Alberta Electric System Operator
System Co-ordination Plan
2026-09-10 to 2026-09-18
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
26-Jul-24 10:00 30-Jun-27 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency removal to replace failed 502R @834S 25,662 Hours
Continuous		  
20-Mar-25 08:00 30-Sep-26 17:00 ALTALINK Outage 256s C1 (256s Harmattan) forced outage 13,425 Hours
Continuous		  
25-Nov-25 17:46 18-Sep-26 18:00 ATCO Outage 876s 901T (876s Brintnell) forced outage oil leaking 7,127.23 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 17,528 Hours
Daily		  
04-Jan-26 08:00 16-Oct-26 20:00 SUNCOR Outage 29EDD-34 260kV Bus 29PP-45 (29EDD-34), 29EDD-34 29-952-113 (29EDD-34), 29EDD-34 29PS-216 (29EDD-34) urgent repairs on 29PT-224 at 29EDD34 on 29PP-45 bus 5,791 Hours
Continuous		  
21-Jan-26 08:00 30-Oct-26 16:00 ENMAX Outage 5.7TR (SS-5) 25kV switchgear replacement 6,775 Hours
Continuous		  
06-Mar-26 17:00 13-Nov-26 17:00 EPCOR Outage T1 (Woodcroft) woodcroft: TX1 LCR civil 6,048 Hours
Continuous		  
10-Mar-26 10:00 30-Nov-26 17:00 ATCO TE 743s RTU/SCADA (743s Sarah Lake) throughout the course of the project, different apparatus are being replaced, RTU will be blocked prior to download 6,368 Hours
Continuous		  
11-Mar-26 13:45 15-Sep-26 08:59 ALTALINK Outage 535s C1 (535s Joffre) breaker maintenance 4,507.23 Hours
Continuous		  
01-May-26 17:00 25-Nov-26 17:00 EPCOR Outage T1 (Meadowlark) T1 LCR civil work 4,993 Hours
Continuous		  
19-May-26 07:00 02-Oct-26 17:00 EPCOR TE 987s Protection & Control (987s Clover Bar) protection blocking - relay maintenance and bus differential upgrade project 2,434 Hours
Continuous		  
27-May-26 18:00 30-Sep-26 17:00 ALTALINK Outage 526s C1 (526s Buffalo Creek) forced outage 3,023 Hours
Daily		  
04-Jun-26 07:01 10-Feb-27 17:00 EPCOR Outage T1 (Rossdale) rossdale: TX1 lcr civil 6,034.98 Hours
Continuous		  
07-Jun-26 17:05 01-Oct-26 00:00 ACCIONA, ENBRIDGE, ICPCL Outage 139s C1 (139s Hillridge) forced outage 2,766.92 Hours
Continuous		  
08-Jun-26 07:00 04-Dec-26 17:00 EPCOR TE EP 511s Protection & Control (EP 511s Victoria) 72kV breaker fail protection blocking 2,626 Hours
Continuous		  
15-Jun-26 07:00 18-Dec-26 17:00 EPCOR TE 805s Protection & Control (805s Jasper) protection blocking, breaker replacement project 1,954 Hours
Continuous		  
19-Jun-26 17:00 03-Dec-27 17:00 EPCOR Outage EP 511s Victoria T3 (EP 511s Victoria) emergency outage due to degraded asset condition 12,769 Hours
Continuous		  
10-Jul-26 08:00 18-Nov-26 16:00 Syncrude Outage 815 (Syncrude Mildred Lake), 816 (Syncrude Mildred Lake) replace 72 kV underground feeder cables on west mine feeder 2,696 Hours
Continuous		  
14-Jul-26 00:00 30-Sep-26 00:00 ALTALINK Outage 151s C1 (151s Strathmore) forced outage 1,872 Hours
Continuous		  
14-Jul-26 08:00 22-Oct-26 17:00 ALTALINK Outage 287s 552 (287s Hazelwood) 287s552 must be open during 443L and 417L outage for the 214s AIS to work properly 1,905 Hours
Continuous		  
15-Jul-26 14:01 22-Oct-26 09:00 ALTALINK Outage 417L (55s Olds - 281s Johnson), 55s T1 (55s Olds), 55s T2 (55s Olds), 55s 417 (55S Olds), 287s 552 (287s Hazelwood), 55s 2 (55s Olds) mobile install at 55s for P_C major upgrade, repair/replace s80, s83, s84. salvage s51. 1,962.98 Hours
Continuous		  
20-Jul-26 07:00 31-Dec-26 17:00 EPCOR TE Protection & Control (Woodcroft) woodcroft: protection blocking for TX1 LCR, line protection testing, and repairs 3,947 Hours
Continuous		  
03-Aug-26 08:00 30-Oct-26 16:00 ALTALINK TE 55s RTU/SCADA (55s Olds) adding/testing new alarms & controls associated with the 55s P&C 2,120 Hours
Daily		  
04-Aug-26 07:03 17-Sep-26 17:00 ALTALINK Outage 869L (163s Amoco Empress - 204s Sandy Point), 204s T1 (204s Sandypoint), 163s 869W (163s Amoco Empress) customer maintenance work 777.95 Hours
Continuous		  
10-Aug-26 07:30 09-Oct-26 17:00 ALTALINK Outage 434s T3 (434s East Stony Plain) T3 transformer replacement 1,281.5 Hours
Continuous		  
13-Aug-26 16:31 24-Sep-26 17:00 ALTALINK Outage 71s T1 (71s Lamoureux) bushing issue 1,008.48 Hours
Continuous		  
17-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 89s Protection & Control (89s Ellerslie) MPLS TPR re-arrangements project: 908L (Ellerslie 89S -Petrolia E816s) relay testing and cutover 608 Hours
Continuous		  
17-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 37s Protection & Control (37s North Calder) 930L (North Calder 37S -Poundmaker EPCOR) relay testing and cutover 608 Hours
Continuous		  
17-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 367s Protection & Control (367s Harry Smith) 1139L (Harry Smith 367S -Riverview EPCOR) MPLS TPR re-arrangements project, EPCOR relay testing and cutover 608 Hours
Continuous		  
17-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 37s Protection & Control (37s North Calder) 920LE (North Calder 37S -E557s Castle Downs EPCOR) EPCOR relay testing and cutover 608 Hours
Continuous		  
17-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 71s Protection & Control (71s Lamoureux) 920LW (Lamoreux 71S -E557s Castle Downs EPCOR) MPLS TPR re-arrangements project, EPCOR relay testing and cutover 608 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 908L (89s Ellerslie - 816s Petrolia) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 1139L (367s Harry Smith - EP Riverview) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 930L (37s North Calder - Poundmaker) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 1045L (EP 805s Jasper - 1045AL tap) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 920L (71s Lamoureux - 557s Castle Downs) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
17-Aug-26 09:30 11-Sep-26 17:00 ALTALINK, EPCOR TE 920L (37s North Calder - 557s Castle Downs) protection blocking for MPLS cutovers and commissioning 607.5 Hours
Continuous		  
20-Aug-26 09:00 09-Oct-26 10:00 ALTALINK Outage 58s T1 (58s Edson) 58s T1 transformer replacement and containment install 1,201 Hours
Continuous		  
25-Aug-26 07:00 21-Sep-26 17:00 ATCO TE 743s Protection & Control (743s Sarah Lake) 21A/7L55 for relay testing and wiring, element will be out of service under GOI 2-81723 658 Hours
Continuous		  
25-Aug-26 08:00 21-Sep-26 17:00 ATCO TE 743s Protection & Control (743s Sarah Lake) 21B/7L55 for relay testing and wiring, element will be out of service under GOI 2-81723 657 Hours
Continuous		  
25-Aug-26 08:00 21-Sep-26 17:00 ATCO TE 743s Protection & Control (743s Sarah Lake) 86-50BF-1/700BS1, 94-50BF-1/700BS1 657 Hours
Continuous		  
25-Aug-26 08:00 21-Sep-26 17:00 ATCO TE 743s Protection & Control (743s Sarah Lake) 50BF/701 for relay testing 657 Hours
Continuous		  
26-Aug-26 12:00 21-Sep-26 11:00 ATCO Outage 743s 701 (743s Sarah Lake), 743s 701A (743s Sarah Lake), 743s 7L55D3 (743s Sarah Lake), 7L55 (743s Sarah Lake - 809s Louise Creek), 809s 705 (809s Louise Creek) 743s Sarah lake rebuild 623 Hours
Continuous		  
