Alberta Electric System Operator
System Co-ordination Plan
2024-06-13 to 2024-06-21
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 31-Dec-24 16:00 EPCOR IO C2 (Rossdale) forced outage 2,279.38 Days
Continuous		  
24-Oct-18 01:13 31-Dec-24 16:00 EPCOR IO C1 (Rossdale) forced outage 2,260.66 Days
Continuous		  
04-Sep-22 16:50 30-Sep-24 18:00 ATCO Outage 848s 401R (848s Ruth Lake) forced outage 757.05 Days
Continuous		  
31-Jul-23 14:56 27-Sep-24 16:00 ENMAX Outage 38B138-38.1CAP (SS-38), 38.1C (SS-38) motor run time fail 424.04 Days
Continuous		  
27-Nov-23 08:00 07-Mar-25 16:00 ENMAX Outage 32.2TR (SS-32) 32 sub 32.2TR 8 kV bus switchgear demolition 466.33 Days
Continuous		  
08-Jan-24 07:00 14-Jun-24 17:00 EPCOR Outage T2 (Rossdale), R721 (Rossdale), R723 (Rossdale), RAB2 (Rossdale) rossdale transformer assembly and scaffold build 158.38 Days
Continuous		  
19-Feb-24 10:00 17-Jun-24 17:00 ATCO TE 863s RTU/SCADA (863s Paintearth) modifications to existing RTU and new SCADA equipment 119.25 Days
Continuous		  
07-Mar-24 06:30 29-Aug-24 16:00 ALTALINK Outage 477s T1 (477s Amoco West Pembina) disconnect T1 and VR1 permanently, draining oil, release 477s T1, VR1, & 4.16kV equipment for salvage and RSLD2 then RSLD3 to be implemented at end of outage 175.35 Days
Continuous		  
02-Apr-24 07:00 30-Jun-24 17:00 EPCOR Outage T1 (Garneau), GT1 (Garneau) Garneau S/S Tx1 bay outage 89.42 Days
Continuous		  
09-Apr-24 15:00 18-Jun-24 16:30 ALTALINK Outage 151s C1 (151s Strathmore) broken 70.06 Days
Continuous		  
18-Apr-24 09:00 14-Jun-24 16:00 ATCO TE 716s RTU/SCADA (716s Lloydminster) lloyd sub rebuild is completed in stages and therefore SCADA verifications performed at varying times 57.29 Days
Continuous		  
23-Apr-24 08:00 27-Sep-24 16:00 ENMAX Outage 41.2TR (SS-41) forced outage - differential protection trip 157.33 Days
Continuous		  
29-Apr-24 07:00 02-Aug-24 17:00 EPCOR TE 557s Protection & Control (557s Castle Downs) protection blocking for annual relay maintenance 95.42 Days
Continuous		  
06-May-24 07:00 08-Nov-24 17:00 EPCOR Outage EP 511s Victoria T1 (EP 511s Victoria) Victoria: TX1 LCR, civil, demo, and construction 186.46 Days
Continuous		  
07-May-24 07:00 30-Jun-24 17:00 EPCOR TE 330p Protection & Control (330p Genesee) 138/500kV protection blocking for Repower Project Cut-Overs 54.42 Days
Continuous		  
12-May-24 12:00 17-Jul-24 17:30 ATCO TE 788s RTU/SCADA (788s Hotchkiss) 500SST1(AC/DC/SCADA), 701TCS, and 701T 66.23 Days
Continuous		  
13-May-24 07:00 21-Jun-24 17:00 EPCOR Outage 805s T3 (805s Jasper) tap changer rebuild w/Hitachi and oil processing w/stark 39.42 Days
Continuous		  
20-May-24 08:00 21-Jun-24 16:00 ENMAX Outage 5.10TR (SS-5) transformer protection upgrade 32.33 Days
Continuous		  
21-May-24 07:00 21-Jun-24 17:00 EPCOR Outage 816s P2403 (816s Petrolia) breaker LCR 31.42 Days
Continuous		  
21-May-24 13:30 13-Jun-24 17:30 ALTALINK Outage 12s T1 (12s Heartland), 12s 1452 (12s Heartland), 12s 1752 (12s Heartland), 12s 3689 (12s Heartland) internal inspection, hotspot repair (12s3689), breaker maintenance (12s1752) 23.17 Days
Continuous		  
28-May-24 08:00 13-Jun-24 16:00 REDDEER Outage 217s T2 (217s North Red Deer) 14T2 RTD replacement and transformer testing 16.33 Days
Continuous		  
01-Jun-24 08:00 14-Jun-24 16:00 ATCO, ALBIAN Outage 920s 901T (920s Jackpine), 920s 901 (920s Jackpine), 920s A1 (920s Jackpine) repair SF6 gas leaks in 72kV GIS switchgear 13.33 Days
Continuous		  
03-Jun-24 07:00 16-Jun-24 18:00 ALTALINK Outage 701L (223s Strome - 395s North Holden), 395s 701X (395s North Holden) 701L CRU & WMP component replacement 13.46 Days
Continuous		  
03-Jun-24 07:00 30-Aug-24 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 LCR. Civil, Demo, and Construction 88.42 Days
Continuous		  
03-Jun-24 08:00 27-Jun-24 17:30 ALTALINK TE 255s RTU/SCADA (255s Vulcan) Enterprise project - update RTU for AIS1147 modification 24.4 Days
Daily		  
03-Jun-24 08:00 26-Jul-24 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) updating RTU configuration for the addition of a new RTU 53.38 Days
Daily		  
03-Jun-24 08:00 14-Jun-24 16:00 ATCO Outage 2075s 901T (2075s Newell), 2075s ACF11 (2075s Newell), 2075s ACF12 (2075s Newell), 2075s ACF13 (2075s Newell), 2075s ACF14 (2075s Newell), 2075S 927 (2075s Newell), 2075S 928 (2075s Newell), 2075S 929 (2075s Newell), 2075S 934 (2075s Newell) filter bank AC maintenance and green guard installation 11.33 Days
Continuous		  
03-Jun-24 08:00 13-Jun-24 17:30 ALTALINK TE 28s RTU/SCADA (28s West Brooks) Enterprise project - update RTU for AIS1147 modification 10.4 Days
Daily		  
03-Jun-24 09:00 16-Jun-24 16:00 ATCO Outage 7L32 (813s Little Smoky - 862s South Bezanson) pole replacement from test and treat 13.29 Days
Continuous		  
03-Jun-24 10:00 18-Jun-24 12:00 ATCO Outage 730s STATCOM (730s Rycroft), 730s 705 (730s Rycroft) SVC annual inspection and fire system inspection 15.08 Days
