Alberta Electric System Operator
System Co-ordination Plan
2024-04-18 to 2024-04-26
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		  
15-Mar-23 18:01 30-Apr-24 18:00 SUNCOR Outage 29EDD-71 752-4651 (29EDD-71) breaker will remain offline for undetermined period of time 412 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		  
08-Jan-24 07:00 30-Apr-24 17:00 EPCOR Outage T2 (Rossdale), R721 (Rossdale), R723 (Rossdale), RAB2 (Rossdale) rossdale transformer assembly and scaffold build 113.38 Days
Continuous		  
15-Jan-24 07:00 20-Apr-24 17:00 EPCOR Outage 113s T2 (113s Inland Cement) emergency iInvestigation 96.38 Days
Continuous		  
19-Feb-24 10:00 17-Jun-24 17:00 ATCO TE 863s RTU/SCADA (863s Paintearth) modifications to existing RTU and new SCADA equipment 119.25 Days
Continuous		  
19-Feb-24 11:00 10-Jun-24 17:30 ATCO TE 863S 240kV Breaker Relays, 863S 25kV Breaker Relays disable all breaker fail protection for the duration of the project 112.23 Days
Continuous		  
19-Feb-24 11:00 06-Jun-24 17:30 ATCO TE 863S 240kV Bus Relays install new 900BS1 protection panel 108.23 Days
Continuous		  
26-Feb-24 07:00 10-May-24 17:00 EPCOR TE EP 803s Protection & Control (EP 803s Lambton) protection blocking for annual relay maintenance 74.38 Days
Continuous		  
04-Mar-24 08:00 22-Apr-24 08:59 ALTALINK Outage 746s T1 (746s Sherwood Park) replace T1 and NGR, cutover protection and controls of all devices in GOI zone to new control building 49 Days
Continuous		  
04-Mar-24 08:00 30-Apr-24 16:00 ALTALINK TE 746s RTU/SCADA (746s Sherwood Park) configuration updates for A-B/87/T1, L1, L8, L2 feeder protection and cutovers of controls for 746s3, s5, s34N, s40,s173W, s474X 57.29 Days
Daily		  
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		  
11-Mar-24 07:00 30-Apr-24 17:00 EPCOR TE 665s Protection & Control (665s Dome) protection blocking for annual relay maintenance 50.42 Days
Continuous		  
18-Mar-24 14:30 29-Apr-24 14:00 ATCO Outage 863s 902T (863s Paintearth) protection upgrade, commission new wiring/trransformer protection, and new transformer protection panel 41.98 Days
Continuous		  
22-Mar-24 12:22 22-Apr-24 06:59 ALTALINK Outage 310p 1852 (310p Sundance) emergency repair 30.78 Days
Continuous		  
25-Mar-24 07:00 19-Apr-24 17:00 EPCOR Outage 987s T2 (987s Clover Bar), 987s T4 (987s Clover Bar), 987s C2406 (987s Clover Bar), 987s C2405 (987s Clover Bar), 987s C2408 (987s Clover Bar), 987s CDS31 (987s Clover Bar), 987s CC721 (987s Clover Bar) T2 and T4 bay outage for final tie in of 1191L bay 25.42 Days
Continuous		  
25-Mar-24 13:50 30-Apr-24 17:00 BCH Outage 5CB1 (BCH Selkirk) repair damaged equipment, BC maintenance does not affect the Alberta ATC 36.13 Days
Continuous		 AB-BC
31-Mar-24 08:00 18-Apr-24 16:00 ENMAX Outage 3GSU-XF-001 (SS-25) electrical testing 18.33 Days
Continuous		  
01-Apr-24 00:00 01-May-24 00:00 SUNCOR Outage 29EDD-71 29PT-235 (29EDD-71), 29EDD-71 752-4642 (29EDD-71), 29EDD-71 752-4641 (29EDD-71) FB-maintenance and testing 30 Days
Continuous		  
01-Apr-24 08:00 10-May-24 17:00 ALTALINK TE 244s RTU/SCADA (244s Bowmanton) updating RTU configuration 39.38 Days
Daily		  
02-Apr-24 07:00 07-May-24 17:00 EPCOR Outage T1 (Garneau), GT1 (Garneau) Garneau S/S Tx1 bay outage 35.42 Days
Continuous		  
02-Apr-24 08:00 24-Apr-24 16:00 SUNCOR Outage 29PL6-5 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-1 29EDD1s1652 (29EDD-1 Millennium), 29EDD-1 29EDD1s1752 (29EDD-1 Millennium), 29EDD-1 29PS-196 (29EDD-1 Millennium), 29PS-44 (29EDD-22) maintenance and relay upgrades 22.33 Days
Continuous		  
08-Apr-24 07:00 19-Apr-24 17:00 EPCOR Outage 330p 1201 (330p Genesee) Genesee: 1201 Breaker Pole Investigation 11.42 Days
Continuous		  
08-Apr-24 08:00 28-Apr-24 18:00 ENMAX Outage 1.82L (SS-1 - SS-5), 5.1TR (SS-5), 5.6TR (SS-5), 5.8TR (SS-5), 5B138-5BT12 (SS-5), 5B138-5BT7 (SS-5), 5MD138-5.6TR (SS-5), 5MD138-5.8TR (SS-5), 5B138-1.82 (SS-5) switches maintenance and substation washing 20.42 Days
Continuous		  
08-Apr-24 08:00 10-May-24 17:00 ALTALINK TE 523s RTU/SCADA (523s Bullshead) updating RTU configuration for the Dunmore project 32.38 Days
Daily		  
08-Apr-24 08:00 18-Apr-24 16:00 ALTALINK TE AltaLink Telecom Equipment DWDM node addition upgrades - 2023 CR&U at 17s Benalto 10.33 Days
Continuous		  
08-Apr-24 09:00 26-Apr-24 17:00 ATCO TE 728s Protection & Control (728s Mercer Hill), 728s RTU/SCADA (728s Mercer Hill) protection and RTU updates 18.33 Days
Continuous		  
08-Apr-24 10:00 19-Apr-24 16:00 ATCO Outage 728s 701T (728s Mercer Hill), 728s 501TD (728s Mercer Hill), 728s 503 (728s Mercer Hill), 728s 52-1 (728s Mercer Hill), 728s 52-2 (728s Mercer Hill) breaker replacement 11.25 Days
