Alberta Electric System Operator | |
Long Range Significant Transmission Outages for the period of 24 months starting 2025-04-05 | |
The table below contains the significant transmission outages submitted as tentative to the AESO. These Outages have not yet necessarily been approved, but are listed for awareness and coordination purposes. An Outage has been considered significant for this table if it meets any one (1) or more of the following criteria: |
|
|
|
Note: Where a transmission outage requires generation curtailments, the adjustments to generation will typically happen in the hours before the scheduled transmission outage and in the hour after the element is returned to service. | |
Previous Version | |
Download CSV | |
Owner | From | To | Duration | Element | Scheduled Activity | Affected Intertie |
---|---|---|---|---|---|---|
BHE Canada | 05-Oct-24 00:00 | 30-Apr-25 17:00 | Continuous |
207.71 Days
120s C1 (120s Picture Butte) | forced outage | |
ALTALINK | 24-Jan-25 00:00 | 31-Dec-25 16:00 | 341.67 Days
Continuous |
74s C3 (74s Janet) | forced outage | |
ENMAX, ALTALINK | 28-Mar-25 09:00 | 30-Apr-25 14:00 | 33.21 Days
Continuous |
240kV West Bus (SS-25), 1109L (SS-25 - SS-65), 25B240-D136 (SS-25), 25B240-D133 (SS-25), 25B240-D141 (SS-25), 25B240-D142 (SS-25), 25B240-D139 (SS-25), 25MD240-1109 (SS-25) | scaffold and begin to terminate new Cables at SS-25 | |
EPCOR | 31-Mar-25 07:00 | 07-Aug-25 17:00 | 129.42 Days
Continuous |
987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) | Cloverbar - TX1 LCR | |
SUNCOR | 01-Apr-25 08:00 | 08-Apr-25 20:00 | 7.5 Days
Continuous |
29EDD-34 29PT-341 (29EDD-34), 29EDD-34 29-952-142 (29EDD-34), 29EDD-34 29-952-143 (29EDD-34), 29EDD-34 29PS-0375 (29EDD-34), 29EDD-34 29-652-10200T (29EDD-34), 29EDD-34 29-652-10301 (29EDD-34), 29EDD-34 29-652-10302 (29EDD-34), 29EDD-34 29-652-10303 (29EDD-34), 29EDD-34 29PS-0380 (29EDD-34), 29EDD-34 29PS-0381 (29EDD-34), 29EDD-34 29PS-0382 (29EDD-34), 29EDD-34 29PS-609 (29EDD-34), 29EDD-34 29PS-610 (29EDD-34) | 10 year PM on 29EDD34;29PT-341 system and 5 year, 10 year PM on 29EDD34;29PP-103 system |
|
ATCO | 01-Apr-25 09:00 | 09-Apr-25 17:00 | 8.33 Days
Continuous |
7L701 (757s Battle River - 7LA701 tap), 757s 707 (757s Battle River) | replace overhead shield wire with OPGW cable on 7L701 from structure 1 to 11 | |
ALTALINK | 04-Apr-25 13:00 | 09-Apr-25 14:00 | 5.04 Days
Continuous |
879L (368s Burdett - 879L tap) | Replace structures 719-723. | |
ENMAX, ALTALINK | 05-Apr-25 08:00 | 06-Apr-25 16:00 | 1.33 Days
Continuous |
771L (SS-47 - SS-162), 162B138-RB82 (SS-162), 47.1TR (SS-47), 47.2TR (SS-47), 162B138-RB81 (SS-162) | HV SW Maint. 162SW85, 162SW84, MD-771L. SW85 at 162 center phase does not open past 90 deg-adjust. Summer washing 47sub SW81, SW86. | |
EPCOR | 07-Apr-25 07:00 | 08-Apr-25 17:00 | 1.42 Days
Continuous |
665s T2 (665s Dome) | Dome: TX2 Tap Changer Maintenance | |
ALTALINK | 07-Apr-25 07:00 | 14-Apr-25 17:30 | 7.44 Days
Continuous |
786L (799s Coleman - BCH Natal) | NTL Station Upgrade Project. Reconfigure 1L275, remove span | |
ENMAX | 07-Apr-25 08:00 | 08-Apr-25 16:00 | 1.33 Days
Continuous |
162B138-RB80 (SS-162), 162B138-RB81 (SS-162), 162.81L (391s Balzac - SS-162) | HV SW Maint. 162SW82, 162SW83, MD-162.81L | |
ALTALINK | 07-Apr-25 08:00 | 08-Apr-25 16:30 | 1.35 Days
Continuous |
391s 162.81 (391s Balzac) | HV SW Maint. 162SW82, 162SW83, MD-162.81L. | |
SUNCOR | 07-Apr-25 08:00 | 13-Apr-25 20:00 | 6.5 Days
Continuous |
29EDD-56 29PT-190 (29EDD-56) | BP (Corey) - 29EDD-56;29PT-190 SYSTEM;PM 5y; 29EDD56;29PP-41H SYSTEM;PM 5Y/10Y | |
BCH | 07-Apr-25 09:00 | 14-Apr-25 17:00 | 7.33 Days
Continuous |
1L275 (799s Coleman - BCH Natal) | NTL Station Upgrade Project. Reconfigure 1L275, remove span BC maintenance does not affect the Alberta ATC | AB-BC |
ALTALINK, DOW | 08-Apr-25 06:30 | 09-Apr-25 19:30 | 1.54 Days
Continuous |
899L (166s Dow Chemical Fort Saskatchewan - 218s Fort Saskatchewan Co-Gen), 166s 899N (166s Dow Chemical Fort Saskatchewan) | urgent replacement of 138 kV Koncar CTs associated with 166s 899N | |
ALTALINK | 08-Apr-25 07:30 | 16-Apr-25 10:30 | 8.13 Days
Continuous |
72s T1 (72s Leismer), 72s 2 (72s Leismer) | oil reclaim and leak repairs | |
ATCO | 08-Apr-25 09:30 | 08-Apr-25 17:00 | 7.5 Hours
Continuous |
934s 240kV Bus 900BS1 (934s Blackfly) | REPAIR - 934S 900SST1 C Phase Gas Pressure near low Top up Power PT gas levels |
|
EPCOR | 09-Apr-25 07:00 | 10-Apr-25 17:00 | 1.42 Days
Continuous |
665s T1 (665s Dome) | Dome: TX1 Tap Changer Maintenance | |
ENMAX, ALTALINK | 09-Apr-25 08:00 | 10-Apr-25 16:00 | 1.33 Days
Continuous |
932L (74s Janet - SS-162) | HV SW Maint. 162SW145, 162SW144, MD-932L | |
ENMAX, ALTALINK | 09-Apr-25 08:00 | 10-Apr-25 16:00 | 1.33 Days
Continuous |
932L (74s Janet - SS-162) | HV SW Maint. 162SW145, 162SW144, MD-932L | |
SUNCOR | 09-Apr-25 08:00 | 16-Apr-25 20:00 | 7.5 Days
Continuous |
29EDD-34 29PT-340 (29EDD-34) | BP (Corey) - 29EDD34;29PT-340 SYSTEM;PM 5y,10y; 29EDD34;29PP-102 SYSTEM;PM 5y,10y |
|
ALTALINK | 09-Apr-25 09:00 | 09-Apr-25 15:00 | 6 Hours
Daily |
618s 725 (618s Riverbend), 725AL (618s Riverbend - 725L tap), 725L (111s Coalbanks - 725AL tap), 725L (674s Bowron - 725AL tap) | Urgent outage to replace 138kV Susp. Insulators. | |
ATCO | 09-Apr-25 10:00 | 09-Apr-25 13:00 | 3 Hours
Continuous |
934s 901 (934s Blackfly) | 901 TRIP COIL TESTING | |
ATCO | 09-Apr-25 13:01 | 09-Apr-25 17:00 | 3.98 Hours
Continuous |
934s 902 (934s Blackfly) | 902 TRIP COIL TESTING | |
ALTALINK | 09-Apr-25 14:00 | 09-Apr-25 17:00 | 3 Hours
Daily |
879L (244s Bowmanton - 879AL tap), 879L (368s Burdett - 879L tap) | Close west jumper at Str 457A. | |
ATCO | 10-Apr-25 10:00 | 10-Apr-25 13:00 | 3 Hours
Continuous |
934s 905 (934s Blackfly) | TRIP COIL TESTING | |
ATCO | 10-Apr-25 13:01 | 10-Apr-25 17:00 | 3.98 Hours
Continuous |
934s 906 (934s Blackfly) | TRIP COIL TESTING | |
ALTALINK | 11-Apr-25 07:00 | 14-Apr-25 18:00 | 3.46 Days
Daily |
336s 607 (336s Fincastle), 607L (336s Fincastle - 607AL tap), 607L (135s Conrad - 607AL tap), 135s T1 (135s Conrad), 135s T2 (135s Conrad) | Breaker outage to add CT circuit to new PMU | |
ALTALINK | 11-Apr-25 07:00 | 14-Apr-25 18:00 | 3.46 Days
Continuous |
607L (135s Conrad - 607AL tap), 607L (336s Fincastle - 607AL tap), 135s T1 (135s Conrad), 135s T2 (135s Conrad) | Reconductoring from Structures 2 -7 and replacing structures 5 & 6, for Hwy 3 widening. | |
ALTALINK | 11-Apr-25 08:30 | 11-Apr-25 12:59 | 4.48 Hours
Daily |
72s 652 (72s Leismer) | 240kV Breaker Maintenance | |
BCH | 11-Apr-25 09:00 | 11-Apr-25 17:00 | 8 Hours
Continuous |
1L275 (799s Coleman - BCH Natal) | NTL Station Upgrade Project. Tie in 138kV line taps to two new line terminals at NTL BC maintenance does not affect the Alberta ATC | AB-BC |
ENMAX | 12-Apr-25 08:00 | 13-Apr-25 18:00 | 1.42 Days
Continuous |
162.1TR (SS-162), 138kV North Bus (SS-162) | HV SW Maint. 162SW110, 162SW96, 162SW81, MD13-162.1TR, Check reversing switch. | |
ATCO, ALBIAN | 13-Apr-25 08:00 | 23-Apr-25 16:00 | 10.33 Days
Continuous |
920s 901T (920s Jackpine) | CNRL to repair 72kV Cables | |
ATCO, ALBIAN | 13-Apr-25 08:00 | 23-Apr-25 16:00 | 10.33 Days
Continuous |
920s 901T (920s Jackpine), 919s 905 (919s Hartley), 920s 901 (920s Jackpine) | Work to be done in coordination with CNRL outage. 919s - 905 Breaker Complete 920s - 901 Breaker Complete 920s - 901T Major Testing |
|
ALTALINK | 14-Apr-25 07:00 | 16-Apr-25 18:00 | 2.46 Days
Continuous |
727A1L (303s Saddlebrook - 727L tap), 727AL (142s Magcan - 727L tap), 727L (65s High River - 727AL tap), 727L (678s Okotoks - 727AL tap), 142s 138kV Bus (142s Magcan), 142s C1 (142s Magcan) | Fire mitigation program to change arms and insulation along with dead end insulation on Structures 7, 11 & 20. | |
EPCOR | 14-Apr-25 07:00 | 23-May-25 17:00 | 39.42 Days
Continuous |
52s E2402 (52s East Industrial), 52s T2 (52s East Industrial) | East Industrial: Emergency Investigation and Possible Replacement of Secondary Cable and followed by TX2 Protection Upgrade Cutovers | |
Lethbridge, ALTALINK | 14-Apr-25 08:00 | 15-Apr-25 17:00 | 1.38 Days
Continuous |
674s 725W (674s Bowron), 725L (674s Bowron - 725BL tap), 674s T1 (674s Bowron) | 674s725LW Open end Outage to Test Trip Protections and install risers on 674s T1 New Transformer | |
ALTALINK | 14-Apr-25 08:00 | 15-Apr-25 17:00 | 1.38 Days
Continuous |
