Alberta Electric System Operator
System Co-ordination Plan
2024-06-20 to 2024-06-28
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 30-Jun-24 17:00 EPCOR Outage T1 (Garneau), GT1 (Garneau) Garneau S/S Tx1 bay outage 89.42 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-Jun-24 17:00 EPCOR TE 330p Protection & Control (330p Genesee) 138/500kV protection blocking for Repower Project Cut-Overs 54.42 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		  
20-May-24 08:00 20-Jun-24 16:00 ENMAX Outage 5.10TR (SS-5) transformer protection upgrade 31.33 Days
Continuous		  
21-May-24 07:00 21-Jun-24 17:00 EPCOR Outage 816s P2403 (816s Petrolia) breaker LCR 31.42 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 27-Jun-24 17:30 ALTALINK TE 255s RTU/SCADA (255s Vulcan) Enterprise project - update RTU for AIS1147 modification 24.4 Days
Daily		  
03-Jun-24 08:00 26-Jul-24 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) updating RTU configuration for the addition of a new RTU 53.38 Days
Daily		  
10-Jun-24 07:00 29-Jun-24 17:00 EPCOR Outage 72NW15 (Namao - Woodcroft), N726 (Namao), W723 (Woodcroft) pole replacement and pole straightening 19.42 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		  
10-Jun-24 08:00 28-Jun-24 16:00 ENMAX TE Protection & Control (SS-8) SS8 autoswitching for Z67(Old) (8.1TR & 8.2TR) to be permanently disabled for demo 18.33 Days
Continuous		  
10-Jun-24 08:00 24-Jun-24 16:00 Syncrude Outage 25 (Aurora), UT2 (Aurora) need to isolate the 15kv bus for inspection repair 14.33 Days
Continuous		  
10-Jun-24 10:00 21-Jun-24 17:30 ATCO Outage 786s SVC (786s High Level), 786s 703T (786s High Level), 786s 703 (786s High Level) 703T leak repair check up
, 703T remediation, civil work, and containment installation		 11.31 Days
Continuous		  
11-Jun-24 07:00 17-Jul-24 17:00 ATCO TE 788s Protection & Control (788s Hotchkiss) block 144kV bus differential relay during 701T GOI 36.42 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 09:59 ATCO Outage 788s 701T (788s Hotchkiss), 788s 701TCS (788s Hotchkiss), 788s 702 (788s Hotchkiss) remove 701TCS, add NEW 707 breaker and switch 707A. Add new 701T 10.08 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE 788s Protection & Control (788s Hotchkiss) temporary settings update on 7L51 & 7L82 protection relays 10.4 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE ATC 793s Protection & Control (ATC 793s West Peace River) temporary settings update on 7L51 protection relays 10.4 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE 853s Protection & Control (853s Ring Creek), 853s RTU/SCADA (853s Ring Creek) temporary settings update on 7L82 protection relays 10.4 Days
Continuous		  
12-Jun-24 08:00 22-Jun-24 18:00 SUNCOR Outage 29EDD-18 29PT-100 (29EDD-18 Firebag), 29EDD-18 29-752-102 (29EDD-18 Firebag), 29EDD-18 29-752-103 (29EDD-18 Firebag), 29EDD-18 29PS-0055 (29EDD-18 Firebag), 29EDD-18 29PS-0056 (29EDD-18 Firebag) FB - 450092664 29EDD18;29PT-100 SYSTEM;PM 5y
 10.42 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		  
12-Jun-24 16:01 28-Jun-24 18:00 ATCO RB 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap) helicopter work in proximity to 1L359 16.08 Days
Continuous		  
13-Jun-24 07:00 20-Jun-24 18:00 ALTALINK Outage 233s T1 (233s Beamer) install DDR circuits to transformer and low side breakers, replace T1 transformer bushings 7.46 Days
Continuous		  
14-Jun-24 08:00 27-Jun-24 12:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 5B138-2.83 (SS-5) 2.83L T-tap 5 Sub leg. Outage for pulling and racking new cable up structure 24 and return OH to service afte 13.17 Days
Continuous		  
14-Jun-24 17:31 20-Jun-24 17:30 ALTALINK Outage 277s T1 (277s Hayter), 277s 189 (277s Hayter), 277s 852 (277s Hayter), 277s 2 (277s Hayter) 25 kV switch (277s11) / breaker (277s324X, 277s324N) replacements, SCADA and relay addition 6 Days
Continuous		  
16-Jun-24 09:00 20-Jun-24 16:00 SUNCOR Outage 30EDD-1 624T (30EDD-1), 30EDD-1 627 (30EDD-1), 30EDD-1 628 (30EDD-1) BP - TA maintenance - 30PL2-49 4.29 Days
Continuous		  
17-Jun-24 07:30 20-Jun-24 17:30 ALTALINK RB 603L (138s Windy Flats - 243s Soderglen) maintenance 603L between structures #1 - 109 3.42 Days
Daily		  
17-Jun-24 07:30 20-Jun-24 14:30 ALTALINK Outage 510s ACF11 (510s Sunnybrook), 510s ACF12 (510s Sunnybrook), 510s ACF13 (510s Sunnybrook), 510s ACF14 (510s Sunnybrook), 510s ACF14 - Spare (510s Sunnybrook), 510s 2552 (510s Sunnybrook), 510s 2652 (510s Sunnybrook), 510s 39 (510s Sunnybrook), 510s 40 (510s Sunnybrook) urgent repair; replace 500 kV circuit breaker grading capacitors, outdoor grounding switch maintenances
 3.29 Days
Continuous		  
17-Jun-24 08:00 27-Jun-24 16:00 ATCO RB 9L56 (720s Wabasca - 876s Brintnell) walk up and climbing inspection 10.33 Days
Continuous		  
17-Jun-24 08:00 24-Jun-24 16:00 ATCO RB 7L23 (796s Nipisi - 7L23 tap), 7L23 (858s Narrows Creek - 7L23 tap), 7L23 (732s Mitsue - 7L23 tap) walk up and climbing inspection 7.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ATCO RB 7L120 (788s Hotchkiss - 905s Meikle) walk up and climbing inspection 3.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ATCO RB 7L138 (788s Hotchkiss - 905s Meikle) walk up and climbing inspection 3.33 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) update and test configuration for DDR installation, 735L protection replacement and 233s46 PT addition 4.38 Days