Continuous		  
07-Jun-24 08:00 13-Jun-24 17:00 ALTALINK TE 580s Protection & Control (580s Sylvan Lake) protection cutovers 6.38 Days
Continuous		  
10-Jun-24 07:00 15-Jun-24 17:00 EPCOR Outage 72DS26 (665s Dome - Strathcona), T1 (Strathcona), S721 (Strathcona), S722 (Strathcona), SAB1 (Strathcona) doble and disconnect maintenance 5.42 Days
Continuous		  
10-Jun-24 07:00 28-Jun-24 17:00 EPCOR Outage 72NW15 (Namao - Woodcroft), N726 (Namao), W723 (Woodcroft) pole replacement and pole straightening 18.42 Days
Continuous		  
10-Jun-24 07:30 14-Jun-24 16:30 ALTALINK Outage AML 511s 240kV ACF 2 Bus (511s Crossings), AML 511s 5052 (AML 511s Crossings), AML 511s 4952 (AML 511s Crossings), AML 511s ACF21 (AML 511s Crossings), AML 511s ACF22 (AML 511s Crossings) annual ACF 21, 22 inspections 4.38 Days
Continuous		  
10-Jun-24 07:30 14-Jun-24 18:00 ALTALINK, NOVAC Outage 535s 5652 (535s Joffre), 535s 5552 (535s Joffre), 330L1 (535s Joffre - 330s Nova Joffre) migrate and commission all associated line protections 4.44 Days
Continuous		  
10-Jun-24 08:00 17-Jun-24 07:00 CNRL, ATCO Outage 859s 52G (859s Primrose), 859s 701T (859s Primrose), 859s Protection & Control (859s Primrose)
701T will be isolated to start work on 25kV switchgear project		 6.96 Days
Continuous		  
10-Jun-24 08:00 30-Sep-24 18:00 ATCO, CNRL Outage 859s 501TD (859s Primrose) replace 25kV Switchgear to new GIS 112.42 Days
Continuous		  
10-Jun-24 08:00 16-Jun-24 17:00 ALTALINK TE 163s RTU/SCADA (163s Amoco Empress) update configuration and testing to implement new bus protection - for 1004s Bullseye 6.38 Days
Daily		  
10-Jun-24 08:00 19-Jun-24 16:00 ENMAX Outage 8B138-6A0 (SS-8) Install new BMR-6a0, change out CT terminal blocks in E6 panel 9.33 Days
Continuous		  
10-Jun-24 08:00 28-Jun-24 16:00 ENMAX TE Protection & Control (SS-8) SS8 autoswitching for Z67(Old) (8.1TR & 8.2TR) to be permanently disabled for demo 18.33 Days
Continuous		  
10-Jun-24 08:00 24-Jun-24 16:00 Syncrude Outage 25 (Aurora), UT2 (Aurora) need to isolate the 15kv bus for inspection repair 14.33 Days
Continuous		  
10-Jun-24 08:00 14-Jun-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) supervisory visibility outage required to download new configurations and migrating and commissioning of 330L1A protections, recloser, 5652 alarms controls and status 4.38 Days
Continuous		  
10-Jun-24 08:00 14-Jun-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) update and test configuration for DDR installation 4.38 Days
Daily		  
10-Jun-24 08:00 13-Jun-24 17:30 ALTALINK TE 504s RTU/SCADA (504s Queenstown) update RTU for AIS1147 modification - required for Enterprise project 3.4 Days
Daily		  
10-Jun-24 08:00 13-Jun-24 16:00 ENMAX Outage 38.3TR (SS-38) transformer power factor test - 38.3TR, secondary cable test, transformer maintenance, relay fault pressure test, check reversing switch, oil sampling MT, TC 3.33 Days
Continuous		  
10-Jun-24 09:00 14-Jun-24 17:00 BCH RB 2L113 (BCH Cranbrook - BCH Natal) 40-01 to 45-01 CANFOR logging for burnt timber 4.33 Days
Continuous		 AB-BC
10-Jun-24 09:00 14-Jun-24 17:00 BCH RB 5L92 (BCH Cranbrook - BCH Selkirk) replacing Flashed insulators via BAREHAND methods 4.33 Days
Continuous		 AB-BC
10-Jun-24 09:30 13-Jun-24 16:00 ATCO Outage 7LA53 (969s Lindbergh - 7L53 tap), 969s 701T (969s Lindbergh), 969s 501 (969s Lindbergh), 969s 701 (969s Lindbergh), 969s 301 (969s Lindbergh) maintenance, and leak repairs

 3.27 Days
Continuous		  
10-Jun-24 09:30 14-Jun-24 14:00 ALTALINK Outage 161L (255s Vulcan - 504s Queenstown), 255s 138kV Bus 1 (255s Vulcan), 255s T1 (255s Vulcan), 255s 1152 (255s Vulcan), 504s 161 (504s Queenstown), 255s 352 (255s Vulcan) install and commission new Bus 1 ‘B’ protection 4.19 Days
Continuous		  
10-Jun-24 10:00 21-Jun-24 17:30 ATCO Outage 786s SVC (786s High Level), 786s 703T (786s High Level), 786s 703 (786s High Level) 703T leak repair check up
, 703T remediation, civil work, and containment installation		 11.31 Days
Continuous		  
10-Jun-24 14:00 13-Jun-24 17:00 ALTALINK Outage 746s T2 (746s Sherwood Park) 25kV bushing replacement, doble, maintenance, leaks 3.13 Days
Continuous		  
11-Jun-24 07:00 17-Jul-24 17:00 ATCO TE 788s Protection & Control (788s Hotchkiss) block 144kV bus differential relay during 701T GOI 36.42 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 09:59 ATCO Outage 788s 701T (788s Hotchkiss), 788s 701TCS (788s Hotchkiss), 788s 702 (788s Hotchkiss) remove 701TCS, add NEW 707 breaker and switch 707A. Add new 701T 10.08 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE 788s Protection & Control (788s Hotchkiss) temporary settings update on 7L51 & 7L82 protection relays 10.4 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE ATC 793s Protection & Control (ATC 793s West Peace River) temporary settings update on 7L51 protection relays 10.4 Days
Continuous		  
