Alberta Electric System Operator
System Co-ordination Plan
2025-11-27 to 2025-12-05
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
26-Jul-24 10:00 31-Jul-26 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency removal to replace failed 502R @834S 735.25 Days
Continuous
 
23-Aug-24 13:45 30-Jun-26 14:29 ALTALINK Outage 157s C1 (157s Lac La Biche) forced outage 676.03 Days
Continuous
 
11-Mar-25 00:00 31-Dec-25 16:00 ALTALINK Outage 377s 473C (377s AML Hardisty) forced outage 295.71 Days
Continuous
 
18-Mar-25 14:00 17-Mar-26 17:30 ALTALINK Outage 217s C1 (217s North Red Deer) cap. bank unavailable and cannot be energized due to Koncar CTs being present 364.15 Days
Daily
 
20-Mar-25 08:00 20-Mar-26 17:00 ALTALINK Outage 256s C1 (256s Harmattan) forced outage 365.38 Days
Continuous
 
31-Mar-25 07:00 19-Dec-25 17:00 EPCOR TE Protection & Control (Woodcroft) Woodcroft: protection blocking for merging unit and protection upgrade. 263.46 Days
Continuous
 
14-May-25 08:00 10-Feb-26 16:00 ENMAX TE Protection & Control (SS-32) 32sub 138kV autoswitching protection outage 272.38 Days
Continuous
 
13-Jun-25 17:00 11-Feb-26 17:00 EPCOR Outage T3 (Rossdale) Rossdale - TX3 LCR 243.04 Days
Continuous
 
16-Jul-25 07:00 01-Dec-25 23:55 NWE Outage 2366 (NWE Marias) install new equipment at Marias 138.75 Days
Continuous
AB-MATL
21-Jul-25 09:00 19-Jan-26 17:00 ATCO TE 732s Protection & Control (732s Mitsue) the breaker fail protection will be disabled during the project, as we migrate from the existing to the new protection 182.38 Days
Continuous
 
21-Jul-25 09:00 23-Jan-26 16:30 ATCO TE 732s RTU/SCADA (732s Mitsue) existing RTU system being replaced with new SMP system 186.35 Days
Continuous
 
22-Jul-25 08:30 31-Dec-25 16:30 ALTALINK Outage 263s C1 (263s Strachan) forced outage 162.38 Days
Continuous
 
25-Jul-25 17:01 20-Feb-26 17:00 EPCOR Outage T2 (EP Riverview) bushing test failure (found during OE110184) 210.04 Days
Continuous
 
20-Aug-25 17:00 17-Dec-25 17:00 ALTALINK Outage 1075L (28s West Brooks - 132s Ware Junction) restoration from real time storm 119.04 Days
Continuous
 
25-Aug-25 08:00 03-Apr-26 16:00 ENMAX Outage 32.1TR (SS-32) slip over CT and new power cables installation and P&C works 221.33 Days
Continuous
 
25-Aug-25 09:00 10-Dec-25 17:00 ATCO TE 710s Protection & Control (710s Vermilion) protection and hardwired IO on-site will need to be cut-over to the new SCADA system and tested 107.38 Days
Continuous
 
02-Sep-25 08:00 28-Feb-26 16:00 ENMAX Outage 38.1C (SS-38) capacitor bank switcher replacement 179.38 Days
Continuous
 
05-Sep-25 08:00 28-Nov-25 16:00 ENMAX Outage 1.83L (SS-1 - SS-8) 1 sub Transmission line cut over. Line will terminate at new 1 sub upon return to service. 84.38 Days
Continuous
 
05-Sep-25 08:00 28-Nov-25 16:00 ENMAX Outage 1.85L (SS-1 - SS-8) 1 sub transmission line cut over. line will terminate at new 1 sub upon return to service. 84.38 Days
Continuous
 
12-Sep-25 08:00 06-Mar-26 16:00 ENMAX Outage 33.1TR (SS-33) tap changer refurbishments. soak test required 175.38 Days
Continuous
 
15-Oct-25 12:00 02-Dec-25 17:00 EPCOR Outage 330P 12TC1 (330p Genesee), 330p 805 (330p Genesee) Genesee: 12TC1 emergency bushing investigation 48.25 Days
Continuous
 
20-Oct-25 07:00 28-Nov-25 17:00 ALTALINK, EPCOR RB 1044L (EP 805s Jasper - 816s Petrolia) working in proximity (MN872 manhole replacement) 39.46 Days
Continuous
 
01-Nov-25 12:00 01-Feb-26 18:00 ALTALINK Outage AML 511s ACF12 (AML 511s Crossings) forced outage 92.29 Days
Continuous
 
03-Nov-25 07:00 19-Dec-25 17:00 EPCOR TE 987s Protection & Control (987s Clover Bar) protection blocking for P&C maintenance at Cloverbar 46.42 Days
Continuous
 
04-Nov-25 10:30 10-Dec-25 15:00 ATCO TE 710s Protection & Control (710s Vermilion) 86-50BF-1/700BS1 secondary protection block common lockout so we can tie in new BF trips from 7L117 A&B, 7L129 A&B, 7L130 A&B 36.19 Days
Continuous
 
04-Nov-25 10:30 10-Dec-25 15:00 ATCO TE 710s Protection & Control (710s Vermilion) 87BA/700BS1, secondary protection, blocked for 7L129 primary injection as well as 7L117 primary injection as well as local SCADA cutover testing 36.19 Days
Continuous
 
12-Nov-25 08:00 28-Nov-25 16:00 ENMAX Outage 20.1TR (SS-20) maintenance 16.33 Days
Continuous
 
14-Nov-25 07:00 03-Dec-25 18:00 ALTALINK RB 931L (28s West Brooks - 132s Ware Junction) required for 1053L GOI due to proximity 19.46 Days
Daily
 
14-Nov-25 09:30 03-Dec-25 18:00 ALTALINK Outage 1053L (132s Ware Junction - 324s Cassils) install ~6.8 km of new conductor for new 1075L on open side of tower opposite to 1053L on structures 19.35 Days
Continuous
 
17-Nov-25 07:00 11-Dec-25 17:00 EPCOR TE 814s Protection & Control (814s Bellamy) protection blocking, DFR commissioning 24.42 Days
Continuous
 
17-Nov-25 07:00 28-Nov-25 17:00 EPCOR TE 72DS26 (665s Dome - Strathcona) protection blocking for 72DS26 line protection A upgrade 11.42 Days
Continuous
 
17-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE 397s RTU/SCADA (397s Benbow) update configuration for L2 protection upgrade, AIS 1159 additions, and 43M addition 10.38 Days
Daily
 
17-Nov-25 09:00 27-Nov-25 18:00 ALTALINK Outage 799L (235s Entwistle - 443s South Mayerthorpe), 235s 799N (235s Entwistle) 799L rebuild (Str 830-858) 10.38 Days
Continuous
 
17-Nov-25 09:00 28-Nov-25 17:30 ALTALINK TE 177s RTU/SCADA (177s West Cascade) SCADA cutover 11.35 Days
Daily
 
17-Nov-25 12:00 28-Nov-25 18:30 ALTALINK Outage 29s T2 (29s Cascade) SCADA cutovers from T29s RTU to 177s RTU 11.27 Days
Continuous
 
