Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2024-07-20

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:
  1. it affects a transmission facility operating at two hundred and forty (240) kV or greater;
  2. it affects an intertie;
  3. it affects an element connecting facilities owned by two (2) or more different legal owners of transmission facilities;
  4. it affects an element that connects a generating unit or an aggregated generating facility to the interconnected electric system;
  5. it requires the ISO to issue a dispatch or directive for generation in order to facilitate the planned outage;
  6. it affects a cutplane limit;
  7. it limits or reduces the operability of a synchronous condenser, static VAr compensator, static compensator or other similar dynamic device; or
  8. it affects high voltage direct current facilities.
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
EPCOR 28-Jun-24 17:00 26-Jul-24 17:00 28 Days
Continuous		 816s P2406 (816s Petrolia) breaker LCR  
ALTALINK, EPCOR 08-Jul-24 07:00 31-Jul-24 17:00 23.42 Days
Continuous		 1058L (657s Summerside - EP 803s Lambton), EP 803s L2404 (EP 803s Lambton), EP 803s L2403 (EP 803s Lambton) steel structure refurbishment  
ALTALINK 15-Jul-24 10:00 22-Jul-24 14:00 7.17 Days
Continuous		 138s T1 (138s Windy Flats), 497L (138s Windy Flats - 1063s Windrise), 138s 138kV Bus 1 (138s Windy Flats) Transformer internal inspection and repair from Siemens 138s T1 Tx18979  
ALTALINK 16-Jul-24 08:00 29-Jul-24 17:00 13.38 Days
Continuous		 463L (15s Fort Macleod - 463AL tap) crossarm & insulator replacement  
SUNCOR 20-Jul-24 08:00 28-Jul-24 18:00 8.42 Days
Continuous		 29PL9-24 (29EDD-94 Voyageur - 29EDD-60 Inglis Island) BP-29PL9-24 OPGW Installation between STR 1-4
  
ALTALINK 22-Jul-24 07:00 25-Jul-24 18:00 3.46 Days
Continuous		 172L (254s Coaldale - 370s North Lethbridge) Updating and testing new line protection settings and RAS Relays for the new RAS 219. Adding 43M's to 254s172W (952) & 370s172E (1852)  
EPCOR 22-Jul-24 07:00 27-Jul-24 17:00 5.42 Days
Continuous		 330p 12TC2 (330p Genesee), 330p 1203 (330p Genesee), 330p 1206 (330p Genesee), 330p 1209 (330p Genesee), 330p 809 (330p Genesee), 330p 500kV Bus 2 (330p Genesee), 330p 1211 (330p Genesee), 330p 1215 (330p Genesee) Genesee: BUS 2 CVT and 1203 Doble and 12TC2 Tap Changer Maintenance and 1203, 1209, 12TC2 P&C Maintenance  
Syncrude 22-Jul-24 08:00 30-Jul-24 16:00 8.33 Days
Continuous		 89-216 (Aurora), 89-52 (Aurora), T11 (Aurora), 14 (Aurora), 213 (Aurora), 223 (Aurora), 24 (Aurora), 34 (Aurora) SCL - Perform maintenance on on T11 grounding transformer.  
ATCO 22-Jul-24 08:00 03-Aug-24 17:00 12.38 Days
Continuous		 788s 703 (788s Hotchkiss), 7L63 (788s Hotchkiss - 7LA63 tap) 703 breaker replacement  
ATCO 22-Jul-24 09:00 26-Jul-24 17:00 4.33 Days
Continuous		 849s 901T (849s Joslyn Creek) transformer maintenance, will require load transfer of 5L593 feeder to adjacent sub  
ATCO 22-Jul-24 09:00 26-Jul-24 17:30 4.35 Days
Continuous		 834s 708 (834s Wesley Creek), 834s 710 (834s Wesley Creek), 7L131 (834s Wesley Creek - 905s Meikle) 834S 708 Densimters replacement
Repair 708B Gang Switch at 834s Wesley Creek
834S Wesley Creek BREAKER 708 SF6 HPL PARTIAL TESTING
BREAKER SF6 HPL COMPLETE TESTING - 708 @ 834S
TCM Program. RTXP Test Switch Mitigation and Replacement: 50BF/708 @ 834S

Reduce GOI to: 708A & 708B on July 24th at 17:30		  
ATCO 22-Jul-24 09:30 26-Jul-24 17:30 4.33 Days
Continuous		 813s 902T (813s Little Smoky) TRANSFORMER CLASS1 TAP CHANGER - 902T @ 813S
TRANSFORMER 902T CLASS1 MAJOR TESTING		  
ATCO 22-Jul-24 11:00 25-Jul-24 15:00 3.17 Days
Continuous		 7L85 (801s Anderson - ATC 803s Bullpound) Cross arm and insulator replacement on 7L85  
ALTALINK 22-Jul-24 13:30 25-Jul-24 17:00 3.15 Days
Continuous		 74s 2552 (74s Janet) First trip and breaker maintenance.  
ALTALINK, EPCOR 23-Jul-24 07:00 24-Jul-24 17:00 1.42 Days
Continuous		 908L (89s Ellerslie - 816s Petrolia), 816s PDS13 (816s Petrolia), 816s P2401 (816s Petrolia), 816s P2406 (816s Petrolia) Petrolia: P2406 Breaker LCR Commissioning (PDS13 Op Checks)  
ALTALINK, EPCOR 23-Jul-24 07:00 24-Jul-24 17:00 1.42 Days
Continuous		 908L (89s Ellerslie - 816s Petrolia) Petrolia: P2406 Breaker LCR Commissioning (PDS13 Op Checks)  
SUNCOR 23-Jul-24 08:00 23-Jul-24 20:00 12 Hours
Continuous		 29EDD-34 29PT-341 (29EDD-34) BP-Modification on the wiring for the NGR, JB Butt splice (CG)  
SUNCOR 24-Jul-24 08:00 27-Jul-24 18:00 3.42 Days
Continuous		 29PL9-25 (29EDD-94 Voyageur - 29EDD-61 Stony Island) BP-29PL9-24 OPGW Installation between STR 1-4  
ALTALINK, EPCOR 25-Jul-24 07:00 26-Jul-24 17:00 1.42 Days
Continuous		 1044L (EP 805s Jasper - 816s Petrolia), 816s P2405 (816s Petrolia), 816s P2406 (816s Petrolia), 816s PDS14 (816s Petrolia) Petrolia: P2406 Breaker LCR Commissioning (PDS14 Op Checks)  
SUNCOR 25-Jul-24 08:00 25-Jul-24 20:00 12 Hours
Continuous		 29EDD-34 29PT-340 (29EDD-34) BP-Modification on the wiring for the NGR, JB Butt splice (CG)  
EPCOR 29-Jul-24 07:00 02-Aug-24 17:00 4.42 Days
Continuous		 330p 1201 (330p Genesee), 330p 1204 (330p Genesee), 330p 1207 (330p Genesee), 330P 12TC1 (330p Genesee), 330p 805 (330p Genesee) Genesee: BUS 1 CVT Doble and 1201A, 1204A, 1207A Disconnect Maintenance  
EPCOR 29-Jul-24 07:00 30-Aug-24 17:00 32.42 Days
Continuous		 816s P2404 (816s Petrolia) Petrolia: P2404 Breaker LCR  
ATCO 29-Jul-24 08:30 30-Jul-24 12:00 27.5 Hours
Continuous		 2029s ACF21 (2029s Heathfield) FILTER BANK AC MAINTENANCE @ HEATHFIELD 2029S ACF21, ACF22, ACF23  
ATCO 29-Jul-24 09:00 01-Aug-24 17:30 3.35 Days
Continuous		 801s 901T (801s Anderson), 801s Protection & Control (801s Anderson) 901T Major testing
tap changer maintenance.
PRC-005 testing
901T ETM/ITM setting update/wiring		  
ATCO 29-Jul-24 09:00 02-Aug-24 17:00 4.33 Days
Continuous		 2015s 901T (2015s Yeo) transformer maintenance,  
ATCO 29-Jul-24 09:00 09-Aug-24 17:30 11.35 Days
Continuous		 932s 901T (932s Pemukan), 932s Protection & Control (932s Pemukan) 901T Major testing
tap changer maintenance.
PRC-005 SPR testing		  
ATCO 29-Jul-24 09:30 30-Jul-24 17:30 1.33 Days
Continuous		 813s 901 (813s Little Smoky) BREAKER SF6 HGF COMPLETE TESTING 901  
ATCO 29-Jul-24 11:00 01-Aug-24 15:00 3.17 Days
Continuous		 7L85 (801s Anderson - ATC 803s Bullpound) Cross arm and insulator replacement on 7L85
Clearance Mitigation Structures 490 & 532		  
ALTALINK 29-Jul-24 13:00 01-Aug-24 17:30 3.19 Days
Continuous		 289s T2 (289s Saunders Lake) Doble, Maintenance, IDD monitor  
ALTALINK 29-Jul-24 14:30 30-Jul-24 17:00 26.5 Hours
Continuous		 59s 1152 (59s Peigan), 1049L (59s Peigan - 138s Windy Flats) 59s1152 first trip and gas density gauge.  
EPCOR 30-Jul-24 07:00 30-Jul-24 17:00 10 Hours
Continuous		 987s CC721 (987s Clover Bar), 987s T2 (987s Clover Bar) Cloverbar: Yard Lighting Upgrade (Pole by CC721)  
SUNCOR 30-Jul-24 08:00 13-Aug-24 16:00 14.33 Days
Continuous		 29EDD-94 29PS-392 (29EDD-94 Voyageur), 29EDD-94 29PS-393 (29EDD-94 Voyageur), 29EDD-94 407T (29EDD-94 Voyageur), 29EDD-94 29-952-9705 (29EDD-94 Voyageur), 29EDD-94 29-952-9704 (29EDD-94 Voyageur) BP-BPC-24-052 - 29PP-83 & 29PT-410; 5 Year PM
29PS-392 Bad contactor coil
29PT-407 - Replace AVR (CG)		  
ATCO 30-Jul-24 12:01 31-Jul-24 16:00 27.98 Hours
Continuous		 2029s ACF22 (2029s Heathfield) FILTER BANK AC MAINTENANCE @ HEATHFIELD 2029S ACF22,  
ALTALINK, TRANSALTA 31-Jul-24 09:00 01-Aug-24 16:00 31 Hours
Continuous		 59s T1 (59s Peigan), 616L (59s Peigan - 616AL tap) 59sT1 Cycling alarm DC ground repair.  
ATCO 31-Jul-24 09:30 01-Aug-24 17:30 1.33 Days
Continuous		 813s 904 (813s Little Smoky) BREAKER SF6 HGF COMPLETE TESTING 904  
ALTALINK 31-Jul-24 13:30 01-Aug-24 17:00 27.5 Hours
Daily		 205s 352 (205s Castle Rock Ridge) 205s352 HPL maint. First trip Thermostat replacement.  
ALTALINK 31-Jul-24 23:00 01-Aug-24 03:00 4 Hours
Daily		 62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 01-Aug-24 03:00 01-Aug-24 07:00 4 Hours
Daily		 62s 12 (62s Brazeau Plant) maintenance  
ALTALINK 01-Aug-24 08:30 01-Aug-24 17:30 9 Hours
Daily		 72s 652 (72s Leismer) 240kV Breaker Maintenance  
ATCO 01-Aug-24 08:30 02-Aug-24 12:00 27.5 Hours
Continuous		 2029s ACF23 (2029s Heathfield) FILTER BANK AC MAINTENANCE @ HEATHFIELD 2029S ACF23,  
SUNCOR 05-Aug-24 08:00 15-Aug-24 18:00 10.42 Days
Continuous		 29EDD-65 260kV Bus 29PP-0048 (29EDD-65), 29EDD-65 29-952-4811 (29EDD-65), 29EDD-65 29-952-4821 (29EDD-65) FB-29-952-4811, 4821 5y PM 29PP-48 SYSTEM;PM 5y (46555392, 46555395, 450237141)  
ALTALINK 06-Aug-24 07:00 06-Aug-24 17:00 10 Hours
Daily		 928s 180X (928s East Stavely) Crew will call in to operate 928s180X air break to check the proper status of the contacts to new AIS protection.  
