Alberta Electric System Operator | |
System Co-ordination Plan | |
2025-06-20 to 2025-06-27 | |
Approved Outages |
Previous Version | |
Download CSV |
From | To | Owner | Type | Element | Scheduled Activity | Date/Time Comments | Interconnection |
---|---|---|---|---|---|---|---|
05-Oct-18 08:00 | 30-Aug-25 16:00 | EPCOR | IO | C2 (Rossdale) | forced outage | 2,521.33 Days
Continuous |
|
24-Oct-18 01:13 | 30-May-27 16:00 | EPCOR | IO | C1 (Rossdale) | forced outage | 3,140.62 Days
Continuous |
|
27-Nov-23 08:00 | 01-Aug-25 16:00 | ENMAX | Outage | 32.2TR (SS-32) | 32 sub 32.2TR 8 kV bus switchgear demolition | 613.29 Days
Continuous |
|
26-Jul-24 10:00 | 31-Jul-26 16:00 | ATCO | Outage | 826s 504R (826s Marguerite Lake) | emergency removal to replace failed 502R @834S | 735.25 Days
Continuous |
|
23-Aug-24 13:45 | 30-Jun-26 14:29 | ALTALINK | Outage | 157s C1 (157s Lac La Biche) | forced outage | 676.03 Days
Continuous |
|
03-Jan-25 07:00 | 27-Jun-25 17:00 | EPCOR | TE | 805s Protection & Control (805s Jasper), 805s RTU/SCADA (805s Jasper) | protection blocking for P&C maintenance at Jasper | 175.38 Days
Continuous |
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24-Jan-25 00:00 | 31-Dec-25 16:00 | ALTALINK | Outage | 74s C3 (74s Janet) | forced outage | 341.67 Days
Continuous |
|
10-Feb-25 00:00 | 23-Dec-25 23:00 | ATCO, ALTALINK | IO | 840s McNeill Station, 830L (562s Cypress - 840s McNeill Station), 840s 701T (840s McNeill Station), 840s 901T (840s McNeill Station) | available for emergency use only | 316.96 Days
Continuous |
AB-SK |
11-Feb-25 10:00 | 23-Jul-25 16:00 | ATCO | TE | 940s Protection & Control (940s Beartrap) | relay testing | 162.21 Days
Continuous |
|
11-Mar-25 00:00 | 31-Dec-25 16:00 | ALTALINK | Outage | 377s 473C (377s AML Hardisty) | forced outage | 295.71 Days
Continuous |
|
18-Mar-25 14:00 | 17-Mar-26 17:30 | ALTALINK | Outage | 217s C1 (217s North Red Deer) | cap. bank unavailable and cannot be energized due to Koncar CTs being present | 364.15 Days
Daily |
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20-Mar-25 08:00 | 20-Mar-26 17:00 | ALTALINK | Outage | 263s C1 (263s Strachan) | forced outage | 365.38 Days
Continuous |
|
20-Mar-25 08:00 | 20-Mar-26 17:00 | ALTALINK | Outage | 256s C1 (256s Harmattan) | forced outage | 365.38 Days
Continuous |
|
31-Mar-25 07:00 | 03-Oct-25 17:00 | EPCOR | Outage | 987s T1 (987s Clover Bar), 987s CCP7213 (987s Clover Bar), 987s CCP7214 (987s Clover Bar) | Cloverbar - TX1 LCR | 186.42 Days
Continuous |
|
31-Mar-25 07:00 | 29-Aug-25 17:00 | EPCOR | TE | 987s Protection & Control (987s Clover Bar) | Cloverbar: protection blocking, 240 kV bus 3 differential for TX1 LCR duration | 151.42 Days
Continuous |
|
31-Mar-25 07:00 | 04-Jul-25 17:00 | EPCOR | TE | Protection & Control (Woodcroft) | Woodcroft: protection blocking for merging unit and protection upgrade. | 95.42 Days
Continuous |
|
12-May-25 08:00 | 29-Jun-25 16:00 | ENMAX | Outage | 3.84L (SS-3 - SS-13), 3B138-3.84 (SS-3), 13B138-3.84 (SS-13) | complete reconductoring of 3.84 line | 48.33 Days
Continuous |
|