11-Jun-24 08:00 21-Jun-24 17:30 ATCO TE 853s Protection & Control (853s Ring Creek), 853s RTU/SCADA (853s Ring Creek) temporary settings update on 7L82 protection relays 10.4 Days
Continuous		  
11-Jun-24 08:00 16-Jun-24 16:00 ENMAX TE Protection & Control (SS-36) 36PT138-Z31 secondary fuse outage. 36 sub DFR install 5.33 Days
Daily		  
11-Jun-24 08:00 16-Jun-24 16:00 ENMAX Outage 36.3TR (SS-36) 36 sub DFR installation 5.33 Days
Continuous		  
11-Jun-24 08:00 16-Jun-24 16:00 ENMAX Outage 36.1TR (SS-36) 36 sub DFR installation 5.33 Days
Continuous		  
11-Jun-24 08:00 13-Jun-24 16:00 ALTALINK Outage 163s T5 (163s Amoco Empress), 163s 1552 (163s Amoco Empress), 163s 1252 (163s Amoco Empress), 163s T1 (163s Amoco Empress), 163s 989 (163s Amoco Empress), 163s 189 (163s Amoco Empress) connect CTs, test trip, for 1004s Bullseye project, replace SS1 2.33 Days
Continuous		  
11-Jun-24 08:00 13-Jun-24 17:00 ALTALINK TE 580s RTU/SCADA (580s Sylvan Lake) Update RTU config for new maintenance switches, New DER ‘A’ relay, new AIS relay, new T2 ‘B’/DER ‘B’ relay, updates to L9 feeder protection relay. Short loss of visibility (2-15 Minutes) during update about 4 times each day. 2.38 Days
Continuous		  
11-Jun-24 08:30 14-Jun-24 17:30 ALTALINK Outage 748L (267s Killarney Lake - 277s Hayter), 277s 138kV Bus 1 (277s Hayter), 277s T1 (277s Hayter), 277s 189 (277s Hayter), 277s 852 (277s Hayter), 277s 748 (277s Hayter), 277s 2 (277s Hayter), 277s 952 (277s Hayter) 277s 189 switch replacement, 277s 2 switch replacement, TX protection upgrade 3.38 Days
Continuous		  
11-Jun-24 09:00 14-Jun-24 17:00 ALTALINK TE 277s Protection & Control (277s Hayter) trip testing for new T1 protection upgrade 3.33 Days
Daily		  
11-Jun-24 18:45 13-Jun-24 10:00 ATCO, ALTALINK Outage 7L701 (757s Battle River - 7LA701 tap), 7LA701 (764s Heisler - 7L701 tap), 701L (223s Strome - 7LA701 tap) forced outage 1.64 Days
Continuous		  
11-Jun-24 18:55 14-Jun-24 18:00 ATCO Outage 7L85 (801s Anderson - ATC 803s Bullpound) forced outage 2.96 Days
Continuous		  
11-Jun-24 19:08 21-Jun-24 18:00 ATCO Outage 9L950 (132s Ware Junction - 801s Anderson) forced outage 9.95 Days
Continuous		  
12-Jun-24 07:00 14-Jun-24 18:00 ALTALINK, GWPCORP Outage 603L (138s Windy Flats - 243s Soderglen), 243s T1 (243s Soderglen Wind Farm), 243s C1 (243s Soderglen Wind Farm), 243s 25CB1 (243s Soderglen), 243s 138DS1 (243s Soderglen) mainenance 603L between structures #1 - 109 2.46 Days
Continuous		  
12-Jun-24 07:00 14-Jun-24 17:00 ALTALINK TE 277s RTU/SCADA (277s Hayter) RTU database update 2.42 Days
Daily		  
12-Jun-24 08:00 20-Jun-24 18:00 SUNCOR Outage 29EDD-18 29PT-100 (29EDD-18 Firebag), 29EDD-18 29-752-102 (29EDD-18 Firebag), 29EDD-18 29-752-103 (29EDD-18 Firebag), 29EDD-18 29PS-0055 (29EDD-18 Firebag), 29EDD-18 29PS-0056 (29EDD-18 Firebag) FB - 450092664 29EDD18;29PT-100 SYSTEM;PM 5y
 8.42 Days
Continuous		  
12-Jun-24 08:00 13-Aug-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) Fortis is replacing the power feed to Nakiska ski hill gold chair, which in turn feeds our 9115R radio site. 62.38 Days
Continuous		  
12-Jun-24 08:00 13-Jun-24 16:00 ENMAX Outage 162.4TR (SS-162) tap changer inspection - 162.4-TC, oil sampling MT, TC, tap changer oil filtration maintenance, check reversing switch 1.33 Days
Continuous		  
12-Jun-24 08:00 14-Jun-24 16:00 ATCO Outage 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap), 791s 702 (791s Rainbow Lake) BC Hydro is requesting a COG/GOI on 7L81 to install two new disconnect switches and restore the temporary line cut 2.33 Days
Continuous		  
12-Jun-24 09:00 13-Jun-24 17:00 BCH RB 2L294 (BCH A. A. Lambert - BCH Cranbrook), 2L294 (BCH A. A. Lambert - BCH Nelway) proximity live line for barehand work on 5L92 at 153-2 1.33 Days
Continuous		 AB-BC
12-Jun-24 10:00 13-Jun-24 16:00 ALTALINK RB 1201L (520s Bennett - BCH Cranbrook) replace flashed insulators using BAREHAND methods 30 Hours
Daily		  
12-Jun-24 11:00 13-Jun-24 17:00 BCH, ALTALINK RB 5L94 (BCH Cranbrook - 102s Langdon), 1201L (520s Bennett - BCH Cranbrook) replace flashed insulators using barehand methods 30 Hours
Continuous		 AB-BC
12-Jun-24 12:00 14-Jun-24 17:30 ATCO Outage 905s 708 (905s Meikle) PRC-005 - trip coil testing 2.23 Days
Continuous		  
12-Jun-24 16:01 28-Jun-24 18:00 ATCO RB 7L81 (791s Rainbow Lake - BCH Harvest Energy FNC Tap) helicopter work in proximity to 1L359 16.08 Days
Continuous		  
12-Jun-24 23:00 13-Jun-24 03:00 ALTALINK Outage 62s 11 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
13-Jun-24 03:00 13-Jun-24 07:00 ALTALINK Outage 62s 12 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
13-Jun-24 07:00 18-Jun-24 18:00 ALTALINK Outage 409s T1 (409s Shell Scotford) installation of new 138KV bus B protection requiring CT contributions from T1 5.46 Days
Continuous		  
13-Jun-24 07:00 20-Jun-24 18:00 ALTALINK Outage 233s T1 (233s Beamer) install DDR circuits to transformer and low side breakers, replace T1 transformer bushings 7.46 Days
