Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2024-09-28

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
ALTALINK 11-Jul-24 00:00 31-Oct-24 17:00 112.71 Days
Continuous
74s C4 (74s Janet) forced outage  
ALTALINK 19-Aug-24 07:00 28-Oct-24 08:00 70.04 Days
Continuous
19s 240kV Bus A (19S Wabamun), 19s 240kV Transfer Bus (19S Wabamun) issue salvage clearance on 19s 240kV ‘A’ & Transfer Busses.  
EPCOR 29-Aug-24 11:16 31-Oct-24 00:00 62.53 Days
Continuous
EP 805s J2408 (EP 805s Jasper), 805s C1 (805s Jasper) Forced outage.  
EPCOR 16-Sep-24 07:00 15-Nov-24 17:00 60.46 Days
Continuous
557s T1 (557s Castle Downs) S/S Tx1 outage for secondary duct bank modification  
ALTALINK 23-Sep-24 07:00 29-Sep-24 17:00 6.42 Days
Continuous
850L (525s Carseland - 678s Okotoks), 525s 850N (525s Carseland), 678s 850 (678s Okotoks) fix the steel core on 1201L span  
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 AB-BC
ALTALINK 23-Sep-24 08:00 04-Oct-24 18:00 11.42 Days
Continuous
887L (48s Pocaterra - 978s BCH Britt Creek), 48s 887X (48s Pocaterra) 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) due to 1201L as per AESO Rule AB-BC
ALTALINK 23-Sep-24 08:30 03-Oct-24 17:30 10.38 Days
Daily
520s T1 (520s Bennett), 520s 552 (520s Bennett), 520s R7 (520s Bennett) 520sT1, 552 & R7 maintenance.  
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 14:00 03-Oct-24 16:00 10.08 Days
Continuous
520s R7 (520s Bennett) R7 Maintenance AB-BC
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 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  
ENMAX 28-Sep-24 08:00 06-Oct-24 16:00 8.33 Days
Continuous
65.2TR (SS-65) Transformer Power Factor Test - 65.2TR.  
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
ALTALINK 30-Sep-24 08:00 12-Oct-24 17:00 12.38 Days
Continuous
760L (760AL tap - 7LA760 tap) Replace cross arms and insulators on 7L760, 242 structures  
ALTALINK 30-Sep-24 09:00 04-Oct-24 18:00 4.38 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) 5L94 Replace insulators & spacers. AB-BC
ATCO 30-Sep-24 09:30 01-Oct-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  
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
 
ATCO 30-Sep-24 10:30 02-Oct-24 15:00 2.19 Days
Continuous
2075s ACF11 (2075s Newell), 2075s ACF12 (2075s Newell), 2075s ACF13 (2075s Newell), 2075s ACF14 (2075s Newell) SVC1 VESDA Repair  
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  
EPCOR 01-Oct-24 07:00 02-Oct-24 17:00 1.42 Days
Continuous
987s C2402 (987s Clover Bar) Cloverbar S/S C2402 bay outage  
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) transformer DGA install  
ALTALINK, EPCOR 01-Oct-24 07:15 01-Oct-24 16:00 8.75 Hours
Daily
37s 81 (37s North Calder), 37s 76 (37s North Calder), 930L (37s North Calder - Poundmaker) Scope change from the 37s81 outage scheduled for 10/01 - 10/10. This change is required to include the 930L airbreak 37s72 and breaker 37s76 in the GOI zone to re-wire JBDC20 panel. At the end of the day the outage will transition to 37s81 breaker outage only  
ALTALINK, EPCOR 01-Oct-24 07:30 01-Oct-24 16:00 8.5 Hours
Continuous
930L (37s North Calder - Poundmaker) 930L: AltaLink works at 37s substation and requires 930L GOI  
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.
 
ALTALINK, TRANSALTA 01-Oct-24 08:00 03-Oct-24 17:00 2.38 Days
Continuous
33s T1 (33s Spray) maintenance  
ALTALINK, TRANSALTA 01-Oct-24 08:00 03-Oct-24 17:00 2.38 Days
Continuous
33s T2 (33s Spray) maintenance  
ATCO, CNRL 01-Oct-24 08:00 08-Oct-24 16:00 7.33 Days
Continuous
838s 75-BC-1912 (838s Horizon Mining), 838s 75-BC-1914 (838s Horizon Mining), 838s 75-BC-1915 (838s Horizon Mining), 838s 75-BC-1916 (838s Horizon Mining) Replaced failed 260kV dead tank breaker heaters. Take one breaker out at a time.  
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 12:00 02-Oct-24 16:30 28.5 Hours
Continuous
59s 352 (59s Peigan) Maint. and gauge replacement  
ENMAX 01-Oct-24 13:00 01-Oct-24 16:00 3 Hours
Continuous
162B240-RB134 (SS-162) HV Breaker SF6 Gas Sample - 162B240-RB134  
ALTALINK 01-Oct-24 13:00 03-Oct-24 17:30 2.19 Days
Continuous
289s T2 (289s Saunders Lake) Doble, maint, IDD monitor  
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  
ALTALINK 02-Oct-24 16:30 02-Oct-24 17:00 30 Mins
Daily
919L (77s Sagitawah - 310p Sundance) Test energize new 77s14 breaker  
EPCOR 03-Oct-24 07:00 04-Oct-24 17:00 1.42 Days
Continuous
987s C2404 (987s Clover Bar) Cloverbar S/S C2404 bay outage  
Lethbridge, ALTALINK 03-Oct-24 07:30 03-Oct-24 17:00 9.5 Hours
Continuous
181s 463L (181s Chinook), 463L (181s Chinook - 463AL tap) urgent require open end outage on 181s 463L breaker to replace faulty tank heaters.  
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.
 