725L (674s Bowron - 725BL tap) | Test/Trip 674ss T1 Protections | |
SUNCOR | 14-Apr-25 08:00 | 20-Apr-25 20:00 | 6.5 Days
Continuous |
29EDD-56 29PT-191 (29EDD-56) | BP (Corey) - 29EDD56;29PT-191 SYSTEM;PM 5Y/10Y;29EDD56;29PP-41C SYSTEM;PM 5y | |
BCH | 14-Apr-25 09:00 | 14-Apr-25 17:00 | 8 Hours
Continuous |
1L275 (799s Coleman - BCH Natal) | NTL Station Upgrade Project. Test-energize new NTL 138kV ring 1L274-NEW BC maintenance does not affect the Alberta ATC | AB-BC |
ALTALINK, EPCOR | 14-Apr-25 09:00 | 17-Apr-25 17:30 | 3.35 Days
Continuous |
930L (37s North Calder - Poundmaker) | Epcor performing relay maintenance requiring line to be OOS. | |
ALTALINK, EPCOR | 14-Apr-25 09:30 | 17-Apr-25 17:00 | 3.31 Days
Continuous |
930L (37s North Calder - Poundmaker), PM2403 (Poundmaker), PM2404 (Poundmaker) | 930L Zone: Relay Maintenance | |
ATCO | 14-Apr-25 09:30 | 18-Apr-25 17:30 | 4.33 Days
Continuous |
730s STATCOM (730s Rycroft), 730s 705 (730s Rycroft) | SVC ANNUAL INSPECTION . | |
ATCO | 14-Apr-25 11:00 | 16-Apr-25 16:00 | 2.21 Days
Continuous |
827s SVC (827s Cranberry Lake) | 827s Spring SVC Maintenance | |
ATCO | 15-Apr-25 07:00 | 18-Apr-25 15:00 | 3.33 Days
Continuous |
7L101 (790s Poplar Hill - 944s Lowe Lake) | customer request | |
ATCO | 15-Apr-25 07:00 | 18-Apr-25 15:00 | 3.33 Days
Continuous |
7L101 (790s Poplar Hill - 944s Lowe Lake), 790s 705 (790s Poplar Hill) | PRC-005 - TRIP COIL TESTING | |
Lethbridge | 16-Apr-25 08:00 | 16-Apr-25 17:00 | 9 Hours
Continuous |
674s 725E (674s Bowron) | 674s725LE Open end Outage to Test Trip New Protections for 674s T1 New Transformer | |
ALTALINK | 16-Apr-25 08:00 | 16-Apr-25 17:00 | 9 Hours
Daily |
725L (674s Bowron - 725AL tap) | Test/Trip 674ss T1 Protections | |
ALTALINK, TRANSALTA | 16-Apr-25 08:00 | 16-Apr-25 17:00 | 9 Hours
Daily |
33s T2 (33s Spray) | maintenance | |
ALTALINK, TRANSALTA | 16-Apr-25 08:00 | 17-Apr-25 17:00 | 1.38 Days
Continuous |
33s T2 (33s Spray) | maintenance | |
ENMAX | 17-Apr-25 13:00 | 20-Apr-25 18:00 | 3.21 Days
Continuous |
2GSU-XF-001 (SS-25) | Power Factor Test - 25PT240-Z44, 25BUS240-25MCT2, 25 Sub Zone 44 PT Oil Leaks (North and South PT) | |
ENMAX, ALTALINK | 17-Apr-25 13:00 | 20-Apr-25 18:00 | 3.21 Days
Continuous |
1003L (74s Janet - SS-25) | Outage required to allow 2GSU 240kV bus isolation | |
SUNCOR | 21-Apr-25 08:00 | 27-Apr-25 20:00 | 6.5 Days
Continuous |
29EDD-1 Millennium 260kV West Bus 1, 29EDD-1 29EDD1s1052 (29EDD-1 Millennium) | (BP) Corey - 300347749 29EDD1S1052 Densimeter Replacement; 450501635 - 29EDD1;W260B1 WEST BUS SYSTEM; 5Y/10Y (PRC5) | |
EPCOR | 22-Apr-25 07:00 | 27-Apr-25 17:00 | 5.42 Days
Continuous |
805s T3 (805s Jasper), EP 805s J2404 (EP 805s Jasper), EP 805s J2405 (EP 805s Jasper) | Jasper: TX3 Zone Relay Maintenance and J2404 Bay Doble and Tap Changer Maintenance and TX3 PRD Repair | |
ENMAX | 22-Apr-25 08:00 | 30-Apr-25 16:00 | 8.33 Days
Continuous |
65.1TR (SS-65) | Tap Changer Inspection | |
ATCO | 22-Apr-25 09:00 | 23-Apr-25 17:30 | 1.35 Days
Continuous |
2075s ACF22 (2075s Newell) | FILTER BANK AC MAINTENANCE | |
ATCO | 22-Apr-25 09:30 | 22-Apr-25 12:00 | 2.5 Hours
Continuous |
790s 702 (790s Poplar Hill), 7L22 (790s Poplar Hill - 7L88 tap) | PRC-005 - TRIP COIL TESTING - BREAKER 702 @ 790S | |
ATCO | 22-Apr-25 09:30 | 02-May-25 17:30 | 10.33 Days
Continuous |
2029s 1201 (2029s Heathfield), 2029s 1204 (2029s Heathfield), 2029s 1207 (2029s Heathfield), 2029s 1214 (2029s Heathfield) | Will return to service on the weekend and the continue with the outage on Apr 28 PRC-005 - TRIP COIL TESTING - BREAKER 1201 @ 2029S PRC-005 - TRIP COIL TESTING - BREAKER 1214 @ 2029S PRC-005 - Relays & Aux Relays for 1200BS1 and bus breakers |
|
ALTALINK | 22-Apr-25 13:00 | 02-May-25 17:00 | 10.17 Days
Continuous |
163s T1 (163s Amoco Empress) | 163sT1 Oil Reclaim and Maintenance | |
ATCO | 22-Apr-25 13:30 | 22-Apr-25 16:00 | 2.5 Hours
Continuous |
939s 912 (939s Livock) | PRC-005 - TRIP COIL TESTING - BREAKER 912-NORTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 912-SOUTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 912-CENTER @ 939S |
|
ENMAX, ALTALINK | 23-Apr-25 08:00 | 24-Apr-25 16:00 | 1.33 Days
Continuous |
24.83L (74s Janet - SS-24) | Replace structure 70 on line. Breaker SF6 Gas Sample - 24B138-24.83 | |
ENMAX, ALTALINK | 23-Apr-25 08:00 | 24-Apr-25 16:00 | 1.33 Days
Continuous |
24.83L (74s Janet - SS-24) | Replace structure 70 on line. Breaker SF6 Gas Sample - 24B138-24.83 | |
ENMAX, ALTALINK | 23-Apr-25 08:00 | 26-Apr-25 14:00 | 3.25 Days
Continuous |
7.82L (42s Sarcee - SS-7) | Replace connection point on shield wire weld tabs on structure | |
ALTALINK | 23-Apr-25 09:00 | 23-Apr-25 16:00 | 7 Hours
Daily |
12s 952 (12s Heartland) | Breaker outage to implement flashover protection setting/wiring on breaker 12s and Implement Cross block function on T1. | |
ATCO | 23-Apr-25 09:30 | 23-Apr-25 11:30 | 2 Hours
Continuous |
939s 901 (939s Livock) | PRC-005 - TRIP COIL TESTING - BREAKER 901-NORTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 901-SOUTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 901-CENTER @ 939S |
|
ATCO | 23-Apr-25 11:31 | 23-Apr-25 14:00 | 2.48 Hours
Continuous |
939s 903 (939s Livock) | PRC-005 - TRIP COIL TESTING - BREAKER 903-NORTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 903-SOUTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 903-CENTER @ 939S |
|
ATCO | 23-Apr-25 14:01 | 23-Apr-25 16:30 | 2.48 Hours
Continuous |
939s 904 (939s Livock) | PRC-005 - TRIP COIL TESTING - BREAKER 904-NORTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 904-SOUTH @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 904-CENTER @ 939S |
|
ATCO | 24-Apr-25 09:00 | 24-Apr-25 17:30 | 8.5 Hours
Continuous |
2075s ACF23 (2075s Newell) | FILTER BANK AC MAINTENANCE | |
ATCO | 24-Apr-25 09:30 | 24-Apr-25 15:30 | 6 Hours
Continuous |
939s 910 (939s Livock), 939s 911 (939s Livock), 939s 903T (939s Livock) | PRC-005 - TRIP COIL TESTING - BREAKER 910 @ 939S PRC-005 - TRIP COIL TESTING - BREAKER 911 @ 939S Study Will indicate if we close 912 when available |
|
ATCO, ALBIAN | 24-Apr-25 10:00 | 02-May-25 12:00 | 8.08 Days
Continuous |
920s 902T (920s Jackpine), 919s 907 (919s Hartley), 920s 902 (920s Jackpine) | Work to be done in coordination with CNRL upon completion of their 920s outage on 901T 919s - 907 Breaker Complete 920s - 902 Breaker Complete 920s - 902T Major Testing |
|
ATCO | 25-Apr-25 09:00 | 25-Apr-25 17:30 | 8.5 Hours
Continuous |
2075s ACF24 (2075s Newell) | FILTER BANK AC MAINTENANCE | |
ATCO | 26-Apr-25 07:00 | 30-Apr-25 18:00 | 4.46 Days
Continuous |
7L86 (822s Wolf Lake - 1200s Foster Creek) | Cenovus is expanding their 1200S substation 26m to the south, toward structure 449. We will be relocating the conductor north of structure 449 to the new A-Frame structure that Cenovus is installing inside their substation. |
|
ENMAX, ALTALINK | 27-Apr-25 08:00 | 29-Apr-25 18:00 | 2.42 Days
Continuous |
833L (SS-2 - SS-12), 12.2TR (SS-12) | 12.2TR CT Replacement | |
EPCOR | 28-Apr-25 07:00 | 02-May-25 17:00 | 4.42 Days
Continuous |
T4 (Poundmaker), PM2403 (Poundmaker), PM2402 (Poundmaker), PM721 (Poundmaker) | Poundmaker: TX4 Zone Relay Maintenance | |
BCH | 28-Apr-25 09:00 | 30-Apr-25 17:00 | 2.33 Days
Continuous |
5L52 (BPA Custer - BCH Ingledow), 5CB5 (BCH Ingledow), 5CB6 (BCH Ingledow) | ING 5GD25, 5D25, 5CT25 and 5CVT5 INSPs | AB-BC |
ALTALINK, EPCOR | 28-Apr-25 09:00 | 30-Apr-25 17:30 | 2.35 Days
Continuous |
1056L (89s Ellerslie - 629s Argyll Transfer Station) | 1056L Zone Doble and Bellamy BA2 Pothead Leak Repair. EPCOR work | |
ATCO | 28-Apr-25 09:00 | 02-May-25 17:30 | 4.35 Days
Continuous |
2075s ACF21 (2075s Newell), 2075s 902T (2075s Newell), 2075S 930 (2075s Newell) | SVC TRANSFORMER MAINTENANCE, ANNUAL SVC MAINTENANCE, FIRE SUPPRESSION INSPECTION AND RECERTIFICATION. | |
BCH | 28-Apr-25 09:00 | 09-May-25 17:00 | 11.33 Days
Continuous |
T4 (BCH Natal) | ING 5GD25, 5D25, 5CT25 and 5CVT5 INSPs | AB-BC |
ALTALINK, EPCOR | 28-Apr-25 09:30 | 30-Apr-25 17:00 | 2.31 Days
Continuous |
1056L (89s Ellerslie - 629s Argyll Transfer Station), 240BA2 (629s Argyll Transfer Station - 814s Bellamy), 814s B2401 (814s Bellamy), 814s B2402 (814s Bellamy) | Argyll: 1056L Zone Doble and Bellamy BA2 Pothead Leak Repair | |
ENMAX, ALTALINK | 29-Apr-25 09:00 | 29-Apr-25 13:00 | 4 Hours
Continuous |
