Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2019-06-22

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
Syncrude 04-Oct-18 09:00 15-Jan-20 20:00 468.5 Days
Continuous
Mildred T3 (Syncrude Mildred Lake) damaged transformer repairs  
ENMAX, ALTALINK 12-Mar-19 14:53 23-Jun-19 09:00 102.75 Days
Continuous
1080L (ENMAX 65 - ENMAX 25) forced outage due to field cable  
ALTALINK 01-Apr-19 10:00 17-Jul-19 17:00 107.29 Days
Continuous
251s SR1 (251s Whitla),251s 252 (251s Whitla),251s 552 (251s Whitla),251s Whitla 240kV Bus 1 construct new equipment  
ENMAX 08-May-19 08:00 23-Jun-19 18:00 46.42 Days
Continuous
ENMAX 25 B240-D133 (ENMAX 25),ENMAX 25 B240-D136 (ENMAX 25),ENMAX 25 B240-D142 (ENMAX 25),ENMAX 25 B240-D138 (ENMAX 25),ENMAX 25 B240-D139 (ENMAX 25),ENMAX 25 240kV North Bus urgent request to assist with the repairs to the faulted cable on 1080L  
BCH 14-May-19 09:00 24-Jul-19 17:00 71.33 Days
Continuous
5L71 (Mica Creek - Nicola) switchgear roof replacement project AB-BC
EPCOR 03-Jun-19 08:00 28-Jun-19 17:00 25.38 Days
Continuous
805s T3 (805s Jasper) bushing replacement  
Saskpower, ATCO, ALTALINK 05-Jun-19 08:00 02-Aug-19 16:00 58.33 Days
Continuous
9LS1M (840s McNeil - Swift Current),840S McNeill Station,830L (562s Cypress - 840s McNeill Station) protection upgrade AB-SK
ENMAX 15-Jun-19 08:00 23-Jun-19 18:00 8.42 Days
Continuous
ENMAX 65 138 kV South Bus,65.1TR (ENMAX 65),ENMAX 65 240kV South Bus doble test, maintenance and inspection  
EPCOR 17-Jun-19 07:00 23-Jun-19 17:00 6.42 Days
Continuous
330P GT1 (330p Genesee) relay maintenance  
ALTALINK 22-Jun-19 07:00 23-Jun-19 18:00 1.46 Days
Continuous
25KV bus GOI,138kV Bus,320p T1,320p T1 (320p Keephills) Replace 138 kV Bus PT, replace 25 kV Bus PT, replace metering on SS 1/2, T4 maintenance  
EPCOR, ALTALINK 22-Jun-19 07:00 27-Jun-19 17:00 5.42 Days
Continuous
1055L (629s Argyll Transfer - 816s Petrolia),1055L ( Argyll - Petrolia ) Washing program  
ATCO 24-Jun-19 08:00 28-Jun-19 17:00 4.38 Days
Continuous
9L59 (972s Tinchebray - 801s Anderson),9L59 9L59- GOI permit for Clearance Mitigation

6 more structures left to change for clearance Mitigation.
 
