Alberta Electric System Operator
System Co-ordination Plan
2025-09-11 to 2025-09-19
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
26-Jul-24 10:00 31-Jul-26 16:00 ATCO Outage 826s 504R (826s Marguerite Lake) emergency removal to replace failed 502R @834S 735.25 Days
Continuous		  
23-Aug-24 13:45 30-Jun-26 14:29 ALTALINK Outage 157s C1 (157s Lac La Biche) forced outage 676.03 Days
Continuous		  
10-Feb-25 00:00 23-Dec-25 23:00 ATCO, ALTALINK IO 840s McNeill Station, 830L (562s Cypress - 840s McNeill Station), 840s 701T (840s McNeill Station), 840s 901T (840s McNeill Station) available for emergency use only 316.96 Days
Continuous		 AB-SK
11-Mar-25 00:00 31-Dec-25 16:00 ALTALINK Outage 377s 473C (377s AML Hardisty) forced outage 295.71 Days
Continuous		  
18-Mar-25 14:00 17-Mar-26 17:30 ALTALINK Outage 217s C1 (217s North Red Deer) cap. bank unavailable and cannot be energized due to Koncar CTs being present 364.15 Days
Daily		  
20-Mar-25 08:00 20-Mar-26 17:00 ALTALINK Outage 256s C1 (256s Harmattan) forced outage 365.38 Days
Continuous		  
31-Mar-25 07:00 03-Oct-25 17:00 EPCOR Outage 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) Cloverbar - TX1 LCR 186.42 Days
Continuous		  
31-Mar-25 07:00 19-Dec-25 17:00 EPCOR TE Protection & Control (Woodcroft) Woodcroft: protection blocking for merging unit and protection upgrade. 263.46 Days
Continuous		  
14-May-25 08:00 10-Feb-26 16:00 ENMAX TE Protection & Control (SS-32) 32sub 138kV autoswitching protection outage 272.38 Days
Continuous		  
08-Jun-25 15:00 25-Nov-25 15:30 ALTALINK Outage 397s 864W (397s Benbow) new 864L line construction, new 397s48 (VT6) install 170.06 Days
Continuous		  
13-Jun-25 17:00 11-Feb-26 17:00 EPCOR Outage T3 (Rossdale) Rossdale - TX3 LCR 243.04 Days
Continuous		  
07-Jul-25 08:00 19-Sep-25 16:00 ENMAX Outage 21.1TR (SS-21) 21.1TR replacement 74.33 Days
Continuous		  
12-Jul-25 08:00 18-Sep-25 16:00 ENMAX Outage 14.1C (SS-14), 14.2C (SS-14) capacitor bank switcher replacement 68.33 Days
Continuous		  
14-Jul-25 08:00 27-Sep-25 17:00 ALTALINK TE 294s RTU/SCADA (294s Brazeau Outletworks) RTU database updates 75.38 Days
Daily		  
16-Jul-25 07:00 19-Sep-25 17:00 NWE Outage 2366 (NWE Marias) install new equipment at Marias 65.42 Days
Continuous		 AB-MATL
21-Jul-25 09:00 19-Jan-26 17:00 ATCO TE 732s Protection & Control (732s Mitsue) the breaker fail protection will be disabled during the project, as we migrate from the existing to the new protection 182.38 Days
Continuous		  
21-Jul-25 09:00 23-Jan-26 16:30 ATCO TE 732s RTU/SCADA (732s Mitsue) existing RTU system being replaced with new SMP system 186.35 Days
Continuous		  
22-Jul-25 08:30 31-Dec-25 16:30 ALTALINK Outage 263s C1 (263s Strachan) forced outage 162.38 Days
Continuous		  
25-Jul-25 17:01 01-Nov-25 17:00 EPCOR Outage T2 (EP Riverview) bushing test failure (found during OE110184) 99 Days
Continuous		  
29-Jul-25 08:00 25-Sep-25 17:00 ALTALINK, TRANSALTA Outage 33s 2 (33s Spray), 33s T2 (33s Spray) maintenance 58.38 Days
Continuous		  
02-Aug-25 23:30 12-Sep-25 18:00 ATCO Outage 827s SVC (827s Cranberry Lake) forced outage 40.77 Days
Continuous		  
14-Aug-25 14:00 15-Sep-25 08:30 ALTALINK Outage 33s 3 (33s Spray) condition assessment 31.77 Days
Continuous		  
18-Aug-25 07:00 17-Oct-25 17:00 EPCOR Outage T2 (Garneau), GT2 (Garneau) garneau S/S Tx2 bay outage, repair w/vendor 60.42 Days
Continuous		  
18-Aug-25 07:00 21-Nov-25 17:00 EPCOR TE 805s Protection & Control (805s Jasper) protection blocking for P&C maintenance 95.46 Days
Continuous		  
18-Aug-25 08:00 11-Sep-25 17:00 ALTALINK, TRANSALTA Outage 84L (33s Spray - 35s Rundle Plant), 85L (35s Rundle Plant - 54L tap), 64L (36s Three Sisters Plant - 35s Rundle Plant), 35s T1 (35s Rundle Plant), 35s T2 (35s Rundle Plant), 35s T3 (35s Rundle Plant), 36s T1 (36s Three Sisters Plant), 33s 84 (33s Spray), 35s 84 (35s Rundle Plant), 35s 85 (35s Rundle Plant), 35s 1 (35s Rundle Plant), 35s 52 (35s Rundle Plant), 35s 64 (35s Rundle Plant), 35s 2 (35s Rundle Plant), 35s 3 (35s Rundle Plant), 35s 4 (35s Rundle Plant), 35s 41 (35s Rundle Plant), 35s 8 (35s Rundle Plant), 35s 9 (35s Rundle Plant), 36s 64L42 (36s Three Sisters Plant), 36s 2600S1 (36s Three Sisters Plant), 36s 345S1 (36s Three Sisters Plant), 36s 1 (36s Three Sisters Plant) maintenance 24.38 Days
Continuous		  
20-Aug-25 17:00 15-Oct-25 17:00 ALTALINK Outage 931L (28s West Brooks - 132s Ware Junction), 28s 931N (28s West Brooks) Restoration from real time storm 56 Days
Continuous		  
20-Aug-25 17:00 15-Oct-25 17:00 ALTALINK Outage 1075L (28s West Brooks - 132s Ware Junction) restoration from real time storm 56 Days
Continuous		  
25-Aug-25 08:00 26-Sep-25 16:00 ENMAX Outage 32.1TR (SS-32) slip over CT and new power cables installation and P&C works 32.33 Days
Continuous		  
25-Aug-25 09:00 20-Nov-25 17:00 ATCO TE 710s Protection & Control (710s Vermilion) protection and hardwired IO on-site will need to be cut-over to the new SCADA system and tested 87.38 Days
Continuous		  
26-Aug-25 08:00 27-Sep-25 17:00 ALTALINK Outage 294s T1 (294s Brazeau Outlet Works), 294s 1 (294s Brazeau Outlet Works), 294s 2 (294s Brazeau Outlet Works), 294s 24 (294s Brazeau Outlet Works) replace T1 and associated protections 32.38 Days
Continuous		  