Continuous		  
08-Apr-24 10:00 19-Apr-24 17:30 ATCO Outage 786s SVC (786s High Level), 786s 703T (786s High Level), 786s 703 (786s High Level) 703T leak repair 11.31 Days
Continuous		  
08-Apr-24 10:00 19-Apr-24 17:30 ATCO TE 786s RTU/SCADA (786s High Level) qualitrol ITM/ETM replacement and update RTU 11.31 Days
Continuous		  
08-Apr-24 10:55 02-Jun-24 17:00 ATCO Outage 716s 701T (716s Lloydminster), 716s 703 (716s Lloydminster) 716s rebuild 55.25 Days
Continuous		  
08-Apr-24 11:00 02-Jun-24 17:00 ATCO Outage 716s 701 (716s Lloydminster) 716s rebuild:
7L749 new line relay install & commission		 55.25 Days
Continuous		  
08-Apr-24 11:00 02-Jun-24 17:00 ATCO Outage 716s 701C (716s Lloydminster) 716s rebuild: 701C new relay install & commission
 55.25 Days
Continuous		  
09-Apr-24 10:00 02-Jun-24 18:00 ATCO TE 716s Protection & Control (716s Lloydminster) settings changes on 7L42 protection for 716S Sub Rebuild closing 700D1 at 716s 54.33 Days
Continuous		  
09-Apr-24 10:00 02-Jun-24 18:00 ATCO TE 751s Protection & Control (751s Hill) settings changes on 7L42 protection for 716S Sub Rebuild closing 700D1 at 716s 54.33 Days
Continuous		  
09-Apr-24 15:00 18-Jun-24 16:00 ALTALINK Outage 151s C1 (151s Strathmore) broken 70.04 Days
Continuous		  
11-Apr-24 08:00 24-Apr-24 16:00 Syncrude Outage UT1 (Aurora) SCL - downstream maintenance on the 15kV Bus 13.33 Days
Continuous		  
12-Apr-24 08:00 23-Apr-24 18:00 Syncrude Outage 14 (Aurora) breaker 52-14 replacement 11.42 Days
Continuous		  
12-Apr-24 17:00 10-May-24 17:00 EPCOR Outage 987s CDS45 (987s Cloverbar) repair of damage 240 kV CVT in order to properly energize 1191L bay 28 Days
Continuous		  
13-Apr-24 07:00 20-Apr-24 18:00 ALTALINK Outage 924L (102s Langdon - 356s Milo) urgent conductor repair 7.46 Days
Continuous		  
13-Apr-24 07:30 20-Apr-24 17:30 ALTALINK RB 927L (102s Langdon - 356s Milo) required due to proximity 7.42 Days
Daily		  
13-Apr-24 08:00 23-Apr-24 16:00 SUNCOR Outage 29PL9-6 (29EDD-1 Millennium - 29EDD-34), 29EDD-1 952-105 (29EDD-1 Millennium), 29EDD-1 952-106 (29EDD-1 Millennium), 29EDD-34 29-952-111 (29EDD-34), 29EDD-34 29-952-112 (29EDD-34) breakers, CTs & disconnect switches maintenance 10.33 Days
Continuous		  
13-Apr-24 08:00 20-Apr-24 17:00 ALTALINK Outage 611L (186s Dry Creek - 391S Balzac), 391s 611 (391s Balzac), 186s 611 (186s Dry Creek) 611L line move 7.38 Days
Continuous		  
15-Apr-24 07:00 17-May-24 17:00 EPCOR Outage 816s P2402 (816s Petrolia), 816s P2401 (816s Petrolia), 816s T1 (816s Petrolia) P2401 Breaker LCR 32.42 Days
Continuous		  
15-Apr-24 07:00 19-Apr-24 18:00 ALTALINK Outage 925L (63s Red Deer - 74s Janet) component replacement between structures #1 - 369 4.46 Days
Continuous		  
15-Apr-24 07:00 18-Apr-24 17:00 EPCOR Outage K721 (Kennedale), 72CK13 (987s Clover Bar - Kennedale) breaker maintenance 3.42 Days
Continuous		  
15-Apr-24 07:00 19-Apr-24 18:00 ALTALINK TE 74s Protection & Control (74s Janet) 1003L protection outage to add telecom channel and update relay firmware and end to end testing 4.46 Days
Continuous		  
15-Apr-24 07:00 19-Apr-24 18:00 ALTALINK TE 74s Protection & Control (74s Janet) 985L protection outage to add telecom channel and update relay firmware and end to end testing 4.46 Days
Daily		  
15-Apr-24 07:00 19-Apr-24 18:00 ALTALINK TE 74s RTU/SCADA (74s Janet) as part of 1003L teleportation upgrade, ethernet switch may need to be power cycled during setting changes 4.46 Days
Daily		  
15-Apr-24 07:00 19-Apr-24 18:00 ENMAX, ALTALINK TE 985L (74s Janet - SS-25) 985L A and B protection end to end testing and RAS scheme testing 4.46 Days
Daily		  
15-Apr-24 07:00 19-Apr-24 18:00 ENMAX, ALTALINK TE 1003L (74s Janet - SS-25) 1003L A and B protection end to end testing and RAS scheme testing 4.46 Days
Daily		  
15-Apr-24 07:00 19-Apr-24 18:00 ENMAX TE Protection & Control (SS-25) 25sub RAS A and B protection end to end testing and commissioning 4.46 Days
Daily		  
15-Apr-24 07:00 18-Apr-24 18:00 ENMAX Outage 41.2TR (SS-41) grounding deficiency improvements 3.46 Days
Continuous		  
15-Apr-24 07:00 19-Apr-24 17:00 ALTALINK, EPCOR RB 1044L (EP 805s Jasper - 816s Petrolia) 1044L reclosure block at Jasper 4.42 Days
Continuous		  
15-Apr-24 07:30 19-Apr-24 17:30 ALTALINK RB 1082L (63s Red Deer - 287s Hazelwood) crews working within close proximity on 925L 4.42 Days
Daily		  
15-Apr-24 07:30 19-Apr-24 17:30 ALTALINK RB 929L (74S Janet - 287s Hazelwood) crews working within close proximity on 925L 4.42 Days
Daily		  