ENMAX 24-Jun-19 08:00 04-Jul-19 18:00 10.42 Days
Continuous
65.2TR (ENMAX 65),65.2TR. Doble test transformer. Transformer maint. Doble 65PT240-Z42. 65PT138-Z32. 65PT138-C4, 65PT240-C2. Check reversing Switch. Tapchanger inspection. Gas Relay. Oil sample MT, TC.Replace Manual Operation Knob. Substation washing  
ATCO 24-Jun-19 09:30 26-Jun-19 17:00 2.31 Days
Continuous
7L702 (137s Sedgewick - 757s Battle River),7L702 Change Arms and Insulators on 7L702  
ALTALINK 24-Jun-19 10:00 19-Jul-19 18:00 25.33 Days
Continuous
870L (262s - 263s) - GOI,870L (262s Rocky Mountain House - 263s Strachan) Component Replacements (Structure Range 9-153)  
ALTALINK 24-Jun-19 13:45 27-Jun-19 16:45 3.13 Days
Continuous
87s T2(TX18339) GOI,87s T2 (87s Gaetz) Emergency Work; oil condition is in question and requires inspection, CS mitigation, oil leak  
ALTALINK 26-Jun-19 11:00 26-Jun-19 15:00 4 Hours
Daily
250p11 (250p Bighorn Plant) maintenance  
ALTALINK 27-Jun-19 08:00 30-Jun-19 17:00 3.38 Days
Daily
1035L (244s - 2075s) Advice Trip testing of new Shamrock (1018s) RAS  
ALTALINK 27-Jun-19 09:00 27-Jun-19 13:00 4 Hours
Daily
250p22 (250p Bighorn Plant) maintenance  
ATCO 28-Jun-19 08:30 28-Jun-19 17:00 8.5 Hours
Continuous
7L794 (157s Lac La Biche - 819s Whitby Lake),7L794 Replace a damaged pole  
ALTALINK 01-Jul-19 07:30 01-Jul-19 12:00 4.5 Hours
Daily
244s 352 (244s Bowmanton),244s352 Advice Trip testing of new Shamrock (1018s) RAS  
SUNCOR 01-Jul-19 08:00 21-Jul-19 18:00 20.42 Days
Continuous
29EDD-1 Millennium 5 year maintenance  
SUNCOR 01-Jul-19 08:00 21-Jul-19 18:00 20.42 Days
Continuous
29EDD-3 29Edd-3 maintenance  
SUNCOR 01-Jul-19 09:00 21-Jul-19 18:00 20.38 Days
Continuous
30EDD-2 maintenance & testing on breaker  
ALTALINK 01-Jul-19 12:30 01-Jul-19 17:30 5 Hours
Daily
244s652 Advice,244s 652 (244s Bowmanton) Trip testing of new Shamrock (1018s) RAS  
EPCOR, ALTALINK 02-Jul-19 07:00 05-Jul-19 17:00 3.42 Days
Continuous
1044L (805s Jasper - 816s Petrolia),1044L Petrolia & Jasper Structure Refurbishment & Upgrades  
ALTALINK 02-Jul-19 08:30 03-Jul-19 12:30 28 Hours
Continuous
511s 1252 (511s Crossings),511s1252 (ACF11) GOI ACF Bank Maintenance and Vegetation Control  
ALTALINK 02-Jul-19 08:30 03-Jul-19 16:30 1.33 Days
Continuous
510s ACF13 GOI Annual Inspection  
ALTALINK 02-Jul-19 08:30 15-Jul-19 12:30 13.17 Days
Continuous
64s 138kV Bus and T2 (240/138kV) GOI,64s T2 (64s East Crossfield) Relocate VT2, Relocate 64s35 & Cut over New 111L Complete Install for T1 25kV cables  
ATCO 02-Jul-19 09:30 04-Jul-19 17:00 2.31 Days
Continuous
7L702,7L702 (137s Sedgewick - 757s Battle River) Change Arms and Insulators on 7L702  
ALTALINK 03-Jul-19 06:00 12-Jul-19 19:00 9.54 Days
Continuous
1212L (89s - 12s) - GOI,1212L (89s Ellerslie - 12s Heartland) Spacer and damper replacement on Structures # 4 - 191  
ALTALINK 03-Jul-19 12:00 05-Jul-19 15:30 2.15 Days
Continuous
510s ACF22 GOI Annual Inspection  
ALTALINK 03-Jul-19 12:30 04-Jul-19 16:30 28 Hours
Continuous
511s1352 (ACF12) GOI,511s 1352 (511s Crossings) ACF Bank Maintenance and Vegetation Control  
ALTALINK 04-Jul-19 08:30 04-Jul-19 16:30 8 Hours
Daily
511s 1452 (511s Crossings),511s1452 (ACF11) GOI ACF Bank Maintenance and Vegetation Control  
ALTALINK 05-Jul-19 10:00 05-Jul-19 11:00 60 Mins
Daily
285s3202 (285s East Camrose) Change T1/87B protection module wiring to move mechanical trips out of the relay and to come directly from 94 tripping relays. Breaker advice to function test trip to breaker from protection.  
ALTALINK 06-Jul-19 09:00 25-Sep-19 17:00 81.33 Days
Continuous
205s452 & 240 kV Bus 2 GOI Construction for new wind farm.  
EPCOR, ALTALINK 08-Jul-19 07:00 10-Jul-19 17:00 2.42 Days
Continuous
921L outage @ Cloverbar S/S,921L (71s Lamoureux - 987s Clover Bar) Commissioning of Anti- Islanding Upgrade Project  
ALTALINK 08-Jul-19 07:30 08-Jul-19 16:30 9 Hours
Daily
511s1652 (R1) GOI,511s 1652 (511s Crossings) 511s1652, MSR Maintenance and Vegetation Control  
ATCO 08-Jul-19 09:30 11-Jul-19 17:00 3.31 Days
Continuous
7L702 (137s Sedgewick - 757s Battle River),7L702 Change Arms and Insulators on 7L702  
EPCOR, ALTALINK 08-Jul-19 09:30 12-Jul-19 17:00 4.31 Days
Continuous
908L Petrolia & Ellerslie,908L (89s Ellerslie - 816s Petrolia) Structure Refurbishment & Upgrades  
ENMAX, ALTALINK 08-Jul-19 09:45 08-Jul-19 17:45 8 Hours
Continuous
Altalink outage. 1109L,1109L (ENMAX 65 - ENMAX 25) Replaced cracked sheath voltage limiters on Altalink UG cable. Switching crew required  
ENMAX 08-Jul-19 09:45 08-Jul-19 17:45 8 Hours
Continuous
1109L Wash 25PT240-1109 zone. HV SW maintenance SW153, SW152, 25MD240-1109.  
ALTALINK 08-Jul-19 10:15 11-Jul-19 15:45 3.23 Days
Continuous
925L (74s - 63s) GOI,925L (63s Red Deer - 74s Janet) SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 09-Jul-19 07:30 09-Jul-19 16:30 9 Hours