17-Nov-25 12:30 27-Nov-25 17:30 ALTALINK TE 62s RTU/SCADA (62s Brazeau Plant) RTU database updates 10.21 Days
Daily
 
17-Nov-25 13:00 28-Nov-25 17:30 ALTALINK TE 562s RTU/SCADA (562s Cypress) ACC Visbility project 11.19 Days
Daily
 
18-Nov-25 13:00 28-Nov-25 17:00 BCH Outage T4 (BCH Natal) natal substation replacement and etm install 10.17 Days
Continuous
AB-BC
21-Nov-25 08:00 20-Dec-25 16:00 ENMAX Outage 38.3TR (SS-38) 38.3TR secondary cable replacement 29.33 Days
Continuous
 
22-Nov-25 08:00 03-Dec-25 16:00 ATCO Outage 7L129 (710s Vermilion - 7LA129 tap), 710s 704 (710s Vermilion) 7L129 A and B line protection upgrade 11.33 Days
Continuous
 
22-Nov-25 08:00 03-Dec-25 16:00 ATCO TE 710s Protection & Control (710s Vermilion) 7L129 relays being replaced 11.33 Days
Continuous
 
22-Nov-25 09:00 03-Dec-25 17:00 ATCO TE 710s Protection & Control (710s Vermilion) protection work 11.33 Days
Continuous
 
23-Nov-25 08:00 29-Nov-25 16:00 Syncrude Outage AL-2 (Aurora - D05 Syncrude), 222 (Aurora), 223 (Aurora), D05 514 (D05), D05 511 (D05), D05 512 (D05), 222A (Aurora), 222B (Aurora), 223A (Aurora), 223B (Aurora), 89-225 (Aurora), D05 511A (D05), D05 511B (D05), D05 512A (D05), D05 512B (D05) complete D05 substation zone 4 260kV PM 6.33 Days
Continuous
 
23-Nov-25 16:01 09-Dec-25 09:00 ALTALINK Outage 864L (397s Benbow - 864AL tap), 397s 864W (397s Benbow) close 864CL open point 'AA', open Point 'BB', open point 'CC' 15.71 Days
Continuous
 
24-Nov-25 07:00 30-Nov-25 17:00 EPCOR Outage EP 803s T3 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton), 72LH8 (EP 803s Lambton - EP Hardisty), 72LS24 (EP 803s Lambton - Strathcona) LDS11 and LDS12 LCR 6.42 Days
Continuous
 
24-Nov-25 07:00 05-Dec-25 17:00 EPCOR Outage 72NW15 (Namao - Woodcroft), W723 (Woodcroft), N726 (Namao) NW15: line protection upgrade cutovers 11.42 Days
Continuous
 
24-Nov-25 07:00 28-Nov-25 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 CT LCR 4.42 Days
Continuous
 
24-Nov-25 07:00 02-Dec-25 12:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 10.1TR (SS-10), 10B138-832 (SS-10), 10MD138-10.1TR (SS-10) 10.1TR 'S' protection replacement, trip test 10B138-832L, and protection operation 10MD138-10.1TR 8.21 Days
Continuous
 
24-Nov-25 07:00 11-Dec-25 17:00 ENMAX TE Protection & Control (SS-10) 10 sub 138KV bus diff protection outage, 10.1TR and 10.2TR 'S' protection replacement 17.42 Days
Daily
 
24-Nov-25 07:00 11-Dec-25 17:00 ENMAX TE Protection & Control (SS-10) 10PT138-Z31 secondary outage, 10.1TR and 10.2TR 'S' protection replacement 17.42 Days
Daily
 
24-Nov-25 07:00 11-Dec-25 17:00 ENMAX TE Protection & Control (SS-10) 10sub auto switching scheme outage, 10.1TR and 10.2TR 'S' protection replacement 17.42 Days
Daily
 
24-Nov-25 07:00 02-Dec-25 12:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) 10.1TR 'S' protection replacement, trip test 10B138-832L, protection operation 10MD138-10.1TR 8.21 Days
Daily
 
24-Nov-25 07:00 30-Nov-25 18:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) facilitate work adjacent to line for CETO project 6.46 Days
Continuous
 
24-Nov-25 07:00 28-Nov-25 17:00 EPCOR TE Protection & Control (Strathcona) DS26 line protection "A" upgrade, and cutover protection on to the MPLS 4.42 Days
Continuous
 
24-Nov-25 07:30 04-Dec-25 17:30 ATCO, ALTALINK RB 1036L (356s Milo - 554s Travers) close proximity on 1005L (str 88-228) 10.42 Days
Daily
 
24-Nov-25 07:30 04-Dec-25 17:30 ALTALINK RB 1041L (370s North Lethbridge - 554s Travers) close proximity on 1005L (str 88-228) 10.42 Days
Daily
 
24-Nov-25 08:00 05-Dec-25 21:00 SUNCOR TE 29EDD-94 29-952-9707 (29EDD-94 Voyageur), 29EDD-94 29-952-9708 (29EDD-94 Voyageur), 29EDD-94 29-952-9709 (29EDD-94 Voyageur), 29EDD-94 29-952-9710 (29EDD-94 Voyageur), 29EDD-94 29-952-9711 (29EDD-94 Voyageur), 29EDD-94 29-952-9712 (29EDD-94 Voyageur) perform rolling regulatory GE C60 firmware 8.6 updates on the following breakers at 29EDD-94 - 952-9707/9708/9709/9712/9711/9710 11.54 Days
Continuous
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 142s RTU/SCADA (142s Magcan) MPLS firmware upgrade to be completed remotely and MPLS router 7705hm to be rebooted during the upgrade 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 392s RTU/SCADA (392s Black Diamond) MPLS firmware upgrade to be completed remotely and MPLS router 7705hm to be rebooted during the upgrade 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 525s RTU/SCADA (525s Carseland) MPLS firmware upgrade 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 284s RTU/SCADA (284s Nose Creek) MPLS firmware upgrade to be completed remotely and MPLS router 7705hm to be rebooted during the upgrade, PSLAN and Firewall will be done during the outage 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 428s RTU/SCADA (428s Namaka) upgrade MPLS firmware 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment MPLS firmware upgrade to be completed remotely and MPLS router 7705hm to be rebooted during the upgrade, PSLAN and firewall will be down during the outage 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 512s RTU/SCADA (512s Hartell) MPLS firmware upgrade 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE 337s RTU/SCADA (337s Canada Liquidair), AltaLink Telecom Equipment update MPLS firmware 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 522s RTU/SCADA (522s Cooking Lake) update MPLS firmware 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 191s RTU/SCADA (191s N.W. Cardiff) update MPLS firmware 3.38 Days
Daily
 
24-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 99s RTU/SCADA (99s North St. Albert) update MPLS firmware 3.38 Days
Daily
 
24-Nov-25 09:00 08-Dec-25 17:30 ATCO Outage 2075s ACF21 (2075s Newell), 2075s 902T (2075s Newell), 2075S 930 (2075s Newell) valve cooling skid modifications 14.35 Days
Continuous
 
24-Nov-25 11:00 28-Nov-25 11:00 ALTALINK Outage 606L (184s Petro-Canada Edmonton - 185s Bretville), 184s 606 (184s Petro-Canada Edmonton) replace koncar CTs associated with 184s606 4 Days
Continuous
 
24-Nov-25 11:00 28-Nov-25 17:00 ALTALINK TE 58s RTU/SCADA (58s Edson) RTU database updates 4.25 Days
Daily
 