28-Aug-25 08:00 16-Sep-25 20:00 SUNCOR Outage 29PL9-24 (29EDD-94 Voyageur - 29EDD-60 Inglis Island), 29EDD-60 29PT-702 (29EDD-60 Inglis Island), 29EDD-60 30-252-400001 (29EDD-60 Inglis Island) 29pt-702 - repair / replace burned bonding conductor (9000807989) 19.5 Days
Continuous		  
31-Aug-25 08:56 15-Sep-25 17:00 ATCO TE 732s Protection & Control (732s Mitsue) 902T protections will be blocked to prevent tripping 901, 906, 704 and 705, which will be in service 15.34 Days
Continuous		  
01-Sep-25 08:00 25-Sep-25 16:00 ENMAX Outage 39.2TR (SS-39) secondary cable replacement 24.33 Days
Continuous		  
01-Sep-25 14:01 15-Sep-25 14:00 ATCO Outage 732s 902T (732s Mitsue), 732s 503R (732s Mitsue) protection upgrade 14 Days
Continuous		  
01-Sep-25 16:00 12-Sep-25 20:00 SUNCOR Outage 29EDD-71 29PT-235 (29EDD-71), 29EDD-71 752-4642 (29EDD-71), 29EDD-71 752-4641 (29EDD-71), 29EDD-71 29PS-263 (29EDD-71 Edd71Sub) 29PT-235 tap changer repairs 11.17 Days
Continuous		  
02-Sep-25 07:00 14-Sep-25 17:00 EPCOR Outage EP 803s T2 (EP 803s Lambton), EP 803s L2402 (EP 803s Lambton), EP 803s L2405 (EP 803s Lambton), EP 803s LAB2 (EP 803s Lambton) lambton: lab2 lcr and tx2 zone doble and lds4/lds9 disconnect maintenance 12.42 Days
Continuous		  
02-Sep-25 07:00 12-Oct-25 17:00 EPCOR Outage 557s T2 (557s Castle Downs) transformer bay outage 40.42 Days
Continuous		  
02-Sep-25 07:00 26-Sep-25 17:00 EPCOR Outage 805s T1 (805s Jasper) jasper: tx1 bushing replacement (pcb) 24.42 Days
Continuous		  
02-Sep-25 07:00 26-Sep-25 17:00 EPCOR Outage 72JW19 (EP 805s Jasper - Woodcroft), W721 (Woodcroft), EP 805s J724 (EP 805s Jasper), EP 805s JDS28 (EP 805s Jasper) jw19: ofpt degass maintenance (ugt) 24.42 Days
Continuous		  
02-Sep-25 07:30 12-Sep-25 16:00 ALTALINK Outage 1325L (510s Sunnybrook - AML 511s Crossings), AML 511s T11 (AML 511s Crossings), 510s T11 (510s Sunnybrook), AML 511s 4852 (AML 511s Crossings), AML 511s 4952 (AML 511s Crossings), 510s 2652 (510s Sunnybrook), 510s 2752 (510s Sunnybrook), AML 511s 1489 (AML 511s Crossings), AML 511s 74 (AML 511s Crossings), AML 511s 76 (AML 511s Crossings), 510s 41 (510s Sunnybrook), 510s 43 (510s Sunnybrook), 510s 4289 (510s Sunnybrook) repair and maintenance 10.35 Days
Continuous		  
02-Sep-25 08:00 26-Sep-25 16:00 ENMAX Outage 38.1C (SS-38) capacitor bank switcher replacement 24.33 Days
Continuous		  
03-Sep-25 08:00 11-Sep-25 16:00 ENMAX Outage 16.61L (SS-16 - SS-27), 16B69-16.61 (SS-16) HV breaker maintenance  8.33 Days
Continuous		  
03-Sep-25 09:00 11-Sep-25 08:00 ATCO Outage 951S 907 (951s Thickwood Hills) installation of new POW relay/protection 7.96 Days
Continuous		  
04-Sep-25 07:00 22-Sep-25 19:30 ALTALINK RB 784AL (482s Haynes - 784L tap), 784L (332s Ellis - 784AL tap), 784L (535s Joffre - 784AL tap) stringing new CETO lines over top 18.52 Days
Daily		  
04-Sep-25 07:15 12-Sep-25 17:45 ALTALINK Outage 712L (99s North St. Albert - 595s Spruce Grove), 99s 712X (99s North St. Albert), 595s 712 (595s Spruce Grove) replace str, install new structures, and mod OHSW str 205 8.44 Days
Continuous		  
05-Sep-25 08:00 07-Nov-25 16:00 ENMAX Outage 1.83L (SS-1 - SS-8) 1 sub Transmission line cut over. Line will terminate at new 1 sub upon return to service. 63.38 Days
Continuous		  
05-Sep-25 08:00 07-Nov-25 16:00 ENMAX Outage 1.85L (SS-1 - SS-8) 1 sub transmission line cut over. line will terminate at new 1 sub upon return to service. 63.38 Days
Continuous		  
05-Sep-25 13:00 12-Sep-25 14:00 ALTALINK Outage 184s T1 (184s Petro-Canada Edmonton) customer switchgear, bus duct, and NGR inspection 7.04 Days
Continuous		  
08-Sep-25 07:00 13-Sep-25 17:00 EPCOR, ALTALINK Outage 657s T2 (657s Summerside), 657s SU2402 (657s Summerside), 657s SU2403 (657s Summerside), 657s SUAB2 (657s Summerside) doble and disconnect maintenance 5.42 Days
Continuous		  
08-Sep-25 07:00 19-Sep-25 17:00 EPCOR RB 711L (113s Inland Cement - 747L tap) washing program 11.42 Days
Continuous		  
08-Sep-25 07:00 19-Sep-25 17:00 ALTALINK RB 747L (37s North Calder - 711L tap), 747L (99s North St. Albert - 711L tap) washing program 11.42 Days
Continuous		  
08-Sep-25 07:00 12-Sep-25 17:00 ALTALINK, EPCOR Outage 947L (89s Ellerslie - 987s Clover Bar), 987s C2402 (987s Clover Bar), 987s C2404 (987s Clover Bar), 987s CDS28 (987s Cloverbar) 947L zone doble and CDS27/CDS28/CDS29 disconnect maintenance 4.42 Days
Continuous		  
08-Sep-25 07:00 11-Sep-25 17:00 ALTALINK TE 17s RTU/SCADA (17s Benalto) RTU configuration update 3.42 Days
Daily		  
08-Sep-25 07:00 11-Sep-25 17:00 ALTALINK TE 297s RTU/SCADA (297s Rimbey) RTU configuration update 3.42 Days
Daily		  
08-Sep-25 07:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) 14PT138-Z31 secondary outage, relocate secondary wiring to new panel, 14.1TR transformer protection replacement 10.38 Days
Daily		  
08-Sep-25 07:00 17-Sep-25 16:00 ENMAX Outage 14.1TR (SS-14) transformer protection replacement 9.38 Days
Continuous		  
08-Sep-25 07:00 14-Sep-25 19:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) complete construction activities on CETO project adjacent to 9L20 6.5 Days
Continuous		  
08-Sep-25 07:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) 14sub 138kV 87 bus diff Z31protection outage, 14.1TR transformer protection replacement 10.38 Days
Daily		  
08-Sep-25 07:00 12-Sep-25 17:00 ALTALINK TE 28s RTU/SCADA (28s West Brooks) SCADA updates for emergency 931N switch replacement 4.42 Days
Daily		  
