Alberta Electric System Operator
System Co-ordination Plan
2024-05-24 to 2024-05-31
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 07-Jun-24 17:00 EPCOR Outage T2 (Rossdale), R721 (Rossdale), R723 (Rossdale), RAB2 (Rossdale) rossdale transformer assembly and scaffold build 151.38 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		  
19-Feb-24 11:00 10-Jun-24 17:30 ATCO TE 863S 240kV Breaker Relays, 863S 25kV Breaker Relays disable all breaker fail protection for the duration of the project 112.23 Days
Continuous		  
19-Feb-24 11:00 06-Jun-24 17:30 ATCO TE 863S 240kV Bus Relays install new 900BS1 protection panel 108.23 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		  
25-Mar-24 13:50 31-May-24 17:00 BCH Outage 5CB1 (BCH Selkirk) repair damaged equipment, BC maintenance does not affect the Alberta ATC 67.13 Days
Continuous		 AB-BC
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		  
05-Apr-24 13:00 31-May-24 13:00 EPCOR Outage 330p 12GT7D (330p Genesee) de-energize CPC GSU G7 for CPC to install generator terminal braids 56 Days
Continuous		  
08-Apr-24 10:55 04-Jun-24 17:00 ATCO Outage 716s 701T (716s Lloydminster), 716s 703 (716s Lloydminster) 716s rebuild 57.25 Days
Continuous		  
08-Apr-24 11:00 02-Jun-24 17:00 ATCO Outage 716s 701 (716s Lloydminster) 716s rebuild:
7L749 new line relay install & commission		 55.25 Days
Continuous		  
08-Apr-24 11:00 02-Jun-24 17:00 ATCO Outage 716s 701C (716s Lloydminster) 716s rebuild: 701C new relay install & commission
 55.25 Days
Continuous		  
09-Apr-24 10:00 02-Jun-24 18:00 ATCO TE 716s Protection & Control (716s Lloydminster) settings changes on 7L42 protection for 716S Sub Rebuild closing 700D1 at 716s 54.33 Days
Continuous		  
09-Apr-24 10:00 04-Jun-24 18:00 ATCO TE 751s Protection & Control (751s Hill) settings changes on 7L42 protection for 716S Sub Rebuild closing 700D1 at 716s 56.33 Days
Continuous		  
09-Apr-24 15:00 18-Jun-24 16:00 ALTALINK Outage 151s C1 (151s Strathmore) broken 70.04 Days
Continuous		  
12-Apr-24 17:00 24-May-24 17:00 EPCOR Outage 987s CDS45 (987s Cloverbar) repair of damage 240 kV CVT in order to properly energize 1191L bay 42 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		  
22-Apr-24 09:00 04-Jun-24 17:00 ATCO TE 755s Protection & Control (755s Cordel) removal of old protection relays 43.33 Days
Continuous		  
22-Apr-24 09:00 10-Jun-24 17:00 ATCO TE 972s Protection & Control (972s Tinchebray), 972s RTU/SCADA (972s Tinchebray) PT work for relay upgrade 49.33 Days
Continuous		  
22-Apr-24 09:00 04-Jun-24 17:00 ATCO TE 972s Protection & Control (972s Tinchebray) removal of old protection relays 43.33 Days
Continuous		  
22-Apr-24 11:00 10-Jun-24 17:00 ATCO TE 755s Protection & Control (755s Cordel), 755s RTU/SCADA (755s Cordel) relay upgrade, adding new SCADA points and protection upgrade. 49.25 Days
Continuous		  
23-Apr-24 08:00 28-Jun-24 16:00 ENMAX Outage 41.2TR (SS-41) forced outage - differential protection trip 66.33 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		  
29-Apr-24 13:30 29-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment phone line repair 30.15 Days
Daily		  
30-Apr-24 15:01 10-Jun-24 17:00 ATCO Outage 863s 901T (863s Paintearth) protection upgrade 41.08 Days
Continuous		  
01-May-24 07:00 04-Jun-24 17:30 ALTALINK Outage 326s 240kV Bus 1 (326s Murray lake), 961L (326s Murray lake - 516s Forty Mile), 326s 152 (326s Murray Lake), 326s 352 (326s Murray Lake), 326s 1012 (326s Murray Lake) closing 326s open point 'C' connecting 961L to 326s 34.44 Days
Continuous		  
01-May-24 08:00 04-Jun-24 17:00 ALTALINK TE 326s RTU/SCADA (326s Murray Lake) update configurations 34.38 Days
Continuous		  
