Alberta Electric System Operator | |
Long Range Significant Transmission Outages for the period of 24 months starting 2025-07-05 | |
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: |
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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. | |
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Owner | From | To | Duration | Element | Scheduled Activity | Affected Intertie |
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ALTALINK | 24-Jan-25 00:00 | 31-Dec-25 16:00 | Continuous |
341.67 Days
74s C3 (74s Janet) | forced outage | |
EPCOR | 31-Mar-25 07:00 | 03-Oct-25 17:00 | 186.42 Days
Continuous |
987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) | Cloverbar - TX1 LCR | |
EPCOR | 25-May-25 07:00 | 01-Aug-25 17:00 | 68.42 Days
Continuous |
987s GT2 (987s Clover Bar) | maintenance | |
Syncrude, ATCO | 21-Jun-25 08:00 | 08-Jul-25 16:00 | 17.33 Days
Continuous |
RL1 (848s Ruth Lake - D05), T2 (D05 Syncrude), D05 517 (D05), D05 516 (D05), D05 513 (D05), D05 78 (D05), D05 517B (D05), D05 516A (D05), D05 516B (D05), D05 513A (D05), D05 513B (D05), D05 509 (D05), D05 78A (D05), 848s RL-1D1 (848s Ruth Lake) | 6-year 260 kV and 72 kV preventive maintenance | |
SUNCOR | 30-Jun-25 08:00 | 17-Jul-25 18:00 | 17.42 Days
Continuous |
29PL7-2 (29EDD-18 Firebag - 29EDD-63), 29EDD-63 29PT-179 (29EDD-63 Firebag Co-Gen), 29EDD-63 30-252-11301 (29EDD-63) | maintenance | |
ALTALINK, EPCOR | 02-Jul-25 07:00 | 06-Jul-25 17:00 | 4.42 Days
Continuous |
909L (89s Ellerslie - 665s Dome), 72DS26 (665s Dome - Strathcona), 665s T3 (665s Dome), 665s D2401 (665s Dome), 665s D2404 (665s Dome), 665s D721 (665s Dome), S721 (Strathcona), 665s DDS13 (665s Dome), 665s DAB3 (665s Dome), 665s DDS17 (665s Dome), SDS3 (Strathcona) | doble, disconnect and breaker maintenance | |
ALTALINK, EPCOR | 02-Jul-25 07:00 | 06-Jul-25 17:30 | 4.44 Days
Continuous |
909L (89s Ellerslie - 665s Dome), 89s 1052 (89s Ellerslie), 89s 1152 (89s Ellerslie) | doble, disconnect and breaker maintenance | |
ATCO | 05-Jul-25 08:00 | 06-Jul-25 19:00 | 1.46 Days
Continuous |
845s 702 (845s Big Mountain) | Protection upgrade 21A & 21B relays 7L13. CT testing, breaker testing |
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ALTALINK | 07-Jul-25 07:00 | 10-Jul-25 14:00 | 3.29 Days
Daily |
681s T2 (681s Bannerman) | T2 Outage to service 17-NGR6102A (NGR2-2) & 17-NGR6102B (NGR2-1) for customer | |
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 | |
EPCOR | 07-Jul-25 07:00 | 16-Jul-25 17:00 | 9.42 Days
Continuous |
987s T1 (987s Clover Bar), 987s T3 (987s Clover Bar) | Cloverbar S/S TX1 bay and 240 kV bus outage | |
ATCO | 07-Jul-25 09:00 | 08-Jul-25 16:00 | 31 Hours
Continuous |
828s 701 (828s Sulphur Point), 7L93 (828s Sulphur Point - 930s Arcenciel) | BREAKER SF6 LTB145D1/B COMPLETE TESTING - 701 @ 828S | |
ATCO | 07-Jul-25 09:00 | 08-Jul-25 17:00 | 1.33 Days
Continuous |
7L20 (740s H.R. Milner - 810s Dome Cutbank) | Outage on 7L20 in conunction with 7L80 GOI 2-97174 for line maintenance to change out structures 51, 52 | |
ATCO | 07-Jul-25 09:00 | 08-Jul-25 17:00 | 1.33 Days
Daily |
7L80 (740s H.R. Milner - 857s Kakwa Ridge), 7L80 (733s Simonette - 857s Kakwa Ridge) | Outage on 7L80 in conjunction with 7L20 GOI, Crow 2-97173 to change out str 51 & 52. | |
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 11:00 | 18-Jul-25 16:00 | 11.21 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 | |
ATCO | 07-Jul-25 13:30 | 11-Jul-25 12:30 | 3.96 Days
Continuous |
939s 910 (939s Livock), 939s 911 (939s Livock), 939s 903T (939s Livock) | Trouble shoot switch issues on 910A switch and TRIP COIL TESTING. | |
ALTALINK | 08-Jul-25 06:30 | 09-Jul-25 18:30 | 1.5 Days
Continuous |
74s 2052 (74s Janet) | Urgent replacement of Koncar C phase of CT unit #20 due to leaking bellow (Like for Like) | |
ALTALINK | 08-Jul-25 07:00 | 09-Jul-25 15:30 | 1.35 Days
Continuous |
510s ACF21 (510s Sunnybrook), 510s ACF22 (510s Sunnybrook), 510s 1952 (510s Sunnybrook), 510s 2052 (510s Sunnybrook) | Remove overgrown vegetation in both ACF 21 and 22, and spray herbicide Schedued | |
ALTALINK | 08-Jul-25 08:00 | 09-Jul-25 17:00 | 1.38 Days
Continuous |
510s 2052 (510s Sunnybrook) | replace grading caps | |
ALTALINK | 08-Jul-25 08:00 | 09-Jul-25 17:00 | 1.38 Days
Continuous |
510s 1352 (510s Sunnybrook) | replace grading caps | |
BCH | 08-Jul-25 09:00 | 08-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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BCH | 08-Jul-25 16:30 | 08-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ATCO | 09-Jul-25 08:00 | 16-Jul-25 16:00 | 7.33 Days
Continuous |
7L32 (813s Little Smoky - 862s South Bezanson) | Pole changes | |
Syncrude | 09-Jul-25 08:00 | 21-Jul-25 16:00 | 12.33 Days
Continuous |
D05 510 (D05), T1 (D05 Syncrude), D05 71 (D05), D05 71A (D05), D05 71B (D05), D05 73 (D05), D05 73A (D05), D05 73B (D05), D05 75 (D05), D05 75A (D05), D05 75B (D05), D05 79 (D05), D05 79A (D05), D05 79B (D05), D05 80 (D05), D05 80A (D05), D05 80B (D05), LCF (D05), ML-4 (D05), 72kV A Bus (D05), UE-1 72-16 (UE-1 Syncrude Plant 30-2), UE-1 7206 (UE-1 Syncrude Plant 30-2), D05 511 (D05), D05 519 (D05), UE-1 72-06 (UE-1 Syncrude Plant 30-2) | SCL - Complete 6-Year 72kV A Bus PM in D05 Substation. This PM will encompass the 72kV "A" Bus, UE-1 Bay, ML-4 Bay and the Lower Camp Bay. T1 will be isolated while we complete the PM. |
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BCH | 09-Jul-25 09:00 | 09-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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ATCO | 09-Jul-25 12:01 | 12-Jul-25 16:00 | 3.17 Days
Continuous |
826s 904 (826s Marguerite Lake) | BREAKER MAINTENANCE | |
BCH | 09-Jul-25 16:30 | 09-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ALTALINK | 11-Jul-25 07:00 | 17-Jul-25 18:00 | 6.46 Days
Continuous |
199L (347s AML Fox Creek - 199AL tap) | Replace 199L structures 170, 171, 171A, 172, 173, 174, 175, 176, 177, and 178. | |
ALTALINK | 14-Jul-25 07:00 | 17-Jul-25 14:00 | 3.29 Days
Daily |
681s T1 (681s Bannerman) | T1 Outage to service 17-NGR6101A (NGR1-2) & 17-NGR6101B (NGR1-1) for customer | |
ALTALINK | 14-Jul-25 08:00 | 14-Jul-25 09:00 | 60 Mins
Daily |
170L (632s Russell - 799s Coleman), 799s 138kV Bus (799s Coleman) | Outage required for T3 test energization. | |
ALTALINK | 14-Jul-25 08:30 | 15-Jul-25 16:30 | 1.33 Days
Continuous |
725AL (618s Riverbend - 725L tap) | URGENT 618s725 Gauge replacement. Several trouble calls over the last few weeks. Major maintenance on the breaker. No first trip required. | |
ATCO | 14-Jul-25 09:00 | 15-Jul-25 16:00 | 31 Hours
Continuous |
828s 703 (828s Sulphur Point), 7L133 (786s High Level - 828s Sulphur Point) | BREAKER SF6 LTB145D1/B COMPLETE TESTING - 703 @ 828S | |
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 |
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 (700s Bonnyville - 721s La Corey) | GOI required for climbing inspection on 7L89 and for deficiency repair. | |
ALTALINK | 14-Jul-25 11:30 | 14-Jul-25 17:30 | 6 Hours
Daily |
338s 452 (338s Cherhill) | 138kV breaker maintenance, test CTs | |
ALTALINK | 14-Jul-25 12:30 | 16-Jul-25 17:00 | 2.19 Days
Continuous |
17s T3 (17s Benalto) | PRC005 Doble, maintenance, alarming issue | |
ALTALINK | 14-Jul-25 13:30 | 15-Jul-25 17:30 | 28 Hours
Continuous |
38s 7652 (38s East Edmonton) | PRC005 brk maint. + first trip + Rebuild dashpots | |
ALTALINK | 15-Jul-25 07:30 | 15-Jul-25 17:30 | 10 Hours
Daily |
37s T6 (37s North Calder) | Extend T6 CT wiring to DDR | |
ALTALINK | 15-Jul-25 08:00 | 16-Jul-25 17:00 | 1.38 Days
Continuous |
510s 2852 (510s Sunnybrook) | replace grading caps | |
ALTALINK | 15-Jul-25 08:30 | 15-Jul-25 17:30 | 9 Hours
Daily |
338s 152 (338s Cherhill) | 138kV breaker maintenance, test CTs | |
BCH | 15-Jul-25 09:00 | 15-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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BCH | 15-Jul-25 16:30 | 15-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ALTALINK | 16-Jul-25 08:00 | 16-Jul-25 13:00 | 5 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Cut in breakers for future Open Point at 786L Str122. | AB-BC |
BCH | 16-Jul-25 08:00 | 16-Jul-25 13:00 | 5 Hours
Continuous |
1L275 (799s Coleman - BCH Natal) | AltaLink project at COL bypass: Cut in breakers for future Open Point at 786L Str122.
