Alberta Electric System Operator
System Co-ordination Plan
2023-03-30 to 2023-04-07
Approved Outages

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From To Owner Type Element Scheduled Activity Date/Time Comments Interconnection
05-Oct-18 08:00 31-Dec-23 16:00 EPCOR IO C2 (Rossdale) forced outage 1,913.38 Days
Continuous		  
24-Oct-18 01:13 31-Dec-23 16:00 EPCOR IO C1 (Rossdale) forced outage 1,894.66 Days
Continuous		  
05-Jan-21 08:00 01-Jun-23 18:00 SUNCOR Outage Unmodeled Transmission Facility (Suncor) 29PT-69
877.38 Days
Continuous		  
14-Mar-22 14:00 02-Jun-23 18:00 ATCO TE 813s SVC (813s Little Smoky) emergency real time failed relay 445.17 Days
Continuous		  
18-Apr-22 08:00 29-May-23 17:00 ATCO TE 813s Little Smoky 144kV Bus 1, 813s Little Smoky 144kV Bus 2, 813s Little Smoky 240kV Bus 1, 813s Little Smoky 240kV Bus 2 813S Little Smoky rebuild: cutover wiring to the new relays as their corresponding apparatus are out of service 406.38 Days
Continuous		  
18-Apr-22 08:00 29-May-23 17:00 ATCO TE 813s Little Smoky 813S Little Smoky rebuild: cutover wiring to the new relays as their corresponding apparatus are out of service 406.38 Days
Continuous		  
19-Apr-22 08:00 29-May-23 17:00 ATCO TE 813s Little Smoky protection relay work 405.38 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		  
12-Dec-22 03:10 21-Apr-23 17:30 ALTALINK Outage 421s C1 (421s Hays) forced outage due to breaker 421s 30 failure 130.56 Days
Continuous		  
03-Jan-23 07:00 31-Mar-23 17:00 EPCOR TE 330p Genesee, 330p RTU/SCADA (330p Genesee) relay maintenance and updates 87.38 Days
Continuous		  
03-Jan-23 07:00 31-Mar-23 17:00 EPCOR TE 814s Bellamy relay maintenance and updates 87.38 Days
Continuous		  
03-Jan-23 12:00 19-May-23 16:00 ENMAX Outage 14.2C (SS-14) forced outage 136.13 Days
Continuous		  
09-Jan-23 07:00 12-May-23 17:00 EPCOR TE Woodcroft P&C- 72 kV protection relay maintenance 123.38 Days
Continuous		  
09-Jan-23 07:00 07-Apr-23 17:00 EPCOR TE Namao P&C- 72 kV protection relay maintenance 88.38 Days
Continuous		  
09-Jan-23 07:00 07-Apr-23 17:00 EPCOR TE 987s Clover Bar P&C- 72 kV protection relay maintenance 88.38 Days
Continuous		  
12-Jan-23 08:00 01-May-23 08:30 ATCO IO 730S SVS SVS isolation from 730s. COG for construction 108.98 Days
Continuous		  
23-Jan-23 08:00 31-Mar-23 18:00 CNRL, ATCO TE 847s Muskeg River, ATCO TPR Outage transferring teleprotection circuits from 9L66 relay to open bay PLT-260 relays 67.38 Days
Continuous		  
27-Jan-23 15:20 30-Apr-23 16:00 BCH, ALTALINK RB 5L94 (BCH Cranbrook - 102s Langdon), 1201L (520s Bennett - BCH Cranbrook) emergency - BCH disabling recloser 92.99 Days
Continuous		  
13-Feb-23 07:00 02-Jun-23 17:00 EPCOR Outage T2 (Garneau), G725 (Garneau), G726 (Garneau), GAB2 (Garneau), GT2-O (GARNEAU) transformer replacement 109.38 Days
Continuous		  
14-Feb-23 09:30 31-Mar-23 17:30 ATCO TE 772s RTU/SCADA (772s Youngstown) RTU updates 45.29 Days
Continuous		  
21-Feb-23 10:00 28-Apr-23 17:00 ATCO, CNRL TE 847s RTU/SCADA (847s Muskeg River) download RTU program changes for 9L66 line relocation in 847S Muskeg Rive 66.25 Days
Continuous		  
27-Feb-23 09:00 03-Apr-23 17:00 ATCO RB 9L23 (848s Ruth Lake - 977s Salt Creek), 7L71 (848s Ruth Lake - 2082s Dog Rib), 7L71 (718s Parsons Creek - 2082s Dog Rib), 7L47 (718s Parsons Creek - 848s Ruth Lake) stringing new 9L193/9L162 over top of existing lines 7L71, 7L47, 9L23 35.29 Days
Continuous		  
27-Feb-23 11:00 03-Apr-23 10:00 ATCO TE 844s RTU/SCADA (844s AEC Mill) 7L30, 7L31 protection upgrade, RTU upgrade - 144 kV bus
34.92 Days
Continuous		  
01-Mar-23 10:00 31-Mar-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) download changes to RTU and HMI 30.25 Days
Continuous		  
01-Mar-23 10:00 31-Mar-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) download changes to 849S Joslyn RTU and HMI 30.25 Days
Continuous		  
06-Mar-23 07:00 30-Jun-23 17:00 EPCOR TE Meadowlark relay maintenance 116.38 Days
Continuous		  
06-Mar-23 09:00 31-Mar-23 17:30 ATCO TE 7L33 (749s Flyingshot Lake - 7LA33 tap), 7L44 (749s Flyingshot Lake - 845s Big Mountain) relay settings change is required due to telecom outage 2-71107, 2-71108 and 2-70994 25.31 Days
Continuous		  
09-Mar-23 08:00 28-Apr-23 17:00 ATCO TE 2005s RTU/SCADA (2005s Secord) upgrade RTU and HMI programs 50.33 Days
Continuous		  