01-May-24 18:40 31-May-24 18:00 ALTALINK Outage 266s 1037L FSC1 (266s SC1), 266s 1038L FSC2 (266s SC1) forced outage - cap protection issue 29.97 Days
Continuous		  
02-May-24 09:00 27-May-24 17:30 ATCO TE 883s RTU/SCADA (883s Gregoire) protection upgrade and PLC replacement 25.35 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		  
13-May-24 08:00 30-May-24 16:00 ENMAX Outage 16.61L (SS-16 - SS-27), 16B69-16.61 (SS-16), 27B69-16.61 (SS-27) install OPGW phasing required SW62@27sub 17.33 Days
Continuous		  
13-May-24 08:00 12-Jun-24 18:00 SUNCOR TE 635EDD-1000 Protection & Control (635EDD-1000), 635EDD-1001 Protection & Control (635EDD-1001), 635EDD-1002 Protection & Control (635EDD-1002), 635EDD-1003 Protection & Control (635EDD-1003) FH - SCADA upgrade 30.42 Days
Daily		  
13-May-24 08:00 12-Jun-24 18:00 SUNCOR TE 635EDD-1000 RTU/SCADA (635EDD-1000), 635EDD-1001 RTU/SCADA (635EDD-1001), 635EDD-1002 RTU/SCADA (635EDD-1002), 635EDD-1003 RTU/SCADA (635EDD-1003) FH - SCADA upgrade 30.42 Days
Daily		  
13-May-24 08:00 30-May-24 15:30 ALTALINK Outage 895s T2 (895s Suffield) 895s VR1 failed and needs to be replaced 17.31 Days
Continuous		  
13-May-24 09:00 27-May-24 17:30 ATCO Outage 7L155 (883s Gregoire - 2009s Willow Lake), 883s 701T (883s Gregoire), 883s Gregoire 883s Gregoire protection upgrade 14.35 Days
Continuous		  
15-May-24 07:00 31-May-24 18:00 ALTALINK TE 409s RTU/SCADA (409s Shell Scotford) update configuration for new protection additions 16.46 Days
Daily		  
15-May-24 07:30 29-May-24 18:00 CNRL, ATCO Outage 75-PLH-903 (838s Horizon Mining - 842s Horizon Upgrading), 838s 75-TR-2701 (838s Horizon Mining), 838s 75-TR-2801 (838s Horizon Mining), 842s 75-1903 (842s Horizon Upgrading), 842s 75-TR-4701 (842s Horizon Upgrading), 842s 75-TR-7701 (842s Horizon Upgrading), 838s 75-BC-1911 (838s Horizon Mining), 838s 75-BC-1916 (838s Horizon Mining), 838s 75-BC-1917 (838s Horizon Mining), 838s 75-BC-1918 (838s Horizon Mining), 838s 75-SD-1911B (838s Horizon Mining), 838s 75-SD-1917A (838s Horizon Mining), 838s 75-SD-1917B (838s Horizon Mining), 838s 75-SD-1918A (838s Horizon Mining), 838s 75-SD-1918B (838s Horizon Mining), 838s 75-SD-1916A (838s Horizon Mining), 838s 75-BC-2801 (838s Horizon Mining), 842s 75-1902 (842s Horizon Upgrading), 842s 75-1904 (842s Horizon Upgrading), 842s 75-1905 (842s Horizon Upgrading), 842s 75-1902A (842s Horizon Upgrading), 842s 75-1903A (842s Horizon Upgrading), 842s 75-1903B (842s Horizon Upgrading), 842s 75-1904A (842s Horizon Upgrading), 842s 75-1904B (842s Horizon Upgrading), 842s 75-1905B (842s Horizon Upgrading), 842s 75-903A (842s Horizon Upgrading) 5YR PMS and protective relay upgrades 14.44 Days
Continuous		  
17-May-24 08:00 11-Jun-24 18:00 ATCO, CNRL TE 838s RTU/SCADA (838s Horizon Mining), 842s RTU/SCADA (842s Horizon Upgrading) RTU updates for protective relay upgrade 25.42 Days
Continuous		  
20-May-24 07:00 24-May-24 18:00 ALTALINK TE 244s Protection & Control (244s Bowmanton) update relay settings and test 4.46 Days
Daily		  
20-May-24 07:00 26-May-24 17:00 ALTALINK Outage 503L (268s Whitecourt - 323s Whitecourt Power) maintenance 6.42 Days
Continuous		  
20-May-24 07:00 24-May-24 18:00 ENMAX Outage 26.83L (SS-26 - SS-65), 26B138-26.83 (SS-26) replace existing surge arresters on receiving structures at 26 Sub 4.46 Days
Continuous		  
20-May-24 08:00 27-May-24 16:00 ENMAX Outage 13.3TR (SS-13) 13.3 TR secondary cable replacement 7.33 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		  
20-May-24 08:00 24-May-24 16:00 ENMAX TE Protection & Control (SS-5) 5PT138-Z33 secondary fuse outage, transformer protection upgrade 4.33 Days
Continuous		  
20-May-24 08:00 24-May-24 17:00 ALTALINK TE 321s RTU/SCADA (321s Al Rothbauer) update site RTU alarms/controls for Dunmore Solar project deficiency clean-up 4.38 Days
