Alberta Electric System Operator
System Co-ordination Plan
2025-12-04 to 2025-12-12
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
 
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
 
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 06-Dec-25 17:00 EPCOR Outage 330P 12TC1 (330p Genesee), 330p 805 (330p Genesee) Genesee: 12TC1 emergency bushing investigation 52.25 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 12-Dec-25 16:00 ENMAX Outage 20.1TR (SS-20) maintenance 30.33 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 09:00 05-Dec-25 17:30 ALTALINK TE 177s RTU/SCADA (177s West Cascade) SCADA cutover 18.35 Days
Daily
 
21-Nov-25 08:00 09-Jan-26 16:00 ENMAX Outage 38.3TR (SS-38) 38.3TR secondary cable replacement 49.33 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 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 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 07:30 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 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 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 17:46 05-Dec-25 18:00 ATCO Outage 876s 901T (876s Brintnell) forced outage oil leaking 10.01 Days
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
 
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
 
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) RTU replacement 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 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 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 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 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 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) relay maintenance 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 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 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 13:00 05-Dec-25 15:00 ATCO RB 7L05 (931s Bohn - 2049s Kettle River) climbing inspection 4.08 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 13:00 11-Dec-25 13:00 ENMAX, ALTALINK Outage 10B138-693 (SS-10), 693L (42s Sarcee - SS-10), 10.2TR (SS-10), 10MD138-10.2TR (SS-10) protection replacement., trip test, protection operation 9 Days
Continuous
 
02-Dec-25 13:00 11-Dec-25 09:00 ENMAX, ALTALINK IO 693L (42s Sarcee - SS-10) protection replacement., trip test, protection operation 8.83 Days
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 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 09:00 04-Dec-25 20:00 SUNCOR TE Suncor RTU/SCADA (Suncor) replace main network routers for MCC and BCC 1.46 Days
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, ALTALINK TE ATCO Telecom Equipment, 757s RTU/SCADA (757s Battle River), ATCO TPR Outage, APS# 134 Central East Transfer Out Overload Mitigation Scheme 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), and upgrade IRU software with 15–30min link outage 31.5 Hours
Continuous
 
03-Dec-25 09:30 08-Dec-25 17:30 ALTALINK Outage 890L (58s Edson - 207s Pinedale), 58s 890 (58s Edson), 207s 890 (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
 
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 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), 258s 152 (258s Dow Hydrocarbons), 258s 252 (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), 811s 710 (811s Clairmont Lake) pole replacement structure 1 TCM 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 17:00 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 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 08:31 04-Dec-25 15:00 ALTALINK, Travers2SolarLP Outage 1005AL (991s Little Bow - 1005L tap), 1005L (120s Picture Butte - 1005AL tap), 1005L (356s Milo - 1005AL tap), 991s 240-1 (991s Little Bow), 991s T1 (991s Little Bow), 991s T2 (991s Little Bow), 991s T3 (991s Little Bow), 991s T1B1 (991s Little Bow), 991s T2B1 (991s Little Bow), 991s T3B1 (991s Little Bow) closing open point 'B' 6.48 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 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
 
04-Dec-25 09:00 04-Dec-25 10:59 ATCO Outage 9L16 (755s Cordel - 972s Tinchebray) open ended at 755S for telecom work per 1-00499987 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
 
06-Dec-25 07:00 06-Dec-25 17:00 EPCOR Outage 330p 500kV Bus 1 (330p Genesee), 330P 12TC1 (330p Genesee), 330p 1201 (330p Genesee), 330p 1204 (330p Genesee), 330p 1207 (330p Genesee), 330p 1210 (330p Genesee), 330p 1214 (330p Genesee), 330p 805 (330p Genesee) urgent reconnection of 12TC1 500kV leads and 12TC1 energization 10 Hours
Continuous
AB-BC/MATL
06-Dec-25 07:15 06-Dec-25 12:45 ALTALINK Outage 729L (285s East Camrose - 542s Ervick) Replacing insulator on structure 259 5.5 Hours
Daily
 
06-Dec-25 08:00 06-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-20) SDN upgrade 8 Hours
Continuous
 