08-Sep-25 08:00 17-Sep-25 13:00 ALTALINK Outage 204s T1 (204s Sandypoint) relay setting changes and maintenance and temp gauge replacement 9.21 Days
Continuous		  
08-Sep-25 08:00 15-Sep-25 17:00 ATCO TE 732s Protection & Control (732s Mitsue) block 144 kV bus protection for Scada cutover 7.38 Days
Continuous		  
08-Sep-25 08:00 12-Sep-25 17:00 ALTALINK TE 347s RTU/SCADA (347s Fox Creek) update config for telecom rack move 4.38 Days
Daily		  
08-Sep-25 08:00 12-Sep-25 17:00 ALTALINK TE 347s Protection & Control (347s Fox Creek) protection outages on A87/138B & B87/138B for DC rack relocation 4.38 Days
Daily		  
08-Sep-25 08:00 11-Sep-25 16:00 ENMAX Outage 8.3TR (SS-8) transformer maintenance and power factor test, secondary cable and relay fault pressure test, reversing switch check 3.33 Days
Continuous		  
08-Sep-25 08:00 11-Sep-25 17:00 ALTALINK TE 799s RTU/SCADA (799s Coleman) deficiency clean up associated with new T3 and associated protection upgrade 3.38 Days
Daily		  
08-Sep-25 09:00 18-Sep-25 17:00 BCH IO 5L92 (BCH Cranbrook - BCH Selkirk) replace insulators and spacers 10.33 Days
Continuous		 AB-BC
08-Sep-25 09:00 18-Sep-25 17:00 BCH Outage 5L92 (BCH Cranbrook - BCH Selkirk), T3 (BCH Cranbrook) insulator replacement project step 5 10.33 Days
Continuous		 AB-BC
08-Sep-25 09:30 12-Sep-25 17:00 ALTALINK, EPCOR IO 947L (89s Ellerslie - 987s Clover Bar) Cloverbar - 947L zone doble and CDS27/CDS28/CDS29 disconnect maintenance 4.31 Days
Continuous		  
08-Sep-25 10:00 19-Sep-25 17:30 ATCO Outage 740s 703T (740s H.R.Milner), 740s 507C (740s H.R.Milner), 740s 703 (740s H.R. Milner), 740s 503 (740s H.R. Milner) relay test switch mitigation and replacement, monitoring devices settings updates, relay testing 11.31 Days
Continuous		  
08-Sep-25 10:00 19-Sep-25 17:30 ATCO TE 740s RTU/SCADA (740s H.R.Milner), 740s Protection & Control (740s H.R.Milner) RTU upgrades 11.31 Days
Continuous		  
08-Sep-25 10:30 11-Sep-25 15:00 ATCO TE 710s Protection & Control (710s Vermilion) test existing 7L130 relays, 703T relays, and 703T ION to new SCADA system 3.19 Days
Continuous		  
08-Sep-25 13:30 11-Sep-25 16:30 ALTALINK IO 931L (28s West Brooks - 132s Ware Junction), 28s 931N (28s West Brooks) replace switch 28s931N 3.13 Days
Continuous		  
08-Sep-25 14:00 03-Oct-25 17:30 ATCO TE 840s RTU/SCADA (840s McNeill Station) pull cables or prep prior to the outage, valve cooling system improvements, server replacement, valve hall camera install, fire system inspections 25.15 Days
Continuous		  
09-Sep-25 07:00 22-Sep-25 19:30 ALTALINK RB 775L (276s Prentiss - 535s Joffre) stringing overtop 775L str 94-95 with the new CETO 962L/986L spans 56-57 13.52 Days
Daily		  
09-Sep-25 07:00 22-Sep-25 19:30 ALTALINK RB 793L (87s Gaetz - 535s Joffre) stringing near 793L str 65-67 with the new CETO 962L/986L spans 56-57 13.52 Days
Daily		  
09-Sep-25 08:00 12-Sep-25 17:00 ATCO TE 879s Protection & Control (879s Scotford Upgrader) isolating the main relays to test the associated aux relays that can send trips to shells 52-1A 3.38 Days
Continuous		  
09-Sep-25 08:00 18-Sep-25 14:00 ATCO, ALBIAN Outage 9LJH2 (919s Hartley - 920s Jackpine), 920s 902T (920s Jackpine), 920s 902 (920s Jackpine), 920s B1 (920s Jackpine), 919s 907 (919s Hartley), 920s 9LJH-2D2 (920s Jackpine) request from CNRL
carry out the repairs on 72 kV cables connected to 902T		 9.25 Days
Continuous		  
09-Sep-25 08:00 12-Sep-25 17:00 ATCO Outage 879s 701T (879s Scottford Upgrader) 52-1A taken out for work related to 1-00494256 3.38 Days
Continuous		  
09-Sep-25 23:00 11-Sep-25 07:00 ALTALINK, TRANSALTA Outage 250p T2 (250p Bighorn Plant) maintenance 1.33 Days
Continuous		  
10-Sep-25 07:00 11-Sep-25 07:00 ALTALINK, TRANSALTA Outage 250p T1 (250p Bighorn Plant) maintenance 24 Hours
Continuous		  
10-Sep-25 08:00 11-Sep-25 17:00 Lethbridge, ALTALINK Outage 146s 667 (146s Macdonald), 667L (146s MacDonald - 370s North Lethbridge) cutover SCADA points from SURVALENT scout to SEL RTAC 1.38 Days
Continuous		  
10-Sep-25 08:00 11-Sep-25 17:00 ALTALINK, Lethbridge IO 667L (146s MacDonald - 370s North Lethbridge) cutover SCADA points from SURVALENT Scout to SEL RTAC 1.38 Days
Continuous		  
10-Sep-25 09:00 11-Sep-25 09:00 ATCO Outage 881s 701T (881s Sturgeon) maintenance 24 Hours
Continuous		  
11-Sep-25 07:00 11-Sep-25 17:00 ALTALINK RB 860L (44s Bearspaw Plant - 291s Cochrane) prep work in proximity to 860L str 50-58 10 Hours
Daily		  
11-Sep-25 08:01 11-Sep-25 13:00 ATCO Outage 951s 240kV 900BS1 (951s Thickwood Hills), 951s 1201T (951s Thickwood Hills), 951s 920C (951s Thickwood), 951S 901 (951s Thickwood Hills), 951S 904 (951s Thickwood Hills), 951S 907 (951s Thickwood Hills), 951s 910 (951s Thickwood Hills), 951s 901TA (951s Thickwood Hills) 900bs1 outage for commissioning pow project 4.98 Hours
Continuous		  
11-Sep-25 08:45 11-Sep-25 09:00 ATCO Outage 7L01 (813s Little Smoky - 881s Sturgeon 2) this will require 7L01 to be de-energized for 10-15mins while 881s 701TD is closed 15 Mins
Continuous		  
11-Sep-25 09:00 11-Sep-25 13:00 ATCO Outage 12L44 (939s Livock - 951s Thickwood Hills), 939s 1214R (939s Livock), 939s 1207 (939s Livock), 951s 1213R (951s Thickwood HIlls), 951s 1205 (951s Thickwood Hills), 951s 1206 (951s Thickwood Hills), 951s 1205B (951s Thickwood Hills), 951s 1206A (951s Thickwood Hills), 951s 12L44D1 (951s Thickwood Hills) 500 kV bus inspection 4 Hours
Continuous		  
