Alberta Electric System Operator
System Co-ordination Plan
2026-01-08 to 2026-01-16
Approved Outages

Previous Version
Download CSV

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 13-Jan-26 08:29 ALTALINK Outage 377s 473C (377s AML Hardisty) forced outage 308.4 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 27-Feb-26 17:00 EPCOR TE Protection & Control (Woodcroft) Woodcroft: protection blocking for merging unit and protection upgrade. 333.46 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-Mar-26 16:30 ALTALINK Outage 263s C1 (263s Strachan) forced outage 252.33 Days
Continuous		  
25-Jul-25 17:01 17-Apr-26 17:00 EPCOR Outage T2 (EP Riverview) bushing test failure (found during OE110184) 266 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		  
02-Sep-25 08:00 14-Jan-26 16:00 ENMAX Outage 38.1C (SS-38) capacitor bank switcher replacement 134.38 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		  
01-Nov-25 12:00 01-Feb-26 18:00 ALTALINK Outage AML 511s ACF12 (AML 511s Crossings) forced outage 92.29 Days
Continuous		  
21-Nov-25 08:00 16-Jan-26 16:00 ENMAX Outage 38.3TR (SS-38) 38.3TR secondary cable replacement 56.33 Days
Continuous		  
25-Nov-25 17:46 30-Jan-26 18:00 ATCO Outage 876s 901T (876s Brintnell) forced outage oil leaking 66.01 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		  
09-Dec-25 17:00 02-Feb-26 11:00 ALTALINK IO 714L (397s Benbow – 1117s South Kaybob), 397s 714 (397s Benbow) complete work on breaker and energize 397s 714 54.75 Days
Continuous		  
12-Dec-25 01:30 09-Jan-26 18:00 ALTALINK Outage 310p T30 (310p Sundance) forced outage 28.69 Days
Continuous		  
17-Dec-25 07:30 16-Jan-26 17:30 ALTALINK Outage 58s C1 (58s Edson) urgent repair – replace failed cap, remove reactors until new reactor beams area available to reinstall 30.42 Days
Continuous		  
04-Jan-26 08:00 31-Mar-26 16:00 SUNCOR Outage 29EDD-34 260kV Bus 29PP-45 (29EDD-34), 29EDD-34 29-952-113 (29EDD-34) urgent repairs on 29PT-224 at 29EDD34 on 29PP-45 bus 86.29 Days
Continuous		  
05-Jan-26 07:00 08-Jan-26 17:00 ATCO TE 710s Protection & Control (710s Vermilion) change and test relay settings 3.42 Days
Continuous		  
05-Jan-26 08:00 08-Mar-26 16:00 ENMAX Outage 1.80L (SS-1 - SS-28) 1 sub transmission line cut over 62.29 Days
Continuous		  
05-Jan-26 08:00 08-Mar-26 16:00 ENMAX Outage 1.81L (SS-1 - SS-20) 1 sub transmission line cut over 62.29 Days
Continuous		  
05-Jan-26 08:00 15-Jan-26 16:00 ATCO Outage 7L48 (794s Valleyview - 7LA48 tap), 794s 703 (794s Valleyview) pole and cross arm replacement from T&T 10.33 Days
Continuous		  
05-Jan-26 08:00 09-Jan-26 17:00 ALTALINK TE 356s Protection & Control (356s Milo) DLR project - protection outages required to make metering configuration changes 4.38 Days
Daily		  
05-Jan-26 08:00 09-Jan-26 17:00 ALTALINK TE 356s RTU/SCADA (356s Milo) DLR project - update RTU for RAS175 protection changes 4.38 Days
Daily		  
05-Jan-26 10:00 12-Jan-26 12:00 ATCO Outage 9L40 (732s Mitsue - 809s Louise Creek) replace 4 damaged poles 7.08 Days
Continuous		  
05-Jan-26 11:00 09-Jan-26 17:30 ATCO TE 735s Protection & Control (735s Swan River) relay testing on 50BF/601, 87TA/601T, 87B/600BS3, 21B/6L97, 21B/6L96, 50BF/602, 50BF/604, 50BF/603 4.27 Days