ATCO 03-Oct-24 14:00 03-Oct-24 17:00 3 Hours
Continuous
ATC 803S 7L85D4 (ATC 803s Bullpound), ATC 803S 7L85D5 (ATC 803s Bullpound) Disconnect mobile substation 750S at 803s Bullpound  
ALTALINK 04-Oct-24 08:00 04-Oct-24 17:00 9 Hours
Daily
254s T2 (254s Coaldale) 254s10 replace switch (Like for Like)  
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.  
ALTALINK 04-Oct-24 14:00 18-Oct-24 18:00 14.17 Days
Continuous
523s 138kV Bus 2 (523s Bullshead), 523s T2 (523s Bullshead), 676L (244s Bowmanton - 523s Bullshead) Connecting new 498L and closing Open Points 'A' & 'B'. Fiber splicing on 498L OPGW & end to end testing.  
ENMAX, ALTALINK 05-Oct-24 08:00 05-Oct-24 18:00 10 Hours
Continuous
20.82L (SS-20 - SS-21), 21.80L (42s Sarcee - SS-21), 21.1TR (SS-21), 21.4TR (SS-21) Fall Substation Washing. Altalink required to remove AML VT4 60S100 fuses  
ENMAX, ALTALINK 05-Oct-24 08:00 05-Oct-24 18:00 10 Hours
Continuous
21.80L (42s Sarcee - SS-21) Fall Substation Washing.  
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.
 
ALTALINK, Lethbridge 05-Oct-24 21:00 06-Oct-24 08:00 11 Hours
Continuous
207L (111s Coalbanks - 370s North Lethbridge) 111S Station Outage Required to Inspect, Clean/Lube & Operate 138KV Breakers & Airbreak switches..  
ALTALINK 05-Oct-24 21:00 06-Oct-24 08:00 11 Hours
Continuous
725L (111s Coalbanks - 725AL tap), 725AL (618s Riverbend - 725L tap) 111S Station Outage Required to Inspect, Clean/Lube & Operate 138KV Breakers & Airbreak switches..  
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  
ENMAX, ALTALINK 07-Oct-24 08:00 07-Oct-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  
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 07-Nov-24 17:00 31.33 Days
Continuous
9L100 (801s Anderson - 807s Sheerness) Replace Breaker 902 @ 807S Sheerness, complete line 21A, 21B/9L100 protection upgrade and Commissioning  
ATCO 07-Oct-24 11:00 07-Oct-24 15:00 4 Hours
Continuous
ALC02L (409s Shell Scotford - 879s Upgrader) Need line outage to ground circuit ALC02L at ALC02L/01L span 5 to allow a high load move to pass through into Scotford.
Will also plan a HOP on ALC01L so we can lift the circuit using live line techniques.
 
ALTALINK 07-Oct-24 13:00 10-Oct-24 17:30 3.19 Days
Continuous
320p 3052 (320p Keephills) Testing & inspection of 320p3052  
ENMAX, ALTALINK 08-Oct-24 06:00 08-Oct-24 18:00 12 Hours
Continuous
832L (SS-10 - SS-12) 12 Sub Building Upgrade  
ALTALINK 08-Oct-24 07:00 10-Oct-24 18:00 2.46 Days
Continuous
863L (618s Riverbend - 891L tap), 618s 863X (618s Riverbend) Replace insulators at structures 6-12, 51, 126, 128, 157, 158, 159, 160, 161 & 162. Replace arms and insulators with line post insulators at structures 42, 130 & 136. Re-install keeper keys on structures 15, 61 & 101.  
ATCO 08-Oct-24 08:30 09-Oct-24 16:00 31.5 Hours
Continuous
7L28 (717s Ethel Lake - 846s Grand Centre), 846s 701 (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  
EPCOR, ALTALINK 09-Oct-24 07:00 10-Oct-24 17:00 1.42 Days
Continuous
EP 805s J2407 (EP 805s Jasper), 1045L (EP 805s Jasper - 1045AL tap) Jasper/1045L: DFR Cutover and Commissioning  
ALTALINK 09-Oct-24 07:30 11-Oct-24 16:30 2.38 Days
Continuous
AML 511s T30 (AML 511s Crossings), AML 511s SVC Plus (AML 511s Crossings) ACF14 and SVC+ Inspection & Maintenance. Annual Fire System Inspection  
SUNCOR 10-Oct-24 08:00 26-Oct-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 (CG)
300199980, 300347750, 300347749, 60113163
 