14-May-25 04:01 | 14-Jul-25 07:30 | ALTALINK | Outage | 799s T3 (799s Coleman) | replace T3 | 61.15 Days
Continuous |
|
14-May-25 08:00 | 10-Feb-26 16:00 | ENMAX | TE | Protection & Control (SS-32) | 32sub 138kV autoswitching protection outage | 272.38 Days
Continuous |
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21-May-25 16:00 | 08-Jul-25 17:00 | ATCO | RB | 7L20 (810s Dome Cutbank - 7L228 tap), 7L80 (740s H.R. Milner - 857s Kakwa Ridge), 7L80 (733s Simonette - 857s Kakwa Ridge) | due to damaged structure on 7L20 | 48.04 Days
Continuous |
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25-May-25 07:00 | 01-Aug-25 17:00 | EPCOR | Outage | 987s GT2 (987s Clover Bar) | maintenance | 68.42 Days
Continuous |
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29-May-25 17:31 | 30-Jun-25 00:00 | BHE Canada | Outage | 120s C1 (120s Picture Butte) | forced outage | 31.27 Days
Continuous |
AB-MATL |
01-Jun-25 14:44 | 27-Jun-25 17:00 | ATCO | Outage | 7L94 (827s Cranberry Lake - 878s Kidney Lake) | forced outage due to wildfire | 26.09 Days
Continuous |
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02-Jun-25 07:00 | 27-Jun-25 17:00 | EPCOR | Outage | 557s T1 (557s Castle Downs) | S/S Tx1 bay outage | 25.42 Days
Continuous |
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02-Jun-25 09:00 | 24-Jun-25 20:00 | SUNCOR | TE | 29EDD-94 RTU/SCADA (29EDD-94 Voyageur), Suncor PMU | fiber circuit testing at 29EDD-94 to investigate/fix the issues on PMU data | 22.46 Days
Continuous |
|
02-Jun-25 10:00 | 20-Jun-25 17:30 | ATCO | TE | 813s Protection & Control (813s Little Smoky), 813s RTU/SCADA (813s Little Smoky) | update DFR for AESO streaming , replace 700PT disconnects , wire 700PTY2 to DFR2 , replace 704PT disconnects , wire 704PTY2 to DFR2 and install new satellite clock - SCADA updates |
18.31 Days
Continuous |
|
08-Jun-25 15:00 | 25-Nov-25 15:30 | ALTALINK | Outage | 397s 864W (397s Benbow) | new 864L line construction, new 397s48 (VT6) install | 170.06 Days
Continuous |
|
08-Jun-25 15:00 | 25-Jun-25 07:59 | ALTALINK | Outage | 355s T1 (355s Chevron Knight), 355s T2 (355s Chevron Knight) | maintenance, salvage 4.16kV cable bus associated with T2 | 16.71 Days
Continuous |
|
09-Jun-25 07:00 | 20-Jun-25 17:00 | EPCOR | Outage | 657s T2 (657s Summerside) | Summerside - TX2 DGA LCR | 11.42 Days
Continuous |
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09-Jun-25 07:00 | 27-Jun-25 17:00 | EPCOR | Outage | 52s T1 (52s East Industrial), 52s E2401 (52s East Industrial) | transformer T1 protection upgrade cutovers | 18.42 Days
Continuous |
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09-Jun-25 07:00 | 20-Jun-25 17:00 | EPCOR | Outage | T3 (Woodcroft), W722 (Woodcroft) | T3 zone protection upgrade cutovers | 11.42 Days
Continuous |
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09-Jun-25 07:00 | 01-Aug-25 17:00 | EPCOR | TE | 330p Protection & Control (330p Genesee) | 138/500 kV protection blocking for relay maintenance | 53.42 Days
Continuous |
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09-Jun-25 07:00 | 15-Aug-25 17:00 | EPCOR | TE | Protection & Control (Poundmaker) | protection blocking for relay maintenance | 67.42 Days