Continuous		  
06-Jan-26 08:00 09-Jan-26 17:00 ATCO Outage 732s 902T (732s Mitsue), 732s 503R (732s Mitsue) protection upgrade 3.38 Days
Continuous		  
06-Jan-26 08:00 08-Jan-26 17:00 ALTALINK TE 38s Protection & Control (38s East Edmonton) standard relay maintenance 2.38 Days
Daily		  
06-Jan-26 08:00 08-Jan-26 17:00 ALTALINK TE 89s Protection & Control (89s Ellerslie) standard relay maintenance 2.38 Days
Daily		  
06-Jan-26 08:30 08-Jan-26 17:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) relay maintenance 2.35 Days
Daily		  
06-Jan-26 19:46 09-Jan-26 18:00 ATCO Outage 840s McNeill Station forced outage 2.93 Days
Continuous		 AB-SK
07-Jan-26 07:00 13-Jan-26 17:30 ALTALINK RB 799L (235s Entwistle - 443s South Mayerthorpe), 799L (77s Sagitawah - 443s South Mayerthorpe) proximity for 799L rebuild str 888A–909 (section D) 6.44 Days
Daily		  
07-Jan-26 08:00 20-Jan-26 18:00 ALTALINK Outage 931L (28s West Brooks - 132s Ware Junction) install steel self-supporting structure as part of the 1075L storm restoration 13.42 Days
Continuous		  
07-Jan-26 08:00 08-Jan-26 16:00 ENMAX, ALTALINK Outage 35.81L (42s Sarcee - SS-35), 35B138-81 (SS-35), 42s 35 (42s Sarcee), 35MD138-81 (SS-35), 35MD138-83 (SS-35), 35MD138-35.81 (SS-35) maintenance - 35MD138-35.81, 35MD138-83, 35MD138-81, SW81 1.33 Days
Continuous		  
07-Jan-26 08:00 08-Jan-26 16:00 ALTALINK TE 65s RTU/SCADA (65s High River) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily		  
07-Jan-26 08:00 08-Jan-26 16:00 ALTALINK IO 42s 35 (42s Sarcee) maintenance - 35MD138-35.81, 35MD138-83, 35MD138-81, SW81 1.33 Days
Daily		  
07-Jan-26 08:00 10-Jan-26 16:00 ATCO RB 7L45 (798s Bridge Creek - 845s Big Mountain), 7L45 (798s Bridge Creek - 813s Little Smoky) high load move on7L45 str 158 3.33 Days
Continuous		  
07-Jan-26 08:00 10-Jan-26 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move on7L46 str 158 3.33 Days
Continuous		  
08-Jan-26 07:00 08-Jan-26 17:00 ALTALINK TE 648s RTU/SCADA (648s Metiskow) RTU alarming update 10 Hours
Daily		  
08-Jan-26 08:00 08-Jan-26 17:00 ALTALINK TE 504s RTU/SCADA (504s Queenstown) RTU outrage to replace Ronan annunciator 9 Hours
Daily		  
08-Jan-26 08:00 19-Jan-26 16:00 Syncrude Outage 815 (Syncrude Mildred Lake), 816 (Syncrude Mildred Lake) repair 72 kV pothead in plant 31 switchyard 11.33 Days
Continuous		  
08-Jan-26 08:00 08-Jan-26 17:00 ALTALINK TE 42s Protection & Control (42s Sarcee) PRC maintenance on T1 S59-T1/TERT, C3 B50/51N/27/59/60/60N/C3 , C2 B50/51N/27/59/60/60N/C2 9 Hours
Daily		  
08-Jan-26 08:00 09-Jan-26 16:00 ALTALINK TE 245s RTU/SCADA (245s Seebe) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily		  
08-Jan-26 08:00 08-Jan-26 16:00 ENMAX Outage 5.1TR (SS-5) relay protection test, lockouts, tap changer reversing switch check 8 Hours
Continuous		  
08-Jan-26 08:00 08-Jan-26 16:00 ALTALINK TE 434s RTU/SCADA (434s Stony Plain) split VLAN, replace firewall 8 Hours
Daily		  
08-Jan-26 08:00 08-Jan-26 17:00 ALTALINK TE 504s Protection & Control (504s Queenstown) urgent -prot outages required on 853L(s853E) URD60, 853L(s853E) SEL311C relays to complete alarm path verifications to Ronan annunciator after replacement 9 Hours