06-Dec-25 12:46 06-Dec-25 18:15 ALTALINK Outage 174L (197s Bardo - 395s North Holden) Replacing insulator on structure 653 5.48 Hours
Daily
 
07-Dec-25 07:15 07-Dec-25 13:45 ALTALINK Outage 801L (62s Brazeau Plant - 294s Brazeau Plant Outlet Works) Replacing insulator on structure 38 6.5 Hours
Daily
 
08-Dec-25 07:00 12-Dec-25 17:00 EPCOR Outage EP 803s L721 (EP 803s Lambton), EP 803s T3 (EP 803s Lambton) L721 breaker maintenance (min oil) 4.42 Days
Continuous
 
08-Dec-25 07:00 11-Dec-25 17:00 EPCOR, ALTALINK Outage 240BA3 (629s Argyll Transfer Station - 814s Bellamy), 1055L (629s Argyll Transfer Station - 816s Petrolia), 814s B2406 (814s Bellamy), 814s B2407 (814s Bellamy), 814s BDS20 (814s Bellamy) 240BA3 metering upgrade cutovers 3.42 Days
Continuous
 
08-Dec-25 07:00 12-Dec-25 17:00 EPCOR Outage 557s T1 (557s Castle Downs) surge arrestor LCR 4.42 Days
Continuous
 
08-Dec-25 07:00 11-Dec-25 17:00 ALTALINK, EPCOR IO 1055L (629s Argyll Transfer Station - 816s Petrolia) 240BA3 metering upgrade cutovers 3.42 Days
Continuous
 
08-Dec-25 07:00 08-Dec-25 17:00 EPCOR, ALTALINK Outage 657s T3 (657s Summerside), 657s SU2401 (657s Summerside), 657s SU2405 (657s Summerside) lighting upgrade on pole #1 10 Hours
Continuous
 
08-Dec-25 07:00 14-Dec-25 19:00 ATCO RB 7L143 (766s Nevis - 769s Stettler) facilitate work adjacent to line for CETO project 6.5 Days
Continuous
 
08-Dec-25 07:00 08-Dec-25 17:00 EPCOR TE 72LH8 (EP 803s Lambton - EP Hardisty) lh8: protection blocking, relay maintenance. 10 Hours
Continuous
 
08-Dec-25 07:00 15-Dec-25 18:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) HOP on 7L16 to facilitate work adjacent to line for CETO project, stringing activities over 7L16 7.46 Days
Continuous
 
08-Dec-25 07:30 11-Dec-25 17:30 ATCO, ALTALINK RB 1036L (356s Milo - 554s Travers) notification clean up on 1036L (STR 5 - 45) 3.42 Days
Daily
 
08-Dec-25 07:30 11-Dec-25 17:30 ALTALINK RB 1005AL (991s Little Bow - 1005L tap), 1005L (120s Picture Butte - 1005AL tap), 1005L (356s Milo - 1005AL tap) maintenance on 1005L (STR 88-228) 3.42 Days
Daily
 
08-Dec-25 07:30 11-Dec-25 17:30 ALTALINK RB 1041L (370s North Lethbridge - 554s Travers) close proximity on 1005L (STR 88-228) 3.42 Days
Daily
 
08-Dec-25 07:30 11-Dec-25 17:30 ALTALINK RB 799L (235s Entwistle - 443s South Mayerthorpe), 799L (77s Sagitawah - 443s South Mayerthorpe) proximity RB for 799L rebuild cleanup (Str 830-858) 3.42 Days
Daily
 
08-Dec-25 08:00 10-Dec-25 08:00 ATCO TE 2029s RTU/SCADA (2029s Heathfield) low system risk alarms will be caused and restarts of devices required 2 Days
Continuous
 
08-Dec-25 08:00 11-Dec-25 17:00 ATCO TE 732s Protection & Control (732s Mitsue) block 87TB/902T transformer protection to verify out of service upstream bus relay CT inputs, wiring changes may be required 3.38 Days
Continuous
 
08-Dec-25 08:00 12-Dec-25 17:00 ATCO RB 7L86 (822s Wolf Lake - 1200s Foster Creek) L-G clearance mitigation pole changes. 4.38 Days
Continuous
 