13-Mar-23 10:00 05-May-23 17:00 ATCO TE 838S Substation RTU RTU downloads 53.29 Days
Continuous		  
15-Mar-23 08:00 01-Apr-23 17:00 Saskpower Outage SASK POWER P1C SPC maintenance 17.38 Days
Continuous		 AB-SK
15-Mar-23 08:00 13-Apr-23 18:00 SUNCOR Outage 29EDD-71 29PT-237 (29EDD-71), 29EDD-71 752-4632 (29EDD-71), 29EDD-71 752-4631 (29EDD-71), 29EDD-71 29PS-249 (29EDD-71 Edd71Sub) maintenance 29.42 Days
Continuous		  
15-Mar-23 10:00 30-Apr-23 17:00 CNRL TE 847s Muskeg River 9L66 relays end to end commissioning with new remote end at 838S Horizon 46.29 Days
Continuous		  
15-Mar-23 18:01 07-Sep-23 18:00 SUNCOR Outage 29EDD-71 752-4651 (29EDD-71) breaker will remain offline for undetermined period of time 176 Days
Continuous		  
16-Mar-23 08:00 07-Apr-23 16:00 ATCO Outage 9L32 (849s Joslyn Creek - 941s Bitumount), 9L66 (847s Muskeg River - 849s Joslyn Creek) stage 2 for 9L66/9L32 reconnection 22.33 Days
Continuous		  
16-Mar-23 10:00 04-Apr-23 17:00 Saskpower Outage SASK POWER P1C SPC maintenance 19.29 Days
Continuous		 AB-SK
20-Mar-23 09:00 31-Mar-23 17:00 ATCO TE 7L84 (722s Crystal Lake - 749s Flyingshot Lake), 722s Crystal Lake modify 7L84 zone 2 total clearing time to 14 cycles (with zone 2 delay reduced to 8 cycles) during the outage 11.33 Days
Continuous		  
20-Mar-23 09:00 31-Mar-23 17:00 ATCO TE 7L84 (722s Crystal Lake - 749s Flyingshot Lake), 749s Flyingshot Lake modify 7L84 zone 2 total clearing time to 14 cycles (with zone 2 delay reduced to 8 cycles) during the outage 11.33 Days
Continuous		  
20-Mar-23 09:30 31-Mar-23 17:00 ALTALINK IO 908L (89s-E816s) Epcor - Advice Petrolia PDS1, PDS13, PDS16 LCR 11.31 Days
Continuous		  
20-Mar-23 09:30 02-Apr-23 17:00 ALTALINK, EPCOR Outage 908L (89s Ellerslie - 816s Petrolia), 1055L (629s Argyll Transfer Station - 816s Petrolia), 816s T1 (816s Petrolia), 816s P2401 (816s Petrolia), 816s P2402 (816s Petrolia), 816s P2403 (816s Petrolia), 816s P2406 (816s Petrolia), 816s PDS13 (816s Petrolia), 816s PDS11 (816s Petrolia), 816s PAB1 (816s Petrolia), 814s BDS20 (814s Bellamy) Petrolia PDS1, PDS11, PDS13, PDS16 LCR 13.31 Days
Continuous		  
20-Mar-23 10:00 05-May-23 17:00 ATCO TE 957s RTU/SCADA (957s McClelland) RTU downloads 46.29 Days
Continuous		  
20-Mar-23 10:00 31-Mar-23 17:30 ATCO TE 802s RTU/SCADA (802s Michichi Creek), 802s 703T (802s Michichi Creek) general wiring and panel work 11.31 Days
Continuous		  
20-Mar-23 12:30 30-Mar-23 17:30 ALTALINK Outage 285s T1 (285s East Camrose) corrosive sulphur oil reclaim 10.21 Days
Daily		  
21-Mar-23 11:00 03-Apr-23 09:00 ATCO Outage 7L56 (725s Goose River - 813s Little Smoky), 813s 708 (813s Little Smoky), 813s 709 (813s Little Smoky) 813s Little Smoky rebuild: wiring panel and relay programming
12.92 Days
Continuous		  
22-Mar-23 07:30 31-Mar-23 08:00 CNRL IO 75-PLH-902 (838s Horizon Mining - 849s Joslyn Creek) ATCO 838s substation expansion work and protective relay upgrades 9.02 Days
Continuous		  
22-Mar-23 07:30 10-Apr-23 18:00 CNRL, ATCO Outage 75-PLH-902 (838s Horizon Mining - 849s Joslyn Creek), 849s 260kV Bus 900BS2 (849s Joslyn Creek), 849s 903 (849s Joslyn Creek), 849s 906 (849s Joslyn Creek), 838s 75-BC-1911 (838s Horizon Mining), 838s 75-BC-1912 (838s Horizon Mining), 838s 75-SD-1911A (838s Horizon Mining), 838s 75-SD-1912B (838s Horizon Mining), 838s 75-SD-902 (838s Horizon Mining) ATCO 9L32-9L66 CNRL- Horizon Project: disconnect existing 75-PLH-902 from Horizon substation 75 and connect new bus Horizon substation 75 19.44 Days
Continuous		  
22-Mar-23 08:00 11-Apr-23 10:30 ATCO Outage 849s 901T (849s Joslyn Creek) outage to 901T at 849s in coordination with 75-PLH-902 to CNRL 20.1 Days
Continuous		  
23-Mar-23 07:00 11-Apr-23 17:00 EPCOR Outage 72DS26 (665s Dome - Strathcona), T1 (Strathcona), S721 (Strathcona), S722 (Strathcona), SAB1 (Strathcona), 665s D721 (665s Dome), 665s DDS17 (665s Dome), 665s D2404 (665s Dome), 665s DAB3 (665s Dome), 665s T3 (665s Dome) protection upgrade cutovers 19.42 Days
Continuous		  
23-Mar-23 10:30 03-Apr-23 10:00 ATCO Outage 733s 702 (733s Simonette), 7L40 (733s Simonette - 813s Little Smoky) emergency breaker gas top up 10.98 Days
Continuous		  
24-Mar-23 08:00 04-Apr-23 16:00 SUNCOR TE 29EDD-1 Millennium install new DFR

11.33 Days
Continuous		  
25-Mar-23 03:17 30-Apr-23 20:00 ATCO Outage 813s SVC (813s Little Smoky) forced outage 36.7 Days