15-Apr-24 07:30 19-Apr-24 17:30 ALTALINK RB 901AL (64s East Crossfield - 901L tap), 901L (63s Red Deer - 901AL tap), 901L (74s Janet - 901AL tap) crews working within close proximity on 925L between Structures 901L1 - 901L402 4.42 Days
Daily		  
15-Apr-24 08:00 28-Apr-24 16:00 ENMAX Outage 16.63L (SS-16 - SS-36), 36.5TR (SS-36), 36B69-16.63/36.5TR (SS-36), 16B69-16.63 (SS-16) line protection upgrade 13.33 Days
Continuous		  
15-Apr-24 08:00 28-Apr-24 18:00 SUNCOR TE 29EDD-94 RTU/SCADA (29EDD-94 Voyageur), 29EDD-94 406T (29EDD-94 Voyageur), 29EDD-94 407T (29EDD-94 Voyageur), 29PL9-16 (29EDD-1 Millennium - 29EDD-94 Voyageur), 29PL9-17 (29EDD-1 Millennium - 29EDD-94 Voyageur), 29EDD-94 29PP-98 260kV Bus (29EDD-94 Voyageur) perform firmware upgrades and relay testing 13.42 Days
Continuous		  
15-Apr-24 08:00 19-Apr-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and make LAN modifications to add new SEL-2440s and LAN devices 4.38 Days
Continuous		  
15-Apr-24 08:00 19-Apr-24 16:00 ENMAX TE Protection & Control (SS-25) 985L and 1003L protection upgrades and commissioning and trip circuit testing 4.33 Days
Daily		  
15-Apr-24 08:00 19-Apr-24 16:00 ENMAX TE Protection & Control (SS-25) 25sub 240 kV Zone 43, Zone 44, and Zone 45 A and B Bus differential protection outages required for RAS scheme testing 4.33 Days
Daily		  
15-Apr-24 08:00 19-Apr-24 17:00 ALTALINK TE 251s RTU/SCADA (251s Whitla) updating RTU configurations for the Dunmore project 4.38 Days
Daily		  
15-Apr-24 08:00 18-Apr-24 16:00 ALTALINK TE AltaLink Telecom Equipment upgrade DWDM nodes at 511s 3.33 Days
Continuous		  
15-Apr-24 08:00 28-Apr-24 16:00 ENMAX TE Protection & Control (SS-36) 36 sub autoswitching and Z32 bus differential protection disabled for 16.63 line protection upgrade 13.33 Days
Daily		  
15-Apr-24 08:00 18-Apr-24 16:00 ALTALINK TE AltaLink Telecom Equipment upgrade DWDM nodes at 9074R 3.33 Days
Continuous		  
15-Apr-24 08:00 18-Apr-24 16:00 ALTALINK TE AML 511s Protection & Control (AML 511s Crossings), AML 511s RTU/SCADA (AML 511s Crossings) upgrade DWDM nodes at 9074R 3.33 Days
Continuous		  
15-Apr-24 08:00 18-Apr-24 16:00 ALTALINK TE AltaLink Telecom Equipment upgrade DWDM nodes at 9000R 3.33 Days
Continuous		  
15-Apr-24 10:00 02-May-24 18:00 ALTALINK Outage 48s T1 (48s Pocaterra), 48s T2 (48s Pocaterra) adding new equipment 17.33 Days
Continuous		  
15-Apr-24 10:00 18-Apr-24 14:00 ALTALINK Outage 709L (54s Fort Saskatchewan - 172s Sherritt), 54s 709N (54s Fort Saskatchewan), 172s 709X (172s Sherritt) replace failed 709L B protection and end to end testing 3.17 Days
Continuous		  
15-Apr-24 10:00 18-Apr-24 14:00 ALTALINK TE 54s RTU/SCADA (54s Fort Saskatchewan) replace failed 709L B protection 3.17 Days
Daily		  
15-Apr-24 10:00 18-Apr-24 14:00 ALTALINK TE 172s RTU/SCADA (172s Sherritt Gordon) replace failed 709L B protection 3.17 Days
Daily		  
15-Apr-24 13:30 19-Apr-24 17:00 ALTALINK Outage 28s T2 (28s West Brooks) 28sT2 PRC5, leak repair and maintenance 4.15 Days
Continuous		  
16-Apr-24 07:00 30-Apr-24 18:00 ALTALINK Outage 701L (223s Strome - 7LA701 tap) 701L CRU and WMP component replacement (str 320D - 422) 14.46 Days
Continuous		  
16-Apr-24 07:00 30-Apr-24 18:00 ATCO Outage 7L701 (757s Battle River - 7LA701 tap) AltaLink scope - 701L CRU and WMP component replacement (str 320D - 422) 14.46 Days
Continuous		  
16-Apr-24 07:00 18-Apr-24 17:00 EPCOR Outage 330p 1214 (330p Genesee), 330p 1215 (330p Genesee), 330p 1215A (330p Genesee), 330p 1214B (330p Genesee) carona ball replacement 2.42 Days
Continuous		  
16-Apr-24 07:30 18-Apr-24 17:30 ALTALINK RB 740L (740AL tap - 743L tap), 740L (39s Bickerdike - 740AL tap), 740L (426s Coalspur - 743L tap), 762L (101s Cheviot - 740L tap) repairing woodpecker damage on 762L, 743L, 740L (str52A - 264) 2.42 Days
Daily		  
16-Apr-24 08:30 18-Apr-24 17:30 ALTALINK Outage 289s T1 (289s Saunders Lake) doble and maintenance 2.38 Days
Continuous		  
16-Apr-24 09:00 26-Apr-24 17:30 ALTALINK Outage 575s T1 (575s Sundre) corrosive sulphur, doble, oil gauge 10.35 Days
Continuous		  
16-Apr-24 10:00 18-Apr-24 17:30 ALTALINK Outage 39s 252 (39s Bickerdike) breaker maintenance 2.31 Days
Continuous		  
16-Apr-24 10:00 20-Apr-24 17:00 ATCO TE ATCO RTU/SCADA 6502s Empress solar RTU controller configuration update 4.29 Days
Continuous		  
17-Apr-24 07:00 18-Apr-24 17:00 ALTALINK, EPCOR Outage 909L (89s Ellerslie - 665s Dome), 665s D2401 (665s Dome), 665s D2404 (665s Dome), 665s T3 (665s Dome) 909LE P&C maintenance 1.42 Days
Continuous		  
17-Apr-24 09:00 26-Apr-24 15:00 ATCO Outage 7L132 (767s Oyen - 959s Lanfine), 767s 701 (767s Oyen) restring OPGW from structures 10-32 9.25 Days