Continuous |
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09-Jun-25 13:30 | 30-Jun-25 18:00 | ATCO | Outage | 716s 701C (716s Lloydminster) | emergency maintenance | 21.19 Days
Continuous |
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10-Jun-25 10:00 | 21-Jun-25 12:00 | ALTALINK | Outage | 1012L (326s Murray Lake - 516s Forty Mile) | complete the bus tie scope at the substation | 11.08 Days
Continuous |
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12-Jun-25 08:00 | 23-Jun-25 17:00 | ATCO | TE | 808s Protection & Control (808s Procter & Gamble) | 7L13 21B relay replacement | 11.38 Days
Continuous |
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12-Jun-25 08:00 | 23-Jun-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain), 845s RTU/SCADA (845s Big Mountain) | 7L13 21B relay replacement and RTU changes required to incorporate new 21B relay | 11.38 Days
Continuous |
|
13-Jun-25 17:00 | 11-Feb-26 17:00 | EPCOR | Outage | T3 (Rossdale) | Rossdale - TX3 LCR | 243.04 Days
Continuous |
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13-Jun-25 20:01 | 25-Jun-25 20:00 | SUNCOR | Outage | 29PL6-2 (30EDD-1 - 29EDD-55), 30EDD-1 622T (30EDD-1), 30EDD-1 626 (30EDD-1), 30EDD-1 625 (30EDD-1), 30EDD-1 624 (30EDD-1), 30EDD-1 622TD (30EDD-1), 30EDD-1 29PL6-2CS (30EDD-1) | 5 year preventive maintenance | 12 Days
Continuous |
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14-Jun-25 08:00 | 30-Jun-25 18:00 | ALTALINK | Outage | 38s C2 (38s East Edmonton) | forced outage | 16.42 Days
Daily |
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16-Jun-25 07:00 | 20-Jun-25 17:00 | EPCOR | Outage | 1164L (816s Petrolia - EP Riverview), RW2402 (EP Riverview), RW2401 (EP Riverview), 816s P2403 (816s Petrolia), 816s P2404 (816s Petrolia) | 1164L zone doble and relay maintenance | 4.42 Days
Continuous |
|
16-Jun-25 07:00 | 20-Jun-25 17:00 | EPCOR | Outage | 72RV2 (EP 511s Victoria - Rossdale), RV728 (Rossdale), EP 511s V721 (EP 511s Victoria), EP 511s V729 (EP 511s Victoria), EP 511s VDS1 (EP 511s Victoria) | doble and disconnect maintenance | 4.42 Days
Continuous |
|
16-Jun-25 07:00 | 21-Jun-25 17:00 | EPCOR | Outage | 746AL (524s Owens Corning - 746L tap), 524s 6 (524s Owens Corning), 524s T1 (524s Owens Corning) | TX1 bushing replacement and 746AL corona ring Install | 5.42 Days
Continuous |
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16-Jun-25 07:00 | 23-Jun-25 18:00 | ATCO, CNRL | Outage | 859s 702T (859s Primrose) | 702T full testing including protections | 7.46 Days
Continuous |
|
16-Jun-25 07:00 | 22-Jun-25 19:00 | ATCO | RB | 9L20 (755s Cordel - 766s Nevis) | to complete stringing activities on CETO project adjacent to 9L20 | 6.5 Days
Daily |
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16-Jun-25 07:00 | 20-Jun-25 16:00 | ALTALINK | Outage | 133s T1 (133s Stelco Edmonton), 133s T2 (133s Stelco Edmonton), 133s 1 (133s Stelco Edmonton), 133s 2 (133s Stelco Edmonton) | install grounds | 4.38 Days
Continuous |
|