Continuous		  
25-Mar-23 09:00 31-Mar-23 17:00 ATCO RB 9L23 (848s Ruth Lake - 977s Salt Creek) stringing new 9L193/9L162 over top of existing lines 7L71, 7L47, 9L23 6.33 Days
Continuous		  
27-Mar-23 07:00 07-Apr-23 18:00 ALTALINK TE 324s RTU/SCADA (324s Cassils) complete SCADA failover to install JBSEC(s), SEL-2440 alarm board(s) and complete the rewiring in parallel with connections to the existing Fusion RTU 11.46 Days
Daily		  
27-Mar-23 07:00 31-Mar-23 15:00 ALTALINK TE 15s RTU/SCADA (15s Fort Macleod) SCADA configuration update for AIS @ 349s 4.33 Days
Continuous		  
27-Mar-23 07:00 31-Mar-23 17:00 EPCOR Outage PM2405 (Poundmaker) SF6 leak investigation 4.42 Days
Continuous		  
27-Mar-23 07:15 30-Mar-23 17:45 ALTALINK Outage 172L (83s Taber - 172EL tap) FRM component replacement (str827) 3.44 Days
Continuous		  
27-Mar-23 07:30 30-Mar-23 16:30 ALTALINK Outage 102s SVC (102s Langdon), 102s 252 (102s Langdon), 102s 552 (102s Langdon), 102s 7189 (102s Langdon) T4 maintenance, 102s252 low gas repairs, SVC maitenance 3.38 Days
Continuous		  
27-Mar-23 07:30 21-Apr-23 17:30 ALTALINK Outage 421s C1 (421s Hays) install new breaker, 421s30 25.42 Days
Continuous		  
27-Mar-23 08:00 30-Mar-23 17:00 ALTALINK TE 317s RTU/SCADA (317s Baseline) add new I/O cards 3.38 Days
Daily		  
27-Mar-23 09:00 30-Mar-23 17:00 ATCO TE 731s Elmworth PRC-005 relay testing on the following feeder relays: 5L338, 5L337, 5L336
3.33 Days
Continuous		  
27-Mar-23 12:00 30-Mar-23 18:00 ALTALINK Outage 709L (54s Fort Saskatchewan - 172s Sherritt) FRM component replacement 3.25 Days
Continuous		  
27-Mar-23 12:00 30-Mar-23 17:00 ALTALINK TE 320p RTU/SCADA (320P Keephills) upgrade 240 kV building RTU 3.21 Days
Daily		  
27-Mar-23 13:00 31-Mar-23 14:15 ATCO TE 813s Little Smoky 7L57 - relay to re-wire permanent DC feed 4.05 Days
Continuous		  
27-Mar-23 18:00 04-Apr-23 16:00 ALTALINK Outage 275s 2 (275s Jenner) forced outage 7.92 Days
Continuous		  
28-Mar-23 07:30 30-Mar-23 14:30 ALTALINK Outage 161L (255s Vulcan - 504s Queenstown), 853L (504s Queenstown - 853AL tap) replace strain inuslators 2.29 Days
Continuous		  
29-Mar-23 07:00 30-Mar-23 17:00 ALTALINK TE 297s T2 (297s Rimbey) removing the T2 A & B Protections one at a time to conduct trip testing 1.42 Days
Daily		  
29-Mar-23 07:00 30-Mar-23 17:00 ALTALINK TE 297s T1 (297s Rimbey) removing the T1 'B' protection to repair wiring issue 1.42 Days
Daily		  
29-Mar-23 08:00 30-Mar-23 18:00 ENMAX, ALTALINK Outage 932L (74s Janet - SS-162), 162B240-RB135 (SS-162), 162B240-RB136 (SS-162) relay, protection testing - 162RLY240-162.C60-3 1.42 Days
Continuous		  
29-Mar-23 08:00 30-Mar-23 18:00 ALTALINK IO 932L(74s-C162s) Open ended at Enmax sub relay, protection testing - 162RLY240-162.C60-3 1.42 Days
Continuous		  
29-Mar-23 08:00 30-Mar-23 17:00 ALTALINK, ENMAX Outage 1109L (SS-25 - SS-65), 1080L (SS-25 - SS-65), 240kV West Bus (SS-25), 25B240-D136 (SS-25), 25B240-D133 (SS-25), 25B240-D142 (SS-25), 25B240-D139 (SS-25), 25MD240-1109 (SS-25), 25MD240-1080 (SS-25)
, switch configuration of the lines to take 1080L out-of-service and put 1109L in service		 1.38 Days
Continuous		  
29-Mar-23 08:25 31-Mar-23 17:30 ATCO TE 2075s ACF21 (2075s Newell) PRC-005 testing & HMI upgrades 2.38 Days
Continuous		  
29-Mar-23 10:00 30-Mar-23 16:00 Lethbridge TE Lethbridge ICCP Outage an upgrade to the data link circuits between Cisco Router and TELUS 30 Hours
Continuous		  
30-Mar-23 08:00 30-Mar-23 12:00 ALTALINK IO 26.81L/32.83L Enmax-Info spring substation washing 4 Hours
Daily		  
30-Mar-23 08:00 30-Mar-23 17:00 ALTALINK TE 753L (65s High River - 253s Blackie), 65s T2 (65s High River), 65s T3 (65s High River) 753L 821-3, T2 S51NN/T2 & T3 S51NN/T3 relays will be removed from service one at a time for relay testing 9 Hours
Daily		  
30-Mar-23 08:00 30-Mar-23 17:00 ALTALINK TE 427L (63s Red Deer - 247s Piper Creek) 63s A21/L18 & B21/L18 relays will be removed from service one at a time for relay testing 9 Hours
Daily		  
30-Mar-23 08:00 30-Mar-23 17:00 ALTALINK TE 427L (63s Red Deer - 247s Piper Creek) 247s A21/L1 & B21/L1 relays will be removed from service one at a time for relay testing 9 Hours
Daily		  
30-Mar-23 08:30 31-Mar-23 17:30 ATCO TE 766s RTU/SCADA (766s Nevis), 766s Nevis
update settings on RAS-A1/766s and RAS-B1/766s and test signals to 802s Michichi		 1.38 Days