Continuous		  
13-Jun-24 07:00 18-Jun-24 17:00 ALTALINK TE 409s Protection & Control (409s Shell Scotford) protection outage on A87/138B2 to facilitate the implementation of new B87/138B2 5.42 Days
Daily		  
13-Jun-24 07:00 13-Jun-24 18:00 ALTALINK, DOW Outage 707L (54s Fort Saskatchewan - 166s Dow Chemical Fort Saskatchewan), 54s 707N (54s Fort Saskatchewan), 166s 707X (166s Dow Chemical Fort Saskatchewan) tighten hardware on structure, install new ground rod and repair downlead, re-tie OHSW
 11 Hours
Continuous		  
13-Jun-24 07:00 14-Jun-24 17:00 ALTALINK, EPCOR Outage 1055L (629s Argyll Transfer Station - 816s Petrolia), 240BA3 (629s Argyll Transfer Station - 814s Bellamy), 816s P2403 (816s Petrolia), 816s P2402 (816s Petrolia), 816s PDS11 (816s Petrolia) breaker P2403 LCR commissioning (PDS11 Op Checks) 1.42 Days
Continuous		  
13-Jun-24 08:00 13-Jun-24 16:00 ENMAX Outage 26.81L (SS-26 - SS-32), 32B138-26.81 (SS-32) breaker maintenance 8 Hours
Continuous		  
13-Jun-24 08:00 13-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment 9244R Bowmanton work 9 Hours
Daily		  
13-Jun-24 08:00 13-Jun-24 16:00 ENMAX Outage 6.80L (SS-6 - SS-35), 6.4TR (SS-6), 6B138-6.80 (SS-6) power factor test - 6PT138-6.80 and 6PT138-Z31 8 Hours
Continuous		  
13-Jun-24 08:00 13-Jun-24 17:00 ALTALINK TE 429s Protection & Control (429s Nelson Lake) standard relay maintenance 9 Hours
Daily		  
13-Jun-24 08:00 13-Jun-24 17:00 ALTALINK TE 429s RTU/SCADA (429s Nelson Lake) RTU database update 9 Hours
Daily		  
13-Jun-24 08:30 15-Jun-24 09:15 ALTALINK Outage 326s 1012 (326s Murray Lake) urgent customer request for isolation @ 326s 2.03 Days
Continuous		  
13-Jun-24 10:00 13-Jun-24 17:00 ATCO TE ATCO Telecom Equipment, 875s RTU/SCADA (875s Algar) low bes firewall install 7 Hours
Continuous		  
13-Jun-24 12:00 13-Jun-24 17:00 ATCO RB 7L76 (786s High Level - 832s Blumenort) high load move 7L76-4 5 Hours
Continuous		  
14-Jun-24 08:00 16-Jun-24 17:00 ALTALINK Outage 163s T2 (163s Amoco Empress) replace SS2, and lightning arresters 2.38 Days
Continuous		  
14-Jun-24 08:00 21-Jun-24 12:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 5B138-2.83 (SS-5) 2.83L T-tap 5 Sub leg. Outage for pulling and racking new cable up structure 24 and return OH to service afte 7.17 Days
Continuous		  
14-Jun-24 08:00 16-Jun-24 16:00 ENMAX Outage 7.84L (SS-7 - SS-36) 36 sub DFR install 2.33 Days
Continuous		  
14-Jun-24 08:00 14-Jun-24 16:00 ALTALINK Outage 163s C1 (163s Amoco Empress), 163s C2 (163s Amoco Empress) connect CTs, test trip for 1004s Bullseye project 8 Hours
Daily		  
14-Jun-24 08:00 14-Jun-24 12:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 2.83L (SS-2 - 2.83L tap), 2.83L (SS-13 - 2.83L tap), 5B138-2.83 (SS-5), 13B138-2.83 (SS-13) outage required to open 2.83L T-TAP 5sub leg. 5sub leg to remain out of service on return. 4 Hours
Continuous		  
14-Jun-24 08:00 14-Jun-24 12:00 ENMAX Outage 38.83L (SS-38 - SS-39), 38B138-38.83 (SS-38) breaker SF6 gas sample - 38B138-38.83 4 Hours
Continuous		  
14-Jun-24 08:00 14-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 353s RTU/SCADA (353s Plamondon) upgrade 353s MPLS node 9 Hours
Daily		  
14-Jun-24 12:00 14-Jun-24 16:00 ENMAX Outage 13.82L (SS-13 - SS-22), 13B138-13.82 (SS-13) breaker SF6 gas sample - 13B138-13.82 4 Hours
Continuous		  
14-Jun-24 17:31 20-Jun-24 17:30 ALTALINK Outage 277s T1 (277s Hayter), 277s 189 (277s Hayter), 277s 852 (277s Hayter), 277s 2 (277s Hayter) 25 kV switch (277s11) / breaker (277s324X, 277s324N) replacements, SCADA and relay addition 6 Days
Continuous		  
15-Jun-24 07:00 18-Jun-24 17:00 ENMAX, ALTALINK TE 653s Protection & Control (653s Summit) update RAS49-50-51 SCADA controls 3.42 Days
Daily		  
15-Jun-24 07:00 18-Jun-24 17:00 ALTALINK, GLPC TE 1055s Protection & Control (1055s Sollair) update RAS49-50-51 SCADA controls 3.42 Days
Daily		  
15-Jun-24 07:00 18-Jun-24 17:00 ALTALINK TE 199s Protection & Control (199s East Airdrie) update RAS49-50-51 SCADA controls 3.42 Days
Daily		  
15-Jun-24 07:00 18-Jun-24 17:00 ENMAX, ALTALINK TE 653s RTU/SCADA (653s Summit) rename and update alarms for RAS relays 3.42 Days
Daily		  
15-Jun-24 07:00 18-Jun-24 17:00 ALTALINK, GLPC TE 1055s RTU/SCADA (1055s Sollair) rename and update alarms for RAS relays 3.42 Days
Daily		  
15-Jun-24 08:00 15-Jun-24 18:00 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), SW83 (SS-38) power factor test - 38PT138-Z5, SW87 corrective, hot spot SW82 at 38 sub North phase jaw end 10 Hours
Continuous		  
16-Jun-24 08:00 16-Jun-24 16:00 ENMAX Outage 39.82L (SS-39 - SS-162), 39B138-39.82 (SS-39), 162MD138-39.82 (SS-162) power factor test - 39B138-39.82-CT 8 Hours
Continuous		  
16-Jun-24 09:00 18-Jun-24 16:00 SUNCOR Outage 30EDD-1 624T (30EDD-1), 30EDD-1 627 (30EDD-1), 30EDD-1 628 (30EDD-1) BP - TA maintenance - 30PL2-49 2.29 Days
Continuous		  