Daily
511s 1752 (511s Crossings),511s1752 (R2) GOI 511s1752, MSR Maintenance and Vegetation Control  
ALTALINK, ENMAX 09-Jul-19 07:45 09-Jul-19 17:15 9.5 Hours
Daily
1003L (74s Janet - ENMAX 25),1003L (74s-C25s) - GOI Replaced cracked sheath voltage limiters  
ENMAX, ALTALINK 09-Jul-19 07:45 09-Jul-19 17:15 9.5 Hours
Continuous
1003L.,1003L (74s Janet - ENMAX 25) HV Switch maintenance 25MD240-1003. Doble 25PT240-1003, Wash 25PT240-1003 zone  
ALTALINK 10-Jul-19 07:30 10-Jul-19 16:30 9 Hours
Daily
511s SVC+ GOI,511s SVC Plus (511s Crossings) 511s1552, Voltage Source Converter Reactor Maintenance and Vegetation Control  
ALTALINK 10-Jul-19 07:45 10-Jul-19 16:15 8.5 Hours
Daily
936L (5s-102s) - GOI,936L (102s Langdon - 5s East Calgary) replaced cracked sheath voltage limiters  
ENMAX 10-Jul-19 08:00 12-Jul-19 18:00 2.42 Days
Continuous
25s 240kV BusZ41 Substation washing, Doble Test 25PT240-Z41, HV SW Maint SW131, SW137, SW145, SW149. Repair erroneous CT wiring on 25B240-D131.  
ALTALINK, ENMAX 10-Jul-19 16:15 11-Jul-19 15:45 23.5 Hours
Daily
937L (102s Langdon - 5s East Calgary),937L (5s-102s) - GOI replaced cracked sheath voltage limiters on UG cables  
ALTALINK 11-Jul-19 07:30 11-Jul-19 16:30 9 Hours
Daily
511s 2152 (511s Crossings),511s2152 (ACF21) GOI ACF21 Maintenance and Vegetation Control  
ALTALINK 11-Jul-19 10:00 11-Jul-19 11:00 60 Mins
Daily
285s3202 (285s East Camrose) Change T2/87B protection module wiring to move mechanical trips out of the relay and to come directly from 94 tripping relays. Breaker advice to function test trip to breaker from protection.  
ALTALINK 12-Jul-19 07:30 12-Jul-19 16:30 9 Hours
Daily
511s2252 (ACF22) GOI,511s 2252 (511s Crossings) ACF22 Maintenance and Vegetation Control  
EPCOR, ALTALINK 15-Jul-19 09:30 18-Jul-19 17:00 3.31 Days
Continuous
915L Cloverbar & 38S,915L (38s East Edmonton - 987s Clover Bar) Structure Refurbishment & Upgrades  
ALTALINK 16-Jul-19 06:00 25-Jul-19 19:00 9.54 Days
Continuous
1206L (89s - 12s) - GOI,1206L (89s Ellerslie - 12s Heartland) Spacer and damper replacement on Structures # 4 - 191  
ALTALINK 16-Jul-19 08:30 19-Jul-19 12:00 3.15 Days
Continuous
510s ACF21 GOI Annual Inspection  
ATCO 17-Jul-19 08:00 23-Jul-19 17:00 6.38 Days
Continuous
834s 902T (834s Wesley Creek),834S 902T Three Creeks Project Install the foundations and A-Frame for the new 240 kV bays  
ALTALINK, ENMAX 17-Jul-19 08:15 17-Jul-19 16:45 8.5 Hours
Daily
985L (74s-C25s) - GOI,985L (ENMAX 25 - 74s Janet) replaced cracked sheath voltage limiters  
ALTALINK 17-Jul-19 08:30 18-Jul-19 18:30 1.42 Days
Daily
995L (Open-end) Advice,995L (62s Brazeau - 995AL tap) Open due to double TPR outage. 9062R Radio tower repair. July 18 is back up date.  
ALTALINK 18-Jul-19 07:15 18-Jul-19 17:45 10.5 Hours
Daily
87s T2 (87s Gaetz),87s T2(TX18339) GOI oil condition is in question and requires followup inspection  
ATCO 18-Jul-19 08:00 18-Jul-19 12:00 4 Hours
Continuous
791S 705,7L29 (850s Rainbow Cogen - 791s Rainbow Lake),791s 705 (791s Rainbow Lake) Test new RB4 protection  
SUNCOR 22-Jul-19 08:00 11-Aug-19 18:00 20.42 Days
Continuous
29EDD-1 Millennium 5 year maintenance  
ALTALINK 22-Jul-19 08:30 25-Jul-19 16:30 3.33 Days
Continuous
510s ACF11 GOI Annual Inspection  
BCH 22-Jul-19 09:00 24-Jul-19 17:00 2.33 Days
Continuous
1L274 (Britt Creek - 1D4L274) remove and replace some dampers AB-BC
ATCO 22-Jul-19 10:00 31-Jul-19 14:00 9.17 Days
Continuous
7L20,7L20 (810s Dome Cutbank - 740s H.R.Milner) 7L20 X-Arm/Insulators Replacement  
ALTALINK 22-Jul-19 10:15 22-Jul-19 17:45 7.5 Hours
Daily
632s PS1 (TX18793) - GOI,632PS (632s Russell) Change filters on 3 presses  
ALTALINK 24-Jul-19 08:15 24-Jul-19 17:45 9.5 Hours
Daily
356s652 - GOI Modifying sync check settings on SEL-352-2.  
ALTALINK 24-Jul-19 08:15 24-Jul-19 17:45 9.5 Hours
Daily
575s719N (719L) GOI CT 45131, 45132, 45133 oil samples  
ENMAX, ALTALINK 25-Jul-19 08:00 26-Jul-19 16:00 1.33 Days
Continuous
24PT138-Z31. 24.81L. 24.83L. 24B138-24BT3. 24.1TR,24.81L (ENMAX 31 - ENMAX 24),24.83L (74s Janet - ENMAX 24),24.1TR (ENMAX 24) Doble 24PT138-Z31. SF6 Gas sample 24B138-24.83. Doble test 24B138-24.83 CT.  
ALTALINK 25-Jul-19 08:15 25-Jul-19 17:45 9.5 Hours
Daily
356s952 - GOI Modifying sync check settings on SEL-352-2.  
ALTALINK 29-Jul-19 07:30 29-Jul-19 15:30 8 Hours
Daily
632s11,632s12 Advice for customer,412L (396s Pincher Creek - 632s Russell),413L (239s Castle River - 632s Russell) Customer switch maintenance AB-BC
ENMAX, ALTALINK 29-Jul-19 08:00 29-Jul-19 16:00 8 Hours
Continuous
24.83L.,24.83L (74s Janet - ENMAX 24) SF6 gas sample 24B138-24.83L  
EPCOR, ALTALINK 29-Jul-19 09:30 01-Aug-19 18:00 3.35 Days
Continuous
947L (89s Ellerslie - 987s Clover Bar),947L Cloverbar & Ellerslie Structure Refurbishment & Upgrades  