Daily		  
08-Jan-26 08:30 08-Jan-26 12:00 ALTALINK TE 412s Protection & Control (412s Shell Eagle Creek) remove under frequency relays for maintenance 3.5 Hours
Daily		  
08-Jan-26 09:00 08-Jan-26 11:00 ATCO TE ATCO Telecom Equipment, 930s RTU/SCADA (930s Arcenciel) upgrading SAR OS TO V21 2 Hours
Continuous		  
08-Jan-26 09:00 09-Jan-26 17:00 ATCO TE ATCO Telecom Equipment, 718s Protection & Control (718s Parsons Creek) telecom upgrade 1.33 Days
Continuous		  
08-Jan-26 09:00 08-Jan-26 09:30 ALTALINK Outage 719L (263s Strachan - 719AL tap), 719L (719AL tap - 719BL tap), 764L (304s Shell Limestone - 581s Amoco Ricinus), 719AL (581s Amoco Ricinus - 719L tap), 719BL (634s Shell Raven River - 719L tap), 304s T1 (304s Shell Limestone), 304s T2 (304s Shell Limestone), 581s T1 (581s Amoco Ricinus), 634s T1 (634s Shell Raven River), 378s 719N (378s Shell Caroline) switching to open 719L259C 30 Mins
Continuous		  
08-Jan-26 09:00 08-Jan-26 11:00 ATCO Outage 7L93 (828s Sulphur Point - 930s Arcenciel) 7L93 needs to be open ended during telecom outage 2 Hours
Continuous		  
08-Jan-26 09:31 25-Jan-26 18:00 ALTALINK Outage 719L (263s Strachan - 719AL tap), 263s 719 (263s Strachan) component replacement/maintenance str 260-287 17.35 Days
Continuous		  
08-Jan-26 10:00 08-Jan-26 15:00 ATCO Outage 7L53 (700s Bonnyville - 7LA53 tap), 700s 702 (700s Bonnyville) complete work on 7L53-620 5 Hours
Continuous		  
08-Jan-26 12:30 08-Jan-26 17:00 ALTALINK TE 531s Protection & Control (531s Shell Schrader Creek) remove under frequency relays for maintenance 4.5 Hours
Daily		  
09-Jan-26 08:00 09-Jan-26 16:00 ENMAX Outage 5.6TR (SS-5) relay protection test lockouts, tap changer reversing switch check 8 Hours
Continuous		  
12-Jan-26 07:00 15-Jan-26 17:00 ALTALINK TE 74s Protection & Control (74s Janet) PRC relay maintenance 3.42 Days
Daily		  
12-Jan-26 07:00 18-Jan-26 18:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) stringing activities over 7L16 for CETO project 6.46 Days
Continuous		  
12-Jan-26 07:00 03-Apr-26 17:00 EPCOR TE 330p Protection & Control (330p Genesee) protect blocking, annual relay maintenance and password changes 81.38 Days
Continuous		  
12-Jan-26 07:00 03-Apr-26 17:00 EPCOR TE Protection & Control (Rossdale) protection blocking, relay maintenance 81.38 Days
Continuous		  
12-Jan-26 07:00 03-Apr-26 17:00 EPCOR TE 987s Protection & Control (987s Clover Bar) protection blocking, relay maintenance 81.38 Days
Continuous		  
12-Jan-26 07:00 14-Jan-26 17:00 EPCOR Outage T1 (Namao), N721 (Namao), N722 (Namao) wiring changes for panel removal 2.42 Days
Continuous		  
12-Jan-26 07:15 15-Jan-26 17:45 ALTALINK Outage 314L (207s Pinedale - 228s T.M.P.L. Niton) component replacement str 8–97 3.44 Days
Continuous		  
12-Jan-26 07:30 16-Jan-26 17:30 ALTALINK RB 443L (55s Olds - 214s Innisfail) structure replacements from 443L63 – 443L137 4.42 Days
Daily		  
12-Jan-26 08:00 30-Jan-26 16:00 ENMAX Outage 32.3TR (SS-32) panel cut-over 18.33 Days
Continuous		  