EPCOR 06-Aug-24 07:00 06-Aug-24 17:00 10 Hours
Continuous		 987s T3 (987s Clover Bar) Cloverbar: Yard Lighting Upgrade (Pole by TX3)  
EPCOR 06-Aug-24 07:00 08-Aug-24 17:00 2.42 Days
Continuous		 T1 (EP Riverview), RW2405 (EP Riverview), RW2401 (EP Riverview), RWAB1 (EP Riverview) Riverview: TX1 Doble and RWAB1, RWDS1, RWDS10 Disconnect Maintenance  
ALTALINK 06-Aug-24 07:30 09-Aug-24 14:30 3.29 Days
Continuous		 510s ACF21 (510s Sunnybrook), 510s ACF22 (510s Sunnybrook) ACF21 filter bank inspection/maintenance, multiply Outdoor Grounding Switch Maintenances (510s2157, 510s2257)  
ENMAX 06-Aug-24 08:00 06-Aug-24 11:00 3 Hours
Continuous		 162B240-RB133 (SS-162) HV Breaker SF6 Gas Sample - 162B240-RB133  
ALTALINK 06-Aug-24 08:00 06-Aug-24 17:00 9 Hours
Daily		 180L (15s Fort Macleod - 180AL tap) Re-tie OHSW at structure 538 & 539.  
ATCO 06-Aug-24 08:30 08-Aug-24 17:00 2.35 Days
Continuous		 802s 704 (802s Michichi Creek), 7L128 (802s Michichi Creek - 7LA128 tap) BREAKER 704 MIN OIL HLR COMPLETE TESTING  
ATCO 06-Aug-24 09:00 09-Aug-24 17:00 3.33 Days
Continuous		 2015s 902T (2015s Yeo) transformer maintenance,  
ATCO 06-Aug-24 09:00 14-Aug-24 16:00 8.29 Days
Continuous		 7L64 (779s Chinchaga River - 789s Keg River) Changing Red Tag Poles from T&T  
BCH 06-Aug-24 09:00 16-Aug-24 17:00 10.33 Days
Continuous		 2L294 (BCH A. A. Lambert - BCH Nelway) 2L294 (AAL-NLY) replace structure BC maintenance does not affect the Alberta ATC AB-BC
ATCO 06-Aug-24 09:30 07-Aug-24 17:30 1.33 Days
Continuous		 813s 905 (813s Little Smoky) BREAKER SF6 HGF COMPLETE TESTING 905
  
ALTALINK, EPCOR 06-Aug-24 09:30 29-Aug-24 17:00 23.31 Days
Continuous		 1059L (EP 803s Lambton - 1059AL tap), 1059AL (52s East Industrial - 1059L tap), 1059L (38s East Edmonton - 1059AL tap), EP 803s L2401 (EP 803s Lambton), EP 803s L2404 (EP 803s Lambton), 52s E2401 (52s East Industrial), 52s T1 (52s East Industrial) Lambton: LDS8,1059L CVT LCR, and Steel Structure Refurbishment  
ALTALINK, EPCOR 06-Aug-24 09:30 29-Aug-24 17:00 23.31 Days
Continuous		 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap) Lambton: LDS8,1059L CVT LCR, and Steel Structure Refurbishment  
ATCO 06-Aug-24 10:00 09-Aug-24 16:00 3.25 Days
Continuous		 2075s ACF22 (2075s Newell), 2075s ACF23 (2075s Newell), 2075s ACF24 (2075s Newell) FILTER BANK AC MAINTENANCE @ NEWELL 2075S ACF22, 2075S ACF23, & 2075S ACF24  
ENMAX 06-Aug-24 11:00 06-Aug-24 13:00 2 Hours
Continuous		 162B240-RB131 (SS-162) HV Breaker SF6 Gas Sample - 162B240-RB131  
ENMAX 06-Aug-24 13:00 06-Aug-24 16:00 3 Hours
Continuous		 162B240-RB134 (SS-162) HV Breaker SF6 Gas Sample - 162B240-RB134  
ALTALINK 08-Aug-24 10:30 08-Aug-24 15:30 5 Hours
Daily		 42s 906N (42s Sarcee), 906L (17s Benalto - 42s Sarcee) PRC5 First Trip followed by maintenance.  
ALTALINK 12-Aug-24 07:00 20-Aug-24 13:00 8.25 Days
Continuous		 1097L (356s Milo – 611s Amber) Closing Open Point 'C' and completed final commissioning/testing  
ATCO 12-Aug-24 09:00 16-Aug-24 17:30 4.35 Days
Continuous		 700s 704 (700s Bonnyville), 7L146 (700s Bonnyville - 970s Bourque) HPL Breaker 704 Complete testing
Replace Densimeter Covers		  
ATCO 12-Aug-24 09:30 13-Aug-24 17:30 1.33 Days
Continuous		 813s 908 (813s Little Smoky) BREAKER SF6 HGF COMPLETE TESTING 908  
ATCO 12-Aug-24 10:00 15-Aug-24 17:00 3.29 Days
Continuous		 959s SVC (959s Lanfine) Converter inspection, fire system inspection  
ALTALINK 12-Aug-24 11:00 22-Aug-24 16:00 10.21 Days
Continuous		 676L (244s Bowmanton - 523s Bullshead) Install and commission new 676L protections at 244s and 523s pertaining to the Dunmore Project  
ALTALINK 12-Aug-24 14:30 13-Aug-24 17:00 26.5 Hours
Continuous		 562s 252 (562s Cypress) 562s252 Maint.  
ALTALINK 13-Aug-24 07:00 15-Aug-24 17:00 2.42 Days
Continuous		 83s T1 (83s Taber) The roof of the control building is leaking. Crew needs access to roof to repair. 25kV bus is within limits of approach when workers are on roof. Clearance cannot be achieved to perform work without an outage.  
ALTALINK 13-Aug-24 08:30 15-Aug-24 13:30 2.21 Days
Continuous		 103s 552 (103s Goose Lake) 103s552 First Trip, gas leak repair and Maint.  
SUNCOR 14-Aug-24 08:00 28-Aug-24 16:00 14.33 Days
Continuous		 29EDD-94 406T (29EDD-94 Voyageur), 29EDD-94 29-952-9702 (29EDD-94 Voyageur), 29EDD-94 29-952-9703 (29EDD-94 Voyageur), 29EDD-94 29-952-9704 (29EDD-94 Voyageur), 29EDD-94 29PS-399 (29EDD-94 Voyageur), 29EDD-94 29PS-391 (29EDD-94 Voyageur) BP-BPC-24-49 - 29EDD-94-29PT-409; 29PP-98; 29PP-67; 5 year PM 29PPS-399 Replace Coil; 29PT-406 Replace AVR; 29PS-391 (CG)  
ALTALINK 14-Aug-24 08:30 15-Aug-24 14:30 30 Hours
Continuous		 562s 1152 (562s Cypress) 562s252 Maint.  
ALTALINK, EPCOR 15-Aug-24 07:00 15-Aug-24 18:00 11 Hours
Daily		 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap) Cutover new alarms, controls, and statuses to new SCADA system.  
ENMAX, ALTALINK 16-Aug-24 08:00 16-Aug-24 16:00 8 Hours
Continuous		 240kV West Bus (SS-25), 25B240-D142 (SS-25), 25B240-D139 (SS-25), 25B240-D136 (SS-25), 25B240-D133 (SS-25), 1109L (SS-25 - SS-65), 25B240-D141 (SS-25) Summer substation washing 25MD-1109  
ENMAX, ALTALINK 17-Aug-24 08:00 18-Aug-24 16:00 1.33 Days
Continuous		 24.81L (SS-24 - SS-31), 24.83L (74s Janet - SS-24), 24.1TR (SS-24), 24B138-24BT3 (SS-24) Power Factor Test - 24B138-24.83-CT, 24PT138-Z31  
ENMAX, ALTALINK 17-Aug-24 08:00 18-Aug-24 18:00 1.42 Days
Continuous		 24.83L (74s Janet - SS-24) Power Factor Test - 24B138-24.83-CT, 24PT138-Z31.  
SUNCOR 18-Aug-24 08:00 22-Aug-24 18:00 4.42 Days
Continuous		 29PL9-25 (29EDD-94 Voyageur - 29EDD-61 Stony Island) BP(Pulkit) - 29PL9-25 Powerlines between 29EDD94 & 29EDD 61 Outage in order to Tie in & Initial Energization of Excitation Transformer 30PT-472  
ATCO 19-Aug-24 06:30 23-Aug-24 15:00 4.35 Days
Continuous		 7L153 (609s Wheatland - 804s Wintering Hills) maintenance  
EPCOR 19-Aug-24 07:00 22-Aug-24 17:00 3.42 Days
Continuous		 EP 803s T1 (EP 803s Lambton) Lambton: TX1 PDR and Conservator Leak Repair  
ALTALINK, EPCOR 19-Aug-24 07:00 25-Aug-24 17:00 6.42 Days
Continuous		 1239L (330p Genesee - 510s Sunnybrook), 330p 1205 (330p Genesee), 330p 1206 (330p Genesee) Genesee: 1239L CVT, Arrestor Doble and 1239LD, 1205b, 1206B Disconnect Maintenance and 1239L, 1205, 1206 P&C Maintenance  
SUNCOR 19-Aug-24 08:00 28-Aug-24 18:00 9.42 Days
Continuous		 29EDD-65 29-952-4813 (29EDD-65), 29EDD-65 29-952-4823 (29EDD-65), 29EDD-65 260kV Bus 29PP-0049 (29EDD-65) FB-29-952-4813, 4823 5y PM 29PP-49 system ;PM 5y  
Syncrude 19-Aug-24 08:00 02-Sep-24 16:00 14.33 Days
Continuous		 2235 (Syncrude Mildred Lake), 235 (Syncrude Mildred Lake), 234 (Syncrude Mildred Lake), Mildred T2 (Syncrude Mildred Lake) SCL - Complete replacement of potheads, and cables on Transformer T2  
ALTALINK, EPCOR 19-Aug-24 09:30 25-Aug-24 17:00 6.31 Days
Continuous		 1239L (330p Genesee - 510s Sunnybrook) Genesee: 1239L CVT, Arrestor Doble and 1239LD, 1205b, 1206B Disconnect Maintenance and 1239L, 1205, 1206 P&C Maintenance  
ATCO 19-Aug-24 10:00 23-Aug-24 16:00 4.25 Days
Continuous		 732s 901T (732s Mitsue), 732s 501R (732s Mitsue), 732s Protection & Control (732s Mitsue) PRC-005 - SPR TESTING - TRANSFORMER 901T @ 732S, PRC-005 - TRIP COIL TESTING - BREAKER 501 @ 732S
TCM Program. RTXP Test Switch Mitigation and Replacement: 87T-A/901T, 87T-B/901T, 50-51TV-59/901T 		 
ALTALINK 19-Aug-24 12:30 20-Aug-24 17:00 28.5 Hours
Daily		 205s 452 (205s Castle Rock Ridge) 205s452 Maint. First Trip  
ALTALINK 19-Aug-24 13:00 22-Aug-24 17:30 3.19 Days
Continuous		 89s 952 (89s Ellerslie) Breaker maint. + First Trip, repair riser hot spot  
ALTALINK 19-Aug-24 13:30 22-Aug-24 17:30 3.17 Days
Continuous		 410s T1 (410s Josephburg) Rad leaks, doble and LR/SFRA testing, added more T1 leaks  
ALTALINK, EPCOR 20-Aug-24 07:15 29-Aug-24 16:45 9.4 Days
Continuous		 37s 82 (37s North Calder), 37s 88 (37s North Calder), 920L (37s North Calder - 557s Castle Downs) Remove old breaker (37s88). New foundation screw piles, install new breaker (37s88). Remove switch 37s87 and strengthen switch support structure. Install switch and risers. Install new string Insulators Wire new breaker and install risers  
BCH 20-Aug-24 09:00 25-Aug-24 17:00 5.33 Days
Continuous		 5L92 (BCH Cranbrook - BCH Selkirk) 5L92 replace insulators & spacers BC maintenance does not affect the Alberta ATC AB-BC
ATCO 20-Aug-24 09:30 21-Aug-24 17:30 1.33 Days
Continuous		 834s 903 (834s Wesley Creek) 903 B Phase Counter Replacement at 834s Wesley Creek
PRC-005 - TRIP COIL TESTING 		 
ENMAX, ALTALINK 21-Aug-24 07:00 25-Aug-24 18:00 4.46 Days
Continuous		 50L (44s Bearspaw Plant - SS-21) Repair woodpecker damage at structures 119 & 122. Replace structures 116 & 117.  