16-Jun-25 07:30 | 20-Jun-25 17:30 | ALTALINK | RB | 514L (396s Pincher Creek - 514BL tap), 514L (513s Lundbreck - 514BL tap) | south crew will be doing component replacement on 514L (Str 16-186)& (Str 452-453) Live Line | 4.42 Days
Daily |
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16-Jun-25 08:00 | 20-Jun-25 17:00 | ALTALINK | TE | 799s RTU/SCADA (799s Coleman) | supervisory outages required for addition and testing of alarms/controls associated with new T3 and associated protection upgrade | 4.38 Days
Daily |
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16-Jun-25 08:00 | 04-Jul-25 16:00 | ENMAX | Outage | 31.1C (SS-31) | capacitor bank switcher replacement, grounding improvements | 18.33 Days
Continuous |
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16-Jun-25 08:00 | 20-Jun-25 17:00 | ALTALINK | TE | 799s Protection & Control (799s Coleman) | circuit cutover and testing | 4.38 Days
Daily |
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16-Jun-25 08:00 | 01-Aug-25 17:00 | ATCO | TE | 808s Protection & Control (808s Procter & Gamble), 808s RTU/SCADA (808s Procter & Gamble) | SCADA upgrade at 808S. Protection and hardwired IO on-site will need to be cut-over to new SCADA system and tested | 46.38 Days
Continuous |
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16-Jun-25 08:00 | 20-Jun-25 16:00 | ENMAX | Outage | 27.2TR (SS-27) | transformer maintenance and testing | 4.33 Days
Continuous |
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16-Jun-25 09:00 | 25-Jun-25 17:00 | BCH | Outage | 5L77 (BCH Ashton Creek - BCH Revelstoke G.S.) | replace flashed and broken insulators
|
9.33 Days
Continuous |
AB-BC |
16-Jun-25 10:00 | 20-Jun-25 17:30 | ATCO | Outage | 959s 901T (959s Lanfine) | transformer class 1 major testing, tap changer class 1 testing and qualitrol ITM/ETM settings updates | 4.31 Days
Continuous |
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16-Jun-25 10:00 | 20-Jun-25 17:30 | ATCO | TE | 959s Protection & Control (959s Lanfine), 959s RTU/SCADA (959s Lanfine) | updates RTU | 4.31 Days
Continuous |
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16-Jun-25 11:30 | 20-Jun-25 16:30 | ALTALINK | Outage | 650s SVC (650s Hansman Lake), 650s T3 (650s Hansman Lake), 650s 252 (650s Hansman Lake), 650s 352 (650s Hansman Lake), 650s 489 (650s Hansman Lake) | maintenance on SVC and breaker testing | 4.21 Days
Continuous |
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16-Jun-25 12:00 | 20-Jun-25 16:00 | ATCO | Outage | 885s 902T (885s McMillan), 885s 501R (885s McMillan) | replace 1 single phase reactor in 501R, 902T major and tap changer refurbishment |
4.17 Days
Continuous |
|
16-Jun-25 12:00 | 09-Jul-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain) | block 50BF/702 relay as required to commission new connections associated with 21A/7L13 and 21B/7L13 relay replacements | 23.21 Days
Continuous |
|
16-Jun-25 12:00 | 09-Jul-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain) | block 50BF/703 relay as required to commission new connections associated with 21A/7L13 and 21B/7L13 relay replacements | 23.21 Days