17-Jun-24 06:00 17-Jun-24 19:00 EPCOR Outage 1164L (816s Petrolia - EP Riverview), RW2401 (EP Riverview), RW2402 (EP Riverview), 816s P2404 (816s Petrolia), 816s P2403 (816s Petrolia) P&C commissioning, LCR and aerial insulator replacement 13 Hours
Continuous		  
17-Jun-24 07:00 17-Jun-24 17:00 EPCOR Outage T1 (Kennedale) breaker cell inspection 10 Hours
Continuous		  
17-Jun-24 07:30 20-Jun-24 17:30 ALTALINK RB 603L (138s Windy Flats - 243s Soderglen) maintenance 603L between structures #1 - 109 3.42 Days
Daily		  
17-Jun-24 07:30 17-Jun-24 10:30 ALTALINK RB 612L (336s Fincastle - 368s Burdett) removing an underbuilt spar arm and guy attachment on structure #181 3 Hours
Daily		  
17-Jun-24 08:00 27-Jun-24 16:00 ATCO RB 9L56 (720s Wabasca - 876s Brintnell) walk up and climbing inspection 10.33 Days
Continuous		  
17-Jun-24 08:00 24-Jun-24 16:00 ATCO RB 7L23 (796s Nipisi - 7L23 tap), 7L23 (858s Narrows Creek - 7L23 tap), 7L23 (732s Mitsue - 7L23 tap) walk up and climbing inspection 7.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ATCO RB 7L120 (788s Hotchkiss - 905s Meikle) walk up and climbing inspection 3.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ATCO RB 7L138 (788s Hotchkiss - 905s Meikle) walk up and climbing inspection 3.33 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 233s RTU/SCADA (233s Beamer) Update and test config for DDR installation, 735L protection replacement, & 233s46 PT addition. Supervisory will be in local control. No ACC visibility for 60 min during update. Restoration time 4 hours. RTU restored each day. 4.38 Days
Daily		  
17-Jun-24 08:00 17-Jun-24 16:00 ENMAX Outage 1.81L (SS-1 - SS-20), 20B138-1.81 (SS-20) HV breaker maintenance - 20B138-1.81 8 Hours
Continuous		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 349s Protection & Control (349s Stavely) update settings and test 4.33 Days
Continuous		  
17-Jun-24 08:00 17-Jun-24 16:00 ENMAX Outage 31.84L (SS-31 - SS-32), 31B138-31.84 (SS-31) power factor test 8 Hours
Continuous		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 15s Protection & Control (15s Fort Macleod) update 180L protections to 255s 4.33 Days
Daily		  
17-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) update RTU to add 180L breaker fail transfer trip alarms 4.38 Days
Daily		  
17-Jun-24 08:00 21-Jun-24 13:00 ALTALINK TE 55s RTU/SCADA (55s Olds) add SCADA I/O, 2037S protection upgrade, T2 B protection 4.21 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 16:00 ALTALINK TE 255s Protection & Control (255s Vulcan) testing 452 C60 breaker controls 4.33 Days
Daily		  
17-Jun-24 08:00 11-Jul-24 17:00 ALTALINK TE 281s RTU/SCADA (281s Johnson), AltaLink Telecom Equipment DWDM hardware upgrades- 2024 CR&U at 281s 24.38 Days
Daily		  
17-Jun-24 08:00 19-Jun-24 17:00 ALTALINK TE 510s RTU/SCADA (510s Sunnybrook), AltaLink Telecom Equipment DWDM hardware upgrades- 2024 CR&U at 510s Sunnybrooks DC 2.38 Days
Daily		  
17-Jun-24 08:00 17-Jul-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink) DWDM hardware upgrades- 2024 CR&U at 9520R 30.38 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 18:00 ATCO TE ATCO RTU/SCADA Implement changes to 6500S Barlow Solar SCADA and RTAC to uprate site export and implement new volt-watt control mode. Changes may cause temporary loss of visuals on HMI screen and cause export fluctuations while commissioning new control function. 4.42 Days
Continuous		  
17-Jun-24 08:00 21-Jun-24 18:00 ATCO TE ATCO RTU/SCADA Implement changes to 6501S Deerfoot Solar SCADA and RTAC to uprate site export and implement new volt-watt control mode. Changes may cause temporary loss of visuals on HMI screen and cause export fluctuations while commissioning new control function. 4.42 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 54.1TR (SS-54) transformer power factor test, secondary cable test, maintenance, relay fault pressure test, check reversing test and oil sampling MT, TC 3.33 Days
Continuous		  
17-Jun-24 08:00 18-Jun-24 16:00 ENMAX Outage 21.1C (SS-21) maintenance 1.33 Days
Continuous		  
17-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 31.2TR (SS-31) tap changer inspection - 31.2-TC, reinhausen 3.33 Days
Continuous		  
17-Jun-24 08:00 11-Jul-24 16:00 ALTALINK TE AltaLink Telecom Equipment, AltaLink RTU/SCADA (AltaLink) DWDM hardware upgrades- 2024 CR&U at 9010R 24.33 Days
Daily		  
17-Jun-24 08:30 20-Jun-24 17:30 ALTALINK RB 172L (83s Taber - 172EL tap), 172L (254s Coaldale - 172EL tap), 172EL (139s Hillridge - 172L tap) FRM component replacement (STR 826-1017) - live line 3.38 Days
Daily		  
17-Jun-24 08:30 20-Jun-24 17:30 ALTALINK RB 172L (254s Coaldale - 370s North Lethbridge) FRM component replacement 172L1022-1195 - live line 3.38 Days
Daily		  
17-Jun-24 09:00 21-Jun-24 17:30 ATCO Outage 822s 702 (822s Wolf Lake), 7L574 (822s Wolf Lake - 7L574 tap) Investigate the low gas alarm and densimeter, SF6 top up pole. 4.35 Days
Continuous		  