EPCOR 22-Aug-24 07:00 23-Aug-24 17:00 1.42 Days
Continuous		 816s T2 (816s Petrolia), 816s P2404 (816s Petrolia), 816s P2405 (816s Petrolia) Petrolia: P2404 Breaker LCR Commissioning (PAB2 Op Checks)  
ENMAX 22-Aug-24 08:00 22-Aug-24 16:00 8 Hours
Continuous		 23.80L (74s Janet - SS-23), 23.4TR (SS-23) 23 Sub Auto switching protection Upgrade  
ATCO 22-Aug-24 08:00 27-Aug-24 12:00 5.17 Days
Continuous		 7L224 (650s Hansman Lake - 774s Monitor) Pole change under TCM L-L mitigation project 1102671  
ALTALINK 22-Aug-24 08:00 27-Aug-24 16:00 5.33 Days
Continuous		 650s 224 (650s Hansman Lake) Pole change under TCM L-L mitigation project 1102671  
ATCO 22-Aug-24 09:30 23-Aug-24 17:30 1.33 Days
Continuous		 834s 904 (834s Wesley Creek) RTXP Test Switch Mitigation and Replacement
BREAKER SF6 HPL COMPLETE TESTING
PRC-005 - TRIP COIL TESTING 		 
SUNCOR 23-Aug-24 08:00 31-Aug-24 18:00 8.42 Days
Continuous		 29PL9-24 (29EDD-94 Voyageur - 29EDD-60 Inglis Island) BP(Pulkit) - 29PL9-24 Powerlines between 29EDD94 & 29EDD60 Outage in order to Tie in & Initial Energization of Excitation Transformer 30PT-471  
EPCOR, ALTALINK 26-Aug-24 07:00 26-Aug-24 17:00 10 Hours
Continuous		 665s D2403 (665s Dome), 909L (310p Sundance - 665s Dome) Dome: D2403 Dash Pot Repair (042072)  
EPCOR 26-Aug-24 07:00 27-Aug-24 17:00 1.42 Days
Continuous		 1164L (816s Petrolia - EP Riverview), 816s P2404 (816s Petrolia), 816s P2403 (816s Petrolia) Petrolia: P2404 Breaker LCR Commissioning (PDS12 Op Checks)  
EPCOR 26-Aug-24 07:00 30-Aug-24 17:00 4.42 Days
Continuous		 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar), 987s C2401 (987s Clover Bar), 987s C2403 (987s Clover Bar), 987s CDS18 (987s Cloverbar) PT retest and C2401 dashpot repair  
EPCOR 26-Aug-24 07:00 31-Aug-24 17:00 5.42 Days
Continuous		 T4 (Poundmaker), PM2403 (Poundmaker), PM2402 (Poundmaker), PM721 (Poundmaker) Poundmaker: (TX4 Zone) PM2402, PM2403 Breaker Maintenance and BUS 3 CVT Doble and PMAB4, PMDS4, PMDS5 Disconnect Maintenance  
ATCO 26-Aug-24 08:00 20-Sep-24 17:30 25.4 Days
Continuous		 840s McNeill Station, 840s 701T (840s McNeill Station), 840s 901T (840s McNeill Station), 840s 901 (840s McNeill Station), 840s 701 (840s McNeill Station), 840s 702C (840s McNeill Station), 840s 703C (840s McNeill Station) Transformer 701T and 901T Bushing replacements and post replacement testing HMI Server 1 replacement and commissioning. Annual maintenance AB-SK
ATCO 26-Aug-24 08:30 27-Aug-24 16:00 31.5 Hours
Continuous		 7L91 (715s Leming Lake - 826s Marguerite Lake), 715s 702 (715s Leming Lake) breaker maintenance  
ALTALINK 26-Aug-24 12:00 26-Aug-24 16:00 4 Hours
Daily		 180L (15s Fort Macleod - 180AL tap) Commission 15s180N status LTO to new AIS relays  
ALTALINK 26-Aug-24 12:30 28-Aug-24 17:30 2.21 Days
Continuous		 28s 5 (28s West Brooks) PRC5 First Trip followed by maintenance.  
ALTALINK 27-Aug-24 08:30 28-Aug-24 16:30 1.33 Days
Continuous		 562s 1052 (562s Cypress) 562s1052 – PRC5 First Trip / breaker maintenance / PRC5  
ATCO 27-Aug-24 09:30 28-Aug-24 17:30 1.33 Days
Continuous		 7L51 (788s Hotchkiss - 927s Buchanan Creek), ATC 793s 701 (ATC 793s West Peace River) 793S 701 BREAKER SF6 HPL COMPLETE TESTING
793S 701 BREAKER SF6 HPL PARTIAL TESTING
Replace Densimeters on Breaker 701 at 793s West Peace		  
ATCO 27-Aug-24 10:00 29-Aug-24 16:00 2.25 Days
Continuous		 925s 901T (925s Green Stocking) transformer tapchanger maintenance  
ALTALINK 27-Aug-24 12:30 27-Aug-24 16:30 4 Hours
Daily		 880L (321s Al Rothbauer - 523s Bullshead) Install and commission new circuits and 1052 trip testing pertaining to the Winnifred Wind Project.  
ALTALINK 27-Aug-24 12:30 27-Aug-24 17:00 4.5 Hours
Daily		 463L (15s Fort Macleod - 463AL tap) Commission 15s463 status LTO to new AIS relays  
ALTALINK 27-Aug-24 23:00 29-Aug-24 07:00 1.33 Days
Continuous		 250p 22 (250p Bighorn Plant) maintenance  
ALTALINK 28-Aug-24 07:00 29-Aug-24 07:00 24 Hours
Continuous		 250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 28-Aug-24 07:00 29-Aug-24 07:00 24 Hours
Continuous		 718L (250p Bighorn Plant - 263s Strachan) to be added once the outage request is submitted.  
ATCO 28-Aug-24 08:30 29-Aug-24 16:00 31.5 Hours
Continuous		 7L66 (715s Leming Lake - 717s Ethel Lake), 715s 703 (715s Leming Lake) breaker maintenance  
ALTALINK 29-Aug-24 07:00 29-Aug-24 18:00 11 Hours
Daily		 725L (15s Fort MacLeod - 725BL tap), 725L (674s Bowron - 725BL tap), 725BL (240s McBride Lake - 725L tap) Replace arms and insulators at structure 231. Install ground rod and repair downlead at structure 223.  
ATCO 29-Aug-24 08:00 29-Aug-24 16:00 8 Hours
Continuous		 7L85 (804s Wintering Hills - 7LA85 tap) Insulator replace structures 497, 532, 533.
Clearance Mitigation Structures 532, 490.		  
ATCO 29-Aug-24 09:30 30-Aug-24 17:30 1.33 Days
Continuous		 7L82 (788s Hotchkiss - 855s Hamburg) BREAKER SF6 HPL PARTIAL TESTING - 705 at 788s HOTCHKISS  
ATCO 30-Aug-24 08:00 30-Aug-24 14:00 6 Hours
Continuous		 7L85 (804s Wintering Hills - 7LA85 tap) Clearance Mitigation Pole change structure 7L85-383.
Add conductor weights 7L85-382
Change Insulators 7L85-432.		  
ATCO 01-Sep-24 10:00 02-Sep-24 16:00 30 Hours
Continuous		 9L16 (755s Cordel - 972s Tinchebray) Capital Power request  
SUNCOR 02-Sep-24 08:00 09-Sep-24 16:00 7.33 Days
Continuous		 29EDD-1 29EDD1s1252 (29EDD-1 Millennium) BP - 29EDD1;29CVT-2 SYSTEM;PM 5y,10y; 29EDD1S252 Breaker
  
EPCOR, ALTALINK 03-Sep-24 07:00 07-Sep-24 17:00 4.42 Days
Continuous		 EP 803s T3 (EP 803s Lambton), EP 803s L2403 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton) Lambton: LDS10 LCR and L2405 P&C Maintenance  
EPCOR 03-Sep-24 07:00 13-Sep-24 17:00 10.42 Days
Continuous		 816s P2404 (816s Petrolia), 816s P2405 (816s Petrolia), 816s T2 (816s Petrolia) Petrolia: P2405 Breaker LCR and TX2 Zone Doble and Disconnect Maintenance (042066)  
ALTALINK 03-Sep-24 07:30 12-Sep-24 16:30 9.38 Days
Continuous		 37s 82 (37s North Calder) Remove old breaker. New foundation screw piles, install new breaker, re-wire and install risers  
ATCO, ALBIAN 03-Sep-24 08:00 04-Sep-24 08:00 24 Hours
Continuous		 919s 906 (919s Hartley) open 906 breaker and 901TD in the Hartley 919S substation for CNRL Albian Sands  
ALTALINK, TRANSALTA 03-Sep-24 08:00 06-Sep-24 17:00 3.38 Days
Daily		 33s T1 (33s Spray) maintenance  
ALTALINK, TRANSALTA 03-Sep-24 08:00 06-Sep-24 17:00 3.38 Days
Daily		 33s T2 (33s Spray) maintenance  
SUNCOR 03-Sep-24 08:00 19-Sep-24 16:00 16.33 Days
Continuous		 29EDD-1 T1 (29EDD-1 Millennium) BP - 29EDD-1 T1 Bushings; 72kv Arresters Replacement; 29EDD1S1052 Densimeter Replacement; 29EDD1S852 Replace Densimeter; OLTC Maintenance and Testing  
ATCO, ALTALINK 03-Sep-24 08:30 05-Sep-24 17:30 2.38 Days
Continuous		 825s 901 (825s Whitefish Lake), 9L960 (13s Deerland - 825s Whitefish Lake), 825s 902 (825s Whitefish Lake) 901 PRC Trip Coil Testing
901 NISSIN CT Testing/Inspection
902 PRC Trip Coil Testing
902 NISSIN CT Testing/Inspection
RTXP replacement		  
BCH 03-Sep-24 09:00 13-Sep-24 17:00 10.33 Days
Continuous		 5L91 (BCH Ashton Creek - BCH Selkirk) replace insulators & marker balls BC maintenance does not affect the Alberta ATC AB-BC
ATCO 03-Sep-24 10:00 05-Sep-24 16:00 2.25 Days
Continuous		 925s 902T (925s Green Stocking) transformer tapchanger maintenance  
ALTALINK 03-Sep-24 12:30 04-Sep-24 16:30 28 Hours
Continuous		 428s 733X (428s Namaka), 733L (179s Gleichen - 428s Namaka) PRC5 First Trip followed by maintenance.  