08-Dec-25 08:00 12-Dec-25 17:00 ALTALINK TE 39s RTU/SCADA (39s Bickerdike) update config for AIS 1159 additions 4.38 Days
Daily
 
08-Dec-25 08:00 12-Dec-25 17:00 ALTALINK TE 1012s RTU/SCADA (1012s Deer Hill) update config for AIS 1159 additions, and 43M addition 4.38 Days
Daily
 
08-Dec-25 08:00 12-Dec-25 17:00 ALTALINK TE 1012s Protection & Control (1012s Deer Hill) settings changes & testing on A21/L2, B21/L2, A21/L1, & B21/L1 for 1159AIS scheme 4.38 Days
Daily
 
08-Dec-25 08:00 08-Dec-25 16:00 ENMAX Outage 16.61L (SS-16 - SS-27) 16.61L SEL-311L ASW Logic Correction 16sub, 27sub 8 Hours
Continuous
 
08-Dec-25 08:00 08-Dec-25 16:00 ENMAX Outage 2.80L (SS-2 - SS-23), 23B138-2.80 (SS-23) shield wire corrosion testing. 8 Hours
Continuous
 
08-Dec-25 08:30 08-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-38) transfer of SCADA from JMUX to JPAX at substations in ring 2 3.5 Hours
Continuous
 
08-Dec-25 09:00 08-Dec-25 17:00 ALTALINK TE 12s Protection & Control (12s Heartland) card replacements 8 Hours
Daily
 
08-Dec-25 09:00 09-Dec-25 17:00 ATCO TE ATCO Telecom Equipment install new Nokia RS232, install new SAR A, SDI cards 1.3/1.4 slots, ETH cards 1.1/1.2 1.33 Days
Continuous
 
08-Dec-25 09:00 12-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 727s RTU/SCADA (727s Kinuso) Kinuso_S-Telecom- installing a new panel, SAR and firewall Dec 8, 9, 10 on site 4.33 Days
Continuous
 
08-Dec-25 10:00 08-Dec-25 15:00 ATCO Outage 7L53 (700s Bonnyville - 7LA53 tap), 700s 702 (700s Bonnyville) 7L53 outage required to complete work on 7L53-620 5 Hours
Continuous
 
08-Dec-25 10:00 09-Dec-25 17:30 ATCO Outage 977s 901T (977s Salt Creek), 7L135 (820s Hangingstone - 977s Salt Creek) tie in CT circuits on 901T for GIS monitor 31.5 Hours
Continuous
 
08-Dec-25 10:00 12-Dec-25 17:30 ATCO TE 749s Flyingshot Lake Protection & Control, 749s Flyingshot Lake RTU/SCADA 7L33 protection upgrade
, upgrade SCADA
4.31 Days
Continuous
 
08-Dec-25 10:00 08-Dec-25 17:30 ATCO TE 775s Protection & Control (775s Sullivan Lake) A protection 604C relay settings update 7.5 Hours
Continuous
 
08-Dec-25 10:00 12-Dec-25 17:00 ALTALINK TE 39s Protection & Control (39s Bickerdike) settings changes & testing on A21/L1 & B21/L1 for 1159AIS scheme 4.29 Days
Daily
 
08-Dec-25 11:00 10-Dec-25 17:00 ATCO TE 710s Protection & Control (710s Vermilion) upgrade firmware and settings to add breaker failure function to A and B protections 2.25 Days
Continuous
 
08-Dec-25 11:00 12-Dec-25 17:00 ALTALINK TE 205s RTU/SCADA (205s Castle Rock Ridge) ACC visibility SCADA upgrade - alarm splitting, RTU config updates 4.25 Days
Daily
 
08-Dec-25 11:00 12-Dec-25 17:00 ALTALINK TE 58s RTU/SCADA (58s Edson) RTU database updates 4.25 Days
Daily
 
08-Dec-25 11:00 12-Dec-25 17:00 ALTALINK TE 207s RTU/SCADA (207s Pinedale) RTU database updates 4.25 Days
Daily
 
08-Dec-25 11:00 12-Dec-25 17:00 ALTALINK, CascadeP TE 1047s RTU/SCADA (1047s Whisky Jack) RTU database updates 4.25 Days
Daily
 