Daily		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 349s Protection & Control (349s Stavely) update settings and test 4.33 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) update 180L protections to 255s 4.33 Days
Daily		  
17-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) update RTU to add 180L breaker fail transfer trip alarms 4.38 Days
Daily		  
17-Jun-24 08:00 21-Jun-24 13:00 ALTALINK TE 55s RTU/SCADA (55s Olds) add SCADA I/O, 2037S protection upgrade, T2 B protection 4.21 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 255s Protection & Control (255s Vulcan) testing 452 C60 breaker controls 4.33 Days
Daily		  
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 25-Jun-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) DWDM hardware upgrades- 2024 CR&U at 9520R 8.38 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 18:00 ATCO TE ATCO RTU/SCADA implement changes to 6500s Barlow Solar SCADA and RTAC to uprate site export and implement new volt-watt control mode 4.42 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 18:00 ATCO TE ATCO RTU/SCADA implement changes to 6501s Deerfoot Solar SCADA and RTAC to uprate site export and implement new volt-watt control mode 4.42 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 54.1TR (SS-54) transformer power factor test, secondary cable test, maintenance, relay fault pressure test, check reversing test and oil sampling MT, TC 3.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 31.2TR (SS-31) tap changer inspection - 31.2-TC, reinhausen 3.33 Days
Continuous		  
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 08:30 20-Jun-24 17:30 ALTALINK RB 172L (83s Taber - 172EL tap), 172L (254s Coaldale - 172EL tap), 172EL (139s Hillridge - 172L tap) FRM component replacement (STR 826-1017) - live line 3.38 Days
Daily		  
17-Jun-24 08:30 20-Jun-24 17:30 ALTALINK RB 172L (254s Coaldale - 370s North Lethbridge) FRM component replacement 172L1022-1195 - live line 3.38 Days
Daily		  
17-Jun-24 09:00 20-Jun-24 17:00 ALTALINK, BHE Outage 879AL (719s Rattlesnake Ridge - 879L tap), 879L (368s Burdett - 879L tap), 879L (244s Bowmanton - 879AL tap), 368s 879 (368s Burdett) repair of oil leakage on main transformer and installation of additional protection alarms on main transformer 3.33 Days
Continuous		  
17-Jun-24 09:00 21-Jun-24 17:30 ATCO RB 7L587 (822s Wolf Lake - 826s Marguerite Lake) reclosing turned off 4.35 Days
Continuous		  
17-Jun-24 09:30 21-Jun-24 17:30 ATCO, ALTALINK Outage 12L70 (12s Heartland - 2029s Heathfield), 2029s 1202 (2029s Heathfield), 2029s 1203 (2029s Heathfield), 12s 12L70 (12s Heartland), 2029s 1202B (2029s Heathfield), 2029s 1203A (2029s Heathfield) PRC-005 trip coil testing on breaker 1202/1203, relay testing 4.33 Days
Continuous		  
17-Jun-24 09:30 21-Jun-24 14:00 ALTALINK Outage 180L (255s Vulcan - 928s East Stavely), 255s T2 (255s Vulcan), 255s 34 (255s Vulcan), 255s 352 (255s Vulcan), 255s 289 (255s Vulcan), 928s 180N (928s East Stavely) install and commission new bus 2 ‘B’ protection, cutover over line LTO statues to AIS relay, replace 452 breaker control relay and replace breaker control module for 255s34 4.19 Days
Continuous		  
17-Jun-24 10:00 05-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 18.31 Days
Continuous		  
17-Jun-24 10:00 20-Jun-24 16:00 ATCO Outage 7L50 (757s Battle River - 491L tap), 757s 704T (757s Battle River), 757s 709 (757s Battle River) 7L50 pole and arm replacement 3.25 Days
Continuous		  
17-Jun-24 12:30 20-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 395s North Holden) live line reclose block for 701L CRU and WMP component replacement (str 1-111) 3.21 Days
Daily		  
17-Jun-24 12:30 21-Jun-24 17:30 ATCO RB 7L701 (757s Battle River - 7LA701 tap) live line reclose block for 701L CRU and WMP component replacement (str 423 - 449) 4.21 Days
Continuous		  
17-Jun-24 12:30 21-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 7LA701 tap) live line reclose block for 701L CRU and WMP component replacement (str 423 - 449) 4.21 Days
Daily		  
17-Jun-24 13:30 20-Jun-24 16:30 ALTALINK Outage 799s T1 (799s Coleman) maintenance and bushing replacement 3.13 Days
Continuous		  
18-Jun-24 07:00 22-Jun-24 17:00 EPCOR Outage 1098L (EP 805s Jasper - Poundmaker), EP 805s J2401 (EP 805s Jasper), EP 805s J2407 (EP 805s Jasper) JDS1 LCR 4.42 Days
Continuous		  
18-Jun-24 07:00 20-Jun-24 17:00 ALTALINK TE 277s RTU/SCADA (277s Hayter) update RTU database 2.42 Days
Daily		  
18-Jun-24 08:00 27-Jun-24 17:00 ALTALINK Outage 677L (305s Acheson - 595s Spruce Grove) structure replacement and replace OHSW with OPGW 9.38 Days
Continuous		  
18-Jun-24 08:00 27-Jun-24 17:00 ALTALINK RB 453L (305s Acheson - 367s Harry Smith) work on 677L in vicinity 9.38 Days
Daily		  
18-Jun-24 09:00 21-Jun-24 17:00 ATCO TE ATCO Telecom Equipment, 893s RTU/SCADA (893s Cavendish) troubleshooting intermittent issue with the IRU radio link between Cappon_T and Cavendish_S.