31-Aug-26 07:00 13-Sep-26 17:00 EPCOR, ALTALINK Outage 72LH8 (EP 803s Lambton - EP Hardisty), 72LS24 (EP 803s Lambton - Strathcona), EP 803s T3 (EP 803s Lambton), EP 803s L2403 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton), S724 (Strathcona), EP 803s LAB3 (EP 803s Lambton) breaker maintenance, drive pipe repair and T3 relay maintenance and zone doble 322 Hours
Continuous		  
31-Aug-26 07:00 17-Sep-26 17:00 ALTALINK Outage 869L (163s Amoco Empress - 204s Sandy Point), 204s T1 (204s Sandypoint), 163s 869W (163s Amoco Empress), 204s 869E (204s Sandy Point) 869L protection upgrades at 163s (iconic), replace 869L line protections at 204s, replace T1 meter 346 Hours
Continuous		  
31-Aug-26 07:00 19-Sep-26 17:00 ALTALINK, DOW RB 787L (166s Dow Chemical Fort Saskatchewan - 787AL tap), 787L (71s Lamoureux - 787AL tap) urgent repair - transmission line work 466 Hours
Daily		  
31-Aug-26 07:00 11-Sep-26 15:00 CMH Outage MH-50L (MHS-2 North Industrial - MHS-5 NE Crescent Heights), MHS-2 MH69-221 (MHS-2 North Industrial), MHS-5 MH69-510 (MHS-5 NE Crescent Heights) replace poles and perform line disconnect maintenance on the MH69-50L 272 Hours
Continuous		  
31-Aug-26 08:00 17-Sep-26 16:00 ALTALINK TE 204s RTU/SCADA (204s Sandy Point) RTU configuration updates for 869L - line protection and T1 meter replacement 416 Hours
Daily		  
31-Aug-26 08:00 10-Sep-26 15:00 CMH TE MH-15L (MHS-7 Brier Park - MHS-9 South Saskatchewan) maintenance on the LDR-15L-B 247 Hours
Continuous		  
31-Aug-26 08:00 17-Sep-26 16:00 ALTALINK TE 163s RTU/SCADA (163s Amoco Empress) SCADA configuration changes involving 869L protections 416 Hours
Daily		  
31-Aug-26 08:00 11-Sep-26 16:00 ALTALINK TE 163s Protection & Control (163s Amoco Empress) protection outages required for CVT2 distribution upgrade and circuit cutovers 272 Hours
Daily		  
31-Aug-26 13:00 06-Oct-26 07:30 ATCO TE 790s Protection & Control (790s Poplar Hill), 790s RTU/SCADA (790s Poplar Hill) wire new breaker 508, 508 feeder protection into the station RTU and 701T protection 858.5 Hours
Continuous		  
02-Sep-26 07:00 21-Oct-26 15:00 ALTALINK, TRANSALTA Outage 320p GT3 (320p Keephills) maintenance 1,184 Hours
Continuous		  
02-Sep-26 09:00 21-Sep-26 13:00 BCH Outage 5L96 (BCH Selkirk - BCH Vaseux Lake) maintenance, BC maintenance does not affect the Alberta ATC 460 Hours
Continuous		 AB-BC
03-Sep-26 08:00 12-Sep-26 16:00 ALTALINK TE 388s RTU/SCADA (388s Riverside) complete SCADA upgrade 224 Hours
Daily		  
04-Sep-26 07:30 12-Sep-26 09:29 ALTALINK Outage 77s 552 (77s Sagitawah) protection upgrade 77s552 193.98 Hours
Continuous		  
06-Sep-26 08:00 12-Sep-26 20:00 SUNCOR TE 29EDD-1 952-106 (29EDD-1 Millennium), 29EDD-1 952-103 (29EDD-1 Millennium), 29EDD-1 29EDD1s652 (29EDD-1 Millennium), 29EDD-1 29EDD1s352 (29EDD-1 Millennium), 29EDD-1 29EDD1s852 (29EDD-1 Millennium) prc 005 - relay test 156 Hours
Continuous		  
06-Sep-26 08:00 20-Sep-26 19:00 ATCO RB 13L50 (2029s Heathfield - 2075s Newell) installing SVDs from str 1-775, then 975-1387 347 Hours
Continuous		  
08-Sep-26 06:00 11-Sep-26 19:00 ALTALINK RB 610L (83s Taber - 336s Fincastle) install temporary understrung line, stringing wire, Fortis 83s15L is understrung on 610L 85 Hours
Daily		  
08-Sep-26 07:00 23-Oct-26 17:00 EPCOR Outage 805s T4 (805s Jasper), EP 805s J2405 (EP 805s Jasper), EP 805s J2406 (EP 805s Jasper), EP 805s JAB4 (EP 805s Jasper) replacement LCR Jasper J2406/JDS10 1,090 Hours
Continuous		  
08-Sep-26 07:00 04-Oct-26 17:00 EPCOR Outage 72KN23 (Kennedale - Namao) UGT oil degasification project 634 Hours
Continuous		  
08-Sep-26 07:00 12-Sep-26 17:00 EPCOR Outage 987s GT2 (987s Clover Bar), 987s CGB2 (987s Clover Bar) maintenance 106 Hours
Continuous		  
08-Sep-26 07:00 11-Sep-26 18:00 ALTALINK, BCH RB 1201L (520s Bennett - BCH Cranbrook) conductor inspection on str 21-22, 50-51, 187-188, 279-280 83 Hours
Continuous		 AB-BC
08-Sep-26 07:00 26-Sep-26 17:00 EPCOR Outage 72PM25 (Poundmaker - Meadowlark), T4 (Poundmaker), PM2402 (Poundmaker), PM2403 (Poundmaker), PM721 (Poundmaker), PMDS4 (Poundmaker), M726 (Meadowlark) doble Poundmaker TX4 130 Hours
Continuous		  
08-Sep-26 07:00 13-Sep-26 17:00 ALTALINK TE 77s RTU/SCADA (77s Sagitawah) RTU database update 130 Hours
Daily		  
08-Sep-26 07:00 18-Dec-26 17:00 EPCOR TE EP 803s Protection & Control (EP 803s Lambton) protection blocking, DFR upgrade cutovers and commissioning 2,435 Hours
Continuous		  
08-Sep-26 08:00 13-Nov-26 17:00 ALTALINK, REDDEER Outage 464L (87s Gaetz - 209s Timberlands), 209s 464E (209s Timberlands) P&C panel replacements, 138 kV bus and line arrestor testing, transformer testing 1,594 Hours
Continuous		  
08-Sep-26 08:00 19-Sep-26 16:00 Syncrude Outage Mildred T19 (Syncrude Mildred Lake), 1935 (Syncrude Mildred Lake) complete bus 19 6-year PM 320 Hours
Continuous		  
08-Sep-26 08:00 11-Sep-26 16:00 ATCO Outage 7L228 (845s Big Mountain - 7L20 tap), 2091s 7L228D3 (2091s Thornton) 7L228D2 line switch failure replacement, remove 7L228D2 and jumper out permanently, rename 7L228D3 to D2 80 Hours
Continuous		  
08-Sep-26 08:00 13-Sep-26 16:00 ATCO, CNRL Outage 75-PLH-903 (838s Horizon Mining - 842s Horizon Upgrading), 842s 75-1902 (842s Horizon Upgrading), 842s 75-1903 (842s Horizon Upgrading), 838s 75-BC-1911 (838s Horizon Mining), 838s 75-BC-1918 (838s Horizon Mining) 5YR PMs of breakers, disconnects, and protective relays 128 Hours
Continuous		  
08-Sep-26 08:00 11-Sep-26 16:00 ALTALINK TE 58s Protection & Control (58s Edson) protection outages on A87B/138-A,B,C and B138B B87/138B - settings changes and testing associated with T1 replacement 80 Hours
Daily		  
08-Sep-26 08:00 11-Sep-26 16:00 ALTALINK TE 388s Protection & Control (388s Riverside) setting change on A87/21/96/L1 and B21/96/L1 for SCADA upgrade 80 Hours
Daily		  
08-Sep-26 08:00 10-Sep-26 16:00 ALTALINK TE 123s Protection & Control (123s Banff) settings changes to facilitate mobile installation, add trip circuit from mobile to s551W 56 Hours
Daily		  
08-Sep-26 09:00 13-Nov-26 17:00 ALTALINK, REDDEER Outage 768L (209s Timberlands - 217s North Red Deer), 209s T1 (209s Timberlands), 217s 768 (217s North Red Deer), 209s 768W (209s Timberlands) P&C panel replacements, 138 kV bus and line arrestor testing, transformer testing 1,593 Hours
Continuous		  
08-Sep-26 09:30 21-Sep-26 17:30 ATCO Outage 766s 701T (766s Nevis) 2026 apparatus leak repairs - 701T bushing replacements at 766s Nevis, transformer maintenance
320 Hours
Continuous		  
08-Sep-26 09:30 05-Oct-26 12:00 ATCO Outage 7L170 (875s Algar - 2011s Dawes), 7L38 (875s Algar - 917s Horse River), 875s 701T (875s Algar), 875s 701 (875s Algar), 875s 702 (875s Algar), 875S 701TCS (875s Algar) replace 701TCS + SCADA / protection upgrade 650.5 Hours
Continuous		  
08-Sep-26 09:30 05-Oct-26 17:30 ATCO TE 875s Protection & Control (875s Algar) replace 701TCS and SCADA / protection upgrade
656 Hours
Continuous		  
08-Sep-26 09:30 05-Oct-26 17:30 ATCO TE 917s Protection & Control (917s Horse River) replace 701TCS and SCADA / protection upgrade at 875s 656 Hours