24-Nov-25 11:00 28-Nov-25 17:00 ALTALINK TE 207s RTU/SCADA (207s Pinedale) RTU database updates 4.25 Days
Daily
 
24-Nov-25 11:00 28-Nov-25 17:00 ALTALINK, CascadeP TE 1047s RTU/SCADA (1047s Whisky Jack) RTU database updates 4.25 Days
Daily
 
24-Nov-25 11:30 27-Nov-25 17:00 ALTALINK TE 42s Protection & Control (42s Sarcee) protections required to isolate CTs associated with 42s50 3.23 Days
Daily
 
24-Nov-25 12:00 05-Dec-25 08:00 ALTALINK, SHELL Outage 409s T3 (409s Shell Scotford), 409s 1252 (409s Shell Scotford) remove trips from 409s1252, Polaris new breaker 52-84D2 install 10.83 Days
Daily
 
24-Nov-25 13:00 27-Nov-25 15:00 ALTALINK TE 102s Protection & Control (102s Langdon) removing relays one at a time to replace failing DSP cards 3.08 Days
Daily
 
24-Nov-25 13:00 27-Nov-25 15:00 ALTALINK TE 520s Protection & Control (520s Bennett) replace failing DSP cards on B500T1B, B87B/500T1B, URB30 3.08 Days
Daily
 
24-Nov-25 13:30 27-Nov-25 16:30 ALTALINK Outage 42s 80 (42s Sarcee) CT replacement 3.13 Days
Continuous
 
24-Nov-25 14:00 27-Nov-25 13:00 ATCO Outage 7L129 (710s Vermilion - 7LA129 tap), 710s 704 (710s Vermilion) replace 7L129 structure's 557 and 558 2.96 Days
Continuous
 
24-Nov-25 18:01 04-Dec-25 08:30 ALTALINK Outage 1005L (120s Picture Butte - 1005AL tap) completing maintenance on 1005L (STR 88-228) 9.6 Days
Continuous
 
25-Nov-25 07:00 29-Nov-25 17:00 EPCOR Outage 814s T1 (814s Bellamy), BR721 (Rossdale), 814s B2401 (814s Bellamy), 814s B2407 (814s Bellamy), 814s BAB1 (814s Bellamy) metering upgrade cutovers 4.42 Days
Continuous
 
25-Nov-25 07:00 07-Dec-25 18:00 ALTALINK Outage 759L (87s Gaetz - 276s Prentiss), 87s 759E (87s Gaetz), 276s 759W (276s Prentiss), 87s 552 (87s Gaetz), 87s 652 (87s Gaetz) salvage the old structure 28-30, set new structure and re-string 12.46 Days
Continuous
 
25-Nov-25 07:00 07-Dec-25 17:30 ALTALINK RB 793L (87s Gaetz - 535s Joffre) working within close proximity on 759L 12.44 Days
Daily
 
25-Nov-25 08:00 27-Nov-25 17:00 ATCO TE ATCO Telecom Equipment, 951s RTU/SCADA (951s Thickwood Hills) card maintenance 2.38 Days
Continuous
 
25-Nov-25 08:00 27-Nov-25 17:00 ATCO RB 7L86 (822s Wolf Lake - 1200s Foster Creek) L-G clearance mitigation pole changes 2.38 Days
Continuous
 
25-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE 405s Protection & Control (405s Waupisoo) standard relay maintenance 2.38 Days
Daily
 
25-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) initial energization 1.1TR 3.33 Days
Continuous
 
25-Nov-25 09:30 27-Nov-25 16:30 ATCO TE 795s Protection & Control (795s Zama) 795s settings update 2.29 Days
Continuous
 
25-Nov-25 10:00 27-Nov-25 16:00 ATCO TE ATCO Telecom Equipment, 731s Protection & Control (731s Elmworth), 731s RTU/SCADA (731s Elmworth) installation of new steel mono pole 2.25 Days
Continuous
 
25-Nov-25 17:46 05-Dec-25 18:00 ATCO Outage 876s 901T (876s Brintnell) forced outage oil leaking 10.01 Days
Continuous
 
26-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) Initial energization 1.2TR 2.33 Days
Continuous
 
26-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) initial energization 1.3TR 2.33 Days
Continuous
 
26-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) initial energization 1.4TR 2.33 Days
Continuous
 
26-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) initial energization new 1 sub diameter Q01, Q02, Q03, Q04 Z32 Bus 138kV, Z31 Bus 138kV 2.33 Days
Continuous
 
26-Nov-25 09:00 28-Nov-25 16:00 ATCO Outage 13L50L2 (2029s Heathfield - 2075s Newell) repair Shield wire that has broken strands
2.29 Days
Continuous
 
26-Nov-25 09:00 27-Nov-25 17:00 ATCO TE ATCO Telecom Equipment, 731s RTU/SCADA (731s Elmworth) low bes firewall install 1.33 Days
Continuous
 
26-Nov-25 23:00 27-Nov-25 03:00 ALTALINK Outage 62s T1 (62s Brazeau Plant) maintenance 4 Hours
Continuous
 
27-Nov-25 03:00 27-Nov-25 07:00 ALTALINK Outage 62s T2 (62s Brazeau Plant) maintenance 4 Hours
Daily
 
27-Nov-25 08:00 27-Nov-25 17:00 ATCO, ALTALINK, SHELL TE ATCO Telecom Equipment, 402s RTU/SCADA (402s Scotford Expansion 1) Scotford (AUS) S-Telecom
LOW BES firewall install
9 Hours
Continuous
 
27-Nov-25 08:00 27-Nov-25 11:00 ALTALINK Outage 409s 20 (409s Shell Scotford) remove trips from 409s20 3 Hours
Daily
 
27-Nov-25 08:00 27-Nov-25 15:30 ALTALINK Outage 790L (432s Carvel - 790AL tap), 432s 790 (432s Carvel) replace failing tank heater 7.5 Hours
Daily
 
27-Nov-25 08:00 27-Nov-25 17:00 ATCO TE 710s 703T (710s Vermilion) SCADA cutover of the 703T tap changer and will need to tap up and down the transformer to check controls and position 9 Hours
Continuous
 
27-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) initial energization new 1 sub 8kV AIS J bus, K bus, transfer buses. Transfer J bus to 1.1TR 1.33 Days
Continuous
 
27-Nov-25 08:00 28-Nov-25 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move 7L46 str 158 1.33 Days
Continuous
 
27-Nov-25 08:00 28-Nov-25 16:00 ATCO RB 7L45 (798s Bridge Creek - 845s Big Mountain), 7L45 (798s Bridge Creek - 813s Little Smoky) high load move 7L45 str 158 1.33 Days
Continuous
 
27-Nov-25 08:00 27-Nov-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 255s RTU/SCADA (255s Vulcan) MPLS firmware upgrade 9 Hours
Daily
 
27-Nov-25 08:00 01-Dec-25 18:00 ENMAX Outage 33.84L (SS-33 - SS-43) kls needs to cross the direct buried line with water services for a new high rise 4.42 Days
Continuous
 
27-Nov-25 08:00 27-Nov-25 10:00 ENMAX Outage 2B138-D89 (SS-2) breaker trip coil test - 2B138-D89 2 Hours
Continuous
 