Continuous |
|
16-Jun-25 12:00 | 09-Jul-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain) | block 21B/7L45 in order to perform 702PTY2 voltage injections needed for 21B/7L13 relay replacement | 23.21 Days
Continuous |
|
16-Jun-25 12:00 | 09-Jul-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain) | block 21B/7L228 in order to perform 702PTY2 voltage injections needed for 21B/7L13 relay replacement | 23.21 Days
Continuous |
|
17-Jun-25 08:00 | 20-Jun-25 18:00 | ATCO | TE | ATCO RTU/SCADA | 6500S RTU - cutover from ATCO Electric control center to URICA control center, update and test new RTAC configurations | 3.42 Days
Continuous |
|
17-Jun-25 09:00 | 21-Jun-25 09:00 | ALTALINK | Outage | 163s T1 (163s Amoco Empress) | unbolt/re-connect cabling from Altalink bus into plains substation for cable testing | 4 Days
Continuous |
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17-Jun-25 09:00 | 20-Jun-25 20:00 | SUNCOR | TE | 29EDD-34 29-652-10202 (29EDD-34), 29EDD-34 Protection & Control (29EDD-34) | test relay B-51G,P120, - 29PL6-38 - Block 7 Relay 450037252 |
3.46 Days
Continuous |
|
18-Jun-25 08:00 | 20-Jun-25 18:00 | ATCO | TE | ATCO RTU/SCADA | update and test new RTAC configurations | 2.42 Days
Continuous |
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18-Jun-25 08:00 | 20-Jun-25 17:00 | ALTALINK | Outage | 786L (799s Coleman - BCH Natal) | move fiber run to accommodate construction | 2.38 Days
Continuous |
AB-BC |
18-Jun-25 08:00 | 20-Jun-25 17:00 | ALTALINK | TE | AltaLink Telecom Equipment, 799s Coleman | move fiber run | 2.38 Days
Continuous |
|
18-Jun-25 08:30 | 20-Jun-25 17:00 | ALTALINK | TE | 698s Protection & Control (698s Jackfish) | standard relay maintenance. | 2.35 Days
Daily |
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18-Jun-25 14:00 | 26-Jun-25 13:00 | BCH | Outage | 5L72 (BCH Mica G.S. - BCH Nicola) | MCA 5CVT23 PM
|
7.96 Days
Continuous |
|
19-Jun-25 07:00 | 20-Jun-25 18:00 | ALTALINK, ENBRIDGE | Outage | 703L (213s Hughenden - 703BL tap), 213s 703 (213s Hughenden), 329s HRT-S2 (329s Hrt Express) | replace arms and insulators on structure 39. replace structure 77. repair woodpecker damage on structure 78. | 1.46 Days
Daily |
|
19-Jun-25 08:00 | 20-Jun-25 19:00 | ATCO | Outage | 845s 703 (845s Big Mountain) | protection upgrade 21A & 21B relays 7L13. CT testing, breaker testing |
1.46 Days
Continuous |
|
19-Jun-25 08:00 | 20-Jun-25 19:00 | ATCO | Outage | 808s 702T (808s Procter & Gamble), 808s 702 (808s Procter & Gamble) | 7L13 relay replacement. CT testing, breaker testing |
1.46 Days
Continuous |
|
19-Jun-25 08:00 | 24-Jun-25 16:00 | SUNCOR | Outage | 635EDD-1001 635PK-1003 (635EDD-1001), 635EDD-1001 635PS-1110 (635EDD-1001) | 635EDD-1001 144kV diameter 3 equipment maintenance | 5.33 Days
Continuous |
|
20-Jun-25 07:30 | 22-Jun-25 17:30 | ALTALINK | RB | 1201L (520s Bennett - BCH Cranbrook) | barehand training crew will be replacing insulation and jumpers at STRs 2, 101 & 103 | 2.42 Days
Daily |
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20-Jun-25 08:00 | 20-Jun-25 16:00 | ENMAX | Outage | 162B138-RB81 (SS-162) | hv breaker maintenance - 162B138-RB81, breaker dashpot checks | 8 Hours