Continuous		  
08-Sep-26 09:30 05-Oct-26 17:30 ATCO TE 2011s Protection & Control (2011s Dawes) replace 701TCS and SCADA / protection upgrade at 875s 656 Hours
Continuous		  
08-Sep-26 10:00 10-Sep-26 15:00 ATCO Outage 754s 702C (754s Ksituan River) breaker testing and trip coil test 53 Hours
Continuous		  
08-Sep-26 10:30 10-Sep-26 15:30 ATCO, ALTALINK RB 199L (347s AML Fox Creek - 741s ATC Fox Creek) 14 red tag pole change program 53 Hours
Continuous		  
08-Sep-26 11:00 10-Sep-26 15:00 ATCO, ALTALINK RB 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) 14 red tag pole change program 52 Hours
Continuous		  
08-Sep-26 12:00 10-Sep-26 17:30 ATCO TE 963s Protection & Control (963s Coyote Lake) update RAS 203 both A and B relay settings 53.5 Hours
Continuous		  
08-Sep-26 12:00 12-Sep-26 12:00 ATCO TE 754S 500D1 (754s Ksituan River), 754s RTU/SCADA (754s Ksituan River), 754s Protection & Control (754s Ksituan River) preparation for 500D1 replacement on Sep 12 (ref 2-108994) - disabling all electrical circuits to MOD cabinet - AC/DC panels, 87TB/703T relay, and RTU
72 Hours
Continuous		  
08-Sep-26 12:30 11-Sep-26 17:00 ALTALINK Outage 370s T3 (370s North Lethbridge), 370s 2152 (370s North Lethbridge) leak repair, major TC maintenance PRC5 76.5 Hours
Continuous		  
08-Sep-26 14:00 10-Sep-26 16:30 ALTALINK Outage 283s T1 (283s Violet Grove) transformer maintenance 50.5 Hours
Continuous		  
08-Sep-26 23:00 10-Sep-26 07:00 ALTALINK, TRANSALTA Outage 250p T2 (250p Bighorn Plant), 250p 2 (250p Bighorn Plant) maintenance 8 Hours
Continuous		  
09-Sep-26 07:00 10-Sep-26 07:00 ALTALINK, TRANSALTA Outage 250p T1 (250p Bighorn Plant), 250p 1 (250p Bighorn Plant) maintenance 24 Hours
Continuous		  
09-Sep-26 07:00 18-Sep-26 17:00 EPCOR Outage 72RV6 (EP 511s Victoria - Rossdale), EP 511s Victoria T3 (EP 511s Victoria), EP 511s V724 (EP 511s Victoria), EP 511s V725 (EP 511s Victoria), RV722 (Rossdale), EP 511s V723 (EP 511s Victoria), EP 511s VDS9 (EP 511s Victoria), EP 511s VAB3 (EP 511s Victoria) RV6/Victoria: RV6/TX3 Zone, civil works for emergency TX3 replacement 226 Hours
Continuous		  
09-Sep-26 07:30 10-Sep-26 16:30 ATCO, ALTALINK RB 7L129 (526s Buffalo Creek - 7LA129 tap) installing marker cones on 7L65 OPGW, str 1-2 33 Hours
Continuous		  
09-Sep-26 08:00 11-Sep-26 18:00 SUNCOR Outage 29EDD-18 29PT-100 (29EDD-18 Firebag), 29EDD-18 29-752-102 (29EDD-18 Firebag), 29EDD-18 29-752-103 (29EDD-18 Firebag), 29EDD-18 29PS-0059 (29EDD-18 Firebag) replacement M6707
58 Hours
Continuous		  
09-Sep-26 08:00 14-Sep-26 13:00 ATCO RB 7L760 (767s Oyen - 7LC760 tap) installing interphase spacers on 7L760 live line 144 Hours
Continuous		  
09-Sep-26 08:00 14-Sep-26 13:00 ALTALINK RB 760L (163s Amoco Empress - 760AL tap) installing interphase spacers on 7L760 live line 125 Hours
Continuous		  
09-Sep-26 08:00 10-Sep-26 16:00 ATCO, ALTALINK RB 7L129 (710s Vermilion - 7LA129 tap), 7L129 (526s Buffalo Creek - 7LA129 tap) installing marker cones on 7L65 OPGW, str 1-2 32 Hours
Continuous		  
09-Sep-26 08:00 10-Sep-26 16:00 ALTALINK TE 283s RTU/SCADA (283s Violet Grove) RTU database update 32 Hours
Daily		  
09-Sep-26 08:00 10-Sep-26 16:00 ATCO Outage 7L65 (710s Vermilion - 7LA65 tap), 710s 703 (710s Vermilion) installing marker cones on 7L65 OPGW, str 1-2 32 Hours
Continuous		  
09-Sep-26 08:00 10-Sep-26 16:00 ALTALINK TE AltaLink Telecom Equipment, AML 511s RTU/SCADA (AML 511s Crossings) firewall upgrade, MPLS 7705 node firmware upgrade, RAW socket conversion 32 Hours
Daily		  
09-Sep-26 08:00 10-Sep-26 16:00 ALTALINK TE 238s RTU/SCADA (238s Shell Harmattan) assist telecom with intermittent loss of visibility, replace equipment on Sep 10 8 Hours
Daily		  
09-Sep-26 08:00 10-Sep-26 16:00 ENMAX TE Protection & Control (SS-36) 36 sub autoswitching protection outage - relay protection test - 36RLY138-36.ASW 32 Hours
Daily		  
09-Sep-26 09:00 11-Sep-26 15:00 ATCO Outage 905s 701 (905s Meikle) south phase repairs, SF6 GL312 testing 54 Hours
Continuous		  
09-Sep-26 09:00 11-Sep-26 17:00 BCH RB 5L91 (BCH Ashton Creek - BCH Selkirk) ANRP for mechanical tree removal along 5L091 from 7-03 to 8-01 56 Hours
Continuous		 AB-BC
09-Sep-26 10:00 10-Sep-26 16:00 ATCO TE 825s Protection & Control (825s Whitefish Lake), 825s Whitefish Lake RTU/SCADA configuration change 30 Hours
Continuous		  
10-Sep-26 07:00 10-Sep-26 17:00 ALTALINK, EPCOR RB 909L (89s Ellerslie - 665s Dome) 909LE - aerial washing program 10 Hours
Continuous		  
10-Sep-26 07:00 10-Sep-26 17:30 ALTALINK, EPCOR RB 909L (89s Ellerslie - 665s Dome) 909LE - aerial washing program 10.5 Hours
Continuous		  
10-Sep-26 07:00 11-Sep-26 17:00 ALTALINK TE 77s Protection & Control (77s Sagitawah) protection outages for trip testing 34 Hours
Daily		  
10-Sep-26 07:30 12-Sep-26 19:30 ATCO, ALTALINK RB 966L (650s Hansman Lake - 932s Pemukan) installing marker cones on 9L966 at str spans 72, 73, 81 60 Hours
Continuous		  
10-Sep-26 08:00 22-Sep-26 16:00 ALTALINK TE 58s RTU/SCADA (58s Edson) update RTU/HMI configuration for the new T1 alarms/metering/controls 296 Hours
Daily		  
10-Sep-26 08:00 10-Sep-26 17:30 ALTALINK, EPCOR Outage 1209L (89s Ellerslie - 330p Genesee), 330p 1209LD (330p Genesee) 1209L structure 45 and 145, change saddles and pins. 9.5 Hours
Continuous		  
10-Sep-26 08:00 12-Sep-26 19:00 ATCO RB 9L46 (932s Pemukan - 959s Lanfine) installing marker Cones at str span 195 59 Hours
Continuous		  
10-Sep-26 08:00 12-Sep-26 19:00 ATCO, ALTALINK RB 9L966 (650s Hansman Lake - 932s Pemukan) installing marker cones on 9L966 at str spans 72, 73, 81 59 Hours
Continuous		  
10-Sep-26 08:00 10-Sep-26 12:00 ENMAX Outage 16.60L (SS-16 - SS-34), 34.2TR (SS-34), 34B69-16.60 (SS-34), 34MD69-34.2TR (SS-34), SW64 (SS-34) fall substation washing 4 Hours
Continuous		  
10-Sep-26 08:00 11-Sep-26 16:00 ENMAX Outage 2.82L (SS-2 - SS-5), 2MD138-2.82 (SS-2) XLPE cable sheath test 32 Hours
Continuous		  
10-Sep-26 08:00 10-Sep-26 17:30 ALTALINK, EPCOR Outage 1209L (89s Ellerslie - 330p Genesee) AltaLink Changing Saddles and Pins at Structures 45 and 145 on the 1209L. 9.5 Hours
Continuous		  
10-Sep-26 08:00 10-Sep-26 16:00 ENMAX Outage 8B138-7A0 (SS-8) substation - breaker trip circuit test 8 Hours
Continuous		  
10-Sep-26 08:00 10-Sep-26 16:00 ENMAX TE Protection & Control (SS-162) 162sub BF-5 86 protection outage - relays, lockout testing 162RLY138C60-7 8 Hours
Continuous		  
10-Sep-26 08:00 12-Sep-26 16:00 Syncrude TE Aurora RTU/SCADA (Aurora) downloads to the RTU for updated configurations 56 Hours
Continuous		  
10-Sep-26 08:00 10-Sep-26 16:00 ENMAX Outage 20.1TR (SS-20) 20.1TR broken oil temperature probe 8 Hours
Continuous		  
10-Sep-26 09:00 10-Sep-26 17:00 ALTALINK Outage 338s 552 (338s Cherhill) 338s552 breaker maintenance & first trip 8 Hours
Daily		  
10-Sep-26 09:00 10-Sep-26 16:00 ATCO TE ATCO Telecom Equipment Blumenort_S-Telecom- 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