ALTALINK 29-Jul-19 10:45 01-Aug-19 17:45 3.29 Days
Continuous
89s752 (908L) GOI 240kV breaker maintenance, leaking capacitors; 89s13 doesn't fully open adjustment needed  
ALTALINK 30-Jul-19 06:00 08-Aug-19 19:00 9.54 Days
Continuous
1206L (89s Ellerslie - 12s Heartland),1206L (89s - 12s) - GOI Spacer and damper replacement on Structures # 4 - 191  
ENMAX, ALTALINK 30-Jul-19 08:00 30-Jul-19 18:00 10 Hours
Continuous
12.1TR (ENMAX 12),832L (ENMAX 10 - ENMAX 12),832L. 12.1TR. 12B138-832L Adjust MD Alignment on the next Outage. [AVANTIS] 12 Sub 12MD138-12.1TR Phases not flat. Doble 10PT138-832  
ALTALINK 01-Aug-19 08:30 01-Aug-19 16:30 8 Hours
Daily
310p1852 GOI Close Dashpots Leaking  
EPCOR, ALTALINK 02-Aug-19 08:00 02-Aug-19 17:00 9 Hours
Continuous
1239L @ Genesee,1239L (510s Sunnybrook - 330p Genesee) Doble  
ATCO 05-Aug-19 10:00 14-Aug-19 14:00 9.17 Days
Continuous
7L20,7L20 (810s Dome Cutbank - 740s H.R.Milner) 7L20 X-Arm/Insulators Replacement  
EPCOR 06-Aug-19 08:00 07-Aug-19 17:00 1.38 Days
Continuous
816s P2401 (816s Petrolia),P2401 @ Petrolia Splitting of DC  
SUNCOR 06-Aug-19 08:00 12-Aug-19 18:00 6.42 Days
Continuous
29PL7-1 (29EDD-34 - 29EDD-85) replace damaged contacts  
ALTALINK 06-Aug-19 09:00 14-Aug-19 09:00 8 Days
Continuous
89s1352 GOI,89s 1352 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module.  
ALTALINK 06-Aug-19 09:00 16-Aug-19 17:00 10.33 Days
Continuous
786L (799s Coleman - Natal),786L/1L275 (799s - B1s) - GOI Re-building from Structures #77 - 81 AB-BC
ALTALINK 06-Aug-19 10:15 09-Aug-19 15:45 3.23 Days
Continuous
1064L (74s - 102s) GOI,1064L (102s Langdon - 74s Janet) SCADA equipment upgrade  
ALTALINK 07-Aug-19 07:45 07-Aug-19 17:45 10 Hours
Daily
906L (17s Benalto - 42s Sarcee),17s906X (906L) GOI repair 17s906X A/B  
EPCOR 08-Aug-19 08:00 09-Aug-19 17:00 1.38 Days
Continuous
P2402 @ Petrolia,816s P2402 (816s Petrolia) Splitting the DC  
ENMAX, ALTALINK 12-Aug-19 08:00 12-Aug-19 18:00 10 Hours
Continuous
1107L. 65PT240-1107.,1107L (ENMAX 65 - 237s Foothills) Substation Washing  
EPCOR 12-Aug-19 08:00 13-Aug-19 17:00 1.38 Days
Continuous
816s P2403 (816s Petrolia),P2403 @ Petrolia Splitting the DC  
SUNCOR 12-Aug-19 08:00 08-Sep-19 18:00 27.42 Days
Continuous
30EDD-1 5 year 624T transformer maintenance and repair  
ALTALINK 12-Aug-19 10:15 15-Aug-19 15:45 3.23 Days
Continuous
1065L (74s - 102s) GOI,1065L (102s Langdon - 74s Janet) SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ENMAX, ALTALINK 13-Aug-19 08:00 13-Aug-19 18:00 10 Hours
Continuous
1106L (ENMAX 65 - 237s Foothills),1106L. 65PT240-1106. Substation Washing. 65MD240-1106 Investigate and repair whip operation  
ALTALINK 13-Aug-19 09:00 13-Aug-19 10:00 60 Mins
Daily
89s 252 (89s Ellerslie),89s252 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s252 breaker from new breaker failure module.  
ALTALINK 13-Aug-19 10:01 13-Aug-19 11:00 59 Mins
Daily
89s 652 (89s Ellerslie),89s652 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s652 breaker from new breaker failure module.  
ALTALINK 13-Aug-19 11:01 13-Aug-19 12:00 59 Mins
Daily
89s952 Advice,89s 952 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s952 breaker from new breaker failure module.  
ALTALINK 13-Aug-19 13:00 13-Aug-19 14:00 60 Mins
Daily
89s 1752 (89s Ellerslie),89s1752 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s1752 breaker from new breaker failure module.  
ALTALINK 13-Aug-19 14:01 13-Aug-19 15:00 59 Mins
Daily
89s2052 Advice,89s 2052 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s2052 breaker from new breaker failure module.  
ENMAX, ALTALINK 14-Aug-19 08:00 16-Aug-19 18:00 2.42 Days
Continuous
1109L. 65PT240-1109.,1109L (ENMAX 65 - ENMAX 25) Substation Washing. Doble 65PT240-1109. 1109 Las. HV SW maint 65MD240-1109, SW139, SW140  
ALTALINK 14-Aug-19 10:00 14-Aug-19 11:00 60 Mins
Daily
89s 1452 (89s Ellerslie),89s1452 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s1452 breaker from new breaker failure module.  
EPCOR 15-Aug-19 08:00 16-Aug-19 17:00 1.38 Days
Continuous
Poundmaker 2404 (Poundmaker),P2404 @ Petrolia Splitting the DC  
SUNCOR 16-Aug-19 08:00 22-Aug-19 18:00 6.42 Days
Continuous
29EDD-56 replace and commission TAP  
SUNCOR 16-Aug-19 08:00 29-Sep-19 18:00 44.42 Days
Continuous
29EDD-56 5 year maintenance  
ENMAX, ALTALINK 19-Aug-19 08:00 19-Aug-19 18:00 10 Hours
Continuous
1080L (ENMAX 65 - ENMAX 25),1080L. Doble 65PT240-1080. SF6 Sample 65-D131, 25-D132. Substation washing PT1080.  
EPCOR 19-Aug-19 08:00 20-Aug-19 17:00 1.38 Days
Continuous
816s P2405 (816s Petrolia),P2405 @ Petrolia Splitting the DC  
ATCO 19-Aug-19 08:00 30-Aug-19 15:00 11.29 Days
Continuous
2029s T11 (2029s Heathfield),2029S T11 2019 TURNAROUND MAINTENANCE at HEATHFIELD 2029S (GOI #1)