Continuous |
|
20-Jun-25 08:00 | 20-Jun-25 16:00 | ENMAX | Outage | 13.60L (SS-13 - SS-27), 27.2TR (SS-27), 27B69-13.60 (SS-27), 13B69-13.60 (SS-13), 27MD69-27.2TR (SS-27), SW65 (SS-27) | make repairs to damaged 27MD69-27.2TR | 8 Hours
Continuous |
|
21-Jun-25 08:00 | 21-Jun-25 18:00 | ENMAX | Outage | 2.83L (SS-5 - 2.83L tap), 2.83L (SS-2 - 2.83L tap), 2.83L (SS-13 - 2.83L tap), 3.84L (SS-3 - SS-13), 13.1TR (SS-13), 13.3TR (SS-13), 13B138-2.83 (SS-13), 13B138-3.84 (SS-13), 5B138-2.83 (SS-5), 3B138-3.84 (SS-3), SW83 (SS-13), 13MD138-13.1TR (SS-13), 13MD138-13.3TR (SS-13), 2MD138-2.83 (SS-2) | oil sampling - 13.3-TC, MT, summer substation washing | 10 Hours
Continuous |
|
21-Jun-25 08:00 | 08-Jul-25 16:00 | Syncrude, ATCO | Outage | RL1 (848s Ruth Lake - D05), T2 (D05 Syncrude), D05 517 (D05), D05 516 (D05), D05 513 (D05), D05 78 (D05), D05 517B (D05), D05 516A (D05), D05 516B (D05), D05 513A (D05), D05 513B (D05), D05 509 (D05), D05 78A (D05), 848s RL-1D1 (848s Ruth Lake) | 6-year 260 kV and 72 kV preventive maintenance | 17.33 Days
Continuous |
|
22-Jun-25 08:00 | 22-Jun-25 12:00 | ENMAX | Outage | 21.4TR (SS-21), 21B69-21.4TR (SS-21) | HV breaker SF6 gas sample - 21B69-21.4TR | 4 Hours
Continuous |
|
22-Jun-25 09:00 | 24-Jun-25 14:00 | ENMAX | Outage | 31.2TR (SS-31) | grounding improvements ,install new surge arrestor insulator supports, and grounding | 2.21 Days
Continuous |
|
22-Jun-25 12:00 | 22-Jun-25 16:00 | ENMAX, ALTALINK | Outage | 28.80L (42s Sarcee - SS-28), 28B138-28.80 (SS-28), 42s 28 (42s Sarcee) | HV breaker SF6 gas sample - 28B138-28.80 | 4 Hours
Continuous |
|
22-Jun-25 12:00 | 22-Jun-25 16:00 | ENMAX, ALTALINK | IO | 28.80L (42s Sarcee - SS-28) | HV breaker SF6 gas sample - 28B138-28.80 | 4 Hours
Daily |
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23-Jun-25 07:00 | 27-Jun-25 17:00 | EPCOR | Outage | 72CH9 (987s Clover Bar - EP Hardisty), 987s CH722 (987s Clover Bar), H724 (EP Hardisty) | Cloverbar - CH9 zone doble and CH722 breaker maintenance and CDS3/HDS10 disconnect maintenance | 4.42 Days
Continuous |
|
23-Jun-25 07:00 | 26-Jun-25 17:00 | EPCOR | Outage | 72RV4 (EP 511s Victoria - Rossdale), EP 511s V726 (EP 511s Victoria), EP 511s V727 (EP 511s Victoria), RV726 (Rossdale) | Victoria: RV4 zone doble and disconnect maintenance | 3.42 Days
Continuous |
|
23-Jun-25 07:00 | 26-Jun-25 18:00 | ALTALINK, VISIONREQ | Outage | 354s PMU (354s Summerview), 354s 138DS4 (354s Summerview) | replace PMU device with new SEL PMU circuits | 3.46 Days
Continuous |
|
23-Jun-25 07:00 | 26-Jun-25 17:00 | ALTALINK, VISIONREQ | TE | 354s PMU (354s Summerview) | PMU outage for replacement | 3.42 Days
Continuous |
|
23-Jun-25 07:00 | 26-Jun-25 18:00 | ALTALINK, VISIONREQ | TE | 354s RTU/SCADA (354s Summerview) | setup of new PMU | 3.46 Days
Daily |
|
23-Jun-25 07:00 | 27-Jun-25 17:00 | EPCOR | Outage | RR729 (Rossdale) | Rossdale - RR729 breaker fail upgrade cutovers | 4.42 Days
Continuous |
|