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AB-BC |
ALTALINK | 16-Jul-25 08:30 | 17-Jul-25 17:30 | 1.38 Days
Continuous |
338s T2 (338s Cherhill) | Doble and maintenance | |
BCH | 16-Jul-25 09:00 | 16-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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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 'C' 170L to 786L creating bypass around 799s, and creating open point D. | AB-BC |
BCH | 16-Jul-25 13:00 | 16-Jul-25 15:00 | 2 Hours
Continuous |
1L275 (799s Coleman - BCH Natal) | AltaLink project at COL bypass: Close Open Point 'C' 170L to 786L creating bypass around 799s, and creating open point D.
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AB-BC |
BCH | 16-Jul-25 16:30 | 16-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ALTALINK, TRANSALTA | 17-Jul-25 10:00 | 17-Jul-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
ENMAX, ALTALINK | 19-Jul-25 08:00 | 19-Jul-25 16:00 | 8 Hours
Continuous |
1080L (SS-25 - SS-65) | Surge Arrestor Power Factor Test - 65MD240-1080 | |
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 | |
ALTALINK, EPCOR | 21-Jul-25 07:00 | 08-Aug-25 17:00 | 18.42 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 | |
ALTALINK | 21-Jul-25 07:30 | 25-Jul-25 17:30 | 4.42 Days
Continuous |
244s C1 (244s Bowmanton), 244s 752 (244s Bowmanton) | Install bird cover and change fuse holders to accommodate 30A fuses for DC circuits in breaker centralizing cabinets | |
ALTALINK | 21-Jul-25 07:30 | 25-Jul-25 17:30 | 4.42 Days
Continuous |
244s 1052 (244s Bowmanton), 244s C2 (244s Bowmanton) | Install bird cover and change fuse holders to accommodate 30A fuses for DC circuits in breaker centralizing cabinets | |
ALTALINK | 21-Jul-25 07:30 | 25-Jul-25 17:30 | 4.42 Days
Continuous |
244s 952 (244s Bowmanton), 244s C3 (244s Bowmanton) | Install bird cover and change fuse holders to accommodate 30A fuses for DC circuits in breaker centralizing cabinets | |
ALTALINK | 21-Jul-25 08:00 | 21-Jul-25 12:00 | 4 Hours
Daily |
658L (562s Cypress - 658AL tap), 658L (649s Chappice Lake - 658AL tap) | Open jumpers 658L286JX. Install bird diverters on STR 357-359. | |
ATCO, AIRLIQUIDE | 21-Jul-25 08:00 | 23-Jul-25 16:00 | 2.33 Days
Continuous |
ALC03L (402s Scotford Expansion One - 408s Air Liquide Scotford) | Air Liquide- Complete maintenance testing, function testing, cleaning, lubrication and inspection at 408s | |
ALTALINK | 21-Jul-25 08:00 | 25-Jul-25 17:00 | 4.38 Days
Continuous |
786L (799s Coleman - BCH Natal) | To move this fiber run to accommodate construction for a wildlife underpass. 786L will be required to be de- energized. | |
BCH | 21-Jul-25 08:00 | 25-Jul-25 17:00 | 4.38 Days
Continuous |
1L275 (799s Coleman - BCH Natal) | AltaLink outage:To move this fiber run to accommodate construction for a wildlife underpass. 786L will be required to be de- energized.
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AB-BC |
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 |
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ATCO | 21-Jul-25 09:30 | 22-Jul-25 17:30 | 1.33 Days
Continuous |
801s 906 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING- BREAKER 906 @ 801S | |
ALTALINK | 21-Jul-25 12:00 | 24-Jul-25 15:00 | 3.13 Days
Continuous |
658L (649s Chappice Lake - 658AL tap) | Install bird diverters on spans 1-244 | |
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 |
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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 16:00 | 1.38 Days
Continuous |
7L65 (709s Vegreville - 7LA65 tap), 7L65 (710s Vermilion - 7LA65 tap), 7LA65 tap | Repair/replace T-Tap switches | |
ALTALINK | 22-Jul-25 08:00 | 23-Jul-25 17:00 | 1.38 Days
Continuous |
510s 2852 (510s Sunnybrook) | replace grading caps | |
Syncrude | 22-Jul-25 08:00 | 31-Jul-25 16:00 | 9.33 Days
Continuous |
72kV B Bus (D05), D05 78 (D05), D05 78A (D05), D05 77B (D05), D05 77 (D05), D05 77A (D05), D05 78B (D05), D05 76B (D05), D05 76A (D05), D05 76 (D05), D05 75B (D05), D05 75A (D05), D05 75 (D05), T2 (D05 Syncrude), D05 509 (D05), ML-3 (D05), 915 (Syncrude Mildred Lake), 916 (Syncrude Mildred Lake), D05 513 (D05), D05 516 (D05) | SCL - 6-year PM is due at D05 substation. This is PM will include the 72kV B Bus and the ML-1 and ML-3 bays that are fed off of the B Bus. |
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BCH | 22-Jul-25 09:00 | 22-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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ALTALINK | 22-Jul-25 10:30 | 22-Jul-25 16:00 | 5.5 Hours
Daily |
356s 452 (356s Milo) | 356s452 HPL 240kv maint. First Trip | |
BCH | 22-Jul-25 16:30 | 22-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ENMAX, ALTALINK | 23-Jul-25 08:00 | 23-Jul-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 | 23-Jul-25 08:00 | 23-Jul-25 16:00 | 8 Hours
Continuous |
21.80L (42s Sarcee - SS-21) | HV Breaker Maintenance - 21B138-21.80. | |
BCH | 23-Jul-25 09:00 | 23-Jul-25 09:30 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to OPEN 5D4 for Switching Training
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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 09:30 | 23-Jul-25 12:30 | 3 Hours
Daily |
324s 1552 (324s Cassils) | 324s1552 First Trip, heater replacement, CT doble test. | |
ATCO | 23-Jul-25 09:30 | 24-Jul-25 17:30 | 1.33 Days
Continuous |
801s 909 (801s Anderson) | BREAKER MIN OIL HLR PARTIAL TESTING - 909 @ 801S | |
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 |
ALTALINK | 23-Jul-25 13:00 | 23-Jul-25 16:30 | 3.5 Hours
Daily |
324s 1852 (324s Cassils) | 324s1852 First Trip, heater replacement, CT doble test. | |
ATCO | 23-Jul-25 13:00 | 25-Jul-25 17:30 | 2.19 Days
Continuous |
2029s ACF21 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
BCH | 23-Jul-25 16:30 | 23-Jul-25 17:00 | 30 Mins
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 500kV Switching to Close 5D4 for Switching Training
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ATCO | 24-Jul-25 08:00 | 25-Jul-25 16:00 | 1.33 Days
Continuous |
ALC01L (408s Air Liquide Scotford - 409s Shell Scotford) | Air Liquide- Complete maintenance testing, function testing, cleaning, lubrication and inspection at 408s | |
ALTALINK | 24-Jul-25 09:30 | 24-Jul-25 12:30 | 3 Hours
Daily |
28s 52 (28s West Brooks) | 28s52 First Trip, heater replacement, CT doble test. | |