Continuous		  
17-Apr-24 09:00 18-Apr-24 16:30 ATCO RB 7L702 (137s Sedgewick - 757s Battle River) climbing inspection 7L702 31.5 Hours
Continuous		  
17-Apr-24 09:00 18-Apr-24 16:30 ALTALINK RB 702L (137s Sedgewick - 377s AML Hardisty), 702L (137s Sedgewick - 757s Battle River) climbing inspection 7L702 31.5 Hours
Continuous		  
17-Apr-24 09:30 26-Apr-24 14:30 ATCO Outage 6L09 (767s Oyen - 6L21 tap), 767s 601 (767s Oyen) GOI for stringing 7L132 overtop of 6L09 9.21 Days
Continuous		  
18-Apr-24 07:30 18-Apr-24 17:30 ALTALINK RB 712L (99s North St. Albert - 595s Spruce Grove) Repair woodpecker damage at structure 66. 10 Hours
Daily		  
18-Apr-24 08:00 19-Apr-24 16:00 ENMAX Outage 2GSU-XF-001 (SS-25), 25B240-D135 (SS-25), 25B240-D134 (SS-25), 25MD240-2GSU (SS-25) HV SW maintenance, power factor test and substation washing 1.33 Days
Continuous		  
18-Apr-24 08:00 18-Apr-24 16:00 ENMAX Outage 9.83L (SS-9 - SS-43), 43B138-9.83 (SS-43), 9B138-9.83 (SS-9) power factor test - 9B138-9.83 8 Hours
Continuous		  
18-Apr-24 08:00 18-Apr-24 17:00 ALTALINK TE 523s Protection & Control (523s Bullshead) install and test new circuits 9 Hours
Daily		  
18-Apr-24 08:00 18-Apr-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 131s RTU/SCADA (131s Moon Lake), 283s RTU/SCADA (283s Violet Grove), 235s RTU/SCADA (235s Entwistle) repairs on 131s to 9516R Radio 9 Hours
Daily		  
18-Apr-24 09:00 18-Apr-24 13:00 ALTALINK, ENMAX Outage 42s 693 (42s Sarcee), 693L (42s Sarcee - SS-10), 10B138-693 (SS-10) first trip and PRC5 maintenance 4 Hours
Daily		  
18-Apr-24 09:00 18-Apr-24 13:00 ENMAX, ALTALINK Outage 693L (42s Sarcee - SS-10) Altalink outage 4 Hours
Continuous		  
18-Apr-24 09:00 14-Jun-24 16:00 ATCO TE 716s RTU/SCADA (716s Lloydminster) lloyd sub rebuild is completed in stages and therefore SCADA verifications performed at varying times 57.29 Days
Continuous		  
18-Apr-24 09:00 19-Apr-24 16:30 ATCO TE 780s Protection & Control (780s Lubicon) block 21A and 21B relays for testing and parts replacement (7L61)
 31.5 Hours
Continuous		  
18-Apr-24 10:00 19-Apr-24 16:00 ATCO Outage 7L61 (780s Lubicon - 796s Nipisi), 780s 703 (780s Lubicon), 780s 704 (780s Lubicon), 796s 701 (796s Nipisi) 7L61 RTXP test switch replacements, 703/ 704 maintenance 30 Hours
Continuous		  
18-Apr-24 10:00 18-Apr-24 14:00 ALTALINK Outage 250p 22 (250p Bighorn Plant) maintenance 4 Hours
Daily		  
19-Apr-24 08:00 19-Apr-24 17:00 ATCO RB 7L39 (722s Crystal Lake - 7LA39 tap), 7LA39 (728s Mercer Hill - 7L39 tap), 7L39 (811s Clairmont Lake - 7LA39 tap) connection of 902S mobile substation to 7LA39 at 728S Mercer Hill 9 Hours
Continuous		  
19-Apr-24 08:00 20-Apr-24 18:00 ALTALINK Outage 452L (367s Harry Smith - 434s Stony Plain), 434s 452 (434s Stony Plain) replace crossarms and insulators 1.42 Days
Continuous		  
19-Apr-24 08:00 19-Apr-24 17:00 ALTALINK Outage 860L (44s Bearspaw Plant - 291s Cochrane), 44s 860W (44s Bearspaw Plant), 291s 860 (291s Cochrane) replace insulators at structure 108 9 Hours
Daily		  
19-Apr-24 08:00 19-Apr-24 16:00 ENMAX TE RTU/SCADA (SS-6) SDN network security upgrade 8 Hours
Continuous		  
19-Apr-24 08:00 19-Apr-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 410s RTU/SCADA (410s Josephburg), 452s RTU/SCADA (452s B.F. Goodrich Fort Saskatchewan) upgrade 410s MPLS node 9 Hours
Daily		  
19-Apr-24 08:00 19-Apr-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9008R MPLS node 9 Hours
Daily		  
19-Apr-24 08:30 19-Apr-24 12:00 ATCO RB 7L13 (845s Big Mountain - 7LA13 tap)
7L13 HOP to close J1 at 679s Bear Creek		 3.5 Hours
Continuous		  
19-Apr-24 11:00 19-Apr-24 17:00 ATCO RB 7L76 (786s High Level - 832s Blumenort) lift bottom phase of 144kv for high load move at location 7L76-4 6 Hours
Continuous		  
20-Apr-24 08:00 21-Apr-24 16:00 ENMAX Outage 25B240-D140 (SS-25), 25B240-D134 (SS-25), 25B240-D131 (SS-25) HV SW Maint. SW149, SW145, SW137, SW131. Power Factor Test - 25PT240-Z41. SW131 is difficult to operate when blade is in the jaw 1.33 Days
Continuous		  
20-Apr-24 11:00 20-Apr-24 17:00 ATCO RB 7L76 (786s High Level - 832s Blumenort) lift bottom phase for high load move 6 Hours
Continuous		  
21-Apr-24 07:00 21-Apr-24 18:00 ALTALINK Outage 706L (54s Fort Saskatchewan - 706AL tap) Hardware tighten structure 62. 11 Hours
Daily		  
21-Apr-24 08:00 25-Apr-24 18:00 SUNCOR Outage 29EDD-71 752-4624 (29EDD-71) FB -
29EDD71;29-752-4624 MAINT & TEST;PM 10y
FIREBAG - 450077645		 4.42 Days
Continuous		  
21-Apr-24 08:00 21-Apr-24 17:00 ALTALINK Outage 831L (121s Brooks - 831AL tap), 831L (339s Duchess - 831AL tap) Hardware tighten structures 14, 15 & 18. 9 Hours