13L50 will be out of Service
 
ATCO 19-Aug-19 08:00 30-Aug-19 15:00 11.29 Days
Continuous
2075S T11,2075s T11 (2075s Newell) 2019 TURNAROUND MAINTENANCE at NEWELL 2075S (GOI #2)

13L50 will be out of Service
 
ATCO 19-Aug-19 08:00 30-Aug-19 15:00 11.29 Days
Continuous
13L50 (DC LINK),13L50 (2029s Heathfield - 2075s Newell) 2019 TURNAROUND MAINTENANCE on 13L50 (GOI #3)

2029S and 2075S will be out of Service
 
ENMAX, ALTALINK 19-Aug-19 08:00 12-Sep-19 16:00 24.33 Days
Continuous
932L,932L (74s Janet - 162s Beddington) Line Protection Upgrade  
BCH 19-Aug-19 09:00 06-Sep-19 17:00 18.33 Days
Continuous
2L294 (Nelway - A.A. Lambert) "Annual Plan Request F20 - Ian Kozicky
2L294 out from NLY to AAL for structure replacements (HELI WORK)"
AB-BC
ALTALINK 19-Aug-19 10:15 22-Aug-19 15:45 3.23 Days
Continuous
932L (74s - 162s) GOI SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 20-Aug-19 09:00 28-Aug-19 09:00 8 Days
Continuous
89s1652 GOI,89s 1652 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module..  
BCH 20-Aug-19 09:00 06-Sep-19 17:00 17.33 Days
Continuous
5L72 (Mica Creek - Nicola) Arcing Horn and Spacer Damper AB-BC
ALTALINK 21-Aug-19 07:00 21-Aug-19 17:00 10 Hours
Daily
995L (Open-end) Advice,995L (62s Brazeau - 995AL tap) Open due to double TPR outage. 9062R - 9495R Radio replacement.  
EPCOR 22-Aug-19 08:00 23-Aug-19 17:00 1.38 Days
Continuous
P2406 @ Petrolia,816s P2406 (816s Petrolia) Splitting the DC  
ALTALINK 26-Aug-19 07:15 29-Aug-19 17:45 3.44 Days
Continuous
17s T3 (17s Benalto),17s T3(TX18814) GOI qualitrol modification, oil leaks, maintenance, doble  
ENMAX, ALTALINK 26-Aug-19 08:00 26-Aug-19 18:00 10 Hours
Continuous
1109L. 25PT240-1109,1109L (ENMAX 65 - ENMAX 25) Substation Washing. HV SW maint  
ALTALINK 26-Aug-19 10:15 29-Aug-19 15:45 3.23 Days
Continuous
929L (74s - 287s) GOI,929L (74S Janet - 287s Hazelwood) SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 26-Aug-19 13:45 04-Sep-19 15:15 9.06 Days
Continuous
275s T1 (Tx18457) - GOI,275s T1 (275s Jenner) Techs onsite to perform tap changer upgrades, maintain, fix leaks, doble, IDD, hydran and bird cover install  
ENMAX, ALTALINK 27-Aug-19 08:00 27-Aug-19 18:00 10 Hours
Continuous
985L (ENMAX 25 - 74s Janet),985L. 25PT240-985 Substation Washing  
ALTALINK 27-Aug-19 09:00 27-Aug-19 10:00 60 Mins
Daily
89s 452 (89s Ellerslie),89s452 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s452 breaker from new breaker failure module.  
ALTALINK 27-Aug-19 10:00 27-Aug-19 11:00 60 Mins
Daily
89s 852 (89s Ellerslie),89s852 GOI Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s852 breaker from new breaker failure module.  
ALTALINK 27-Aug-19 11:00 27-Aug-19 12:00 60 Mins
Daily
89s 1252 (89s Ellerslie),89s1252 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s1252 breaker from new breaker failure module.  
ALTALINK 27-Aug-19 13:00 27-Aug-19 14:00 60 Mins
Daily
89s1952 Advice,89s 1952 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s1952 breaker from new breaker failure module.  
ALTALINK 27-Aug-19 14:00 27-Aug-19 15:00 60 Mins
Daily
89s 2252 (89s Ellerslie),89s2252 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s2252 breaker from new breaker failure module.  
ATCO 28-Aug-19 07:00 02-Sep-19 17:00 5.42 Days
Continuous
766S 901T,766S 701,766s 901T (766s Nevis) RAS modifications for the Pattern Lanfine WAGF project  
ENMAX, ALTALINK 28-Aug-19 08:00 28-Aug-19 18:00 10 Hours
Continuous
1003L. 25PT240-1003,1003L (74s Janet - ENMAX 25) Substation Washing  
ALTALINK 28-Aug-19 10:00 28-Aug-19 11:00 60 Mins
Daily
89s1552 Advice,89s 1552 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s1552 breaker from new breaker failure module.  
ENMAX, ALTALINK 29-Aug-19 08:00 29-Aug-19 18:00 10 Hours
Continuous
1080L (ENMAX 65 - ENMAX 25),1080L. 25PT240-1080 Substation Washing  
EPCOR 03-Sep-19 07:00 01-Nov-19 17:00 59.42 Days
Continuous
816s T2 (816s Petrolia),TX2 @ Petrolia Tap changer & Oil reclamation  
ALTALINK 03-Sep-19 09:00 11-Sep-19 09:00 8 Days
Continuous
89s 852 (89s Ellerslie),89s852 GOI Replace existing breaker fail protection relay module and breaker control module with C60 module.  
ALTALINK 03-Sep-19 10:30 06-Sep-19 15:30 3.21 Days
Continuous
74s C4 GOI SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK, ATCO 03-Sep-19 23:00 04-Sep-19 06:00 7 Hours
Continuous
395s Station,174L/701L/7L77 GOI,174L (197s Bardo - 395s North Holden),7L77 (395s North Holden - 709s Vegreville),701L (395s North Holden - 223s Strome) 138kV bus insulators to be replaced, TX1 doble  
ALTALINK 04-Sep-19 13:45 04-Sep-19 17:15 3.5 Hours
Daily
275s T1 (Tx18457) & 25kV Bus 4 - GOI,275s T1 (275s Jenner) Clean hot 25kV switch 275s62  
ATCO 05-Sep-19 07:00 10-Sep-19 17:00 5.42 Days
Continuous
7L224,7L224 (774s Monitor - 650s Hansman Lake),774s 701 (774s Monitor),774S 701 RAS modifications for the Pattern Lanfine WAGF project  
ALTALINK, MONTANA 09-Sep-19 09:00 19-Sep-19 18:00 10.38 Days
Continuous
1201L/5L94 (520s - B2s) GOI,MATL (120s Picture Butte - Montana),1201L (520s Bennett - BCH Cranbrook) Component Replacements- Structure Range 350-455 AB-BC
ALTALINK 09-Sep-19 12:00 12-Sep-19 16:00 3.17 Days
Continuous
520s T1(Tx18414) GOI,520s T1 (520s Bennett) Change 240/500kv bus work(close Open Points) in order to energize Tx18414. Tx18415 to become the spare.In conjunction with 1201L/5L94 outage Ref# 26411.  
ALTALINK 10-Sep-19 08:15 12-Sep-19 17:15 2.38 Days
Continuous
370s T5 (370s North Lethbridge),370s T5 (Tx18510) GOI Maintain and doble T5  
ALTALINK 10-Sep-19 09:00 10-Sep-19 10:00 60 Mins
Daily
89s452 Advice,89s 452 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s452 breaker from new breaker failure module.  
ALTALINK 10-Sep-19 10:00 10-Sep-19 11:00 60 Mins
Daily
89s 1252 (89s Ellerslie),89s1252 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s1252 breaker from new breaker failure module.  
ALTALINK 10-Sep-19 11:01 10-Sep-19 12:00 59 Mins
Daily
89s1652 Advice,89s 1652 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s1652 breaker from new breaker failure module.  
ALTALINK 10-Sep-19 13:00 10-Sep-19 14:00 60 Mins
Daily
89s 1952 (89s Ellerslie),89s1952 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to 89s1952 breaker from new breaker failure module.  
ALTALINK 10-Sep-19 14:01 10-Sep-19 15:00 59 Mins
Daily
89s2252 Advice,89s 2252 (89s Ellerslie) Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s2252 breaker from new breaker failure module.  
ALTALINK 11-Sep-19 10:00 11-Sep-19 11:00 60 Mins
Daily
89s 752 (89s Ellerslie),89s752 Advice Replace existing breaker fail protection relay module and breaker control module with C60 module. Function trip test to89s752 breaker from new breaker failure module.  
ALTALINK 12-Sep-19 10:30 12-Sep-19 17:30 7 Hours
Daily
283s 138kV Partial Bus,836L,673L & T1,283s T1 (283s Violet Grove),673L (283s Violet Grove - 131s Moon Lake),836L (61s Lodgepole - 283s Violet Grove) To energize the Cap Bank new CT15  
ALTALINK, ATCO 13-Sep-19 07:00 20-Sep-19 18:00 7.46 Days
Continuous