SUPEP186		 3.33 Days
Continuous		  
19-Jun-24 07:00 20-Jun-24 17:00 EPCOR TE 816s Protection & Control (816s Petrolia) protection blocking for commissioning of P2403 1.42 Days
Continuous		  
19-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink), AltaLink Telecom Equipment DWDM hardware upgrades - 2024 CR&U at 9074R 8.38 Days
Daily		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink), AltaLink Telecom Equipment DWDM hardware upgrades - 2024 CR&U at 9004R 1.38 Days
Continuous		  
19-Jun-24 08:00 20-Jun-24 16:00 ENMAX TE RTU/SCADA (SS-25) SCADA RTU and alarm test 1.33 Days
Daily		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations 1.38 Days
Daily		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK, DOW TE 166s Protection & Control (166s Dow Chemical Fort Saskatchewan) functional testing of 899L protection 1.38 Days
Continuous		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK, DOW Outage 166s 899N (166s Dow Chemical Fort Saskatchewan), 899L (166s Dow Chemical Fort Saskatchewan - 218s Fort Saskatchewan Co-Gen) functional testing on 899L protections 1.38 Days
Continuous		  
19-Jun-24 09:00 20-Jun-24 17:00 ALTALINK Outage 256s C1 (256s Harmattan) weed spraying and cap bank unbalance repair 1.33 Days
Daily		  
19-Jun-24 09:30 20-Jun-24 17:30 ATCO Outage 7L22 (811s Clairmont Lake - 7L88 tap), 811s 708 (811s Clairmont Lake) PRC-005 trip coil testing and test switch mitigation and replacement 1.33 Days
Continuous		  
19-Jun-24 12:00 20-Jun-24 18:00 ALTALINK, Wild Rose Wind 2 Outage 264s 240kV Bus 2 (264s Elkwater), 264s 240kV Bus 3 (264s Elkwater), 264s T1 (264s Elkwater), 264s 352 (264s Elkwater), 264s 252 (264s Elkwater), 264s 52-L1 (264s Elkwater), 264s 89-B1 (264s Elkwater), 264s 89-L1 (264s Elkwater), 264s 289 (264s Elkwater) remove riser from low bus to high bus and install new design with rigid bus in two locations 30 Hours
Continuous		  
19-Jun-24 12:00 20-Jun-24 17:00 Lethbridge TE 241s Protection & Control (241s Uplands) protection outage at 241s & 370s on 734L "A" relays to investigate protection issue 29 Hours
Continuous		  
20-Jun-24 07:00 26-Jun-24 17:00 ALTALINK Outage 74s T2 (74s Janet), 74s 77 (74s Janet) upgrade transformer protection relays 6.42 Days
Continuous		  
20-Jun-24 07:00 26-Jun-24 17:00 ALTALINK TE 74s RTU/SCADA (74s Janet) SCADA configuration update 6.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK Outage 735L (171s Redwater - 233s Beamer), 171s 735X (171s Redwater), 233s 735N (233s Beamer) switch replacement and protection changes 8.42 Days
Continuous		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE 171s RTU/SCADA (171s Redwater) cutover new 735L alarms, controls, and statuses to new SCADA system 8.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE 171s RTU/SCADA (171s Redwater) update configuration for 735L protection upgrade 8.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 233s Protection & Control (233s Beamer), 171s Protection & Control (171s Redwater) equip 2 new channels between 171s and 233s and decommission the old circuits 8.42 Days
Continuous		  
20-Jun-24 07:30 23-Jun-24 17:30 ALTALINK RB 900L (17s Benalto - 63s Red Deer) crews will be doing barehand training at structure #900L1 3.42 Days
Daily		  
20-Jun-24 07:30 20-Jun-24 17:30 ALTALINK RB 848L (17s Benalto - 848AL tap), 848L (378s Shell Caroline - 848AL tap), 848AL (531s Shell Schrader Creek - 848L tap) crews will be doing barehand training at structure #900L1 10 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 31.84L (SS-31 - SS-32), 32B138-31.84 (SS-32), 31B138-31.84 (SS-31) breaker maintenance 8 Hours
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		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 10B138-832 (SS-10), 12B138-832L (SS-12) power factor test 8 Hours
Continuous		  
20-Jun-24 08:00 20-Jun-24 18:00 ALTALINK TE 264s RTU/SCADA (264s Elkwater) implement SCADA changes for MOD and breaker fail alarm 10 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) Power Factor Test - 10PT138-832. 1TR 8 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 18:30 ALTALINK TE 277s Protection & Control (277s Hayter) trip testing for new 25 kV breakers 10.5 Hours