11-Sep-25 09:00 11-Sep-25 17:00 ATCO Outage 700s 707C (700s Bonnyville) replace incorrect RTXP switches 8 Hours
Continuous		  
11-Sep-25 13:00 12-Sep-25 14:00 ATCO IO 951s 1201T (951s Thickwood Hills) energizing 1201T and the system through 907 & 1205 breakers with new pow relays 25 Hours
Continuous		  
11-Sep-25 13:01 12-Sep-25 14:00 ATCO Outage 951s 240kV 900BS1 (951s Thickwood Hills), 951s 1201T (951s Thickwood Hills), 951S 907 (951s Thickwood Hills), 951S 904 (951s Thickwood Hills), 951s 910 (951s Thickwood Hills), 951S 901 (951s Thickwood Hills), 951s 1205 (951s Thickwood Hills), 951s 1206 (951s Thickwood Hills), 951s 1201TA (951s Thickwood Hills), 951s 901TA (951s Thickwood Hills) proof of concept commissioning. energizing 1201T and the system through 907 & 1205 breakers with new pow relays
breakers will be opened/closed through out testing		 24.98 Hours
Continuous		  
12-Sep-25 06:00 20-Sep-25 18:00 ALTALINK Outage 860L (44s Bearspaw Plant - 291s Cochrane), 291s 860 (291s Cochrane), 44s 860W (44s Bearspaw Plant) reroute str 51-58 8.5 Days
Continuous		  
12-Sep-25 07:00 24-Sep-25 08:00 ALTALINK Outage 185s T1 (185s Bretville) NGR maintenance, T1 meter replacement.,T1 doble 12.04 Days
Continuous		  
12-Sep-25 08:00 07-Oct-25 16:00 ENMAX Outage 33.1TR (SS-33) tap changer refurbishments. soak test required 25.33 Days
Continuous		  
12-Sep-25 08:00 12-Sep-25 18:00 ENMAX Outage 11.82L (SS-11 - SS-14), 14.1TR (SS-14), 14.3TR (SS-14), 14.1C (SS-14), 14.2C (SS-14), 14B138-11.82 (SS-14), 14MD138-14.1TR (SS-14), 14MD138-14.3TR (SS-14), 11B138-11.82 (SS-11) substation - insulator washing, hot spot repair SW82, SW83. reversing switch check - 14.1-TC, 14.3-TC, remove overhead shield wire for corrosion testing 10 Hours
Continuous		  
12-Sep-25 08:00 12-Sep-25 12:00 ATCO Outage 7L06 (784s Donnelly - 787s High Prairie), 787s 705 (787s High Prairie) mobile substation install at 784s 4 Hours
Continuous		  
12-Sep-25 08:00 12-Sep-25 09:00 ALTALINK TE AltaLink Telecom Equipment NOC needs to change the quality of service (QOS) for configuration alignment remotely 60 Mins
Daily		  
12-Sep-25 09:00 17-Sep-25 17:00 BCH Outage 2L113 (BCH Cranbrook - BCH Natal), 2D23 (BCH Cranbrook), 2D21 (BCH Natal) NTL station rebuild 5.33 Days
Continuous		 AB-BC
12-Sep-25 09:00 12-Sep-25 17:00 ALTALINK Outage 199s T2 (199s East Airdrie) replace T2 LTC controller 8 Hours
Daily		  
12-Sep-25 13:00 26-Sep-25 17:00 BCH Outage T4 (BCH Natal) Natal substation replacement and ETM install 14.17 Days
Continuous		 AB-BC
13-Sep-25 07:00 15-Sep-25 10:00 EPCOR Outage 987s GT1 (987s Clover Bar) maintenance 2.13 Days
Continuous		  
13-Sep-25 08:00 13-Sep-25 12:00 ENMAX Outage 37.81L (SS-37 - SS-38), 38.2TR (SS-38), 38.3TR (SS-38), 38.1C (SS-38), 37B138-37.81 (SS-37), 38B138-37.81 (SS-38) fall substation insulator washing 4 Hours
Continuous		  
13-Sep-25 08:00 13-Sep-25 16:00 EPCOR TE RTU/SCADA (Rossdale) RTU repair 8 Hours
Continuous		  
13-Sep-25 08:00 13-Sep-25 13:00 ALTALINK Outage 38s T1 (38s East Edmonton) Extend 38sT1 CT wiring to DDR. Must be done to meet PRC002 compliance 5 Hours
Daily		  
13-Sep-25 08:00 23-Sep-25 16:00 Syncrude Outage G20 (Aurora), T3 (Aurora), 89-15 (Aurora) replace bushing and test transformer T3 in G02 substation 10.33 Days
Continuous		  
13-Sep-25 12:00 13-Sep-25 18:00 ENMAX Outage 38.83L (SS-38 - SS-39), 38.1TR (SS-38), 38.3TR (SS-38), 38.1C (SS-38), 39B138-38.83 (SS-39), 38B138-38.83 (SS-38) fall substation insulator washing 6 Hours
Continuous		  
13-Sep-25 13:30 13-Sep-25 18:00 ALTALINK Outage 38s T4 (38s East Edmonton) Extend 38sT1 CT wiring to DDR. Must be done to meet PRC002 compliance 4.5 Hours
Daily		  
14-Sep-25 08:00 14-Sep-25 12:00 ENMAX Outage 24.81L (SS-24 - SS-31), 31.84L (SS-31 - SS-32), 31.3TR (SS-31), 31.2TR (SS-31), 24B138-24.81 (SS-24), 32B138-31.84 (SS-32), 31B138-31.84 (SS-31), 31B138-24.81 (SS-31) Fall substation insulator washing 4 Hours
Continuous		  
14-Sep-25 08:30 14-Sep-25 18:30 ALTALINK Outage 89s T2 (89s Ellerslie) PRC005 testing of GDRs, gas detector replacement on 1 phase, testing of sudden pressure relief devices. 10 Hours
Daily		  
14-Sep-25 12:00 14-Sep-25 18:00 ENMAX Outage 9.80L (SS-9 - SS-31), 31.1TR (SS-31), 31.2TR (SS-31), 31.1C (SS-31), 31B138-9.80 (SS-31), 9B138-9.80 (SS-9) fall substation insulator washing 6 Hours
Continuous		  
15-Sep-25 07:00 19-Sep-25 17:00 EPCOR Outage EP 511s Victoria T1 (EP 511s Victoria), EP 511s V721 (EP 511s Victoria), EP 511s V722 (EP 511s Victoria) Victoria - TX1 zone (V721 PT) LCR 4.42 Days
Continuous		  
15-Sep-25 07:00 16-Sep-25 17:00 ALTALINK RB 1201L (520s Bennett - BCH Cranbrook) prepping the component replacement project from 1201L21 – 1201L435 1.42 Days
Daily		  
15-Sep-25 07:00 18-Sep-25 17:00 ALTALINK TE 17s RTU/SCADA (17s Benalto) RTU configuration update 3.42 Days
Daily		  
15-Sep-25 07:00 18-Sep-25 17:00 ALTALINK TE 297s RTU/SCADA (297s Rimbey) RTU configuration update 3.42 Days
Daily		  
15-Sep-25 07:00 15-Sep-25 17:00 ENMAX RB 40.81L (SS-40 - SS-41) fall transmission line washing 10 Hours
Continuous		  
15-Sep-25 07:00 15-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) tranformer protection replacement 9 Hours
Daily		  
15-Sep-25 07:00 16-Sep-25 17:00 EPCOR Outage 52s T2 (52s East Industrial), 52s E2402 (52s East Industrial) MV protection upgrade cutovers 1.42 Days
Continuous		  