ALTALINK 03-Sep-24 12:30 05-Sep-24 16:30 2.17 Days
Continuous		 205s 152 (205s Castle Rock Ridge) 205s152 – PRC5 First Trip / breaker maintenance / PRC5  
ALTALINK 03-Sep-24 14:00 05-Sep-24 17:00 2.13 Days
Continuous		 367s T2 (367S Harry Smith) PRC005 Doble, maintenance, leaks  
SUNCOR 04-Sep-24 00:00 11-Sep-24 00:00 7 Days
Continuous		 29EDD-71 29PT-237 (29EDD-71) FB - 29PT-244 MVT MAINTENANCE PM 5y (WO: 450236578)  
ALTALINK, EPCOR 04-Sep-24 07:00 04-Sep-24 18:00 11 Hours
Daily		 915L (38s East Edmonton - 987s Clover Bar) Cutover new alarms, controls, and statuses to new SCADA system.  
ALTALINK 04-Sep-24 07:30 04-Sep-24 17:30 10 Hours
Continuous		 349s T1 (349s Stavely) Commission new LTO status to new AIS relays . Update and test new settings for tx prot  
BCH 04-Sep-24 09:00 06-Sep-24 17:00 2.33 Days
Continuous		 5L91 (BCH Ashton Creek - BCH Selkirk), 5D44 (BCH Ashton Creek) 5D44, 5D1CB4, 5D2CB3 disconnects inspection BC maintenance does not affect the Alberta ATC AB-BC
ALTALINK 05-Sep-24 07:30 05-Sep-24 17:00 9.5 Hours
Daily		 102s 552 (102s Langdon) 240kV breaker maintenance  
ATCO 05-Sep-24 08:00 10-Sep-24 12:00 5.17 Days
Continuous		 7L224 (650s Hansman Lake - 774s Monitor) Pole change under TCM L-L mitigation project 1102671  
ALTALINK 05-Sep-24 08:00 10-Sep-24 12:00 5.17 Days
Continuous		 650s 224 (650s Hansman Lake) Pole change under TCM L-L mitigation project 1102671  
ALTALINK 05-Sep-24 08:30 05-Sep-24 17:30 9 Hours
Daily		 102s 6452 (102s Langdon) 240kV breaker maintenance  
ATCO 07-Sep-24 14:00 11-Sep-24 16:00 4.08 Days
Continuous		 9L43 (874s McKay River - 888s Dover) TC Energy requesting 9L43 OOS for 4 year maintenance interval
  
ALTALINK 08-Sep-24 07:00 08-Sep-24 12:30 5.5 Hours
Daily		 38s T4 (38s East Edmonton), 38s 240kV Bus 2 (38s East Edmonton) Cutover new alarms, controls, and statuses to new SCADA system.  
ALTALINK 08-Sep-24 11:30 12-Sep-24 17:30 4.25 Days
Continuous		 254s T1 (254s Coaldale) Maint. and bushing replacement  
ALTALINK 08-Sep-24 12:30 08-Sep-24 17:30 5 Hours
Daily		 38s T1 (38s East Edmonton), 38s 240kV Bus 1 (38s East Edmonton) Cutover new alarms, controls, and statuses to new SCADA system.  
EPCOR 09-Sep-24 07:00 21-Sep-24 17:00 12.42 Days
Continuous		 CV5 (EP 511s Victoria - 557s Castle Downs), EP 511s Victoria T5 (EP 511s Victoria), EP 511s V2401 (EP 511s Victoria), 557s CD2405 (557s Castle Downs), 557s CD2406 (557s Castle Downs) CV5: Manhole Inspections and Victoria TX5 Zone Doble, VDS25, CDDS16, CDDS11, CDDS10 Disconnect Maintenance and CD2405 P&C Maintenance  
ATCO 09-Sep-24 08:00 12-Sep-24 16:00 3.33 Days
Continuous		 7L69 (731s Elmworth - 815s Goodfare) Changing rotten poles  
ATCO, ALTALINK 09-Sep-24 08:30 13-Sep-24 17:30 4.38 Days
Continuous		 9L961 (13s Deerland - 825s Whitefish Lake), 825s 903 (825s Whitefish Lake), 825s 904 (825s Whitefish Lake) 903 PRC Trip Coil Testing
904 PRC Trip Coil Testing
903 NISSIN CT Testing/Inspection
9L961 PRC Aux. testing
RTXP Replacement		  
ALTALINK 09-Sep-24 09:00 11-Sep-24 18:00 2.38 Days
Continuous		 326s 240kV Bus 2 (326s Murray lake), 326s 452 (326s Murray Lake) install 240kV SS1 station service transformer  
ATCO 09-Sep-24 10:00 12-Sep-24 17:00 3.29 Days
Continuous		 806s 701T (806s Oldman River) 701 for testing  
ALTALINK 09-Sep-24 12:30 13-Sep-24 15:30 4.13 Days
Continuous		 370s T5 (370s North Lethbridge) 370sT5 Maintenance 370s2252 Maint.  
ALTALINK 10-Sep-24 07:00 10-Sep-24 18:00 11 Hours
Daily		 908L (38s East Edmonton - 908AL tap), 908L (89s Ellerslie - 908AL tap) Cutover new alarms, controls, and statuses to new SCADA system.  
ALTALINK 10-Sep-24 07:00 22-Sep-24 18:00 12.46 Days
Continuous		 880L (321s Al Rothbauer - 523s Bullshead) Stringing new circuit above 880L between Structures #77 - 89  
ATCO 10-Sep-24 09:30 12-Sep-24 17:30 2.33 Days
Continuous		 834s 909R (834s Wesley Creek) PRC-005 - SPR TESTING - REACTOR 909R @ 834S
PRC-005 - TRIP COIL TESTING - BREAKER 909 @ 834S
BREAKER SF6 HPL COMPLETE TESTING - 909 @ 834S
2023 Apparatus Leak Repairs Program - 909R at 834S Wesley Creek		  
ATCO 10-Sep-24 10:00 12-Sep-24 16:00 2.25 Days
Continuous		 7L63 (780s Lubicon - 812s Norcen), 780s 701 (780s Lubicon), 780s 702 (780s Lubicon) RTXP test switch replacements 21A and 21B/ 7L63  
ALTALINK 11-Sep-24 07:00 11-Sep-24 18:00 11 Hours
Daily		 946L (38s East Edmonton - 89s Ellerslie) Cutover new alarms, controls, and statuses to new SCADA system.  
ATCO 11-Sep-24 09:30 12-Sep-24 17:30 1.33 Days
Continuous		 7L54 (794s Valleyview - 813s Little Smoky), 794s 704 (794s Valleyview) BREAKER SF6 LTB145D1/B COMPLETE TESTING - 704 at 794s  
ALTALINK 11-Sep-24 23:00 12-Sep-24 03:00 4 Hours
Daily		 62s 12 (62s Brazeau Plant) maintenance  
ATCO 12-Sep-24 09:00 21-Sep-24 17:00 9.33 Days
Continuous		 7L29 (791s Rainbow Lake - 850s Rainbow Co-Gen), 791s 705 (791s Rainbow Lake), 850s 701T (850s Rainbow Cogen), 850s 702T (850s Rainbow Cogen) 7L29 protection upgrade @ 791S and 850S. SCADA system upgrade @ 791S and 850S.  
EPCOR 13-Sep-24 07:00 04-Oct-24 17:00 21.42 Days
Continuous		 816s P2405 (816s Petrolia) Petrolia: P2405 Breaker LCR  
ATCO 13-Sep-24 10:00 13-Sep-24 16:00 6 Hours
Continuous		 951s 920C (951s Thickwood), 951s 920 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
ENMAX 16-Sep-24 08:00 04-Oct-24 16:00 18.33 Days
Continuous		 65.1TR (SS-65) Transformer Power Factor Test - 65.1TR. Tap Changer Inspection - 65.1-TC  
ATCO 16-Sep-24 09:00 17-Sep-24 17:30 1.35 Days
Continuous		 826s 908 (826s Marguerite Lake) Nissin CT inspection and Testing.  
BCH 16-Sep-24 09:00 20-Sep-24 17:00 4.33 Days
Continuous		 5L98 (BCH Nicola - BCH Vaseux Lake) replace insulators & marker balls BC maintenance does not affect the Alberta ATC AB-BC
ATCO 16-Sep-24 10:00 20-Sep-24 16:00 4.25 Days
Continuous		 732s 902T (732s Mitsue), 732s 503R (732s Mitsue), 732s Protection & Control (732s Mitsue) PRC-005 - SPR TESTING - TRANSFORMER 902T @ 732S, PRC-005 - TRIP COIL TESTING - BREAKER 503 @ 732S
TCM Program. RTXP Test Switch Mitigation and Replacement: 87T-A/902T, 87T-B/902T, 50-51TV-59/902T 		 
ALTALINK 16-Sep-24 12:30 19-Sep-24 16:30 3.17 Days
Continuous		 64s T2 (64s East Crossfield), 64s 138kV Bus1 (64s East Crossfield) 64sT2 Maint, PRC5 checks, and repair 64s33  
ALTALINK 16-Sep-24 12:30 21-Sep-24 17:30 5.21 Days
Continuous		 368s T2 (368s Burdett) Maint. and bushing replacement  
ALTALINK 17-Sep-24 07:00 18-Sep-24 18:00 1.46 Days
Continuous		 1042L (485s Blackspring Ridge - 554s Travers) Arctic Arrow requires a GOI on 1042L Urgent repair. The project has 13 notifications. 12 notifications consisting of retying overheads and 1 notification of tightening hardware between structures 3-62 at various locations.  
ALTALINK 17-Sep-24 08:00 17-Sep-24 17:00 9 Hours
Daily		 100L (498s Tilley - 895s Suffield) Repair OHSW bond at structure 180.  
ALTALINK 18-Sep-24 08:00 18-Sep-24 17:00 9 Hours
Daily		 763L (158s Vauxhall - 257s Hull) Repair conductor damage at structure 491.  
ALTALINK 18-Sep-24 18:00 21-Sep-24 17:00 2.96 Days
Continuous		 1042L (485s Blackspring Ridge - 554s Travers) Customer performing maintenance on their XXXXX Equipment  
ALTALINK 19-Sep-24 07:00 23-Sep-24 18:30 4.48 Days
Continuous		 944L (132s Ware Junction - 275s Jenner) Replace VT5 and CT (275s5), install new JB and cabling, like for like replacement.  
ALTALINK 19-Sep-24 08:00 19-Sep-24 17:00 9 Hours
Daily		 880L (321s Al Rothbauer - 523s Bullshead) Re-tie OHSW at structure 8.  
ATCO 19-Sep-24 10:00 19-Sep-24 16:00 6 Hours
Continuous		 951s 908 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
SUNCOR 20-Sep-24 09:00 28-Sep-24 16:00 8.29 Days
Continuous		 29EDD-1 T2 (29EDD-1 Millennium) BP-29EDD-1 - TA - T2 OLTC Maintenance and Testing; 29EDD-1 T2 72LV Arrester replacement (CG)  
EPCOR 21-Sep-24 07:00 21-Sep-24 17:00 10 Hours
Continuous		 EP 511s V727 (EP 511s Victoria), EP 511s V728 (EP 511s Victoria), EP 511s Victoria T5 (EP 511s Victoria), CV5 (EP 511s Victoria - 557s Castle Downs) Victoria: VDS19 Repair (044875)  
EPCOR 22-Sep-24 07:00 27-Sep-24 17:00 5.42 Days
Continuous		 1164L (816s Petrolia - EP Riverview), RW2401 (EP Riverview), RW2402 (EP Riverview) 1164L: Apparatus Riverview- 1164L Arrestor/CVT Doble, RWDS2/RWDS3/RWDS11 Disconnect Maintenance, Aerial- 1164L Insulator replacement  
EPCOR 23-Sep-24 07:00 23-Sep-24 17:00 10 Hours
Continuous		 PM2401 (Poundmaker) Poundmaker: PM2401 Breaker Maintenance  
ALTALINK 23-Sep-24 07:00 29-Sep-24 17:00 6.42 Days
Continuous		 850L (525s Carseland - 678s Okotoks) Arctic arrow will require a GOI on 850L to fix the steel core on 1201L 30-44. Once work in the span of 30-44 is completed the crew will return the GOI on 850L. 1201L crosses over 850L at 1201L31-32 span.  