833L (SS-2 - SS-12) | Transfer from JMUX to JPAX circuits | |
ATCO | 29-Apr-25 09:00 | 08-May-25 12:00 | 9.13 Days
Continuous |
7L95 (715s Leming Lake - 889s Mahkeses), 7L66 (715s Leming Lake - 717s Ethel Lake), 715s 703 (715s Leming Lake), 715s 704 (715s Leming Lake) | Replacing 700PT1 wood structure with new steel structure and 7L95 protection upgrade. | |
ATCO | 29-Apr-25 10:30 | 02-May-25 15:30 | 3.21 Days
Continuous |
7L66 (715s Leming Lake - 717s Ethel Lake) | GOI needed for climbing inspection and deficiency repairs on 7L66 | |
ALTALINK, EPCOR | 30-Apr-25 07:00 | 02-May-25 17:00 | 2.42 Days
Continuous |
1045L (EP 805s Jasper - 1045AL tap), EP 805s J2407 (EP 805s Jasper), EP 805s J2406 (EP 805s Jasper) | 1045L: Insulator Repair | |
ALTALINK, EPCOR | 30-Apr-25 07:00 | 02-May-25 17:30 | 2.44 Days
Continuous |
1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) | Epcor insulator repair | |
ALTALINK | 30-Apr-25 08:00 | 30-Apr-25 14:00 | 6 Hours
Daily |
320p 552 (320p Keephills), 320p 652 (320p Keephills), 190L (17s Benalto - 320p Keephills) | Move Summated 190L CT from 320p552 & 320p652 to next available slot on the PMU to make room for a new Card in slot B. Changes requested at the project level to allow the PMUs in 240kV to operate separately from 500kV PMU. | |
ENMAX, ALTALINK | 30-Apr-25 08:00 | 30-Apr-25 16:00 | 8 Hours
Continuous |
21.80L (42s Sarcee - SS-21), 21B138-21.80 (SS-21) | HV Breaker Maintenance - 21B138-21.80 | |
ENMAX, ALTALINK | 30-Apr-25 08:00 | 30-Apr-25 16:00 | 8 Hours
Daily |
21.80L (42s Sarcee - SS-21) | HV Breaker Maintenance - 21B138-21.80 | |
ENMAX, ALTALINK | 30-Apr-25 08:00 | 02-May-25 15:00 | 2.29 Days
Continuous |
832L (SS-10 - SS-12), 12.1TR (SS-12) | 12.1TR CT Replacement | |
ATCO | 30-Apr-25 09:30 | 01-May-25 17:30 | 1.33 Days
Continuous |
892s 702 (892s Ribstone Creek), 7L696 (508s Lakesend - 892s Ribstone Creek) | BREAKER SF6 GL312 COMPLETE TESTING - BREAKER 702 @ 892S | |
ALTALINK, TRANSALTA | 30-Apr-25 10:00 | 30-Apr-25 14:00 | 4 Hours
Daily |
250p T1 (250p Bighorn Plant) | maintenance | |
ENMAX, ALTALINK | 30-Apr-25 14:00 | 30-May-25 14:00 | 30 Days
Continuous |
1109L (SS-25 - SS-65) | Complete Termination of new Cables on 1109L str 1. | |
ENMAX, ALTALINK | 30-Apr-25 14:00 | 30-May-25 14:00 | 30 Days
Continuous |
1109L (SS-25 - SS-65) | Altalink outage. Complete Termination of new Cables on 1109L str 1. | |
ENMAX, ALTALINK | 01-May-25 08:00 | 01-May-25 16:00 | 8 Hours
Continuous |
693L (42s Sarcee - SS-10), 10B138-693 (SS-10) | HV Breaker Maintenance - 10B138-693 | |
ENMAX, ALTALINK | 01-May-25 08:00 | 01-May-25 16:00 | 8 Hours
Daily |
693L (42s Sarcee - SS-10) | HV Breaker Maintenance - 10B138-693 | |
BCH | 01-May-25 09:00 | 03-May-25 17:00 | 2.33 Days
Continuous |
5L51 (BPA Custer - BCH Ingledow) | ING 5GD23, 5D23, 5CT23 and 5CVT3 INSPs | AB-BC |
ALTALINK, TRANSALTA | 01-May-25 10:00 | 01-May-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
ENMAX, ALTALINK | 02-May-25 08:00 | 02-May-25 16:00 | 8 Hours
Continuous |
832L (SS-10 - SS-12), 10B138-832 (SS-10) | HV Breaker Maintenance - 10B138-832 | |
ENMAX, ALTALINK | 02-May-25 08:00 | 02-May-25 16:00 | 8 Hours
Daily |
832L (SS-10 - SS-12) | HV Breaker Maintenance - 10B138-832 | |
ATCO, ALBIAN | 02-May-25 08:00 | 13-May-25 08:00 | 11 Days
Continuous |
919s 906 (919s Hartley) | CNRL Request to isolate 906 | |
SUNCOR | 03-May-25 09:00 | 15-May-25 16:00 | 12.29 Days
Continuous |
29EDD-1 T2 (29EDD-1 Millennium) | BP-29EDD-1 - TA - T2 OLTC Maintenance and Testing; 29EDD-1 T2 72LV Arrester replacement (CG) 300199837, 300203566 |
|
EPCOR | 05-May-25 07:00 | 09-May-25 17:00 | 4.42 Days
Continuous |
330p 1207 (330p Genesee), 330p 1208 (330p Genesee), 330P GT3 (330p Genesee) | 12GT3D Disconnect Repair | |
EPCOR | 05-May-25 07:00 | 17-May-25 17:00 | 12.42 Days
Continuous |
CV5 (EP 511s Victoria - 557s Castle Downs), 557s CDDS9 (557s Castle Downs), 557s CDDS12 (557s Castle Downs), EP 511s V2401 (EP 511s Victoria), EP 511s Victoria T5 (EP 511s Victoria), RV728 (Rossdale), EP 511s V727 (EP 511s Victoria) | CV5: CV5 Zone Doble and Disconnect Maintenance and Victoria TX5 Doble and UGT Manhole Inspections | |
Lethbridge | 05-May-25 08:00 | 05-May-25 12:00 | 4 Hours
Continuous |
674s 725W (674s Bowron) | 674s725LW Open End Outage To Energize New 674s T1 Transformer | |
ALTALINK | 05-May-25 08:00 | 05-May-25 12:00 | 4 Hours
Daily |
725L (674s Bowron - 725BL tap) | Test/Trip 674ss T1 Protections | |
ENMAX | 05-May-25 08:00 | 09-May-25 16:00 | 4.33 Days
Continuous |
162.1TR (SS-162), 240kV North Bus (SS-162) | HV SW Maint. 162SW131, 162SW141, MD240-162.1TR. Oil Sampling Bushing, MT, TC. | |
BCH | 05-May-25 09:00 | 20-May-25 17:00 | 15.33 Days
Continuous |
2L112 (BPA Boundary - BCH Nelway) | NLY 2SA2 2SA12 Replacement | AB-BC |
ATCO | 05-May-25 09:30 | 16-May-25 17:30 | 11.33 Days
Continuous |
2029s 1203 (2029s Heathfield), 2029s 1206 (2029s Heathfield), 2029s 1209 (2029s Heathfield), 2029s 1215 (2029s Heathfield) | PRC-005 - TRIP COIL TESTING - BREAKER 1215 @ 2029S PRC-005 - Relays & Aux Relays for 1200BS2 and bus breakers Return on weekends |
|
ATCO, ALBIAN | 05-May-25 12:00 | 07-May-25 16:00 | 2.17 Days
Continuous |
919s 906 (919s Hartley) | 906 Breaker Complete testing. To be done in coordination with CNRL outage on 901T. | |
ALTALINK | 05-May-25 13:00 | 08-May-25 17:00 | 3.17 Days
Continuous |
320p T6 (320p Keephills) | T6 outage to install new Camlin Bushing Monitors | |
ALTALINK | 06-May-25 07:00 | 06-May-25 17:00 | 10 Hours
Daily |
83s T3 (83s Taber), 83s 138kV East Bus (83s Taber), 83s C1 (83s Taber), 507L (83s Taber - 257s Hull), 83s 61 (83s Taber), 83s 64 (83s Taber), 83s 507 (83s Taber) | Change CT ratios for contributions to 87/138B relays from 800:5 to 1200:5. | |
ALTALINK | 06-May-25 08:00 | 06-May-25 16:00 | 8 Hours
Daily |
89s T1 (89s Ellerslie), 89s Ellerslie 240kV Bus 1, 1140L (89s Ellerslie - 289s Saunders Lake) | Replace PCB lighting in 240kV bay with LEDs | |
ATCO | 06-May-25 08:30 | 09-May-25 16:00 | 3.31 Days
Continuous |
930s SVC (930s Arcenciel) | Spring Maintenance SVC | |
ALTALINK | 07-May-25 07:00 | 07-May-25 17:00 | 10 Hours
Daily |
83s C2 (83s Taber), 83s T1 (83s Taber), 83s 65 (83s Taber), 83s 67 (83s Taber), 83s 138kV West Bus (83s Taber), 83s 172W (83s Taber), 172L (83s Taber - 172EL tap), 83s 610 (83s Taber), 610L (83s Taber - 336s Fincastle) | Change CT ratios for contributions to 87/138B relays from 800:5 to 1200:5. | |
ALTALINK | 07-May-25 13:30 | 07-May-25 18:00 | 4.5 Hours
Daily |
245s 777X (245s Seebe), 777L (48s Pocaterra - 245s Seebe) | 777L Replacing 138kV Susp. Insulators @ 245s | |
ATCO | 08-May-25 11:00 | 08-May-25 16:00 | 5 Hours
Continuous |
9L101 (957s McClelland - 2005s Secord) | Repair - 957S 900SST1 Leak Severity | |
ATCO | 08-May-25 12:01 | 13-May-25 10:00 | 4.92 Days
Continuous |
7L95 (715s Leming Lake - 889s Mahkeses), 715s 704 (715s Leming Lake) | 7L95 protection upgrade. | |
ALTALINK | 08-May-25 13:30 | 08-May-25 18:00 | 4.5 Hours
Daily |
245s 87W (245s Seebe), 87L (2s Kananaskis - 245s Seebe) | 87L Replacing 138kV Susp. Insulators @ 245s | |
ENMAX, ALTALINK | 10-May-25 12:00 | 10-May-25 18:00 | 6 Hours
Continuous |
7.82L (42s Sarcee - SS-7), 7B138-7.82 (SS-7), 7B138-7BT3 (SS-7), 7.2TR (SS-7) | Summer Substation Washing | |
EPCOR | 12-May-25 07:00 | 17-May-25 17:00 | 5.42 Days
Continuous |
805s T4 (805s Jasper), EP 805s J2405 (EP 805s Jasper), EP 805s J2406 (EP 805s Jasper) | Jasper: TX4 Zone Relay Maintenance and JDS10 Repair (045351) and TX4 Tap Changer Maintenance | |
EPCOR | 12-May-25 07:00 | 17-May-25 17:00 | 5.42 Days
Continuous |
330p 1207 (330p Genesee), 330p 1204 (330p Genesee), 330p 1201 (330p Genesee), 330P 12TC1 (330p Genesee), 330p 1210 (330p Genesee), 330p 1214 (330p Genesee), 330p 805 (330p Genesee) | Genesee: 500kV BUS 1 Yard Lighting Upgrade. Arranged w/CPC. (Poles #10, 11, 12, 13) | |
ATCO | 12-May-25 10:00 | 15-May-25 16:00 | 3.25 Days
Continuous |
7L89 (700s Bonnyville - 721s La Corey), 700s 703 (700s Bonnyville) | PRC-005 RELAY TESTING, RTXP TEST SWITCH REPLACEMENTS, PRC-005 TRIP COIL TESTING | |
ATCO | 12-May-25 10:00 | 15-May-25 16:00 | 3.25 Days
Continuous |
732s 901T (732s Mitsue) | TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 732S TRANSFORMER CLASS1 TAP CHANGER - 901T @ 732S Replace/repair densimeter glass on BKR 701 at 732S Mitsue |
|
ALTALINK | 13-May-25 07:00 | 15-May-25 17:00 | 2.42 Days