27-Nov-25 08:00 27-Nov-25 16:00 ENMAX TE 21.1TR (SS-21) 21.1TR A protection outage and settings changes 8 Hours
Continuous
 
27-Nov-25 08:30 27-Nov-27 16:30 ALTALINK TE 89s Protection & Control (89s Ellerslie) DSP card replacements on1057L B87/L3 and B240B1 B87/240B1 730.33 Days
Daily
 
27-Nov-25 10:01 27-Nov-25 13:00 ENMAX Outage 2B138-D90 (SS-2) breaker trip coil test - 2B138-D90 2.98 Hours
Continuous
 
27-Nov-25 13:01 27-Nov-25 16:00 ENMAX Outage 2B138-D85 (SS-2) breaker trip coil test - 2B138-D85 2.98 Hours
Continuous
 
28-Nov-25 06:15 28-Nov-25 17:45 ALTALINK, DOW Outage 862L (166s Dow Chemical Fort Saskatchewan - 258s Dow Hydrocarbons), 166s 862N (166s Dow Chemical Fort Saskatchewan) line move to modify the existing alignment between structures 9-10 11.5 Hours
Daily
 
28-Nov-25 08:00 28-Nov-25 17:00 ATCO TE 918s Protection & Control (918s Bauer) block 85-1 (Sel 2506) to send DTT to 710s Vermilion, testing coms for the new 7L129 protection at 710s related to 1-00490432 9 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 16:00 ENMAX Outage 2.82L (SS-2 - SS-5), 5B138-2.82 (SS-5) investigate sagging cables in manhole 8 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) new 1sub 1.84L infeed bus 8 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) new 1sub 1.80L infeed bus 8 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) new 1sub 1.81L infeed bus 8 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 16:00 ENMAX IO Protection & Control (SS-1) new 1sub 1.82L infeed bus 8 Hours
Continuous
 
28-Nov-25 08:00 28-Nov-25 12:00 ENMAX Outage 2B138-D83 (SS-2) breaker trip coil test - 2B138-D83 4 Hours
Continuous
 
28-Nov-25 09:00 28-Nov-25 17:00 ATCO TE ATCO Telecom Equipment, 898s Heart Lake RTU/SCADA Heart Lake_S-telecom- MED BES firewall install - outage to local network & SCADA communications 8 Hours
Continuous
 
28-Nov-25 12:01 28-Nov-25 16:00 ENMAX Outage 2B138-D84 (SS-2) breaker trip coil test - 2B138-D84 3.98 Hours
Continuous
 
28-Nov-25 18:00 01-Dec-25 06:00 ENMAX, ALTALINK Outage 936L (5s East Calgary - 102s Langdon) reconductor between str 15 to 18 on both circuits for line clearance mitigation 2.5 Days
Continuous
 
28-Nov-25 18:00 01-Dec-25 06:00 ENMAX, ALTALINK Outage 937L (5s East Calgary - 102s Langdon), 5s 1552 (5s East Calgary), 5s 1652 (5s East Calgary) working in vicinity of 936L 2.5 Days
Continuous
 
28-Nov-25 18:00 01-Dec-25 06:00 ENMAX, ALTALINK IO 937L (5s East Calgary - 102s Langdon) working in vicinity of 936L 2.5 Days
Continuous
 
28-Nov-25 18:00 01-Dec-25 06:00 ENMAX, ALTALINK IO 936L (5s East Calgary - 102s Langdon) reconductor between str 15 to 18 on both circuits for line clearance mitigation 2.5 Days
Continuous
 
29-Nov-25 07:00 29-Nov-25 17:00 EPCOR TE 805s RTU/SCADA (805s Jasper) substation firewall replacement 10 Hours
Continuous
 
30-Nov-25 08:00 09-Dec-25 16:00 Syncrude, ATCO Outage RL2 (848s Ruth Lake - D05), D05 512 (D05), D05 513 (D05), D05 512B (D05), D05 513B (D05), 848s RL-2D1 (848s Ruth Lake) D05 substation zone 3 260 kV maintenance 9.33 Days
Continuous
 
30-Nov-25 09:00 03-Dec-25 17:00 ATCO Outage 7L23 (732s Mitsue - 7L23 tap), 732s 703 (732s Mitsue), 732s 707 (732s Mitsue), 732s 7L23D4 (732s Mitsue), 796s 702 (796s Nipisi) protection upgrade 3.33 Days
Continuous
 
30-Nov-25 10:00 03-Dec-25 18:00 ENMAX Outage 20.1TR (SS-20) switchgear replacement 3.33 Days
Continuous
 
01-Dec-25 07:00 04-Dec-25 17:00 EPCOR, ALTALINK Outage 240BA2 (629s Argyll Transfer Station - 814s Bellamy), 814s B2401 (814s Bellamy), 814s B2402 (814s Bellamy), 1056L (89s Ellerslie - 629s Argyll Transfer Station) Bellamy: 240BA2 zone metering upgrade cutovers 3.42 Days
Continuous
 
01-Dec-25 07:00 04-Dec-25 17:00 ALTALINK, EPCOR Outage 1056L (89s Ellerslie - 629s Argyll Transfer Station) Bellamy: 240BA2 zone metering upgrade cutovers 3.42 Days
Continuous
 
01-Dec-25 07:00 05-Dec-25 17:00 ALTALINK, EPCOR Outage 921L (71s Lamoureux - 987s Clover Bar), 987s C2404 (987s Clover Bar), 987s C2406 (987s Clover Bar) 921L: Cloverbar relay maintenance 4.42 Days
Continuous
 
01-Dec-25 07:00 07-Dec-25 18:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) facilitate work adjacent to line for CETO project, installing foundations and erecting structures near 7L16-697 6.46 Days
Continuous
 
01-Dec-25 07:00 08-Dec-25 17:30 ATCO TE 951s RTU/SCADA (951s Thickwood Hills) firmware upgrades 7.44 Days
Continuous
 
01-Dec-25 07:00 07-Dec-25 19:00 ATCO RB 7L143 (766s Nevis - 769s Stettler) facilitate work adjacent to line for CETO project 6.5 Days
Continuous
 
01-Dec-25 07:00 05-Dec-25 17:00 EPCOR TE Protection & Control (Meadowlark) protection blocking, relay maintenance 4.42 Days
Continuous
 
01-Dec-25 07:00 05-Dec-25 17:00 EPCOR TE APS# 172 Garneau - Meadowlark Reconfiguration Scheme blocking RAS for MPLS upgrade 4.42 Days
Continuous
 
01-Dec-25 07:00 05-Dec-25 18:00 ENMAX TE Protection & Control (SS-20) 20s auto-switching scheme protection outage - SS-20 switchgear replacement. 4.46 Days
Continuous
 
01-Dec-25 07:00 05-Dec-25 18:00 ENMAX TE Protection & Control (SS-20) 20 sub BMR-82 protection outage - SS-20 switchgear replacement 4.46 Days
Daily
 
01-Dec-25 07:00 05-Dec-25 18:00 ENMAX TE Protection & Control (SS-20) 20 sub 138kV bus differential relay zone 31 protection outage 4.46 Days
Daily
 
01-Dec-25 07:00 05-Dec-25 18:00 ENMAX TE 20.1TR (SS-20) 20.1TR S protection outage - SS-20 switchgear replacement 4.46 Days
Daily
 