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 10:00 10-Oct-24 16:00 6 Hours
Continuous
951s 905 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
ALTALINK, EPCOR 10-Oct-24 16:00 10-Oct-24 16:30 30 Mins
Daily
930L (37s North Calder - Poundmaker), 37s 76 (37s North Calder) Test energize new 37s81 breaker  
EPCOR 11-Oct-24 07:00 11-Oct-24 17:00 10 Hours
Continuous
EP 805s J2405 (EP 805s Jasper) Jasper: J2405 DFR Cutovers and Commissioning  
Lethbridge, ALTALINK 12-Oct-24 07:30 12-Oct-24 17:00 9.5 Hours
Continuous
146s 667 (146s Macdonald), 667L (146s MacDonald - 370s North Lethbridge) Require open end outage on 667L breaker to replace faulty tank heaters.  
ENMAX, ALTALINK 12-Oct-24 08:00 12-Oct-24 16:00 8 Hours
Continuous
50L (44s Bearspaw Plant - SS-21), 21.1C (SS-21), 21.2TR (SS-21) Fall Substation Washing  
ENMAX, ALTALINK 12-Oct-24 08:00 12-Oct-24 16:00 8 Hours
Continuous
50L (44s Bearspaw Plant - SS-21) Fall Substation Washing  
ENMAX, ALTALINK 12-Oct-24 08:00 13-Oct-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. HV Breaker Maintenance - 24B138-24.81.  
ENMAX, ALTALINK 14-Oct-24 08:00 17-Oct-24 16:00 3.33 Days
Continuous
50L (44s Bearspaw Plant - SS-21) 21 Substation -Surge Arrester Addition  
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, ATCO 14-Oct-24 12:00 14-Oct-24 17:30 5.5 Hours
Daily
244s 152 (244s Bowmanton), 244s 252 (244s Bowmanton), 1035L (244s Bowmanton - 2075s Newell) Cut over CTs to new PMU.  
ENMAX, ALTALINK 15-Oct-24 06:00 15-Oct-24 18:00 12 Hours
Continuous
833L (SS-2 - SS-12) 12 Sub Building Upgrade  
ALTALINK 15-Oct-24 07:00 15-Oct-24 12:00 5 Hours
Daily
965L (326s Murray lake - 244s Bowmanton), 244s 252 (244s Bowmanton), 244s 352 (244s Bowmanton) Cut over CTs to new PMU.  
EPCOR 15-Oct-24 07:00 16-Oct-24 17:00 1.42 Days
Continuous
EP 805s J2407 (EP 805s Jasper), 1098L (EP 805s Jasper - Poundmaker) Jasper/1098L: DFR Cutovers and Commissioning  
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  
ATCO 15-Oct-24 08:00 08-Nov-24 17:30 24.44 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 15-Oct-24 08:30 16-Oct-24 16:00 31.5 Hours
Continuous
7L28 (717s Ethel Lake - 846s Grand Centre), 717s 701 (717s Ethel Lake) breaker maintenance  
ATCO 15-Oct-24 10:00 18-Oct-24 16:00 3.25 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 15-Oct-24 12:00 15-Oct-24 17:30 5.5 Hours
Daily
244s 552 (244s Bowmanton), 244s 652 (244s Bowmanton), 1074L (244s Bowmanton - 1074AL Tap) Cut over CTs to new PMU.  
ALTALINK 15-Oct-24 13:00 17-Oct-24 17:30 2.19 Days
Continuous
89s 352 (89s Ellerslie) Breaker maint. + First Trip, replace leaking grading capacitor  
ALTALINK 16-Oct-24 07:30 16-Oct-24 12:00 4.5 Hours
Daily
1034L (244s Bowmanton - 324s Cassils), 244s 452 (244s Bowmanton), 244s 552 (244s Bowmanton) Cut over CTs to new PMU.  
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.
 
ALTALINK 16-Oct-24 08:30 16-Oct-24 13:30 5 Hours
Daily
264s 252 (264s Elkwater) Replace gas density monitors on Breaker 264s252  
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 16-Oct-24 12:00 16-Oct-24 17:30 5.5 Hours
Daily
244s 2152 (244s Bowmanton), 244s 2252 (244s Bowmanton), 676L (244s Bowmanton - 523s Bullshead) Cut over CTs to new PMU.  
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 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  
ALTALINK 17-Oct-24 12:00 17-Oct-24 17:30 5.5 Hours
Daily
244s 2952 (244s Bowmanton), 244s 3052 (244S Bowmanton), 892L (244s Bowmanton - 895s Suffield) Cut over CTs to new PMU.  
ALTALINK 18-Oct-24 07:30 18-Oct-24 12:00 4.5 Hours
Daily
244s 3052 (244S Bowmanton), 244s 3152 (244s Bowmanton), 674L (244s Bowmanton - 649s Chappice Lake) Cut over CTs to new PMU.  
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  
ATCO 18-Oct-24 10:00 18-Oct-24 16:00 6 Hours
Continuous
951s 908 (951s Thickwood Hills) PRC-005 Trip Coil Testing  
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. AB-BC
ALTALINK 19-Oct-24 07:30 19-Oct-24 12:00 4.5 Hours
Daily
675L (244s Bowmanton - 321s Al Rothbauer), 244s 2552 (244s Bowmanton), 244s 2652 (244s Bowmanton) Cut over CTs to new PMU.  
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 'C' @ Structure #39  
EPCOR 21-Oct-24 07:00 21-Oct-24 17:00 10 Hours
Continuous
PM2405 (Poundmaker) Poundmaker: PM2405 NAIT Student Substation Tour  
EPCOR 21-Oct-24 07:00 26-Oct-24 17:00 5.42 Days
Continuous
52s E2402 (52s East Industrial), 52s T2 (52s East Industrial) East Industrial: TX2 Doble and E2402 (SF6) Breaker Maintenance  
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 07:30 22-Oct-24 16:30 1.38 Days
Continuous
880L (321s Al Rothbauer - 523s Bullshead) Updating and testing line protections. Commission new LTO and RAS Circuits.  
ATCO 21-Oct-24 08:30 22-Oct-24 16:00 31.5 Hours
Continuous
7L583 (715s Leming Lake - 970s Bourque), 715s 701 (715s Leming Lake) breaker maintenance  
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 16:00 3.25 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
 