Continuous |
320p T1 (320p Keephills), 320p T4 (320p Keephills), 320p 138kV Bus (320p Keephills) | Iconic to replace 320p92. Altalink crew performing maintenance on 320p400 and 320p401. | |
ALTALINK | 13-May-25 08:00 | 22-May-25 17:00 | 9.38 Days
Continuous |
163s T2 (163s Amoco Empress) | 163sT2 Oil Reclaim and Maintenance | |
ATCO, FMGW | 13-May-25 08:30 | 15-May-25 18:00 | 2.4 Days
Continuous |
1024s PT-6001 (1024s Granlea), 1024s PT-6002 (1024s Granlea), 1024s 952-600001 (1024s Granlea), 1024s PS-6005 (1024s Granlea), 1024s PS-6006 (1024s Granlea), 1024s PS-6007 (1024s Granlea), 1024s PS-6008 (1024s Granlea) | preform transformer leak repairs and inspections. 34kv bus bird proofing install. | |
ATCO, ALBIAN | 14-May-25 08:00 | 15-May-25 08:00 | 24 Hours
Continuous |
919s 908 (919s Hartley) | CNRL Request COG to open 908 breaker and 902TD in the Hartley 919S substation at CNRL Albian Sands. This will be an isolation point for our upcoming outage to permit work on supply side breakers/relays on our TP-2. |
|
BCH | 14-May-25 09:00 | 14-May-25 17:00 | 8 Hours
Continuous |
2L112 (BPA Boundary - BCH Nelway) | Maintenance on NLY T2 Non-electrical PM, 2CB7 and 2CB8 BFPN | AB-BC |
ATCO | 14-May-25 09:30 | 15-May-25 17:30 | 1.33 Days
Continuous |
790s 704 (790s Poplar Hill), 790s 703T (790s Poplar Hill) | PRC-005 - TRIP COIL TESTING - BREAKER 704 @ 790S BREAKER SF6 HPL COMPLETE TESTING - 704 @ 790S |
|
ALTALINK | 14-May-25 23:00 | 15-May-25 03:00 | 4 Hours
Continuous |
62s T1 (62s Brazeau Plant) | maintenance | |
ALTALINK | 15-May-25 03:00 | 15-May-25 07:00 | 4 Hours
Daily |
62s T2 (62s Brazeau Plant) | maintenance | |
ENMAX, ALTALINK | 17-May-25 08:00 | 17-May-25 12:00 | 4 Hours
Continuous |
12B138-833L (SS-12), 833L (SS-2 - SS-12), 12.2TR (SS-12) | Summer Substation Washing | |
ENMAX, ALTALINK | 17-May-25 12:00 | 17-May-25 18:00 | 6 Hours
Continuous |
12B138-832L (SS-12), 832L (SS-10 - SS-12), 12.1TR (SS-12) | Summer Substation Washing | |
SUNCOR | 18-May-25 07:00 | 21-May-25 17:00 | 3.42 Days
Continuous |
635EDD-1000 144kV Bus 635PP-1000 (635EDD-1000), 635EDD-1000 635PT-1000 (635EDD-1000), 635EDD-1000 635PS-1002 (635EDD-1000), 635EDD-1000 635PS-1004 (635EDD-1000), 635EDD-1000 635PS-1010 (635EDD-1000), 635EDD-1000 635PS-1022 (635EDD-1000), 635EDD-1000 635PS-1026 (635EDD-1000), 635EDD-1000 635PS-1030 (635EDD-1000), 635EDD-1000 635PS-1016 (635EDD-1000), 635EDD-1000 635-752-635PT-1000 (635EDD-1000) | 635PP-1000 bus maintenance | |
ALTALINK, EPCOR | 18-May-25 07:00 | 25-May-25 17:00 | 7.42 Days
Continuous |
1055L (629s Argyll Transfer Station - 816s Petrolia), 816s P2402 (816s Petrolia), 816s P2403 (816s Petrolia) | 1055L: Pole Refurbishment and Petrolia Zone Doble and PDS4/PDS5/PDS11 Disconnect Maintenance | |
ENMAX, ALTALINK | 18-May-25 08:00 | 18-May-25 12:00 | 4 Hours
Continuous |
693L (42s Sarcee - SS-10), 10.2TR (SS-10), 10B138-693 (SS-10) | Summer Substation Washing | |
ENMAX, ALTALINK | 18-May-25 12:00 | 18-May-25 18:00 | 6 Hours
Continuous |
832L (SS-10 - SS-12), 10.1TR (SS-10), 10B138-832 (SS-10) | Summer Substation Washing | |
EPCOR | 19-May-25 07:00 | 20-May-25 17:00 | 1.42 Days
Continuous |
330p 1202 (330p Genesee) | Genesee: 1202 Bay Yard Lighting Upgrade (Pole #7) | |
EPCOR | 20-May-25 07:00 | 24-May-25 17:00 | 4.42 Days
Continuous |
1139L (367s Harry Smith - EP Riverview), RW2403 (EP Riverview), RW2405 (EP Riverview) | Riverview: 1139L Zone Doble and RWDS6/RWDS9/RWDS12 Disconnect Maintenance and Relay Maintenance | |
ALTALINK | 20-May-25 07:00 | 24-May-25 17:00 | 4.42 Days
Continuous |
367s 1139 (367s Harry Smith) | Riverview: 1139L Zone Doble and RWDS6/RWDS9/RWDS12 Disconnect Maintenance and Relay Maintenance | |
EPCOR | 20-May-25 07:00 | 30-May-25 17:00 | 10.42 Days
Continuous |
657s T1 (657s Summerside) | Summerside: TX1 DGA LCR | |
ALTALINK, ENEL | 20-May-25 07:30 | 22-May-25 16:30 | 2.38 Days
Continuous |
205s T1 (205s Castle Rock Ridge) | Full site outage to facilitate 240kV CTPT replacement, MPT leak repair, and Annual Maintenance checklist items. | |
BCH | 20-May-25 09:00 | 20-May-25 17:00 | 8 Hours
Continuous |
2L113 (BCH Cranbrook - BCH Natal) | Purpose: Inspection BC maintenance does not affect the Alberta ATC | AB-BC |
BCH | 20-May-25 09:00 | 22-May-25 17:00 | 2.33 Days
Continuous |
2L113 (BCH Cranbrook - BCH Natal) | Purpose: Replace end-of-life timbers BC maintenance does not affect the Alberta ATC | AB-BC |
BCH | 20-May-25 09:00 | 23-May-25 17:00 | 3.33 Days
Continuous |
1L274 (BCH Elkford tap - BCH Line Creek tap) | Purpose: Replace structures BC maintenance does not affect the Alberta ATC
|
AB-BC |
BCH | 20-May-25 09:00 | 30-May-25 17:00 | 10.33 Days
Continuous |
T3 (BCH Natal) | NTL Station Upgrade Project. Reconfigure NTL T3 bus connection and cut over to new station equipment BC maintenance does not affect the Alberta ATC | AB-BC |
BCH | 20-May-25 10:00 | 20-May-25 18:00 | 8 Hours
Continuous |
2L113 (BCH Cranbrook - BCH Natal) | Placeholder NTL 2D21 & 2L113 OOS for 2D21 control cutover and testing. For Natal Substation rebuild project. BC maintenance does not affect the Alberta ATC | AB-BC |
ATCO | 20-May-25 11:00 | 29-May-25 17:00 | 9.25 Days
Continuous |
7L199 (347s AML Fox Creek - 741s ATC Fox Creek), 741s 702 (741s ATC Fox Creek) | Fox Creek Substation Upgrade project. Demo old cables, install and terminate new cables, cut over to new protection. |
|
ALTALINK | 20-May-25 11:00 | 29-May-25 17:00 | 9.25 Days
Continuous |
199L (347s AML Fox Creek - 741s ATC Fox Creek) | Fox Creek Substation Upgrade project. Demo old cables, install and terminate new cables, cut over to new protection. | |
EPCOR | 21-May-25 07:00 | 22-May-25 17:00 | 1.42 Days
Continuous |
330p 1205 (330p Genesee) | Genesee: 1205 Bay Yard Lighting Upgrade (Pole #8) | |
ATCO, CNRL | 21-May-25 09:00 | 21-May-25 12:30 | 3.5 Hours
Continuous |
847s 902 (847s Muskeg River) | PRC-005 - TRIP COIL TESTING | |
ATCO, CNRL | 21-May-25 13:00 | 21-May-25 17:00 | 4 Hours
Continuous |
847s 903 (847s Muskeg River) | PRC-005 - TRIP COIL TESTING | |
ATCO, CNRL | 22-May-25 09:00 | 22-May-25 12:30 | 3.5 Hours
Continuous |
847s 904 (847s Muskeg River) | PRC-005 - TRIP COIL TESTING | |
ATCO, CNRL | 22-May-25 13:00 | 22-May-25 17:00 | 4 Hours
Continuous |
847s 901 (847s Muskeg River) | PRC-005 - TRIP COIL TESTING | |
EPCOR | 23-May-25 07:00 | 24-May-25 17:00 | 1.42 Days
Continuous |
330p 1208 (330p Genesee) | Genesee: 1208 Bay Yard Lighting Upgrade (Pole #9) | |
SUNCOR | 25-May-25 07:00 | 28-May-25 17:00 | 3.42 Days
Continuous |
635EDD-1000 144kV Bus 635PP-1001 (635EDD-1000), 635EDD-1000 635PT-1001 (635EDD-1000), 635EDD-1000 635-752-635PT-1001 (635EDD-1000), 635EDD-1000 635PS-1003 (635EDD-1000), 635EDD-1000 635PS-1009 (635EDD-1000), 635EDD-1000 635PS-1015 (635EDD-1000), 635EDD-1000 635PS-1021 (635EDD-1000), 635EDD-1000 635PS-1025 (635EDD-1000), 635EDD-1000 635PS-1029 (635EDD-1000), 635EDD-1000 635PS-1035 (635EDD-1000) | 635PP-1001 bus maintenance | |
ENMAX, ALTALINK | 25-May-25 08:00 | 31-May-25 16:00 | 6.33 Days
Continuous |
37.2TR (SS-37), 37.82L (74s Janet - SS-37) | 37sub Capacity Upgrade. Accommodate the commissioning of the new relays (Z31/Z32 bus diff, ASW and BMR-BT5). | |
ALTALINK, EPCOR | 26-May-25 07:00 | 01-Jun-25 17:00 | 6.42 Days
Continuous |
1056L (89s Ellerslie - 629s Argyll Transfer Station) | 1056L: Pole Refurbishment | |
ALTALINK, EPCOR | 26-May-25 07:00 | 01-Jun-25 17:00 | 6.42 Days
Continuous |
1056L (89s Ellerslie - 629s Argyll Transfer Station) | Pole Refurbishment | |
EPCOR | 26-May-25 07:00 | 06-Jun-25 17:00 | 11.42 Days
Continuous |
805s T1 (805s Jasper), 72JM18 (EP 805s Jasper - Meadowlark), 72JW19 (EP 805s Jasper - Woodcroft), EP 805s J724 (EP 805s Jasper), EP 805s J722 (EP 805s Jasper), EP 805s J2401 (EP 805s Jasper) | Jasper: TX1 Zone, JM18 Zone, Doble and JDS15/JDS21/JAB5/JDS3/JDS2/JDS29/JDS16/MDS1 Disconnect Maintenance, and TX1, J2403, J2408 Relay Maintenance | |
ATCO | 26-May-25 09:00 | 08-Jun-25 17:30 | 13.35 Days
Continuous |
2029S BUILDING VALVE HALL, 2029s 1205 (2029s Heathfield), 2029s 1206 (2029s Heathfield) | Annual EATL outage at 2075s & 2029s. 2029s & 2075s AC & DC O&M. USE 2-70215 FOR 13L50 GOI USE 2-70216 FOR 2029s GOI USE 2-70217 FOR 2075s GOI |
|
ATCO | 26-May-25 09:00 | 08-Jun-25 17:30 | 13.35 Days
Continuous |
2075S BUILDING VALVE HALL, 2075s 916 (2075s Newell), 2075s 917 (2075s Newell) | Annual EATL outage at 2075s & 2029s.