08-Dec-25 11:30 08-Dec-25 16:30 ALTALINK Outage 719L (263s Strachan - 719AL tap), 263s 719 (263s Strachan) alarm splitting/wiring modifications - ACC visibility project 5 Hours
Daily
 
08-Dec-25 12:00 12-Dec-25 16:00 ATCO TE 960s Protection & Control (960s Birchwood Creek) complete relay testing 4.17 Days
Continuous
 
08-Dec-25 12:00 11-Dec-25 17:00 ALTALINK TE 263s RTU/SCADA (263s Strachan) supervisory/visibility RTU outages required- ACC visibility/Alarm splitting project - change settings, add alarms and scada points, update configurations on RTU 3.21 Days
Daily
 
08-Dec-25 12:30 08-Dec-25 15:00 ALTALINK IO 887L (48s Pocaterra - 978s BCH Britt Creek) RAS 3 timing test for BC Hydro 2.5 Hours
Daily
 
08-Dec-25 12:30 08-Dec-25 15:00 ALTALINK, BCH TE 48s Protection & Control (48s Pocaterra), APS# 913 Pocaterra RAS and NTL RAS (part of "Alberta Tie RAS") RAS 3 relays out of service for timing test 2.5 Hours
Daily
 
08-Dec-25 13:00 12-Dec-25 17:00 ATCO Outage 9L40 (732s Mitsue - 809s Louise Creek), 732s 901 (732s Mitsue), 732s 902 (732s Mitsue), 732s 9L40D2 (732s Mitsue) 240kV bus and 144kV breaker fail protection upgrade and SCADA upgrade 4.17 Days
Continuous
 
08-Dec-25 13:00 08-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-39) transfer of SCADA from JMUX to JPAX at substations in ring 2 3 Hours
Continuous
 
09-Dec-25 07:00 12-Dec-25 17:30 ALTALINK Outage 38s 7252 (38s East Edmonton) replace CTs 3.44 Days
Continuous
 
09-Dec-25 07:00 12-Dec-25 17:30 ALTALINK, EPCOR RB 915L (38s East Edmonton - 987s Clover Bar) 915L: Reclose Block, Altalink working on 38s7252 3.44 Days
Continuous
 
09-Dec-25 07:00 10-Dec-25 17:00 EPCOR, ALTALINK Outage 657s T2 (657s Summerside), 657s SU2402 (657s Summerside), 657s SU2403 (657s Summerside) lighting upgrade on poles 1.42 Days
Continuous
 
09-Dec-25 07:00 09-Dec-25 17:00 ALTALINK TE 510s Protection & Control (510s Sunnybrook) standard relay maintenance, redundant protections in place at all times 10 Hours
Daily
 
09-Dec-25 07:00 09-Dec-25 17:00 EPCOR Outage T1 (Kennedale) switching assessments 10 Hours
Continuous
 