Daily		  
22-Apr-24 07:00 26-Apr-24 17:00 EPCOR Outage 72CK12 (987s Clover Bar - Kennedale), K724 (Kennedale), 987s CK725 (987s Clover Bar) disconnect maintenace 4.42 Days
Continuous		  
22-Apr-24 07:00 27-Apr-24 17:00 ALTALINK, EPCOR Outage 909L (310p Sundance - 665s Dome), 665s T2 (665s Dome), 665s D2402 (665s Dome), 665s D2403 (665s Dome), 665s DDS14 (665s Dome), 665s DAB2 (665s Dome) breaker maintenance, P&C maintenance 5.42 Days
Continuous		  
22-Apr-24 07:00 27-Apr-24 17:00 EPCOR Outage 52s T2 (52s East Industrial), 52s E2402 (52s East Industrial) breaker maintenance E2402 (SF6) and TX2 doble 5.42 Days
Continuous		  
22-Apr-24 07:00 22-Apr-24 17:00 EPCOR Outage EP 803s L2401 (EP 803s Lambton) L2401 P&C maintenance 10 Hours
Continuous		  
22-Apr-24 07:00 22-Apr-24 17:00 EPCOR Outage 805s C1 (805s Jasper) replace pole C density switch J2408 10 Hours
Continuous		  
22-Apr-24 07:00 22-Apr-24 17:00 ENMAX RB 11.82L (SS-11 - SS-14) tree trimming 10 Hours
Daily		  
22-Apr-24 07:00 25-Apr-24 17:30 ALTALINK Outage 310p 1852 (310p Sundance) urgent replace failed 310p1852 CT 3.44 Days
Continuous		  
22-Apr-24 07:00 25-Apr-24 18:00 ENMAX Outage 14.3TR (SS-14) grounding deficiency iImprovements 3.46 Days
Continuous		  
22-Apr-24 07:00 26-Apr-24 17:00 EPCOR Outage 330P SST1 (330P Genesee) move from temporary bypass lines to permanent structures 4.42 Days
Continuous		  
22-Apr-24 07:00 26-Apr-24 17:00 EPCOR Outage 330P SST3 (330P Genesee) move from temporary bypass to permanent structures 4.42 Days
Continuous		  
22-Apr-24 08:00 23-Apr-24 17:00 ALTALINK TE 746s Protection & Control (746s Sherwood Park) new T1 relay testing 1.38 Days
Continuous		  
22-Apr-24 08:00 22-Apr-24 17:00 ALTALINK Outage 795L (121s Brooks - 421s Hays), 121s 795X (121s Brooks) tighten dead-end clamp at structure 2 9 Hours
Daily		  
22-Apr-24 08:00 26-Apr-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and migrating and commissioning of T5 (TX18528) protection, tap changer and NE alarms, 535s52 controls, metering, alarms etc 4.38 Days
Continuous		  
22-Apr-24 08:00 26-Apr-24 17:00 ALTALINK TE 283s RTU/SCADA (283s Violet Grove) update RTU settings 4.38 Days
Daily		  
22-Apr-24 08:00 22-Apr-24 16:00 ENMAX Outage 13.82L (SS-13 - SS-22), 13B138-13.82 (SS-13) HV Breaker Maintenance - 13B138-13.82. HV Breaker SF6 Gas Sample - 13B138-13.82 8 Hours
Continuous		  
22-Apr-24 08:00 25-Apr-24 16:30 ALTALINK Outage 508L (67s Stirling - 344s Warner), 344s T1 (344s Warner), 344s T2 (344s Warner) replacing insulators at 508L306 and replacing structures at 508L286 and 508L40 3.35 Days
Continuous		  
22-Apr-24 08:30 22-Apr-24 17:30 ALTALINK Outage 150A1L (180s Cope Creek - 150AL tap), 180s T1 (180s Cope Creek), 180s T2 (180s Cope Creek), 180s 152 (180s Cope Creek), 180s 252 (180s Cope Creek), 180s 189 (180s Cope Creek), 180s 289 (180s Cope Creek) switching training 9 Hours
Daily		  
22-Apr-24 09:00 05-May-24 16:00 ATCO Outage 7L32 (813s Little Smoky - 862s South Bezanson) pole change from test and treat / X arm change 13.29 Days
Continuous		  
22-Apr-24 09:00 23-Apr-24 16:59 ALTALINK Outage 636L (420s Broadmoor - 746s Sherwood Park), 746s T1 (746s Sherwood Park), 746s 636 (746s Sherwood Park), 746s 3 (746s Sherwood Park), 420s 636 (420s Broadmoor) upgrade 746s3 control module, trip testing to 746s636 from 87/T1, test 89/T1 block close, test 89/T1 block 79/AutoRestore, cutover CTs to new B87/138B protection 31.98 Hours
Continuous		  
22-Apr-24 09:00 04-Jun-24 17:00 ATCO TE 755s Protection & Control (755s Cordel) removal of old protection relays 43.33 Days
Continuous		  
22-Apr-24 09:00 10-Jun-24 17:00 ATCO TE 972s Protection & Control (972s Tinchebray), 972s RTU/SCADA (972s Tinchebray) PT work for relay upgrade 49.33 Days
Continuous		  
22-Apr-24 09:00 04-Jun-24 17:00 ATCO TE 972s Protection & Control (972s Tinchebray) removal of old protection relays 43.33 Days
Continuous		  
22-Apr-24 10:00 10-May-24 17:30 ATCO Outage 869s 702T (869s Seal Lake), 869s 702 (869s Seal Lake) qualitrol ITM replacement, class2 major testing 18.31 Days
Continuous		  
22-Apr-24 10:00 10-May-24 17:30 ATCO TE 869s RTU/SCADA (869s Seal Lake), 869s Protection & Control (869s Seal Lake) qualitrol ITM replacement, update
RTU/702T protection		 18.31 Days
Continuous		  
22-Apr-24 10:00 23-Apr-24 16:00 ALTALINK TE 746s RTU/SCADA (746s Sherwood Park), AltaLink Telecom Equipment, 746s Protection & Control (746s Sherwood Park) move fiber to new control building 30 Hours
Continuous		  
22-Apr-24 10:00 03-May-24 16:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) PRC-005 - relay testing