409s 138 Bus 2,T3 GOI,T1,409s Shell Scotford 138 kV Bus 2,409s T3 (409s Shell Scotford),ALC02L (409s Shell Scotford - 879s Scotford Upgrader),857L (409s Shell Scotford - 410s Josephburg),409s T1 (409s Shell Scotford) Includes 857L and ALC02L in isolation. T1 Bushing replacement Insulator replacement (ALC02L strain), 409s857W breaker maintenance, Wildlife cover on 25 kV Busses, 857L B protection upgrade, NGR maintenance – Shell  
ALTALINK, Lethbridge 16-Sep-19 08:00 20-Sep-19 17:00 4.38 Days
Continuous
824L (593s Lethbridge Lakeview - 618s Riverbend) replace 593S4 motorized A/B  
ALTALINK 16-Sep-19 10:00 19-Sep-19 16:00 3.25 Days
Continuous
901L (74s - 64s - 63s) GOI,901AL (64s East Crossfield - 901L tap),901L (63s Red Deer - 74s Janet) SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 16-Sep-19 10:15 25-Sep-19 17:45 9.31 Days
Continuous
64s T2 (Tx18748) & 240kV Bus GOI,64s T2 (64s East Crossfield) Replace 240/138kV Bushings  
ALTALINK 16-Sep-19 12:00 16-Sep-19 18:00 6 Hours
Daily
38s 138kV BUS 1 - GOI,38s East Edmonton 138 kV Bus 1 Various Switch & Hot Spot Repairs  
ALTALINK, EPCOR 17-Sep-19 08:00 17-Sep-19 18:00 10 Hours
Daily
1056L (89s Ellerslie - 629s Argyll Transfer Station),1056L(89s - E629s) GOI Replace 1056L Strain Insulators at 89s Ellerslie  
ALTALINK, EPCOR 18-Sep-19 08:00 18-Sep-19 18:00 10 Hours
Daily
1057L(89s - E657s) GOI,1057L (89s Ellerslie - 657s Summerside) Replace 1057L Strain Insulators at 89s Ellerslie  
ALTALINK, ATCO 23-Sep-19 07:00 29-Sep-19 18:00 6.46 Days
Continuous
409s Shell Scotford 138 kV bus B1,T2 GOI,856L (409s Shell Scotford - 410s Josephburg),ALC01L (409s Shell Scotford - 408s Air Liquide Scotford),409s T2 (409s Shell Scotford),409s 138 Bus 1 Includes 856L and ALC01L in isolation. T2 Bushing replacement Insulator replacement (ALC01L strain), 409s20 breaker maintenance, Wildlife cover on 25 kV Busses, 856L B protection upgrade, ALC01L protection upgrade, NGR maintenance – Shell  
BCH 23-Sep-19 08:00 25-Sep-19 18:30 2.44 Days
Continuous
5L51 (Ingledow - Custer) BPA celllular work AB-BC
BCH 23-Sep-19 09:00 27-Sep-19 17:00 4.33 Days
Continuous
5L96 (Selkirk - Vaseux Lake) Annual Plan Request F20 - D. Fuhrmann, Michael Robertson
PM INSPECTION:
SEL 5D2CB5, SEL 5D1CB8, 5CB5, 5CB8, 5D22
AB-BC
ALTALINK 23-Sep-19 10:00 26-Sep-19 16:00 3.25 Days
Continuous
23.80L (74s - ENMAX 23s) GOI SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 24-Sep-19 08:00 25-Sep-19 17:00 1.38 Days
Continuous
1140L (289s Saunders Lake - 89s Ellerslie),89s77 (affecting 1140L) GOI Replace 89s77 Line PT’s  
ENMAX, ALTALINK 28-Sep-19 08:00 16-Oct-19 18:00 18.42 Days
Continuous
36.81L (44s Bearspaw - ENMAX 36),36.81L. Haskayne line raise project. Raising the line and replacing 4 structures to accommodate a new road construction.  
SUNCOR 30-Sep-19 08:00 17-Oct-19 18:00 17.42 Days
Continuous
29PL9-5 (29EDD-1 Millennium - 29EDD-34) 5 year maintenance  
BCH 30-Sep-19 09:00 11-Oct-19 17:00 11.33 Days
Continuous
2L294 (Nelway - A.A. Lambert) To install new 2SA3 & 2SSVT1 on NLY 2B3 AB-BC
ALTALINK 30-Sep-19 09:30 11-Oct-19 17:30 11.33 Days
Continuous
71s T1 GOI,71s T1 (71s Lamoureux) Replace T1 Bushings  
ALTALINK 30-Sep-19 10:00 03-Oct-19 16:00 3.25 Days
Continuous
74s T1 GOI SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK 30-Sep-19 10:30 11-Oct-19 17:00 11.27 Days
Continuous
71s452 (affecting 787L) GOI,71s 452 (71s Lamoureux),787L (71s Lamoureux - 787L29) Replace the 71s452 138kV CTs and breaker maintenance  
ALTALINK 01-Oct-19 07:00 21-Oct-19 17:00 20.42 Days
Continuous
879L (368s Burdett - 244s Bowmanton),879L (244s - 368s) - GOI Component replacements between Structures #298 - 731  
ALTALINK, EPCOR 01-Oct-19 08:00 02-Oct-19 17:00 1.38 Days
Continuous
89s78 (affecting 909L) GOI,909L (89s Ellerslie - 665s Dome) Replace 89s78 Line PT’s  
ALTALINK 07-Oct-19 10:30 10-Oct-19 15:30 3.21 Days
Continuous
74s C3 GOI SCADA equipment upgrade, migrate new alarms, controls, analogs and remote access to new SCADA system.  
ALTALINK, ATCO 09-Oct-19 07:30 09-Oct-19 12:29 4.98 Hours
Daily
526s152 (7L129) GOI,526s 152 (526s Buffalo Creek),7L129 (526s Buffalo Creek - 918s Bauer) tank heater repair  
ALTALINK, ATCO 09-Oct-19 12:30 09-Oct-19 17:30 5 Hours
Daily
526s252 (7L50) GOI,7L50 (526s Buffalo Creek - 7L50D2),526s 252 (526s Buffalo Creek) tank heater repair  
ALTALINK 14-Oct-19 07:00 25-Oct-19 17:00 11.42 Days
Continuous
786L (799s Coleman - Natal),1L275 (786L) Advice for BCH Structure replacement - BC Hydro(Placeholder)  
BCH 14-Oct-19 09:00 18-Oct-19 17:00 4.33 Days
Continuous
5L98 (BCH Nicola - Vaseux Lake) Clearance required to replace end of life insulators, install arcing horns and replace marker balls AB-BC
BCH 14-Oct-19 09:00 25-Oct-19 17:00 11.33 Days
Continuous
1L275 (799s Coleman - Natal) Annual Plan Request F20 - Ian Kozicky AB-BC
ALTALINK 15-Oct-19 10:15 29-Oct-19 17:45 14.31 Days
Continuous
74s T2 (74s Janet) 74s T2 reclaim oil, download IDD data, new hydrean sensor, corrosive sulfur mitigation, fix leaks  
SUNCOR 18-Oct-19 08:00 03-Nov-19 18:00 16.46 Days
Continuous
29PL9-6 (29EDD-1 Millennium - 29EDD-34) 5 year maintenance  
EPCOR 19-Oct-19 07:00 01-Nov-19 17:00 13.42 Days
Continuous
CV5 @ Castledowns & Victoria,CV5 (557s Castle Downs - 511s Victoria) CV5 240kV Splice/ Termination  
EPCOR 21-Oct-19 07:00 21-Oct-19 17:00 10 Hours
Continuous
805s J2403 (805s Jasper),J2403 @ Jasper Substation Switch and breaker operation for Nait Student Demo  
BCH 21-Oct-19 09:00 25-Oct-19 17:00 4.33 Days
Continuous
2L112 (Nelway - Boundary) annual plan request F19 AB-BC
BCH 25-Oct-19 09:00 25-Oct-19 17:00 8 Hours
Continuous
5L76 (Ashton Creek - Nicola) ACK 5D22 Inspection AB-BC
ALTALINK 28-Oct-19 12:45 03-Nov-19 17:45 6.25 Days
Continuous
281s T1 (Tx18897) - GOI,281s T1 (281s Johnson) Repair Leak and Tx testing  
ENMAX 02-Nov-19 08:00 30-Nov-19 18:00 28.46 Days
Continuous
ENMAX 25 B240-D135 (ENMAX 25),ENMAX 25 MD240-2GSU (ENMAX 25),ENMAX 25 B240-D134 (ENMAX 25) HV SW MD maintenance  
ATCO, CapitalPower 07-Nov-19 07:00 07-Nov-19 17:00 10 Hours
Continuous
615S Halkirk,Halkirk Wind Farm Attach new in out station  
BCH 12-Nov-19 09:00 22-Nov-19 17:00 10.33 Days
Continuous
1L274 (48s Pocaterra - Britt Creek) annual maintenance AB-BC
ENMAX, ALTALINK 18-Nov-19 08:00 13-Dec-19 16:00 25.33 Days
Continuous
918L (281s Johnson - 162s Beddington) line protection upgrade  
ENMAX, ALTALINK 18-Nov-19 08:00 13-Dec-19 16:00 25.33 Days
Continuous
24.83L (74s Janet - ENMAX 24),24.83L Transmission Line Relocate. Phasing required on return  
BCH 02-Dec-19 09:00 13-Dec-19 17:00 11.33 Days
Continuous
1L274 (48s Pocaterra - Britt Creek) annual maintenance AB-BC
CapitalPower 07-Dec-19 07:00 12-Dec-19 17:00 5.42 Days
Continuous
615S Halkirk Reroute OPGW test and commission.  
ATCO 06-Jan-20 08:00 17-Jan-20 16:00 11.33 Days
Continuous
7L20,7L20 (810s Dome Cutbank - 740s H.R.Milner),740S 704 replace breaker and re conductor switches  
ATCO 07-Jan-20 08:00 27-Jan-20 17:00 20.38 Days
Continuous
834S 902T,834s 902T (834s Wesley Creek) Three Creeks Project
Install the 240 kV switches (close proximity to energized bus),
String the flex bus between the bus A-Frames and line A-Frames
Re configure the pipe bus to its final configuration
Commission 902T logic to new breakers
 