2029s & 2075s AC & DC O&M. USE 2-70215 FOR 13L50 GOI USE 2-70216 FOR 2029s GOI USE 2-70217 FOR 2075s GOI |
|
ATCO | 26-May-25 09:00 | 08-Jun-25 17:30 | 13.35 Days
Continuous |
13L50 (DC LINK), 13L50 (2029s Heathfield - 2075s Newell) | Annual EATL outage at 2075s & 2029s. 2029s & 2075s AC & DC O&M. USE 2-70215 FOR 13L50 GOI USE 2-70216 FOR 2029s GOI USE 2-70217 FOR 2075s GOI |
|
ATCO | 26-May-25 10:00 | 30-May-25 17:30 | 4.31 Days
Continuous |
813s 901T (813s Little Smoky) | PRC-005 - SPR TESTING - TRANSFORMER 901T @ 813S TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 813S TRANSFORMER CLASS1 TAP CHANGER - 901T @ 813S PRC-005 - TRIP COIL TESTING - BREAKER 501 @ 813S BREAKER VACUUM VA8012 COMPLETE TESTING - 501 @ 813S |
|
ALTALINK | 26-May-25 11:30 | 29-May-25 17:30 | 3.25 Days
Continuous |
102s SVC (102s Langdon), 102s T4 (102s Langdon) | 102sT4 PRC5, Doble and replace PD monitor. | |
ALTALINK | 26-May-25 12:30 | 29-May-25 18:00 | 3.23 Days
Continuous |
410s T2 (410s Josephburg) | Replace H2 bushing, doble, maint, oil leaks | |
ALTALINK | 26-May-25 13:30 | 29-May-25 17:30 | 3.17 Days
Continuous |
310p 452 (310p Sundance) | Replacement of 240kV Koncar CTs associated with 310p452 | |
ALTALINK, TRANSALTA | 27-May-25 23:00 | 29-May-25 07:00 | 1.33 Days
Continuous |
250p T1 (250p Bighorn Plant) | maintenance | |
ALTALINK, TRANSALTA | 28-May-25 07:00 | 29-May-25 07:00 | 24 Hours
Continuous |
250p T2 (250p Bighorn Plant) | maintenance | |
ATCO | 28-May-25 09:00 | 29-May-25 14:00 | 29 Hours
Continuous |
717s 702 (717s Ethel Lake), 7L66 (715s Leming Lake - 717s Ethel Lake) | breaker maintenance | |
Saskpower | 28-May-25 09:00 | 29-May-25 18:00 | 1.38 Days
Continuous |
SASK POWER P2C | maintenance | AB-SK |
ATCO | 29-May-25 14:01 | 29-May-25 16:00 | 119 Mins
Continuous |
717s 701 (717s Ethel Lake), 7L28 (717s Ethel Lake - 846s Grand Centre) | PRC-005 TRIP COIL TESTING | |
ENMAX, ALTALINK | 30-May-25 14:00 | 09-Jun-25 14:00 | 10 Days
Continuous |
1109L (SS-25 - SS-65) | Cable testing, close cable open points on 1109L and salvage Temp O/H 1109L | |
ENMAX, ALTALINK | 30-May-25 14:00 | 09-Jun-25 14:00 | 10 Days
Continuous |
240kV West Bus (SS-25), 1109L (SS-25 - SS-65) | Altalink outage. Cable testing, close cable open points on 1109L and salvage Temp O/H 1109L. Expanding zone to include 1109L C25s Bus. Enmax grounding required, and Enmax to close 1109L risers removed from bus to potthead. | |
EPCOR | 02-Jun-25 07:00 | 08-Jun-25 17:00 | 6.42 Days
Continuous |
816s P2401 (816s Petrolia), 816s P2402 (816s Petrolia), 816s T1 (816s Petrolia) | Petrolia: TX1 Zone Doble and Disconnect Maintenance | |
ALTALINK | 02-Jun-25 07:30 | 06-Jun-25 16:30 | 4.38 Days
Continuous |
AML 511s 240kV ACF 1 Bus (511s Crossings) | 511s1652 Breaker Maintenance, SVC+ Inspections and Maintenance | |
ATCO, CNRL | 02-Jun-25 08:00 | 08-Jun-25 17:00 | 6.38 Days
Continuous |
859s 701T (859s Primrose), 859s 701TD (859s Primrose), 859s 704 (859s Primrose), 859s 701 (859s Primrose) | Perform maintenance activities in 859S. | |
ALTALINK, EPCOR | 02-Jun-25 09:30 | 02-Jun-25 17:00 | 7.5 Hours
Daily |
1057L (89s Ellerslie - 657s Summerside), 89s 452 (89s Ellerslie), 89s 352 (89s Ellerslie) | Summerside: 1057L Zone Doble and SUDS1/SUDS3/SUDS9 Disconnect Maintenance | |
ALTALINK, EPCOR | 02-Jun-25 09:30 | 05-Jun-25 17:00 | 3.31 Days
Continuous |
1057L (89s Ellerslie - 657s Summerside), 657s SU2402 (657s Summerside), 657s SU2401 (657s Summerside) | Summerside: 1057L Zone Doble and SUDS1/SUDS3/SUDS9 Disconnect Maintenance | |
ALTALINK, BCH | 03-Jun-25 06:00 | 03-Jun-25 19:00 | 13 Hours
Continuous |
1L274 (BCH Natal - BCH Line Creek tap), T1 (BCH Natal), T2 (BCH Natal) | NTL Station Upgrade Project. Extend 1L274 to new NTL section; isolate NTL T1 & T2 section
NTL T1, NTL T2 (permanent removal) |
AB-BC |
ALTALINK | 03-Jun-25 07:00 | 05-Jun-25 18:00 | 2.46 Days
Daily |
861L (71s Lamoureux - 258s Dow Hydrocarbons) | Maintenance and component replacements on various structures between 4-55. | |
ALTALINK, ENEL | 03-Jun-25 07:30 | 05-Jun-25 16:30 | 2.38 Days
Continuous |
205s T2 (205s Castle Rock Ridge) | Full site outage to facilitate 240kV CTPT replacement, MPT leak repair, and Annual Maintenance checklist items. | |
EPCOR | 09-Jun-25 07:00 | 15-Jun-25 17:00 | 6.42 Days
Continuous |
H726 (EP Hardisty), EP 803s L721 (EP 803s Lambton), S724 (Strathcona), S723 (Strathcona), EP 803s T3 (EP 803s Lambton) | Lambton/Strathcona/Hardisty: LH8 Zone Doble and Relay Maintenance, LS24 Zone Doble, Strathcona TX3 Doble, LDS13/SDS10/SDS8/SDS9/SAB3/HDS13 Disconnect Maintenance | |
EPCOR | 09-Jun-25 07:00 | 20-Jun-25 17:00 | 11.42 Days
Continuous |
657s T2 (657s Summerside) | Summerside: TX2 DGA LCR | |
EPCOR | 09-Jun-25 07:00 | 27-Jun-25 17:00 | 18.42 Days
Continuous |
557s T1 (557s Castle Downs) | Castle Downs S/S Tx1 bay outage | |
EPCOR | 09-Jun-25 07:00 | 27-Jun-25 17:00 | 18.42 Days
Continuous |
52s E2401 (52s East Industrial), 52s T1 (52s East Industrial) | East Industrial: TX1 Protection Upgrade Cutovers | |
ATCO | 09-Jun-25 09:30 | 10-Jun-25 17:30 | 1.33 Days
Continuous |
801s 902 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - BREAKER 902 @ 801S | |
ATCO | 09-Jun-25 12:00 | 12-Jun-25 17:00 | 3.21 Days
Continuous |
951s SVC (951s Thickwood) | Semi Annual inspection & maintenance | |
ATCO | 11-Jun-25 09:30 | 12-Jun-25 17:30 | 1.33 Days
Continuous |
801s 903 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - BREAKER 903 @ 801S | |
EPCOR | 16-Jun-25 07:00 | 20-Jun-25 17:00 | 4.42 Days
Continuous |
1164L (816s Petrolia - EP Riverview), RW2402 (EP Riverview), RW2401 (EP Riverview), 816s P2403 (816s Petrolia), 816s P2404 (816s Petrolia) | Riverview: 1164L Zone Doble and Relay Maintenance | |
ENMAX, ALTALINK | 16-Jun-25 08:00 | 19-Jun-25 16:00 | 3.33 Days
Continuous |
28.80L (42s Sarcee - SS-28) | HV SW Replacement 28SW80 | |
ATCO | 16-Jun-25 10:00 | 20-Jun-25 17:30 | 4.31 Days
Continuous |
959s 901T (959s Lanfine) | TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 959S TRANSFORMER CLASS1 TAP CHANGER - 901T @ 959S Qualitrol ITM/ETM Settings Updates - 901T Updates at 959s Lanfine |
|
ATCO | 16-Jun-25 12:00 | 20-Jun-25 16:00 | 4.17 Days
Continuous |
885s 902T (885s McMillan) | 885S McMillan Replace 1 Single Phase Reactor in 501R 902T Major & Tap Changer Refurbishment |
|
ALTALINK | 16-Jun-25 12:30 | 20-Jun-25 16:30 | 4.17 Days
Continuous |
650s SVC (650s Hansman Lake), 650s T3 (650s Hansman Lake) | Maintenance on SVC. SVC resistor replacement. T3 maintenance. Fire System inspection and testing. Replace palmer insulators that are failing. | |
ALTALINK | 17-Jun-25 09:00 | 21-Jun-25 09:00 | 4 Days
Continuous |
163s T1 (163s Amoco Empress) | Plains to unbolt/re-connect cabling from Altalink buss into plains substation for cable testing. Unbolt cabling/re- connect T1X, T1Y NGR feeds for cable and NGR testing. Scaffold to be built in yard behind Plains substation to access cable entries. | |
ATCO | 23-Jun-25 09:30 | 27-Jun-25 17:30 | 4.33 Days
Continuous |
757s 912T (757s Battle River) | TRANSFORMER CLASS1 MAJOR TESTING - 912T @ 757S BREAKER MIN OIL HPF COMPLETE TESTING - 710 @ 757S |
|
ATCO | 23-Jun-25 10:00 | 27-Jun-25 17:30 | 4.31 Days
Continuous |
963s 901T (963s Coyote Lake), 7L128 (963s Coyote Lake - 7LA128 tap), 9L29 (946s Oakland - 963s Coyote Lake) | TRANSFORMER CLASS1 TAP CHANGER - 901T @ 963S TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 963S Qualitrol ITM/ETM Settings Updates - 901T Updates at 963s Coyote Lake |
|
ATCO | 23-Jun-25 12:00 | 04-Jul-25 16:00 | 11.17 Days
Continuous |
826s 901T (826s Marguerite Lake) | transformer major maintenance | |
ALTALINK | 25-Jun-25 07:00 | 25-Jun-25 16:00 | 9 Hours
Daily |
413L (239s Castle River - 632s Russell) | We need to complete maintenance on 239s138DS4 at Castle River and need to request an advice on 413L.. | |
ENMAX, ALTALINK | 27-Jun-25 08:00 | 03-Jul-25 16:00 | 6.33 Days
Continuous |
50L (44s Bearspaw Plant - SS-21) | HV SW Replacement. 37SW84, 37SW85, 37SW86 | |
EPCOR | 30-Jun-25 07:00 | 18-Jul-25 17:00 | 18.42 Days
Continuous |
557s T2 (557s Castle Downs) | Castle Downs S/S Tx2 Bay Outage | |
ATCO | 30-Jun-25 09:30 | 30-Jun-25 17:30 | 8 Hours
Continuous |
801s 907 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - 905 @ 801S | |
EPCOR, ALTALINK | 02-Jul-25 07:00 | 06-Jul-25 17:00 | 4.42 Days
Continuous |
665s D2401 (665s Dome), 665s D2404 (665s Dome), 665s T3 (665s Dome), 665s D721 (665s Dome), 72DS26 (665s Dome - Strathcona), 909L (89s Ellerslie - 665s Dome), S721 (Strathcona) | Dome: TX3/DS26/909L Zone Doble and DDS1/DDS12/DDS13/DDS17/SDS3 Disconnect Maintenance and D721/D2404 Breaker Maintenance | |
ALTALINK, EPCOR | 02-Jul-25 07:00 | 06-Jul-25 17:00 | 4.42 Days
Continuous |
909L (89s Ellerslie - 665s Dome) | TX3/DS26/909L Zone Doble and DDS1/DDS12/DDS13/DDS17/SDS3 Disconnect Maintenance and D721/D2404 Breaker Maintenance | |
ATCO | 02-Jul-25 09:30 | 03-Jul-25 17:30 | 1.33 Days
Continuous |
801s 905 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - 905 @ 801S | |
ATCO | 02-Jul-25 10:30 | 04-Jul-25 15:30 | 2.21 Days