ALTALINK | 24-Jul-25 15:00 | 24-Jul-25 18:00 | 3 Hours
Daily |
658L (562s Cypress - 658AL tap), 658L (649s Chappice Lake - 658AL tap) | Close jumpers 658L286JX. | |
ENMAX, ALTALINK | 25-Jul-25 08:00 | 25-Jul-25 18:00 | 10 Hours
Continuous |
1080L (SS-25 - SS-65) | Surge Arrestor Power Factor Test - 25MD240-1080 | |
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 | |
ENMAX, ALTALINK | 26-Jul-25 08:00 | 26-Jul-25 18:00 | 10 Hours
Daily |
1003L (74s Janet - SS-25) | Surge Arrestor Power Factor Test - 25MD240-1003 | |
ENMAX, ALTALINK | 27-Jul-25 08:00 | 27-Jul-25 18:00 | 10 Hours
Continuous |
985L (74s Janet - SS-25) | Surge Arrestor Power Factor Test - 25MD240-985 | |
ENMAX, ALTALINK | 27-Jul-25 12:00 | 27-Jul-25 16:00 | 4 Hours
Continuous |
28.80L (42s Sarcee - SS-28), 28B138-28.80 (SS-28) | HV Breaker SF6 Gas Sample - 28B138-28.80 | |
ENMAX | 28-Jul-25 08:00 | 28-Jul-25 16:00 | 8 Hours
Continuous |
162B240-RB133 (SS-162) | HV Breaker Maintenance - 162B240-RB133. Breaker Dashpot Checks - 162B240-RB133 | |
ALTALINK | 28-Jul-25 08:30 | 29-Jul-25 16:30 | 1.33 Days
Continuous |
74s C3 (74s Janet), 74s C4 (74s Janet) | Install bird mitigation on neutral capacitors and VT’s for C3&C4 | |
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 09:00 | 31-Jul-25 16:00 | 3.29 Days
Continuous |
7L44 (749s Flyingshot Lake - 845s Big Mountain) | Emergency pole change from Fire damage | |
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 | 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 | |
ALTALINK | 28-Jul-25 10:00 | 28-Jul-25 14:30 | 4.5 Hours
Daily |
801L (62s Brazeau Plant - 294s Brazeau Plant Outlet Works) | High side mobile connect. Replacing insulator on structure 38 | |
ATCO | 28-Jul-25 10:00 | 31-Jul-25 17:30 | 3.31 Days
Continuous |
959s SVC (959s Lanfine) | SVC CONVERTER INSPECTION Fire System Inspection @ LANFINE 959S |
|
ATCO | 28-Jul-25 10:30 | 31-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 | 28-Jul-25 12:00 | 31-Jul-25 17:30 | 3.23 Days
Continuous |
71s T2 (71s Lamoureux) | doble, maintenance, leaks | |
ALTALINK | 29-Jul-25 08:00 | 29-Jul-25 16:00 | 8 Hours
Daily |
893L (312s Fidler - 893AL tap), 893L3J (893BL tap) | Testing of the Motor Operated Disconnect (MOD) and Surge arrestors. | |
ALTALINK | 29-Jul-25 08:00 | 29-Jul-25 17:30 | 9.5 Hours
Daily |
17s T3 (17s Benalto) | 17s2852 PRC005 brk maint + first trip | |
ALTALINK | 29-Jul-25 08:00 | 30-Jul-25 17:00 | 1.38 Days
Continuous |
510s 3552 (510s Sunnybrook) | replace grading caps | |
ALTALINK | 30-Jul-25 08:00 | 30-Jul-25 17:30 | 9.5 Hours
Daily |
17s 1652 (17s Benalto) | 17s1652 PRC005 brk maint + first trip | |
ALTALINK | 30-Jul-25 10:00 | 30-Jul-25 16:30 | 6.5 Hours
Daily |
103s 652 (103s Goose Lake) | First Trip, maint., CT test | |
ATCO | 30-Jul-25 13:00 | 01-Aug-25 17:30 | 2.19 Days
Continuous |
2029s ACF22 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
ALTALINK | 31-Jul-25 10:00 | 31-Jul-25 16:30 | 6.5 Hours
Daily |
138s 1752 (138s Windy Flats) | 138s1752 First Trip, maint., CT test | |
ENMAX, ALTALINK | 04-Aug-25 08:00 | 15-Aug-25 16:00 | 11.33 Days
Continuous |
20.82L (SS-20 - SS-21), 21.80L (42s Sarcee - SS-21), 21.1TR (SS-21), 21.4TR (SS-21) | 21.1TR Replacement. Decommission, remove existing 21.1TR and associated equipment. | |
ENMAX, ALTALINK | 04-Aug-25 08:00 | 15-Sep-25 16:00 | 42.33 Days
Continuous |
21.80L (42s Sarcee - SS-21) | 21.1TR Replacement. Decommission, remove existing 21.1TR and associated equipment. 21.80L & 20.82L will be open ended | |
EPCOR | 05-Aug-25 07:00 | 07-Aug-25 17:00 | 2.42 Days
Continuous |
72CK12 (987s Clover Bar - Kennedale), 987s CC13 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CGB2 (987s Clover Bar), 987s CK725 (987s Clover Bar), 987s GT2 (987s Clover Bar), 987s 72kV Bus 2 (987s Clover Bar) | Cloverbar/BUS 2: CDS9, CDS14, CDS17, CGDS2, GDS2 Disconnect Maintenance | |
ATCO | 05-Aug-25 08:00 | 06-Aug-25 16:00 | 1.33 Days
Continuous |
7L03 (731s Elmworth - 7L09 tap) | Replace rotten pole (big woodpecker hole) on 7L03/7L69 structure 397 | |
SUNCOR | 05-Aug-25 08:00 | 15-Aug-25 20:00 | 10.5 Days
Continuous |
29EDD-56 29PT-190 (29EDD-56) | 29EDD-56;29PT-190 SYSTEM;PM 5y; 29EDD56;29PP-41H SYSTEM;PM 5Y/10Y | |
ATCO | 05-Aug-25 09:00 | 06-Aug-25 17:30 | 1.35 Days
Continuous |
2029s ACF13 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
BCH | 05-Aug-25 09:00 | 08-Aug-25 17:00 | 3.33 Days
Continuous |
5L52 (BPA Custer - BCH Ingledow) | replacing end of life structures on 5L52 | AB-BC |
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 | 05-Aug-25 10:00 | 11-Aug-25 16:00 | 6.25 Days
Continuous |
7L133 (786s High Level - 828s Sulphur Point) | Replace burnt poles cause of the wildfire Structures # 538, 552, and 580 | |
ATCO | 05-Aug-25 13:00 | 06-Aug-25 17:00 | 28 Hours
Continuous |
7L85 (803s ATC Bullpound - 7LA85 tap) | L-G Clearance mitigation at span 382 between Badlands and 803S Bull pound. Install conductor weights on 25 structures between 399-462 | |
ALTALINK, EPCOR | 06-Aug-25 07:00 | 06-Aug-25 18:00 | 11 Hours
Continuous |
1139L (367s Harry Smith - EP Riverview) | Replace insulators on structure 58 | |
ALTALINK, EPCOR | 06-Aug-25 07:00 | 06-Aug-25 18:00 | 11 Hours
Continuous |
1139L (367s Harry Smith - EP Riverview) | ALTALINK - 1139L - GOI @ RIVERVIEW | |
ENMAX | 07-Aug-25 08:00 | 07-Aug-25 16:00 | 8 Hours
Continuous |
162B240-RB134 (SS-162) | HV Breaker Maintenance - 162B240-RB134. Breaker Dashpot Checks - 162B240-RB134 | |
ATCO | 07-Aug-25 09:00 | 08-Aug-25 17:30 | 1.35 Days
Continuous |
2029s ACF23 (2029s Heathfield) | FILTER BANK AC MAINTENANCE | |
BCH | 11-Aug-25 00:00 | 29-Aug-25 17:00 | 18.71 Days
Continuous |
5L98 (BCH Nicola - BCH Vaseux Lake) | Purpose: Replace spacers and marker balls | AB-BC |
ALTALINK, EPCOR | 11-Aug-25 07:00 | 15-Aug-25 17:00 | 4.42 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 | 11-Aug-25 07:00 | 15-Aug-25 17:00 | 4.42 Days
Continuous |
1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) | Jasper 1045L Zone: Infrastructure Upgrade Project | |
EPCOR | 11-Aug-25 07:00 | 24-Aug-25 17:00 | 13.42 Days
Continuous |
657s T1 (657s Summerside) | Summerside: TX1 DGA Apparatus Install (First week), TX1 Doble/Disconnect Maintenance and P&C/SCADA DGA Commissioning (Second week) | |
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 | 14-Aug-25 17:30 | 3.31 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 |