17-Jun-24 09:00 17-Jun-24 12:00 ATCO Outage 2014s 701T (2014s Halfway), 2014s 701 (2014s Halfway) PRC-005 trip coil testing 3 Hours
Continuous		  
17-Jun-24 09:00 20-Jun-24 17:00 ALTALINK, BHE Outage 879AL (719s Rattlesnake Ridge - 879L tap) Completion of critical work scopes. This outage will involve multiple work scopes. Repair of oil leakage on Main Transformer. Installation of additional protection alarms on main transformer. 3.33 Days
Continuous		  
17-Jun-24 09:00 17-Jun-24 16:00 ATCO TE 822s Wolf Lake RTU/SCADA resolve Siemens remote access issue 7 Hours
Continuous		  
17-Jun-24 09:00 21-Jun-24 17:30 ATCO RB 7L587 (822s Wolf Lake - 826s Marguerite Lake) reclosing turned off 4.35 Days
Continuous		  
17-Jun-24 09:30 21-Jun-24 17:30 ATCO Outage 12L70 (12s Heartland - 2029s Heathfield), 2029s 1202 (2029s Heathfield), 2029s 1203 (2029s Heathfield) PRC-005 trip coil testing on breaker 1202/1203, relay testing 4.33 Days
Continuous		  
17-Jun-24 09:30 17-Jun-24 17:30 ATCO Outage 7L32 (811s Clairmont Lake - 862s South Bezanson), 811s 710 (811s Clairmont Lake) PRC-005 trip coil testing on breaker 710 8 Hours
Continuous		  
17-Jun-24 09:30 21-Jun-24 14:00 ALTALINK Outage 180L (255s Vulcan - 928s East Stavely), 255s T2 (255s Vulcan), 255s 289 (255s Vulcan), 255s 34 (255s Vulcan), 255s 352 (255s Vulcan) install and commission new bus 2 ‘B’ protection, cutover over line LTO statues to AIS relay, replace 452 breaker control relay and replace breaker control module for 255s34 4.19 Days
Continuous		  
17-Jun-24 10:00 05-Jul-24 17:30 ATCO Outage 770s 703T (770s Three Hills), 770s 703 (770s Three Hills), 7L159 (770s Three Hills - 7L159 tap) 2023 Apparatus Leak Repairs Program - 703T at 770S Three Hills
25kv Load transferred to 701T		 18.31 Days
Continuous		  
17-Jun-24 10:00 20-Jun-24 16:00 ATCO Outage 7L50 (757s Battle River - 491L tap), 757s 709 (757s Battle River), 757s 704T (757s Battle River) 7L50 pole and arm replacement 3.25 Days
Continuous		  
17-Jun-24 12:01 17-Jun-24 15:00 ATCO Outage 2014s 702T (2014s Halfway), 2014s 702 (2014s Halfway) PRC-005 trip coil testing 2.98 Hours
Continuous		  
17-Jun-24 12:30 20-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 395s North Holden) live line reclose block for 701L CRU and WMP component replacement (str 1-111) 3.21 Days
Daily		  
17-Jun-24 12:30 21-Jun-24 17:30 ATCO RB 7L701 (757s Battle River - 7LA701 tap) live line reclose block for 701L CRU and WMP component replacement (str 423 - 449) 4.21 Days
Continuous		  
17-Jun-24 12:30 21-Jun-24 17:30 ALTALINK RB 701L (223s Strome - 7LA701 tap) live line reclose block for 701L CRU and WMP component replacement (str 423 - 449) 4.21 Days
Daily		  
17-Jun-24 13:30 20-Jun-24 16:30 ALTALINK Outage 799s T1 (799s Coleman) maintenance and bushing replacement 3.13 Days
Continuous		  
18-Jun-24 07:00 22-Jun-24 17:00 EPCOR Outage 1098L (EP 805s Jasper - Poundmaker), EP 805s J2401 (EP 805s Jasper), EP 805s J2407 (EP 805s Jasper) JDS1 LCR 4.42 Days
Continuous		  
18-Jun-24 07:00 18-Jun-24 17:00 EPCOR Outage T2 (Kennedale) Kennedale: TX2 breaker cell inspection 10 Hours
Continuous		  
18-Jun-24 07:00 20-Jun-24 17:00 ALTALINK TE 277s RTU/SCADA (277s Hayter) update RTU database 2.42 Days
Daily		  
18-Jun-24 07:30 18-Jun-24 17:30 ALTALINK RB 900L (17s Benalto - 63s Red Deer) AML crews will be doing barehand training at 900L1 10 Hours
Daily		  
18-Jun-24 08:00 19-Jun-24 11:00 ALTALINK Outage 264s 240kV Bus 1 (264s Elkwater), 264s 452 (264s Elkwater) remove riser from low bus to high bus and install new design with rigid bus in two locations and lower voltage tap on SSTX1 27 Hours
Continuous		  
18-Jun-24 08:00 18-Jun-24 16:00 ENMAX Outage 26.83L (SS-26 - SS-65), 26B138-26.83 (SS-26) HV Breaker Maintenance - 26B138-26.83. 26B138-26.83 Broken Counter - Replace 8 Hours
Continuous		  
18-Jun-24 08:00 18-Jun-24 16:00 ENMAX, ALTALINK Outage 7.82L (42s Sarcee - SS-7) Power Factor Test - 7PT138-7.82 8 Hours
Continuous		  
18-Jun-24 08:00 27-Jun-24 17:00 ALTALINK Outage 677L (305s Acheson - 595s Spruce Grove) Structure replacement. Replace OHSW with OPGW 9.38 Days
Continuous		  
18-Jun-24 08:00 27-Jun-24 17:00 ALTALINK RB 453L (305s Acheson - 367s Harry Smith) work on 677L in vicinity 9.38 Days
Daily		  
18-Jun-24 08:00 18-Jun-24 16:00 ENMAX, ALTALINK IO 7.82L (42s Sarcee - SS-7) power factor test - 7PT138-7.82 8 Hours
Daily		  
18-Jun-24 08:00 18-Jun-24 16:00 ENMAX TE Protection & Control (SS-8) 8 sub Z65 A and B bus differential protection program and test DFR triggers 8 Hours
Continuous		  
18-Jun-24 09:00 18-Jun-24 12:00 ATCO Outage 2060s 701 (2060s Engstrom) prc-005 trip coil testing 3 Hours
Continuous		  
18-Jun-24 09:00 18-Jun-24 16:30 ALTALINK Outage 151s C1 (151s Strathmore) 151s44 low gas and SF6 camera investigation 7.5 Hours
Daily		  
18-Jun-24 09:00 21-Jun-24 17:00 ATCO TE ATCO Telecom Equipment, 893s RTU/SCADA (893s Cavendish) troubleshooting intermittent issue with the IRU radio link between Cappon_T and Cavendish_S.