Continuous		  
30-Mar-23 09:00 30-Mar-23 10:00 ATCO TE ATCO Radio Tower Meikle telecom - maintenance 60 Mins
Continuous		  
30-Mar-23 09:00 30-Mar-23 15:00 ATCO TE 800s Friedenstal 144 kV bus PRC-005 relay testing 6 Hours
Continuous		  
30-Mar-23 09:00 30-Mar-23 17:30 ALTALINK Outage 896L (19s Wabamun - 432s Carvel), 19s 896 (19s Wabamun) change 3 grading capacitors 19s896 8.5 Hours
Continuous		  
30-Mar-23 09:00 31-Mar-23 16:00 ATCO TE 7L72 (795s Zama - 828s Sulphur Point), 828s 144kV Bus 700BUS1 (828s Sulphur Point), 828s 144kV Bus 700BUS2 (828s Sulphur Point), 828s 144kV Bus 700BUS3 (828s Sulphur Point), 828s 144kV Bus 700BUS4 (828s Sulphur Point) PRC-005 relay testing 31 Hours
Continuous		  
30-Mar-23 10:00 30-Mar-23 15:30 ALTALINK Outage 254s 443X (254s Coaldale) relocating revenue meter for new future relay space 5.5 Hours
Daily		  
30-Mar-23 17:01 13-Apr-23 07:59 ALTALINK Outage 1080L (SS-25 - SS-65) forced outage 13.62 Days
Continuous		  
30-Mar-23 17:01 13-Apr-23 07:59 ALTALINK IO 1080L(C25s - C65s) OOS urgent replace failed cable 13.62 Days
Continuous		  
31-Mar-23 07:30 31-Mar-23 18:00 ATCO RB 9L155 (838s Horizon Mining - 849s Joslyn Creek) Reclosing blocked on 9L155 (Formally 75-PLH-901) for adjacent work on 75-PLH-902 10.5 Hours
Continuous		  
31-Mar-23 08:00 31-Mar-23 17:00 SUNCOR TE 635EDD-1000 RTU/SCADA (635EDD-1000), 635EDD-1000 replace the existing end of life Firewall pointing towards AESO with a new model 9 Hours
Continuous		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 325s RTU/SCADA (325s Leduc) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 285s RTU/SCADA (285s East Camrose) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 395s RTU/SCADA (395s North Holden) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 288s RTU/SCADA (288s Wolf Creek) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 906s RTU/SCADA (906s Ross Creek) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 140s RTU/SCADA (140s Thompson) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 294s RTU/SCADA (294s Brazeau Outletworks) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 159s RTU/SCADA (159s Colinton) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 157s RTU/SCADA (157s Lac La Biche) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALPAC TE 282s RTU/SCADA (282s Grassland (Alpac)) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 37s RTU/SCADA (37s North Calder) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 305s RTU/SCADA (305s Acheson) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 178s RTU/SCADA (178s Cynthia) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 213s RTU/SCADA (213s Hughenden) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 899s RTU/SCADA (899s Edgerton) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 86s RTU/SCADA (86s Bigstone) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 223s RTU/SCADA (223s Strome) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 54s RTU/SCADA (54s Fort Saskatchewan) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ALTALINK TE 234s RTU/SCADA (234s Fort Assiniboine) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
31-Mar-23 09:00 31-Mar-23 13:00 ENBRIDGE TE 485s RTU/SCADA (485s Black Springs) enable NETCOM to make changes to the sites Router so that this site is able to connect to EMS 3.3 on cutover day 4 Hours
Daily		  
02-Apr-23 07:00 07-Apr-23 17:30 ATCO RB 9L32 (838s Horizon Mining - 941s Bitumount) tying lines into their subs 5.44 Days
Continuous		  
02-Apr-23 07:00 07-Apr-23 17:30 ATCO RB 9L66 (838s Horizon Mining - 847s Muskeg River) tying lines into their subs 5.44 Days
Continuous		  
02-Apr-23 08:00 02-Apr-23 12:00 ENMAX, ALTALINK Outage 24.83L (74s Janet - SS-24), 74s 24.83X (74s Janet) 24 sub - Barlow DTT RTAC commissioning 4 Hours
Continuous		  
02-Apr-23 08:00 02-Apr-23 12:00 ALTALINK IO 24.83L (74s-C24s)open ended at Enmax sub 24 sub - Barlow DTT RTAC commissioning 4 Hours
Daily		  
03-Apr-23 06:00 17-Apr-23 18:00 SUNCOR Outage 29PL9-17 (29EDD-1 Millennium - 29EDD-94 Voyageur), 29EDD-1 952-104 (29EDD-1 Millennium), 29EDD-1 952-105 (29EDD-1 Millennium), 29EDD-94 29-952-9706 (29EDD-94 Voyageur), 29EDD-94 29-952-9705 (29EDD-94 Voyageur), 29EDD-1 29PS-410 (29EDD-1 Millennium), 29EDD-94 29PS-398 (29EDD-94 Voyageur), 29EDD-94 29PS-395 (29EDD-94 Voyageur), 29EDD-94 29PS-394 (29EDD-94 Voyageur) CBR project sync panel tie-in and IMS panel tie-in and bus corrective and preventative maintenance 14.5 Days