ALTALINK 23-Sep-24 07:15 27-Sep-24 17:45 4.44 Days
Continuous		 919L (77s Sagitawah - 310p Sundance) Clearance issue at 77s, re: 77s14 breaker replacement  
ALTALINK, BHE Canada 23-Sep-24 08:00 23-Sep-24 17:30 9.5 Hours
Daily		 120s 27 (120s Picture Butte) 120s MATL: Maintenance on 240kV breakers, Maintenance on 240kV CVTs, Maintenance on PS1, Maintenance on Protective relays (RET)  
ALTALINK 23-Sep-24 08:00 02-Oct-24 17:00 9.38 Days
Continuous		 77s 14 (77s Sagitawah) new breaker and foundation install  
ALTALINK 23-Sep-24 08:00 04-Oct-24 18:00 11.42 Days
Continuous		 1201L (520s Bennett - BCH Cranbrook) Maintenance tasks str range 18-513.  
ALTALINK 23-Sep-24 08:00 04-Oct-24 18:00 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
ALTALINK 23-Sep-24 08:00 04-Oct-24 18:00 11.42 Days
Daily		 786L (799s Coleman - BCH Natal), 799s 786W (799s Coleman) 887L required to be open due to 1201L as per AESO Rule AB-BC
BHE Canada 23-Sep-24 09:00 04-Oct-24 17:00 11.33 Days
Continuous		 MATL (120s Picture Butte - Montana) align with 1201L outage AB-MATL
AESO 23-Sep-24 09:00 04-Oct-24 17:00 11.33 Days
Continuous		 Path 1 (AIES Islanding) 5L94 replace insulators & spacers AB-BC
ALTALINK 23-Sep-24 12:00 26-Sep-24 18:00 3.25 Days
Continuous		 310p T30 (310p Sundance) 310p T30 25kV Bushing replacement, 69kV Bushing replacement, 69kV LA install, leak repair, maintenance, doble. RSLD 1 to be implemented at the end of the outage.  
ALTALINK 23-Sep-24 13:30 26-Sep-24 17:30 3.17 Days
Continuous		 310p 2452 (310p Sundance) Breaker maint. + First Trip on 310p2452  
ALTALINK 23-Sep-24 14:00 03-Oct-24 16:00 10.08 Days
Continuous		 520s R7 (520s Bennett) R7 Maintenance  
ALTALINK 23-Sep-24 23:00 06-Nov-24 16:00 43.75 Days
Continuous		 62s 11 (62s Brazeau Plant) Major maintenance  
EPCOR 24-Sep-24 07:00 24-Sep-24 17:00 10 Hours
Continuous		 PM2404 (Poundmaker) Poundmaker: PM2404 Breaker Maintenance  
EPCOR 24-Sep-24 07:00 11-Oct-24 17:00 17.42 Days
Continuous		 240BA3 (629s Argyll Transfer Station - 814s Bellamy) 240BA3: Oil Degassing UGT  
SUNCOR 24-Sep-24 08:00 08-Oct-24 16:00 14.33 Days
Continuous		 29PL6-22 (29EDD-1 Millennium - 29EDD-2 Tar Island), 29EDD-2 29PT-3 (29EDD-2 Tar Island), 29EDD-1 29EDD1s1352 (29EDD-1 Millennium), 29EDD-1 29EDD1S1452 (29EDD-1 Millennium), 29EDD-1 29PS-0146 (29EDD-1 Millennium), 29EDD-2 29PS-6 (29EDD-2 Tar Island) BP - 29EDD1,29CVT-7 system, PM 5 year,10 year, bus, test breaker 29EDD1S1352
  
ALTALINK 24-Sep-24 08:30 25-Sep-24 17:30 1.38 Days
Daily		 520s T1 (520s Bennett), 520s 552 (520s Bennett) 520sT1, 552 Maintenance..  
ALTALINK 24-Sep-24 08:30 26-Sep-24 17:30 2.38 Days
Continuous		 48s 887X (48s Pocaterra), 887L (48s Pocaterra - 978s BCH Britt Creek) 48s887X maintenance  
ALTALINK 25-Sep-24 06:15 26-Sep-24 17:45 1.48 Days
Continuous		 910L (288s Wolf Creek - 289s Saunders Lake) conductor inspections between structures 108-111  
SUNCOR 25-Sep-24 08:00 28-Sep-24 18:00 3.42 Days
Continuous		 29EDD-65 29-952-4812 (29EDD-65) FB-29EDD65;29-952-4812 MAIN & TEST;PM 5y (46555391)  
ATCO 26-Sep-24 10:00 26-Sep-24 16:00 6 Hours
Continuous		 951S 902 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
ALTALINK 27-Sep-24 06:15 03-Oct-24 17:45 6.48 Days
Continuous		 914L (86s Bigstone - 87s Gaetz) conductor inspections on various spans between 173-216  
BCH 30-Sep-24 08:00 04-Oct-24 16:00 4.33 Days
Continuous		 5L94 (BCH Cranbrook - 102s Langdon), 1L275 (799s Coleman - BCH Natal), 1L274 (48s Pocaterra - 978s BCH Britt Creek) 5L94 replace insulators & spacers AB-BC
ATCO 30-Sep-24 08:30 03-Oct-24 17:30 3.38 Days
Continuous		 825s 903 (825s Whitefish Lake) 903 PRC Trip Coil Testing
903 NISSIN CT Testing/Inspection		  
ATCO 30-Sep-24 10:00 07-Oct-24 17:00 7.29 Days
Continuous		 7L62 (797s Kemp River - 905s Meikle) Connect new DFR to 7L62PTY1, 7L62/21A, 21B and commission
Migrate SCADA alarms, control, analogs from the existing RTU to the new Station Controller, end-to-end commissioning		  
SUNCOR 01-Oct-24 00:00 31-Oct-24 00:00 30 Days
Continuous		 29EDD-71 29PT-336 (29EDD-71) FB-29PT-336, 30PP-125 6Y, 29PT-517 5Y (450236820, 300184327, 450260042, 450241892)  
ALTALINK 01-Oct-24 07:00 01-Oct-24 11:00 4 Hours
Daily		 523s 880 (523s Bullshead), 880L (321s Al Rothbauer - 523s Bullshead) Test Trip from new T1 ‘A’ and T1 ‘B’ protection relays  
ALTALINK, EPCOR 01-Oct-24 07:00 02-Oct-24 17:00 1.42 Days
Continuous		 1044L (EP 805s Jasper - 816s Petrolia), 816s P2405 (816s Petrolia), 816s P2406 (816s Petrolia) Petrolia: P2405 Breaker LCR Commissioning (PDS14 Op Checks)  
ALTALINK 01-Oct-24 07:00 03-Oct-24 18:00 2.46 Days
Continuous		 727L52N (727AL tap), 727L52S (727AL tap), 727A1L (303s Saddlebrook - 727L tap), 727AL (142s Magcan - 727L tap) Replace Dead-end insulators at structures 7 & 20. Replace crossarms and insulators at structure 11.  
EPCOR 01-Oct-24 07:00 11-Oct-24 17:00 10.42 Days
Continuous		 987s T3 (987s Clover Bar), 987s C2407 (987s Clover Bar) Cloverbar TX3 DGA Install  
ALTALINK 01-Oct-24 07:30 10-Oct-24 16:30 9.38 Days
Continuous		 37s 81 (37s North Calder) Remove old breaker. New foundation screw piles, install new breaker. Wire and install risers  
BCH 01-Oct-24 08:00 01-Oct-24 16:00 8 Hours
Continuous		 5L94 (BCH Cranbrook - 102s Langdon), 1L274 (48s Pocaterra - 978s BCH Britt Creek), 1L275 (799s Coleman - BCH Natal) CBK 5RX5 / CBK 5B5 / 5L94 - 5CVT5 Inspection AB-BC
ATCO 01-Oct-24 08:00 02-Oct-24 16:30 1.35 Days
Continuous		 848s 910 (848s Ruth Lake), 848s 911 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
Cutover 910CT, 911CT, and 910PT inputs will be cutover to new DFR and commissioned.		  
BCH 01-Oct-24 09:00 11-Oct-24 17:00 10.33 Days
Continuous		 T3 (BCH Natal) NTL station rebuild. T3 OOS for PN replacement AB-BC
ALTALINK 01-Oct-24 12:30 03-Oct-24 16:30 2.17 Days
Daily		 59s 352 (59s Peigan) Maint. and gauge replacement  
ALTALINK 02-Oct-24 07:00 02-Oct-24 10:30 3.5 Hours
Daily		 523s 676 (523s Bullshead), 676L (244s Bowmanton - 523s Bullshead) Test Trip from new T1 ‘A’ and T1 ‘B’ protection relays  
ATCO 02-Oct-24 10:00 02-Oct-24 16:00 6 Hours
Continuous		 951s 906 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
EPCOR 03-Oct-24 07:00 04-Oct-24 17:00 1.42 Days
Continuous		 816s T2 (816s Petrolia), 816s P2404 (816s Petrolia), 816s P2405 (816s Petrolia) Petrolia: P2405 Breaker LCR Commissioning (PAB2 Op Checks)  
ATCO 03-Oct-24 08:00 04-Oct-24 16:30 1.35 Days
Continuous		 9L01 (848s Ruth Lake - 951s Thickwood Hills), 848s 911 (848s Ruth Lake), 848s 913 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
Cutover 911CT, 913CT and 913PT inputs will be cutover to new DFR and commissioned.		  
ALTALINK 04-Oct-24 08:00 06-Oct-24 17:00 2.38 Days
Continuous		 607L (135s Conrad - 607AL tap) Replace x-brace at structure 213. Install Post insulators on structure 222. Replace structure 242.  
ALTALINK, EPCOR 04-Oct-24 10:00 07-Oct-24 11:30 3.06 Days
Continuous		 320p 138kV Bus (320p Keephills), 834L (320p Keephills - 384s Keystone), 767L (320p Keephills - 767AL tap), 809L (320p Keephills - 510s Sunnybrook), 320p T1 (320p Keephills) Replace 320p92.  
ATCO, SUNCOR 05-Oct-24 08:00 06-Oct-24 16:30 1.35 Days
Continuous		 29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake), 848s 901 (848s Ruth Lake), 848s 902 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
901 and 902 breaker statuses, 901CT, 902CT and 901PT inputs will be cutover to new DFR and commissioned.		  
EPCOR 07-Oct-24 07:00 11-Oct-24 17:00 4.42 Days
Continuous		 EP 803s T3 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton) Lambton: L721 Bay PT LCR  
ALTALINK 07-Oct-24 07:00 16-Oct-24 17:00 9.42 Days
Continuous		 1325L (510s Sunnybrook - AML 511s Crossings) WATL Annual Link Outage, DC Yard maintenance, Valve Hall Grading Electrode Inspections, VCS work, 511s5957 Ground Switch Repairs  
EPCOR 07-Oct-24 07:00 08-Nov-24 17:00 32.46 Days
Continuous		 816s P2402 (816s Petrolia) Petrolia: P2402 Breaker LCR  
ENMAX 07-Oct-24 08:00 25-Oct-24 16:00 18.33 Days
Continuous		 65.2TR (SS-65) Transformer Power Factor Test - 65.2TR. Tap Changer Inspection - 65.2-TC  
BCH 07-Oct-24 09:00 07-Oct-24 17:00 8 Hours
Continuous		 2L293 (BCH Nelway - BCH Selkirk) NLY 2D22 disconnect maintenance BC maintenance does not affect the Alberta ATC

AB-BC
ATCO 07-Oct-24 09:00 16-Oct-24 18:00 9.38 Days
Continuous		 7L20 (740s H.R. Milner - 810s Dome Cutbank) Changing several structures on 7L20 between 740S HR Milner and 810S Dome Cutbank, from STR 306-58 on 7L20.  