|
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. | |
ALTALINK | 11-Aug-25 10:30 | 14-Aug-25 17:30 | 3.29 Days
Continuous |
87s T2 (87s Gaetz) | PRC005 Doble, maintenance, leaks | |
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 | 11-Aug-25 12:30 | 15-Aug-25 18:00 | 4.23 Days
Continuous |
410s T2 (410s Josephburg) | Replace H2 bushing, doble, maint, oil leaks | |
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 all 3 Phases. Remove old TAU communication cable. | |
ATCO | 12-Aug-25 10:00 | 13-Aug-25 17:00 | 31 Hours
Continuous |
9L56 (720s Wabasca - 876s Brintnell), 876s 902 (876s Brintnell), 876s 904 (876s Brintnell) | Heater Repair 904 in breaker mech CT Circuit issues on 99R-3/9L56 test handle |
|
ALTALINK | 13-Aug-25 12:00 | 13-Aug-25 15:00 | 3 Hours
Continuous |
199L (347s AML Fox Creek - 741s ATC Fox Creek) | Update 347s199W breaker maintenance switch and associated circuits. | |
ATCO | 13-Aug-25 12:01 | 15-Aug-25 16:00 | 2.17 Days
Continuous |
825s 902 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
ALTALINK | 13-Aug-25 15:00 | 13-Aug-25 17:30 | 2.5 Hours
Daily |
199L (347s AML Fox Creek - 199AL tap) | Update 347s199E breaker maintenance switch and associated circuits. | |
ATCO | 14-Aug-25 09:00 | 14-Aug-25 17:00 | 8 Hours
Continuous |
876s 901T (876s Brintnell) | Investigate Ground Fault on Gas Trip 901T at 876S | |
SUNCOR | 16-Aug-25 08:00 | 26-Aug-25 20:00 | 10.5 Days
Continuous |
29EDD-56 29PT-191 (29EDD-56) | 29EDD56;29PT-191 SYSTEM;PM 5Y/10Y;29EDD56;29PP-41C SYSTEM;PM 5y | |
ALTALINK, EPCOR | 18-Aug-25 07:00 | 29-Aug-25 17:00 | 11.42 Days
Continuous |
1044L (EP 805s Jasper - 816s Petrolia), 816s P2405 (816s Petrolia), 816s P2406 (816s Petrolia), EP 805s J2403 (EP 805s Jasper), EP 805s J2404 (EP 805s Jasper) | 1044L Zones: Jasper: JDS25 LCR and Petrolia 1044L CT LCR | |
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 | |
ATCO | 18-Aug-25 11:00 | 19-Aug-25 17:00 | 30 Hours
Continuous |
786s 704 (786s High Level), 7L133 (786s High Level - 828s Sulphur Point) | BREAKER SF6 LTB145D1/B COMPLETE TESTING - 704 @ 786S | |
ATCO | 18-Aug-25 14:01 | 01-Sep-25 14:00 | 14 Days
Continuous |
732s 704 (732s Mitsue), 732s 705 (732s Mitsue), 732s 901 (732s Mitsue), 732s 902T (732s Mitsue), 732s 906 (732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ALTALINK | 19-Aug-25 07:00 | 30-Aug-25 18:00 | 11.46 Days
Continuous |
912L (63s Red Deer - 766s Nevis) | Arctic Arrow will be stringing overtop 912L STR 147-148 with the new CETO 962L/986L spans 165-166. | |
ATCO | 19-Aug-25 12:00 | 25-Aug-25 17:00 | 6.21 Days
Continuous |
9L912 (63s Red Deer - 766s Nevis), 766s 9L912D1 (766s Nevis) | Repair 9L912D1 line disconnect switch. Will coordinate with AltaLink |
|
ENMAX | 20-Aug-25 08:00 | 20-Aug-25 16:00 | 8 Hours
Continuous |
162B240-RB131 (SS-162) | HV Breaker Maintenance - 162B240-RB131. Dashpot Checks | |
ATCO | 20-Aug-25 08:30 | 21-Aug-25 16:00 | 31.5 Hours
Continuous |
786s 703 (786s High Level), 786s SVC (786s High Level) | BREAKER SF6 GL312 COMPLETE TESTING - 703 @ 786S | |
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 | 21-Aug-25 08:00 | 21-Aug-25 16:00 | 8 Hours
Continuous |
162B240-RB132 (SS-162) | HV Breaker Maintenance - 162B240-RB132. Dashpot Checks | |
ENMAX, ALTALINK | 22-Aug-25 07:00 | 26-Aug-25 17:00 | 4.42 Days
Continuous |
50L (44s Bearspaw Plant - SS-21) | Altalink outage. : Replacing structures 116 & 117 | |
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 | |
ENMAX | 25-Aug-25 08:00 | 25-Aug-25 16:00 | 8 Hours
Continuous |
162B240-RB136 (SS-162) | Breaker Maintenance - 162B240-RB136. Breaker Dashpot Checks - 162B240-RB136 | |
ATCO | 25-Aug-25 09:00 | 27-Aug-25 16:00 | 2.29 Days
Continuous |
825s 905 (825s Whitefish Lake) | BREAKER MAINTENANCE | |
BCH | 25-Aug-25 09:00 | 29-Aug-25 17:00 | 4.33 Days
Continuous |
5L96 (BCH Selkirk - BCH Vaseux Lake) | replace spacers and markerballs | AB-BC |
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 | |
ATCO | 25-Aug-25 09:30 | 29-Aug-25 17:30 | 4.33 Days
Continuous |
730s STATCOM (730s Rycroft), 730s 705 (730s Rycroft), 730s 702T (730s Rycroft) | cooling system warranty work from Hitachi | |
ATCO | 25-Aug-25 12:00 | 27-Aug-25 17:00 | 2.21 Days
Continuous |
888s 919C (888s Dover) | 888S Dover - REPLACE 919C PTs. They are damaged | |
ENMAX | 26-Aug-25 08:00 | 26-Aug-25 16:00 | 8 Hours
Continuous |
162B240-RB135 (SS-162) | HV Breaker Maintenance - 162B240-RB135 | |
ALTALINK | 26-Aug-25 08:00 | 27-Aug-25 18:00 | 1.42 Days
Continuous |
28s 12 (28s West Brooks) | 28s12 First Trip, maintenance, Doble CT's | |
ALTALINK | 28-Aug-25 13:00 | 06-Oct-25 09:00 | 38.83 Days
Continuous |
786L (799s Coleman - BCH Natal), 799s 786W (799s Coleman), 799s 138kV Bus (799s Coleman) | Remove s29 from foundation, repair foundation, install s29 and adjust | |
ENMAX, ALTALINK | 30-Aug-25 08:00 | 30-Aug-25 12:00 | 4 Hours
Continuous |
28.80L (42s Sarcee - SS-28), 28.2TR (SS-28) | Substation - Insulator Washing (Fall) | |
ATCO | 01-Sep-25 14:01 | 15-Sep-25 14:00 | 14 Days
Continuous |
732s 902T (732s Mitsue), 732s 503R (732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ATCO, ALTALINK | 02-Sep-25 07:00 | 10-Sep-25 18:00 | 8.46 Days
Continuous |
1036L (356s Milo - 554s Travers) | South Crew will be doing component replacement on 1036L (STR 5 - 101)See also 294976 1005L RB required due to proximity | |
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) | |
EPCOR | 02-Sep-25 07:00 | 12-Oct-25 17:00 | 40.42 Days
Continuous |
557s T2 (557s Castle Downs) | Castle Downs S/S Tx2 Bay Outage | |
ALTALINK | 02-Sep-25 07:30 | 12-Sep-25 16:00 | 10.35 Days
Continuous |
1325L (510s Sunnybrook - AML 511s Crossings) | 510s DIW Piping Repair, Annual Link Outage for various maintenance. | |
BCH | 02-Sep-25 09:00 | 05-Sep-25 17:00 | 3.33 Days
Continuous |
5L91 (BCH Ashton Creek - BCH Selkirk) | replace marker balls | AB-BC |
BCH | 02-Sep-25 09:00 | 17-Sep-25 09:00 | 15 Days
Continuous |
T3 (BCH Natal), 12CB23 (BCH Natal) | natal substation replacement and ETM install | AB-BC |
BCH | 02-Sep-25 10:00 | 01-Oct-25 16:00 | 29.25 Days
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA 5CB9 Project GM-0463 | |
BCH | 02-Sep-25 10:00 | 10-Oct-25 16:00 | 38.25 Days
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | MCA F26 AOP Placeholder | |