Continuous		  
03-Apr-23 07:00 04-Apr-23 17:00 EPCOR Outage 987s CCP7213 (987s Clover Bar) first day- apparatus CCP7213 breaker maintenance, second day- P&C CCP7213 breaker fail op checks 1.42 Days
Continuous		  
03-Apr-23 07:00 14-Apr-23 18:00 ALTALINK TE 138s RTU/SCADA (138s Windy Flats) complete SCADA failover to install JBSEC(s), SEL-2440 alarm board(s) and complete the rewiring of physical security sensors in parallel with connections to the existing Fusion RTU 11.46 Days
Daily		  
03-Apr-23 07:00 20-Apr-23 22:00 CNRL TE 641s RTU/SCADA (641s Pes1) RTU upgrades 17.63 Days
Continuous		  
03-Apr-23 07:00 03-Apr-23 17:00 EPCOR Outage EP 805s J2405 (EP 805s Jasper) P&C- maintenance and op checks 10 Hours
Continuous		  
03-Apr-23 07:00 09-Apr-23 18:00 ALTALINK Outage 870L (262s - 263s) - GOI, 870L (262s Rocky Mountain House - 263s Strachan) Line Clearance Mitigation (LCM) work on Structures #79, 104, 180, 181, 192, 195, 205, 207, 209, 217 & 218. Crew will be installing cross arm extensions and horizontal line posts to existing structures. 6.46 Days
Continuous		  
03-Apr-23 07:00 06-Apr-23 17:00 ALTALINK, EPCOR RB 1044L (EP 805s Jasper - 816s Petrolia) working in proximity 3.42 Days
Continuous		  
03-Apr-23 07:00 06-Apr-23 17:00 ALTALINK, EPCOR RB 1045AL (320p Keephills - 1045L tap), 1045L (310p Sundance - 1045AL tap), 1045L (EP 805s Jasper - 1045AL tap) working in proximity 3.42 Days
Continuous		  
03-Apr-23 07:00 06-Apr-23 17:00 ALTALINK TE 662s RTU/SCADA (662s Hilda) RTU configuration update 3.42 Days
Daily		  
03-Apr-23 07:00 06-Apr-23 17:00 ALTALINK IO 1045L/1045AL (310p-320p-805s) EPCOR - RB Aerial (reclose blocking) - contractor working in proximity 3.42 Days
Continuous		  
03-Apr-23 08:00 04-Apr-23 16:00 ENMAX TE SS-47 relay, protection testing, GE UR 1.33 Days
Continuous		  
03-Apr-23 08:00 03-Apr-23 17:00 ALTALINK Outage 795L(121s-421s) GOI, 795L (121s Brooks - 421s Hays) Replace cross arms and insulators at structure 350 9 Hours
Daily		  
03-Apr-23 08:00 04-Apr-23 16:00 ENMAX Outage 33.2TR (SS-33) U/O voltage alarm, investigations and repairs and oil sampling MT, TC 1.33 Days
Continuous		  
03-Apr-23 09:00 03-Apr-23 17:00 ATCO TE 7L69 (731s Elmworth - 815s Goodfare), 7L34 (815s Goodfare - 886s Updike) relay settings change on 7L69/7L34 protection in conjunction with work on breaker 703 at 815S 8 Hours
Continuous		  
03-Apr-23 09:15 05-Apr-23 15:45 ALTALINK Outage 916L (5s East Calgary - 42s Sarcee), 42s 916E (42s Sarcee) FRM Str 15, 24 2.27 Days
Continuous		  
03-Apr-23 09:15 05-Apr-23 17:45 ALTALINK Outage 1082L (63s - 287s) GOI, 1082L (63s Red Deer - 287s Hazelwood) Replace glass and tower hardware str. 1-60 FRM 2.35 Days
Continuous		  
03-Apr-23 09:15 05-Apr-23 17:45 ENMAX, ALTALINK RB 693L (42s Sarcee - SS-10) required for maintenance on 916L transmission line 2.35 Days
Daily		  
03-Apr-23 09:15 05-Apr-23 17:45 ENMAX, ALTALINK RB 832L (SS-10 - SS-12) required for maintenance on 916L transmission line 2.35 Days
Daily		  
03-Apr-23 09:30 05-Apr-23 15:30 ENMAX, ALTALINK RB 693L (42s Sarcee - SS-10) safety requirement for 916L maintenance 2.25 Days
Daily		  
03-Apr-23 09:30 05-Apr-23 15:30 ENMAX, ALTALINK RB 832L (SS-10 - SS-12) safety requirement for 916L maintenance 2.25 Days
Daily		  
03-Apr-23 09:30 06-Apr-23 17:00 ALTALINK, EPCOR Outage 1056L (89s Ellerslie - 629s Argyll Transfer Station), 240BA2 (629s Argyll Transfer Station - 814s Bellamy) 240BA2 surge arrestor LCR and ADS1 disconnect maintenance 3.31 Days
Continuous		  
03-Apr-23 09:30 05-Apr-23 17:30 ALTALINK RB 925L (63s Red Deer - 74s Janet) safety requirement for 1082L maintenance 2.33 Days
Daily		  
03-Apr-23 09:30 05-Apr-23 17:30 ALTALINK RB 648L (63s Red Deer - 580s Sylvan Lake) safety requirement for 1082L maintenance 2.33 Days
Daily		  
03-Apr-23 09:30 06-Apr-23 17:00 ALTALINK IO 1056L/240BA2 (89s-629s) EPCOR - Advice Argyll: 240BA2 surge arrestor LCR and ADS1 disconnect maintenance 3.31 Days
Continuous		  
03-Apr-23 10:00 03-Apr-23 16:00 ATCO Outage 7L34 (815s Goodfare - 886s Updike), 886s Updike, 815S 703 (815s Goodfare), 886s 701 (886s Updike) PRC-005 trip coil testing 815S 703 6 Hours
Continuous		  