Daily		  
20-May-24 08:00 26-May-24 18:00 ENMAX Outage 1.82L (SS-1 - SS-5), 5B138-1.82 (SS-5) 5 sub 138kV disconnect switch replacement. SW95, SW82G 6.42 Days
Continuous		  
21-May-24 07:00 26-May-24 17:00 EPCOR Outage 557s T1 (557s Castle Downs), 557s CD2401 (557s Castle Downs), 557s CD2406 (557s Castle Downs), 557s CDAB1 (557s Castle Downs) repair and maintenance 5.42 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 07:00 26-May-24 17:00 EPCOR Outage T3 (Woodcroft), W724 (Woodcroft), W722 (Woodcroft), WAB3 (Woodcroft), WDS6 (Woodcroft) T3 doble and disconnect maintenance 5.42 Days
Continuous		  
21-May-24 07:00 30-May-24 18:00 ALTALINK Outage 701L (223s Strome - 395s North Holden), 395s 701X (395s North Holden) 701L CRU & WMP component replacement (STR 1-111, 187-261) 9.46 Days
Continuous		  
21-May-24 07:00 26-May-24 17:00 ALTALINK Outage 759L (87s Gaetz - 276s Prentiss), 276s T1 (276s Union Carbide Prentiss), 276s 138kV Center Bus (276s Union Carbide Prentiss), 276s 16 (276s Prentiss), 276s 25 (276s Prentiss), 276s 759W (276s Prentiss), 87s 759E (87s Gaetz), 276s 13 (276s Prentiss) upgrade T1 A protections and trip testing from A87/T1 to 276s9, 276s16, 276s25, 276s759W 5.42 Days
Continuous		  
21-May-24 08:00 05-Jun-24 17:00 ALTALINK TE 276s RTU/SCADA (276s Union Carbide Prentiss) sequential configuration updates for upgrade of transformer A protections 15.38 Days
Daily		  
21-May-24 08:00 24-May-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and migrating and commissioning of 756L controls status and alarms controls 3.38 Days
Continuous		  
21-May-24 08:00 27-May-24 16:00 ATCO RB 7L56 (725s Goose River - 738s Virginia Hills), 7L56 (725s Goose River - 813s Little Smoky), 7L56 (738s Virginia Hills - 809s Louise Creek) walk up and climbing inspection 6.33 Days
Continuous		  
21-May-24 08:00 24-May-24 17:00 ALTALINK TE 102s RTU/SCADA (102s Langdon) download new configurations and for any deficiency cleanup, coordinated failover 3.38 Days
Continuous		  
21-May-24 08:00 24-May-24 17:00 ALTALINK TE 102s Protection & Control (102s Langdon) 927L, 924L, 175RAS and 1325LRAS relays & protection work 3.38 Days
Continuous		  
21-May-24 08:30 31-May-24 17:30 ALTALINK RB 172L (83s Taber - 172EL tap), 172L (254s Coaldale - 172EL tap), 172EL (139s Hillridge - 172L tap) FRM component replacement 172L826-1017 and 172EL83-107 - live line work 10.38 Days
Daily		  
21-May-24 09:00 27-May-24 16:00 ATCO Outage 7L32 (813s Little Smoky - 862s South Bezanson) pole replacement from test and treat 6.29 Days
Continuous		  
21-May-24 09:00 27-May-24 12:00 ATCO RB 9L40 (732s Mitsue - 809s Louise Creek) walk up and climbing inspection 6.13 Days
Continuous		  
21-May-24 09:00 24-May-24 17:00 ATCO TE 728s Protection & Control (728s Mercer Hill), 728s RTU/SCADA (728s Mercer Hill) complete all electrical testing, wiring, and commissioning associated with new apparatus, protection and Scada equipment, protection and RTU updates 3.33 Days
Continuous		  
21-May-24 09:00 24-May-24 17:00 BCH RB 5L96 (BCH Selkirk - BCH Vaseux Lake) replace flashed insulators using barehand methods 3.33 Days
Continuous		  
21-May-24 13:00 27-May-24 13:00 ATCO RB 9L20 (755s Cordel - 766s Nevis) replace conductor spacers live line using HEC procedures 6 Days
Daily		  
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		  
21-May-24 13:40 24-May-24 18:00 ATCO Outage 732s 701 (732s Mitsue) forced outage 3.18 Days
Continuous		  
22-May-24 06:00 24-May-24 17:00 ATCO IO ATCO RTU/SCADA, ATCO Telecom Equipment replace SOC2 Cisco ASA 5525-X 2.46 Days
Continuous		  