 11.25 Days
Continuous		  
22-Apr-24 10:00 25-Apr-24 16:00 ATCO TE 780s Protection & Control (780s Lubicon) 7L60 RTXP test switch replacements, perform work with breakers in service to keep 7L60 line on 3.25 Days
Continuous		  
22-Apr-24 10:00 25-Apr-24 16:00 ATCO Outage 780s 704 (780s Lubicon) breaker maintenance in conjunction with 7L60 RTXP replacement 3.25 Days
Continuous		  
22-Apr-24 10:00 25-Apr-24 18:00 ALTALINK TE 310p Protection & Control (310p Sundance) change CT ratios and complete element testing for the urgent outage to replace failed 310p1852 CT 3.33 Days
Daily		  
22-Apr-24 11:00 10-Jun-24 17:00 ATCO TE 755s Protection & Control (755s Cordel), 755s RTU/SCADA (755s Cordel) relay upgrade, adding new SCADA points and protection upgrade. 49.25 Days
Continuous		  
22-Apr-24 11:00 22-Apr-24 17:00 ALTALINK TE 48s Protection & Control (48s Pocaterra) minor settings change to change gateway address to fix remote access issues 6 Hours
Daily		  
22-Apr-24 12:30 23-Apr-24 17:30 ALTALINK Outage 310p 352 (310p Sundance) urgent repair breaker JB terminal related to the trip circuit 29 Hours
Continuous		  
22-Apr-24 13:00 24-Apr-24 18:00 ALTALINK Outage 727L (65s High River - 727AL tap), 65s 727N (65s High River) 65s727N breaker maint. repair 65s39 switch 2.21 Days
Continuous		  
22-Apr-24 13:30 02-May-24 17:30 ALTALINK Outage 58s T1 (58s Edson) replace 25 KV/138 KV bushings, doble and LR, re-gasket, repair leaks and CT blocks on T1, main tank/LTC gasket rebuild 10.17 Days
Continuous		  
22-Apr-24 13:30 25-Apr-24 17:30 ALTALINK Outage 522s T1 (522s Cooking Lake), 522s 1252 (522s Cooking Lake) 25 kV breaker replacement (522s259X), 138 kV/25 kV LAs and strain insulators, L4 feeder protection replacement 3.17 Days
Continuous		  
22-Apr-24 14:00 25-Apr-24 17:00 ALTALINK TE 522s RTU/SCADA (522s Cooking Lake) RTU database update 3.13 Days
Daily		  
23-Apr-24 07:00 23-Apr-24 17:00 EPCOR Outage EP 803s L2402 (EP 803s Lambton) L2402 P&C maintenance 10 Hours
Continuous		  
23-Apr-24 07:00 23-Apr-24 17:00 ENMAX RB 11.82L (SS-11 - SS-14) tree trimming 10 Hours
Daily		  
23-Apr-24 07:00 27-Apr-24 17:00 EPCOR Outage 330p 1203A (330p Genesee), 330p 1211 (330p Genesee), 330p 1215 (330p Genesee), 330p 1203 (330p Genesee), 330p 1206 (330p Genesee), 330p 1209 (330p Genesee) carona ball replacement Genesee bus 2 4.42 Days
Continuous		  
23-Apr-24 07:00 25-Apr-24 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) Test Armed, Runback, DTT Signals to Suncor from RAS-A, RAS-B. Relays are not fully commissioned. 2.42 Days
Continuous		  
23-Apr-24 08:00 23-Apr-24 16:00 ENMAX Outage 3.84L (SS-3 - SS-13), 13B138-3.84 (SS-13), 3B138-3.84 (SS-3) HV breaker maintenance - 13B138-3.84 8 Hours
Continuous		  
23-Apr-24 08:00 24-Apr-24 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) Suncor Request
HV Logic is looking to local checks with ATCO for OLRAS from 29PJ-1008.
ATCO be needed for OLRAS testing to simulate mirrored bits from ATCO Thickwood Hills to Suncor.		 1.38 Days
Continuous		  
23-Apr-24 08:00 23-Apr-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 305s Protection & Control (305s Acheson), 367s Protection & Control (367s Harry Smith) repair and upgrade 305s 9393R radio 9 Hours
Daily		  
23-Apr-24 08:00 30-Apr-24 16:00 Syncrude Outage Syncrude Plant 30-2 30-2PTR72-A1 (UE-1 Syncrude Plant 30-2), Syncrude Plant 30-2 30-2PTR72-A2 (UE-1 Syncrude Plant 30-2), Syncrude Plant 30-2 72kV A Bus (UE-1 Syncrude Plant 30-2), UE-1 1501 (UE-1 Syncrude Plant 30-2), UE-1 72-11 (UE-1 Syncrude Plant 30-2), UE-1 72-01 (UE-1 Syncrude Plant 30-2), UE-1 72-02 (UE-1 Syncrude Plant 30-2), UE-1 72-03 (UE-1 Syncrude Plant 30-2), UE-1 72-04 (UE-1 Syncrude Plant 30-2), UE-1 72-14 (UE-1 Syncrude Plant 30-2), 1014 (Syncrude Mildred Lake), 1015 (Syncrude Mildred Lake), 1016 (Syncrude Mildred Lake), UE-1 72-15 (UE-1 Syncrude Plant 30-2), UE-1 72-09 (UE-1 Syncrude Plant 30-2) SCL - Isolate 72kV bus in UE-1 Substation 7.33 Days
Continuous		  
23-Apr-24 08:00 23-Apr-24 18:00 ALTALINK TE AltaLink Telecom Equipment 9244R and 9244R work 10 Hours
Daily		  
23-Apr-24 08:00 25-Apr-24 17:00 ATCO RB 7L65 (709s Vegreville - 7LA65 tap), 7L65 (710s Vermilion - 7LA65 tap), 7LA65 (708s Grizzly Bear - 7L65 tap) marker cone replacement 2.38 Days
Daily		  
23-Apr-24 08:30 23-Apr-24 13:30 ALTALINK Outage 463L (15s Fort Macleod - 463AL tap), 15s 463 (15s Fort Macleod) 15s463 PRC 5 - first trip and maintenance 5 Hours
Daily		  
23-Apr-24 08:30 23-Apr-24 17:30 ALTALINK Outage 89s 1852 (89s Ellerslie) urgent repair - enabling flash over protection on the 500 kV breaker failure relays 9 Hours
