00 19-Jul-24 17:00 ALTALINK TE 420s RTU/SCADA (420s Broadmoor) 420s MPLS raw socket conversion. 9 Hours
Daily		  
19-Jul-24 08:30 19-Jul-24 17:30 ALTALINK RB 162L (229s Glenwood - 415s Drywood), 225L (229s Glenwood - 385s Spring Coulee) installing temporary station bypass structures and wire 9 Hours
Daily		  
19-Jul-24 09:00 19-Jul-24 17:00 ATCO TE 728s RTU/SCADA (728s Mercer Hill) RTU configuration download 8 Hours
Continuous		  
19-Jul-24 10:00 19-Jul-24 17:00 ATCO TE ATCO Telecom Equipment, 7L84 (722s Crystal Lake - 749s Flyingshot Lake) Saskatoon Mtn and Poplar Hill telecom
MDR link replacement with IRU AVIAT microwave radio		 7 Hours
Continuous		  
19-Jul-24 12:00 19-Jul-24 16:00 ENMAX Outage 24B138-24BT3 (SS-24) HV breaker SF6 gas sample 4 Hours
Continuous		  
19-Jul-24 22:00 20-Jul-24 08:00 ENMAX Outage 2.82L (SS-2 - SS-5) scaffold hoarding install, install anchors and guys to support Str 23. 2.83L deadend on structure 23 and remove span from existing Structure 24 to Str 23 10 Hours
Continuous		  

Prepared On:   2024-07-10   15:13:57

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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