01-Dec-25 07:00 05-Dec-25 18:00 ENMAX TE 20.3TR (SS-20) 20.3TR S protection outage - SS-20 switchgear replacement 4.46 Days
Daily
 
01-Dec-25 07:00 18-Dec-25 18:00 ENMAX TE Protection & Control (SS-39) 39s auto-switching scheme protection outage, SS-39 HV SW replacement 17.46 Days
Daily
 
01-Dec-25 07:30 04-Dec-25 17:30 ALTALINK RB 799L (235s Entwistle - 443s South Mayerthorpe), 799L (77s Sagitawah - 443s South Mayerthorpe) proximity RB for 799L rebuild (str 830-858) 3.42 Days
Daily
 
01-Dec-25 08:00 18-Dec-25 16:00 ENMAX Outage 31.84L (SS-31 - SS-32), 31B138-31.84 (SS-31), 32B138-31.84 (SS-32) 31.84L P&C cut over 17.33 Days
Continuous
 
01-Dec-25 08:00 12-Dec-25 16:00 Syncrude TE Aurora RTU/SCADA (Aurora) SCL - RTU Replacement at G01 for D25 11.33 Days
Continuous
 
01-Dec-25 08:00 04-Dec-25 16:00 ATCO RB 7L32 (811s Clairmont Lake - 862s South Bezanson), 7L32 (813s Little Smoky - 862s South Bezanson) pole replacement structures 385, 482, and 500 (live line technique) 3.33 Days
Continuous
 
01-Dec-25 08:00 03-Dec-25 17:00 ATCO TE ATCO Telecom Equipment Paintearth_s-telecom 2.38 Days
Continuous
 
01-Dec-25 08:00 19-Dec-25 12:30 ENMAX Outage 39.82L (SS-39 - SS-162), 39.2TR (SS-39), 22.81L (SS-22 - SS-39), 39.4TR (SS-39) HV SW Replacement. 39SW81, SW87, SW88, MD-39.4TR, 39.4TR, 39.2TR, 39.82L, 22.81L surge arrestor replacement, 18.19 Days
Continuous
 
01-Dec-25 08:00 01-Dec-25 17:00 ALTALINK TE 428s RTU/SCADA (428s Namaka) adding SCADA communications to transformer devices and testing tap changer controls/indication 9 Hours
Daily
 
01-Dec-25 08:00 01-Dec-25 12:00 ENMAX Outage 2B138-D81 (SS-2) breaker trip coil test 4 Hours
Continuous
 
01-Dec-25 08:00 01-Dec-25 12:00 ENMAX Outage 14.2TR (SS-14) LV breaker maintenance 4 Hours
Continuous
 
01-Dec-25 08:00 12-Dec-25 17:00 ALTALINK TE 397s RTU/SCADA (397s Benbow) update configuration for L2 protection upgrades, 43m, and AIS 1159, 96/252, 96/452, B87/138B1 additions 11.38 Days
Daily
 
01-Dec-25 08:00 12-Dec-25 17:00 ALTALINK TE 397s Protection & Control (397s Benbow) settings changes and testing 11.38 Days
Daily
 
01-Dec-25 08:00 02-Dec-25 16:00 ALTALINK TE 199s RTU/SCADA (199s East Airdrie) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily
 
01-Dec-25 08:00 02-Dec-25 16:00 ALTALINK TE 149s RTU/SCADA (149s Nisku) update RTU configuration to split VLAN 1.33 Days
Daily
 
01-Dec-25 09:00 16-Dec-25 17:00 BCH Outage 1L274 (48s Pocaterra - 978s BCH Britt Creek) for LLP work 15.33 Days
Daily
AB-BC
01-Dec-25 09:00 16-Dec-25 17:00 ALTALINK IO 887L (48s Pocaterra - 978s BCH Britt Creek) hazard tree removal along various sections of circuit near Elk Lakes provincial park 15.33 Days
Daily
 
01-Dec-25 09:00 02-Dec-25 17:30 Lethbridge TE 146s Protection & Control (146s Macdonald), 241s Protection & Control (241s Uplands) transfer 87L communications to new telecom system (SEL-ICON), test 87L comms to confirm differential metering and direct transfer trip (DTT) 1.35 Days
Continuous
 
01-Dec-25 09:00 01-Dec-25 10:00 ATCO TE ATCO Telecom Equipment, 769s RTU/SCADA (769s Stettler) upgrade 769s Stettler 'A' sar os V21 60 Mins
Continuous
 
01-Dec-25 09:00 05-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 745s RTU/SCADA (745s Slave Lake) installing a new panel, SAR and firewall, site configuration updates 4.33 Days
Continuous
 
01-Dec-25 09:00 02-Dec-25 17:00 BCH TE 5L92 (BCH Cranbrook - BCH Selkirk), T2 (BCH Cranbrook), T6 (BCH Cranbrook), 5CB11 (BCH Cranbrook) maintenance 1.33 Days
Continuous
AB-BC
01-Dec-25 09:30 01-Dec-25 18:00 ALTALINK Outage 428s T2 (428s Namaka), 428s 652 (428s Namaka) complete I-bridge install, establish supervisory controls and tap status to Beckwith and function test 8.5 Hours
Daily
 
01-Dec-25 09:30 02-Dec-25 17:30 ALTALINK Outage 314L (207s Pinedale - 228s T.M.P.L. Niton), 207s 314 (207s Pinedale), 228s 314 (228s T.M.P.L. Niton) spare CT's in breaker are going to be used for new RAS-185 protection relays at 207s 1.33 Days
Continuous
 
01-Dec-25 10:00 02-Dec-25 17:00 ATCO Outage 9L56 (720s Wabasca - 876s Brintnell), 876s 904 (876s Brintnell), 876s 902 (876s Brintnell), 876S 902B (876s Brintnell), 876S 904B (876s Brintnell), 720s 9L56D3 (720s Wabasca) trouble shoot CT circuit issues on 99R-3/9L56 test handle 31 Hours
Continuous
 
01-Dec-25 10:00 12-Dec-25 17:30 ATCO TE 977s RTU/SCADA (977s Salt Creek) RTU update 11.31 Days
Continuous
 
01-Dec-25 10:00 12-Dec-25 17:30 ATCO TE 845s Protection & Control (845s Big Mountain), 845s RTU/SCADA (845s Big Mountain) 7L33 protection upgrade
- upgrade SCADA
11.31 Days
Continuous
 
01-Dec-25 10:00 05-Dec-25 17:00 ATCO RB 7L86 (822s Wolf Lake - 1200s Foster Creek) L-G clearance mitigation pole changes 4.29 Days
Continuous
 
01-Dec-25 10:00 05-Dec-25 16:00 ATCO TE 770s RTU/SCADA (770s Three Hills) commission battery monitoring system, update RTU configuration for new communication and alarms 4.25 Days
Continuous
 
01-Dec-25 10:00 04-Dec-25 17:00 ALTALINK TE 37s Protection & Control (37s North Calder) standard relay maintenance 3.29 Days
Daily
 
01-Dec-25 10:00 12-Dec-25 16:00 ATCO TE 977s Protection & Control (977s Salt Creek) PRC-005 testing - troubleshoot S/C operations fail 11.25 Days
Continuous
 