22-May-24 07:00 27-May-24 18:00 ALTALINK, ATCO Outage 409s 138kV Bus B1 (409s Shell Scotford), 409s T2 (409s Shell Scotford), 856L (409s Shell Scotford - 410s Josephburg), ALC01L (408s Air Liquide Scotford - 409s Shell Scotford), 409s 20 (409s Shell Scotford), 409s 107 (409s Shell Scotford), 409s 856W (409s Shell Scotford), 409s 9 (409s Shell Scotford) install new bus protection 5.46 Days
Continuous		  
22-May-24 07:30 24-May-24 17:00 ALTALINK RB 777L (48s Pocaterra - 245s Seebe) installing a WFSA camera on existing 777L33 and 108 2.4 Days
Daily		  
22-May-24 08:30 31-May-24 17:30 ALTALINK Outage 288s T1 (288s Wolf Creek) urgent repair: investigate IDD emergency alarm on T1 and repair upon findings 9.38 Days
Continuous		  
22-May-24 10:00 24-May-24 16:00 ATCO IO 951s 1213R (951s Thickwood HIlls) testing of spare 1213R-4 reactor 2.25 Days
Continuous		  
23-May-24 07:00 28-May-24 18:00 ALTALINK Outage 69s T2 (69s North Barrhead), 69s T5 (69s North Barrhead) replace 25kV switches. 5.46 Days
Continuous		  
23-May-24 08:00 30-May-24 17:00 ALTALINK TE 69s RTU/SCADA (69s North Barrhead) update configurtaion for MOD addition on 69s25 and 69s50 7.38 Days
Daily		  
23-May-24 08:00 03-Jun-24 16:00 Syncrude Outage UT2 (Aurora) bus duct is required to be isolated for pm & maintenance. 11.33 Days
Continuous		  
24-May-24 07:00 24-May-24 17:00 EPCOR RB 746AL (524s Owens Corning - 746L tap) aerial washing program 10 Hours
Continuous		  
24-May-24 07:00 24-May-24 17:00 ALTALINK RB 746L (731L tap - 746BL tap), 746L (746AL tap - 746BL tap), 731L (38s East Edmonton - 746L tap), 731L (420s Broadmoor - 731L tap) 746AL: reclose block, aerial washing program 10 Hours
Daily		  
24-May-24 08:00 25-May-24 16:00 ENMAX Outage 9.83L (SS-9 - SS-43), 9B138-9.83 (SS-9), 43B138-9.83 (SS-43) sheath and oil testing 1.33 Days
Continuous		  
25-May-24 07:00 27-May-24 10:00 EPCOR Outage 987s GT1 (987s Clover Bar), 987s CGB1 (987s Clover Bar) spring outage 2.13 Days
Continuous		  
26-May-24 07:30 26-May-24 17:30 ALTALINK RB 633L (56s Boyle - 405s Waupisoo) install insulated guy links at structure 4 10 Hours
Daily		  
26-May-24 08:00 26-May-24 16:00 ENMAX, ALTALINK Outage 7.82L (42s Sarcee - SS-7), 7B138-7.82 (SS-7) breaker maintenance, SF6 gas sample 8 Hours
Continuous		  
26-May-24 08:00 26-May-24 16:00 ENMAX, ALTALINK IO 7.82L (42s Sarcee - SS-7) breaker maintenance, SF6 gas sample 8 Hours
Daily		  
26-May-24 08:00 31-May-24 17:00 ALTALINK, DOW Outage 899L (166s Dow Chemical Fort Saskatchewan - 218s Fort Saskatchewan Co-Gen), 166s 899N (166s Dow Chemical Fort Saskatchewan) work on BX-303A 5.38 Days
Continuous		  
26-May-24 08:00 26-May-24 18:00 ALTALINK Outage 514L (396s Pincher Creek - 514BL tap), 514L (513s Lundbreck - 514BL tap), 396s 514N (396s Pincher Creek) urgent south lines to construct bird platform & remove sticks from structures 10 Hours
Daily		  
26-May-24 17:05 31-May-24 18:00 ALTALINK Outage 276s 138kV North Bus (276s Union Carbide Prentiss), 774L (276s Prentiss - 332s Ellis), 276s T2 (276s Union Carbide Prentiss), 276s C1 (276s Union Carbide Prentiss), 276s 16 (276s Prentiss), 276s 774N (276s Prentiss), 276s 8 (276s Prentiss), 276s 3 (276s Prentiss) upgrade protection, trip testing 5.04 Days
Continuous		  
27-May-24 06:30 28-May-24 17:00 ENMAX, ALTALINK RB 833L (SS-2 - SS-12) Altalink outage - working in proximity of line 1.44 Days
Continuous		  
27-May-24 06:30 28-May-24 17:00 ENMAX, ALTALINK RB 833L (SS-2 - SS-12) required for 916L outage due to proximity 1.44 Days
Daily		  
27-May-24 07:00 31-May-24 17:00 ALTALINK, EPCOR RB 809L (320p Keephills - 510s Sunnybrook) aerial washing program 4.42 Days
Continuous		  