BCH 07-Oct-24 09:00 01-Nov-24 17:00 25.33 Days
Continuous		 2L293 (BCH Nelway - BCH Selkirk) 2L293 replace structure & crossarms BC maintenance does not affect the Alberta ATC AB-BC
ATCO 07-Oct-24 10:00 21-Oct-24 12:00 14.08 Days
Continuous		 741s 701T (741s Fox Creek), 741s 701 (741s ATC Fox Creek), 741s 702 (741s ATC Fox Creek), 741s 702T (741s Fox Creek), 741s 703 (741s ATC Fox Creek), 741s 704 (741s ATC Fox Creek), 741s 705C (741s Fox Creek), 741s 705 (741s ATC Fox Creek), 7L90 (741s ATC Fox Creek - 7LA90 tap), 7L199 (347s AML Fox Creek - 741s ATC Fox Creek) Relocate 700PT1 connections to the east side of the PT structure & create a J1 on the west side of the PT structure.  
ATCO 07-Oct-24 10:00 28-Oct-24 17:00 21.29 Days
Continuous		 9L100 (801s Anderson - 807s Sheerness) Replace Breaker 902 @ 807S Sheerness, complete line 21A, 21B/9L100 protection upgrade and Commissioning  
ALTALINK 07-Oct-24 13:00 10-Oct-24 17:30 3.19 Days
Continuous		 89s 352 (89s Ellerslie) Breaker maint. + First Trip, replace leaking grading capacitor  
ATCO 08-Oct-24 08:30 09-Oct-24 16:00 31.5 Hours
Continuous		 7L28 (717s Ethel Lake - 846s Grand Centre) breaker maintenance  
ATCO 09-Oct-24 07:00 09-Oct-24 19:00 12 Hours
Continuous		 7L696 (508s Lakesend - 892s Ribstone Creek) install interphase spacers  
ALTALINK 10-Oct-24 07:30 11-Oct-24 16:30 1.38 Days
Continuous		 AML 511s T30 (AML 511s Crossings), AML 511s SVC Plus (AML 511s Crossings) ACF14 and SVC+ Inspection & Maintenance.  
ATCO 10-Oct-24 08:30 11-Oct-24 16:00 31.5 Hours
Continuous		 7L24 (846s Grand Centre - 7LA24 tap), 846s 702 (846s Grand Centre) breaker maintenance  
ATCO 10-Oct-24 08:30 11-Oct-24 16:00 31.5 Hours
Continuous		 7L583 (715s Leming Lake - 970s Bourque), 715s 701 (715s Leming Lake) breaker maintenance  
ATCO 10-Oct-24 10:00 10-Oct-24 16:00 6 Hours
Continuous		 951s 905 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
ALTALINK 11-Oct-24 08:00 12-Oct-24 17:00 1.38 Days
Continuous		 507L (83s Taber - 257s Hull) replace OHSW assembly at structures 3 & 4, replace structure 22  
ALTALINK 14-Oct-24 09:30 14-Oct-24 15:30 6 Hours
Daily		 853L (28s West Brooks - 853AL tap) Commission 853L LTO to new AIS relays and install new 43Ms on 28s25 and 28s28  
ATCO 14-Oct-24 10:00 17-Oct-24 16:30 3.27 Days
Continuous		 7L50 (757s Battle River - 491L tap) Structure, cross arm and insulator replacement on 7L50 between battle river and Jarrow.  
ALTALINK, Lethbridge 15-Oct-24 07:00 15-Oct-24 14:00 7 Hours
Daily		 172L (181s Chinook - 370s North Lethbridge) Test LTO to new AIS relay.  
ALTALINK 15-Oct-24 07:00 16-Oct-24 18:30 1.48 Days
Continuous		 275s 240kV Bus 2 (275s Jenner), 275s T2 (275s Jenner) Replace 275s22 CVT8, replace JB and wire, like for like replacement  
ALTALINK 15-Oct-24 07:15 24-Oct-24 16:45 9.4 Days
Continuous		 37s 76 (37s North Calder), 37s 82 (37s North Calder), 905L (19s Wabamun - 37s North Calder) Remove old breaker (37s76) and CTs. New foundation screw piles, install new breaker, wire and install risers,,, install new string insulators on 905L  
ALTALINK 16-Oct-24 07:00 16-Oct-24 18:00 11 Hours
Daily		 913L (69s North Barrhead - 732s Mitsue) Replace Insulators at structure 150.  
ALTALINK 16-Oct-24 07:00 16-Oct-24 18:00 11 Hours
Daily		 463AL (492s Monarch - 463L tap), 463L (15s Fort Macleod - 463AL tap), 492s T1 (492s Monarch) Hardware tighten structures 48 & 49. Repair downlead at structures 32 & 36.  
ATCO 16-Oct-24 08:00 17-Oct-24 16:30 1.35 Days
Continuous		 848s 902 (848s Ruth Lake), 848s 907 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
902CT, 907CT and 902PT inputs will be cutover to new DFR and commissioned.		  
ATCO 16-Oct-24 09:00 28-Oct-24 17:00 12.33 Days
Continuous		 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap), 791s 702 (791s Rainbow Lake) 7L81 upgrade @ 791S.
Scada system upgrade @ 791S		  
ALTALINK 16-Oct-24 10:00 16-Oct-24 14:00 4 Hours
Daily		 250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 17-Oct-24 07:00 18-Oct-24 18:00 1.46 Days
Continuous		 765L (151s Strathmore - 419s Chestermere) Perform maintenance work on structures 63, 64, 65, 290, 292 and 293.  
ALTALINK, Lethbridge 17-Oct-24 08:00 19-Oct-24 17:00 2.38 Days
Continuous		 207L (111s Coalbanks - 370s North Lethbridge) Install post insulators on structure 6. Hardware tighten structure 8. Replace structure at structure 11.  
ALTALINK 17-Oct-24 09:00 17-Oct-24 15:00 6 Hours
Daily		 1202L (89s Ellerslie - 320p Keephills), 320p 3152 (320p Keephills), 320p 3052 (320p Keephills) connect Summated 1202L CT from 320p3152 & 320p3052 to new PMU  
ALTALINK 17-Oct-24 10:00 17-Oct-24 14:00 4 Hours
Daily		 250p 22 (250p Bighorn Plant) maintenance  
ATCO 18-Oct-24 08:00 19-Oct-24 16:30 1.35 Days
Continuous		 9L58 (848s Ruth Lake - 888s Dover), 848s 907 (848s Ruth Lake), 848s 908 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
Cutover 907CT, 908CT, and 908PT inputs will be cutover to new DFR and commissioned.		  
ALTALINK, EPCOR 18-Oct-24 09:00 18-Oct-24 15:00 6 Hours
Daily		 1203L (320p Keephills - 510s Sunnybrook), 320p 3452 (320p Keephills), 320p 2952 (320p Keephills) connect Summated 1203L CT from 320p3452 & 320p2952 to new PMU  
ALTALINK 19-Oct-24 07:00 19-Oct-24 18:00 11 Hours
Daily		 786L (799s Coleman - BCH Natal) Repair woodpecker damage on structures 97 & 109. Hardware tighten structure 108.  
ALTALINK 20-Oct-24 07:00 20-Oct-24 18:00 11 Hours
Daily		 944L (132s Ware Junction - 275s Jenner) Re-tie OHSW at Structure #944L199  
ATCO 20-Oct-24 08:00 21-Oct-24 16:30 1.35 Days
Continuous		 9L23 (848s Ruth Lake - 977s Salt Creek), 848s 905 (848s Ruth Lake), 848s 906 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
905CT, 906CT and 905PT inputs will be cutover to new DFR and commissioned.		  
ALTALINK 21-Oct-24 07:00 21-Oct-24 13:00 6 Hours
Daily		 616L (59s Peigan - 616AL tap), 616L (103s Goose Lake - 616AL tap), 616AL (383s Kettles Hill Windfarm - 616L tap) Creating Open Point 'A' @ Structure #39  
ALTALINK 21-Oct-24 07:00 30-Oct-24 18:00 9.46 Days
Continuous		 820AL (315s Chin Chute - 820L tap), 820BL (967s Redcoat - 820L tap), 820L (254s Coaldale - 820AL tap), 820L (67s Stirling - 820BL tap), 820L (820AL tap - 820BL tap), 67s T2 (67s Stirling) LCM & WFM on several structures between Structures #172 - 325  
ALTALINK 21-Oct-24 08:00 26-Oct-24 17:00 5.38 Days
Continuous		 760L (760AL tap - 7LA760 tap) Replace cross arms and insulators on 7L760, 242 structures  
ATCO 21-Oct-24 08:00 28-Oct-24 08:00 7 Days
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) Changing rotten poles and red tag poles  
ATCO 21-Oct-24 08:00 28-Oct-24 16:00 7.33 Days
Continuous		 7L68 (730s Rycroft - 811s Clairmont Lake) Line Mitigation clearance issue  
ALTALINK 21-Oct-24 09:00 21-Oct-24 15:00 6 Hours
Daily		 1045AL (320p Keephills - 1045L tap), 320p 1352 (320p Keephills) Connect 1045AL CT from 320p1352 to new PMU  
BCH 21-Oct-24 09:00 25-Oct-24 17:00 4.33 Days
Continuous		 5L51 (BPA Custer - BCH Ingledow) ING 5CB3 insp, BC maintenance does not affect the Alberta ATC AB-BC
ATCO 21-Oct-24 10:00 24-Oct-24 16:30 3.27 Days
Continuous		 7L50 (757s Battle River - 491L tap) Structure, cross arm and insulator replacement on 7L50 between battle river and Jarrow.  
ALTALINK 21-Oct-24 13:30 24-Oct-24 17:30 3.17 Days
Continuous		 320p 3152 (320p Keephills) 500kV breaker maintenance  
ALTALINK, EPCOR 22-Oct-24 09:00 22-Oct-24 15:00 6 Hours
Daily		 1043L (320p Keephills - 367s Harry Smith), 320p 252 (320p Keephills), 320p 352 (320p Keephills) Connect Summated 1043L CT from 320p252 & 320p352 to new PMU  
ALTALINK 23-Oct-24 09:00 23-Oct-24 15:00 6 Hours
Daily		 190L (17s Benalto - 320p Keephills), 320p 652 (320p Keephills), 320p 552 (320p Keephills) Connect Summated 190L CT from 320p552 & 320p652 to new PMU  
ALTALINK, EPCOR 24-Oct-24 09:00 24-Oct-24 15:00 6 Hours
Daily		 930L (37s North Calder - Poundmaker), 320p 2052 (320p Keephills), 320p 2152 (320p Keephills) Connect Summated 903L CT from 320p2052 & 320p2152 to new PMU  
ALTALINK 28-Oct-24 08:00 02-Nov-24 17:00 5.38 Days
Continuous		 760L (760AL tap - 7LA760 tap) Replace cross arms and insulators on 7L760, 242 structures  
BCH 28-Oct-24 09:00 08-Nov-24 17:00 11.38 Days
Continuous		 T4 (BCH Natal) NTL station rebuild, T4 out of service for PN replacement AB-BC
ATCO 28-Oct-24 10:00 31-Oct-24 16:30 3.27 Days
Continuous		 7L50 (757s Battle River - 491L tap) Structure, cross arm and insulator replacement on 7L50 between battle river and Jarrow.  
ATCO 28-Oct-24 10:00 04-Nov-24 08:00 6.96 Days
Continuous		 7L40 (733s Simonette - 813s Little Smoky) Changing Poles and Cross Arms  
ENMAX, ALTALINK 28-Oct-24 12:30 31-Oct-24 17:30 3.21 Days
Continuous		 24.83L (74s Janet - SS-24) Altalink outage. 74s24.83X first trip and maintenance. Enmax to block reclosers on 24.83L.  
ENMAX, ALTALINK 28-Oct-24 12:30 31-Oct-24 17:30 3.21 Days
Continuous		 24.83L (74s Janet - SS-24) 74s24.83X first trip and maintenance.  