SUPEP186		 3.33 Days
Continuous		  
18-Jun-24 09:30 18-Jun-24 17:30 ATCO Outage 811s 709 (811s Clairmont Lake) PRC-005 - TRIP COIL TESTING - BREAKER 709 @ 811S
TCM Program. RTXP Test Switch Mitigation and Replacement: 21A/7L39 @ 811S
TCM Program. RTXP Test Switch Mitigation and Replacement: 21B/7L39 @ 811S		 8 Hours
Continuous		  
18-Jun-24 10:00 18-Jun-24 16:00 ATCO Outage 732s 901 (732s Mitsue) prc-005 trip coil testing 6 Hours
Continuous		  
18-Jun-24 11:00 19-Jun-24 14:00 ALTALINK TE AltaLink Telecom Equipment Site access to add inline fuses this will require the Telecom cabinet and all components to be shut down including MPLS, Switch, Firewall, Multitel Fusion etc. 719s supervisory will be OOS for 30 minutes. 27 Hours
Daily		  
18-Jun-24 12:00 18-Jun-24 15:00 ATCO Outage 2060s 702 (2060s Engstrom) prc-005 trip coil testing 3 Hours
Continuous		  
19-Jun-24 07:00 19-Jun-24 16:00 TRANSALTA, ALTALINK Outage 528s Blue Trail Wind Farm, 608AL (528s Blue Trail Wind Farm - 608L tap), 528s 138CB1 (528s Blue Trail Wind Farm), 528s 138MDS3 (528s Blue Trail Wind Farm) maintenance on 138MDS4 at 528s 9 Hours
Daily		  
19-Jun-24 07:00 19-Jun-24 18:00 ALTALINK Outage 812L (65s High River - 812AL tap), 812L (392s Black Diamond - 812AL tap), 812AL (512s Hartell - 812L tap), 512s T1 (512s Hartell) Replace arms and insulators on Structure #179 11 Hours
Daily		  
19-Jun-24 07:00 20-Jun-24 17:00 EPCOR TE 816s Protection & Control (816s Petrolia) protection blocking for commissioning of P2403 1.42 Days
Continuous		  
19-Jun-24 07:30 19-Jun-24 17:30 ALTALINK RB 757L (17s Benalto - 758L tap), 757L (297s Rimbey - 758L tap) AML crews will be doing barehand training at 757L1A 10 Hours
Daily		  
19-Jun-24 07:30 19-Jun-24 17:30 ALTALINK Outage 819L1 (819L Line) required for AML crews will be doing barehand training at 757L1A 10 Hours
Daily		  
19-Jun-24 08:00 19-Jun-24 16:00 ENMAX Outage 6.82L (SS-6 - SS-41), 6B138-6.82 (SS-6) HV Breaker Maintenance - 6B138-6.82 8 Hours
Continuous		  
19-Jun-24 08:00 19-Jun-24 16:00 ALTALINK TE 255s Protection & Control (255s Vulcan) A77/1147AIS, Relay will be taken out of service to update settings and test - Non redundant protection. 8 Hours
Daily		  
19-Jun-24 08:00 19-Jun-24 16:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12), 12.1TR (SS-12) Power Factor Test - 12PT138-Z31 8 Hours
Continuous		  
19-Jun-24 08:00 27-Jun-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink), AltaLink Telecom Equipment DWDM hardware upgrades - 2024 CR&U at 9074R 8.38 Days
Daily		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK TE AltaLink RTU/SCADA (AltaLink), AltaLink Telecom Equipment DWDM hardware upgrades - 2024 CR&U at 9004R 1.38 Days
Continuous		  
19-Jun-24 08:00 20-Jun-24 16:00 ENMAX TE RTU/SCADA (SS-25) SCADA RTU Test - RTU-25.  SCADA Alarm Test - RTU-25 ANN 1.33 Days
Daily		  
19-Jun-24 08:00 19-Jun-24 16:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) Power Factor Test - 12PT138-Z31 8 Hours
Daily		  
19-Jun-24 08:00 20-Jun-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations 1.38 Days
Daily		  
19-Jun-24 09:00 19-Jun-24 12:00 ATCO Outage 2060s 703 (2060s Engstrom) PRC-005 trip coil testing 3 Hours
Continuous		  
19-Jun-24 09:00 19-Jun-24 17:00 ALTALINK Outage 256s C1 (256s Harmattan) weed spraying and cap bank unbalance repair 8 Hours
Daily		  
19-Jun-24 09:30 20-Jun-24 17:30 ATCO Outage 811s 708 (811s Clairmont Lake) PRC-005 - TRIP COIL TESTING - BREAKER 708 @ 811S
TCM Program. RTXP Test Switch Mitigation and Replacement: 21A/7L22 @ 811S
TCM Program. RTXP Test Switch Mitigation and Replacement: 21B/7L22 @ 811S
TCM Program. RTXP Test Switch Mitigation and Replacement: 50BF/708 @ 811S		 1.33 Days
Continuous		  
19-Jun-24 10:00 19-Jun-24 16:00 ATCO Outage 732s 903 (732s Mitsue) PRC-005 trip coil testing 6 Hours
Continuous		  
19-Jun-24 10:00 19-Jun-24 17:00 ATCO TE ATCO Telecom Equipment low bes firewall install 7 Hours
Continuous		  
19-Jun-24 12:00 20-Jun-24 18:00 ALTALINK, Wild Rose Wind 2 Outage 264s 240kV Bus 2 (264s Elkwater), 264s 240kV Bus 3 (264s Elkwater), 264s 89-B1 (264s Elkwater), 264s 352 (264s Elkwater), 264s 252 (264s Elkwater), 264s T1 (264s Elkwater), 264s 52-L1 (264s Elkwater), 264s 89-L1 (264s Elkwater), 264s 289 (264s Elkwater) remove riser from low bus to high bus and install new design with rigid bus in two locations 30 Hours