ATCO 13-Jan-20 08:00 17-Jan-20 17:00 4.38 Days
Continuous
7L131 (834s Wesley Creek - 905s Meikle),7L131 To facilitate the installation of the new 9L124 and 9L139 we need to lower 7L08, 7L131 and 7L106  
ATCO 20-Jan-20 07:00 23-Jan-20 16:00 3.38 Days
Continuous
9L59,9L59 (972s Tinchebray - 801s Anderson) Outage for Garden Plain Wind Project  
ATCO 20-Jan-20 08:00 24-Jan-20 17:00 4.38 Days
Continuous
7L106 (834s Wesley Creek - 905s Meikle),7L106 To facilitate the installation of the new 9L124 and 9L139 we need to lower 7L08, 7L131 and 7L106  
ATCO 20-Jan-20 08:00 30-Jan-20 16:00 10.33 Days
Continuous
740S 701 replace breaker and re conductor switches  
ENMAX 03-Feb-20 08:00 14-Feb-20 16:00 11.33 Days
Continuous
162.81L (ENMAX 162 Beddington - 391S Balzac) Line Protection Upgrade  
ATCO 06-Mar-20 07:00 13-Mar-20 17:00 7.38 Days
Continuous
9L101,9L101 (2005s Secord - 957s McClelland) Line move for mine expansion.
Attach new line to existing 9L101
 