ALTALINK | 02-Sep-25 11:00 | 02-Sep-25 15:00 | 4 Hours
Daily |
801L (62s Brazeau Plant - 294s Brazeau Plant Outlet Works) | high side mobile disconnect | |
ALTALINK, GLPC | 02-Sep-25 12:00 | 02-Sep-25 17:00 | 5 Hours
Daily |
688L (199s East Airdrie - 688BL tap), 1055s T1 (1055s Sollair) | Replace PCB Lighting fixtures located within LOA | |
ALTALINK | 03-Sep-25 08:00 | 03-Sep-25 17:00 | 9 Hours
Continuous |
510s 2652 (510s Sunnybrook), 510s 2752 (510s Sunnybrook) | replace grading caps | |
ALTALINK | 03-Sep-25 08:00 | 04-Sep-25 16:30 | 1.35 Days
Continuous |
370s 2152 (370s North Lethbridge), 370s T3 (370s North Lethbridge) | First Trip, Breaker Maint. and investigate T3 oil leak. | |
ATCO | 03-Sep-25 09:00 | 09-Sep-25 09:00 | 6 Days
Continuous |
951S 907 (951s Thickwood Hills) | Installation of new POW relay/Protection | |
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 | |
ATCO | 06-Sep-25 09:00 | 09-Sep-25 09:00 | 3 Days
Continuous |
951s 1205 (951s Thickwood Hills) | 1205 Outage for POW relay addition project | |
ALTALINK, EPCOR | 08-Sep-25 07:00 | 12-Sep-25 17:00 | 4.42 Days
Continuous |
947L (89s Ellerslie - 987s Clover Bar), 987s C2402 (987s Clover Bar), 987s C2404 (987s Clover Bar) | Cloverbar: 947L Zone Doble and CDS27/CDS28/CDS29 Disconnect Maintenance | |
ALTALINK, EPCOR | 08-Sep-25 07:00 | 13-Sep-25 17:00 | 5.42 Days
Continuous |
657s SU2403 (657s Summerside), 657s SU2402 (657s Summerside), 657s T2 (657s Summerside) | Summerside: TX2 Zone Doble and Disconnect Maintenance | |
BCH | 08-Sep-25 09:00 | 18-Sep-25 17:00 | 10.33 Days
Continuous |
5L92 (BCH Cranbrook - BCH Selkirk) | replace insulators & spacers | AB-BC |
BCH | 08-Sep-25 09:00 | 18-Sep-25 17:00 | 10.33 Days
Continuous |
2L294 (BCH A. A. Lambert - BCH Cranbrook), T3 (BCH Cranbrook) | rating restoration work | AB-BC |
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) | 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 |
|
ATCO | 09-Sep-25 09:00 | 12-Sep-25 12:00 | 3.13 Days
Continuous |
951s 1201T (951s Thickwood Hills) | 900BS1 Outage for commissioning POW project | |
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 | |
SUNCOR | 10-Sep-25 08:00 | 19-Sep-25 20:00 | 9.5 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 | 10-Sep-25 10:00 | 10-Sep-25 12:00 | 2 Hours
Continuous |
12L44 (939s Livock - 951s Thickwood Hills) | 500KV Bus inspection | |
BCH | 12-Sep-25 13:00 | 26-Sep-25 17:00 | 14.17 Days
Continuous |
T4 (BCH Natal) | Natal substation replacement and ETM install | AB-BC |
ALTALINK | 14-Sep-25 08:30 | 14-Sep-25 18:30 | 10 Hours
Daily |
89s T2 (89s Ellerslie) | PRC005 testing of GDRs, gas detector replacement on 1 phase, testing of sudden pressure relief devices. | |
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 | 19-Sep-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 | 15-Sep-25 09:30 | 19-Sep-25 17:00 | 4.31 Days
Continuous |
920L (71s Lamoureux - 557s Castle Downs) | EPCOR 920LE Zone Doble and 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) | Replacing structures 16 and 76 Replacing arms and insulators on structure 170 | |
BCH | 16-Sep-25 09:00 | 19-Sep-25 17:00 | 3.33 Days
Continuous |
5L72 (BCH Mica G.S. - BCH Nicola) | F26 AOP NERC CN PM on NIC 5CB3, 5CB13 and 5B43. CPC to enter PN's OOS OAT
|
|
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 | 18-Sep-25 08:00 | 18-Sep-25 18:00 | 10 Hours
Continuous |
7.84L (SS-7 - SS-36), 36B138-36BT3 (SS-36), 36.1TR (SS-36), 36.3TR (SS-36), 36B138-36.81 (SS-36), 36.81L (44s Bearspaw Plant - SS-36) | Substation - Insulator Washing (Fall) | |
ALTALINK | 19-Sep-25 07:00 | 30-Sep-25 17:00 | 11.42 Days
Continuous |
1201L (520s Bennett - BCH Cranbrook) | South Crew will be completing component replacement from 1201L21 – 1201L435 | AB-BC |
ALTALINK | 19-Sep-25 07:00 | 30-Sep-25 17:00 | 11.42 Days
Continuous |
799s 786W (799s Coleman), 786L (799s Coleman - BCH Natal) | 786L required to be open due to 1201L as per AESO Rule | AB-BC |
ALTALINK | 19-Sep-25 07:00 | 30-Sep-25 17:00 | 11.42 Days
Continuous |
48s 887X (48s Pocaterra), 887L (48s Pocaterra - 978s BCH Britt Creek) | 887L required to be open due to 1201L as per AESO Rule | AB-BC |
BHE Canada | 19-Sep-25 07:00 | 30-Sep-25 17:00 | 11.42 Days
Continuous |
MATL (120s Picture Butte - Montana) | align with 1201L outage | AB-MATL |
AESO | 19-Sep-25 07:00 | 30-Sep-25 17:00 | 11.42 Days
Continuous |
Path 1 (AIES Islanding) | align with 1201L outage | AB-BC |
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 | |
ATCO | 20-Sep-25 08:00 | 27-Sep-25 18:00 | 7.42 Days
Continuous |
7L228 (845s Big Mountain - 7L20 tap) | Outage on 7L228 for line maintenance program to change out following Structures. 652,651,648,647,608,611,578,574,534,533,529,528,526,500,499,495,470,471,479,457,456,453,447,441,437,435,433,428 |
|
SUNCOR | 20-Sep-25 08:00 | 30-Sep-25 20:00 | 10.5 Days
Continuous |
29EDD-34 29PT-340 (29EDD-34) | 29EDD34;29PT-340 SYSTEM;PM 5y,10y; 29EDD34;29PP-102 SYSTEM;PM 5y,10y |
|
ENMAX, ALTALINK | 21-Sep-25 08:00 | 07-Oct-25 16:00 | 16.33 Days
Continuous |
50L (44s Bearspaw Plant - SS-21), 21.1C (SS-21), 21.2TR (SS-21) | 21.2TR Replacement. Decommission, remove existing 21.2TR and associated equipment | |
ENMAX, ALTALINK | 21-Sep-25 08:00 | 07-Oct-25 16:00 | 16.33 Days
Continuous |
50L (44s Bearspaw Plant - SS-21) | ENMAX - 21.2TR Replacement. Decommission, remove existing 21.2TR and associated equipment | |
ALTALINK, EPCOR | 22-Sep-25 07:00 | 25-Sep-25 17:00 | 3.42 Days
Continuous |
947L (89s Ellerslie - 987s Clover Bar) | Cloverbar: 947L Zone Doble and CDS27/CDS28/CDS29 Disconnect Maintenance | |
EPCOR | 22-Sep-25 07:00 | 03-Oct-25 17:00 | 11.42 Days
Continuous |
987s T1 (987s Clover Bar), 987s C2401 (987s Clover Bar), 987s C2403 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) | Cloverbar: TX1 LCR P&C Commissioning and Initial Energization | |
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 | |
Lethbridge | 22-Sep-25 08:00 | 22-Sep-25 17:00 | 9 Hours
Continuous |
674s 725W (674s Bowron) | Salvage old Transformer Protection Trips from early project in spring | |
ALTALINK | 22-Sep-25 10:00 | 22-Sep-25 17:00 | 7 Hours
Daily |
725L (674s Bowron - 725BL tap) | Test/Trip 674ss T1 Protections | |
ENMAX | 22-Sep-25 12:00 | 22-Sep-25 18:00 | 6 Hours
Continuous |
23.80L (74s Janet - SS-23), 23.4TR (SS-23) | Substation - Insulator Washing (Fall) | |