10-Sep-26 09:00 10-Sep-26 16:00 ATCO, CapitalPower TE 972s RTU/SCADA (972s Tinchebray), 615s RTU/SCADA (615s Halkirk), ATCO Telecom Equipment Tinchebray_T-Telecom- 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
10-Sep-26 10:00 10-Sep-26 16:00 ALTALINK Outage 123s551W (123s Banff) connect trips from mobile 6 Hours
Continuous		  
10-Sep-26 10:00 10-Sep-26 16:00 ATCO TE ATCO Telecom Equipment replace telecom switch 6 Hours
Continuous		  
10-Sep-26 12:01 10-Sep-26 18:00 ENMAX Outage 21.61L (SS-21 - SS-34), 34.1TR (SS-34), 34B69-21.61 (SS-34), SW63 (SS-34), 34MD69-34.1TR (SS-34) fall substation washing 5.98 Hours
Continuous		  
10-Sep-26 13:00 11-Sep-26 11:30 ALTALINK Outage 123s T2 (123s Banff) connect 474s LV cables and create open point 'C' 22.5 Hours
Continuous		  
10-Sep-26 15:01 10-Sep-26 19:00 ATCO Outage 7L68 (730s Rycroft - 811s Clairmont Lake), 811s 707 (811s Clairmont Lake), 730s 704 (730s Rycroft) emergency outage to repair structures 508 and 509 4 Hours
Continuous		  
11-Sep-26 06:00 11-Sep-26 18:00 ALTALINK Outage 77s 252 (77s Sagitawah) SCADA visibility upgrades 12 Hours
Daily		  
11-Sep-26 07:00 11-Sep-26 17:00 ALTALINK, EPCOR RB 909L (310p Sundance - 665s Dome) 909LW - aerial washing program 10 Hours
Continuous		  
11-Sep-26 07:00 11-Sep-26 17:30 ALTALINK, EPCOR RB 909L (310p Sundance - 665s Dome) 909LW - aerial washing program 10.5 Hours
Continuous		  
11-Sep-26 07:15 11-Sep-26 18:00 ALTALINK Outage 838L (14s Devon - 325s Leduc), 14s 838X (14s Devon), 325s 838 (325s Leduc) transmission line maintenance 10.75 Hours
Daily		  
11-Sep-26 07:30 11-Sep-26 16:30 ALTALINK RB 54AL (29s Cascade - 54L tap), 54L (118s Canmore - 85L tap), 54L (123s Banff - 177s West Cascade), 54L (177s West Cascade - 54AL tap), 85L (35s Rundle Plant - 54L tap) install 474s mobile at 123s for urgent transformer testing and bushing replacement - connect 474s to 54L 9 Hours
Continuous		  
11-Sep-26 08:00 14-Sep-26 16:00 ATCO, CNRL IO 838s 75-SD-901 (838s Horizon Mining) SEL-411L firmware update and testing, and breaker and disconnect testing 80 Hours
Continuous		  
11-Sep-26 08:00 14-Sep-26 16:00 ATCO, CNRL Outage 838s 904 (838s Horizon Mining), 838s 901 (838s Horizon Mining), 838s 75-SD-902 (838s Horizon Mining) isolation 80 Hours
Continuous		  
11-Sep-26 08:00 11-Sep-26 12:00 ENMAX Outage 16.61L (SS-16 - SS-27), 27.1TR (SS-27), 27B69-16.61 (SS-27), SW64 (SS-27) fall substation washing 4 Hours
Continuous		  
11-Sep-26 08:00 11-Sep-26 16:00 ALTALINK TE 86s RTU/SCADA (86s Bigstone), AltaLink Telecom Equipment firewall upgrade, MPLS 7705 node firmware upgrade 8 Hours
Daily		  
11-Sep-26 08:00 11-Sep-26 17:00 ALTALINK TE 29s RTU/SCADA (29s Cascade), AltaLink Telecom Equipment MPLS firmware upgrade 9 Hours
Daily		  
11-Sep-26 08:00 11-Sep-26 16:00 ATCO, CNRL TE 838s Protection & Control (838s Horizon Mining) relay firmware upgrade and testing 8 Hours
Continuous		  
11-Sep-26 09:00 11-Sep-26 10:00 ATCO, ENEL TE ATCO Telecom Equipment, 7L65 (709s Vegreville - 7LA65 tap), 7L65 (710s Vermilion - 7LA65 tap), 7LA65 (708s Grizzly Bear - 7L65 tap) upgrading Mannville 'a' SAR OS to v21, then v22

1 Hour
Continuous		  
11-Sep-26 09:00 14-Sep-26 20:00 SUNCOR Outage 29EDD-94 29PS-640 (29EDD-94 Voyageur), 29PL9-25 (29EDD-94 Voyageur - 29EDD-61 Stony Island) 29PS-640 requires to be realigned as it is not seated correctly while closed. 155 Hours
Continuous		  
11-Sep-26 10:00 11-Sep-26 11:59 SUNCOR Outage 29EDD-1 952-103 (29EDD-1 Millennium) 29EDD1 / X260B1 south bus PRC-005 / relay test - trip open 952-103 (29EDD-1 Millennium) - 450338059
In conjunction with outage 1-00529405		 1.98 Hours
Continuous		  
11-Sep-26 11:00 11-Sep-26 16:29 ALTALINK Outage 54L (123s Banff - 177s West Cascade), 123s T3 (123s Banff) advice required to create Open Point 'D' using live line methods. 5.48 Hours
Continuous		  
11-Sep-26 12:00 11-Sep-26 13:59 SUNCOR Outage 29EDD-1 952-106 (29EDD-1 Millennium) 29EDD1 / X260B1 south bus PRC-005 / relay test - trip open 952-106 (29EDD-1 Millennium) - 450338059
In conjunction with outage 1-00529405, following outage 1-00529407		 1.98 Hours
Continuous		  
11-Sep-26 12:00 11-Sep-26 18:00 ENMAX Outage 13.60L (SS-13 - SS-27), 27.2TR (SS-27), 27B69-13.60 (SS-27), 27MD69-27.2TR (SS-27), SW65 (SS-27) fall substation washing. reversing switch check - 27.2-TC 6 Hours
Continuous		  
11-Sep-26 14:00 11-Sep-26 16:00 SUNCOR Outage 29EDD-1 29EDD1s652 (29EDD-1 Millennium) 29EDD1 / X260B1 south bus PRC-005 / relay test - trip open 29EDD1s652 (29EDD-1 Millennium) - 450338059
In conjunction with outage 1-00529405, following outage 1-00529409		 2 Hours
Continuous		  
11-Sep-26 16:30 18-Sep-26 08:30 ALTALINK Outage 123s T3 (123s Banff) test T3 and replace bushings. 474s mobile will bypass T3. 160 Hours
Continuous		  
12-Sep-26 07:00 13-Sep-26 17:00 ALTALINK TE 77s Protection & Control (77s Sagitawah) breaker fail trip testing 77s552 34 Hours
Daily		  
12-Sep-26 08:00 14-Sep-26 18:00 SUNCOR Outage 29EDD-18 29PT-101 (29EDD-18 Firebag), 29EDD-18 29-752-101 (29EDD-18 Firebag), 29EDD-18 29-752-105 (29EDD-18 Firebag) Firebag: 29EDD18 29PT101 T60 Replacement M6707 58 Hours
Continuous		  
12-Sep-26 08:00 12-Sep-26 18:00 ATCO Outage 7L10 (754s Ksituan River - 7LA10 tap), 754s 701T (754s Ksituan River), 754s 703T (754s Ksituan River), 754s 702C (754s Ksituan River), 754S 703 (754s Ksituan River) replace structure 7L10-1 10 Hours
Continuous		  
12-Sep-26 08:00 12-Sep-26 18:01 ATCO IO 754s 701T (754s Ksituan River), 754s 703T (754s Ksituan River), 754s 702C (754s Ksituan River) work in conjunction with 7L10 outage
 10.02 Hours
Continuous		  
12-Sep-26 08:00 20-Sep-26 16:00 CNRL Outage 842s 75-TR-4701 (842s Horizon Upgrading), 842s 75-1903 (842s Horizon Upgrading), 842s 75-1904 (842s Horizon Upgrading) 5YR PMs of Transformer, Breakers, Disconnects, and Protective Relays 200 Hours
Continuous		  
12-Sep-26 08:00 14-Sep-26 19:00 ATCO RB 7L25 (768s Rowley - 802s Michichi Creek) installing marker cones on 7L25 str spans 132, 207, 208 59 Hours
Continuous		  
12-Sep-26 08:00 12-Sep-26 18:00 ENMAX, ALTALINK Outage 7.84L (SS-7 - SS-36), 36.81L (44s Bearspaw Plant - SS-36), 36.1TR (SS-36), 36.3TR (SS-36), 36B138-36BT3 (SS-36), 36B138-36.81 (SS-36), 7B138-7.84 (SS-7), 36B138-7.84 (SS-36), 36MD138-36.1TR (SS-36), 36MD138-36.3TR (SS-36), SW83 (SS-36), SW89 (SS-36), SW90 (SS-36) fall substation washing - 36-SW87 replace broken stops, reversing switch check - 36.1-TC, 36.3-TC 10 Hours
Continuous		  
12-Sep-26 08:00 14-Sep-26 16:00 ATCO RB 7L16 (766s Nevis - 948s Heatburg) installing marker cones on 7L16 str span 383 56 Hours
Continuous		  
12-Sep-26 08:00 12-Sep-26 19:00 ENMAX, ALTALINK IO 36.81L (44s Bearspaw Plant - SS-36) fall substation washing 11 Hours
Continuous		  
12-Sep-26 09:30 12-Sep-26 18:00 ALTALINK Outage 77s 352 (77s Sagitawah) trip testing 77s352. 8.5 Hours
Daily		  