Continuous |
7L91 (715s Leming Lake - 826s Marguerite Lake) | GOI required for climbing inspection on 7L91 and for deficiency repair. | |
ALTALINK | 02-Jul-25 23:00 | 03-Jul-25 03:00 | 4 Hours
Continuous |
62s T1 (62s Brazeau Plant) | maintenance | |
ALTALINK | 03-Jul-25 03:00 | 03-Jul-25 07:00 | 4 Hours
Daily |
62s T2 (62s Brazeau Plant) | maintenance | |
BCH | 03-Jul-25 09:00 | 03-Jul-25 17:00 | 8 Hours
Continuous |
2L293 (BCH Nelway - BCH Selkirk) | Purpose: F26 AOP- This is for Maintenance on SEL | AB-BC |
BCH | 03-Jul-25 09:00 | 14-Jul-25 17:00 | 11.33 Days
Continuous |
2L113 (BCH Cranbrook - BCH Natal) | Insulator Replacement BC maintenance does not affect the Alberta ATC | AB-BC |
EPCOR | 07-Jul-25 07:00 | 13-Jul-25 17:00 | 6.42 Days
Continuous |
52s E2402 (52s East Industrial) | East Industrial: TX2 Doble and Tap Changer Maintenance, E2402 Doble and Breaker Maintenance | |
ATCO | 07-Jul-25 09:00 | 09-Jul-25 12:00 | 2.13 Days
Continuous |
826s 903 (826s Marguerite Lake) | BREAKER MAINTENANCE | |
ATCO | 07-Jul-25 10:30 | 10-Jul-25 15:30 | 3.21 Days
Continuous |
7L89 (700s Bonnyville - 721s La Corey) | GOI required for climbing inspection on 7L89 and for deficiency repair. | |
ATCO | 07-Jul-25 11:00 | 11-Jul-25 16:00 | 4.21 Days
Continuous |
898s 902T (898s Heart Lake) | transformer maintenance | |
ALTALINK | 07-Jul-25 12:30 | 10-Jul-25 16:30 | 3.17 Days
Continuous |
632s PS1 (632s Russell), 632s 452 (632s Russell), 632s 552 (632s Russell) | 632s PS1 FAC501 TC major, 632s452, 632s552 | |
ALTALINK, EPCOR | 09-Jul-25 07:00 | 25-Jul-25 17:00 | 16.42 Days
Continuous |
1044L (EP 805s Jasper - 816s Petrolia), EP 805s J2404 (EP 805s Jasper), EP 805s J2403 (EP 805s Jasper), EP 805s J2408 (EP 805s Jasper), 805s C1 (805s Jasper) | Jasper 1044L/Cap Bank: Infrastructure Upgrade Project | |
ATCO | 09-Jul-25 12:01 | 12-Jul-25 16:00 | 3.17 Days
Continuous |
826s 904 (826s Marguerite Lake) | BREAKER MAINTENANCE | |
ATCO | 14-Jul-25 09:00 | 16-Jul-25 12:00 | 2.13 Days
Continuous |
826s 907 (826s Marguerite Lake) | BREAKER MAINTENANCE | |
BCH | 14-Jul-25 09:00 | 18-Jul-25 17:00 | 4.33 Days
Continuous |
5L96 (BCH Selkirk - BCH Vaseux Lake) | replace markerballs and insulators BC maintenance does not affect the Alberta ATC | AB-BC |
ATCO | 14-Jul-25 09:30 | 15-Jul-25 17:30 | 1.33 Days
Continuous |
801s 906 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING- BREAKER 906 @ 801S | |
ALTALINK, EPCOR | 14-Jul-25 09:30 | 25-Jul-25 17:00 | 11.31 Days
Continuous |
1058L (657s Summerside - EP 803s Lambton), EP 803s L2403 (EP 803s Lambton), EP 803s L2404 (EP 803s Lambton), 657s SU2402 (657s Summerside), 657s SU2403 (657s Summerside) | Summerside/Lambton: 1058L Pole Refurbishment and 1058L Summerside Zone Doble and Disconnect Maintenance, L2403 SF6 Leak Repair | |
ATCO | 14-Jul-25 10:30 | 17-Jul-25 15:30 | 3.21 Days
Continuous |
7L89 (721s La Corey - 826s Marguerite Lake) | GOI required for climbing inspection on 7L89 and for deficiency repair. | |
ALTALINK | 15-Jul-25 08:00 | 15-Jul-25 13:00 | 5 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Cut in breakers for future Open Point 'B' at Str122. | AB-BC |
ALTALINK | 15-Jul-25 08:30 | 15-Jul-25 16:30 | 8 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Open "Open Point 'A' 170L to 786L removing bypass around 799s. | AB-BC |
ALTALINK | 16-Jul-25 08:00 | 16-Jul-25 14:00 | 6 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Remove breakers for Open Point 'B' at Str122. | AB-BC |
ATCO | 16-Jul-25 09:30 | 17-Jul-25 17:30 | 1.33 Days
Continuous |
801s 909 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - 909 @ 801S | |
ALTALINK, TRANSALTA | 16-Jul-25 10:00 | 16-Jul-25 14:00 | 4 Hours
Daily |
250p T1 (250p Bighorn Plant) | maintenance | |
ATCO | 16-Jul-25 12:01 | 18-Jul-25 16:00 | 2.17 Days
Continuous |
826s 908 (826s Marguerite Lake) | BREAKER MAINTENANCE | |
ALTALINK | 16-Jul-25 13:00 | 16-Jul-25 15:00 | 2 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Close Open Point 'A' 170L to 786L creating bypass around 799s. | AB-BC |
ALTALINK, TRANSALTA | 17-Jul-25 10:00 | 17-Jul-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
EPCOR | 21-Jul-25 07:00 | 27-Jul-25 17:00 | 6.42 Days
Continuous |
RW2403 (EP Riverview), RW2402 (EP Riverview), T2 (EP Riverview) | Riverview: TX2 Zone Doble and Disconnect Maintenance and Relay Maintenance | |
ATCO | 21-Jul-25 09:00 | 23-Jul-25 12:00 | 2.13 Days
Continuous |
2029s ACF11 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ATCO | 21-Jul-25 09:00 | 01-Aug-25 17:30 | 11.35 Days
Continuous |
2075s ACF11 (2075s Newell), 2075s ACF12 (2075s Newell), 2075s ACF13 (2075s Newell), 2075s ACF14 (2075s Newell), 2075s 901T (2075s Newell) | Leak Repairs 901T/SVC MAINTENANCE/FILTER BANK AC MAINTENANCE/ACF13 Resistor Lid Replacements |
|
ATCO | 21-Jul-25 12:00 | 24-Jul-25 16:00 | 3.17 Days
Continuous |
2011s 901T (2011s Dawes) | TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 2011S TRANSFORMER CLASS1 TAP CHANGER - 901T @ 2011S |
|
ALTALINK | 21-Jul-25 16:00 | 21-Jul-25 18:00 | 2 Hours
Daily |
245s 777X (245s Seebe), 777L (48s Pocaterra - 245s Seebe) | Protection upgrade project on 81/138B protection at 245s Seebe. | AB-BC |
ATCO | 22-Jul-25 07:00 | 23-Jul-25 18:00 | 1.46 Days
Continuous |
7L65 (709s Vegreville - 7LA65 tap), 7L65 (710s Vermilion - 7LA65 tap), 7LA65 tap | Repair/replace T-Tap switches Station outage to 708S |
|
BCH | 23-Jul-25 09:00 | 31-Jul-25 17:00 | 8.33 Days
Continuous |
2L294 (BCH A. A. Lambert - BCH Cranbrook), T3 (BCH Cranbrook) | Insulator Replacement. BC maintenance does not affect the Alberta ATC | AB-BC |
ALTALINK | 23-Jul-25 12:30 | 23-Jul-25 18:00 | 5.5 Hours
Continuous |
777L (48s Pocaterra - 245s Seebe), 245s 777X (245s Seebe) | protection upgrade project on 81/138B protection at 245s Seebe | AB-BC |
ATCO | 23-Jul-25 13:00 | 25-Jul-25 17:30 | 2.19 Days
Continuous |
2029s ACF21 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ATCO | 25-Jul-25 11:00 | 25-Jul-25 12:00 | 60 Mins
Continuous |
774s 701 (774s Monitor), 7L224 (650s Hansman Lake - 774s Monitor) | PRC-005 - TRIP COIL TESTING - BREAKER 701 @ 774S | |
ALTALINK, EPCOR | 28-Jul-25 07:00 | 31-Jul-25 17:00 | 3.42 Days
Continuous |
1045L (EP 805s Jasper - 1045AL tap), EP 805s J2406 (EP 805s Jasper), EP 805s J2407 (EP 805s Jasper) | Jasper 1045L Zone: Infrastructure Upgrade Project | |
ALTALINK, EPCOR | 28-Jul-25 07:00 | 31-Jul-25 17:00 | 3.42 Days
Continuous |
1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) | Jasper 1045L Zone: Infrastructure Upgrade Project | |
ATCO | 28-Jul-25 09:00 | 30-Jul-25 12:00 | 2.13 Days
Continuous |
2029s ACF12 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ATCO | 28-Jul-25 09:30 | 31-Jul-25 14:30 | 3.21 Days
Continuous |
809s 902T (809s Louise Creek) | BREAKER SF6 LTB145D1/B COMPLETE TESTING - 702 @ 809S 902TD and 910A @ 809S Louise Creek Require Readjusting |
|
ALTALINK, EPCOR | 28-Jul-25 09:30 | 01-Aug-25 17:00 | 4.31 Days
Continuous |
920L (71s Lamoureux - 557s Castle Downs), 557s CD2404 (557s Castle Downs), 557s CD2405 (557s Castle Downs) | Castledowns: 920LE Zone Doble and Disconnect Maintenance | |
ALTALINK, EPCOR | 28-Jul-25 09:30 | 01-Aug-25 17:00 | 4.31 Days
Continuous |
920L (71s Lamoureux - 557s Castle Downs) | EPCOR 920LE Zone Doble and Disconnect Maintenance | |
ALTALINK, EPCOR | 28-Jul-25 09:30 | 08-Aug-25 17:00 | 11.31 Days
Continuous |
1059L (EP 803s Lambton - 1059AL tap), 1059L (38s East Edmonton - 1059AL tap), EP 803s L2404 (EP 803s Lambton), EP 803s L2401 (EP 803s Lambton) | 1059L: Pole Refurbishment | |
ALTALINK, EPCOR | 28-Jul-25 09:30 | 08-Aug-25 17:00 | 11.31 Days
Continuous |
1059L (38s East Edmonton - 1059AL tap) | Pole Refurbishment | |
ATCO | 30-Jul-25 13:00 | 01-Aug-25 17:30 | 2.19 Days
Continuous |
2029s ACF22 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ATCO | 05-Aug-25 09:00 | 06-Aug-25 17:30 | 1.35 Days
Continuous |
2029s ACF13 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ATCO | 05-Aug-25 09:30 | 07-Aug-25 17:30 | 2.33 Days
Continuous |
801s 912 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - 912 @ 801S Breaker 912 N.W. Pole Low Oil at 801s Anderson |
|
ATCO | 06-Aug-25 09:00 | 06-Aug-25 16:00 | 7 Hours
Continuous |
7L85 (803s ATC Bullpound - 7LA85 tap) | L-G Clearance mitigation at span 382 between Badlands and 803S Bull pound. | |
ATCO | 07-Aug-25 09:00 | 08-Aug-25 17:30 | 1.35 Days
Continuous |
2029s ACF23 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ALTALINK | 10-Aug-25 10:00 | 13-Aug-25 16:30 | 3.27 Days
Continuous |
702L (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
ALTALINK, EPCOR | 11-Aug-25 07:00 | 17-Aug-25 17:00 | 6.42 Days
Continuous |
657s SU2403 (657s Summerside), 657s SU2402 (657s Summerside), 657s T2 (657s Summerside) | Summerside: TX2 Zone Doble and Disconnect Maintenance | |
ATCO | 11-Aug-25 09:00 | 13-Aug-25 12:00 | 2.13 Days
Continuous |
825s 901 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
ATCO | 11-Aug-25 10:00 | 15-Aug-25 17:00 | 4.29 Days
Continuous |