15-Sep-25 07:00 20-Sep-25 17:00 EPCOR Outage 987s CCP7214 (987s Clover Bar), 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s C2401 (987s Clover Bar), 987s C2403 (987s Clover Bar), 987s C2402 (987s Clover Bar), 987s T3 (987s Clover Bar) cloverbar: TX1 and TX3 zone, Insulator stand install and CT removal 5.42 Days
Continuous		  
15-Sep-25 07:00 21-Sep-25 19:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) hold off on 9l20 to complete construction activities on CETO project adjacent to 9L20 6.5 Days
Continuous		  
15-Sep-25 07:00 15-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) 14.1TR transformer protection replacement 9 Hours
Daily		  
15-Sep-25 07:00 15-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) 14.1TR tranformer protection replacement 9 Hours
Daily		  
15-Sep-25 07:00 15-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) auto switch protection scheme outage for capacitor bank switcher replacement commissioning 9 Hours
Daily		  
15-Sep-25 07:30 18-Sep-25 18:30 ATCO, ALTALINK RB 530L (104s Watson Creek - 2085s Sheridan) climbing inspection 3.46 Days
Continuous		  
15-Sep-25 07:45 15-Sep-25 15:00 CMH Outage MHS-8 MH138-T81 (MHS-8 Burnside) Installing missing bracing for transformer MH138-T81 radiator at Burnside Substation. 7.25 Hours
Continuous		  
15-Sep-25 08:00 19-Sep-25 16:00 ALTALINK TE 297s Protection & Control (297s Rimbey) cutover and commission transfer trip to L9 feeder protection relay 4.33 Days
Daily		  
15-Sep-25 08:00 19-Sep-25 17:00 ALTALINK TE 297s Protection & Control (297s Rimbey) recommission circuits 4.38 Days
Daily		  
15-Sep-25 08:00 15-Sep-25 18:00 ALTALINK Outage 421s T1 (421s Hays) creating open point 'A' on 25kV bus 1 to accommodate 421s14 urgent switch replacement 10 Hours
Daily		  
15-Sep-25 08:00 26-Sep-25 17:00 ALTALINK TE 294s Protection & Control (294s Brazeau Outletworks) trip testing from new T2 protection 11.38 Days
Daily		  
15-Sep-25 08:00 20-Sep-25 16:00 SUNCOR TE 29PL6-22 (29EDD-1 Millennium - 29EDD-2 Tar Island) 29PL6-22 A87L GE L90 firmware upgrade - 300477551 5.33 Days
Continuous		  
15-Sep-25 08:00 18-Sep-25 18:00 ATCO, ALTALINK RB 6L530 (104s Watson Creek - 2085s Sheridan) climbing Inspection 3.42 Days
Continuous		  
15-Sep-25 08:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-8) 8 sub 138kV secondary PT-E1 X and Y core. 8 sub panel upgrades for 1 sub transmission cut over 3.33 Days
Daily		  
15-Sep-25 08:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-8) panel upgrades for 1 sub transmission cut over 3.33 Days
Daily		  
15-Sep-25 08:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-8) 8 sub 138kV secondary PT-E5 X and Y core 3.33 Days
Daily		  
15-Sep-25 08:30 20-Sep-25 14:00 ALTALINK Outage 184s T2 (184s Petro-Canada Edmonton) T2 doble, maintenance, leaks and customer switchgear, bus duct, and NGR inspection 5.23 Days
Continuous		  
15-Sep-25 09:00 19-Sep-25 17:00 ATCO Outage 729s 703T (729s Otauwau), 729s 703 (729s Otauwau) 703T major and 503VR major/tap changer 4.33 Days
Continuous		  
15-Sep-25 09:00 26-Sep-25 12:00 ATCO Outage 7L06 (784s Donnelly - ATC 793s West Peace River), 784s 701T (784s Donnelly), ATC 793s 703 (ATC 793s West Peace River), 784s 701 (784s Donnelly), 784s 7L06D2 (784s Donnelly) replace failed 7L06D2 mod 11.13 Days
Continuous		  
15-Sep-25 09:00 18-Sep-25 18:00 ALTALINK Outage 799L (235s Entwistle - 443s South Mayerthorpe), 235s 799N (235s Entwistle) 799L rebuild (str 830-858) 3.38 Days
Continuous		  
15-Sep-25 09:00 15-Sep-25 17:00 ALTALINK Outage 708L (233s Beamer - 708AL tap), 233s 708X (233s Beamer) update grounding connections 8 Hours
Daily		  
15-Sep-25 09:00 15-Sep-25 17:00 ATCO TE ATCO Telecom Equipment, 860s RTU/SCADA (860s Crow) crow telecom
SIPA phase out project
- replace old SIM card with IoT SIM and re-configure microhard modem with NSG		 8 Hours
Continuous		  
15-Sep-25 09:00 18-Sep-25 16:00 ATCO RB 7L20 (810s Dome Cutbank - 7L228 tap), 7L20 (740s H.R. Milner - 810s Dome Cutbank) installing overhead guy wire to support H Frame structure 52 3.29 Days
Continuous		  
15-Sep-25 09:00 15-Sep-25 12:00 ENMAX TE 7.84L (SS-7 - SS-36) transfer from JMUX to JPAX circuits 3 Hours
Continuous		  
15-Sep-25 09:30 21-Sep-25 17:00 EPCOR, ALTALINK Outage 665s D2403 (665s Dome), 909L (310p Sundance - 665s Dome), 665s D2402 (665s Dome), 665s T2 (665s Dome) dome: 909LW/TX2 doble and DDS4/DDS5/DAB2 disconnect maintenance and relay maintenance 6.31 Days
Continuous		  
15-Sep-25 09:30 21-Sep-25 17:00 ALTALINK, EPCOR Outage 909L (310p Sundance - 665s Dome) dome: 909LE/TX2 doble and DDS4/DDS5/DAB2 disconnect maintenance and relay maintenance 6.31 Days
Continuous		  
15-Sep-25 09:30 18-Sep-25 12:30 ALTALINK Outage 33s 1 (33s Spray) replacement 3.13 Days
Continuous		  
15-Sep-25 10:00 03-Oct-25 17:30 ATCO Outage 840s McNeill Station converter inspection @ mcneill 840s breaker sf6 hpl complete testing 18.31 Days
Continuous		 AB-SK
15-Sep-25 10:00 15-Sep-25 17:00 ATCO, NextEra, PWLP TE 114s RTU/SCADA (114s Ghost Pine), 973s RTU/SCADA (973s Lanes Lake), ATCO Telecom Equipment MDR 8000 radio link PM between Elnora_T and Ghospine_S 7 Hours
Continuous		  
15-Sep-25 10:30 26-Sep-25 12:00 ALTALINK, TRANSALTA Outage 33s T1 (33s Spray) testing 11.06 Days
Daily		  
15-Sep-25 12:00 18-Sep-25 16:00 ATCO Outage 860s 701T (860s Crow), 860s 301 (860s Crow) transformer class2 tap changer and major testing 3.17 Days
Continuous		  