12-Sep-26 13:00 12-Sep-26 16:00 SUNCOR Outage 29EDD-1 29EDD1s352 (29EDD-1 Millennium) 29EDD1 / X260B1 south bus PRC-005 / relay test - trip open 29EDD1s352 (29EDD-1 Millennium) - in conjunction with outage 1-00529405 3 Hours
Continuous		  
13-Sep-26 07:30 13-Sep-26 18:00 ALTALINK Outage 77s 652 (77s Sagitawah) trip testing 77s652 10.5 Hours
Daily		  
13-Sep-26 08:00 13-Sep-26 15:00 ENMAX Outage 36.5TR (SS-36), 16B69-16.63 (SS-16), 14.83L (SS-14 - SS-36), 36.2TR (SS-36), 36B138-36BT3 (SS-36) Fall Substation Washing. Reversing Switch Check - 36.2-TC 7 Hours
Continuous		  
13-Sep-26 09:00 14-Sep-26 12:00 ATCO Outage 6L56 (763s Hanna - 802s Michichi Creek) Aerial marker cone installation at str spans 47, 48 27 Hours
Continuous		  
14-Sep-26 06:00 18-Sep-26 19:00 ALTALINK RB 610L (83s Taber - 336s Fincastle) install temporary understrung line, stringing wire, Fortis 83s15L is understrung on 610L 109 Hours
Daily		  
14-Sep-26 06:00 14-Sep-26 18:00 SUNCOR Outage 635EDD-1001 635-752-643 (635EDD-1001) 144kV breaker 635-752-643 SF6 gas testing 12 Hours
Continuous		  
14-Sep-26 07:00 14-Sep-26 17:00 EPCOR Outage N723 (Namao) Namao: N723 (SF6) breaker maintenance 10 Hours
Continuous		  
14-Sep-26 07:00 20-Sep-26 17:00 EPCOR Outage EP 803s L2402 (EP 803s Lambton) Lambton: L2402 (Min Oil) breaker maintenance and CT doble 154 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:30 ALTALINK RB 747L (37s North Calder - 711L tap), 747L (99s North St. Albert - 711L tap) aerial washing program 274.5 Hours
Continuous		  
14-Sep-26 07:00 15-Sep-26 17:00 ALTALINK Outage 535s 6652 (535s Joffre) cutover CT circuits from 535s6652, breaker trips for new 138B1 and 138B2 relays, install new outdoor control cables and terminate 34 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72LH8 (EP 803s Lambton - EP Hardisty) LH8 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72CH9 (987s Clover Bar - EP Hardisty) CH9 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72CH11 (987s Clover Bar - EP Hardisty) CH11 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72LS24 (EP 803s Lambton - Strathcona) LS24 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72CN10 (987s Clover Bar - Namao) CN10 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 25-Sep-26 17:00 EPCOR TE 72KN23 (Kennedale - Namao) KN23 - protection blocking for MPLS cutovers and commissioning 274 Hours
Continuous		  
14-Sep-26 07:00 15-Sep-26 18:00 ALTALINK, EXPPIPE RB 703L (377s AML Hardisty - 703BL tap), 703BL (329s HRT Express - 703L tap), 703L (213s Hughenden - 703BL tap) replacement of the Fortis under-build cross arms on 703L str 22 and 27 35 Hours
Daily		  
14-Sep-26 07:00 14-Sep-26 17:00 EPCOR Outage 987s C1 (987s Clover Bar) bus differential upgrade cutovers 10 Hours
Continuous		  
14-Sep-26 07:00 14-Sep-26 17:00 ALTALINK RB 825L (77s Sagitawah - 484s Millar Western) perform insulation washing on structures 825L 74 and 75 10 Hours
Continuous		  
14-Sep-26 07:30 14-Sep-26 18:00 ALTALINK Outage 1112L (89s Ellerslie - 289s Saunders Lake) transmission line maintenance 10.5 Hours
Daily		  
14-Sep-26 07:30 14-Sep-26 18:00 ALTALINK RB 1140L (89s Ellerslie - 289s Saunders Lake) safety requirement for proximity to 1112L 10 Hours
Daily		  
14-Sep-26 08:00 27-Sep-26 20:00 SUNCOR Outage 29EDD-1 29EDD1S35 (29EDD-1 Millennium), 29EDD-1 29EDD1S38 (29EDD-1 Millennium) 29EDD22;29PT-84 & 29PL6-5 SYSTEM;PM 5y
 324 Hours
Continuous		  
14-Sep-26 08:00 19-Sep-26 12:00 ENMAX Outage 1.81L (SS-1 - SS-20), 20B138-1.81 (SS-20), 1MD138-1.81 (SS-1) Construction 1.81L River Crossing. Drill South side 124 Hours
Continuous		  
14-Sep-26 08:00 27-Sep-26 16:00 SUNCOR Outage 29PL6-5 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-1 29PS-196 (29EDD-1 Millennium), 29PS-44 (29EDD-22) 29EDD22;29PT-84 & 29PL6-5 SYSTEM;PM 5y - 450338020; 29PT-84 Tap Changer; 29PS-196 Closing Concern; 352-1700T Racking mech to be adjusted 320 Hours
Continuous		  
14-Sep-26 08:00 17-Sep-26 16:00 ALTALINK, TRANSALTA TE 179s Protection & Control (179s Gleichen) complete PRC maintenance 80 Hours
Daily		  
14-Sep-26 08:00 18-Sep-26 15:00 CMH, TCPL TE MH-65L (MHS-7 Brier Park - Cancarb Energy Medicine Hat) carry out maintenance on the LDR-65L-A 103 Hours
Continuous		  
14-Sep-26 08:00 17-Dec-26 17:00 ATCO TE 738s RTU/SCADA (738s Virginia Hills), 738s Protection & Control (738s Virginia Hills) SCADA/protection upgrade at 738s Virginia Hills, cut over to the new SCADA system and tested 2,266 Hours
Continuous		  
14-Sep-26 08:00 07-Oct-26 16:00 ALTALINK TE 434s RTU/SCADA (434s Stony Plain) RTU database update 560 Hours
Daily		  
14-Sep-26 08:00 02-Oct-26 16:00 ALTALINK TE 434s Protection & Control (434s Stony Plain) new T3 protections cutover/testing 440 Hours
Daily		  
14-Sep-26 08:00 17-Sep-26 16:00 ENMAX, ALTALINK Outage 833L (SS-2 - SS-12), 2B138-D87 (SS-2), 2B138-D88 (SS-2), 12B138-833L (SS-12), MD93 (SS-2), MD94 (SS-2), 2MD138-833L (SS-2) install ITBs - 2RLY138-D87-D88 (BMR4), relay maintenance 32 Hours
Continuous		  
14-Sep-26 08:00 14-Sep-26 18:00 ENMAX Outage 9.80L (SS-9 - SS-31), 9.1TR (SS-9) Fall Substation Washing 10 Hours
Continuous		  
14-Sep-26 08:00 17-Sep-26 16:00 ENMAX, ALTALINK IO 833L (SS-2 - SS-12) install ITBs and relay maintenance 80 Hours
Continuous		  
14-Sep-26 08:00 14-Sep-26 16:00 ALTALINK TE 392s Protection & Control (392s Black Diamond) standard maintenance on T2 A and S protections 8 Hours
Continuous		  
14-Sep-26 08:00 24-Sep-26 16:00 ALTALINK TE 431s RTU/SCADA (431s Hussar) migrate all the existing ACC points from the D20 RTU to the new SMP-4260 RTU 248 Hours
Daily		  
14-Sep-26 08:00 17-Sep-26 16:30 ALTALINK TE 185s RTU/SCADA (185s Bretville) RTU database update 80.5 Hours
Daily		  
14-Sep-26 08:00 14-Sep-26 16:00 ENMAX, ALTALINK IO 12B138-833L (SS-12) outage required for 12 sub Zone 31 bus differential protection outage. relay protection test - 12RLY138-12.Z31 - 86 lockouts 8 Hours
Continuous		  
14-Sep-26 08:00 18-Sep-26 16:00 ALTALINK TE 102s RTU/SCADA (102s Langdon) RTU outages for SCADA configuration updates involving new DLR and 77-1/175RAS protections 104 Hours
Daily		  
14-Sep-26 08:00 16-Sep-26 16:00 ALTALINK TE 133s RTU/SCADA (133s Stelco Edmonton) 133s - 38s telecom upgrade 56 Hours
Daily		  
14-Sep-26 08:00 17-Sep-26 16:00 ENMAX Outage 5.6TR (SS-5) transformer power factor test, secondary cable test, transformer maintenance, relay fault pressure test, oil sampling MT, TC 80 Hours
Continuous		  
14-Sep-26 08:00 14-Sep-26 16:00 ENMAX TE Protection & Control (SS-12) 12 sub 138 kV bus differential zone 31 protection, 86-zone 31 lockout protection outage, relay protection test - 12RLY138-12.Z31 - 86 lockouts 8 Hours
Continuous		  
14-Sep-26 08:00 14-Sep-26 16:00 ENMAX Outage 162B138-RB85 (SS-162) 162sub C60-8 and BF-6 86 protection outage. Relays, Lockout Testing 162RLY138C60-8. I&R Internal Battery Fail on C60-8 8 Hours
Continuous		  
14-Sep-26 08:00 18-Sep-26 16:00 ALTALINK, Travers2SolarLP TE 102s Protection & Control (102s Langdon), 991s Protection & Control (991s Little Bow) protection outages for circuit cutovers and testing associated with the DLR project 104 Hours