Daily		  
23-Apr-24 08:30 23-Apr-24 17:30 ALTALINK Outage 763L (28s West Brooks - 763AL tap), 28s 763X (28s West Brooks) urgent - perform IR scan of the line due to recent splice failures 9 Hours
Daily		  
23-Apr-24 09:00 23-Apr-24 17:00 ALTALINK IO 48s T1 (48s Pocaterra), 48s T2 (48s Pocaterra) Techs will be replacing the following revenue meters: T1_1, T2,Loss of analogs to T1/T2 while meters are replaced 8 Hours
Daily		  
23-Apr-24 10:00 23-Apr-24 15:00 ATCO RB 9L80 (755s Cordel - 757s Battle River) annual climbing inspection 9L80 5 Hours
Continuous		  
23-Apr-24 10:00 23-Apr-24 15:00 ATCO RB 9L79 (755s Cordel - 757s Battle River) annual climbing inspection 9L79 5 Hours
Continuous		  
23-Apr-24 11:00 02-May-24 17:00 ATCO Outage 755s 904 (755s Cordel) HalkirkII project -
9L16 protection upgrade including modification of wiring from 904CT to 87L-21A/9L16 and RAS-A/9L16 protection relays		 9.25 Days
Continuous		  
23-Apr-24 17:00 27-Apr-24 07:59 ALTALINK Outage 746s T1 (746s Sherwood Park) T1 replacement continuation 3.62 Days
Continuous		  
24-Apr-24 00:00 24-Apr-24 16:30 ALTALINK RB 834L (320p Keephills - 384s Keystone) safety requirement, proximity to 809L 16.5 Hours
Daily		  
24-Apr-24 07:00 24-Apr-24 17:00 ALTALINK, EPCOR Outage EP 803s L2403 (EP 803s Lambton) L2403 P&C maintenance 10 Hours
Continuous		  
24-Apr-24 07:00 24-Apr-24 17:00 ENMAX RB 11.82L (SS-11 - SS-14) tree trimming 10 Hours
Daily		  
24-Apr-24 07:30 25-Apr-24 16:30 ENMAX, ALTALINK Outage 50L (44s Bearspaw Plant - SS-21), 60s50 (SS-21), 44s 50X (44s Bearspaw Plant) replace leaking east phase CT at 60s50 1.38 Days
Continuous		  
24-Apr-24 07:30 25-Apr-24 18:00 ALTALINK Outage 993s T2 (993s Abee) T2 doble, SFRA and tapchanger maintenance 1.44 Days
Continuous		  
24-Apr-24 07:30 25-Apr-24 16:30 ENMAX, ALTALINK IO 50L (44s Bearspaw Plant - SS-21) Altalink outage, replace the leaking East Phase CT 60s50. Reclose block on 50L required 1.38 Days
Continuous		  
24-Apr-24 07:30 25-Apr-24 16:30 ENMAX, ALTALINK TE 60s50 (SS-21) isolation of the 60s 21/L50 A and B protections - demolition, reconnect and commissioning of CT circuits from 60s50 outage 1.38 Days
Continuous		  
24-Apr-24 07:30 24-Apr-24 17:30 ALTALINK Outage 763L (158s Vauxhall - 763AL tap), 158s 763N (158s Vauxhall) Urgent outage to perform IR Scan of the line due to recent splice failures. Outage required to increase the loading on the line to perform the scan properly. 10 Hours
Daily		  
24-Apr-24 08:00 24-Apr-24 15:00 ATCO RB 9L100 (801s Anderson - 807s Sheerness) HOP required for annual climbing inspection 9L100 7 Hours
Continuous		  
24-Apr-24 08:00 24-Apr-24 15:00 ATCO RB 9L99 (801s Anderson - 807s Sheerness) HOP required for annual climbing inspection of 9L99 7 Hours
Continuous		  
24-Apr-24 08:00 24-Apr-24 16:00 ENMAX Outage 16.60L (SS-16 - SS-34), 16B69-16.60 (SS-16), 34B69-16.60 (SS-34) 16.63L Line protection upgrade. Outage required to modifiy wiring to remove the old 16.63L panel 8 Hours
Continuous		  
24-Apr-24 08:00 24-Apr-24 12:00 ALTALINK TE AltaLink Telecom Equipment, 405s Protection & Control (405s Waupisoo) upgrade 9900R MPLS node 4 Hours
Daily		  
24-Apr-24 08:15 24-Apr-24 16:45 ALTALINK, EPCOR Outage 809L (320p Keephills - 510s Sunnybrook), 320p 809X (320p Keephills) Urgent repair; repair corroded anchor preform on 809L69 8.5 Hours
Daily		  
24-Apr-24 08:30 24-Apr-24 17:30 ALTALINK Outage 89s 1752 (89s Ellerslie) Urgent Repair; Flash Over protection is being enabled on the 500kV breaker failure relays 9 Hours
Daily		  
24-Apr-24 08:30 25-Apr-24 16:00 ATCO TE 802s Protection & Control (802s Michichi Creek), 802s RTU/SCADA (802s Michichi Creek) update 802S_703T_87TB_51HV-51LV_SEL487E relay 31.5 Hours
Continuous		  
24-Apr-24 09:00 24-Apr-24 15:00 ALTALINK TE 48s RTU/SCADA (48s Pocaterra) replace HMI with a new SG-4260 SMP 6 Hours
Daily		  
24-Apr-24 09:00 24-Apr-24 11:00 Lethbridge TE Lethbridge ICCP Outage security updates to Rx 1500 at control centre 2 Hours
Continuous		  
24-Apr-24 10:00 24-Apr-24 17:00 ATCO TE ATCO Telecom Equipment low bes firewall install 7 Hours
Continuous		  
24-Apr-24 23:00 25-Apr-24 03:00 ALTALINK Outage 62s 11 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
25-Apr-24 03:00 25-Apr-24 07:00 ALTALINK Outage 62s 12 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
25-Apr-24 07:00 25-Apr-24 17:00 ALTALINK, EPCOR Outage EP 803s L2404 (EP 803s Lambton) P&C maintenance 10 Hours
Continuous		  
25-Apr-24 07:00 25-Apr-24 17:00 ENMAX RB 11.81L (SS-11 - SS-13) tree trimming 10 Hours
Daily		  