27-May-24 07:00 07-Jun-24 17:00 EPCOR, ALTALINK Outage 1059AL (52s East Industrial - 1059L tap), 1059L (38s East Edmonton - 1059AL tap), 1059L (EP 803s Lambton - 1059AL tap), EP 803s L2404 (EP 803s Lambton), EP 803s L2401 (EP 803s Lambton), 52s T1 (52s East Industrial), 52s E2401 (52s East Industrial) E2401 (min oil), L2404 (min oil), L2403 (SF6) breaker maintenance, L2404 CT doble, LDS1 disconnect maintenance and 1059L and L2401, L2404 P&C maintenance 11.42 Days
Continuous		  
27-May-24 07:00 31-May-24 17:00 ALTALINK, EPCOR RB 809L (320p Keephills - 510s Sunnybrook) aerial washing program 4.42 Days
Continuous		  
27-May-24 07:00 28-May-24 18:00 ALTALINK Outage 916L (5s East Calgary - 42s Sarcee), 42s 916E (42s Sarcee) for a LCM project will install phase raisers on bottom phase 1.46 Days
Continuous		  
27-May-24 07:00 28-May-24 17:00 EPCOR Outage 987s C2402 (987s Clover Bar) Cloverbar S/S C2402 bay outage 1.42 Days
Continuous		  
27-May-24 08:00 31-May-24 17:00 ALTALINK TE 535s RTU/SCADA (535s Joffre) download new configurations and migrating and commissioning of new SCADA and LAN Status and alarms 4.38 Days
Continuous		  
27-May-24 08:00 27-May-24 16:00 ENMAX Outage 36B138-36BT3 (SS-36) HV breaker maintenance - 36B138-36BT3 8 Hours
Continuous		  
27-May-24 08:00 30-May-24 17:30 ALTALINK TE 504s RTU/SCADA (504s Queenstown) update RTU for AIS1147 modification 3.4 Days
Daily		  
27-May-24 08:00 30-May-24 16:00 ENMAX Outage 7.1TR (SS-7) transformer power factor test - 7.1TR, secondary cable test, transformer maintenance, relay fault pressure test, check reversing switch 3.33 Days
Continuous		  
27-May-24 08:00 07-Oct-24 16:00 Syncrude Outage 1315 (Syncrude Mildred Lake), 1314 (Syncrude Mildred Lake), 1316 (Syncrude Mildred Lake) allow power distribution time to replace the 72kV cables from Plant 31 to C05 substation 133.33 Days
Continuous		  
27-May-24 08:00 30-May-24 16:00 ENMAX Outage 162.4TR (SS-162) transformer power factor test - 162.4TR, secondary cable test, transformer maintenance, relay fault pressure test, check reversing switch 3.33 Days
Continuous		  
27-May-24 08:00 28-May-24 16:00 ENMAX Outage 9.3TR (SS-9) tap changer inspection - 9.3-TC, oil sampling MT, TC 1.33 Days
Continuous		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 510s DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 511s DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9010R DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9089R DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9000R DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9004R DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9074R DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 12s DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 17s DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 281s DWDM node 3.38 Days
Daily		  
27-May-24 08:00 30-May-24 17:00 ALTALINK TE AltaLink Telecom Equipment upgrade 9520R DWDM node 3.38 Days
Daily		  
27-May-24 09:00 10-Jun-24 17:00 ATCO TE 755s Protection & Control (755s Cordel) PT work for relay upgrade, associated relays will be blocked, CT work on 904CT and 905CT 14.33 Days
Continuous		  
27-May-24 09:00 10-Jun-24 17:00 ATCO TE 972s Protection & Control (972s Tinchebray) PT work for relay upgrade, 87L-21B/9L16, 21B/9L93, and 87L-21B/9L58 will be blocked 14.33 Days
Continuous		  
27-May-24 09:00 06-Jun-24 17:00 ALTALINK TE 63s RTU/SCADA (63s Red Deer) update RTU configuration for new maintenance switch and LTO implementation 10.33 Days
Continuous		  
27-May-24 09:00 06-Jun-24 17:00 ALTALINK TE 17s RTU/SCADA (17s Benalto) update RTU configuration for new maintenance switch and LTO implementation 10.33 Days
Continuous		  
27-May-24 09:00 31-May-24 17:00 BCH Outage 2L294 (BCH A. A. Lambert - BCH Nelway) site prep, long line, drill and blast pole holes for a new mid-span structure installation BC maintenance does not affect the Alberta ATC 4.33 Days
Continuous		 AB-BC