03-Apr-23 10:00 03-Apr-23 16:00 ATCO TE 886s RTU/SCADA (886s Updike) configuration update to eliminate nuisance alarm from 5L709 protection 6 Hours
Continuous		  
03-Apr-23 10:00 28-Apr-23 16:45 ATCO TE 879s Upgrader 701T, 702T protection work 25.28 Days
Continuous		  
03-Apr-23 10:00 14-Apr-23 16:45 ATCO Outage EX1-01L (402s Scotford Expansion One - 879s Upgrader), 879s 701T (879s Scottford Upgrader), 879s 152 (879s Upgrader), 879s 352 (879s Upgrader), 879s 701TD (879s Upgrader), 879s 52-LA (879s Upgrader) breaker maintenance 152 and 352, RTXP switch replacements for bus 1 PRC 005 relay and trip coil testing 11.28 Days
Continuous		  
03-Apr-23 10:00 23-Jun-23 17:00 ATCO TE 849s RTU/SCADA (849s Joslyn Creek) RTU configuration updates 81.29 Days
Continuous		  
03-Apr-23 10:00 14-Apr-23 16:45 ALTALINK IO 879S 701T, EX1-01L - ATCO Info breaker maintenance, RTXP switch replacments for bus 1, PRC 005 relay and trip coil testing 11.28 Days
Continuous		  
03-Apr-23 10:00 06-Apr-23 17:30 ATCO TE 951s Thickwood Hills, ATCO PMU - HMI-A & HMI-B software and firmware updates
- PMU and security system firmware updates
- network switch firmware updates		 3.31 Days
Continuous		  
03-Apr-23 10:01 07-Apr-23 15:29 ATCO Outage 7L40 (733s Simonette - 813s Little Smoky), 813s 709 (813s Little Smoky), 813s 710 (813s Little Smoky), 733s 702 (733s Simonette) emergency breaker gas top up and 813S Little Smoky rebuild - complete 7L40 wiring panel 7P5, 709, 710 CT/PT/P&C wiring, demo existing wiring/cabling, remove old panel 4G relay programming and functionality commission control, alarms and status 4.23 Days
Continuous		  
03-Apr-23 11:00 06-Apr-23 17:00 CNRL TE 838s Horizon Mining implement 3 terminal protection scheme on SEL relay for temporary scheme of Horizon Expansion, Muskeg and Secord connected together 3.25 Days
Continuous		  
03-Apr-23 12:30 03-Apr-23 17:00 ALTALINK TE 63s Red Deer T2 - relay maintenance 4.5 Hours
Daily		  
03-Apr-23 12:30 03-Apr-23 17:00 ALTALINK IO 61s Lodgepole site inspection meter reseal and PRC maintenance BAT 27/BAT RIL Info 4.5 Hours
Daily		  
03-Apr-23 12:30 04-Apr-23 17:00 ALTALINK TE 28s West Brooks relay maintenance 28.5 Hours
Daily		  
03-Apr-23 12:30 04-Apr-23 17:00 ALTALINK TE 28s RTU/SCADA (28s West Brooks) investigating broken antenna coaxial cable at the arbiter, cable replacement 28.5 Hours
Daily		  
04-Apr-23 07:00 06-Apr-23 17:00 ALTALINK TE 225s Magrath 225L - replace relay output card 2.42 Days
Continuous		  
04-Apr-23 07:00 04-Apr-23 13:00 CMH, ALTALINK Outage 15L (MHS-7 Brier Park - MHS-9 South Saskatchewan), 882L (MHS-7 Brier Park - 321s Al Rothbauer), MHS-7 138-T71 (MHS-7 Brier Park), MHS-7 MH69-706 (MHS-7 Brier Park), MHS-7 MH138-707 (MHS-7 Brier Park) replace CVT disconnect switches: REV_PT_A/B/C, 138CVT_72A/B/C, 138CVT_74A, 69CVT_75A 6 Hours
Continuous		  
04-Apr-23 07:30 04-Apr-23 18:00 ALTALINK, ENBRIDGE Outage 703L (377s AML Hardisty - 703BL tap), 703L (213s Hughenden - 703BL tap), 703BL (329s HRT Express - 703L tap), 377s 17 (377s AML Hardisty), 329s HRT-S2 (329s Hrt Express), 329s PTX-101 (329s Hrt Express) fix 40-degree hotspot on 377s18 10.5 Hours
Daily		  
04-Apr-23 07:30 07-Apr-23 09:30 ALTALINK Outage 523s 138kV Bus 1 (523s Bullshead), 600L (404s Peace Butte - 523s Bullshead), 880L (321s Al Rothbauer - 523s Bullshead), 523s T1 (523s Bullshead), 523s C1 (523s Bullshead), 523s 552 (523s Bullshead), 523s 880 (523s Bullshead), 404s 600 (404s Peace Butte), 404s 12 (404s Peace Butte), 404s T2 (404s Peace Butte), 404s T1 (404s Peace Butte) 404sT1 Doble, maintenance, and leak fix, 404s600 breaker maintenance, 523s1, 523s17, & 523s18 switch replacements 3.08 Days
Continuous		  
04-Apr-23 07:30 05-Apr-23 18:00 ALTALINK Outage 275s T3 (275s Jenner), 601L (230s Wardlow - 275s Jenner), 230s T1 (230s Wardlow), 230s 601 (230s Wardlow), 275s 83 (275s Jenner) 230s T1 and 275s T3 Doble and maintenance, repair 275s601 DC ground and 275s84 neutral and 275s83 breaker maintenance 1.44 Days
Continuous		  
04-Apr-23 08:00 04-Apr-23 17:00 ALTALINK, CMH Outage 882L (MHS-7 Brier Park - 321s Al Rothbauer), 321s 252 (321s Al Rothbauer) implement new 'Init DDR' from 11(96/25SC)/252, connect L2/252 CT from A87/138B1 9 Hours
Daily		  
04-Apr-23 08:00 04-Apr-23 18:00 ALTALINK TE AltaLink Radio Tower, 159s RTU/SCADA (159s Colinton) 9159R - upgrade MPLS node 10 Hours
Daily		  