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 13:00 31-Oct-24 17:30 10.19 Days
Continuous
63s T1 (63s Red Deer) 25kV bushing(H0X0) replacement, doble, maintenance, leak repairs  
ALTALINK 21-Oct-24 13:30 24-Oct-24 17:30 3.17 Days
Continuous
320p 3152 (320p Keephills) 500kV breaker maintenance  
ENMAX, ALTALINK 22-Oct-24 06:00 22-Oct-24 18:00 12 Hours
Continuous
832L (SS-10 - SS-12) 12 Sub Building Upgrade  
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  
ENMAX, ALTALINK 23-Oct-24 07:00 27-Oct-24 18:00 4.46 Days
Continuous
50L (44s Bearspaw Plant - SS-21) Repair woodpecker damage at structures 119 & 122. Replace structures 116 & 117.  
ALTALINK 23-Oct-24 07:00 31-Oct-24 18:00 8.46 Days
Continuous
925L (63s Red Deer - 74s Janet) South Crew will be repairing conductor core at 925L188  
ALTALINK 23-Oct-24 07:30 24-Oct-24 16:30 1.38 Days
Continuous
676L (244s Bowmanton - 523s Bullshead) Updating and testing line protections. Commission new LTO and RAS Circuits to I-1054s.  
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 25-Oct-24 09:00 25-Oct-24 15:00 6 Hours
Daily
1045AL (320p Keephills - 1045L tap), 320p 1352 (320p Keephills) Connect 1045AL CT from 320p1352 to new PMU  
ALTALINK 26-Oct-24 07:30 26-Oct-24 13:30 6 Hours
Daily
38s 240kV Bus 1 (38s East Edmonton), 38s T1 (38s East Edmonton) Cutover new alarms, controls, and statuses to new SCADA system.  
ALTALINK 26-Oct-24 09:00 26-Oct-24 15:00 6 Hours
Continuous
320p 3052 (320p Keephills), 320p 2952 (320p Keephills) Connect Summated KH3 CT from 320p3052, 320p2952 to new PMU  
EPCOR, ALTALINK 28-Oct-24 07:00 29-Oct-24 17:00 1.42 Days
Continuous
EP 805s J2404 (EP 805s Jasper), EP 805s J2403 (EP 805s Jasper), 1044L (EP 805s Jasper - 816s Petrolia) Jasper/1044L: DFR Cutover and Commissioning  
ALTALINK 28-Oct-24 07:00 31-Oct-24 18:00 3.46 Days
Continuous
19s T10 (19s Wabamun), 19s 240kV Bus A (19S Wabamun), 905L (19s Wabamun - 37s North Calder), 902L (19s Wabamun - 310p Sundance) Proximity outage to complete the salvage of 19s 240kV ‘A’ Bus & 240kV Transfer Bus. Replace 19s905 CTs. RSLD 3 to be implemented at the start of the outage.  
EPCOR 28-Oct-24 07:00 01-Nov-24 17:00 4.42 Days
Continuous
EP 803s T3 (EP 803s Lambton), EP 803s L721 (EP 803s Lambton) Lambton: L721 Bay PT LCR  
EPCOR 28-Oct-24 07:00 02-Nov-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  
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.  
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  
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.
 
ATCO, FMGW, ALTALINK 29-Oct-24 08:00 31-Oct-24 17:30 2.4 Days
Continuous
1024s PT-6001 (1024s Granlea), 1024s PT-6002 (1024s Granlea), 1024s RTU/SCADA (1024s Granlea) SGRE uprate work, relay work for hybrid contact swap, Firewall and network changes – remote/on-site, AE will perform point-to-point check, GE MPT 1 leak repairs.  
ATCO 29-Oct-24 09:00 05-Nov-24 17:00 7.38 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
 
ATCO 29-Oct-24 10:00 29-Oct-24 16:00 6 Hours
Continuous
939s 1216R (939s Livock) update ITM settings on 1216R, relay settings changes to REQ670 bay controller, alarm changes/ updates to station controller and HMI.  
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  
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  
EPCOR 31-Oct-24 07:00 01-Nov-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)  
SUNCOR 03-Nov-24 00:00 10-Nov-24 23:00 8 Days
Continuous
29EDD-71 29PT-237 (29EDD-71) FB - 29PT-244 MVT MAINTENANCE PM 5y (WO: 450236578)  
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
1044L (EP 805s Jasper - 816s Petrolia), 816s P2405 (816s Petrolia), 816s P2406 (816s Petrolia) Petrolia: P2405 Breaker LCR Commissioning (PDS14 Op Checks)  
EPCOR 04-Nov-24 07:00 13-Dec-24 17:00 39.42 Days
Continuous
987s CDS45 (987s Cloverbar) Cloverbar S/S 1191L bay isolation  
ALTALINK 04-Nov-24 07:30 07-Nov-24 14:30 3.29 Days
Continuous
37s T5 (37s North Calder), 37s T6 (37s North Calder), 37s 138kV Bus (37s North Calder), 37s 4 (37s North Calder) Switch replacement (37s3)  
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, EPCOR 04-Nov-24 09:30 15-Nov-24 17:00 11.31 Days
Continuous
915L (38s East Edmonton - 987s Clover Bar), 987s C2403 (987s Clover Bar), 987s C2405 (987s Clover Bar) 915L: Cloverbar Teleprotection Upgrade w/AltaLink  
ALTALINK, EPCOR 04-Nov-24 09:30 15-Nov-24 17:00 11.31 Days
Continuous
915L (38s East Edmonton - 987s Clover Bar), 38s 7152 (38s East Edmonton), 38s 7252 (38s East Edmonton) 915L Cloverbar Teleprotection Upgrade w/AltaLink  
ATCO 04-Nov-24 10:00 08-Nov-24 16:00 4.25 Days
Continuous
951s 901T (951s Thickwood Hills), 951s 902T (951s Thickwood Hills), 951s SVC (951s Thickwood) SVC fall inspections and maintenance, IPCOMM (SVC Data Concentrator) relay replacement/ commissioning/ RTU Config updates  
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 12:01 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 05-Nov-24 06:00 05-Nov-24 18:00 12 Hours
Continuous
833L (SS-2 - SS-12) 12 Sub Building Upgrade  
ATCO 05-Nov-24 08:00 08-Nov-24 16:00 3.33 Days
Continuous
930s Syn Condenser (930s Arcenciel) maintenance on Synchronous Condenser  
BCH 05-Nov-24 09:00 08-Nov-24 17:00 3.33 Days
Continuous
5L91 (BCH Ashton Creek - BCH Selkirk) Outage required to replaced badly damaged portion of steel tower 39-2, discovered during September 2024 line maintenance BC maintenance does not affect the Alberta ATC AB-BC
ENMAX, ALTALINK 06-Nov-24 08:00 07-Nov-24 16:00 1.33 Days
Continuous
28.80L (42s Sarcee - SS-28) CT terminal block replacement 28B138-28.80  
ENMAX 08-Nov-24 08:00 08-Nov-24 12:00 4 Hours
Continuous
162B240-RB131 (SS-162) CT Terminal Block 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.  
ENMAX 08-Nov-24 12:00 08-Nov-24 16:00 4 Hours
Continuous
162B240-RB132 (SS-162) CT Terminal Block Replacement  
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. Install and Commission new CT circuits to new RAS protections  
EPCOR 11-Nov-24 07:00 15-Nov-24 17:00 4.42 Days
Continuous
330p 1207 (330p Genesee), 330p 1204 (330p Genesee), 330p 1201 (330p Genesee), 330P 12TC1 (330p Genesee), 330p 1210 (330p Genesee), 330p 1214 (330p Genesee), 330p 805 (330p Genesee) Genesee: 500kV BUS 1 - RTU Upgrade Project Cutovers/Commissioning  
ALTALINK 11-Nov-24 09:00 22-Nov-24 12:00 11.13 Days
Continuous
15s 138kV Bus1 (15s Fort Macleod), 15s T1 (15s Fort Macleod), 180L (15s Fort Macleod - 180AL tap), 463L (15s Fort Macleod - 463AL tap) Install and commission new T1 protections, 15s22 control, VT1 distribution, 138kV bus differential protection upgrades, 138V/25kV trip testing pertaining to the 15s Stage 3 building upgrade project.  
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. Install new line protection and RAS.  
ALTALINK 12-Nov-24 07:00 14-Nov-24 18:00 2.46 Days
Continuous
1041L (370s North Lethbridge - 554s Travers) *P5* South will be replacing dampers on 1041L195,196, 221, 223, 267, 269 See also 291617 1005L (356s-I_991s_120s) RB, that goes with this due to proximity  
EPCOR 12-Nov-24 07:00 13-Dec-24 17:00 31.42 Days
Continuous
816s P2402 (816s Petrolia) Petrolia: P2402 Breaker LCR  
ENMAX 12-Nov-24 08:00 12-Nov-24 12:00 4 Hours
Continuous
162B240-RB134 (SS-162) CT Terminal Block Replacement  
ALTALINK, EPCOR 12-Nov-24 08:00 15-Nov-24 17:00 3.38 Days
Continuous
1043L (320p Keephills - 367s Harry Smith) Replace CVT1 and 1043L strain insulators.  
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
 