27-May-24 09:30 07-Jun-24 17:00 ALTALINK, EPCOR Outage 1059L (38s East Edmonton - 1059AL tap) EPCOR request for work at East industrial & Lambton 11.31 Days
Continuous		  
27-May-24 10:00 10-Jun-24 16:00 ATCO, GREENGATEP Outage 9L16 (755s Cordel - 972s Tinchebray), 755s 905 (755s Cordel), 755s 904 (755s Cordel), 972s 902 (972s Tinchebray), 972s 903 (972s Tinchebray) upgrade relays and connect new 9LA16 to new 620s Goldeye substation 14.25 Days
Continuous		  
27-May-24 10:00 29-May-24 11:30 ATCO Outage 767s 701 (767s Oyen), 767s Protection & Control (767s Oyen), 7L132 (767s Oyen - 959s Lanfine) install new RAS-B/701T relay inputs 2.06 Days
Continuous		  
27-May-24 10:00 31-May-24 16:00 ATCO TE 767s Protection & Control (767s Oyen), 767s RTU/SCADA (767s Oyen) complete wiring from 701T 9CT and 700PT1 to new RAS-A/701T relay in new panel 7S1. 21A/7L760 and 21A/7L132 4.25 Days
Continuous		  
27-May-24 10:00 29-May-24 11:59 ATCO Outage 905s 701 (905s Meikle) PRC-005 - trip coil testing breaker SF6 GL312 complete testing 2.08 Days
Continuous		  
27-May-24 11:00 30-May-24 17:00 ALTALINK TE 89s RTU/SCADA (89s Ellerslie) replace both failed SMP16 RTU's 3.25 Days
Daily		  
27-May-24 11:00 28-May-24 17:00 ALTALINK TE 89s Protection & Control (89s Ellerslie) relay blocking to assist EPCOR requests 30 Hours
Daily		  
27-May-24 13:00 30-May-24 14:00 ATCO RB 7L121 (917s Horse River - 7LA121 tap) remove old aerial number boards at the top of the structures, assets have been renumbered 3.04 Days
Continuous		  
27-May-24 14:00 30-May-24 17:00 ALTALINK Outage 367s T2 (367S Harry Smith) PRC005 doble, maintenance 3.13 Days
Continuous		  
27-May-24 14:00 27-May-24 16:00 ALTALINK TE 62s RTU/SCADA (62s Brazeau Plant) RTU database update 2 Hours
Daily		  
27-May-24 17:00 28-May-24 07:00 ATCO Outage 890s 701 (890s Melito), 890s 701T (890s Melito) test all 25 kV equipment 14 Hours
Continuous		  
28-May-24 07:00 28-May-24 17:00 ALTALINK TE 409s Protection & Control (409s Shell Scotford) protection outage on A87/138B2 to facilitate the implementation of new B87/138B2 10 Hours
Daily		  
28-May-24 08:00 29-May-24 12:00 ALTALINK Outage 777L (48s Pocaterra - 245s Seebe), 245s 777X (245s Seebe), 48s 777N (48s Pocaterra) 245s777X 1st trip followed by PRC5 breaker maintenance 28 Hours
Continuous		 AB-BC
28-May-24 08:00 28-May-24 16:00 ENMAX Outage 38.83L (SS-38 - SS-39), 39B138-38.83 (SS-39), 38B138-38.83 (SS-38) HV breaker maintenance and SF6 gas sample - 39B138-38.83 8 Hours
Continuous		  
28-May-24 08:00 06-Jun-24 16:00 REDDEER Outage 217s T2 (217s North Red Deer) 14T2 RTD replacement and transformer testing 9.33 Days
Continuous		  
28-May-24 08:00 28-May-24 16:00 ENMAX Outage 24.82L (SS-24 - SS-65), 24B138-24.82 (SS-24), 65B138-D81 (SS-65), 65B138-D82 (SS-65) power factor test - 65PT138-24.82 8 Hours
Continuous		  
28-May-24 08:00 29-May-24 17:00 ALTALINK, TRANSALTA TE AltaLink Telecom Equipment, 258s RTU/SCADA (258s Dow Hydrocarbons), 218s RTU/SCADA (218s Fort Saskatchewan Co-Gen) upgrade 258s MPLS node 1.38 Days
Daily		  
28-May-24 08:00 28-May-24 17:00 ALTALINK, TRANSALTA TE AltaLink Telecom Equipment, 218s RTU/SCADA (218s Fort Saskatchewan Co-Gen), 218s Protection & Control (218s Fort Saskatchewan Co-Gen) 218s MPLS node addition 9 Hours
Daily		  
28-May-24 08:00 28-May-24 16:00 ENMAX TE Protection & Control (SS-8) 8sub 138 kV PT-E5 secondary fuse outage, connect PT circuits to new panels 8 Hours
Continuous		  
28-May-24 08:00 28-May-24 18:00 ALTALINK TE AltaLink Telecom Equipment, AltaLink RTU/SCADA (AltaLink) MPLS upgrade at 9448R and 9448R - 7705 A&B no impact 10 Hours
Daily		  
28-May-24 08:00 28-May-24 17:00 ALTALINK TE 394s Protection & Control (394s Empress) relay outages one relay at a time. 9 Hours