9L16 (755s Cordel - 972s Tinchebray) | Install foundations for new 9L16 structures 73 and 74 in preparation of the future line bay re-termination into 972S Tinchebray expansion. | |
ATCO | 11-Aug-25 10:00 | 15-Aug-25 17:30 | 4.31 Days
Continuous |
959s SVC (959s Lanfine) | SVC CONVERTER INSPECTION Fire System Inspection @ LANFINE 959S |
|
ATCO | 11-Aug-25 11:00 | 13-Aug-25 17:00 | 2.25 Days
Continuous |
876s 902T (876s Brintnell) | TRANSFORMER CLASS1 MAJOR TESTING - 902T @ 876S | |
ALTALINK, TRANSALTA | 12-Aug-25 07:00 | 14-Aug-25 13:00 | 2.25 Days
Continuous |
33s 138kV Bus (33s Spray), 33s T1 (33s Spray), 33s T2 (33s Spray) | Replace 33s1 CT13 "C" Phase. Remove old TAU communication cable. | |
ATCO | 13-Aug-25 12:01 | 15-Aug-25 16:00 | 2.17 Days
Continuous |
825s 902 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
EPCOR | 18-Aug-25 07:00 | 24-Aug-25 17:00 | 6.42 Days
Continuous |
987s CC721 (987s Clover Bar), 987s T2 (987s Clover Bar) | Cloverbar: TX2 Zone Doble and Leak Repair | |
EPCOR, ALTALINK | 18-Aug-25 07:00 | 24-Aug-25 17:00 | 6.42 Days
Continuous |
657s SU2405 (657s Summerside), 657s SU2404 (657s Summerside), 657s T1 (657s Summerside) | Summerside: TX1 Zone Doble and Disconnect Maintenance | |
ATCO | 18-Aug-25 09:00 | 20-Aug-25 12:00 | 2.13 Days
Continuous |
825s 903 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
ATCO | 18-Aug-25 09:30 | 21-Aug-25 17:30 | 3.33 Days
Continuous |
801s 911 (801s Anderson) | BREAKER MIN OIL HLR COMPLETE TESTING - 911 @ 801S | |
ALTALINK | 18-Aug-25 10:00 | 21-Aug-25 16:30 | 3.27 Days
Continuous |
702L (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
ATCO | 20-Aug-25 12:01 | 22-Aug-25 16:00 | 2.17 Days
Continuous |
825s 904 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
ALTALINK | 20-Aug-25 23:00 | 21-Aug-25 03:00 | 4 Hours
Continuous |
62s T1 (62s Brazeau Plant) | maintenance | |
ALTALINK | 21-Aug-25 03:00 | 21-Aug-25 07:00 | 4 Hours
Daily |
62s T2 (62s Brazeau Plant) | maintenance | |
ENMAX, ALTALINK | 22-Aug-25 07:00 | 26-Aug-25 18:00 | 4.46 Days
Continuous |
50L (44s Bearspaw Plant - SS-21) | Replacing structures 116 & 117. | |
EPCOR | 23-Aug-25 07:00 | 29-Aug-25 17:00 | 6.42 Days
Continuous |
665s T1 (665s Dome), 665s D2401 (665s Dome), 665s D2402 (665s Dome) | Dome: TX1 Zone Doble and DDS2/DDS3/DAB1 Disconnect Maintenance and Relay Maintenance | |
ATCO | 25-Aug-25 09:00 | 27-Aug-25 16:00 | 2.29 Days
Continuous |
825s 905 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
ALTALINK, EPCOR | 25-Aug-25 09:30 | 29-Aug-25 17:00 | 4.31 Days
Continuous |
915L (38s East Edmonton - 987s Clover Bar), 987s C2403 (987s Clover Bar), 987s C2405 (987s Clover Bar) | Cloverbar: 915L Zone Doble and CDS35/CDS36/CDS37 Disconnect Maintenance | |
ALTALINK, EPCOR | 25-Aug-25 09:30 | 29-Aug-25 17:00 | 4.31 Days
Continuous |
915L (38s East Edmonton - 987s Clover Bar) | Cloverbar: 915L Zone Doble and CDS35/CDS36/CDS37 Disconnect Maintenance | |
EPCOR | 02-Sep-25 07:00 | 14-Sep-25 17:00 | 12.42 Days
Continuous |
EP 803s T2 (EP 803s Lambton), EP 803s L2402 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton) | Lambton: LAB2 LCR and TX2 Zone Doble and LDS4/LDS9 Disconnect and Tap Changer Maintenance | |
EPCOR | 02-Sep-25 07:00 | 26-Sep-25 17:00 | 24.42 Days
Continuous |
805s T1 (805s Jasper) | Jasper: TX1 Bushing Replacement (PCB) | |
ALTALINK | 03-Sep-25 08:00 | 10-Sep-25 17:00 | 7.38 Days
Continuous |
1011L (163s Amoco Empress - 562s Cypress) | Line outage required for 163s1352 Breaker Replacement, Breaker will be new SF6 Type | |
ATCO | 03-Sep-25 09:30 | 04-Sep-25 17:30 | 1.33 Days
Continuous |
755s 901 (755s Cordel) | BREAKER SF6 GL315 COMPLETE TESTING - BREAKER 901 @ 755S TCM Program. RTXP Test Switch Mitigation and Replacement: 50BF/901 @ 755S |
|
ATCO | 03-Sep-25 09:30 | 04-Sep-25 17:30 | 1.33 Days
Continuous |
802s 704 (802s Michichi Creek), 7L128 (802s Michichi Creek - 7LA128 tap) | BREAKER MIN OIL HLR PARTIAL TESTING - BREAKER 704 @ 802S | |
EPCOR | 08-Sep-25 07:00 | 14-Sep-25 17:00 | 6.42 Days
Continuous |
816s P2404 (816s Petrolia), 816s P2405 (816s Petrolia), 816s T2 (816s Petrolia) | Petrolia: TX2 Zone Doble and Disconnect Maintenance | |
ATCO | 08-Sep-25 09:30 | 09-Sep-25 17:30 | 1.33 Days
Continuous |
755s 902 (755s Cordel) | BREAKER SF6 GL315 COMPLETE TESTING - BREAKER 902 @ 755S TCM Program. RTXP Test Switch Mitigation and Replacement: 50BF/902 @ 755S |
|
ALTALINK, EPCOR | 08-Sep-25 09:30 | 12-Sep-25 17:00 | 4.31 Days
Continuous |
921L (71s Lamoureux - 987s Clover Bar), 987s C2404 (987s Clover Bar), 987s C2406 (987s Clover Bar) | Cloverbar: 921L Zone Doble and CDS30/CDS32/CDS40 Disconnect Maintenance | |
ALTALINK, EPCOR | 08-Sep-25 09:30 | 12-Sep-25 17:00 | 4.31 Days
Continuous |
921L (71s Lamoureux - 987s Clover Bar) | Cloverbar: 921L Zone Doble and CDS30/CDS32/CDS40 Disconnect Maintenance | |
ATCO, ALTALINK | 09-Sep-25 09:00 | 10-Sep-25 18:00 | 1.38 Days
Continuous |
7L760D4 (7LA760 tap), 7L760D5 (7LA760 tap), 7L760 (7LA760 tap - 7LC760 tap), 760L (760AL tap - 7LA760 tap) | Building Temp Bypass to replace switches 7L760D4, 7L760D5 and 7LA760D1. Will Need COG from AltaLink at 163s1 |
|
ALTALINK, TRANSALTA | 09-Sep-25 23:00 | 11-Sep-25 07:00 | 1.33 Days
Continuous |
250p T2 (250p Bighorn Plant) | maintenance | |
ALTALINK, TRANSALTA | 10-Sep-25 07:00 | 11-Sep-25 07:00 | 24 Hours
Continuous |
250p T1 (250p Bighorn Plant) | maintenance | |
ATCO | 10-Sep-25 09:30 | 11-Sep-25 17:30 | 1.33 Days
Continuous |
755s 903 (755s Cordel) | BREAKER SF6 GL315 COMPLETE TESTING - BREAKER 903 @ 755S TCM Program. RTXP Test Switch Mitigation and Replacement: 50BF/903 @ 755S |
|
ENMAX, ALTALINK | 12-Sep-25 18:00 | 14-Sep-25 08:00 | 1.58 Days
Continuous |
936L (5s East Calgary - 102s Langdon) | Reconductor between str 15 to 18 on both Circuits for line Clearance Mitigation | |
ENMAX, ALTALINK | 12-Sep-25 18:00 | 14-Sep-25 08:00 | 1.58 Days
Continuous |
937L (5s East Calgary - 102s Langdon) | Crew working in vicinity of 936L | |
EPCOR | 15-Sep-25 07:00 | 21-Sep-25 17:00 | 6.42 Days
Continuous |
EP 803s L2401 (EP 803s Lambton), EP 803s L2402 (EP 803s Lambton), EP 803s T1 (EP 803s Lambton) | Lambton: TX1 Zone Doble and LAB1/LDS2/LDS3 Disconnect Maintenance | |
ALTALINK, EPCOR | 15-Sep-25 09:30 | 21-Sep-25 17:00 | 6.31 Days
Continuous |
909L (310p Sundance - 665s Dome), 665s D2402 (665s Dome), 665s D2403 (665s Dome), 665s T2 (665s Dome) | Dome: 909LE/TX2 Doble and DDS4/DDS5/DAB2 Disconnect Maintenance and Relay Maintenance | |
ALTALINK, EPCOR | 15-Sep-25 09:30 | 21-Sep-25 17:00 | 6.31 Days
Continuous |
909L (310p Sundance - 665s Dome) | Dome: 909LE/TX2 Doble and DDS4/DDS5/DAB2 Disconnect Maintenance and Relay Maintenance | |
ATCO | 15-Sep-25 10:00 | 03-Oct-25 17:30 | 18.31 Days
Continuous |
840s McNeill Station | CONVERTER INSPECTION @ MCNEILL 840S BREAKER SF6 HPL COMPLETE TESTING - 702 @ 840S BREAKER SF6 HPL COMPLETE TESTING - 703 @ 840S TRANSFORMER CLASS1 MAJOR TESTING - 901T @ 840S TRANSFORMER CLASS1 TAP CHANGER - 901T @ 840S 901T Oil Leak Absorption Repairs At 840s McNeill BREAKER VACUUM VA8012 COMPLETE |
AB-SK |
ALTALINK | 15-Sep-25 12:30 | 18-Sep-25 17:30 | 3.21 Days
Continuous |
359s T2 (359s Esso West Pembina), 359s 202AX (359s Esso West Pembina) | Bushing replacement, Doble, maintenance, leaks, LTC maintenance | |
ALTALINK, TRANSALTA | 16-Sep-25 07:00 | 17-Sep-25 18:00 | 1.46 Days
Daily |
514L (396s Pincher Creek - 514BL tap), 514L (513s Lundbreck - 514BL tap), 322s T1 (322s Cowley Ridge) | South will be performing maintenance on STR 16, 76 & 170 | |
SUNCOR | 17-Sep-25 00:00 | 23-Sep-25 00:00 | 6 Days
Continuous |
29PL7-4 (29EDD-65 - 29EDD-71), 29EDD-65 29PS-0284 (29EDD-65 Edd65Sub), 29EDD-71 29PS-243 (29EDD-71 Edd71Sub), 29EDD-65 29PT-0257 (29EDD-65) | FB-Maintenance, Repairs and Testing - PRC-5 Testing, 29PT-260, 29PL7-4, 29PT-241, 29PT-257, 29PS-243 (300415541, 31807283, 31773784, 300109525) | |
ENMAX, ALTALINK | 19-Sep-25 18:00 | 21-Sep-25 08:00 | 1.58 Days
Continuous |
937L (5s East Calgary - 102s Langdon) | Reconductor between str 15 to 18 on both Circuits for line Clearance Mitigation | |
ENMAX, ALTALINK | 19-Sep-25 18:00 | 21-Sep-25 08:00 | 1.58 Days
Continuous |
936L (5s East Calgary - 102s Langdon) | Crew working in vicinity of 937L | |
EPCOR | 22-Sep-25 07:00 | 04-Oct-25 17:00 | 12.42 Days
Continuous |
EP 803s T3 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton), 72LH8 (EP 803s Lambton - EP Hardisty), 72LS24 (EP 803s Lambton - Strathcona) | Lambton/LH8/LS24: LDS11/LDS12 LCR and L721 Breaker Maintenance (Min Oil) and PT Doble | |
ALTALINK | 22-Sep-25 10:00 | 22-Sep-25 17:00 | 7 Hours
Daily |
725L (674s Bowron - 725BL tap) | Test/Trip 674ss T1 Protections | |
ALTALINK | 23-Sep-25 08:00 | 23-Sep-25 17:00 | 9 Hours
Daily |
725L (674s Bowron - 725AL tap) | Test/Trip 674ss T1 Protections | |
ATCO | 29-Sep-25 13:00 | 02-Oct-25 16:00 | 3.13 Days
Continuous |
7L28 (717s Ethel Lake - 846s Grand Centre) | 7L28 Line to ground clearance mitigation | |
ALTALINK | 01-Oct-25 08:00 | 11-Nov-25 17:00 | 41.42 Days
Continuous |
102s SVC (102s Langdon), 102s T4 (102s Langdon) | the controls change | AB-BC |