EPCOR 13-Nov-24 07:00 15-Nov-24 17:00 2.42 Days
Continuous
805s T1 (805s Jasper), 72JM18 (EP 805s Jasper - Meadowlark), 72JW19 (EP 805s Jasper - Woodcroft), EP 805s J722 (EP 805s Jasper), EP 805s J724 (EP 805s Jasper) Jasper: TX1 DFR Cutovers and Commissioning  
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 13-Nov-24 09:00 14-Nov-24 16:00 31 Hours
Continuous
9L59 (801s Anderson - 9LA59 tap), 801s 902 (801s Anderson), 801s 903 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT902-X, CT903-Y, 902PTY2, 902 status, and 903 status.
Demo inputs from existing DSM: CT902-X, CT903-Y, and 902PTY1.
Cutover 903A from existing RTU I/O to new SEL DPAC I/O and verify status and control to local HM
 
ALTALINK 13-Nov-24 12:00 13-Nov-24 17:30 5.5 Hours
Daily
244s 3152 (244s Bowmanton), 244s 3252 (244s Bowmanton), 879L (244s Bowmanton - 879AL tap) Cutover CTs to new PMU for 244s voltage control project.  
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
 
ATCO 15-Nov-24 09:00 16-Nov-24 16:00 31 Hours
Continuous
801s 903 (801s Anderson), 801s 904 (801s Anderson), 9L70 (801s Anderson - 946s Oakland) Cutover and commission the following inputs to the new DFR: CT903-X, CT904-Y, and 904 status.  
ATCO 17-Nov-24 09:00 18-Nov-24 16:00 31 Hours
Continuous
9L950 (132s Ware Junction - 801s Anderson), 801s 911 (801s Anderson), 801s 912 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT911-X & CT912-X, 911PTY2, and 912 status.
Demo inputs from existing DSM: CT911-X & CT912-X, 911PTY1
PRC-005 - TRIP & CLOSE COIL TESTING - BREAKER 912
 
ALTALINK, DOW 18-Nov-24 07:00 19-Nov-24 17:00 1.42 Days
Continuous
166s T1 (166s Dow Chemical Fort Saskatchewan) maintenance  
ALTALINK, EPCOR 18-Nov-24 07:00 22-Nov-24 17:00 4.42 Days
Continuous
1238L (330p Genesee - 510s Sunnybrook), 330p 1201 (330p Genesee), 330p 1202 (330p Genesee) Genesee:1238L - RTU Upgrade Project Cutovers/Commissioning  
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 08:30 21-Nov-24 17:30 3.38 Days
Continuous
9L36 (825s Whitefish Lake - 826s Marguerite Lake), 825s 902 (825s Whitefish Lake), 825s 906 (825s Whitefish Lake) 902 PRC Trip Coil Testing
9L36 PRC Aux. relay testing
9L36 RTXP replacement
 