Daily		  
14-Sep-26 08:00 18-Sep-26 16:00 ALTALINK, Travers2SolarLP TE 991s Protection & Control (991s Little Bow) protection outages for the replacement of A77-1/175RAS and B77-1/175RAS protections at 102s 104 Hours
Continuous		  
14-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE 38s RTU/SCADA (38s East Edmonton) RTU outage for telecom upgrades 80 Hours
Daily		  
14-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE 133s Protection & Control (133s Stelco Edmonton) 133s T2 protection settings change 80 Hours
Daily		  
14-Sep-26 08:00 14-Sep-26 17:00 ALTALINK TE 37s Protection & Control (37s North Calder) standard relay maintenance 9 Hours
Daily		  
14-Sep-26 08:00 18-Sep-26 16:00 ALTALINK TE 356s Protection & Control (356s Milo) load encroachment settings changes required for DLR project 104 Hours
Daily		  
14-Sep-26 09:00 14-Sep-26 16:00 ATCO TE 888s Protection & Control (888s Dover), 888s RTU/SCADA (888s Dover) configuration changes
 7 Hours
Continuous		  
14-Sep-26 09:00 14-Sep-26 10:00 ATCO TE ATCO Telecom Equipment, 774s RTU/SCADA (774s Monitor) upgrading monitor SAR 'A' to V21, then V22 1 Hour
Continuous		  
14-Sep-26 09:00 22-Sep-26 17:00 BCH RB 2L294 (BCH A. A. Lambert - BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Nelway) tree removal 200 Hours
Continuous		 AB-BC
14-Sep-26 09:30 25-Sep-26 17:00 ALTALINK, EPCOR RB 711L (113s Inland Cement - 747L tap) aerial washing program 271.5 Hours
Continuous		  
14-Sep-26 09:30 17-Sep-26 17:00 ALTALINK, EPCOR Outage 920L (37s North Calder - 557s Castle Downs), 557s CD2401 (557s Castle Downs), 557s CD2404 (557s Castle Downs), 557s CDDS13 (557s Castle Downs) 920LW/Castledowns: surge arrestor LCR 79.5 Hours
Continuous		  
14-Sep-26 10:00 28-Sep-26 17:30 ATCO Outage 840s 901T (840s McNeill Station), 840s 701T (840s McNeill Station), 840s 701 (840s McNeill Station), 840s 901 (840s McNeill Station), 840s 702C (840s McNeill Station), 840s 703C (840s McNeill Station) replace 901T bushings, upgrading and testing 343.5 Hours
Continuous		 AB-SK
14-Sep-26 10:00 20-Sep-26 11:00 ATCO Outage 739s 701T (739s Edith Lake) installation of secondary oil containment, modify cable tray to accommodate the oil containment walls, install new ground rods outside the oil containment and install insulating gravel inside oil containment 172 Hours
Continuous		  
14-Sep-26 10:00 17-Sep-26 17:30 ALTALINK Outage 444L (198s Blackfalds - 217s North Red Deer), 198s 444 (198s Blackfalds), 217s 444 (217s North Red Deer) replace structure 79.5 Hours
Continuous		  
14-Sep-26 10:00 28-Sep-26 17:30 Saskpower Outage Sask Power S1M Line maintenance 343.5 Hours
Continuous		 AB-SK
14-Sep-26 10:30 21-Sep-26 15:30 ATCO, ALTALINK RB 199L (347s AML Fox Creek - 741s ATC Fox Creek) 14 red tag pole change program 173 Hours
Continuous		  
14-Sep-26 11:00 21-Sep-26 15:00 ATCO, ALTALINK RB 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) 14 red tag pole change program 172 Hours
Continuous		  
14-Sep-26 11:00 14-Sep-26 16:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) complete PRC/standard maintenance on 180L L5 A and B protection 5 Hours
Continuous		  
14-Sep-26 12:15 16-Sep-26 19:00 ATCO Outage 7L171 (802s Michichi Creek - 804s Wintering Hills) installing marker Cones on 7L171 str spans 644, 645, 771, 772. 54.75 Hours
Continuous		  
14-Sep-26 13:00 17-Sep-26 16:30 ALTALINK Outage 283s T2 (283s Violet Grove), 283s 489 (283s Violet Grove) transformer maintenance 75.5 Hours
Continuous		  
14-Sep-26 14:00 25-Sep-26 14:00 ATCO Outage 930s Syn Condenser (930s Arcenciel), 930s 719 (930s Arcenciel), 930s 702T (930s Arcenciel) level 4 service / overhaul by ABB
- DFR replacement		 343.5 Hours
Continuous		  
15-Sep-26 07:00 15-Sep-26 17:30 ALTALINK Outage 264s 352 (264s Elkwater) CT testing 8 Hours
Continuous		  
15-Sep-26 07:00 15-Sep-26 19:00 ALTALINK Outage 299s T1 (299s Kingman), 299s 732N (299s Kingman) switchgear replacement 12 Hours
Continuous		  
15-Sep-26 07:30 15-Sep-26 12:00 ALTALINK Outage 927L (102s Langdon - 356s Milo), 102s 6652 (102s Langdon), 102s 6552 (102s Langdon), 356s 927 (356s Milo) CT cutovers to new DLR protections LTO testing to RAS protections 4.5 Hours
Continuous		  
15-Sep-26 07:30 17-Sep-26 17:30 ALTALINK, TRANSALTA Outage 33s T2 (33s Spray) testing 58 Hours
Continuous		  
15-Sep-26 07:30 17-Sep-26 12:30 ALTALINK, TRANSALTA Outage 33s T1 (33s Spray) testing 53 Hours
Continuous		  
15-Sep-26 07:30 15-Sep-26 16:00 ALTALINK Outage 54L (118s Canmore - 85L tap) Line maintenance 8.5 Hours
Continuous		  
15-Sep-26 08:00 24-Sep-26 17:00 ALTALINK, Lethbridge Outage 725AL (618s Riverbend - 725L tap), 725L (674s Bowron - 725AL tap), 725LE (111s Coalbanks - 725AL tap), 618s 725 (618s Riverbend), 674s 725E (674s Bowron), 111s 725LE (111s Coalbanks), 674s 12 (674s Bowron) line outage on 725LE at 674s to replace 674s12 switch and 674sPT5-CVT 225 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 17:00 ALTALINK TE AltaLink Telecom Equipment LAN switch settings and firmware upgrade on MPLS nodes A and B, firewall upgrade
9 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 16:00 ALTALINK TE AltaLink Telecom Equipment investigate and mitigate - low fiber level during MPLS outage for upgrade at 895s Suffield 8 Hours
Continuous		  
15-Sep-26 08:00 19-Sep-26 16:00 ATCO, CNRL Outage 838s 75-SD-901 (838s Horizon Mining) relay firmware update and testing 104 Hours
Continuous		  
15-Sep-26 08:00 19-Sep-26 16:00 ATCO, CNRL Outage 838s 75-SD-901 (838s Horizon Mining), 838s 903 (838s Horizon Mining), 838s 906 (838s Horizon Mining) customer request 104 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 12:00 ENMAX Outage 33.83L (SS-33 - SS-41), 33.1TR (SS-33), 33B138-33.83 (SS-33), 33MD138-33.1TR (SS-33), SW83 (SS-33) fall substation washing, reversing switch check - 33.1-TC 4 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 16:00 ATCO, CNRL, ALBIAN Outage 847s 901T (847s Muskeg River), 919s 906 (919s Hartley) CT/VT and power supply upgrades, 520-TP-003 T60 relay setting changes 8 Hours
Continuous		  
15-Sep-26 08:00 17-Sep-26 13:00 ALTALINK, TRANSALTA Outage 35s T2 (35s Rundle Plant) maintenance 53 Hours
Continuous		  
15-Sep-26 08:00 16-Sep-26 16:00 ALTALINK TE 895s RTU/SCADA (895s Suffield), AltaLink Telecom Equipment firewall upgrade, MPLS 7705 node firmware upgrade, convert supervisory from DNP-IP to RAW socket 32 Hours
Daily		  
15-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE 312s Protection & Control (312s Fidler) PRC maintenance 56 Hours
Daily		  
15-Sep-26 08:00 15-Sep-26 16:00 ALTALINK TE AltaLink Telecom Equipment Radio hop is erroring and causing issues with point 514LN_TRANS_TRIP_RX and needs to be repaired to rectify the alarm condition 8 Hours
Daily		  