Daily		  
20-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 267s Protection & Control (267s Killarney Lake) revert temporary settings 1.38 Days
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 12.1TR (SS-12) check reversing switch and oil sampling 8 Hours
Continuous		  
20-Jun-24 09:00 20-Jun-24 17:00 ATCO RB 788s 144kV Bus 700BUS1 (788s Hotchkiss) 701T replacement project,
removal of jumper J1 on 144kv bus at 788s Hotchkiss		 8 Hours
Continuous		  
20-Jun-24 09:30 20-Jun-24 15:30 ATCO Outage 834s 502R (834s Wesley Creek), 834s 501 (834s Wesley Creek), 834s 503 (834s Wesley Creek) trip coil testing on 502 breaker 6 Hours
Continuous		  
20-Jun-24 10:00 20-Jun-24 16:00 ATCO Outage 732s 904 (732s Mitsue) PRC-005 - trip coil testing 6 Hours
Continuous		  
20-Jun-24 10:00 20-Jun-24 17:00 ATCO TE 802s RTU/SCADA (802s Michichi Creek), ATCO Telecom Equipment low BES firewall install 7 Hours
Continuous		  
21-Jun-24 08:00 21-Jun-24 16:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 5.9TR (SS-5), 5.10TR (SS-5), 5B138-2.83 (SS-5), 5B138-5BT12 (SS-5), 5MD138-5.9TR (SS-5) substation washing 8 Hours
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		  
22-Jun-24 07:30 24-Jun-24 18:00 ATCO RB 840S 9LS1MD1 (840s McNeill Station) saskpower request - the work is to remove wires and poles from an old tap-off line that is being salvaged 2.44 Days
Continuous		  
22-Jun-24 08:00 27-Jun-24 17:30 ATCO, ALTALINK Outage 7L50 (757s Battle River - 491L tap), 7L50 (526s Buffalo Creek - 491L tap) AltaLink request for Advice for 252s Station (408L, 491L) GOI 5.4 Days
Continuous		  
22-Jun-24 08:00 22-Jun-24 11:00 ALTALINK Outage 252s 138kV Bus (252s Jarrow), 252s T2 (252s Jarrow), 408L (51s Wainwright - 252s Jarrow), 491L (252s Jarrow - 7L50 tap) Create Open Point 'A' 3 Hours
Daily		  
22-Jun-24 08:00 27-Jun-24 17:30 ATCO RB 7L50 (757s Battle River - 491L tap) TPG requirement for 252s station outage
Isolation points: block recloser on 7L50 from 757s		 5.4 Days
Continuous		  
22-Jun-24 11:00 27-Jun-24 11:00 ALTALINK Outage 252s 138kV Bus (252s Jarrow), 252s T2 (252s Jarrow), 491L (252s Jarrow - 7L50 tap), 408L (51s Wainwright - 252s Jarrow) T2 bushings replacement, doble, OBG leak repair. VR2 doble, maintenance, leak repair. Demo old structures and 252s1, 252s3. Install new structures and new 252s1, 252s3 switches. Remove 252s11 from old structures and install on new structures. Replace 1 5 Days
Continuous		  
23-Jun-24 07:00 23-Jun-24 12:00 ALTALINK, ENMAX Outage 74s 24.83X (74s Janet), 24.83L (74s Janet - SS-24) trip testing 74s24.83X from new 74s77 breaker fail relay 5 Hours
Daily		  
23-Jun-24 07:00 23-Jun-24 12:00 ENMAX, ALTALINK Outage 24.83L (74s Janet - SS-24), 74s 24.83X (74s Janet) Altalink outage: trip testing 74s24.83X from new 74s77 breaker fail relay 5 Hours
Continuous		  
23-Jun-24 08:00 23-Jun-24 16:00 ENMAX Outage 9.80L (SS-9 - SS-31), 31.2TR (SS-31), 31.1TR (SS-31), 31.1C (SS-31), 31B138-9.80 (SS-31), 31MD138-31.1TR (SS-31) power factor test - 31PT138-Z5 8 Hours
Continuous		  
23-Jun-24 10:00 26-Jun-24 17:00 ALTALINK Outage 725L (674s Bowron - 725BL tap), 725L (15s Fort MacLeod - 725BL tap), 725BL (240s McBride Lake - 725L tap) Replace crossarms and insulators with line post insulators at structures 2, 162, 163 233 & 234. Replace H-Frame double dead-end crossarm and insulators at structure 147. Replace arms and insulators at structures 231, 232 & 262. Install ground rod and repair downlead at structure 223. 3.29 Days
Continuous		  
23-Jun-24 10:00 26-Jun-24 17:00 ALTALINK Outage 725BL (240s McBride Lake - 725L tap), 725BL54 (725BL tap) maintenance on the 300L 3.29 Days
Continuous		  
23-Jun-24 12:00 23-Jun-24 17:00 ALTALINK, ENMAX Outage 74s 23.80W (74s Janet), 23.80L (74s Janet - SS-23) trip testing 74s24.80 from new 74s77 breaker fail relay 5 Hours