12-Jan-26 08:00 13-Jan-26 16:00 ENMAX Outage 33.84L (SS-33 - SS-43), 43.2TR (SS-43), 33B138-33.84 (SS-33), 43B138-33.84 (SS-43), 43MD138-43.2TR (SS-43) maintenance 1.33 Days
Continuous		  
12-Jan-26 08:00 13-Jan-26 17:00 ALTALINK TE 106s RTU/SCADA (106s Paddle River) supervisory outages required for emergency HMI upgrade 1.38 Days
Daily		  
12-Jan-26 08:00 16-Jan-26 17:00 ALTALINK TE 267s RTU/SCADA (267s Killarney Lake) RTU database updates 4.38 Days
Daily		  
12-Jan-26 08:00 15-Jan-26 17:00 ALTALINK TE 251s Protection & Control (251s Whitla) 264s352 CT replacement requires relay outages at 251s 3.38 Days
Daily		  
12-Jan-26 08:30 16-Jan-26 17:00 ATCO TE 732s Protection & Control (732s Mitsue) troubleshoot and modify settings for Digsi remote access 4.35 Days
Continuous		  
12-Jan-26 09:00 21-Jan-26 15:00 ATCO Outage 9L57 (939s Livock - 960s Birchwood Creek) 9L57 Line to Ground Clearance Mitigation 9.25 Days
Continuous		  
12-Jan-26 09:00 12-Jan-26 11:00 ATCO TE 844s RTU/SCADA (844s AEC Mill), ATCO Telecom Equipment upgrade AEC mill SAR OS to V21, then rebuild TPRCP114 and TPRCP115 2 Hours
Continuous		  
12-Jan-26 10:00 15-Jan-26 17:00 ALTALINK TE 198s Protection & Control (198s Blackfalds) PRC maintenance 3.29 Days
Daily		  
12-Jan-26 10:00 14-Jan-26 17:00 ALTALINK TE 159s Protection & Control (159s Colinton) standard relay maintenance 2.29 Days
Daily		  
12-Jan-26 10:00 15-Jan-26 17:00 ALTALINK TE 39s Protection & Control (39s Bickerdike) standard relay maintenance 3.29 Days
Daily		  
12-Jan-26 10:00 14-Jan-26 17:00 ALTALINK TE 61s Protection & Control (61s Lodgepole) standard relay maintenance 2.29 Days
Daily		  
12-Jan-26 10:00 15-Jan-26 17:00 ALTALINK TE 121s Protection & Control (121s Brooks) outage on 138kv bus protection to remove/restore CT contribution 3.29 Days
Daily		  
12-Jan-26 10:00 16-Jan-26 16:00 ATCO TE 925s Protection & Control (925s Green Stocking) relay testing 4.25 Days
Continuous		  
12-Jan-26 10:00 15-Jan-26 15:00 ALTALINK TE 264s Protection & Control (264s Elkwater) 264s352 CT replacement 3.21 Days
Daily		  
12-Jan-26 13:00 12-Jan-26 17:00 ALTALINK TE AltaLink Telecom Equipment software update to correct issues with radio hop 4 Hours
Daily		  
12-Jan-26 13:00 15-Jan-26 17:00 ALTALINK Outage 827L (28s West Brooks - 121s Brooks), 121s 827W (121s Brooks) replace leaking CT 3.17 Days
Continuous		  
12-Jan-26 13:00 15-Jan-26 17:00 ALTALINK Outage 264s 240kV Bus 2 (264s Elkwater), 264s 352 (264s Elkwater) urgent CT replacement 3.17 Days
Continuous		  
13-Jan-26 07:00 13-Jan-26 17:00 EPCOR Outage EP 511s V724 (EP 511s Victoria) Victoria: V724 10 Hours
Continuous		  
13-Jan-26 07:00 13-Jan-26 18:00 ALTALINK Outage 799L (77s Sagitawah - 443s South Mayerthorpe) Urgent repair of broken strands on the conductor at 681 and a split cross-arm on 663. 11 Hours
Daily		  
13-Jan-26 08:00 13-Jan-26 17:00 ALTALINK TE AltaLink Telecom Equipment 9393R repair radio facing 9037R 9 Hours
Daily		  
13-Jan-26 08:00 14-Jan-26 16:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily		  
13-Jan-26 08:00 13-Jan-26 17:00 ALTALINK TE AltaLink Telecom Equipment software update to correct issues with radio hop 9 Hours
Daily		  