04-Apr-23 08:00 04-Apr-23 17:00 ALTALINK TE 61s Lodgepole T2 cross block setting change 9 Hours
Daily		  
04-Apr-23 08:00 04-Apr-23 16:00 ALTALINK Outage 121s T2 (121s Brooks) remove bird cover from 25 kV bushings on T2 transformer for measurement then re-install them 8 Hours
Daily		  
04-Apr-23 08:00 15-Apr-23 20:00 Syncrude Outage 4345 (Syncrude Mildred Lake), 4435 (Syncrude Mildred Lake), 435 (Syncrude Mildred Lake) maintenance and repairs 11.5 Days
Continuous		  
04-Apr-23 08:00 04-Apr-23 17:00 Med Hat IO AltaLink 882L 321s252 GOI, 321s 252 (321s Al Rothbauer) 9 Hours
Continuous		  
04-Apr-23 08:00 04-Apr-23 12:00 ALTALINK TE 257s RTU/SCADA (257s Hull) to ensure the new 3.3 EMS connects to sites in the field - coordinated testing with AESO EMS group 4 Hours
Daily		  
04-Apr-23 08:00 05-Apr-23 16:00 ALTALINK TE 368s RTU/SCADA (368s Burdett) update of RTU and testing for Enbridge project 1.33 Days
Continuous		  
04-Apr-23 08:00 05-Apr-23 16:00 ALTALINK TE 368s Burdett relays functional trip testing 1.33 Days
Continuous		  
04-Apr-23 08:00 04-Apr-23 18:00 ALTALINK Outage 190L (17s Benalto - 320p Keephills), 17s 1 (17s Benalto), 17s 2 (17s Benalto), 17s 190N (17s Benalto) urgent repairs to 17s190N 10 Hours
Continuous		  
04-Apr-23 08:30 04-Apr-23 12:30 ATCO, ALTALINK Outage 7L129 (526s Buffalo Creek - 7LA129 tap), 526s 152 (526s Buffalo Creek) 1st trip and PRC5 maintenance 4 Hours
Daily		  
04-Apr-23 08:30 04-Apr-23 12:30 ATCO IO 7L129 Altalink 526s152 (7L129-Open) 1st trip and PRC5 maintenance 4 Hours
Continuous		  
04-Apr-23 10:00 21-Apr-23 16:00 ATCO TE 802s RTU/SCADA (802s Michichi Creek), 802s Michichi Creek 7L128, 7L171, new 700BS1 protection relay addition, updates to all 144 kV line CT configurations, breaker fail relay updates and minor wiring 17.25 Days
Continuous		  
04-Apr-23 12:00 14-Apr-23 16:00 ATCO TE 827s RTU/SCADA (827s Cranberry Lake) DC charger update 10.17 Days
Continuous		  
04-Apr-23 12:31 04-Apr-23 17:30 ATCO, ALTALINK Outage 7L50 (526s Buffalo Creek - 491L tap), 526s 252 (526s Buffalo Creek) 1st trip and PRC5 maintenance 4.98 Hours
Daily		  
04-Apr-23 12:31 04-Apr-23 13:30 ATCO IO 7L50 AltaLink 526s 1st trip and PRC5 maintenance 59 Mins
Continuous		  
04-Apr-23 13:00 11-Apr-23 13:00 ALTALINK TE 394s RTU/SCADA (394s Empress) add new controls and alarms on 427L 7 Days
Continuous		  
04-Apr-23 13:00 05-Apr-23 17:30 ALTALINK Outage 65s T3 (65s High River), 65s 54 (65s High River) 65sVT8 leaking urgent replacement 28.5 Hours
Continuous		  
04-Apr-23 19:00 16-Apr-23 19:00 EPCOR Outage 113s T1 (113s Inland Cement) transformer doble and bus-duct inspection 12 Days
Continuous		  
05-Apr-23 07:00 05-Apr-23 18:00 ATCO IO 7L749 Please be advised AltaLink had scheduled 749L (899s-749L118D) outage - April 5 – 07:00 to 18:00.

• The outages leaves some Atco substations (A880s Briker, A716s Lloydminster, A751s Hill, A705s Kitscoty) radially connected to the AIES.
•
• To mitigate this risk, Atco may need to re-dispatch EATL to have a higher south-north power order		 11 Hours
Continuous		  
05-Apr-23 07:00 05-Apr-23 18:00 ALTALINK Outage 749L (899s Edgerton - 749AL tap) re-tie OHSW at structure 267 and hardware tighten structure 269. 11 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 18:00 Syncrude TE ICCP Server Outage SCADA - Server Update
Whole Syncrude Visibility Loss		 10 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 12:00 ALTALINK IO 2.80L (C2s - C23s) Enmax - Info spring substation washing 4 Hours
Continuous		  
05-Apr-23 08:00 11-Apr-23 18:00 SUNCOR Outage 29EDD-34, 29EDD-34 29-952-133 (29EDD-34), 29EDD-34 29-952-132 (29EDD-34), 29EDD-34 29PT-340 (29EDD-34) Upgrade SEL330 Ground fault relay and Test for 29PT-340 6.42 Days
Continuous		  
05-Apr-23 08:00 18-Apr-23 18:00 SUNCOR Outage, TE 29EDD-34, 29EDD-34 Edd34Sub One element out of service at a time to change relay settings on
RELAY,PROTECTION,A-87B,BE187B,29PP-45
RELAY,PROTECTION,51G-59G,SE-330,29PR-69;
RELAY,PROTECTION,A-87T,1MRK,FOR29PT-341;
RELAY, PROTECTION,51G-59G,SE330,29PR-67;
RELAY,PROTECTION,A-87T,1MRK,FOR29PT-340;
RELAY,PROTECTION,A-87T,T60,
RELAY,PROTECTION,74NGR,C60,29PT340/341;
RELAY,PROTECTION,B-87T,SEL-387,29PT340;
RELAY,PROTECTION,B-87T,SEL-387,29PT341
All of the outages being reported will have either redundant feeds and/or redundant protection or upstream protection.