25-Apr-24 07:15 25-Apr-24 17:45 ALTALINK Outage 522s 138kV Bus 1 (522s Cooking Lake), 874L (45s Bretona - 522s Cooking Lake), 522s T1 (522s Cooking Lake), 522s 874 (522s Cooking Lake), 522s 1252 (522s Cooking Lake), 45s 874 (45s Bretona) strain glass insulator replacement 10.5 Hours
Daily		  
25-Apr-24 08:00 06-May-24 16:00 SUNCOR Outage 29PL6-6 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-1 29EDD1s1152 (29EDD-1 Millennium), 29EDD-2 29PT-2 (29EDD-2 Tar Island) breaker test, relay upgrades 11.33 Days
Continuous		  
25-Apr-24 08:00 25-Apr-24 17:00 ALTALINK Outage 162L (229s Glenwood - 415s Drywood), 415s 146E (415s Drywood) replace insulators and repair OHSW bond 9 Hours
Daily		  
25-Apr-24 08:00 25-Apr-24 17:00 ALTALINK Outage 759L (87s Gaetz - 276s Prentiss), 276s 759W (276s Prentiss) upgrade bonding on entire pole at structure 4 9 Hours
Daily		  
25-Apr-24 08:00 25-Apr-24 17:00 ALTALINK RB 793L (87s Gaetz - 535s Joffre) upgrade bonding on entire pole at structure 4 on 759L, shared tower 9 Hours
Daily		  
25-Apr-24 08:00 25-Apr-24 16:00 ENMAX TE Protection & Control (SS-16) 16sub 69 kV bus differential protection -16.63L line protection upgrade 8 Hours
Daily		  
25-Apr-24 08:00 25-Apr-24 12:00 ALTALINK TE AltaLink Telecom Equipment, 56s RTU/SCADA (56s Boyle) upgrade 9056R MPLS node 4 Hours
Daily		  
25-Apr-24 10:00 25-Apr-24 16:00 ATCO Outage 951s 903 (951s Thickwood Hills) PRC-005 trip coil testing 6 Hours
Continuous		  
25-Apr-24 10:00 26-Apr-24 17:00 ATCO, CNRL TE 838s RTU/SCADA (838s Horizon Mining), 838s Protection & Control (838s Horizon Mining) annual PM - RTU, HMI, relays 31 Hours
Continuous		  
25-Apr-24 11:00 25-Apr-24 12:00 ATCO TE ATCO Telecom Equipment move RASEE022 to RASCP052
Ap		 60 Mins
Continuous		  
25-Apr-24 12:00 26-Apr-24 17:00 ALTALINK Outage 746s 700N (746s Sherwood Park), 700L (746s Sherwood Park - 746L tap) test trip 746s700N from new protection, cutover CTs to new protection 29 Hours
Continuous		  
25-Apr-24 12:00 25-Apr-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 353s RTU/SCADA (353s Plamondon) upgrade 9353R MPLS node 5 Hours
Daily		  
26-Apr-24 07:00 10-May-24 17:00 EPCOR Outage 805s T4 (805s Jasper), EP 805s J2405 (EP 805s Jasper), EP 805s J2406 (EP 805s Jasper) tap changer rebuild, doble, disconnect maintenance 14.42 Days
Continuous		  
26-Apr-24 07:00 26-Apr-24 18:00 ALTALINK Outage 890L (58s Edson - 207s Pinedale), 58s 890 (58s Edson), 207s 890 (207s Pinedale) replace structure 101 11 Hours
Daily		  
26-Apr-24 07:00 26-Apr-24 17:00 EPCOR Outage EP 803s L2405 (EP 803s Lambton) L2405 P&C maintenance 10 Hours
Continuous		  
26-Apr-24 07:00 26-Apr-24 17:00 ENMAX RB 40.81L (SS-40 - SS-41) tree trimming 10 Hours
Daily		  
26-Apr-24 07:00 26-Apr-24 17:00 ENMAX, ALTALINK RB 936L (5s East Calgary - 102s Langdon) spring transmission line washing 10 Hours
Continuous		  
26-Apr-24 07:00 26-Apr-24 17:00 ENMAX, ALTALINK RB 937L (5s East Calgary - 102s Langdon) spring transmission line washing 10 Hours
Continuous		  
26-Apr-24 07:00 26-Apr-24 17:00 ENMAX RB 11.82L (SS-11 - SS-14) spring transmission line washing 10 Hours
Continuous		  
26-Apr-24 07:00 26-Apr-24 17:00 ENMAX RB 24.81L (SS-24 - SS-31) spring transmission line washing 10 Hours
Continuous		  
26-Apr-24 08:00 06-May-24 16:00 SUNCOR Outage 29PL9-5 (29EDD-1 Millennium - 29EDD-34), 29EDD-34 29-952-122 (29EDD-34), 29EDD-34 29-952-121 (29EDD-34), 29EDD-34 29PS-62 (29EDD-34), 29EDD-1 29PS-71 (29EDD-1 Millennium), 29EDD-1 952-103 (29EDD-1 Millennium), 29EDD-1 952-102 (29EDD-1 Millennium) BP - maintenance 10.33 Days
Continuous		  
26-Apr-24 08:00 26-Apr-24 16:00 ENMAX Outage 3.84L (SS-3 - SS-13), 3B138-3.84 (SS-3) HV Breaker Maintenance - 3B138-3.84. HV Breaker SF6 Gas Sample - 3B138-3.84 8 Hours
Continuous		  
26-Apr-24 08:00 26-Apr-24 12:00 ENMAX Outage 33.1TR (SS-33), 33.83L (SS-33 - SS-41) Spring Substation Washing. Check reversing switch. 4 Hours
Continuous		  
26-Apr-24 08:00 05-May-24 16:00 Syncrude Outage Syncrude Plant 30-2 30-2PTR72-3 (UE-1 Syncrude Plant 30-2), UE-1 1509 (UE-1 Syncrude Plant 30-2), UE-1 72-09 (UE-1 Syncrude Plant 30-2) SCL- perform maintenance and repairs 9.33 Days
Continuous		  
26-Apr-24 08:00 05-May-24 16:00 Syncrude Outage UE-1 1502 (UE-1 Syncrude Plant 30-2), UE-1 1521 (UE-1 Syncrude Plant 30-2), UE-1 1522 (UE-1 Syncrude Plant 30-2) maintenance 9.33 Days
Continuous		  
26-Apr-24 12:00 26-Apr-24 16:00 ENMAX Outage 33.2TR (SS-33), 33.84L (SS-33 - SS-43) Spring Substation Washing. Check reversing switch. 4 Hours
Continuous		  

Prepared On:   2024-04-17   15:05:13

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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