09-Dec-25 07:30 09-Dec-25 12:30 ALTALINK Outage 263s C1 (263s Strachan) alarm splitting or wiring modifications 5 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 18:00 ALTALINK Outage 864AL (346s Kaybob - 864L tap), 864BL (355s Chevron Knight - 864L tap), 864L (397s Benbow - 864AL tap), 864L (551s Chevron Kaybob - 864BL tap), 864L (864AL tap - 864BL tap), 685L (397s Benbow - 1012s Deer Hill), 551s T1 (551s Chevron Kaybob), 346s T1 (346s Kaybob), 355s T1 (355s Chevron Knight), 355s T2 (355s Chevron Knight) Close 864L Open Point 'A'. Functional testing from 397s to 1117s. Functional testing of 685L anti-islanding. Energize new 1117s & 397s714. Replace capacitor & oil in 346s VR1. 10 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 17s Protection & Control (17s Benalto) Remote: Through Fault Reporting Settings Change on the following Redundant Protection: B87/50/51/T2, A87/50/51/T1. One at a time. Momentary alarm when setting is changed,. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 63s Protection & Control (63s Red Deer) Remote: Through Fault Reporting Settings Change on the following Redundant Protection: A87/50/51/51N/T4. Momentary alarm when setting is changed,. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 74s Protection & Control (74s Janet) Remote: Through Fault Reporting Settings Change on the following Redundant Protection: A87/50/51/T1. Momentary alarm when setting is changed,. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 138s Protection & Control (138s Windy Flats) Remote: Through Fault Reporting Settings Change on the following Redundant Protection: A87/50/51/T1 A87/50/51/T2. Momentary alarm when setting is changed. one at a time. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 275s Protection & Control (275s Jenner) Remote: Through Fault Reporting Settings Change on the following Redundant Protection: B87/50/51/T1, B87/50/51/T2, A87/50/5151N/T3. Momentary alarm when setting is changed. one at a time. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 310p Protection & Control (310p Sundance) standard relay maintenance 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 77s Protection & Control (77s Sagitawah) standard relay maintenance 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 285s Protection & Control (285s East Camrose) PRC/standard maint on the following non redundant relay: 27/BAT, 87/25B2, 87/25B1. Standard Maint on the following redundant prot: B87/50/51/T1 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK, ALPAC TE AltaLink Telecom Equipment, 282s Protection & Control (282s Grassland (Alpac)), 282s RTU/SCADA (282s Grassland (Alpac)) update 282s MPLS firmware 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 39s RTU/SCADA (39s Bickerdike), 39s Protection & Control (39s Bickerdike) upgrade MPLS node 9 Hours
Daily
 
09-Dec-25 08:00 10-Dec-25 17:00 ALTALINK TE 650s RTU/SCADA (650s Hansman Lake) RTU database update 1.38 Days
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE 285s Protection & Control (285s East Camrose) standard relay maintenance 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 107s RTU/SCADA (107s Westfield) A new waveguide bridge is to be installed at 107S Westfield as the coax cables from MDS radio to antenna are currently placed inside an underground buried conduit. 9 Hours
Daily
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment complete MPLS upgrade 9 Hours
Daily
 
09-Dec-25 08:00 10-Dec-25 16:00 ATCO RB 7L45 (798s Bridge Creek - 813s Little Smoky), 7L45 (798s Bridge Creek - 845s Big Mountain) high load move 7L45 str 158 1.33 Days
Continuous
 
09-Dec-25 08:00 10-Dec-25 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move 7L46 str 158 1.33 Days
Continuous
 
09-Dec-25 08:00 09-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 317s RTU/SCADA (317s Baseline) update MPLS node 9 Hours
Daily
 
09-Dec-25 08:00 11-Dec-25 17:00 ALTALINK, EXPPIPE TE AltaLink Telecom Equipment, 329s RTU/SCADA (329s Hrt Express) update MPLS Node 2.38 Days
Daily
 
09-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 429s RTU/SCADA (429s Nelson Lake), AltaLink Telecom Equipment update MPLS node 2.38 Days
Daily
 
09-Dec-25 08:00 09-Dec-25 16:00 ENMAX Outage 16.63L (SS-16 - SS-36) 16.63L SEL-311L ASW Logic Correction, 16sub, 36sub 8 Hours
Continuous
 
09-Dec-25 08:00 09-Dec-25 16:00 ENMAX Outage 8.3TR (SS-8) rack spare breaker into 8BA8-8.3TR 8 Hours
Continuous
 
09-Dec-25 08:00 09-Dec-25 16:00 ENMAX Outage 13.2TR (SS-13) oil and water leaks inspection and repair 8 Hours
Continuous
 
09-Dec-25 08:30 09-Dec-25 16:30 ALTALINK TE 186s Protection & Control (186s Dry Creek) DSP card replacement on the B138B1 87/138B1 URB30 relays 8 Hours
Daily
 
09-Dec-25 08:30 09-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-14) transfer of SCADA from JMUX to JPAX at substations in Ring 2 3.5 Hours
Continuous
 
09-Dec-25 09:00 11-Dec-25 17:00 ATCO TE ATCO Telecom Equipment Flat Top Telecom
Replacement of existing Damaged Elliptical Wave guide. Dish Facing Mitsue.
IMPACT TO THE FOLLOWING TRAFFIC:
ATCO POWER PEMBINA KARR SCADA
9L40 A&B
9L15 A&B
9L913 A&B
12L41 A&B ALTERNATE PROTECTION PRIMARY PROTECTION IN SERVICE VIA FIBER)
12L41 LTO RAS A
2.33 Days
Continuous
 