01-Dec-25 10:00 04-Dec-25 17:00 ALTALINK TE 37s Protection & Control (37s North Calder) Maintenance on 2029L, 2063L, 35L, 273L, A87/51/51/T3, B87/50/51/51NN/T3, A87/50/51/51N/T5, B87/50/51/51NN/T5. Redundant protection always in service. Maintenance on 25L1 79/1352, 747L 179, 25SC, 30/A1, 30/A3, 30/A4, 30/A5. No redundancy. 3.29 Days
Daily
 
01-Dec-25 10:00 12-Dec-25 16:00 ATCO TE 745s RTU/SCADA (745s Slave Lake) install new BMS controller and modules on battery bank 11.25 Days
Continuous
 
01-Dec-25 10:00 03-Dec-25 17:00 ALTALINK TE 237s Protection & Control (237s Foothills) protection work 2.29 Days
Daily
 
01-Dec-25 11:00 02-Dec-25 17:00 ALTALINK TE 438s Protection & Control (438s Westlock) standard relay maintenance 30 Hours
Daily
 
01-Dec-25 11:00 02-Dec-25 17:00 ALTALINK TE 225s RTU/SCADA (225s Magrath) salvage work on RTU for telecom equipment, removing old cabling and 24VDC/130VDC equipment 30 Hours
Daily
 
01-Dec-25 11:00 02-Dec-25 17:00 ALTALINK TE 225s Protection & Control (225s Magrath) perform PRC005 relay maintenance 30 Hours
Daily
 
01-Dec-25 11:00 05-Dec-25 17:00 ALTALINK TE 58s RTU/SCADA (58s Edson) RTU database updates 4.25 Days
Daily
 
01-Dec-25 11:00 05-Dec-25 17:00 ALTALINK TE 207s RTU/SCADA (207s Pinedale) RTU database updates 4.25 Days
Daily
 
01-Dec-25 11:00 05-Dec-25 17:00 ALTALINK, CascadeP TE 1047s RTU/SCADA (1047s Whisky Jack) RTU database updates 4.25 Days
Daily
 
01-Dec-25 11:30 01-Dec-25 17:00 ALTALINK TE 482s Protection & Control (482s Haynes) DSP card replacement on T1 A87/T1 URT60 relays 5.5 Hours
Daily
 
01-Dec-25 12:00 03-Dec-25 16:00 ATCO TE 2060s Protection & Control (2060s Engstrom) complete relay testing 2.17 Days
Continuous
 
01-Dec-25 12:00 12-Dec-25 16:00 ATCO TE 898s Heart Lake RTU/SCADA install battery monitoring system, update station controller configuration for BMS connection, test new alarms 11.17 Days
Continuous
 
01-Dec-25 12:01 01-Dec-25 16:00 ENMAX Outage 2B138-D82 (SS-2) breaker trip coil test - 2B138-D82 3.98 Hours
Continuous
 
01-Dec-25 13:00 05-Dec-25 15:00 ATCO RB 7L05 (931s Bohn - 2049s Kettle River) climbing inspection 4.08 Days
Continuous
 
01-Dec-25 13:00 01-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-12) transfer of SCADA from JMUX to JPAX at substations in ring 2 3 Hours
Continuous
 
02-Dec-25 07:00 03-Dec-25 18:00 ALTALINK Outage 135s T1 (135s Conrad), 607L (135s Conrad - 607AL tap) Install tapchanger position sensor and current loop interface, complete I-bridge install, establish supervisory controls and tap status to beckwith and function test. 1.46 Days
Continuous
 
02-Dec-25 07:00 02-Dec-25 17:30 ALTALINK RB 798L (77s Sagitawah - 364s Whitecourt Industrial) replacing guy wires on structure 798L32 10.5 Hours
Daily
 
02-Dec-25 07:00 03-Dec-25 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) firmware upgrade followed by relay testing on bus relay 87BB/900BS1 1.42 Days
Continuous
 
02-Dec-25 07:00 08-Dec-25 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) firmware upgrade followed by relay testing on breaker fail relays for breaker 920, 911, 909 and 919 6.42 Days
Continuous
 
02-Dec-25 07:15 02-Dec-25 12:45 ALTALINK Outage 706L (410s Josephburg - 706AL tap) Replacing insulator on structure 76 5.5 Hours
Daily
 
02-Dec-25 08:00 02-Dec-25 17:00 ENMAX TE Protection & Control (SS-10) 10.1TR 'A' & 'B' protection outage - trip testing 10BA8-10.2TR, 10BB8-10.2TR, 10B138-693 9 Hours
Daily
 
02-Dec-25 08:00 03-Dec-25 17:00 ALTALINK TE 135s RTU/SCADA (135s Conrad) adding SCADA communications to transformer devices and testing tap changer controls/indication 1.38 Days
Daily
 
02-Dec-25 08:00 02-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment replace defective connectors on cabling to radio 9 Hours
Daily
 
02-Dec-25 08:00 02-Dec-25 16:00 ALTALINK TE 62s Protection & Control (62s Brazeau Plant) card replacement 8 Hours
Daily
 
02-Dec-25 08:00 02-Dec-25 12:00 ENMAX Outage 26B138-26BT3 (SS-26) Breaker Trip Circuit Test - 26B138-26BT3 4 Hours
Continuous
 
02-Dec-25 08:00 02-Dec-25 17:00 ATCO TE 732s Protection & Control (732s Mitsue) block 21B/9L913 relay to perform voltage/current injections to verify new SCADA analogs 9 Hours
Continuous
 
02-Dec-25 08:00 03-Dec-25 17:00 ALTALINK TE 520s Protection & Control (520s Bennett), 1201L (520s Bennett - BCH Cranbrook) test the RAS 11 and RAS 12 "A/B" undervoltage and overpower scheme 1.38 Days
Daily
 
02-Dec-25 08:00 02-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment complete MPLS upgrade 9 Hours
Daily
 
02-Dec-25 08:00 03-Dec-25 16:00 ALTALINK TE 237s RTU/SCADA (237s Foothills) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily
 
02-Dec-25 08:00 03-Dec-25 16:00 ALTALINK TE 325s RTU/SCADA (325s Leduc) update RTU configuration to split VLAN 1.33 Days
Daily
 
02-Dec-25 08:30 03-Dec-25 18:00 ATCO Outage 9L99 (801s Anderson - 807s Sheerness), 801s 906 (801s Anderson), 801S 906A (801s Anderson), 801s 907 (801s Anderson), 801S 907A (801s Anderson) DFR requires 9L99 inputs to meet PRC-002 compliance 1.4 Days
Continuous
 
02-Dec-25 08:30 02-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-28) transfer of SCADA from JMUX to JPAX at substations in ring 2 3.5 Hours
Continuous
 
02-Dec-25 09:00 03-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 809s RTU/SCADA (809s Louise Creek) firewall install 1.33 Days
Continuous
 
02-Dec-25 09:00 02-Dec-25 10:00 ATCO TE ATCO Telecom Equipment, 910s RTU/SCADA (910s Excel) upgrade 60 Mins
Continuous
 
02-Dec-25 09:00 02-Dec-25 16:00 ATCO TE 801s Protection & Control (801s Anderson), 801s RTU/SCADA (801s Anderson) configuration changes to the station controller, RTAC and RTU, .
PACS firmware upgrade
7 Hours
Continuous
 
02-Dec-25 09:30 02-Dec-25 17:00 ALTALINK TE 68s Protection & Control (68s Willesden Green) DSP card replacement on T1 B87/50/51/51NN/T1&A27/DER URT60 relays 7.5 Hours
Daily
 