Continuous		  
19-Jun-24 12:00 19-Jun-24 15:00 ATCO Outage 2060S 704 (2060s Engstrom) PRC-005 trip coil testing 3 Hours
Continuous		  
20-Jun-24 07:00 26-Jun-24 17:00 ALTALINK Outage 74s T2 (74s Janet), 74s 77 (74s Janet) upgrade transformer protection relays 6.42 Days
Continuous		  
20-Jun-24 07:00 26-Jun-24 17:00 ALTALINK TE 74s RTU/SCADA (74s Janet) SCADA configuration update 6.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK Outage 735L (171s Redwater - 233s Beamer) 233s replace VSR with new 233s47 PT. 233s13 switch replacement. 233s DDR install. 735L line and BF protection change @ 233s. 735L line protection change @ 171s. 233s RSLD 1 to be implemented after outage is complete. 8.42 Days
Continuous		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE 171s RTU/SCADA (171s Redwater) cutover new 735L alarms, controls, and statuses to new SCADA system 8.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE 171s RTU/SCADA (171s Redwater) update configuration for 735L protection upgrade 8.42 Days
Daily		  
20-Jun-24 07:00 28-Jun-24 17:00 ALTALINK TE AltaLink Telecom Equipment, 233s Protection & Control (233s Beamer), 171s Protection & Control (171s Redwater) equip 2 new channels between 171s and 233s and decommission the old circuits 8.42 Days
Continuous		  
20-Jun-24 07:30 23-Jun-24 17:30 ALTALINK RB 900L (17s Benalto - 63s Red Deer) crews will be doing barehand training at structure #900L1 3.42 Days
Daily		  
20-Jun-24 07:30 20-Jun-24 17:30 ALTALINK RB 848L (17s Benalto - 848AL tap), 848L (378s Shell Caroline - 848AL tap), 848AL (531s Shell Schrader Creek - 848L tap) crews will be doing barehand training at structure #900L1 10 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 31.84L (SS-31 - SS-32), 32B138-31.84 (SS-32) HV Breaker Maintenance - 32B138-31.84 8 Hours
Continuous		  
20-Jun-24 08:00 07-Oct-24 16:00 Syncrude Outage 1315 (Syncrude Mildred Lake), 1314 (Syncrude Mildred Lake) allow power distribution time to replace the 72 kV cables from plant 31 to C05 substation 109.33 Days
Continuous		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX, ALTALINK Outage 832L (SS-10 - SS-12) Power Factor Test - 10PT138-832. 8 Hours
Continuous		  
20-Jun-24 08:00 20-Jun-24 18:00 ALTALINK TE 264s RTU/SCADA (264s Elkwater) implement SCADA changes for MOD and breaker fail alarm 10 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX, ALTALINK IO 832L (SS-10 - SS-12) Power Factor Test - 10PT138-832. 1TR 8 Hours
Daily		  
20-Jun-24 08:00 20-Jun-24 18:30 ALTALINK TE 277s Protection & Control (277s Hayter) trip testing for new 25kV breakers 10.5 Hours
Daily		  
20-Jun-24 08:00 21-Jun-24 17:00 ALTALINK TE 267s Protection & Control (267s Killarney Lake) revert temporary settings 1.38 Days
Daily		  
20-Jun-24 08:00 20-Jun-24 16:00 ENMAX Outage 12.1TR (SS-12) check reversing switch and oil sampling 8 Hours
Continuous		  
20-Jun-24 09:00 20-Jun-24 17:00 ATCO RB 788s 144kV Bus 700BUS1 (788s Hotchkiss) 701T replacement project,
removal of jumper J1 on 144kv bus at 788s Hotchkiss		 8 Hours
Continuous		  
20-Jun-24 09:30 20-Jun-24 15:30 ATCO Outage 834s 502R (834s Wesley Creek), 834s 501 (834s Wesley Creek) trip coil testing on 502 breaker 6 Hours
Continuous		  
20-Jun-24 10:00 20-Jun-24 16:00 ATCO Outage 732s 904 (732s Mitsue) trip coil testing 6 Hours
Continuous		  
20-Jun-24 10:00 20-Jun-24 17:00 ATCO TE ATCO Telecom Equipment Low Bes Firewall Install, Total outage to IP Network access traffic for up to 90 minutes,
Includes MICHICHI SCADA		 7 Hours
Continuous		  
21-Jun-24 08:00 21-Jun-24 16:00 ENMAX Outage 2.83L (SS-5 - 2.83L tap), 5.9TR (SS-5), 5.10TR (SS-5), 5B138-2.83 (SS-5), 5B138-5BT12 (SS-5), 5MD138-5.9TR (SS-5) substation washing 8 Hours
Continuous		  
21-Jun-24 10:00 17-Jul-24 17:00 ATCO Outage 788s 701T (788s Hotchkiss) remove 701TCS, add new 707 breaker and switch 707A. Add NEW 701T, install jumper J1 to isolate low bus from high bus 26.29 Days
Continuous		  
21-Jun-24 13:00 21-Jun-24 18:00 ENMAX Outage 2.83L (SS-2 - 2.83L tap), 2.83L (SS-13 - 2.83L tap), 13B138-2.83 (SS-13) Outage required to return 2.83L T-TAP 5sub leg. 5 Hours
Continuous		  

Prepared On:   2024-06-12   16:06:22

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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