ALTALINK, EPCOR 18-Nov-24 09:30 29-Nov-24 17:00 11.31 Days
Continuous
921L (71s Lamoureux - 987s Clover Bar), 987s C2404 (987s Clover Bar), 987s C2406 (987s Clover Bar) 921L: Cloverbar Teleprotection Upgrade w/AltaLink  
ALTALINK, EPCOR 18-Nov-24 09:30 29-Nov-24 17:00 11.31 Days
Continuous
1238L (330p Genesee - 510s Sunnybrook) Genesee: 1238L - RTU Upgrade Project Cutovers/Commissioning  
ALTALINK 18-Nov-24 13:00 19-Nov-24 16:30 27.5 Hours
Continuous
205s 452 (205s Castle Rock Ridge), 205s 352 (205s Castle Rock Ridge), 1071L (205s Castle Rock Ridge - 312s Fidler) 205s452 Breaker maintenance and first trip. Exercise/ repair 205s7.  
ATCO 18-Nov-24 13:00 25-Nov-24 08:00 6.79 Days
Continuous
7L40 (733s Simonette - 813s Little Smoky) 7l40 Line to ground mitigation  
ALTALINK 18-Nov-24 13:30 21-Nov-24 17:00 3.15 Days
Continuous
74s 2552 (74s Janet) First trip and breaker maintenance.  
ATCO 19-Nov-24 09:00 21-Nov-24 16:00 2.29 Days
Continuous
13L50 (2029s Heathfield - 2075s Newell) Bird Mitigation on 2075S DC FILTER DCF11.  
ATCO 19-Nov-24 09:00 24-Nov-24 17:00 5.33 Days
Continuous
7L701 (757s Battle River - 7LA701 tap) Replace overhead shield wire with OPGW cable on 7L701 from Structure 1 to 11.  
ALTALINK, DOW 20-Nov-24 07:00 21-Nov-24 17:00 1.42 Days
Continuous
166s T2 (166s Dow Chemical Fort Saskatchewan) maintenance  
ALTALINK 20-Nov-24 10:00 21-Nov-24 16:00 30 Hours
Continuous
1048L (59s Peigan - 138s Windy Flats) 59s952 First Trip and Maint. replace densimeter. 59s23 switch repair.  
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.  
ALTALINK 23-Nov-24 07:00 25-Nov-24 17:00 2.42 Days
Continuous
725L (674s Bowron - 725AL tap) Replace protections and install new risers on 674s4  
Lethbridge, ALTALINK 23-Nov-24 07:30 25-Nov-24 17:00 2.4 Days
Continuous
674s 725W (674s Bowron), 725L (674s Bowron - 725AL tap) Install new A & B protections and perform local commissioning at 674s.  
ALTALINK, EPCOR 25-Nov-24 07:00 29-Nov-24 17:00 4.42 Days
Continuous
1239L (330p Genesee - 510s Sunnybrook), 330p 1205 (330p Genesee), 330p 1206 (330p Genesee) Genesee:1239L - RTU Upgrade Project Cutovers/Commissioning  
ENMAX, ALTALINK 25-Nov-24 08:00 28-Nov-24 16:00 3.33 Days
Continuous
918L (281s Johnson - SS-162) 162 Substation -Surge Arrester Addition  
ENMAX, ALTALINK 25-Nov-24 08:00 28-Nov-24 16:00 3.33 Days
Continuous
918L (281s Johnson - SS-162) 162 Substation -Surge Arrester Addition  
ATCO 25-Nov-24 13:00 29-Nov-24 17:00 4.17 Days
Continuous
7L702 (137s Sedgewick - 757s Battle River) AltaLink Request for COG from ATCO for 702L Component Replacement (STR 26 - 167).  
ALTALINK 25-Nov-24 13:00 29-Nov-24 17:00 4.17 Days
Continuous
702L (137s Sedgewick - 757s Battle River) 702L Component Replacement (STR 26 - 167)  
ALTALINK 26-Nov-24 07:00 26-Nov-24 17:00 10 Hours
Daily
498s T1 (498s Tilley) Modify A87/50/51/T1 CT contribuition. Test 67/67N/79/81/96/L7 Breaker fail trip to 498s29 and 498s257E.Modify B87/50/51/51NN/T1  
ENMAX, ALTALINK 26-Nov-24 07:00 26-Nov-24 18:00 11 Hours
Continuous
1107L (237s Foothills - SS-65) Altalink outage. Replace insulators at structure 33. Block reclosers on 1107L.  
ATCO 26-Nov-24 09:00 27-Nov-24 16:00 31 Hours
Continuous
9L97 (801s Anderson - 946s Oakland), 801s 905 (801s Anderson), 801s 906 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT905-X, CT906-X, and 905 status.
Demo inputs from existing DSM: CT905-X, CT906-X
Cutover 905a / 905b / 906a from existing RTU I/O to new SEL DPAC I/O and verify status and control to local HMI and SOC.
PRC-005 - T
 
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 26-Nov-24 10:30 26-Nov-24 17:00 6.5 Hours
Daily
100L (498s Tilley - 895s Suffield) 895s100 – PRC5 First Trip / breaker maintenance / PRC5  
ALTALINK 28-Nov-24 07:00 28-Nov-24 18:00 11 Hours
Continuous
612L (336s Fincastle - 368s Burdett) Replacing arms and insulators on structure 85 .  
ALTALINK 28-Nov-24 07:30 29-Nov-24 17:00 1.4 Days
Continuous
725L (15s Fort MacLeod - 725BL tap), 725L (674s Bowron - 725BL tap), 725BL (240s McBride Lake - 725L tap) Line outage to perform end to end and functional testing requiring trips at 674s and 15s  
Lethbridge 28-Nov-24 07:30 29-Nov-24 17:00 1.4 Days
Continuous
674s 725W (674s Bowron) 725LW Line outage to perform end-to-end and functional testing at 15s and 674s  
ATCO 28-Nov-24 09:00 29-Nov-24 16:00 31 Hours
Continuous
9L933 (132s Ware Junction - 801s Anderson), 801s 907 (801s Anderson), 801s 908 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT907-X & CT908-Y, and 908 status.
Demo inputs from existing DSM: None
Cutover 907a / 908b / 908a / 9l933d1 / 908 alarms from existing RTU I/O to new SEL DPAC I/O and verify status and control to local HMI and SOC.
 