13-Jan-26 08:00 13-Jan-26 17:00 ALTALINK TE 62s RTU/SCADA (62s Brazeau Plant) split the existing SCADA VLAN from 1 to 1 and 2 9 Hours
Daily		  
13-Jan-26 08:30 13-Jan-26 17:00 ALTALINK TE 370s Protection & Control (370s North Lethbridge) removing 370s207X & 370s1552 relays one at a time for maintenance and removing 940L RAS Relays from service one at a time 8.5 Hours
Continuous		  
13-Jan-26 08:30 14-Jan-26 17:00 ALTALINK Outage 377s 473C (377s AML Hardisty) investigate and return mobile cap bank to service at 377s as per AESO/analyst request
 1.35 Days
Continuous		  
13-Jan-26 09:00 13-Jan-26 11:00 ATCO TE ATCO Telecom Equipment, 2015s RTU/SCADA (2015s Yeo), 960s RTU/SCADA (960s Birchwood Creek) NET 1 and NET 11 SAR OS upgrade

 2 Hours
Continuous		  
13-Jan-26 09:00 13-Jan-26 17:00 ATCO TE ATCO Telecom Equipment, 898s Heart Lake RTU/SCADA Heart Lake_S-Telecom- Med BES firewall install 8 Hours
Continuous		  
13-Jan-26 09:00 13-Jan-26 17:00 ALTALINK TE AltaLink Telecom Equipment NOC provision server issue with radio, resolve with access to the radio on site 8 Hours
Daily		  
13-Jan-26 09:00 14-Jan-26 17:30 ATCO TE 7LA128 (572s Highland - 7L128 tap) 21B/7LA128 protection settings updating for time sync issues 1.35 Days
Continuous		  
13-Jan-26 10:00 13-Jan-26 12:00 ENMAX Outage 38.1TR (SS-38) capacitor bank switcher replacement, commissioning and wiring changes 2 Hours
Continuous		  
13-Jan-26 12:30 13-Jan-26 14:30 ENMAX Outage 38.2TR (SS-38) capacitor bank switcher replacement, commissioning and wiring changes 2 Hours
Continuous		  
14-Jan-26 07:00 14-Jan-26 17:00 EPCOR Outage EP 511s V722 (EP 511s Victoria) victoria v722, switching school recertification 10 Hours
Continuous		  
14-Jan-26 07:00 31-Jan-26 18:00 ALTALINK Outage 799L (235s Entwistle - 443s South Mayerthorpe), 235s 799N (235s Entwistle) 799L rebuild between str 888A-909 (section d) 17.46 Days
Continuous		  
14-Jan-26 08:00 15-Jan-26 16:00 ALTALINK TE 321s RTU/SCADA (321s Al Rothbauer) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily		  
14-Jan-26 08:00 14-Jan-26 17:00 ALTALINK TE AltaLink Telecom Equipment, 431s RTU/SCADA (431s Hussar) communication alarm 9 Hours
Daily		  
14-Jan-26 08:00 14-Jan-26 12:00 ATCO TE 970s Protection & Control (970s Bourque) adjust 7L574 line protection zone 2 delay to 0.15s for the duration of the telecom outages (1-00507478). 4 Hours
Continuous		  
14-Jan-26 08:00 15-Jan-26 16:00 ENMAX Outage 9.83L (SS-9 - SS-43), 43.1TR (SS-43) HV SW Maintenance 43SW81, 43SW82, 43SW83, MD-43.1TR.  Tap Changer Reversing Switch Check - 43.1-X-TC, 43.1-Y-TC 1.33 Days
Continuous		  
14-Jan-26 08:00 15-Jan-26 16:00 ATCO RB 7L45 (798s Bridge Creek - 845s Big Mountain), 7L45 (798s Bridge Creek - 813s Little Smoky) high load move on7L45 str 158 1.33 Days
Continuous		  
14-Jan-26 08:00 15-Jan-26 16:00 ATCO RB 7L46 (813s Little Smoky - 845s Big Mountain) high load move on7L46 str 158 1.33 Days
Continuous		  
14-Jan-26 08:00 14-Jan-26 17:00 ATCO TE 2075s Protection & Control (2075s Newell) replace failed SEL-487B relay 9 Hours
Continuous		  