ALTALINK | 22-Sep-25 12:30 | 25-Sep-25 16:30 | 3.17 Days
Continuous |
310p T30 (310p Sundance) | Bushing replacement, maintenance, and leak repair | |
ATCO | 22-Sep-25 13:00 | 25-Sep-25 16:00 | 3.13 Days
Continuous |
7L28 (717s Ethel Lake - 846s Grand Centre) | 7L28 Line to ground clearance mitigation | |
ALTALINK, EPCOR | 22-Sep-25 13:00 | 25-Sep-25 17:00 | 3.17 Days
Continuous |
1043L (320p Keephills - 367s Harry Smith), 320p 352 (320p Keephills), 320p 252 (320p Keephills) | Replace 320p289 | |
Lethbridge | 23-Sep-25 08:00 | 23-Sep-25 17:00 | 9 Hours
Continuous |
674s 725E (674s Bowron) | Salvage old Protection Trips from early project at 674s | |
ALTALINK | 23-Sep-25 08:00 | 23-Sep-25 17:00 | 9 Hours
Daily |
725L (674s Bowron - 725AL tap) | Test/Trip 674ss T1 Protections | |
ALTALINK, TRANSALTA | 26-Sep-25 09:00 | 26-Sep-25 12:00 | 3 Hours
Daily |
33s T1 (33s Spray) | testing | |
ALTALINK, TRANSALTA | 26-Sep-25 13:00 | 26-Sep-25 16:00 | 3 Hours
Daily |
33s T2 (33s Spray) | testing | |
ATCO | 28-Sep-25 09:00 | 05-Oct-25 15:00 | 7.25 Days
Continuous |
7L20 (740s H.R. Milner - 810s Dome Cutbank) | Outage on 7L20 for line maintenance program to change out following Structures. 69,66,65,64,62,60,59,54,53 |
|
ALTALINK | 29-Sep-25 12:00 | 03-Oct-25 18:30 | 4.27 Days
Continuous |
89s T2 (89s Ellerslie) | 89s T2 Doble and maintenance. Replace gas detector relay. Update Qualitrol settings. Repair oil leaks. | |
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 | |
ATCO | 29-Sep-25 14:01 | 13-Oct-25 14:00 | 14 Days
Continuous |
732s 701 (732s Mitsue), 732s 702 (732s Mitsue), 732s 901T (732s Mitsue), 732s 902 (732s Mitsue), 732s 903 (732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ALTALINK, EPCOR | 01-Oct-25 07:00 | 02-Oct-25 17:00 | 1.42 Days
Continuous |
1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap), 1045AL (320p Keephills - 1045L tap), EP 805s J2406 (EP 805s Jasper), EP 805s J2407 (EP 805s Jasper) | insulator repair | |
ALTALINK, EPCOR | 01-Oct-25 07:00 | 02-Oct-25 18:00 | 1.46 Days
Continuous |
1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) | Aerial: Insulator Repair and Relay: Op Checks | |
EPCOR | 01-Oct-25 07:00 | 03-Oct-25 17:00 | 2.42 Days
Continuous |
T4 (Poundmaker), 72PM25 (Poundmaker - Meadowlark), PM721 (Poundmaker) | Poundmaker: TX4 Tap Changer Sample Pipe Install | |
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 | |
ALTALINK | 02-Oct-25 07:00 | 02-Oct-25 12:00 | 5 Hours
Daily |
722L (107s Westfield - 368s Burdett) | Remove PCB Lighting fixture located within LOA at 107s | |
ALTALINK | 02-Oct-25 08:15 | 02-Oct-25 13:45 | 5.5 Hours
Daily |
853L (28s West Brooks - 853AL tap), 853L75 (853AL tap), 28s 25 (28s West Brooks), 28s 28 (28s West Brooks) | Insulator replacement | |
ALTALINK | 03-Oct-25 08:00 | 03-Oct-25 14:00 | 6 Hours
Daily |
1052L (28s West Brooks - 324s Cassils) | Replace 28s 1052L Strain Insulators, See also 294659 827L RB, & 1051L (28s-324s) - RB Required due to proximity. | |
ALTALINK | 06-Oct-25 08:30 | 06-Oct-25 16:30 | 8 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Open "Open Point 'C' 170L to 786L removing bypass around 799s. | AB-BC |
ATCO | 06-Oct-25 09:00 | 09-Oct-25 16:00 | 3.29 Days
Continuous |
969s 701T (969s Lindbergh) | replace failing bushings on transformer | |
BCH | 06-Oct-25 09:00 | 17-Oct-25 17:00 | 11.33 Days
Continuous |
2L112 (BPA Boundary - BCH Nelway), 2D24 (BCH Nelway), 2D2CB7 (BCH Nelway) | NLY 2SA2 2SA12 replacement, BC maintenance does not affect the Alberta ATC | 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 | 06-Oct-25 13:00 | 09-Oct-25 16:00 | 3.13 Days
Continuous |
7L28 (717s Ethel Lake - 846s Grand Centre) | 7L28 Line to ground clearance mitigation | |
ALTALINK | 07-Oct-25 06:00 | 11-Oct-25 18:00 | 4.5 Days
Continuous |
1034L (244s Bowmanton - 324s Cassils) | Install new span of OPGW between 179-180, install splice boxes on structure 179 & 180, terminate the existing OPGW. | |
ATCO | 07-Oct-25 07:00 | 07-Oct-25 19:00 | 12 Hours
Continuous |
7L79 (771s Veteran - 892s Ribstone Creek), 7L696 (508s Lakesend - 892s Ribstone Creek) | Installing interspacers on 7L79 | |
ALTALINK | 07-Oct-25 07:00 | 10-Oct-25 18:00 | 3.46 Days
Continuous |
944L (132s Ware Junction - 275s Jenner) | Modifying existing structure 944L156 from a tangent assembly to a floating DE/phase raise configuration to tap onto a new adjacent substation. See also SAP: 294514 951L RB required due to proximity | |
ALTALINK | 07-Oct-25 12:30 | 07-Oct-25 16:00 | 3.5 Hours
Continuous |
786L (799s Coleman - BCH Natal) | Remove breakers for Open Point 'D' at Str122. | AB-BC |
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 | 09-Oct-25 07:00 | 10-Oct-25 18:00 | 1.46 Days
Continuous |
786L (799s Coleman - BCH Natal) | Replacing complete dead end structure due to Woodpecker damage (STR 113) | |
ATCO | 13-Oct-25 14:01 | 27-Oct-25 14:00 | 14 Days
Continuous |
732s 701 (732s Mitsue), 732s 702 (732s Mitsue), 732s 901T (732s Mitsue), 732s 501R (732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ALTALINK | 14-Oct-25 06:00 | 17-Oct-25 18:00 | 3.5 Days
Continuous |
100L (498s Tilley - 895s Suffield) | Install new tap structure for 100AL connections, and modify adjacent structures 242 & 243. | |
EPCOR | 14-Oct-25 07:00 | 14-Oct-25 17:00 | 10 Hours
Continuous |
805s T4 (805s Jasper) | Jasper: TX4 Conservator Inspection | |
ALTALINK, EPCOR | 14-Oct-25 07:00 | 18-Oct-25 17:00 | 4.42 Days
Continuous |
1058L (657s Summerside - EP 803s Lambton), EP 803s L2403 (EP 803s Lambton), EP 803s L2404 (EP 803s Lambton) | 1058L: Lambton CVT and Surge Arrestors LCR's | |
ALTALINK | 14-Oct-25 07:00 | 24-Oct-25 13:30 | 10.27 Days
Continuous |
924L (102s Langdon - 356s Milo), 102s 6952 (102s Langdon), 102s 6852 (102s Langdon), 356s 952 (356s Milo), 356s 852 (356s Milo) | Line protection replacements and RAS175 scheme upgrades at 102s and 356s for the Georgetown Solar project. | |
ATCO | 14-Oct-25 10:00 | 14-Oct-25 17:30 | 7.5 Hours
Continuous |
801s 910 (801s Anderson) | BKR 910 Pole Low Oil at 801s Anderson | |
EPCOR | 20-Oct-25 07:00 | 24-Oct-25 17:00 | 4.42 Days
Continuous |
816s P2404 (816s Petrolia), 816s P2405 (816s Petrolia), 816s T2 (816s Petrolia) | Petrolia: TX2 Zone Doble and Disconnect Maintenance | |
EPCOR | 20-Oct-25 07:00 | 24-Oct-25 17:00 | 4.42 Days
Continuous |