15-Sep-26 08:00 17-Sep-26 18:00 ALTALINK, EXPPIPE RB 703BL (329s HRT Express - 703L tap), 703L (213s Hughenden - 703BL tap), 703L (377s AML Hardisty - 703BL tap) replace cross arms and insulation - str 22, 27, 60, 133,142,158 58 Hours
Daily		  
15-Sep-26 08:00 15-Sep-26 16:00 ENMAX TE Protection & Control (SS-6) 6 sub Z31 138 kV bus differential protection, 86-Z31 lockout relay protection outage, relays, lockout testing 6RLY138-6.Z31 8 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 16:00 ENMAX TE Protection & Control (SS-162) 162 sub BF-3 86 protection outage, relays, lockout testing 162RLY138C60-5 8 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 16:30 ATCO TE 788s RTU/SCADA (788s Hotchkiss), ATCO Telecom Equipment Hotchkiss_S-Telecom- upgrade firewalls 8.5 Hours
Continuous		  
15-Sep-26 08:00 15-Sep-26 16:30 ATCO TE ATCO Telecom Equipment Leming Lake_S_Telecom- upgrade firewalls 8.5 Hours
Continuous		  
15-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE 328s RTU/SCADA (328s Pine Creek) RTU database update 56 Hours
Daily		  
15-Sep-26 08:30 15-Sep-26 11:30 ALTALINK Outage 337s T1 (337s Canada Liquidair), 337s T2 (337s Canada Liquidair), 337s 746BW (337s Canadian Liquid Air) create 337s open point 'A' on the high side of T1 3 Hours
Daily		  
15-Sep-26 08:30 15-Sep-26 10:30 ALTALINK, TRANSALTA Outage 33s T1 (33s Spray) maintenance 2 Hours
Continuous		  
15-Sep-26 09:00 24-Sep-26 17:30 ALTALINK, Lethbridge Outage 618s 725 (618s Riverbend), 725AL (618s Riverbend - 725L tap), 725L (111s Coalbanks - 725AL tap), 725L (674s Bowron - 725AL tap) Outage required to replace 674s12-Disconnect Switch and 674sPT5-CVT 224.5 Hours
Continuous		  
15-Sep-26 09:00 15-Sep-26 16:00 ATCO TE 848s Protection & Control (848s Ruth Lake), 848s RTU/SCADA (848s Ruth Lake) configuration change 7 Hours
Continuous		  
15-Sep-26 09:00 15-Sep-26 10:00 ATCO TE ATCO Telecom Equipment, 730s RTU/SCADA (730s Rycroft) upgrading RYCROFT 'A' SAR to V21 then V22 1 Hour
Continuous		  
15-Sep-26 09:00 17-Sep-26 17:00 ALTALINK Outage 535s C1 (535s Joffre) replace failed POW controller to bring breaker back to an operational state 56 Hours
Continuous		  
15-Sep-26 09:00 15-Sep-26 11:00 ALTALINK, TRANSALTA Outage 33s T2 (33s Spray) maintenance 2 Hours
Continuous		  
15-Sep-26 09:00 15-Sep-26 10:00 ATCO TE ATCO Telecom Equipment upgrading CHARD TOWER 'A' SAR OS from V21 to V22 1 Hour
Continuous		  
15-Sep-26 09:00 15-Sep-26 16:00 ATCO TE ATCO Telecom Equipment Weasel Creek_S-Telecom- 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
15-Sep-26 10:30 18-Sep-26 15:00 ALTALINK Outage 337s T1 (337s Canada Liquidair) 337s T1 testing, maintenance and leak repairs 76.5 Hours
Continuous		  
15-Sep-26 10:31 15-Sep-26 12:30 ALTALINK Outage 33s 1 (33s Spray) maintenance 1.98 Hours
Continuous		  
15-Sep-26 11:00 05-Nov-26 19:00 ATCO TE 888s RTU/SCADA (888s Dover) RTU updates for 9L74 protection upgrade 1,233 Hours
Continuous		  
15-Sep-26 11:01 15-Sep-26 13:00 ALTALINK Outage 33s 2 (33s Spray) maintenance 1.98 Hours
Continuous		  
15-Sep-26 12:01 15-Sep-26 18:00 ENMAX Outage 33.84L (SS-33 - SS-43), 33.2TR (SS-33), 33B138-33.84 (SS-33), 33MD138-33.2TR (SS-33), SW84 (SS-33) fall substation washing, reversing switch check - 33.2-TC 5.98 Hours
Continuous		  
15-Sep-26 12:30 15-Sep-26 15:30 ALTALINK Outage 924L (102s Langdon - 356s Milo), 102s 6952 (102s Langdon), 102s 6852 (102s Langdon), 356s 924 (356s Milo) CT cutovers to new DLR protections LTO testing to RAS protections 3.98 Hours
Continuous		  
16-Sep-26 07:00 16-Sep-26 17:30 ALTALINK Outage 264s 452 (264s Elkwater) CT testing 8 Hours
Continuous		  
16-Sep-26 07:00 16-Sep-26 17:00 ALTALINK Outage 535s T3 (535s Joffre), 535s 34 (535s Joffre) cutover CT circuit from T3 to new 138B2 relay 10 Hours
Continuous		  
16-Sep-26 07:00 16-Sep-26 19:00 ALTALINK Outage 397s 864W (397s Benbow), 864AL (346s Kaybob - 864L tap), 864BL (355s Chevron Knight - 864L tap), 864L (397s Benbow - 864AL tap), 864L (551s Chevron Kaybob - 864BL tap), 397s 714 (397s Benbow) Outage to create permanent open points on low side at 346s and 355s, 12 Hours
Daily		  
16-Sep-26 07:00 19-Sep-26 17:00 ALTALINK, WINNIFRED RB 498L (523s Bullshead - 1054s Holsom) work on fiber optic canister on structure 169 82 Hours
Daily		  
16-Sep-26 07:00 16-Sep-26 19:00 ALTALINK Outage 414s T1 (414s Gulf Robb), 414s 740A (414s Gulf Robb) maintenance 12 Hours
Continuous		  
16-Sep-26 07:30 17-Sep-26 18:30 ALTALINK RB 760L (163s Amoco Empress - 760AL tap) installing marker cones at str span 410, 411 35 Hours
Continuous		  
16-Sep-26 08:00 19-Sep-26 18:00 SUNCOR Outage 29EDD-18 29PT-204 (29EDD-18 Firebag), 29EDD-18 29-752-104 (29EDD-18 Firebag), 29EDD-18 29-752-106 (29EDD-18 Firebag) maintenance 82 Hours
Continuous		  
16-Sep-26 08:00 16-Sep-26 17:00 ALTALINK TE 205s RTU/SCADA (205s Castle Rock Ridge) split the existing SCADA VLAN from 1 to 1 and 2 9 Hours
Continuous		  
16-Sep-26 08:00 20-Sep-26 16:00 CNRL Outage 842s 75-TR-7701 (842s Horizon Upgrading), 842s 75-1904 (842s Horizon Upgrading), 842s 75-1905 (842s Horizon Upgrading) maintenance 104 Hours
Continuous		  
16-Sep-26 08:00 16-Sep-26 12:00 ENMAX Outage 2.80L (SS-2 - SS-23), 23.3TR (SS-23) Fall Substation Washing 4 Hours
Continuous		  
16-Sep-26 08:00 17-Sep-26 18:00 ATCO RB 7L760 (767s Oyen - 7LC760 tap) installing marker cones at str span 410, 411 34 Hours
Continuous		  
16-Sep-26 08:00 17-Sep-26 19:00 ATCO RB 7L128 (963s Coyote Lake - 7LA128 tap), 7L128 (802s Michichi Creek - 7LA128 tap) installing marker cones on 7L128 at str span 85 35 Hours
Continuous		  
16-Sep-26 08:00 16-Sep-26 16:00 ATCO, CNRL TE 838s Protection & Control (838s Horizon Mining) relay firmware upgrade and testing 8 Hours
Continuous		  
16-Sep-26 08:00 19-Sep-26 17:00 ALTALINK TE AltaLink Telecom Equipment opening OPGW splice cannister at structure 169 of 498L, splicing an AD cable into the can on dark fibers 81 Hours
Daily		  
16-Sep-26 08:00 16-Sep-26 16:00 ENMAX Outage 6.4TR (SS-6) relays, lockout testing 6RLY138-6.4TR 8 Hours
Continuous		  
16-Sep-26 08:00 16-Sep-26 16:00 ENMAX TE Protection & Control (SS-162) 162 sub BF-2 86 protection outage - relays, lockout testing 162RLY138C60-5 8 Hours
Continuous		  
16-Sep-26 08:00 16-Sep-26 16:00 ALTALINK TE AltaLink Telecom Equipment Replace defective MDA 2 card in 7705B. 624L TPR out of service for 2 minutes. 616L (59s-383s) TPR, 616L (103s-383s) TPR, Kettle Hills (103s-383s) RAS 50ms outage during re-route. All protection outages 1 at a time with redundant protection in service at all times 8 Hours
Daily		  
16-Sep-26 09:00 16-Sep-26 10:00 ATCO TE ATCO Telecom Equipment upgrading STONEY MTN TOWER 'A' SAR to V21 then V22 1 Hour
Continuous		  
16-Sep-26 09:00 16-Sep-26 16:00 ATCO TE ATCO Telecom Equipment Salt Creek_S-Telecom/Thickwood Hills_S-Telecom maintenance and upgrade 7 Hours
Continuous		  
16-Sep-26 09:00 16-Sep-26 16:00 ATCO TE ATCO Telecom Equipment Kidney Lake_S-Telecom- 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