ALTALINK 28-Oct-24 13:30 31-Oct-24 17:30 3.17 Days
Continuous		 89s 1752 (89s Ellerslie) 500kV breaker maintenance  
EPCOR 29-Oct-24 07:00 31-Oct-24 17:00 2.42 Days
Continuous		 816s P2402 (816s Petrolia), 816s P2401 (816s Petrolia), 816s T1 (816s Petrolia) Petrolia: P2402 Breaker LCR Commissioning (PAB1 Op Checks)  
ATCO, SUNCOR 29-Oct-24 08:00 30-Oct-24 16:30 1.35 Days
Continuous		 29PL9-1 (29EDD-1 Millennium - 848s Ruth Lake), 848s 903 (848s Ruth Lake), 848s 906 (848s Ruth Lake) DFR Upgrade at Ruth Lake.
903 breaker statuses, 903CT, 906CT and 903PT inputs will be cutover to new DFR and commissioned.		  
ALTALINK 29-Oct-24 09:00 29-Oct-24 15:00 6 Hours
Daily		 320p 3052 (320p Keephills), 320p 2952 (320p Keephills) Connect Summated KH3 CT from 320p3052, 320p2952 to new PMU  
ALTALINK 29-Oct-24 09:00 29-Oct-24 16:30 7.5 Hours
Daily		 895s 100 (895s Suffield), 100L (498s Tilley - 895s Suffield) PRC5 First Trip / breaker maintenance / PRC5  
ATCO 29-Oct-24 09:00 05-Nov-24 16:00 7.33 Days
Continuous		 7L171 (802s Michichi Creek - 804s Wintering Hills) 7L171 critical crossing, Line to Ground and Line to Line Mitigation.
Cross arm and insulator replacement on 7L171, 30 Structures		  
ALTALINK 30-Oct-24 07:15 02-Nov-24 17:45 3.44 Days
Continuous		 1206L (12s Heartland - 89s Ellerslie) WMP: Replace insulator at structure 43. Replace jumper at structure 32. Repair downlead and install ground rod at structure 59. Replace broken insulators at structures 100, 103  
SUNCOR 30-Oct-24 08:00 02-Nov-24 18:00 3.42 Days
Continuous		 29EDD-65 29-952-4822 (29EDD-65) FB-29EDD65;29-952-4822 MAIN & TEST;PM 5y (46555394)  
ALTALINK, TRANSALTA 30-Oct-24 09:00 30-Oct-24 15:00 6 Hours
Daily		 320p 852 (320p Keephills) Connect KH2 CT from 320p852 to new PMU  
ALTALINK 30-Oct-24 23:00 31-Oct-24 03:00 4 Hours
Daily		 62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 31-Oct-24 03:00 31-Oct-24 07:00 4 Hours
Daily		 62s 12 (62s Brazeau Plant) maintenance  
ALTALINK 01-Nov-24 07:00 08-Nov-24 18:00 7.5 Days
Continuous		 925L (63s Red Deer - 74s Janet) South Crew will be repairing conductor core at 925L188  
ALTALINK 03-Nov-24 07:15 04-Nov-24 17:45 1.44 Days
Continuous		 1212L (12s Heartland - 89s Ellerslie) WMP: Replace insulator at structure 46, 48. Replace jumper at structure 32  
ALTALINK, EPCOR 04-Nov-24 07:00 05-Nov-24 17:00 1.42 Days
Continuous		 1055L (629s Argyll Transfer Station - 816s Petrolia), 816s P2402 (816s Petrolia), 816s P2403 (816s Petrolia) Petrolia: P2402 Breaker LCR Commissioning (PDS11 Op Checks)  
ATCO 04-Nov-24 08:00 07-Nov-24 16:00 3.33 Days
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) Changing rotten poles and red tag poles  
ATCO 04-Nov-24 08:00 07-Nov-24 16:00 3.33 Days
Continuous		 7L68 (730s Rycroft - 811s Clairmont Lake) Line Mitigation clearance issue  
ALTALINK 04-Nov-24 08:00 09-Nov-24 17:00 5.38 Days
Continuous		 760L (760AL tap - 7LA760 tap) Replace cross arms and insulators on 7L760, 242 structures  
ALTALINK 04-Nov-24 11:00 18-Nov-24 15:00 14.17 Days
Continuous		 199L (347s AML Fox Creek - 741s ATC Fox Creek) A741s work by ATCO  
ATCO 04-Nov-24 12:00 18-Nov-24 12:00 14 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 04-Nov-24 12:30 07-Nov-24 17:00 3.19 Days
Continuous		 266s 1037L FSC1 (266s SC1) FSC1 maintenance, CT repair/replacement  
ENMAX, ALTALINK 08-Nov-24 08:00 12-Nov-24 16:00 4.33 Days
Continuous		 936L (5s East Calgary - 102s Langdon) Tower climbing inspections. Install dampers  
ENMAX, ALTALINK 08-Nov-24 08:00 12-Nov-24 16:00 4.33 Days
Continuous		 937L (5s East Calgary - 102s Langdon) Tower climbing inspections. Install dampers  
ENMAX, ALTALINK 08-Nov-24 08:00 12-Nov-24 16:00 4.33 Days
Continuous		 936L (5s East Calgary - 102s Langdon) Tower climbing inspections. Install dampers.  
ENMAX, ALTALINK 08-Nov-24 08:00 12-Nov-24 16:00 4.33 Days
Continuous		 937L (5s East Calgary - 102s Langdon) Tower climbing inspections. Install dampers.  
ALTALINK 11-Nov-24 07:00 11-Nov-24 11:00 4 Hours
Daily		 879L (244s Bowmanton - 879AL tap), 879L (368s Burdett - 879L tap) Open East side jumpers at 457A.  
ALTALINK 11-Nov-24 11:00 21-Nov-24 14:00 10.13 Days
Continuous		 879L (244s Bowmanton - 879AL tap) Replace cross-arms, pole replacement and bird diverter installation between str 303-450 - VATD.  
ATCO 12-Nov-24 08:00 18-Nov-24 16:00 6.33 Days
Continuous		 7L68 (730s Rycroft - 811s Clairmont Lake) Line Mitigation clearance issue  
ATCO 12-Nov-24 09:00 18-Nov-24 08:00 5.96 Days
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) Changing rotten poles and red tag poles  
ATCO 12-Nov-24 09:00 18-Nov-24 16:00 6.29 Days
Continuous		 7L40 (733s Simonette - 813s Little Smoky) Changing Poles and Cross Arms  
ATCO 12-Nov-24 09:00 18-Nov-24 17:00 6.33 Days
Continuous		 7L171 (802s Michichi Creek - 804s Wintering Hills) 7L171 critical crossing, Line to Ground and Line to Line Mitigation.
Cross arm and insulator replacement on 7L171, 30 Structures		  
ALTALINK 12-Nov-24 12:30 14-Nov-24 17:00 2.19 Days
Continuous		 266s 1038L FSC2 (266s SC1) FSC2 maintenance, unbalanced alarm troubleshooting  
ATCO 13-Nov-24 09:00 13-Nov-24 11:00 2 Hours
Continuous		 7L68 (730s Rycroft - 811s Clairmont Lake) HIGH LOAD UNDER LINE AT 7L68-416  
ATCO 14-Nov-24 08:30 14-Nov-24 16:30 8 Hours
Continuous		 7L65 tap, 7L65 (709s Vegreville - 7LA65 tap), 7L65 (710s Vermilion - 7LA65 tap), 7LA65 (708s Grizzly Bear - 7L65 tap) Replace Damaged 7LA65D1 switch vacuum bottles. Full Line Outage on 7L65 required.
Inspect and make adjustments to 7LA65D1, 7L65D2, 7L65D3		  
ALTALINK, EPCOR 15-Nov-24 08:00 18-Nov-24 12:00 3.17 Days
Continuous		 1043L (320p Keephills - 367s Harry Smith) Replace CVT1 and 1043L strain insulators.  
ALTALINK 16-Nov-24 08:00 20-Nov-24 17:00 4.38 Days
Continuous		 851L (253s Blackie - 525s Carseland) Replace dead-end insulators at structures 125, 132, 133 & 139. Replace arms and insulators at structures 130, 134, 150, 153 & 155. Replace arms and insulators with line post insulators at structure 131. Repair downlead at structures 139 & 150  
EPCOR 18-Nov-24 07:00 23-Nov-24 17:00 5.42 Days
Continuous		 EP 803s T2 (EP 803s Lambton), EP 803s L2402 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton) Lambton: LDS9 LCR and TX2 Leak Repair and L2402 P&C Maintenance  
ATCO 18-Nov-24 10:00 25-Nov-24 08:00 6.92 Days
Continuous		 7L40 (733s Simonette - 813s Little Smoky) 7l40 Line to ground mitigation  
ATCO, ALTALINK 20-Nov-24 07:00 21-Nov-24 18:00 1.46 Days
Continuous		 1036L (356s Milo - 554s Travers) Repairing conductor and adjusting sag between structures 18 and 28 See also 290050 1005L (120s-991s-356s) - RB Required due to proximity  
ALTALINK 21-Nov-24 14:00 21-Nov-24 18:00 4 Hours
Daily		 879L (244s Bowmanton - 879AL tap), 879L (368s Burdett - 879L tap) Close East side jumpers at 457A.  
ATCO 25-Nov-24 10:00 02-Dec-24 08:00 6.92 Days
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) Changing rotten poles and red tag poles  
ENMAX, ALTALINK 26-Nov-24 07:00 26-Nov-24 18:00 11 Hours
Daily		 1107L (237s Foothills - SS-65) Replace insulators at structure 33. See also 289764 1106L RB that goes with this.  
ALTALINK 26-Nov-24 08:00 30-Nov-24 17:00 4.38 Days
Continuous		 850L (525s Carseland - 678s Okotoks) Replace aerial marker at structure 147. Replace insulators at structure 111, 128 & 129. Replace arms and insulators at structure 130 & 148. Repair downlead at structures 131, 133, 134, 135, 136, 138, 139 & 140.  
ALTALINK 26-Nov-24 08:30 27-Nov-24 17:00 1.35 Days
Continuous		 763L (158s Vauxhall - 257s Hull) 158s763N – PRC5 First Trip / breaker maintenance / PRC5  
ATCO 26-Nov-24 09:00 03-Dec-24 17:00 7.33 Days
Continuous		 7L171 (802s Michichi Creek - 804s Wintering Hills) 7L171 critical crossing, Line to Ground and Line to Line Mitigation.
Cross arm and insulator replacement on 7L171, 30 Structures		  
ALTALINK 28-Nov-24 07:00 03-Dec-24 18:00 5.46 Days
Continuous		 612L (336s Fincastle - 368s Burdett) Component replacement STR 36-212.  
ALTALINK 02-Dec-24 07:30 02-Dec-24 12:30 5 Hours
Daily		 616L (59s Peigan - 616AL tap), 616L (103s Goose Lake - 616AL tap), 616AL (383s Kettles Hill Windfarm - 616L tap) Closing Open Point 'A' @ Structure #39  
ATCO 02-Dec-24 10:00 09-Dec-24 08:00 6.92 Days
Continuous		 7L40 (733s Simonette - 813s Little Smoky) 7l40 Line to ground mitigation  
ALTALINK 04-Dec-24 07:00 08-Dec-24 18:00 4.46 Days
Continuous		 100L (498s Tilley - 895s Suffield) Upgrade 100L for 1061s Alderson Park Interconnection Project - str 242-297.  