02-Dec-25 10:00 02-Dec-25 16:00 ATCO TE 700s Protection & Control (700s Bonnyville) relay testing 6 Hours
Continuous
 
02-Dec-25 10:00 03-Dec-25 17:00 ATCO TE 801s Protection & Control (801s Anderson) 9L99 line protection blocked to allow for circuit cutovers to DFR 31 Hours
Continuous
 
02-Dec-25 12:00 02-Dec-25 16:00 ENMAX Outage 6.80L (SS-6 - SS-35), 6B138-6.80 (SS-6) Breaker Trip Circuit Test - 6B138-6.80 4 Hours
Continuous
 
02-Dec-25 12:46 02-Dec-25 18:15 ALTALINK Outage 700L (422s Westwood - 746L tap), 700L (746s Sherwood Park - 746L tap) Replacing insulator on structure 52 5.48 Hours
Daily
 
02-Dec-25 13:00 11-Dec-25 09:00 ENMAX, ALTALINK Outage 693L (42s Sarcee - SS-10), 10.2TR (SS-10), 10MD138-10.2TR (SS-10) 10.2TR 'S' protection replacement. Trip test 10B138-693L. Protection operation 10MD138-10.2TR. 8.83 Days
Continuous
 
02-Dec-25 13:00 11-Dec-25 09:00 ENMAX, ALTALINK Outage 693L (42s Sarcee - SS-10) 10.2TR 'S' protection replacement. Trip test 10B138-693L. Protection operation 10MD138-10.2TR. 8.83 Days
Continuous
 
02-Dec-25 13:00 02-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-21) transfer of SCADA from JMUX to JPAX at substations in ring 2 3 Hours
Continuous
 
03-Dec-25 07:00 04-Dec-25 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) firmware upgrade and local relay testing for bus relay 87BB/900BS2 1.42 Days
Continuous
 
03-Dec-25 08:00 03-Dec-25 18:00 Syncrude TE Syncrude ICCP Outage server update
whole Syncrude visibility loss
10 Hours
Daily
 
03-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 39s Protection & Control (39s Bickerdike) card replacements 1.38 Days
Daily
 
03-Dec-25 08:00 04-Dec-25 16:00 ALTALINK TE 272s RTU/SCADA (272s Springbank) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily
 
03-Dec-25 08:00 04-Dec-25 16:00 ALTALINK TE 595s RTU/SCADA (595s Spruce Grove) update RTU configuration to split VLAN 1.33 Days
Daily
 
03-Dec-25 08:30 03-Dec-25 12:00 ALTALINK TE 428s Protection & Control (428s Namaka) DSP card replacement on T2 A87/50/51/51NN/27/T2 URT60 relays 3.5 Hours
Daily
 
03-Dec-25 08:30 03-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-36) transfer of SCADA from JMUX to JPAX at substations in ring 2 3.5 Hours
Continuous
 
03-Dec-25 09:00 03-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 710s RTU/SCADA (710s Vermilion) low BES firewall install 8 Hours
Continuous
 
03-Dec-25 09:00 03-Dec-25 17:30 ALTALINK Outage 510s R3 (510s Sunnybrook), 510s 2852 (510s Sunnybrook), 510s 2952 (510s Sunnybrook), 510s 7689 (510s Sunnybrook) sudden pressure relay testing for PRC compliance on TX 18953 (R3A) TX 18954 (R3B) TX 18955 (R3C) 8.5 Hours
Daily
 
03-Dec-25 09:00 03-Dec-25 17:30 ATCO, ALTALINK Outage 12L41 (510s Sunnybrook - 939s Livock) ALtalink Outage request and scope, sudden pressure relay testing for PRC compliance
8.5 Hours
Continuous
 
03-Dec-25 09:00 04-Dec-25 17:30 Lethbridge TE 146s Protection & Control (146s Macdonald), 593s Protection & Control (593s Lakeview) transfer 87L communications to new telecom system (SEL-ICON), test 87L comms to confirm differential metering and direct transfer trip (DTT) 1.35 Days
Continuous
 
03-Dec-25 09:30 04-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 757s RTU/SCADA (757s Battle River), ATCO TPR Outage IRU software upgrading - Cordel to Tinchebray / BR 31.5 Hours
Continuous
 
03-Dec-25 09:30 04-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment - IRU PM Cordel–Tinchebray/Paintearth/Battle River. Switch radios from Primary to Secondary and back (1–10s hit). Upgrade IRU software per Engineering (15–30min link outage). 31.5 Hours
Continuous
 
03-Dec-25 09:30 03-Dec-25 15:00 ATCO TE 801s Protection & Control (801s Anderson) cutover 906PT circuit to DFR 5.5 Hours
Continuous
 
03-Dec-25 09:30 08-Dec-25 17:30 ALTALINK Outage 890L (58s Edson - 207s Pinedale) Spare CT's in breaker are going to be used for new RAS-185 protection relays at 207s 5.33 Days
Continuous
 
03-Dec-25 10:00 04-Dec-25 16:00 ATCO TE 717s Protection & Control (717S Ethel Lake) relay testing 30 Hours
Continuous
 
03-Dec-25 10:00 08-Dec-25 17:00 ALTALINK, CascadeP TE 1047s Protection and Control (1047s Whisky Jack) new relay install for RAS-185 5.29 Days
Daily
 
03-Dec-25 10:00 08-Dec-25 17:00 ALTALINK TE 58s Protection & Control (58s Edson) new relay install for RAS-185 5.29 Days
Daily
 
03-Dec-25 10:00 08-Dec-25 17:00 ALTALINK TE 207s Protection & Control (207s Pinedale) new relay install for RAS-185 5.29 Days
Daily
 
03-Dec-25 11:00 03-Dec-25 15:00 ALTALINK TE AltaLink Telecom Equipment, 137s RTU/SCADA (137s Sedgewick), 137s Protection & Control (137s Sedgewick) radio maintenance/repair 4 Hours
Daily
 
03-Dec-25 11:00 03-Dec-25 15:00 ALTALINK TE 478s RTU/SCADA (478s Tucuman), AltaLink Telecom Equipment upgrade MPLS nodes 4 Hours
Daily
 
03-Dec-25 12:15 03-Dec-25 17:45 ALTALINK Outage 761L (38s East Edmonton - 71s Lamoureux) Replacing insulator on structure 100 5.5 Hours
Daily
 
03-Dec-25 13:00 03-Dec-25 17:00 ALTALINK TE 297s Protection & Control (297s Rimbey) DSP card replacement on the following relay(s): T1 A87/50/51/51NN/T1 URT60, T2 A87/50/51/51NN/T2 URT60 4 Hours
Daily
 
03-Dec-25 13:00 03-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-16) transfer of SCADA from JMUX to JPAX at substations in ring 2 3 Hours
Continuous
 
04-Dec-25 07:00 18-Dec-25 18:00 ATCO, ALTALINK Outage 807AL (402s Scotford Expansion One - 807L tap), 807L (233s Beamer - 807AL tap), 807L (410s Josephburg - 807AL tap), 233s 807X (233s Beamer) 807L capacity upgrade project replace existing structures 67B-71, & 75, re-conductor 67A-71 & 74 (233s A-frame) and update grounding on 807L surge arresters 14.46 Days
Continuous
 