16-Sep-26 12:00 16-Sep-26 18:00 ENMAX, ALTALINK Outage 23.80L (74s Janet - SS-23), 23.4TR (SS-23) Fall Substation Washing 6 Hours
Continuous		  
16-Sep-26 23:30 17-Sep-26 02:30 ALTALINK Outage 62s T1 (62s Brazeau Plant) maintenance 3 Hours
Continuous		  
17-Sep-26 03:30 17-Sep-26 06:30 ALTALINK Outage 62s T2 (62s Brazeau Plant) maintenance 3 Hours
Continuous		  
17-Sep-26 07:00 17-Sep-26 17:30 ALTALINK Outage 264s 252 (264s Elkwater) CT testing 8 Hours
Continuous		  
17-Sep-26 07:30 18-Sep-26 19:30 ATCO, ALTALINK RB 1088L (324s Cassils - 2075s Newell) installing marker cones on 9L1035/1068, str spans 4 and 8 36 Hours
Continuous		  
17-Sep-26 07:30 18-Sep-26 19:30 ATCO, ALTALINK RB 1087L (324s Cassils - 2075s Newell) installing marker cones on 9L1067/923 at str span 6 36 Hours
Continuous		  
17-Sep-26 07:30 18-Sep-26 19:30 ATCO, ALTALINK RB 923L (356s Milo - 2075s Newell) installing marker cones on 9L923/1067 at str span 6 36 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE AltaLink Telecom Equipment split the existing SCADA VLAN from 1 to 1 and 2 8 Hours
Continuous		  
17-Sep-26 08:00 18-Sep-26 19:00 ATCO, ALTALINK RB 9L1088 (324s Cassils - 2075s Newell) installing marker cones on 9L1035/1068, str spans 4 and 8 35 Hours
Continuous		  
17-Sep-26 08:00 18-Sep-26 19:00 ATCO, ALTALINK RB 9L1087 (324s Cassils - 2075s Newell) installing marker cones on 9L1067/923 at str span 6 35 Hours
Continuous		  
17-Sep-26 08:00 18-Sep-26 19:00 ATCO, ALTALINK RB 923L (356s Milo - 2075s Newell) installing marker cones on 9L923/1067 at str span 6 35 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 18:00 ENMAX Outage 2.81L (SS-2 - SS-9), 9.83L (SS-9 - SS-43), 9.2TR (SS-9), 9.3TR (SS-9), 9B138-2.81 (SS-9), 9B138-9.83 (SS-9), SW83 (SS-9), SW84 (SS-9), 9MD138-9.3TR (SS-9) fall substation washing 10 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 16:00 ATCO TE ATCO Telecom Equipment Thornton_S – Telecom - bringing new fiber link to 845s Big mountain on line, site switch updates 8 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 17:30 ALTALINK Outage 332s T1 (332s Ellis) maintenance 9.5 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 16:00 ENMAX TE Protection & Control (SS-162) 162 sub BF-1 86 protection outage - relays, lockout testing 162RLY138C60-4 8 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 20:00 ATCO IO ATCO's system operations centre, 7L128 (802s Michichi Creek - 7LA128 tap), 7L128 (963s Coyote Lake - 7LA128 tap), 7L32 (813s Little Smoky - 862s South Bezanson) upgrading dynamic load rating server for bug fixes
12 Hours
Continuous		  
17-Sep-26 08:00 17-Sep-26 16:00 ALTALINK TE 225s Protection & Control (225s Magrath), 618s Protection & Control (618s Riverbend) MPLS maintenance 8 Hours
Continuous		  
17-Sep-26 08:30 17-Sep-26 13:00 ATCO TE ATCO Telecom Equipment IRU radio majors 4.5 Hours
Continuous		  
17-Sep-26 09:00 17-Sep-26 17:00 BCH, BPA Outage 5L51 (BPA Custer - BCH Ingledow) maintenance 8 Hours
Continuous		 AB-BC
17-Sep-26 09:00 17-Sep-26 16:00 ATCO TE ATCO Telecom Equipment, 878s RTU/SCADA (878s Kidney Lake) 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
17-Sep-26 09:00 17-Sep-26 16:00 ATCO TE 2029s RTU/SCADA (2029s Heathfield), ATCO Telecom Equipment 7750-2 integration, swapping site networking to VPLS 11 7 Hours
Continuous		  
17-Sep-26 13:00 17-Sep-26 17:00 ATCO TE ATCO Telecom Equipment, 7L106 (834s Wesley Creek - 905s Meikle), 7L131 (834s Wesley Creek - 905s Meikle) Weberville_T-Telecom/Wesley Creek_S-Telecom- IRU radio majors 4 Hours
Continuous		  
18-Sep-26 07:00 18-Sep-26 17:00 ALTALINK Outage 535s T5 (535s Joffre) cutover CT circuit from T5 and operate interposing main breaker relay for 952 (535s49) to new 138B2 relay 10 Hours
Continuous		  
18-Sep-26 07:30 18-Sep-26 17:30 ALTALINK RB 54AL (29s Cascade - 54L tap), 54L (118s Canmore - 85L tap), 54L (123s Banff - 177s West Cascade), 54L (177s West Cascade - 54AL tap), 85L (35s Rundle Plant - 54L tap) remove 474s mobile at 123s for urgent transformer testing and bushing replacement - disconnect 474s to 54L using live line technique and close open point 'A' 10 Hours
Continuous		  
18-Sep-26 08:00 18-Sep-26 18:00 ENMAX Outage 20.1TR (SS-20), 20MD138-20.1TR (SS-20), SW83 (SS-20) fall substation washing 10 Hours
Continuous		  
18-Sep-26 08:00 18-Sep-26 16:00 ALTALINK TE 149s RTU/SCADA (149s Nisku), AltaLink Telecom Equipment MPLS 7705 node firmware upgrade 8 Hours
Daily		  
18-Sep-26 08:00 18-Sep-26 16:00 ALTALINK TE 123s Protection & Control (123s Banff) settings changes to facilitate mobile removal, remove trip circuit from mobile to s551W 8 Hours
Continuous		  
18-Sep-26 08:00 18-Sep-26 18:00 ALTALINK Outage 332s T2 (332s Ellis) maintenance 10 Hours
Continuous		  
18-Sep-26 08:00 18-Sep-26 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod), AltaLink Telecom Equipment MPLS node upgrade 9 Hours
Daily		  
18-Sep-26 09:00 18-Sep-26 10:00 ATCO TE ATCO Telecom Equipment strome_T-Telecom- upgrading strome tower SAR TO V21, THEN V22. 1 Hour
Continuous		  
18-Sep-26 09:00 18-Sep-26 16:00 ATCO TE ATCO Telecom Equipment radio major. Team will be at cordel
RADIO DIGITAL CONSTELLATION PM @ CORDEL 1755 E(to Paintearth)		 7 Hours
Continuous		  
18-Sep-26 09:00 18-Sep-26 12:59 ALTALINK Outage 123s T2 (123s Banff) disconnect mobile 474s 3.98 Hours
Continuous		  
18-Sep-26 13:00 21-Sep-26 16:00 ALTALINK Outage 123s T2 (123s Banff) P+C crew may not have enough time to restore settings for T2 and may need to extend T2 outage 75 Hours
Continuous		  
18-Sep-26 14:00 18-Sep-26 17:00 ALTALINK Outage 337s T1 (337s Canada Liquidair), 337s T2 (337s Canada Liquidair), 337s 746BW (337s Canadian Liquid Air) close 337s open point 'A' on the high side of T1 3 Hours
Daily		  

Prepared On:   2026-09-09   15:37:15

This document and the information contained herein are based upon information and data which by their nature contain a degree of uncertainty and are subject to change. In addition, this document may contain information and data from public sources and/or third parties, which have been assumed to be accurate and complete and have not been verified. Accordingly, the Independent System Operator, operating as the Alberta Electric System Operator (the "AESO") makes no warranty, representation or guarantee, express or implied, with respect to this document or the information contained herein, including, but not limited to, any warranty, representation or guarantee of accuracy, completeness, timeliness, reliability, availability, absence of computer virus, non- infringement, merchantability or suitability for any purpose. Under no circumstances will the AESO, its members, officers, employees, contractors or agents, or any of their respective affiliates, be liable for any errors or omissions in, or any losses, damages or claims whatsoever, whether in contract, tort or otherwise, arising from use of or reliance upon, this document or any information contained herein.

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