Daily		  
23-Jun-24 12:00 23-Jun-24 17:00 ENMAX, ALTALINK Outage 23.80L (74s Janet - SS-23), 74s 23.80W (74s Janet) Altalink outage: trip testing 74s24.80 from new 74s77 breaker fail relay 5 Hours
Continuous		  
24-Jun-24 07:00 29-Jun-24 17:00 EPCOR Outage T1 (EP Riverview), RW2405 (EP Riverview), RW2401 (EP Riverview), RWAB1 (EP Riverview) doble and RWAB1, RWDS1, RWDS10 disconnect maintenance 5.42 Days
Continuous		  
24-Jun-24 07:00 24-Jun-24 17:00 EPCOR Outage 805s C1 (805s Jasper) Jasper: J2408 pole density switch repair 10 Hours
Continuous		  
24-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE 63s RTU/SCADA (63s Red Deer) update RTU configuration to add 648L channel fail delay timer 4.42 Days
Continuous		  
24-Jun-24 07:00 28-Jun-24 18:00 ALTALINK TE 287s RTU/SCADA (287s Hazelwood) AIS 1156 DER project – add SEL2411 4.46 Days
Daily		  
24-Jun-24 07:30 27-Jun-24 18:00 ALTALINK Outage 793L (87s Gaetz - 535s Joffre), 535s 6052 (535s Joffre), 535s 6152 (535s Joffre) migrate and commission all L6-793L, 535s6052, 535s6152, associated line protections and associated controls 3.44 Days
Continuous		  
24-Jun-24 07:30 26-Jun-24 17:30 ALTALINK RB 1201L (520s Bennett - BCH Cranbrook) AML crews will be doing barehand training at 1201L2,103,265 2.42 Days
Daily		  
24-Jun-24 08:00 28-Jun-24 16:00 ATCO Outage 2075s 902T (2075s Newell), 2075S 930 (2075s Newell), 2075s ACF21 (2075s Newell) annual SVC maintenance 4.33 Days
Continuous		  
24-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and migrating and commissioning of 793L protections, recloser, 6152, 6052, alarms controls and status 4.38 Days
Continuous		  
24-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) update and test configuration for DDR installation, 735L protection replacement, & 233s46 PT addition 4.38 Days
Daily		  
24-Jun-24 08:00 25-Jun-24 16:00 ENMAX Outage 16.60L (SS-16 - SS-34), 34B69-16.60 (SS-34), 16B69-16.60 (SS-16) HV breaker maintenance - 34B69-16.60 1.33 Days
Continuous		  
24-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE 255s Protection & Control (255s Vulcan) A85-1-2-3/RAS, B85-1-2-3/RAS work 3.38 Days
Daily		  
24-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 8.1TR (SS-8), 8.2TR (SS-8), 8B138-7A0 (SS-8), 8B138-6A0 (SS-8), 6A01 (SS-8), 6A02 (SS-8), 6A10 (SS-8), 7A1 (SS-8), 7A11 (SS-8) installing, commission and function check ASW-1 panel and DFR CT connections from 8.1TR and 8.2TR 3.33 Days
Continuous		  
24-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE 554s RTU/SCADA (554s Travers) fault reporting implementation 3.38 Days
Daily		  
24-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 7.2TR (SS-7) transformer power factor test 3.33 Days
Continuous		  
24-Jun-24 08:00 25-Jun-24 16:00 ENMAX Outage 5.6TR (SS-5) tap changer inspection 1.33 Days
Continuous		  
24-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 20.1TR (SS-20) transformer power factor test 3.33 Days
Continuous		  
24-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) testing/commissioning of the new RTU 4.38 Days
Daily		  
24-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) removing A & B protections one at a time for testing/commissioning of the new RTU 4.38 Days
Daily		  
24-Jun-24 08:00 24-Jun-24 16:00 ENMAX TE Protection & Control (SS-13) 13PT138-Z31 outage - power factor test - 13PT138-Z31 8 Hours
Continuous		  
24-Jun-24 08:00 24-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment 9063R Red Deer work 9 Hours
Daily		  
24-Jun-24 09:00 28-Jun-24 17:30 ATCO Outage 826s 702 (826s Marguerite Lake) investigate leak and replace o-rings
, top up breaker pole 1, replace densi meter covers		 4.35 Days
Continuous		  
24-Jun-24 09:00 25-Jun-24 16:00 ATCO Outage 732s 705 (732s Mitsue) PRC-005 - trip coil testing, breaker maintenance 31 Hours
Continuous		  
24-Jun-24 09:00 27-Jun-24 16:00 ATCO Outage 802s 703T (802s Michichi Creek), 802s 703 (802s Michichi Creek) 703 SF6 , complete testing