04-Dec-25 07:00 04-Dec-25 15:00 ALTALINK Outage 233s 138kV Bus 1 (233s Beamer), 233s T1 (233s Beamer), 233s 6 (233s Beamer) re-conductor drops to 233s807X 8 Hours
Daily
 
04-Dec-25 07:00 19-Dec-25 18:00 ALTALINK RB 1053L (132s Ware Junction - 324s Cassils) due to proximity to 931L 15.46 Days
Daily
 
04-Dec-25 07:00 04-Dec-25 18:00 ALTALINK Outage 254s T2 (254s Coaldale), 254s 35 (254s Coaldale) complete I-bridge install, establish supervisory controls and tap status to beckwith and function test 11 Hours
Daily
 
04-Dec-25 07:00 05-Dec-25 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) firmware upgrade and local relay testing for bus relay 87BB/900BS3 1.42 Days
Continuous
 
04-Dec-25 07:00 06-Dec-25 17:30 ALTALINK RB 708L (71s Lamoureux - 708AL tap), 708L (233s Beamer - 708AL tap), 708AL (388s Riverside - 708L tap) facilitate new conductor install from 233s to 807L structure 74 2.44 Days
Daily
 
04-Dec-25 07:00 06-Dec-25 17:30 ALTALINK RB 942L (71s Lamoureux - 681s Bannerman) working near 807L67A 2.44 Days
Daily
 
04-Dec-25 07:00 04-Dec-25 17:00 EPCOR TE 987s RTU/SCADA (987s Clover Bar) Cloverbar - 25/72/240 kV RTU outage 10 Hours
Continuous
 
04-Dec-25 07:15 04-Dec-25 13:45 ALTALINK Outage 861L (71s Lamoureux - 258s Dow Hydrocarbons) Replacing insulator on structure 16 6.5 Hours
Daily
 
04-Dec-25 08:00 05-Dec-25 16:00 ATCO Outage 7L32 (811s Clairmont Lake - 862s South Bezanson) TCM Pole replacement structure 1 1.33 Days
Continuous
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 254s RTU/SCADA (254s Coaldale) adding SCADA communications to transformer devices and testing tap changer controls/indication 9 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 245s Protection & Control (245s Seebe) troubleshoot recloser failure to operate 9 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:30 ALTALINK Outage 535s 6452 (535s Joffre) Urgent Replace Failing tank heaters 9.5 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 245s Protection & Control (245s Seebe) protection outage on 81/138B to resolve outstanding deficiencies involving logic change 9 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 245s RTU/SCADA (245s Seebe) RTU outage to solve outstanding deficiencies involved with the 81/138B U/F protection upgrade 9 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 365s RTU/SCADA (365s Canadianoxy Astotin Creek), AltaLink Telecom Equipment upgrade MPLS node 9 Hours
Daily
 
04-Dec-25 08:00 05-Dec-25 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move 7L45 str 158 1.33 Days
Continuous
 
04-Dec-25 08:00 05-Dec-25 16:00 ATCO RB 7L45 (798s Bridge Creek - 845s Big Mountain), 7L45 (798s Bridge Creek - 813s Little Smoky) high load move 7L45 str 158 1.33 Days
Continuous
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 906s Protection & Control (906s Ross Creek), 906s RTU/SCADA (906s Ross Creek) upgrade MPLS firmware 9 Hours
Daily
 
04-Dec-25 08:00 04-Dec-25 17:00 ALTALINK TE 296s RTU/SCADA (296s Rosyth), AltaLink Telecom Equipment 9465R radio maintenance 9 Hours
Daily
 
04-Dec-25 08:00 05-Dec-25 16:00 ALTALINK TE 502s RTU/SCADA (502s Shell Waterton (#2)) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily
 
04-Dec-25 08:30 04-Dec-25 15:00 ALTALINK Outage 1005AL (991s Little Bow - 1005L tap), 1005L (120s Picture Butte - 1005AL tap), 1005L (356s Milo - 1005AL tap) Closing Open point 'B' 6.5 Hours
Daily
 
04-Dec-25 08:30 04-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-34) transfer of SCADA from JMUX to JPAX at substations in Ring 2 3.5 Hours
Continuous
 
04-Dec-25 09:00 04-Dec-25 16:00 ATCO TE 2011s Protection & Control (2011s Dawes) complete relay testing 7 Hours
Continuous
 
04-Dec-25 09:00 04-Dec-25 20:00 SUNCOR TE Suncor RTU/SCADA (Suncor) replace main network routers for MCC and BCC 11 Hours
Continuous
 
04-Dec-25 09:00 04-Dec-25 20:00 SUNCOR TE 30EDD-2 RTU/SCADA (30EDD-2) 30EDD2 S23 meter exchange 11 Hours
Continuous
 
04-Dec-25 09:00 05-Dec-25 17:00 BCH TE 5CB13 (BCH Cranbrook), 5L92 (BCH Cranbrook - BCH Selkirk), T3 (BCH Cranbrook), T7 (BCH Cranbrook) maintenance 1.33 Days
Continuous
AB-BC
04-Dec-25 09:00 04-Dec-25 10:59 ATCO Outage 9L16 (755s Cordel - 972s Tinchebray) 9L16 needs to be open ended at 755S for telecom work 1-00499987 as per Atco's Risk Assessment 119 Mins
Continuous
 
04-Dec-25 10:00 04-Dec-25 12:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) RigSat needs to remotely upgrade our satellite equipment 2 Hours
Daily
 
04-Dec-25 11:00 19-Dec-25 18:00 ALTALINK Outage 931L (28s West Brooks - 132s Ware Junction) install new structures as part of the 1075L storm restoration. 15.29 Days
Continuous
 
04-Dec-25 13:00 04-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-15) transfer of SCADA from JMUX to JPAX at substations in ring 2 3 Hours
Continuous
 
05-Dec-25 07:00 05-Dec-25 17:00 EPCOR Outage 665s T3 (665s Dome), 665s D2404 (665s Dome) lighting replacement on pole #3 10 Hours
Continuous
 
05-Dec-25 07:00 05-Dec-25 17:00 ALTALINK, EPCOR TE 1058L (657s Summerside - EP 803s Lambton) protection blocking, fault investigation 10 Hours
Continuous
 
05-Dec-25 07:00 06-Dec-25 17:00 ATCO TE 951s Protection & Control (951s Thickwood Hills) firmware upgrade and relay testing for 50-51-27-59/920C 1.42 Days
Continuous
 
05-Dec-25 07:15 05-Dec-25 13:45 ALTALINK Outage 703L (213s Hughenden - 703BL tap), 213s 703 (213s Hughenden) replacing insulator on structure 73 6.5 Hours
Daily
 
05-Dec-25 08:00 07-Dec-25 20:00 SUNCOR TE 29EDD-2 Protection & Control (29EDD-2 Tar Island), 29PL6-6 (29EDD-1 Millennium - 29EDD-2 Tar Island) 29EDD2 29PL6-6 relay 87L-A testing 2.5 Days
Continuous
 
05-Dec-25 08:00 05-Dec-25 17:00 SUNCOR TE 635EDD-1001 635-752-643 (635EDD-1001), 635EDD-1001 635-752-642 (635EDD-1001) ABB breaker failure relay taken out-of-service to replace time sync card in the relay 9 Hours
Continuous
 

Prepared On:   2025-11-26   15:01:33

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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