23-Jun-25 07:00 | 27-Jun-25 17:30 | ALTALINK | TE | 678s RTU/SCADA (678s Okotoks) | download updated configuration, and complete points check, iInstall and commission new port server | 4.44 Days
Daily |
|
23-Jun-25 07:00 | 26-Jun-25 17:00 | ALTALINK | TE | 227s RTU/SCADA (227s Cutting Lake) | update the RTU configuration | 3.42 Days
Daily |
|
23-Jun-25 07:30 | 26-Jun-25 17:30 | ALTALINK | RB | 799L (235s Entwistle - 443s South Mayerthorpe), 799L (77s Sagitawah - 443s South Mayerthorpe) | proximity for 799L rebuild (str 731-830) | 3.42 Days
Daily |
|
23-Jun-25 07:30 | 26-Jun-25 17:30 | ALTALINK | RB | 514L (396s Pincher Creek - 514BL tap), 514L (513s Lundbreck - 514BL tap) | component replacement on 514L (str 16-186) and (str 452-453) - live line | 3.42 Days
Daily |
|
23-Jun-25 07:30 | 24-Jun-25 17:30 | ALTALINK | RB | 688AL (284s Nose Creek - 688L tap), 688L (199s East Airdrie - 688BL tap), 688BL (1055s Sollair - 688L tap), 688L (653s Summit - 688AL tap), 688L (688AL tap - 688BL tap) | barehand training at strs 18 and 19 - live line | 1.42 Days
Daily |
|
23-Jun-25 08:00 | 09-Jul-25 17:00 | ATCO | TE | 808s Protection & Control (808s Procter & Gamble) | relay replacement | 16.38 Days
Continuous |
|
23-Jun-25 08:00 | 09-Jul-25 17:00 | ATCO | TE | 845s Protection & Control (845s Big Mountain), 845s RTU/SCADA (845s Big Mountain) | relay replacement | 16.38 Days
Continuous |
|
23-Jun-25 08:00 | 27-Jun-25 17:00 | ALTALINK | TE | 799s RTU/SCADA (799s Coleman) | addition and testing of alarms/controls associated with new T3 and associated protection upgrade | 4.38 Days
Daily |
|
23-Jun-25 08:00 | 27-Jun-25 17:00 | ALTALINK | TE | 799s Protection & Control (799s Coleman) | circuit cutover and testing | 4.38 Days
Daily |
|
23-Jun-25 08:00 | 26-Jun-25 16:00 | ATCO | RB | 7L43 (739s Edith Lake - 809s Louise Creek) | walk up and climbing inspection | 3.33 Days
Continuous |
|
23-Jun-25 08:00 | 24-Jun-25 16:00 | ENMAX | Outage | 16.63L (SS-16 - SS-36), 16B69-16.63 (SS-16), 36B69-16.63/36.5TR (SS-36) | HV breaker maintenance - 16B69-16.63 | 1.33 Days
Continuous |
|
23-Jun-25 08:00 | 24-Jun-25 17:00 | ALTALINK | TE | 89s Protection & Control (89s Ellerslie) | remove DC from 89s909W controls to facilitate repair of 89s1140 cable | 1.38 Days
Daily |
|
23-Jun-25 08:00 | 26-Jun-25 17:30 | ALTALINK | TE | 678s Protection & Control (678s Okotoks) | SCADA upgrade project | 3.4 Days
Daily |
|
23-Jun-25 08:00 | 24-Jun-25 18:00 | ENMAX | Outage | 38.3TR (SS-38) | tap changer inspection - 38.3-TC, tap changer oil filtration maintenance, oil sampling MT, TC | 1.42 Days
Continuous |
|
23-Jun-25 08:00 | 26-Jun-25 16:00 | ATCO | RB | 7L39 (722s Crystal Lake - 7LA39 tap), 7L39 (811s Clairmont Lake - 7LA39 tap) | walk up and climbing inspection | 3.33 Days
Continuous |
|
23-Jun-25 08:00 | 26-Jun-25 16:00 | ATCO | RB | 7L08 (830s Carmon - 834s Wesley Creek) | walk up and climbing inspection | 3.33 Days
Continuous |
|
23-Jun-25 09:00 | 30-Jun-25 18:00 | SUNCOR | TE | 29EDD-34 RTU/SCADA (29EDD-34) | upgrade network switch firmware and reboot network switch | 7.38 Days
Continuous |
|