Daily		  
28-May-24 08:30 28-May-24 17:30 ALTALINK Outage 410s 552 (410s Josephburg) 138 kV breaker maintenance 9 Hours
Daily		  
28-May-24 08:30 02-Jun-24 17:30 ALTALINK Outage 62s T7 (62s Brazeau Plant) transformer maintenance 5.38 Days
Continuous		  
28-May-24 10:00 28-May-24 17:00 ATCO TE ATCO Telecom Equipment low bes firewall install 7 Hours
Continuous		  
28-May-24 10:00 28-May-24 12:00 CMH TE Medicine Hat ICCP Outage existing CMH data center switches migrated to new hardware 2 Hours
Continuous		  
28-May-24 10:00 28-May-24 14:00 ATCO TE ATCO Telecom Equipment updating firewalls at several low bes sites 4 Hours
Continuous		  
28-May-24 23:00 30-May-24 07:00 ALTALINK Outage 250p 11 (250p Bighorn Plant) maintenance 1.33 Days
Continuous		  
29-May-24 06:00 30-May-24 18:00 ENMAX, ALTALINK Outage 833L (SS-2 - SS-12), 12B138-833L (SS-12) LCM project: install phase raisers on bottom phase 1.5 Days
Continuous		  
29-May-24 06:00 30-May-24 18:00 ENMAX, ALTALINK Outage 833L (SS-2 - SS-12) Altalink outage. LCM project: install phase raisers on bottom phase 1.5 Days
Continuous		  
29-May-24 06:30 30-May-24 17:30 ALTALINK RB 916L (5s East Calgary - 42s Sarcee) required for 833L outage due to proximity 1.46 Days
Daily		  
29-May-24 07:00 30-May-24 07:00 ALTALINK Outage 250p 22 (250p Bighorn Plant) maintenance 24 Hours
Continuous		  
29-May-24 07:00 29-May-24 17:00 EPCOR TE 805s Protection & Control (805s Jasper), Protection & Control (Garneau), Protection & Control (Meadowlark), Protection & Control (Poundmaker) RAS blocking - relocating fiber 10 Hours
Continuous		  
29-May-24 08:00 29-May-24 16:00 ENMAX Outage 7.84L (SS-7 - SS-36), 7B138-7.84 (SS-7) breaker maintenance, SF6 gas sample 8 Hours
Continuous		  
29-May-24 08:00 30-May-24 16:00 ENMAX Outage 22.81L (SS-22 - SS-39), 22.2TR (SS-22), 22B138-22.81 (SS-22), 39B138-22.81 (SS-39) power factor test - 22B138-22.81-CT, 22B138-22.81 1.33 Days
Continuous		  
29-May-24 08:00 29-May-24 17:00 ALTALINK TE 899s Protection & Control (899s Edgerton) revert temp settings change back to normal when the ATCO work is completed 9 Hours
Daily		  
29-May-24 08:00 30-May-24 16:00 ENMAX Outage 23.3TR (SS-23) tap changer inspection - 23.3-TC, tap changer oil filtration maintenance, oil sampling 1.33 Days
Continuous		  
29-May-24 08:00 29-May-24 16:00 ENMAX TE Protection & Control (SS-8) 8sub 138 kV PT-E7 secondary fuse outage, connect PT circuits to new panels 8 Hours
Continuous		  
29-May-24 08:00 30-May-24 17:00 ALTALINK, DOW TE 166s Protection & Control (166s Dow Chemical Fort Saskatchewan) standard relay maintenance 1.38 Days
Continuous		  
29-May-24 09:00 29-May-24 17:30 ALTALINK Outage 606L (184s Petro-Canada Edmonton - 185s Bretville), 184s 606 (184s Petro-Canada Edmonton), 185s 606 (185s Bretville) breaker maintenance and replace fill valve 8.5 Hours
Daily		  
29-May-24 09:00 30-May-24 17:00 ATCO, ALTALINK Outage 7L230 (69s North Barrhead - 888AL tap), 7L230 (743s Sarah Lake - 888AL tap) replace damaged poles 1.33 Days
Continuous		  
29-May-24 09:00 29-May-24 17:00 ATCO TE ATCO Telecom Equipment replace aprisa link from Goodfish to Kidney lake to trouble shoot connection errors 8 Hours
Continuous		  
29-May-24 09:00 30-May-24 17:00 ATCO, ALTALINK Outage 7L230 (69s North Barrhead - 888AL tap), 888AL (234s Fort Assiniboine - 7L230 tap), 234s 2 (234s Fort Assiniboine), 234s 3 (234s Fort Assiniboine) replace damaged poles from woodpeckers 1.33 Days
Continuous		  
29-May-24 09:00 29-May-24 11:30 Lethbridge TE Lethbridge ICCP Outage Fortigate/FortiSwitch security patching at primary and backup control centres 2.5 Hours
Continuous		  
29-May-24 12:00 31-May-24 17:30 ATCO Outage 905s 702 (905s Meikle) PRC-005 - trip coil testing 2.23 Days