703T, tap changer refurbishment, test switch mitigation and replacement - 50BF/703 at 802s		 3.29 Days
Continuous		  
24-Jun-24 09:00 28-Jun-24 13:00 ALTALINK TE 214s RTU/SCADA (214s Innisfail) commission new 1156AIS relay 4.17 Days
Continuous		  
24-Jun-24 09:00 28-Jun-24 13:00 ALTALINK TE 281s RTU/SCADA (281s Johnson) commission new 1156AIS relay 4.17 Days
Continuous		  
24-Jun-24 09:00 28-Jun-24 13:00 ALTALINK TE 55s RTU/SCADA (55s Olds) add scada I/O, 2037S protection upgrade, T2 B protection 4.17 Days
Continuous		  
24-Jun-24 09:00 27-Jun-24 17:00 ALTALINK TE 554s Protection & Control (554s Travers) relay outages to implement fault reporting 3.33 Days
Daily		  
24-Jun-24 09:00 27-Jun-24 17:00 ALTALINK TE 69s RTU/SCADA (69s North Barrhead) update configuration for fault reporting implementation 3.33 Days
Daily		  
24-Jun-24 09:00 27-Jun-24 17:00 ALTALINK TE 69s Protection & Control (69s North Barrhead) fault reporting implementation 3.33 Days
Daily		  
24-Jun-24 09:00 28-Jun-24 17:00 ALTALINK TE 17s Protection & Control (17s Benalto), 17s RTU/SCADA (17s Benalto) update RTU configuration to add 637L channel fail delay timer 4.33 Days
Continuous		  
24-Jun-24 09:00 05-Jul-24 17:00 BCH RB 2L294 (BCH A. A. Lambert - BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Nelway) hazard trees 71-02 to 78-02 11.33 Days
Daily		 AB-BC
24-Jun-24 09:30 28-Jun-24 17:30 ATCO, ALTALINK Outage 12L85 (12s Heartland - 2029s Heathfield), 2029s 1207 (2029s Heathfield), 2029s 1208 (2029s Heathfield), 12s 12L85 (12s Heartland), 2029s 1207B (2029s Heathfield), 2029s 1208A (2029s Heathfield) PRC-005 - trip coil testing, breaker 1207 and 1208, protection testing - multiple devices related to 12L85 and breakers 1207 and 1208 4.33 Days
Continuous		  
24-Jun-24 09:30 24-Jun-24 17:00 ALTALINK Outage 74s C3 (74s Janet), 74s C4 (74s Janet), 74s 104 (74s Janet) trip testing from new T2 protections, breaker fail initiate from T2 protections, block close testing from T2 and protections trip testing from new 74s77 breaker fail relay 7.5 Hours
Daily		  
24-Jun-24 09:30 28-Jun-24 17:30 ATCO Outage 834s 901T (834s Wesley Creek), 834s 901 (834s Wesley Creek), 834s 904 (834s Wesley Creek), 834s 501 (834s Wesley Creek), 834s 701TD (834s Wesley Creek) PRC-005 - SPR testing 901T, test switch mitigation and replacement 87TA/901T and 87TB/901T, repair AUX contacts on 901TD 4.33 Days
Continuous		  
24-Jun-24 09:30 25-Jun-24 17:30 ATCO Outage 811s 701C (811s Clairmont Lake) PRC-005 - trip coil testing 701CCS and maintenance 1.33 Days
Continuous		  
24-Jun-24 09:30 27-Jun-24 18:00 ALTALINK Outage 255s T1 (255s Vulcan) install new 255s5 VT on 16LN feeder structure 3.35 Days
Continuous		  
24-Jun-24 10:00 27-Jun-24 16:00 ATCO Outage 7L50 (757s Battle River - 491L tap) 7L50 Pole and arm replacement 3.25 Days
Continuous		  
24-Jun-24 10:00 24-Jun-24 12:00 ALTALINK Outage 74s 352 (74s Janet) Trip Testing from new T2 Protections,Breaker Fail Initiate from T2 Protections,Block Close Testing from T2 Protections, & Trip Testing from new 74s77 Breaker Fail Relay 2 Hours
Daily		  
24-Jun-24 12:00 24-Jun-24 17:00 ALTALINK Outage 74s 76 (74s Janet) Trip Testing from new 74s77 Breaker Fail Relay 5 Hours
Daily		  
24-Jun-24 12:30 28-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 7LA701 tap) 701L CRU & WMP component replacement (STR 423 - 449) - live line 4.21 Days
Daily		  
24-Jun-24 12:30 28-Jun-24 17:30 ATCO RB 7L701 (757s Battle River - 7LA701 tap) AltaLink scope - 701L CRU & WMP Component Replacement (STR 423 - 449), live lline 4.21 Days
Continuous		  
24-Jun-24 12:30 28-Jun-24 12:30 ALTALINK Outage 650s SVC (650s Hansman Lake), 650s 352 (650s Hansman Lake), 650s 252 (650s Hansman Lake), 650s 489 (650s Hansman Lake) SVC resistor replacement and maintenance 4 Days
Continuous		  
24-Jun-24 12:30 28-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 395s North Holden) 701L CRU & WMP component replacement (STR 1-111) - live line 4.21 Days
Daily		  