09-Dec-25 09:00 11-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 766s RTU/SCADA (766s Nevis) Nevis_S-Telecom- LOW BES Firewall Install - Outage to Local Network & SCADA Communications Loss of 755s RTU for 90 mins expected. 2.33 Days
Continuous
 
09-Dec-25 09:00 09-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment NOC provision server issue with radio, resolve with access to the radio on site 8 Hours
Daily
 
09-Dec-25 09:00 09-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 716s RTU/SCADA (716s Lloydminster) LOW BES firewall install 8 Hours
Continuous
 
09-Dec-25 09:00 10-Dec-25 17:00 BCH TE 2CB7 (BCH Cranbrook), 5L92 (BCH Cranbrook - BCH Selkirk), T2 (BCH Cranbrook), T6 (BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Cranbrook), 5L94 (BCH Cranbrook - 102s Langdon) maintenance 1.33 Days
Continuous
 
09-Dec-25 09:00 19-Dec-25 17:00 BCH Outage 5L52 (BPA Custer - BCH Ingledow) make emergent glass replacement on the circuit 10.33 Days
Continuous
AB-BC
09-Dec-25 09:00 10-Dec-25 17:00 ALTALINK TE 1201L (520s Bennett - BCH Cranbrook) CBK 5L94 PYPN and SYPN out of service 1.33 Days
Continuous
 
09-Dec-25 09:30 09-Dec-25 16:30 ALTALINK TE 244s Protection & Control (244s Bowmanton) DSP card replacement on the B240B1 B87/240B1 URB30, B240B2 B87/240B2 URB30 relays 7 Hours
Daily
 
09-Dec-25 10:00 09-Dec-25 18:00 SUNCOR TE Suncor RTU/SCADA (Suncor) baseplant SDC failover to backup SDC (BCC) 2025
, include the failover to backup generator
8 Hours
Continuous
 
09-Dec-25 11:00 09-Dec-25 16:00 ALTALINK, ATCO Outage 830L (562s Cypress - 840s McNeill Station), 840s 901T (840s McNeill Station), 840s 701 (840s McNeill Station), 840s 703 (840s McNeill Station), 840s 701T (840s McNeill Station), 840s 702C (840s McNeill Station), 840s 703C (840s McNeill Station), 840S 7L830D1 (840s McNeill Station), 562s 830 (562s Cypress) emergency outage - bleed 901T 63A gas detector relay 5 Hours
Continuous
AB-SK
09-Dec-25 12:30 09-Dec-25 17:30 ALTALINK Outage 870L (262s Rocky Mountain House - 263s Strachan), 263s 870E (263s Strachan), 262s 870W (262s Rocky Mountain House) alarm splitting/wiring modifications - ACC visibility project 5 Hours
Daily
 
09-Dec-25 13:00 09-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-11) transfer of SCADA from JMUX to JPAX at substations in Ring 2 3 Hours
Continuous
 
09-Dec-25 17:00 02-Feb-26 11:00 ALTALINK Outage 714L (397s Benbow – 1117s South Kaybob) Complete work on breaker and energize 397s714. 54.75 Days
Continuous
 
10-Dec-25 07:00 10-Dec-25 17:00 ATCO IO 710s 702 (710s Vermilion), 7L130 (705s Kitscoty - 710s Vermilion) perform test and operate on Breaker 702 to test new re-trip outputs from relays 10 Hours
Continuous
 
10-Dec-25 07:00 11-Dec-25 16:00 ATCO Outage 7L130 (705s Kitscoty - 710s Vermilion), 710s 702 (710s Vermilion), 705s 704 (705s Kitscoty) conductor inspection 1.38 Days
Continuous
 
10-Dec-25 07:30 10-Dec-25 12:30 ALTALINK Outage 263s 652 (263s Strachan) alarm splitting and wiring modifications for ACC visibility project 5 Hours
Daily
 
10-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 852s RTU/SCADA (852s Round Hill), AltaLink Telecom Equipment MPLS upgrade 1.38 Days
Continuous
 