14-Jan-26 08:00 14-Jan-26 10:00 ENMAX Outage 37.81L (SS-37 - SS-38), 38.2TR (SS-38), 38.3TR (SS-38), 38B138-37.81 (SS-38), 38.1C (SS-38), SW83 (SS-38) capacitor bank switcher replacement sub 38, bus outage required for 38B138-38.1cap bank initial energization 2 Hours
Continuous		  
14-Jan-26 08:00 15-Jan-26 17:00 ALTALINK TE 267s Protection & Control (267s Killarney Lake) trip testing on 25kV breakers 1.38 Days
Daily		  
14-Jan-26 09:00 14-Jan-26 11:00 ATCO TE 970s RTU/SCADA (970s Bourque), ATCO Telecom Equipment impact to the following traffic for up to 1 hr:
970s SUB LOW BES SCADA
7L146 A&B - BOURQUE / BONNYVILLE
7L574, 7L35 A&B - BOURQUE / PRIMROSE
7L574. 7L35 B - BOURQUE / WOLF LAKE
7L574 A - BOURQUE / WOLF LAKE SPS1161 - LEMING LAKE / ETHEL LAKE
7L91 A&B - LEMING LAKE / MARGUERITE LAKE
 2 Hours
Continuous		  
14-Jan-26 10:00 14-Jan-26 12:00 ALTALINK, TRANSALTA TE 528s RTU/SCADA (528s Blue Trail Wind Farm), AltaLink Telecom Equipment resolve with access to the radio on site 2 Hours
Continuous		  
14-Jan-26 10:00 15-Jan-26 17:30 ATCO TE 959s Protection & Control (959s Lanfine), 959s RTU/SCADA (959s Lanfine) 87BA-B 700BS2 SIEMENS 7UT635 31.5 Hours
Continuous		  
14-Jan-26 23:00 15-Jan-26 03:00 ALTALINK Outage 62s T1 (62s Brazeau Plant) maintenance 4 Hours
Continuous		  
15-Jan-26 03:00 15-Jan-26 07:00 ALTALINK Outage 62s T2 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
15-Jan-26 07:00 15-Jan-26 17:00 EPCOR Outage EP 511s V723 (EP 511s Victoria) V723 switching school recertification 10 Hours
Continuous		  
15-Jan-26 08:00 16-Jan-26 16:00 ALTALINK TE 895s RTU/SCADA (895s Suffield) split the existing SCADA VLAN from 1 to 1 and 2 1.33 Days
Daily		  
15-Jan-26 08:00 15-Jan-26 15:00 ALTALINK TE AltaLink Telecom Equipment NCC card failure, replace card and upgrade software version to resolve errors 7 Hours
Daily		  
15-Jan-26 08:00 15-Jan-26 17:00 ALTALINK TE 294s RTU/SCADA (294s Brazeau Outletworks) replace firewall, split VLAN 9 Hours
Daily		  
15-Jan-26 08:30 15-Jan-26 17:00 ALTALINK TE 409s RTU/SCADA (409s Shell Scotford) update config for deficiency cleanup 8.5 Hours
Daily		  
15-Jan-26 12:00 15-Jan-26 15:00 ALTALINK Outage 267s T1 (267s Killarney Lake) replace line side risers on 267s2054X and energize new 267s2054X breaker from 267s3 3 Hours
Daily		  
16-Jan-26 07:00 17-Jan-26 17:00 EPCOR Outage 72VN21 (EP 511s Victoria - Namao), N725 (Namao) wiring changes for mimic panel removal 1.42 Days
Continuous		  
16-Jan-26 08:00 16-Jan-26 16:00 ALTALINK TE 454s RTU/SCADA (454s Buck Lake) split VLAN, replace firewall 8 Hours
Daily		  
16-Jan-26 08:00 16-Jan-26 16:00 ENMAX Outage 13.2TR (SS-13) oil leaks, gas alarm - check/seal water leaks 8 Hours
Continuous		  
16-Jan-26 08:00 16-Jan-26 16:00 ENMAX Outage 5.5TR (SS-5) relay protection test, tap changer reversing switch check 8 Hours
Continuous		  
16-Jan-26 09:00 16-Jan-26 15:00 ATCO TE 800s RTU/SCADA (800s Friedenstal), 800s Protection & Control (800s Friedenstal) remove broken CT wire alarm and logic from the 21B/6L37 and station controller at 800S Friedenstal 6 Hours
Continuous		  

Prepared On:   2026-01-07   16:32:24

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.

© 2009 Alberta Electric System Operator. All rights reserved