24-Jun-24 13:00 27-Jun-24 15:30 ALTALINK Outage 20s T5 (20s Ghost), 20s 8 (20s Ghost) 20sT5 - Bushing replacement. 3.1 Days
Continuous		  
25-Jun-24 00:00 26-Jun-24 00:00 SUNCOR TE 29EDD-1 Protection & Control (29EDD-1 Millennium), 29EDD-34 Protection & Control (29EDD-34) BP - 29EDD-1 / 29EDD-34 - firmware upgrade powerlogic ION 24 Hours
Continuous		  
25-Jun-24 07:00 25-Jun-24 12:00 ALTALINK Outage 74s 2252 (74s Janet) maintenance
5 Hours
Daily		  
25-Jun-24 07:00 28-Jun-24 18:00 ALTALINK Outage 870L (262s Rocky Mountain House - 263s Strachan) Crews will be replacing cross-arms with new line post insulators on Structures #187, 188, 191, 195 and re-frame Structure #178. 3.46 Days
Continuous		  
25-Jun-24 07:00 25-Jun-24 16:00 ALTALINK, ENBRIDGE TE 485s Protection & Control (485s Blackspring Ridge) relay outages to implement fault reporting 9 Hours
Daily		  
25-Jun-24 07:00 26-Jun-24 17:00 EPCOR Outage 330P GT3 (330p Genesee), 330p 1207 (330p Genesee), 330p 1208 (330p Genesee), 330p 12GT3D (330p Genesee) apparatus- arrestor doble, aerial- connector repair 1.42 Days
Continuous		  
25-Jun-24 08:00 26-Jun-24 17:00 ATCO TE 788s Protection & Control (788s Hotchkiss) add 700PT1 voltage source to new 701T relay 1.38 Days
Continuous		  
25-Jun-24 08:00 25-Jun-24 12:00 ENMAX TE Protection & Control (SS-22) 22PT138-Z32 outage power factor test 4 Hours
Continuous		  
25-Jun-24 08:00 25-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 580s RTU/SCADA (580s Sylvan Lake) outage at 580s Sylvan Lake 9 Hours
Daily		  
25-Jun-24 08:30 27-Jun-24 17:30 ALTALINK RB 1201L (520s Bennett - BCH Cranbrook) guy wire tool testing on 1201L400 2.38 Days
Daily		  
25-Jun-24 11:00 26-Jun-24 15:00 ATCO TE 732s RTU/SCADA (732s Mitsue) IF wiring changes in the 1Z panel for DGA alarm addition 28 Hours
Continuous		  
25-Jun-24 12:00 25-Jun-24 17:00 ALTALINK Outage 74s 2352 (74s Janet) maintenance 5 Hours
Daily		  
25-Jun-24 12:00 25-Jun-24 16:00 ENMAX TE Protection & Control (SS-22) 22PT138-Z31 outage, power factor test 4 Hours
Continuous		  
26-Jun-24 07:00 26-Jun-24 12:00 ALTALINK Outage 74s 2852 (74s Janet) trip testing from new T2 Protections, breaker fail initiate from T2 protections, block close testing from T2 protections and trip testing from new 74s77 breaker fail relay 5 Hours
Daily		  
26-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE 233s Protection & Control (233s Beamer) move BF initiates & trips and add DDR circuits 2.38 Days
Daily		  
26-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 21.61L (SS-21 - SS-34), 34B69-21.61 (SS-34), 21B69-21.61 (SS-21) breaker maintenance 1.33 Days
Continuous		  
26-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 31.84L (SS-31 - SS-32), 32.3TR (SS-32), 32B138-32BT5 (SS-32), 32B138-31.84 (SS-32), 31B138-31.84 (SS-31) power factor test and adjust and lubricate switch 1.33 Days
Continuous		  
26-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE AML 511s RTU/SCADA (AML 511s Crossings), AltaLink Telecom Equipment DWDM hardware upgrades 1.38 Days
Continuous		  
26-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 39.2TR (SS-39) tap changer inspection, check reversing switch, oil sampling and tap changer oil filtration maintenance 1.33 Days
Continuous		  
26-Jun-24 08:00 27-Jun-24 16:00 ENMAX Outage 35.2TR (SS-35) qualitrol temp monitor not reading accurately and tap changer oil filtration maintenance 1.33 Days
Continuous		  
26-Jun-24 08:00 04-Jul-24 18:00 SUNCOR TE 29EDD-1 Protection & Control (29EDD-1 Millennium), 29EDD-34 Protection & Control (29EDD-34), 29EDD-94 Protection & Control (29EDD-94 Voyageur) DFR Alarms updates and testing 8.42 Days
Continuous		  
26-Jun-24 08:00 26-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment 719L TPR 'B' will be OOS for 15 minutes while 'A' TPR will be in service at all times. 1201L RAS (ILRAS) will be re- routed in 50 ms. 9 Hours
Continuous		  
26-Jun-24 08:30 26-Jun-24 17:00 ALTALINK TE 221s RTU/SCADA (221s Sunken Lake) T2 revenue meter replacement to ION 9000 8.5 Hours
Daily		  