15-Sep-25 13:00 18-Sep-25 15:00 ATCO RB 7L79 (771s Veteran - 932s Pemukan), 7L79 (771s Veteran - 892s Ribstone Creek) install frost mitigation inter-phase spacers (live line) 3.08 Days
Continuous		  
15-Sep-25 13:00 15-Sep-25 14:00 BCH Outage 2L112 (BPA Boundary - BCH Nelway) EMERGENCY REPLACEMENT OF A BOUNDARY PCB AND IN ORDER TO MOVE IT INTO LOCATION WE NEED TO CLEAR PCB A-1220 WHICH WILL OPEN END THE BOUNDARY-NELWAY NO 1 230KV LINE. 60 Mins
Continuous		 AB-BC
15-Sep-25 13:00 15-Sep-25 14:00 BCH Outage 2L112 (BPA Boundary - BCH Nelway) PROXIMITY WORK REMOVING OLD BREAKER ON TRAILER UNDER MAIN BUS SIDE OF PCB A-1220 60 Mins
Continuous		 AB-BC
15-Sep-25 13:00 15-Sep-25 16:00 ENMAX, ALTALINK TE 7.82L (42s Sarcee - SS-7) transfer from JMUX to JPAX circuits 3 Hours
Continuous		  
15-Sep-25 13:00 15-Sep-25 16:00 ENMAX, ALTALINK TE 7.82L (42s Sarcee - SS-7) 7.82L A and B line protection outage -transfer from JMUX to JPAX circuits 3 Hours
Daily		  
15-Sep-25 13:30 19-Sep-25 17:30 ALTALINK Outage 514L (513s Lundbreck - 514BL tap), 513s T1 (513s Lundbreck), 513s 1 (513s Lundbreck) 513s T1 PCB bushing replacement 4.17 Days
Continuous		  
15-Sep-25 14:01 29-Sep-25 14:00 ATCO Outage 7L30 (732s Mitsue - 844s AEC Mill), 732s 704 (732s Mitsue), 732s 707 (732s Mitsue), 844s 703 (844s AEC Mill), 732s 7L30D1 (732s Mitsue) protection upgrade - remove old protection, cut over to new protection and cut over equipment status, control and alarms to new station controller 14 Days
Continuous		  
15-Sep-25 15:00 18-Sep-25 15:00 ATCO Outage 7L53 (700s Bonnyville - 7LA53 tap), 700s 702 (700s Bonnyville) line to ground clearance mitigation for span 619-620, line to line clearance mitigation for span 702-703 3 Days
Continuous		  
15-Sep-25 18:00 18-Sep-25 17:00 ALTALINK Outage 421s T2 (421s Hays) Urgent replacement of 421s14 due to bird contact and switch contact cleaning of 421s18 due to maintenance identified hotspot. 2.96 Days
Continuous		  
16-Sep-25 07:00 17-Sep-25 18:00 ALTALINK, TRANSALTA Outage 514L (396s Pincher Creek - 514BL tap), 514L (513s Lundbreck - 514BL tap), 322s T1 (322s Cowley Ridge), 396s 514N (396s Pincher Creek) replacing structures 16 and 76 Replacing arms and insulators on structure 170 1.46 Days
Continuous		  
16-Sep-25 07:00 16-Sep-25 12:00 ENMAX Outage 14.3TR (SS-14) trip testing and transformer protection replacement 5 Hours
Continuous		  
16-Sep-25 07:00 18-Sep-25 17:00 ALTALINK TE 17s Protection & Control (17s Benalto) B & A protections implement and test temporary settings as part of September 17 17s757N outage 2.42 Days
Daily		  
16-Sep-25 07:00 18-Sep-25 17:00 ALTALINK TE 580s Protection & Control (580s Sylvan Lake) 637L B & A protections implement and test temporary settings on 637L line protection relays as part of september 17 17s757N outage to meet 17s SLD note 7 requirements 2.42 Days
Daily		  
16-Sep-25 07:00 16-Sep-25 17:00 ENMAX RB 31.84L (SS-31 - SS-32) fall transmission line washing 10 Hours
Continuous		  
16-Sep-25 07:00 16-Sep-25 09:00 ENMAX Outage 1.80L (SS-1 - SS-28) fall transmission line washing 2 Hours
Continuous		  
16-Sep-25 07:00 16-Sep-25 17:00 ALTALINK Outage 735L (171s Redwater - 233s Beamer), 171s 735X (171s Redwater), 233s 735N (233s Beamer) update 735L LA grounding connections 10 Hours
Daily		  
16-Sep-25 08:00 18-Sep-25 17:30 ALTALINK, Keyera Cynthia Outage 359s T2 (359s Esso West Pembina), 359s 202AX (359s Esso West Pembina), 359s 14 (359s Esso West Pembina) bushing replacement, doble, maintenance, leaks, LTC maintenance 2.4 Days
Continuous		  
16-Sep-25 08:00 16-Sep-25 12:00 ENMAX Outage 16.60L (SS-16 - SS-34), 34.2TR (SS-34), 34B69-16.60 (SS-34), 34MD69-34.2TR (SS-34) fall insulator washing, reversing switch check - 34.2-TC 4 Hours
Continuous		  
16-Sep-25 08:00 18-Sep-25 17:00 ALTALINK TE 368s Protection & Control (368s Burdett) PRC relay maintenance s879 96/752 oos less than 6 hours 2.38 Days
Daily		  
16-Sep-25 08:00 16-Sep-25 17:00 ALTALINK TE 12s RTU/SCADA (12s Heartland), AltaLink Telecom Equipment upgrade MPLS node 9 Hours
Daily		  
16-Sep-25 08:00 16-Sep-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 324s RTU/SCADA (324s Cassils) complete MPLS upgrade 9 Hours
Daily		  
16-Sep-25 08:00 16-Sep-25 17:00 ALTALINK, TRANSALTA TE 229s RTU/SCADA (229s Glenwood), 502s RTU/SCADA (502s Shell Waterton (#2)), AltaLink Telecom Equipment MPLS upgrade at 9232R 9 Hours
Daily		  
16-Sep-25 08:00 16-Sep-25 17:00 ALTALINK TE 454s Protection & Control (454s Buck Lake) standard relay maintenance 9 Hours
Daily		  
16-Sep-25 08:00 16-Sep-25 17:00 ALTALINK TE 281s Protection & Control (281s Johnson) relay maintenance 9 Hours
Daily		  
16-Sep-25 08:00 17-Sep-25 16:00 ATCO RB 7L228 (845s Big Mountain - 7L20 tap) high load move 1.33 Days
Continuous		  
16-Sep-25 09:00 19-Sep-25 17:00 BCH Outage 5L72 (BCH Mica G.S. - BCH Nicola) F26 AOP NERC CN PM on NIC 5CB3, 5CB13 and 5B43. CPC to enter PN's OOS OAT
3.33 Days
Continuous		  
16-Sep-25 09:00 16-Sep-25 11:00 ENMAX Outage 1.81L (SS-1 - SS-20) fall transmission line washing 2 Hours
Continuous		  
16-Sep-25 09:00 18-Sep-25 17:00 ALTALINK TE 368s RTU/SCADA (368s Burdett) techs will be cleaning up scada/cabling deficiencies from the lan es1 installation that was completed on June 11/12, 2025 2.33 Days
Daily		  
16-Sep-25 09:00 16-Sep-25 17:30 ALTALINK Outage 68s T2 (68s Willesden Green) first trip & PRC breaker maintenance 8.5 Hours
Daily		  