ALTALINK 04-Dec-24 10:00 04-Dec-24 14:00 4 Hours
Daily		 250p 11 (250p Bighorn Plant) maintenance  
ALTALINK 05-Dec-24 10:00 05-Dec-24 14:00 4 Hours
Daily		 250p 22 (250p Bighorn Plant) maintenance  
ATCO 09-Dec-24 10:00 16-Dec-24 08:00 6.92 Days
Continuous		 7L32 (813s Little Smoky - 862s South Bezanson) Changing rotten poles and red tag poles  
ALTALINK 10-Dec-24 07:15 11-Dec-24 17:45 1.44 Days
Continuous		 926L (17s Benalto - 310p Sundance) LCM; install phase raisers on bottom phase (str24)  
ATCO 10-Dec-24 09:00 17-Dec-24 17:00 7.33 Days
Continuous		 7L171 (802s Michichi Creek - 804s Wintering Hills) 7L171 critical crossing, Line to Ground and Line to Line Mitigation.
Cross arm and insulator replacement on 7L171, 30 Structures		  
ALTALINK 11-Dec-24 07:00 19-Dec-24 18:00 8.46 Days
Continuous		 702L (137s Sedgewick - 757s Battle River), 137s 169X (137s Sedgewick) Replacing arms and insulators/general maintenance on structures 26,28,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,64,84,95,102,103,104,105,106,107,111,114,115,128,129,130,131,133,138,139,140,1 41,160,161,162,163,166, and 167.  
ALTALINK 12-Dec-24 07:15 13-Dec-24 18:45 1.48 Days
Continuous		 922L (17s Benalto - 310p Sundance) LCM; install phase raisers on bottom phase (str24)  
ALTALINK 15-Dec-24 07:00 19-Dec-24 18:00 4.46 Days
Continuous		 929L (74S Janet - 287s Hazelwood) Arctic Arrow requires a GOI on 929L to complete installation on interphase spacers in spans 117-120, 363, & 388-399. See also 290369 925L RB and 290370 932L RB that goes with this due to proximity  
ATCO 16-Dec-24 10:00 23-Dec-24 16:00 7.25 Days
Continuous		 7L40 (733s Simonette - 813s Little Smoky) Changing Poles and Cross Arms  
ALTALINK 18-Dec-24 23:00 19-Dec-24 03:00 4 Hours
Daily		 62s 11 (62s Brazeau Plant) maintenance  
ALTALINK 19-Dec-24 03:00 19-Dec-24 07:00 4 Hours
Daily		 62s 12 (62s Brazeau Plant) maintenance  
ATCO 14-Jan-25 10:00 14-Jan-25 17:00 7 Hours
Continuous		 801s 902 (801s Anderson) Final connection of Bkr 902/52a single pole status inputs to DFR, Commission  
ATCO 15-Jan-25 10:00 15-Jan-25 17:00 7 Hours
Continuous		 801S 903, 801s 903 (801s Anderson) Final connection of Bkr 903 52a single pole status inputs to DFR, Commission  
ATCO 16-Jan-25 10:00 16-Jan-25 17:00 7 Hours
Continuous		 801S 904, 801s 904 (801s Anderson) Final connection of Bkr 904 52a single pole status inputs to DFR, Commission  
ATCO 17-Jan-25 10:00 17-Jan-25 17:00 7 Hours
Continuous		 801s 905 (801s Anderson) Final connection of Bkr 905 52a single pole status inputs to DFR, Commission  
ATCO 18-Jan-25 10:00 18-Jan-25 17:00 7 Hours
Continuous		 801s 906 (801s Anderson) Final connection of Bkr 906 52a single pole status inputs to DFR, Commission  
ATCO 19-Jan-25 10:00 19-Jan-25 17:00 7 Hours
Continuous		 801s 907 (801s Anderson) Final connection of Bkr 907 52a single pole status inputs to DFR, Commission  
ATCO 28-Jan-25 10:00 28-Jan-25 17:00 7 Hours
Continuous		 801s 908 (801s Anderson) Final connection of Bkr 908 52a single pole status inputs to DFR, Commission  
ATCO 29-Jan-25 10:00 29-Jan-25 17:00 7 Hours
Continuous		 801s 909 (801s Anderson) Final connection of Bkr 909 52a single pole status inputs to DFR, Commission  
ATCO 30-Jan-25 10:00 30-Jan-25 17:00 7 Hours
Continuous		 801s 910 (801s Anderson) Final connection of Bkr 910 52a single pole status inputs to DFR, Commission  
ATCO 31-Jan-25 10:00 31-Jan-25 17:00 7 Hours
Continuous		 801s 911 (801s Anderson) Final connection of Bkr 911 52a single pole status inputs to DFR, Commission  
ATCO 01-Feb-25 10:00 01-Feb-25 17:00 7 Hours
Continuous		 801s 912 (801s Anderson) Final connection of Bkr 912 52a single pole status inputs to DFR, Commission  
ATCO 10-Feb-25 08:00 13-Feb-25 17:00 3.38 Days
Continuous		 7L85 (803s ATC Bullpound - 7LA85 tap) Install interphase spacers  
ATCO 10-Feb-25 12:30 13-Feb-25 15:00 3.1 Days
Continuous		 7L85 (804s Wintering Hills - 7LA85 tap) Cross arm and insulator replacement on 7L85
insulator replacement on 7L85		  
ATCO 14-Feb-25 08:00 17-Feb-25 17:00 3.38 Days
Continuous		 7L85 (804s Wintering Hills - 7LA85 tap) Install interphase spacers  
ATCO 17-Feb-25 08:00 20-Feb-25 17:00 3.38 Days
Continuous		 7L128 (802s Michichi Creek - 7LA128 tap) Installation of dynamic line rating sensors.  
ATCO 24-Feb-25 08:00 03-Mar-25 17:00 7.38 Days
Continuous		 7L85 (801s Anderson - ATC 803s Bullpound) Crossarm Replacements, install interphase spacers, clearance mitigation  
ENMAX, ALTALINK 24-Feb-25 08:00 14-Mar-25 16:00 18.29 Days
Continuous		 20.82L (SS-20 - SS-21), 21.80L (42s Sarcee - SS-21), 21.1TR (SS-21) HV SW Replacement 21SW81, 21SW82, 21SW83, 21MD138-21.1TR, 21.4TR (SS-21)  
ENMAX, ALTALINK 24-Feb-25 08:00 14-Mar-25 16:00 18.29 Days
Continuous		 21.80L (42s Sarcee - SS-21) HV SW Replacement 21SW81, 21SW82, 21SW83, 21MD138-21.1TR, 21.4TR (SS-21)  
ATCO 10-Mar-25 08:00 17-Mar-25 17:00 7.38 Days
Continuous		 7L85 (801s Anderson - ATC 803s Bullpound) Crossarm Replacements, install interphase spacers, clearance mitigation  
ENMAX, ALTALINK 17-Mar-25 08:00 27-Mar-25 16:00 10.33 Days
Continuous		 50L (44s Bearspaw Plant - SS-21) HV SW Replacement 21SW87, 21SW88, 21SW89, 21MD138-21.2TR  
ENMAX, ALTALINK 17-Mar-25 08:00 27-Mar-25 16:00 10.33 Days
Continuous		 50L (44s Bearspaw Plant - SS-21), 21.1C (SS-21), 21.2TR (SS-21) HV SW Replacement 21SW87, 21SW88, 21SW89, 21MD138-21.2TR  
ALTALINK 18-Mar-25 07:00 31-Mar-25 18:00 13.46 Days
Continuous		 610L (83s Taber - 336s Fincastle) VATD - Rebuild 610L.  
ATCO 18-Mar-25 08:00 19-Mar-25 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 24-Mar-25 08:00 27-Mar-25 17:00 3.38 Days
Continuous		 7L91 (715s Leming Lake - 826s Marguerite Lake) Cold Lake Area Energy Centre Project
Cutover CT/PT/P&C ccts for new Thermal RAS relays
Complete commissioning 49A/49B/7L91 relays
End-to-end testing to 1064S		  
ENMAX, ALTALINK 25-Apr-25 08:00 28-Apr-25 16:00 3.33 Days
Continuous		 20.82L (SS-20 - SS-21), 21.80L (42s Sarcee - SS-21), 21.1TR (SS-21), 50L (44s Bearspaw Plant - SS-21), 21.1C (SS-21), 21.2TR (SS-21) HV SW Replacement 21SW86. Full substation outage  
ALTALINK, ENMAX 25-Apr-25 08:00 28-Apr-25 16:00 3.33 Days
Continuous		 42s 22 (42s Sarcee), 21.80L (42s Sarcee - SS-21) HV SW Replacement 21SW86. Full substation outage  
ATCO 29-Apr-25 10:00 20-May-25 17:00 21.29 Days
Continuous		 9L99 (801s Anderson - 807s Sheerness) Replace Breaker 901 @ 807S Sheerness, complete line 21A, 21B/9L99 protection upgrade and Commissioning  
ATCO 20-May-25 08:00 27-May-25 17:00 7.38 Days
Continuous		 7L224 (650s Hansman Lake - 774s Monitor) Install interphase spacers on 7L224  
SUNCOR 06-Jun-25 00:00 22-Jun-25 00:00 16 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 and Testing - 29PT-260, 29PL7-4, 29PT-241, 29PT-257, 29PS-243 (450236799, 450233735, 31773784, 450237159)  
ATCO 09-Jun-25 09:00 23-Jun-25 17:30 14.35 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 09-Jun-25 09:00 23-Jun-25 17:30 14.35 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 09-Jun-25 09:00 23-Jun-25 17:30 14.35 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		  
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  
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  
ENMAX, ALTALINK 27-Jun-25 08:00 03-Jul-25 16:00 6.33 Days
Continuous		 37.2TR (SS-37), 37.82L (74s Janet - SS-37) HV SW Replacement. 37SW84, 37SW85, 37SW86  
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  
SUNCOR 01-Jul-25 00:00 18-Jul-25 00:00 17 Days
Continuous		 29PL7-3 (29EDD-65 - 29EDD-71), 29EDD-65 29PT-0236 (29EDD-65) FB-Maintenance and Testing - 29PT-250, 29PL7-3, 29PT-246, 29PT-236 (450237140, 450237180, 450237158)  
ATCO 03-Jul-25 08:00 05-Jul-25 17:00 2.38 Days
Continuous		 7L701 (757s Battle River - 7LA701 tap) Install interphase spacers  
ATCO 05-Aug-25 08:00 07-Aug-25 16:30 2.35 Days
Continuous		 7L702 (137s Sedgewick - 757s Battle River) Interphase spacers and pole replacements  
ATCO 11-Aug-25 10:00 14-Aug-25 16:30 3.27 Days
Continuous		 7L702 (137s Sedgewick - 757s Battle River) Interphase spacers and pole replacements  
ATCO 18-Aug-25 10:00 21-Aug-25 16:30 3.27 Days
Continuous		 7L702 (137s Sedgewick - 757s Battle River) Interphase spacers and pole replacements  
ATCO, ALTALINK 18-Aug-25 10:00 27-Aug-25 17:00 9.29 Days
Continuous		 7L129 (526s Buffalo Creek - 7LA129 tap), 710s 704 (710s Vermilion) 7L129 - A and B line protection upgrade.  
ATCO, ALTALINK 29-Sep-25 09:00 03-Oct-25 17:00 4.33 Days
Continuous		 7L77 (395s North Holden - 709s Vegreville) Install interphase spacers  
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 01-Oct-25 08:00 11-Nov-25 18:00 41.46 Days
Continuous		 1201L (520s Bennett - BCH Cranbrook) Replacing 102s SVC controls  
ALTALINK 01-Oct-25 08:00 11-Nov-25 18:00 41.46 Days
Continuous		 786L (799s Coleman - BCH Natal) 887L required to be open due to 1201L as per AESO Rule  
ALTALINK 01-Oct-25 08:00 11-Nov-25 18:00 41.46 Days
Continuous		 887L (48s Pocaterra - 978s BCH Britt Creek) 887L required to be open due to 1201L as per AESO Rule AB-BC
ATCO 14-Oct-25 08:00 21-Oct-25 17:00 7.38 Days
Continuous		 7L171 (802s Michichi Creek - 804s Wintering Hills) Install interphase spacers  
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		  
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		  

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: 2024-07-10   14:46:25


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

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