26-Jun-24 09:00 27-Jun-24 16:00 ATCO Outage 732s 706 (732s Mitsue) prc-005 trip coil testing, breaker maintenance 31 Hours
Continuous		  
26-Jun-24 09:00 26-Jun-24 17:00 ATCO TE ATCO Telecom Equipment replace aprisa link from Goodfish to Kidney lake to trouble shoot connection errors 8 Hours
Continuous		  
26-Jun-24 09:30 27-Jun-24 17:30 ATCO Outage 811s 707 (811s Clairmont Lake), 7L68 (730s Rycroft - 811s Clairmont Lake), 730s 704 (730s Rycroft) min oil HLR partial testing 1.33 Days
Continuous		  
26-Jun-24 10:00 26-Jun-24 12:00 ATCO Outage 957s 901 (957s McClelland) prc-005 trip coil testing, 2 Hours
Continuous		  
26-Jun-24 10:00 26-Jun-24 17:00 ATCO TE ATCO Telecom Equipment, 977s RTU/SCADA (977s Salt Creek) low Bes firewall install 7 Hours
Continuous		  
26-Jun-24 12:01 26-Jun-24 17:00 ALTALINK Outage 74s 3852 (74s Janet) trip testing from new T2 Protections, breaker fail initiate from T2 protections, block close testing from T2 protections and trip testing from new 74s77 breaker fail relay 4.98 Hours
Continuous		  
26-Jun-24 12:01 26-Jun-24 14:00 ATCO Outage 957s 902 (957s McClelland) prc-005 trip coil testing 119 Mins
Continuous		  
26-Jun-24 14:01 26-Jun-24 16:00 ATCO Outage 957s 903 (957s McClelland) prc-005 trip coil testing 119 Mins
Continuous		  
26-Jun-24 16:00 26-Jun-24 18:00 CMH TE Medicine Hat ICCP Outage, Medicine Hat RAS/SCADA, Medicine Hat RTU/SCADA, Medicine Hat IED/SCADA We will be replacing the Core Router in the Main Datacenter resulting in a loss of communications between CMH Transmission and Distribution Control Room and all remote sites.

The Routes and interfaces will be failed over one at a time. 		2 Hours
Continuous		  
27-Jun-24 08:00 27-Jun-24 15:00 ATCO TE 875s RTU/SCADA (875s Algar) low bes firewall install 7 Hours
Continuous		  
27-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment 9244R supervisory and TPR 9 Hours
Daily		  
27-Jun-24 09:00 27-Jun-24 17:00 ALTALINK Outage 108s T2 (108s Amelia), 108s 452 (108s Amelia), 108s 352 (108s Amelia) sample oil, test CVT and lower oil in CVT head 8 Hours
Continuous		  
27-Jun-24 09:30 27-Jun-24 17:30 ATCO TE 734s Protection & Control (734s Sturgeon), 734s RTU/SCADA (734s Sturgeon) PRC-006 UFLS relay settings updates 8 Hours
Continuous		  
27-Jun-24 10:00 27-Jun-24 16:00 ATCO TE 970s Protection & Control (970s Bourque) setting change on 7L574 21A relay only 6 Hours
Continuous		  
27-Jun-24 11:00 27-Jun-24 17:30 ALTALINK Outage 252s 138kV Bus (252s Jarrow), 252s Jarrow, 408L (51s Wainwright - 252s Jarrow), 491L (252s Jarrow - 7L50 tap), 252s 408 (252s Jarrow), 252s T2 (252s Jarrow) close open point 'A' 6.5 Hours
Daily		  
27-Jun-24 13:00 27-Jun-24 18:00 ENMAX Outage 2.83L (SS-2 - 2.83L tap), 2.83L (SS-13 - 2.83L tap), 2.83L (SS-5 - 2.83L tap), 13B138-2.83 (SS-13), 5B138-2.83 (SS-5) outage required to return 2.83L t-tap 5 sub leg 5 Hours
Continuous		  
28-Jun-24 08:00 28-Jun-24 17:00 ALTALINK Outage 786L (799s Coleman - BCH Natal) Repair woodpecker damage on structures 97 & 109 Hardware tighten structure 108. 9 Hours
Daily		 AB-BC
28-Jun-24 08:00 28-Jun-24 17:00 BCH Outage 1L275 (799s Coleman - BCH Natal) coordinated outage 786L/1L275 9 Hours
Continuous		 AB-BC
28-Jun-24 08:00 28-Jun-24 18:00 ENMAX Outage 6.82L (SS-6 - SS-41), 33.83L (SS-33 - SS-41), 41.1C (SS-41), 41.2TR (SS-41), 41B138-41BT3 (SS-41), SW83 (SS-41), SW87 (SS-41), 41B138-6.82 (SS-41), 33B138-33.83 (SS-33) summer substation washing 10 Hours
Continuous		  
28-Jun-24 08:00 28-Jun-24 15:00 ATCO TE 839s Protection & Control (839s Daishowa) PRC-025 relay setting changes and testing for
87TA/701T,87TB/701T		 7 Hours
Continuous		  
28-Jun-24 08:00 28-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment relay outage at 253s Blackie 9 Hours
Daily		  
28-Jun-24 17:00 26-Jul-24 17:00 EPCOR Outage 816s P2406 (816s Petrolia) Petrolia: P2406 Breaker LCR 28 Days
Continuous		  

Prepared On:   2024-06-19   15:12:15

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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