16-Sep-25 09:00 16-Sep-25 16:00 ATCO TE ATCO Telecom Equipment, 733s RTU/SCADA (733s Simonette) network firewall replace for low bes project 7 Hours
Continuous		  
16-Sep-25 09:00 16-Sep-25 17:00 ALTALINK TE 310p RTU/SCADA (310p Sundance) update configuration for remote access 8 Hours
Daily		  
16-Sep-25 09:00 16-Sep-25 12:00 ENMAX TE 2.84L (SS-2 - SS-8) transfer from JMUX to JPAX circuits 3 Hours
Continuous		  
16-Sep-25 10:00 16-Sep-25 17:00 ATCO TE ATCO Telecom Equipment, 802s RTU/SCADA (802s Michichi Creek) Radio Link PM Between Drumheller and Michichi 7 Hours
Continuous		  
16-Sep-25 10:30 18-Sep-25 17:30 ALTALINK Outage 478s T2 (478s Tucuman) transformer/LTC maint and sudden pressure relay repair 2.29 Days
Continuous		  
16-Sep-25 10:30 18-Sep-25 15:00 ATCO TE 710s Protection & Control (710s Vermilion) test existing 707C A & B relays as well as 707C Ion to new SCADA system 2.19 Days
Continuous		  
16-Sep-25 11:00 16-Sep-25 13:00 ENMAX Outage 9.83L (SS-9 - SS-43) Fall transmission line washing 2 Hours
Continuous		  
16-Sep-25 11:00 18-Sep-25 17:00 ALTALINK Outage 368s C1 (368s Burdett) cap bank protection PRC maintenance 2.25 Days
Continuous		  
16-Sep-25 12:00 16-Sep-25 18:00 ENMAX Outage 21.61L (SS-21 - SS-34), 34.1TR (SS-34), 34B69-21.61 (SS-34), 34MD69-34.1TR (SS-34) fall insulator washing, reversing switch check - 34.1-TC 6 Hours
Continuous		  
16-Sep-25 12:00 16-Sep-25 16:00 ENMAX Outage 14.4TR (SS-14) trip testing and tranformer protection replacement 4 Hours
Continuous		  
16-Sep-25 13:00 16-Sep-25 17:00 ENMAX Outage 33.84L (SS-33 - SS-43) Fall transmission line washing 4 Hours
Continuous		  
16-Sep-25 13:00 16-Sep-25 16:00 ENMAX TE 2.82L (SS-2 - SS-5) 2.82L A and B Line Protection Outage. Transfer from JMUX to JPAX circuits. Fault clearing time 26.5 cycles. 3 Hours
Continuous		  
17-Sep-25 06:00 17-Sep-25 17:00 ATCO IO ATCO RTU/SCADA SOC2 backup control centre activation
system operation will perform the failover to SOC2 Edmonton		 11 Hours
Continuous		  
17-Sep-25 07:00 17-Sep-25 17:00 ENMAX RB 11.82L (SS-11 - SS-14) fall transmission line washing 10 Hours
Continuous		  
17-Sep-25 07:30 18-Sep-25 18:30 ALTALINK, TAYLORPP Outage 256s 228X (256s Harmattan), 148s AG-EB25A (148s Schantz), 148s AG-EB510B (148s Schantz), 148s AG-EB510C (148s Schantz), 148s AG-EB510D (148s Schantz), 148s T1 (148s Schantz), 148s T2 (148s Schantz), 148s T3 (148s Schantz) LAN switch replacement 1.46 Days
Continuous		  
17-Sep-25 08:00 24-Sep-25 18:00 SUNCOR Outage 29PL7-4 (29EDD-65 - 29EDD-71), 29EDD-65 29PS-0284 (29EDD-65 Edd65Sub), 29EDD-71 29PS-243 (29EDD-71 Edd71Sub), 29EDD-65 29PT-0257 (29EDD-65) FB-Maintenance, Repairs and Testing - PRC-5 Testing, 29PT-260, 29PL7-4, 29PT-241, 29PT-257, 29PS-243 (300415541, 31807283, 31773784, 300109525) 7.42 Days
Continuous		  
17-Sep-25 08:00 17-Sep-25 16:00 ALTALINK TE 297s Protection & Control (297s Rimbey) replacement of the 17s breaker maintenance switch and installation of new protections at 297s 8 Hours
Daily		  
17-Sep-25 08:00 17-Sep-25 16:00 ALTALINK TE 17s Protection & Control (17s Benalto) 17s A77/1144AIS modify relay settings and commission new transfer trip to new customer 8 Hours
Daily		  
17-Sep-25 08:00 17-Sep-25 16:00 ENMAX Outage 9.3TR (SS-9), 2.81L (SS-2 - SS-9), 9.83L (SS-9 - SS-43), 9.2TR (SS-9) Substation - Insulator Washing (Fall), Shield wire corrosion testing 2.81L. Investigate 9.3TR gas alarm circuit. No grounding required for shield wire testing. 8 Hours
Continuous		  
17-Sep-25 08:00 18-Sep-25 18:00 ALTALINK TE AltaLink Telecom Equipment, 256s 228X (256s Harmattan) LAN switch replacement 1.42 Days
Continuous		  
17-Sep-25 08:00 17-Sep-25 17:00 ALTALINK TE AltaLink Telecom Equipment, 928s RTU/SCADA (928s East Stavely), 349s RTU/SCADA (349s Stavely) complete MPLS upgrade 9 Hours
Daily		  
17-Sep-25 08:00 17-Sep-25 17:00 ALTALINK TE 635s RTU/SCADA (635s Rose Valley), AltaLink Telecom Equipment, 310p Protection & Control (310p Sundance) upgrade MPLS node 9 Hours
Daily		  
17-Sep-25 08:00 17-Sep-25 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 330p MPLS node 9 Hours
Daily		  
17-Sep-25 08:00 17-Sep-25 17:00 ALTALINK TE 391s Protection & Control (391s Balzac) protection maintenance 9 Hours
Daily		  
17-Sep-25 08:30 17-Sep-25 14:00 ALTALINK Outage 17s 757N (17s Benalto) cutover 2052 breaker and maintenance switch status to new ‘B’ AIS relay . commission 757L lto 5.5 Hours
Daily		  
17-Sep-25 09:00 17-Sep-25 17:30 ALTALINK Outage 62s 31 (62s Brazeau Plant), 62s T3 (62s Brazeau Plant) 240kV breaker maintenance (n.o.) 8.5 Hours
Daily		  
17-Sep-25 09:00 17-Sep-25 12:00 ENMAX TE 26.81L (SS-26 - SS-32) 26.81L A and B Line Protection Outage. Transfer from JMUX to JPAX circuits. Fault clearing time 26.5 cycles. 3 Hours
Continuous		  
17-Sep-25 13:00 17-Sep-25 16:00 ENMAX TE 24.82L (SS-24 - SS-65) 24.82L A and B Line Protection Outage. Transfer from JMUX to JPAX circuits. Fault clearing time 26.5 cycles. 3 Hours
Continuous		  
18-Sep-25 07:00 18-Sep-25 16:00 ENMAX TE Protection & Control (SS-14) 14.1TR A and B and 14.1TR transformer protection replacement 9 Hours
Continuous		  
18-Sep-25 07:00 18-Sep-25 17:00 ENMAX RB 14.83L (SS-14 - SS-36) fall transmission line washing 10 Hours
Continuous		  
18-Sep-25 07:00 18-Sep-25 17:00 ENMAX RB 39.82L (SS-39 - SS-162) fall transmission line washing 10 Hours
Continuous		  