805s T3 (805s Jasper), EP 805s J2404 (EP 805s Jasper), EP 805s J2405 (EP 805s Jasper) | Jasper: TX3 Zone Relay Maintenance | |
EPCOR, ALTALINK | 20-Oct-25 07:00 | 26-Oct-25 17:00 | 6.42 Days
Continuous |
240BA2 (629s Argyll Transfer Station - 814s Bellamy), 1056L (89s Ellerslie - 629s Argyll Transfer Station), 814s B2402 (814s Bellamy), 814s B2401 (814s Bellamy) | 240BA2 Zone: ADS1 LCR, Bellamy Transducer and DFR Cutovers, Bellamy 240kV SF6 Gas Tests and Leak Checks | |
ALTALINK, EPCOR | 20-Oct-25 07:00 | 26-Oct-25 17:30 | 6.44 Days
Continuous |
1056L (89s Ellerslie - 629s Argyll Transfer Station) | 240BA2 Zone: ADS1 LCR, Bellamy Transducer and DFR Cutovers, Bellamy 240kV SF6 Gas Tests and Leak Checks | |
ALTALINK | 22-Oct-25 07:00 | 23-Oct-25 18:00 | 1.46 Days
Continuous |
931L (28s West Brooks - 132s Ware Junction) | South Crew will be repairing conductor at 931L66 | |
EPCOR, ALTALINK | 27-Oct-25 07:00 | 02-Nov-25 16:00 | 6.42 Days
Continuous |
240BA3 (629s Argyll Transfer Station - 814s Bellamy), 814s B2406 (814s Bellamy), 814s B2407 (814s Bellamy), 1055L (629s Argyll Transfer Station - 816s Petrolia) | 240BA3 Zone: ADS2 LCR, Bellamy Transducer and DFR Cutovers, Bellamy 240kV SF6 Gas Tests and Leak Checks | |
ATCO, ALTALINK | 27-Oct-25 07:00 | 06-Nov-25 18:00 | 10.5 Days
Continuous |
1036L (356s Milo - 554s Travers) | Installing interphase spacers and repairing the inner of the conductor (STR 5-45) | |
ALTALINK, TRANSALTA | 29-Oct-25 10:00 | 29-Oct-25 14:00 | 4 Hours
Daily |
250p T1 (250p Bighorn Plant) | maintenance | |
ALTALINK | 30-Oct-25 08:00 | 30-Oct-25 17:30 | 9.5 Hours
Daily |
17s 12 (17s Benalto) | 17s12 PRC005 brk maint + first trip | |
ALTALINK, TRANSALTA | 30-Oct-25 10:00 | 30-Oct-25 14:00 | 4 Hours
Daily |
250p T2 (250p Bighorn Plant) | maintenance | |
EPCOR | 03-Nov-25 07:00 | 09-Nov-25 17:00 | 6.42 Days
Continuous |
814s T1 (814s Bellamy), 814s B2401 (814s Bellamy), 814s B2407 (814s Bellamy), BR721 (Rossdale) | Bellamy: TX1 Bushing Replacement and 240kv SF6 Gas Tests and Leak Checks | |
Syncrude | 03-Nov-25 08:00 | 10-Nov-25 16:00 | 7.33 Days
Continuous |
222 (Aurora), 222A (Aurora), 222B (Aurora), 223 (Aurora), 223A (Aurora), 223B (Aurora), D05 514 (D05), D05 511 (D05), D05 511A (D05), D05 511B (D05), D05 512 (D05), D05 512A (D05), D05 512B (D05) | SCL - Complete D05 Substation, Zone 3 260kV PM | |
ATCO | 03-Nov-25 09:00 | 10-Nov-25 16:00 | 7.29 Days
Continuous |
7L45 (798s Bridge Creek - 813s Little Smoky) | Pole replacement line to ground issue ( Line raise ) | |
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 | 04-Nov-25 09:00 | 04-Nov-25 16:00 | 7 Hours
Continuous |
822s 701 (822s Wolf Lake), 7L587 (822s Wolf Lake - 826s Marguerite Lake) | Inspect CT wiring at RTXP test switch Replace RTXP Test switch if no issue found with wiring terminations Recommission affected test switch (Burden, logic testing) |
|
Syncrude | 11-Nov-25 08:00 | 18-Nov-25 16:00 | 7.33 Days
Continuous |
D05 512 (D05), D05 512A (D05), D05 512B (D05), D05 513 (D05), D05 513A (D05), D05 513B (D05), D05 515 (D05) | SCL - D05 Substation Zone 4 260kV PM with isolation of RL-2. | |
ATCO | 13-Nov-25 09:00 | 27-Nov-25 17:00 | 14.33 Days
Continuous |
840s McNeill Station | Replace failed control system parts | |
EPCOR | 17-Nov-25 07:00 | 23-Nov-25 17:00 | 6.42 Days
Continuous |
814s B2402 (814s Bellamy), 814s B2406 (814s Bellamy), 814s T2 (814s Bellamy), BR722 (Rossdale) | Bellamy: TX2 Bushing Replacement and 240kv SF6 Gas Tests and Leak Checks | |
ALTALINK | 17-Nov-25 08:30 | 20-Nov-25 16:30 | 3.33 Days
Continuous |
913L (69s North Barrhead - 732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ATCO | 17-Nov-25 09:00 | 20-Nov-25 16:00 | 3.29 Days
Continuous |
732s 903 (732s Mitsue), 732s 904 (732s Mitsue), 9L913 (69s North Barrhead - 732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
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 ) | |
ATCO | 21-Nov-25 09:00 | 24-Nov-25 16:00 | 3.29 Days
Continuous |
732s 904 (732s Mitsue), 732s 906 (732s Mitsue), 9L56 (720s Wabasca - 732s Mitsue) | Protection upgrade. Remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller. | |
ENMAX, ALTALINK | 21-Nov-25 18:00 | 23-Nov-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 | 21-Nov-25 18:00 | 23-Nov-25 08:00 | 1.58 Days
Continuous |
936L (5s East Calgary - 102s Langdon) | Crew working in vicinity of 937L | |
ENMAX, ALTALINK | 21-Nov-25 18:00 | 23-Nov-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 | |
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 | |
ENMAX, ALTALINK | 28-Nov-25 18:00 | 30-Nov-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 | 28-Nov-25 18:00 | 30-Nov-25 08:00 | 1.58 Days
Continuous |
937L (5s East Calgary - 102s Langdon) | Crew working in vicinity of 936L | |
ENMAX, ALTALINK | 28-Nov-25 18:00 | 30-Nov-25 08:00 | 1.58 Days
Continuous |
937L (5s East Calgary - 102s Langdon) | Crew working in vicinity of 936L | |
ATCO | 01-Dec-25 13:00 | 05-Dec-25 17:00 | 4.17 Days
Continuous |
732s 901 (732s Mitsue), 732s 902 (732s Mitsue), 9L40 (732s Mitsue - 809s Louise Creek) | 240kV Bus and 144kV Breaker Fail Protection upgrade + Scada Upgrade. Cutover 901, 902, and 9L40 to new Scada system, including end to ends with SOC. |
|
ATCO | 08-Dec-25 10:00 | 15-Dec-25 16:00 | 7.25 Days
Continuous |
9L40 (732s Mitsue - 809s Louise Creek) | Replace 4 damaged poles ( Need winter access) Structures 221, 286, 299 and 304 | |
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 | 12-Jan-26 13:00 | 21-Jan-26 09:00 | 8.83 Days
Continuous |
9L57 (939s Livock - 960s Birchwood Creek) | 9L57 Line to Ground Clearance Mitigation | |
ATCO | 26-Jan-26 13:00 | 04-Feb-26 09:00 | 8.83 Days
Continuous |
9L57 (939s Livock - 960s Birchwood Creek) | 9L57 Line to Ground Clearance Mitigation | |
ATCO | 09-Feb-26 13:00 | 18-Feb-26 09:00 | 8.83 Days
Continuous |
9L57 (939s Livock - 960s Birchwood Creek) | 9L57 Line to Ground Clearance Mitigation | |
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 |
|
ATCO | 23-Feb-26 13:00 | 04-Mar-26 09:00 | 8.83 Days
Continuous |
9L57 (939s Livock - 960s Birchwood Creek) | 9L57 Line to Ground Clearance Mitigation | |
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 |
|
ALTALINK | 03-Mar-26 07:00 | 09-Mar-26 17:00 | 6.38 Days
Continuous |
944L (132s Ware Junction - 275s Jenner) | Line outage to replace line protection relays at 132s Ware Junction, replace relay comm cards and update settings on line protections at 275s Jenner and implement third terminal 1080s Jurassic line protection relays. End to end testing between all three sites. | |