ATCO 03-Aug-20 07:00 03-Nov-20 17:00 92.46 Days
Continuous
972S 905B,972s 905B (972s Tinchebray) Halkirk 2 Windfarm Project  
SUNCOR 26-Aug-20 09:00 05-Sep-20 18:00 10.38 Days
Continuous
29PL9-14 (29EDD-56 - 29EDD-34),29PL9-15 (29EDD-56 - 29EDD-34) maintenance on bus 29PP-41F  
ATCO 06-Sep-20 08:00 20-Jan-21 16:00 136.38 Days
Continuous
951S 908,951S 900BS2 951S construction for 9L162 & 9L193 addition
Construct new bay, install apparatus and make connections

908 outage Sept 6, 2020 – Jan 18, 2021
expanded to 900BS2 – Jan 18, 2021 - Jan 20, 2021
 
ATCO 14-Sep-20 07:00 23-Sep-20 17:00 9.42 Days
Continuous
972S 900BS1 Installing new 240Kv Bay (connect 907B to BUS 1) for 620S Goldeye substation connection  
SUNCOR, ATCO 14-Sep-20 09:00 20-Sep-20 18:00 6.38 Days
Continuous
29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake),29EDD-1 Millennium 5 and 10 year maintenance  
ATCO 23-Sep-20 07:00 25-Sep-20 17:00 2.42 Days
Continuous
972S 900BS2,9L16 (972s Tinchebray - 755s Cordel),9L16 Installing new 240Kv Bay (connect 909A to BUS 2) for 620S Goldeye substation connection
Cutover 9L16 to New Bay
 
ATCO 25-Sep-20 07:00 28-Sep-20 17:00 3.42 Days
Continuous
9L177 Installing new 240Kv Bay for 620S Goldeye substation connection
Cutover 9L177 to New Bay
 
ATCO 28-Sep-20 07:00 29-Sep-20 17:00 1.42 Days
Continuous
9L62 Installing new 240Kv Bay for 620S Goldeye substation connection
String 9L62 into 972S Tinchebray
 
ATCO, ALTALINK 22-Oct-20 07:00 27-Oct-20 17:00 5.42 Days
Continuous
7L77,7L65,7L65 (709s Vegreville - 710s Vermilion),7L77 (395s North Holden - 709s Vegreville) 7L65 Rebuild Project  
ATCO 15-Dec-20 07:00 23-Dec-20 17:00 8.42 Days
Continuous
730s 704 (730s Rycroft),730S 704,7L73 (730s Rycroft - 829s Boucher Creek),730s 703 (730s Rycroft),730s 702 (730s Rycroft),730S 702 SVC addition and 144 kv bus rebuild.  
ATCO 05-Jan-21 08:00 08-Jan-21 16:00 3.33 Days
Continuous
9L20 (766s Nevis - 755s Cordel),9L20 56772 Nevis Transformer Addition
9L20 Open -ended
 
ATCO 09-Jan-21 08:00 12-Jan-21 16:00 3.33 Days
Continuous
9L912,9L912 (766s Nevis - 63s Red Deer) 56772 Nevis Transformer Addition
9L912 Open -ended
 
ATCO 21-Jan-21 08:00 23-Jan-21 16:00 2.33 Days
Continuous
951S 900BS1 951S construction for 9L162 & 9L193 addition
Construct new bay, install apparatus and make connections
Connect 910A to 900BS1
 
ATCO 25-Jan-21 08:00 26-Jan-21 16:00 1.33 Days
Continuous
766S 901T,9L20,9L912 56772 Nevis Transformer Addition
Tie-in to the new bus for 902T
901T OOS
9L20 OPEN-ENDED
9L912 OPEN-ENDED
 
ATCO 15-Feb-21 07:00 02-Mar-21 17:00 15.42 Days
Continuous
9L16,972S 900BS2 Outage on 907B and 908A for the installation and commissioning of 907 and 907CT  
ATCO 01-Mar-21 07:00 02-Mar-21 17:00 1.42 Days
Continuous
972S 900BS2,9L16 (1) Outage on 9L16 to cut the line over to the new bay  
ATCO 08-Mar-21 07:00 12-Mar-21 17:00 4.42 Days
Continuous
9L177 Installing new 240Kv Bay (connect 907B to BUS 1) for 620S Goldeye substation connection  

AB-BC, AB-SK & AB-MATL: refer to AESO web posting: http://itc.aeso.ca/itc/public/reportIndex.do
Also,
AB-BC, AB-SK & AB-MATL: refer to ISO Rule 203.6: http://www.aeso.ca/rulesprocedures/18592.html

Prepared On: 2019-06-12   2:34:29 PM


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

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