Any rolling outages are specified to have one element out at a time.		 13.42 Days
Continuous		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 431s RTU/SCADA (431s Hussar), AltaLink Radio Tower 9456R - failed unit on radio requires replacement 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 64s East Crossfield 752L relay maintenance 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 64s RTU/SCADA (64s East Crossfield) LAN has locked up and requires a short RTU outage to reboot 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 99s RTU/SCADA (99s North St. Albert) replace LAN switch 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 12:00 ALTALINK TE 252s RTU/SCADA (252s Jarrow) to ensure the new 3.3 EMS connects to sites in the field - coordinated testing with AESO EMS group 4 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 510s Sunnybrook relay maintenance 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 12:00 ALTALINK TE 447s RTU/SCADA (447s Enchant) to ensure the new 3.3 EMS connects to sites in the field - coordinated testing with AESO EMS group 4 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 16:00 ALTALINK Outage 121sT5(Tx18407) GOI, 121s T5 (121s Brooks) Remove bird cover from 25kv bushings on T5 transformer for measurement then re-install them 8 Hours
Daily		  
05-Apr-23 08:00 06-Apr-23 16:00 ATCO TE 951s RTU/SCADA (951s Thickwood Hills), ATCO Radio Tower Thickwood Hills_S-Telecom - network switches updating to a new version of firmware 1.33 Days
Continuous		  
05-Apr-23 08:00 05-Apr-23 16:00 ENMAX Outage 36.3TR (SS-36) relay, protection testing, 86T 36.3TR 8 Hours
Continuous		  
05-Apr-23 08:00 05-Apr-23 17:00 ALTALINK TE 63s Red Deer T1 50/51A,B,C/T1 and T2 50/51A,B,C/T2 relay maintenance 9 Hours
Daily		  
05-Apr-23 08:00 05-Apr-23 16:00 ENMAX Outage 35.2TR (SS-35) replace oil temp RTD, Oil sampling MT, TC, check reversing switch 8 Hours
Continuous		  
05-Apr-23 08:00 05-Apr-23 16:00 ALTALINK TE 510s MPLS - RTU Card replacement 8 Hours
Daily		  
05-Apr-23 10:00 05-Apr-23 12:00 ATCO Outage 815S 706, 815S 706C, 815s 706C (815s Goodfare) PRC-005 trip coil testing breaker 815S 706 2 Hours
Continuous		  
05-Apr-23 12:01 05-Apr-23 14:00 ATCO Outage 815s 705C (815s Goodfare) trip coil testing breaker 815S 705 (PRC-005) 119 Mins
Continuous		  
05-Apr-23 23:00 06-Apr-23 03:00 ALTALINK Outage 62s 11 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
06-Apr-23 03:00 06-Apr-23 07:00 ALTALINK Outage 62s 12 (62s Brazeau Plant) maintenance 4 Hours
Daily		  
06-Apr-23 07:00 06-Apr-23 17:30 ALTALINK TE 38s RTU/SCADA (38s East Edmonton) update RTU configuration 10.5 Hours
Daily		  
06-Apr-23 08:00 06-Apr-23 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, 23 Sub SW 82 - retrieve nameplate info, check reversing switch 4 Hours
Continuous		  
06-Apr-23 08:00 06-Apr-23 16:00 ENMAX Outage 31.1C (SS-31) relay, protection testing, 31RLY138 - 86 lockouts 31RLY138-31CAP 8 Hours
Continuous		  
06-Apr-23 10:00 06-Apr-23 16:00 ATCO TE 886s Updike PRC-005 - 701T relay testing 6 Hours
Continuous		  
06-Apr-23 12:00 06-Apr-23 18:00 ENMAX Outage 23.80L (74s Janet - SS-23), 23.4TR (SS-23), 23B138-23.80 (SS-23), 23MD138-23.4TR (SS-23), SW84 (SS-23) spring substation washing, 23.4TR MD and SW - retrieve nameplate info, check reversing switch 6 Hours
Continuous		  
06-Apr-23 12:00 06-Apr-23 18:00 ALTALINK Outage 74s23_80 (23_80L) Open Advice for Enmax spring substation washing 6 Hours
Daily		  
07-Apr-23 07:00 12-Apr-23 17:00 ALTALINK Outage 394s T1 (394s Empress) install new single-phase PT on the line side of 394s64, add CT’s from T1 to new protections. 5.42 Days
Continuous		  
07-Apr-23 15:30 17-Apr-23 09:00 ATCO Outage 7L40 (733s Simonette - 813s Little Smoky), 813s 709 (813s Little Smoky), 813s 710 (813s Little Smoky) 813S Little Smoky rebuild - complete 7L40 wiring panel 7P5, 709, 710 CT/PT/P&C wiring, demo existing wiring/cabling, remove old panel 4G relay programming and functionality commission control, alarms and status 9.73 Days
Continuous		  
07-Apr-23 16:01 30-Apr-23 16:00 ATCO Outage 9L32 (849s Joslyn Creek - 941s Bitumount), 9L66 (847s Muskeg River - 849s Joslyn Creek) stage 3 for 9L66/9L32 reconnection 23 Days
Continuous		  

Prepared On:   2023-03-29   14:41:10

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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