18-Sep-25 07:00 18-Sep-25 17:00 ENMAX RB 38.83L (SS-38 - SS-39) fall transmission line washing 10 Hours
Continuous		  
18-Sep-25 07:00 18-Sep-25 19:00 ATCO RB 9L16 (755s Cordel - 972s Tinchebray) install a new caisson foundation for Str 1 of the new CETO line being constructed 12 Hours
Continuous		  
18-Sep-25 08:00 18-Sep-25 16:00 ATCO TE 769s RTU/SCADA (769s Stettler), ATCO Telecom Equipment MDR8000 radio link major PM between Lonepine T and Stettler 8 Hours
Continuous		  
18-Sep-25 08:00 22-Sep-25 16:00 CNRL Outage 842s 75-1904 (842s Horizon Upgrading) breaker tank heater repair 4.33 Days
Continuous		  
18-Sep-25 08:00 05-Oct-25 20:00 SUNCOR Outage 29EDD-61 29PT-653 (29EDD-61 Stony Island), 29EDD-61 30-252-500001 (29EDD-61 Stony Island) 29PT-653 - Repair / Replace Burned Bonding Conductor (9000808061) 17.5 Days
Continuous		  
18-Sep-25 08:00 18-Sep-25 17:00 ALTALINK TE 349s RTU/SCADA (349s Stavely) Preform maintenance on 9269R 9 Hours
Daily		  
18-Sep-25 08:00 18-Sep-25 17:00 ALTALINK TE 245s Protection & Control (245s Seebe) on site settings changes 9 Hours
Daily		  
18-Sep-25 08:00 18-Sep-25 17:00 ALTALINK TE 291s Protection & Control (291s Cochrane) on site settings changes 9 Hours
Daily		  
18-Sep-25 08:00 18-Sep-25 12:00 ENMAX Outage 11.82L (SS-11 - SS-14), 14B138-11.82 (SS-14), 14.1TR (SS-14), 14.3TR (SS-14) Sub 14 Capacitor Bank Switcher Replacement. Bus outage required for initial energization on new 14B138-14.CAP. GOI on 14CAP (25N1050) to be released prior to outage. 4 Hours
Continuous		  
18-Sep-25 09:00 18-Sep-25 17:30 ALTALINK Outage 62s T5 (62s Brazeau Plant), 62s 207 (62s Brazeau Plant) Install Bushing monitoring devices 8.5 Hours
Daily		  
18-Sep-25 09:00 19-Sep-25 16:00 ATCO TE 848s Protection & Control (848s Ruth Lake) investigate soft control/ DNP mapping and test with SOC/ HMI to confirm the expected bits are being sent to/ from the relay 31 Hours
Continuous		  
18-Sep-25 09:00 18-Sep-25 12:00 ENMAX TE 41.84L (SS-41 - SS-54) 41.84L A and B Line Protection Outage. Transfer from JMUX to JPAX circuits. Fault clearing time 26.5 cycles. 3 Hours
Continuous		  
18-Sep-25 09:00 18-Sep-25 17:00 ALTALINK TE 325s Protection & Control (325s Leduc) standard relay maintenance 8 Hours
Daily		  
18-Sep-25 09:00 23-Sep-25 20:00 SUNCOR TE 29PL6-3 (29EDD-1 Millennium - 30EDD-1), 30EDD-1 627 (30EDD-1) 30EDD-1 29PL6-3 PRC5 Trip Path checks - 9000986658
29PL6-3 A87L GE L90 Firmware 8.6 - 300477554 		5.46 Days
Continuous		  
18-Sep-25 09:30 18-Sep-25 17:00 ALTALINK TE 62s RTU/SCADA (62s Brazeau Plant) RTU database update, ~15min supervisory outage required. Qualified switchman on site for the duration 7.5 Hours
Daily		  
18-Sep-25 12:00 18-Sep-25 16:00 ENMAX Outage 14.2TR (SS-14) trip testing and tranformer protection replacement 4 Hours
Continuous		  
18-Sep-25 12:00 18-Sep-25 16:00 ENMAX Trans Test 14.1C (SS-14), 14.2C (SS-14) testing cap bank switcher 4 Hours
Continuous		  
18-Sep-25 13:00 18-Sep-25 16:00 ENMAX TE 35.81L (42s Sarcee - SS-35) 35.81L A and B Line Protection Outage. Transfer from JMUX to JPAX circuits. Fault clearing time 26.5 cycles. 3 Hours
Continuous		  
18-Sep-25 17:00 19-Sep-25 18:00 ALTALINK Outage 421s T1 (421s Hays) closing open point 'A' on 25kV bus 1 25 Hours
Daily		  
19-Sep-25 07:00 28-Sep-25 17:00 ALTALINK Outage 1201L (520s Bennett - BCH Cranbrook) completing component replacement from 1201L21 – 1201L435 9.42 Days
Continuous		 AB-BC
19-Sep-25 07:00 28-Sep-25 17:00 ALTALINK Outage 786L (799s Coleman - BCH Natal), 799s 786W (799s Coleman) aligned with 1201L outage 9.42 Days
Continuous		 AB-BC
19-Sep-25 07:00 28-Sep-25 17:00 ALTALINK Outage 887L (48s Pocaterra - 978s BCH Britt Creek), 48s 887X (48s Pocaterra) aligned with 1201L outage 9.42 Days
Continuous		 AB-BC
19-Sep-25 07:00 28-Sep-25 17:00 BHE Canada Outage MATL (120s Picture Butte - Montana) align with 1201L outage 9.42 Days
Continuous		 AB-MATL
19-Sep-25 07:00 28-Sep-25 17:00 AESO Outage Path 1 (AIES Islanding) align with 1201L outage 9.42 Days
Continuous		 AB-BC
19-Sep-25 07:00 20-Sep-25 17:00 ENMAX, ALTALINK RB 1065L (74s Janet - 102s Langdon) fall transmission line washing 1.42 Days
Daily		  
19-Sep-25 07:00 20-Sep-25 17:00 ENMAX, ALTALINK RB 1064L (74s Janet - 102s Langdon) fall transmission line washing 1.42 Days
Daily		  
19-Sep-25 07:00 25-Sep-25 17:00 ALTALINK Outage 520s T1 (520s Bennett), 520s R7 (520s Bennett) south 520sT1 and R7 maintenance 6.42 Days
Continuous		 AB-BC
19-Sep-25 08:00 19-Sep-25 18:00 ENMAX Outage 11.81L (SS-11 - SS-13), 11.4TR (SS-11), 11.1TR (SS-11) Substation - Insulator Washing (Fall). SW83 - west phase - hard to seat in jaw. Reversing Switch Check - 11.4-TC, 11.1-TC, Oil Sampling 11.1-TC 10 Hours
Continuous		  
19-Sep-25 08:00 19-Sep-25 13:00 ALTALINK Outage 410s T1 (410s Josephburg) urgent extend 410sT1 CT wiring to DDR PRC002 compliance 5 Hours
Daily		  
19-Sep-25 09:00 08-Oct-25 17:00 ALTALINK TE 58s RTU/SCADA (58s Edson) update configuration for cap bank protection replacements 19.33 Days
Daily		  
19-Sep-25 09:30 08-Oct-25 18:00 ALTALINK Outage 58s C1 (58s Edson) replace 58s C1 and associated protections 19.35 Days
Continuous		  
19-Sep-25 13:00 19-Sep-25 18:00 ALTALINK Outage 410s T2 (410s Josephburg) Extend 410sT1 CT wiring to DDR. Must be done to meet PRC002 compliance 5 Hours
Daily		  

Prepared On:   2025-09-10   14:56:15

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