ATCO 30-Nov-24 09:00 01-Dec-24 16:00 31 Hours
Continuous
9L934 (132s Ware Junction - 801s Anderson), 801s 909 (801s Anderson), 801s 910 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT909-X, CT910-X, 909PTY2, and 909 status.
Demo inputs from existing DSM: CT909, CT910, and 909pty1.
 
ALTALINK 02-Dec-24 07:00 02-Dec-24 12:30 5.5 Hours
Daily
616L (59s Peigan - 616AL tap), 616L (103s Goose Lake - 616AL tap), 616AL (383s Kettles Hill Windfarm - 616L tap) Closing Open Point 'C' @ Structure #39  
EPCOR, ALTALINK 02-Dec-24 07:00 06-Dec-24 17:00 4.42 Days
Continuous
330p 1208 (330p Genesee), 330p 1209 (330p Genesee), 1209L (89s Ellerslie - 330p Genesee) Genesee:1209L - RTU Upgrade Project Cutovers/Commissioning  
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  
ATCO 02-Dec-24 13:00 06-Dec-24 17:00 4.17 Days
Continuous
7L702 (137s Sedgewick - 757s Battle River) AltaLink Request for COG from ATCO for 702L Component Replacement (STR 26 - 167).  
ALTALINK 02-Dec-24 13:00 06-Dec-24 17:00 4.17 Days
Continuous
702L (137s Sedgewick - 757s Battle River) 702L Component Replacement (STR 26 - 167)  
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, EPCOR 05-Dec-24 07:00 06-Dec-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)  
ALTALINK 05-Dec-24 10:00 05-Dec-24 14:00 4 Hours
Daily
250p 22 (250p Bighorn Plant) maintenance  
EPCOR 09-Dec-24 07:00 10-Dec-24 17:00 1.42 Days
Continuous
816s P2402 (816s Petrolia), 816s P2401 (816s Petrolia), 816s T1 (816s Petrolia) Petrolia: P2402 Breaker LCR Commissioning (PAB1 Op Checks)  
EPCOR 09-Dec-24 07:00 13-Dec-24 17:00 4.42 Days
Continuous
330p 1209 (330p Genesee), 330p 1203 (330p Genesee), 330p 12TC2 (330p Genesee), 330p 809 (330p Genesee), 330p 1211 (330p Genesee), 330p 1215 (330p Genesee) Genesee:500kV BUS 2 - RTU Upgrade Project Cutovers/Commissioning  
ALTALINK 09-Dec-24 12:00 12-Dec-24 17:30 3.23 Days
Continuous
244s 240kV Bus 1 (244s Bowmanton), 244s 138kV Bus 1 (244s Bowmanton), 244s T1 (244s Bowmanton), 244s 152 (244s Bowmanton), 244s 452 (244s Bowmanton), 244s 2189 (244s Bowmanton), 244s 2152 (244s Bowmanton), 244s 2552 (244s Bowmanton), 244s 3752 (244s Bowmanton) Connect risers to new C1 and C2. Trip test breakers and connect CTs.  
ATCO 09-Dec-24 13:00 13-Dec-24 17:00 4.17 Days
Continuous
7L702 (137s Sedgewick - 757s Battle River) AltaLink Request for COG from ATCO for 702L Component Replacement (STR 26 - 167).  
ALTALINK 09-Dec-24 13:00 13-Dec-24 17:00 4.17 Days
Continuous
702L (137s Sedgewick - 757s Battle River) 702L Component Replacement (STR 26 - 167)  
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
 
ENMAX, ALTALINK 11-Dec-24 08:00 16-Dec-24 16:00 5.33 Days
Continuous
21.80L (42s Sarcee - SS-21) 21 Substation -Surge Arrester Addition  
ENMAX, ALTALINK 11-Dec-24 08:00 16-Dec-24 16:00 5.33 Days
Continuous
932L (74s Janet - SS-162) 162 Substation -Surge Arrester Addition  
ENMAX, ALTALINK 11-Dec-24 08:00 16-Dec-24 16:00 5.33 Days
Continuous
21.80L (42s Sarcee - SS-21) 21 Substation -Surge Arrester Addition  
ENMAX, ALTALINK 11-Dec-24 08:00 16-Dec-24 16:00 5.33 Days
Continuous
932L (74s Janet - SS-162) 21 Substation -Surge Arrester Addition  
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, TRANSALTA 12-Dec-24 13:00 16-Dec-24 17:00 4.17 Days
Continuous
59s T1 (59s Peigan), 616L (59s Peigan - 616AL tap) Demo/Remove 59s11 and 59s8 and convert into bus support structures.  
ALTALINK 13-Dec-24 07:30 16-Dec-24 12:00 3.19 Days
Continuous
244s 138kV Bus 2 (244s Bowmanton), 244s T2 (244s Bowmanton), 244s 240kV Bus 2 (244s Bowmanton), 244s 352 (244s Bowmanton), 244s 652 (244s Bowmanton), 244s 2389 (244s Bowmanton), 244s 2252 (244s Bowmanton), 244s 2652 (244s Bowmanton), 244s 2489 (244s Bowmanton) Connect risers to new C3. Trip test breakers and connect CTs.  
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 16-Dec-24 12:30 17-Dec-24 17:00 28.5 Hours
Continuous
763L (158s Vauxhall - 257s Hull) 158s763N – PRC5 First Trip / breaker maintenance / PRC5  
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 06-Jan-25 08:00 13-Jan-25 16:00 7.33 Days
Continuous
7L68 (730s Rycroft - 811s Clairmont Lake) Line to line and line to ground mitigation  
ATCO 07-Jan-25 09:00 10-Jan-25 16:00 3.29 Days
Continuous
801s 901T (801s Anderson), 801s 902 (801s Anderson), 801s 704 (801s Anderson) DFR Upgrade at Anderson.
Cutover and commission the following inputs to the new DFR: CT901-X, CT902-Y, and 704 status.
Relay settings updates: 87tb/901t and 51tv-59n-51n/901t and associated wiring modifications.
Scada configuration changes, including verification of alarms to local HMI and SOC.
 