Continuous		  
29-May-24 12:30 31-May-24 14:30 ATCO Outage 6L09 (767s Oyen - 6L21 tap), 767s 601 (767s Oyen) install and commission wiring to new RAS-A/6L09 and RAS-B/6L09 relays from CT601 and 600PT1 2.08 Days
Continuous		  
29-May-24 12:30 30-May-24 17:00 ALTALINK Outage 3L (245s Seebe - 3AL tap), 245s 3E (245s Seebe) 245s3E 1st trip followed by PRC5 brk. maintenance 28.5 Hours
Continuous		  
30-May-24 07:00 31-May-24 17:00 EPCOR Outage 987s C2404 (987s Clover Bar) Cloverbar S/S C2404 bay outage 1.42 Days
Continuous		  
30-May-24 07:30 11-Jun-24 18:00 CNRL, ATCO Outage 75-PLH-904 (838s Horizon Mining - 842s Horizon Upgrading), 838s 75-TR-1701 (838s Horizon Mining), 838s 75-TR-1801 (838s Horizon Mining), 842s 75-TR-8701 (842s Horizon Upgrading), 842s 75-TR-5701 (842s Horizon Upgrading), 842s 75-1904 (842s Horizon Upgrading), 838s 75-BC-1913 (838s Horizon Mining), 838s 75-BC-1914 (838s Horizon Mining), 838s 75-BC-1915 (838s Horizon Mining), 838s 75-BC-1916 (838s Horizon Mining), 838s 904 (838s Horizon Mining) 5YR PMs and Protective Relay Upgrades 12.44 Days
Continuous		  
30-May-24 08:00 30-May-24 12:00 EPCOR Outage 524s T1 (524s Owens Corning) annual substation maintenance 4 Hours
Continuous		  
30-May-24 08:00 30-May-24 16:00 ENMAX Outage 7B138-7BT3 (SS-7) HV breaker maintenance - 7B138-7BT3 8 Hours
Continuous		  
30-May-24 08:00 30-May-24 17:00 ALTALINK, DOW TE AltaLink Telecom Equipment, 166s Protection & Control (166s Dow Chemical Fort Saskatchewan) 166s MPLS node addition 9 Hours
Daily		  
30-May-24 10:00 30-May-24 17:00 ATCO TE ATCO Telecom Equipment IRU microwave link outage and upgrade 7 Hours
Continuous		  
30-May-24 10:00 30-May-24 17:00 ATCO TE ATCO Telecom Equipment low bes firewall install 7 Hours
Continuous		  
31-May-24 07:00 31-May-24 17:00 EPCOR TE 987s Protection & Control (987s Clover Bar) protection block - 72CN10 A protection 10 Hours
Continuous		  
31-May-24 08:00 03-Jun-24 17:00 ALTALINK Outage 733L (179s Gleichen - 428s Namaka) replace crossarms and insulators at structures 250, 251, 252, 264 & 265, bond OHSW at structure 272.and line post install at structure 202 & 203 3.38 Days
Continuous		  
31-May-24 08:00 31-May-24 12:00 ENMAX Outage 2.80L (SS-2 - SS-23), 23.3TR (SS-23), 23B138-2.80 (SS-23), 23MD138-23.3TR (SS-23), SW83 (SS-23) spring substation washing 4 Hours
Continuous		  
31-May-24 08:00 31-May-24 16:00 ENMAX Outage 21.61L (SS-21 - SS-34), 21B69-21.61 (SS-21), 34B69-21.61 (SS-34) install a stub pole for anchoring 8 Hours
Continuous		  
31-May-24 08:00 01-Jun-24 16:00 ENMAX Outage 33.84L (SS-33 - SS-43), 33B138-33.84 (SS-33), 43B138-33.84 (SS-43) sheath and oil testing 1.33 Days
Continuous		  
31-May-24 08:00 31-May-24 16:00 ATCO, PWLP TE 973s Protection & Control (973s Lanes Lake) block protection and run new cables to trouble shoot ground fault 8 Hours
Continuous		  
31-May-24 08:00 31-May-24 17:00 SUNCOR TE 29EDD-2 RTU/SCADA (29EDD-2 Tar Island) updates to 29EDD-2 for 29PT-002 protection and upgrades 29PT-2B. (Garnet) 9 Hours
Continuous		  
31-May-24 12:00 31-May-24 18:00 ENMAX Outage 23.80L (74s Janet - SS-23), 23.4TR (SS-23), 23B138-23.80 (SS-23), SW84 (SS-23), 23MD138-23.4TR (SS-23) spring substation washing, check reversing switch 6 Hours
Continuous		  
31-May-24 12:00 31-May-24 18:00 ATCO Outage 716s 7L42D2 (716s Lloydminster), 7L42 (716s Lloydminster - 751s Hill) 716S Lloyd sub rebuild close in Jumpers to replace 7L42D2 at 716S
 6 Hours
Continuous		  
31-May-24 12:00 31-May-24 18:00 ENMAX IO 23.80L (74s Janet - SS-23) ENMAX spring substation washing, check reversing switch. 6 Hours
Daily		  

Prepared On:   2024-05-23   15:46:19

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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