ATCO | 06-Oct-25 09:30 | 07-Oct-25 17:30 | 1.33 Days
Continuous |
845s 703 (845s Big Mountain), 845s 710 (845s Big Mountain), 7L228 (845s Big Mountain - 7L20 tap) | Replace Crank Mechanisms on 144 kV Switches at 845s Big Mountain - 703B Replace Crank Mechanisms on 144 kV Switches at 845s Big Mountain - 704B |
|
ATCO | 08-Oct-25 09:30 | 09-Oct-25 17:30 | 1.33 Days
Continuous |
7L85 (801s Anderson - ATC 803s Bullpound), 801s 705 (801s Anderson) | BREAKER SF6 LTB145D1/B COMPLETE TESTING - 705 @ 801S | |
ALTALINK | 08-Oct-25 23:00 | 09-Oct-25 03:00 | 4 Hours
Continuous |
62s T1 (62s Brazeau Plant) | maintenance | |
ALTALINK | 09-Oct-25 03:00 | 09-Oct-25 07:00 | 4 Hours
Daily |
62s T2 (62s Brazeau Plant) | maintenance | |
ALTALINK, TRANSALTA | 29-Oct-25 10:00 | 29-Oct-25 14:00 | 4 Hours
Daily |
250p T1 (250p Bighorn Plant) | maintenance | |
ALTALINK, TRANSALTA | 30-Oct-25 10:00 | 30-Oct-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
ATCO | 03-Nov-25 12:00 | 09-Dec-25 17:00 | 36.21 Days
Continuous |
9L99 (801s Anderson - 807s Sheerness) | Replace Breaker 901 @ 807S Sheerness, complete line 21A, 21B/9L99 protection upgrade and Commissioning | |
ATCO | 17-Nov-25 10:00 | 24-Nov-25 16:00 | 7.25 Days
Continuous |
7L106 (834s Wesley Creek - 905s Meikle) | Soil around the tower footings has eroded ( Tower Replacement ) | |
ATCO | 17-Nov-25 10:00 | 24-Nov-25 16:00 | 7.25 Days
Continuous |
7L131 (834s Wesley Creek - 905s Meikle) | Soil around the tower footings has eroded ( Tower Replacement ) | |
ALTALINK | 26-Nov-25 23:00 | 27-Nov-25 03:00 | 4 Hours
Continuous |
62s T1 (62s Brazeau Plant) | maintenance | |
ALTALINK | 27-Nov-25 03:00 | 27-Nov-25 07:00 | 4 Hours
Daily |
62s T2 (62s Brazeau Plant) | maintenance | |
ALTALINK, TRANSALTA | 17-Dec-25 10:00 | 17-Dec-25 14:00 | 4 Hours
Daily |
250p T1 (250p Bighorn Plant) | maintenance | |
ALTALINK, TRANSALTA | 18-Dec-25 10:00 | 18-Dec-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
ATCO | 17-Feb-26 09:00 | 03-Mar-26 17:00 | 14.33 Days
Continuous |
972s 240kV Bus 900BS1 (972s Tinchebray) | Install Breaker 904 and 904CT On release leave Bkr 904, 904A/904B closed as feed through (disable bkr trips), Bkr 901 still protecting 9L93 |
|
SUNCOR | 02-Mar-26 08:00 | 08-Mar-26 20:00 | 6.46 Days
Continuous |
29PL9-16 (29EDD-1 Millennium - 29EDD-94 Voyageur) | 29EDD1;29PT418/29PL9-16 SYSTEM;PM 5y,10y |
|
SUNCOR | 09-Mar-26 08:00 | 15-Mar-26 20:00 | 6.5 Days
Continuous |
29PL9-17 (29EDD-1 Millennium - 29EDD-94 Voyageur) | 29EDD1;29PT419/29PL9-17 SYSTEM;PM 5y,10y |
|
ATCO | 10-Mar-26 09:00 | 14-Apr-26 17:00 | 35.33 Days
Continuous |
972s 240kV Bus 900BS2 (972s Tinchebray) | Install Breakers 905/906, 905CT/906CT, switches 905A/906B On release leave Bkrs 905/906, 905A/905B, and 906A/906B closed as feed through (disable bkr trips), Bkr 903 still protecting 9L93, leave new 9L62D1 open for future line connection |
|
ATCO, SUNCOR | 16-Mar-26 08:00 | 22-Mar-26 20:00 | 6.5 Days
Continuous |
29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake) | 29EDD1;29CVT-3 SYSTEM;PM 5y,10y |
|
ATCO, SUNCOR | 23-Mar-26 08:00 | 29-Mar-26 20:00 | 6.5 Days
Continuous |
29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake) | BP (Corey) - 29EDD1;29CVT-1 SYSTEM;PM 5y,10y | |
ATCO, SUNCOR | 30-Mar-26 08:00 | 05-Apr-26 20:00 | 6.5 Days
Continuous |
6L32 (29EDD-1 Millennium - 737s ATC Horseshoe) | 29EDD1;29CVT-6 SYSTEM;5y,10y |
|
SUNCOR | 06-Apr-26 08:00 | 12-Apr-26 20:00 | 6.5 Days
Continuous |
29PL9-3 (29EDD-1 Millennium - 29EDD-3), 29EDD-3 29PT-6 (29EDD-3) | 29EDD1;29CVT-4 SYSTEM;PM 5y,10y; |
|
SUNCOR | 13-Apr-26 08:00 | 19-Apr-26 20:00 | 6.5 Days
Continuous |
29EDD-1 T1 (29EDD-1 Millennium), 29EDD-1 260kV South Bus 1 (29EDD-1 Millennium), 29EDD-1 72kV South Bus (29EDD-1 Millennium) | 29EDD1;XFMR T1; X260B1; X72B1 SYSTEM;PM 5y | |
ATCO | 13-Apr-26 10:00 | 18-Apr-26 17:00 | 5.29 Days
Continuous |
7L22 (790s Poplar Hill - 7L88 tap) | Cut open 7L22, connect new line section to new 2061S Dobbs 7L22/21B relay upgrades at 790S Poplar Hill and 811S Clairmont Lake On completion energize new 2061S Dobbs substation |
|
SUNCOR | 20-Apr-26 08:00 | 26-Apr-26 20:00 | 6.5 Days
Continuous |
29EDD-1 T2 (29EDD-1 Millennium), 29EDD-1 260kV North Bus 2 (29EDD-1 Millennium), 29EDD-1 72kV North Bus (29EDD-1 Millennium) | 29EDD1;XFMR T2; N260B2; N72B1 SYSTEM;PM 5y | |
ATCO | 21-Apr-26 09:00 | 26-Apr-26 17:00 | 5.33 Days
Continuous |
9LA93 (973s Lanes Lake - 9L93 tap) | Cutover and commission 9L93 protection ccts from Bkrs 901/903 to Bkrs 904/905 **AESO NEEDS TO ADD 9L93, 973S 9LA93D1** |
|
ATCO | 03-May-26 10:00 | 04-May-26 17:00 | 31 Hours
Continuous |
7L22 (811s Clairmont Lake - 7L88 tap) | 7L22/21B relay upgrade at 811S Clairmont Lake Upon completion new 2061S Dobbs substation ready to energize |
|
SUNCOR | 04-May-26 08:00 | 10-May-26 20:00 | 6.5 Days
Continuous |
29PL6-6 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-2 29PT-2 (29EDD-2 Tar Island) | BP (Corey) - 29EDD2;29PP-1 SYSTEM;PM 5y | |
ATCO | 04-May-26 09:00 | 18-May-26 17:30 | 14.35 Days
Continuous |
13L50 (2029s Heathfield - 2075s Newell) | Kinbrook Addition to 2075s | |
ATCO | 04-May-26 09:00 | 18-May-26 17:30 | 14.35 Days
Continuous |
2029s T11 (2029s Heathfield) | Kinbrook Addition to 2075s Newell. | |
ATCO | 04-May-26 09:00 | 18-May-26 17:30 | 14.35 Days
Continuous |
2075s T11 (2075s Newell) | Kinbrook Addition to 2075s Newell. | |
ATCO | 05-May-26 09:00 | 06-May-26 17:00 | 1.33 Days
Continuous |
972s 240kV Bus 900BS1 (972s Tinchebray) | Connect new 907B to 900BS1 Run station service on back-up generator |
|
ATCO | 07-May-26 09:00 | 08-May-26 17:00 | 1.33 Days
Continuous |
972s 240kV Bus 900BS2 (972s Tinchebray) | Connect new 909A to 900BS2 | |
SUNCOR | 18-May-26 08:00 | 24-May-26 20:00 | 6.5 Days
Continuous |
29PL9-12 (29EDD-34 - 29EDD-65) | BP (Corey) - 29EDD34;29PL9-12 SYSTEM;PM 5y,10y |
|
ATCO | 19-May-26 09:00 | 19-May-26 17:00 | 8 Hours
Continuous |
9L16 (755s Cordel - 972s Tinchebray), 755s 904 (755s Cordel), 755s 905 (755s Cordel), 972s 903 (972s Tinchebray) | Disconnect 9L16 from existing A-frame deadend and 9L16D2 (to be renamed 9L86D1) Restore bus leave renamed 9L86D1 open for future line connection. |
|
ATCO | 19-May-26 09:00 | 29-May-26 17:00 | 10.33 Days
Continuous |
9L16 (755s Cordel - 972s Tinchebray) | Disconnect 9L16 from existing A-frame deadend and 9L16D2 (to be renamed 9L86D1) Restore bus leave renamed 9L86D1 open for future line connection. |
|
ATCO | 02-Jun-26 09:00 | 13-Jun-26 17:00 | 11.33 Days
Continuous |
ATCO RTU/SCADA | Connect new 9L62 to 972S and prepare to energize. String Conductors/OPGW 9L62 from Str #3 to substation A-frame deadends and connect to 9L62D1, coordinate with AML conductor jumpers and OPGW termination at the TFO boundary 9L86 Str 409 |
|
ATCO | 14-Jun-26 09:00 | 25-Jun-26 17:00 | 11.33 Days
Continuous |
ATCO RTU/SCADA | Work on parallel line 9L86 | |
ATCO | 16-Jun-26 09:00 | 25-Jun-26 17:00 | 9.33 Days
Continuous |
972s 240kV Bus 900BS2 (972s Tinchebray) | Connect new 9L86 to 972S and prepare to energize. String Conductors/OPGW 9L86 from Str #3 to substation A-frame deadends and connect to 9L86D1, coordinate with AML conductor jumpers and OPGW termination at the TFO boundary 9L86 Str 409 Complete protection commissioning |
|
ATCO | 10-Aug-26 10:00 | 13-Aug-26 16:30 | 3.27 Days
Continuous |
7L702 (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
ATCO | 17-Aug-26 10:00 | 20-Aug-26 16:30 | 3.27 Days
Continuous |
7L702 (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
ATCO | 24-Feb-27 09:00 | 25-Feb-27 17:00 | 1.33 Days
Continuous |
959s 240kV Bus 900BS1 (959s Lanfine) | Connect new bus from new 902B to existing switch 901A to add new line 9L141 to UK Solar farm Cutover and commission 900PT1 ccts to new 9L141 relays |
|
ATCO | 26-Feb-27 09:00 | 27-Feb-27 17:00 | 1.33 Days
Continuous |
959s 240kV Bus 900BS2 (959s Lanfine) | Connect new bus from new Bkr 903 to existing switch 903B to add new line 9L141 to UK Solar farm Cutover and commission 900PT2 ccts to new 9L141 relays |
|
ATCO | 08-Mar-27 10:00 | 17-Mar-27 17:00 | 9.25 Days
Continuous |
9L24 (946s Oakland - 959s Lanfine), 959s 906 (959s Lanfine), 959s 905 (959s Lanfine), 946s 902 (946s Oakland), 946s 903 (946s Oakland) | Replace A/B protection relays at 959S Lanfine and 946S Oakland Cut in and reroute 9L24 Connect new 9LA24 T-tap Commission Telecom and Protection to new 1072S Rose Lynn substation |
|
ATCO | 20-Jul-27 08:00 | 21-Jul-27 17:00 | 1.38 Days
Continuous |
7L53 (706s Irish Creek - 7LA53 tap), 7LA53 (969s Lindbergh - 7L53 tap), 7L53 (700s Bonnyville - 7LA53 tap) | Cold Lake Area Project to connect 1064s | |
ATCO | 22-Jul-27 08:00 | 25-Jul-27 17:00 | 3.38 Days
Continuous |
7L91 (715s Leming Lake - 826s Marguerite Lake) | Cold Lake Area Energy Centre Project |
AB-BC, AB-SK & AB-MATL: refer to AESO web posting: | http://itc.aeso.ca/itc/public/atc |
Also, | |
AB-BC, AB-SK & AB-MATL: refer to ISO Rule 203.6: | http://www.aeso.ca/rulesprocedures/18592.html |
Prepared On: | 2025-03-26 14:23:42 |
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 |