ATCO 11-Jan-25 09:00 12-Jan-25 17:00 1.33 Days
Continuous
801s 705 (801s Anderson), 7L85 (801s Anderson - ATC 803s Bullpound) DFR Upgrade at Anderson.
Demo inputs from existing DSM: 705CT, 21A/7L85 and 21B/7L85 DSM trigger, 94-700BS1 trigger (requires blocking of 87BA/700BS1 during wire removal), and 700PT1Y1 input (requires blocking during wire removal).
7L85 relay setting updates.
 
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 20-Jan-25 08:00 27-Jan-25 16:00 7.33 Days
Continuous
7L68 (730s Rycroft - 811s Clairmont Lake) Line to line and line to ground mitigation  
ATCO, ALTALINK 20-Jan-25 10:00 23-Jan-25 16:30 3.27 Days
Continuous
7L129 (526s Buffalo Creek - 7LA129 tap) Replace structures, cross arms and insulators on 7L129  
ATCO, ALTALINK 27-Jan-25 10:00 30-Jan-25 16:30 3.27 Days
Continuous
7L129 (526s Buffalo Creek - 7LA129 tap) Replace structures, cross arms and insulators on 7L129  
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 03-Feb-25 08:00 10-Feb-25 16:00 7.33 Days
Continuous
7L68 (730s Rycroft - 811s Clairmont Lake) Line to line and line to ground mitigation  
ATCO 03-Feb-25 09:00 10-Feb-25 16:00 7.29 Days
Continuous
9L10 (876s Brintnell - 939s Livock) Line to Ground Mitigation  
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 09:00 24-Feb-25 16:00 7.29 Days
Continuous
9L10 (876s Brintnell - 939s Livock) Line to Ground Mitigation  
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 03-Mar-25 09:00 10-Mar-25 16:00 7.25 Days
Continuous
9L10 (876s Brintnell - 939s Livock) Line to Ground Mitigation  
ATCO 10-Mar-25 08:00 13-Mar-25 17:00 3.38 Days
Continuous
7L28 (717s Ethel Lake - 846s Grand Centre) 7L28 Line to ground clearance mitigation  
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  
ATCO 17-Mar-25 10:00 26-Mar-25 16:00 9.25 Days
Continuous
7L65 (709s Vegreville - 7LA65 tap) 7L65 cutovers to new line.  
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
 
ATCO 24-Mar-25 08:00 31-Mar-25 17:00 7.38 Days
Continuous
7L85 (801s Anderson - ATC 803s Bullpound) Crossarm Replacements, install interphase spacers, clearance mitigation  
ATCO, ALTALINK 24-Mar-25 10:00 27-Mar-25 16:30 3.27 Days
Continuous
7L129 (526s Buffalo Creek - 7LA129 tap) Replace structures, cross arms and insulators on 7L129  
ATCO 21-Apr-25 08:00 24-Apr-25 17:00 3.38 Days
Continuous
7L86 (822s Wolf Lake - 1200s Foster Creek) Cenovus is expanding their 1200S substation 26m to the south, toward structure 449.
We will be relocating the conductor north of structure 449 to the new A-Frame structure that Cenovus is installing inside their substation.
 
ENMAX, ALTALINK 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  
ENMAX, ALTALINK 25-Apr-25 08:00 28-Apr-25 16:00 3.33 Days
Continuous
50L (44s Bearspaw Plant - 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  
SUNCOR 03-May-25 09:00 15-May-25 16:00 12.29 Days
Continuous
29EDD-1 T2 (29EDD-1 Millennium) BP-29EDD-1 - TA - T2 OLTC Maintenance and Testing; 29EDD-1 T2 72LV Arrester replacement (CG)
300199837, 300203566
 
ATCO 05-May-25 09:00 06-May-25 15:00 30 Hours
Continuous
755s 901 (755s Cordel) BREAKER 901 SF6 GL315 COMPLETE TESTING @ 755S Cordel  
ATCO 07-May-25 09:00 08-May-25 15:00 30 Hours
Continuous
755s 902 (755s Cordel) BREAKER 902 SF6 GL315 COMPLETE TESTING @ 755S Cordel  
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, ALTALINK 06-Jul-25 08:00 08-Jul-25 17:00 2.38 Days
Continuous
7L701D1 (7LA701 tap), 701L (223s Strome - 7LA701 tap) Install interphase spacers  
ATCO 24-Jul-25 10:00 24-Jul-25 17:00 7 Hours
Continuous
7L65 (710s Vermilion - 7LA65 tap), 710s 703 (710s Vermilion) Relocate breaker 703 controls to a new smaller mounting plate and commission. Create additional room to install the new 7L129 protection relays into the existing panel 7P1.  
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 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 08-Dec-25 13:00 11-Dec-25 15:00 3.08 Days
Continuous
7L89 (721s La Corey - 826s Marguerite Lake) Line to ground clearance mitigation spans 202-203; 209-210; 216-217-218; 217-218; 221-222-223-224; 255-256; 313-314-315  
ATCO 15-Dec-25 13:00 18-Dec-25 15:00 3.08 Days
Continuous
7L89 (721s La Corey - 826s Marguerite Lake) Line to ground clearance mitigation spans 202-203; 209-210; 216-217-218; 217-218; 221-222-223-224; 255-256; 313-314-315  
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
 
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
 

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: 2024-09-18   14:44:15


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