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 | 09-Mar-26 13:00 | 18-Mar-26 09:00 | 8.83 Days
Continuous |
9L57 (939s Livock - 960s Birchwood Creek) | 9L57 Line to Ground Clearance Mitigation | |
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) | 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 |
|
ENMAX, ALTALINK | 03-Apr-26 08:00 | 03-Apr-26 18:00 | 10 Hours
Continuous |
985L (74s Janet - SS-25) | Surge Arrestor Power Factor Test - 25MD240-985 | |
ENMAX, ALTALINK | 04-Apr-26 08:00 | 04-Apr-26 18:00 | 10 Hours
Continuous |
1003L (74s Janet - SS-25) | Surge Arrestor Power Factor Test - 25MD240-1003 | |
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 | |
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 | 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 |
|
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 | |
ATCO, ALTALINK | 10-May-26 07:00 | 15-May-26 17:00 | 5.42 Days
Continuous |
7LA114 (658s Chard - 7L114 tap), 7L114 (72s Leismer - 7LA114 tap), 7L114 (907s Waddell - 7LA114 tap), 907s Waddell | AltaLink outage on 72sT2 causing an outage to 7L114 at 907S | |
ALTALINK | 10-May-26 07:00 | 15-May-26 18:00 | 5.46 Days
Continuous |
72s T2 (72s Leismer), 72s 144kV Bus (72s Leismer) | Transformer maintenance, doble, install Coresense & Qualitrol | |
SUNCOR | 18-May-26 08:00 | 24-May-26 20:00 | 6.5 Days
Continuous |
29PL9-12 (29EDD-34 - 29EDD-65) | 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 |
972s 905B (972s Tinchebray), 972s 906A (972s Tinchebray) | 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 | 16-Jun-26 10:00 | 18-Jun-26 16:00 | 2.25 Days
Continuous |
9L74 (888s Dover - 960s Birchwood Creek) | 9L74 bypass. Cutover line to temp bypass structures | |
ALTALINK | 10-Aug-26 09:30 | 13-Aug-26 17:00 | 3.31 Days
Continuous |
702L (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
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 | |
ALTALINK | 17-Aug-26 10:00 | 20-Aug-26 16:30 | 3.27 Days
Continuous |
702L (137s Sedgewick - 757s Battle River) | Interphase spacers and pole replacements | |
ALTALINK, ATCO, FMGW | 18-Aug-26 08:00 | 19-Aug-26 17:00 | 1.38 Days
Continuous |
964AL (1024s Granlea - 964L tap), 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), 1024s 489-600201 (1024s Granlea) | maintenance activities (testing and inspection) of electrical equipment | |
ATCO | 19-Oct-26 10:00 | 22-Oct-26 16:00 | 3.25 Days
Continuous |
888s 906 (888s Dover) | 21B/9L74 relay replacement. Cutover breaker and CT to new protection | |
ATCO | 23-Oct-26 10:00 | 26-Oct-26 16:00 | 3.25 Days
Continuous |
888s 905 (888s Dover) | 21B/9L74 relay replacement. Cutover breaker and CT to new protection | |
ATCO | 02-Nov-26 10:00 | 05-Nov-26 16:00 | 3.25 Days
Continuous |
9L74 (888s Dover - 960s Birchwood Creek) | 21B/9L74 relay three terminal line testing | |
ATCO | 09-Nov-26 10:00 | 12-Nov-26 16:00 | 3.25 Days
Continuous |
888s 906 (888s Dover) | 21A/9L74 relay replacement. Cutover breaker and CT to new protection | |
ATCO | 13-Nov-26 10:00 | 16-Nov-26 16:00 | 3.25 Days
Continuous |
888s 905 (888s Dover) | 21B/9L74 relay replacement. Cutover breaker and CT to new protection | |
ATCO | 23-Nov-26 10:00 | 26-Nov-26 16:00 | 3.25 Days
Continuous |
9L74 (888s Dover - 960s Birchwood Creek) | 21B/9L74 relay three terminal line testing | |
ATCO | 09-Feb-27 09:00 | 11-Feb-27 17:00 | 2.33 Days
Continuous |
7L228 (845s Big Mountain - 7L20 tap) | AESO project P2716 - Install 7L228 bypass to facilitate the installation of new line switches for the new 7LA228 T-tap line connection to the new 2103S Pakenham substation Open 7L228, replace structures 551 and 551A, connect bypass. |
|
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, 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, 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 | 16-Mar-27 09:00 | 18-Mar-27 17:00 | 2.33 Days
Continuous |
7L228 (845s Big Mountain - 7L20 tap) | AESO project P2716 - Disconnect bypass, connect new 7LA228D1 to 7LA228 Str #2, connect 7L228 to 7L228D2, connect 7L228 to 7L228D3. Renumber existing line switches 7L228D2 - D4, 7L228D3 - D5, 7L228D4 - D6 Commission DTT from Pakenham to Big Mountain |
|
ATCO | 26-Mar-27 09:00 | 29-Mar-27 17:00 | 3.33 Days
Continuous |
740s 704 (740s H.R. Milner), 7L20 (740s H.R. Milner - 810s Dome Cutbank) | AESO project P2716 - cut over RAS #171 wiring at 740S, relay programming, commission LTO 7L20/7L228 | |
ATCO | 12-Apr-27 10:00 | 19-Apr-27 17:00 | 7.29 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 |
|
ATCO | 03-May-27 10:00 | 06-May-27 17:00 | 3.29 Days
Continuous |
7L22 (811s Clairmont Lake - 7L88 tap) | 7L22/21B relay upgrade at 811S Clairmont Lake Upon completion new 2061S Dobbs substation ready to energize |
|
ATCO | 10-May-27 10:00 | 11-May-27 17:00 | 31 Hours
Continuous |
7L03 (749s Flyingshot Lake - 7L09 tap) | Cutover and commission RAS analogs and LTO to 790S Poplar Hill RAS Hub | |
ATCO | 12-May-27 10:00 | 13-May-27 17:00 | 31 Hours
Continuous |
7L03 (731s Elmworth - 7L09 tap) | Cutover and commission LTO to 790S Poplar Hill RAS Hub | |
ATCO | 14-May-27 10:00 | 15-May-27 17:00 | 31 Hours
Continuous |
7L69 (731s Elmworth - 815s Goodfare) | Cutover and commission LTO to 790S Poplar Hill RAS Hub | |
ATCO | 16-May-27 10:00 | 17-May-27 17:00 | 31 Hours
Continuous |
7L07 (790s Poplar Hill - 815s Goodfare) | Cutover and commission LTO to 790S Poplar Hill RAS Hub | |
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 |
|
ALTALINK, ATCO, FMGW | 17-Aug-27 08:00 | 18-Aug-27 17:00 | 1.38 Days
Continuous |
964AL (1024s Granlea - 964L tap), 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), 1024s 489-600201 (1024s Granlea) | maintenance activities (testing and inspection) of electrical equipment | |
ATCO | 08-Nov-27 09:00 | 11-Nov-27 17:00 | 3.33 Days
Continuous |
ALC02L (409s Shell Scotford - 879s Upgrader) | Install new Deadend corner structure on ALC02L | |
ATCO | 08-Nov-27 09:00 | 11-Nov-27 17:00 | 3.33 Days
Continuous |
ALC01L (408s Air Liquide Scotford - 409s Shell Scotford) | Install new Deadend corner structure on ALC02L. |
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: | 2025-06-25 14:50:06 |
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 |