10-Dec-25 08:00 10-Dec-25 17:00 ALTALINK TE 13s Protection & Control (13s Deerland) standard relay maintenance 9 Hours
Daily
 
10-Dec-25 08:00 10-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 58s RTU/SCADA (58s Edson), 58s Protection & Control (58s Edson) update MPLS node 9 Hours
Daily
 
10-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 77s Protection & Control (77s Sagitawah) standard relay maintenance 1.38 Days
Daily
 
10-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 77s RTU/SCADA (77s Sagitawah) firmware update 1.38 Days
Daily
 
10-Dec-25 08:00 10-Dec-25 17:00 ALTALINK TE 142s C1 (142s Magcan) removing protections one at a time for maintenance. 9 Hours
Daily
 
10-Dec-25 08:00 10-Dec-25 16:00 ENMAX Outage 15.62L (SS-15 - SS-16) relay logic correction at 15sub 16sub 8 Hours
Continuous
 
10-Dec-25 08:00 10-Dec-25 16:00 ENMAX Outage 12.2TR (SS-12) test fit new spare breaker in 12BB8-12.2TR cell 8 Hours
Continuous
 
10-Dec-25 08:00 10-Dec-25 16:00 ENMAX TE Protection & Control (SS-32) 32PT138-Z32 secondary fuse outage, 32sub construction and panel cutover 8 Hours
Continuous
 
10-Dec-25 08:30 10-Dec-25 10:30 ALTALINK TE 498s Protection & Control (498s Tilley) dsp card replacement on the following relay(s): T1 B87/50/51/51NN/T1 2 Hours
Daily
 
10-Dec-25 08:30 10-Dec-25 12:00 ENMAX TE RTU/SCADA (SS-10) transfer of SCADA from JMUX to JPAX at substations in ring 2 3.5 Hours
Continuous
 
10-Dec-25 08:30 10-Dec-25 16:30 ALTALINK TE 89s Protection & Control (89s Ellerslie) DSP card replacements 8 Hours
Daily
 
10-Dec-25 09:00 10-Dec-25 17:00 ATCO TE ATCO Telecom Equipment, 706s RTU/SCADA (706s Irish Creek) LOW BES firewall install
8 Hours
Continuous
 
10-Dec-25 09:00 10-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment radio maintenance 8 Hours
Daily
 
10-Dec-25 09:30 10-Dec-25 17:30 ATCO Outage 7L22 (790s Poplar Hill - 7L88 tap), 790s 702 (790s Poplar Hill) 702CT oil leak repairs 8 Hours
Continuous
 
10-Dec-25 09:30 10-Dec-25 15:30 ATCO TE 755s Protection & Control (755s Cordel), 755s RTU/SCADA (755s Cordel) update password 755s 6 Hours
Continuous
 
10-Dec-25 10:00 10-Dec-25 16:00 ATCO Outage 700s 705C (700s Bonnyville) replace RTXP test switch for 87V/705C @ 700S 6 Hours
Continuous
 
10-Dec-25 11:30 10-Dec-25 16:30 ALTALINK TE 132s Protection & Control (132s Ware Junction) dsp card replacement on the following relay(s): B240B2 A87/240B2 URB30, B240B1 A87/240B1 URB30 5 Hours
Daily
 
10-Dec-25 13:00 10-Dec-25 16:00 ENMAX TE RTU/SCADA (SS-22) Transfer of SCADA from JMUX to JPAX at Substations in Ring 2 3 Hours
Continuous
 
11-Dec-25 07:00 11-Dec-25 18:00 ENMAX TE Protection & Control (SS-10) 10.2TR 'A' & 'B' Protection Outage. Trip testing 10BA8-10.1TR, 10BB8-10.1TR, 10B138-832. Back-up protection fault clearing time 5.5 cycles. 11 Hours
Continuous
 
11-Dec-25 07:00 12-Dec-25 17:00 EPCOR Outage T1 (Woodcroft), W721 (Woodcroft), W722 (Woodcroft), WDS3 (Woodcroft) woodcroft: tx1 zone, wab1 repair 1.42 Days
Continuous
 
11-Dec-25 07:30 11-Dec-25 12:30 ALTALINK Outage 205s 352 (205s Castle Rock Ridge) acc visibility scada upgrade - alarm splitting + wiring modifications 5 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 445s RTU/SCADA (445s Elk River) restore remote access server access to radio, investigate issues with low receive levels 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 10:30 ALTALINK Outage 63s T3 (63s Red Deer), 63s 26 (63s Red Deer) 63s26 Gas top up to eliminate nuisance alarming 2.5 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 378s Protection & Control (378s Shell Caroline) dps card replacement/minor, firmware update on the following line protection: 848L B21/L1 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 356s RTU/SCADA (356s Milo) cip compliance to update fw on LAN-PS3 and PS4 SEL3610, firmware to go from R203-R211v0 9 Hours
Daily
 
11-Dec-25 08:00 14-Dec-25 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move 7L46 str 158 3.33 Days
Continuous
 
11-Dec-25 08:00 14-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 3.33 Days
Continuous
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 395s Protection & Control (395s North Holden) standard relay maintenance 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment 946s mpls node update, affects RAS 134 B protection 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 277s RTU/SCADA (277s Hayter) rtu database update 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE 277s Protection & Control (277s Hayter) standard relay maintenance 9 Hours
Daily
 
11-Dec-25 08:00 11-Dec-25 17:00 ALTALINK TE AltaLink Telecom Equipment complete mlps upgrade 9 Hours
Daily
 
11-Dec-25 09:00 11-Dec-25 16:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) trip testing 10BA8-10.1TR, 10BB8-10.1TR, 10B138-832 7 Hours
Daily
 
11-Dec-25 09:00 11-Dec-25 16:00 ATCO Outage 700s 706C (700s Bonnyville), 700s 706 (700s Bonnyville) replace rtxp test switch for 87V/705C @ 700S 7 Hours
Continuous
 
11-Dec-25 09:00 12-Dec-25 17:00 BCH TE 5L92 (BCH Cranbrook - BCH Selkirk), 2L294 (BCH A. A. Lambert - BCH Cranbrook), 5L94 (BCH Cranbrook - 102s Langdon) maintenance 1.33 Days
Continuous
 
11-Dec-25 09:00 12-Dec-25 17:00 ALTALINK IO 1201L (520s Bennett - BCH Cranbrook) CBK 5L94 PYPN & SYPN OOS one at a time. 1.33 Days
Continuous
 
11-Dec-25 10:00 11-Dec-25 17:30 ATCO TE 813s RTU/SCADA (813s Little Smoky) replace hmi dvi kvm switch. rtu / smp may be required to be rebooted 7.5 Hours
Continuous
 
11-Dec-25 10:00 11-Dec-25 16:00 ALTALINK TE 510s Protection & Control (510s Sunnybrook) take the HVDC link to Stopped state, so the pump for DIW 1 can be reconnected to the system 6 Hours
Daily
 
11-Dec-25 12:31 11-Dec-25 17:30 ALTALINK Outage 205s 452 (205s Castle Rock Ridge) acc visibility scada upgrade - alarm splitting + wiring modifications 4.98 Hours
Continuous
 
11-Dec-25 14:00 11-Dec-25 18:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 10.1TR (SS-10), Protection & Control (SS-10), 10MD138-10.1TR (SS-10) Trip testing 10BA8-10.1TR, 10BB8-10.1TR, 10B138-832 4 Hours
Continuous
 
12-Dec-25 07:00 12-Dec-25 17:00 EPCOR Outage EP 511s V724 (EP 511s Victoria) Victoria: V724, Switching School Training 10 Hours
Continuous
 
12-Dec-25 07:30 12-Dec-25 12:30 ALTALINK Outage 205s 152 (205s Castle Rock Ridge) ACC Visibility SCADA upgrade - alarm splitting + wiring modifications 5 Hours
Daily
 
12-Dec-25 08:00 12-Dec-25 16:00 ENMAX Outage 15.60L (SS-15 - SS-21) 15.60L SEL-311L ASW Logic Correction 15 sub 8 Hours
Continuous
 

Prepared On:   2025-12-03   16:44:46

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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