23-Jun-25 09:00 | 30-Jun-25 18:00 | SUNCOR | TE | 29EDD-1 RTU/SCADA (29EDD-1 Millennium) | upgrade network switch firmware and reboot network switch | 7.38 Days
Continuous |
|
23-Jun-25 09:30 | 27-Jun-25 19:00 | ATCO | Outage | 808s 702T (808s Procter & Gamble), 808s 702 (808s Procter & Gamble) | 7L13 relay replacement, CT testing, breaker testing |
4.4 Days
Continuous |
|
23-Jun-25 09:30 | 27-Jun-25 17:30 | ATCO | Outage | 757s 912T (757s Battle River), 757s 710 (757s Battle River), 757s 912 (757s Battle River), 755s 9L80D2 (755s Cordel) | transformer class1 major testing - breaker testing - 710 at 757s | 4.33 Days
Continuous |
|
23-Jun-25 10:00 | 24-Jun-25 15:00 | ATCO | Outage | 844s 701T (844s AEC Mill), 844s 701 (844s AEC Mill) | oil samples and work to within LOA | 29 Hours
Continuous |
|
23-Jun-25 10:00 | 27-Jun-25 17:30 | ATCO | Outage | 7L128 (963s Coyote Lake - 7LA128 tap), 9L29 (946s Oakland - 963s Coyote Lake), 963s 901T (963s Coyote Lake), 963s 901 (963s Coyote Lake), 963s 701 (963s Coyote Lake), 963s 7L128D4 (963s Coyote Lake), 963s 9L29D1 (963s Coyote Lake), 946s 9L29D2 (946s Oakland) | transformer testing - 901T at 963s, qualitrol ITM/ETM settings updates | 4.31 Days
Continuous |
|
23-Jun-25 10:00 | 27-Jun-25 17:30 | ATCO | TE | 963s RTU/SCADA (963s Coyote Lake) | settings updates |
4.31 Days
Continuous |
|
23-Jun-25 11:00 | 26-Jun-25 16:00 | ATCO, ALTALINK | RB | 9L960 (13s Deerland - 825s Whitefish Lake) | climbing inspection on 9L960 and 9L961 | 3.21 Days
Continuous |
|
23-Jun-25 11:00 | 26-Jun-25 16:00 | ATCO, ALTALINK | RB | 9L961 (13s Deerland - 825s Whitefish Lake) | climbing inspection | 3.21 Days
Continuous |
|
23-Jun-25 11:00 | 23-Jun-25 17:00 | ALTALINK | TE | 385s RTU/SCADA (385s Spring Coulee) | UF settings removal from 112L & SCADA changes associated with removal | 6 Hours
Daily |
|
23-Jun-25 11:00 | 26-Jun-25 16:00 | ATCO, ALTALINK | RB | 9L960 (13s Deerland - 825s Whitefish Lake) | climbing inspection | 3.21 Days
Daily |
|
23-Jun-25 11:00 | 26-Jun-25 16:00 | ATCO, ALTALINK | RB | 9L961 (13s Deerland - 825s Whitefish Lake) | climbing inspection | 3.21 Days
Daily |
|
23-Jun-25 11:30 | 26-Jun-25 18:30 | ALTALINK | Outage | 1140L (89s Ellerslie - 289s Saunders Lake), 89s 952 (89s Ellerslie), 89s 1052 (89s Ellerslie) | breaker maintenance | 3.29 Days
Continuous |
|
23-Jun-25 11:30 | 26-Jun-25 18:30 | ALTALINK | Outage | 89s T1 (89s Ellerslie) | doble and maintenance | 3.29 Days
Continuous |
|
23-Jun-25 12:00 | 04-Jul-25 16:00 | ATCO | Outage | 826s 901T (826s Marguerite Lake), 826s 502R (826s Marguerite Lake) | transformer major maintenance | 11.17 Days
Continuous |
|
23-Jun-25 12:00 | 24-Jun-25 17:00 | ATCO | Outage | 848s 402R (848s Ruth Lake), 848s 403R (848s Ruth Lake), 848s 404R (848s Ruth Lake), 848s 402 (848s Ruth Lake) | PRC-005 - trip coil testing, breaker 402 at 848s | 29 Hours
Continuous |
|
23-Jun-25 13:30 | 23-Jun-25 17:00 | ALTALINK | TE | 385s Protection & Control (385s Spring Coulee) | settings changes | 3.5 Hours
Daily |
|
23-Jun-25 19:00 | 23-Jun-25 23:59 | BCH | Outage | 5L92 (BCH Cranbrook - BCH Selkirk), 5D44 (BCH Cranbrook) | investigate suspect faulty interrupter on 5D44 | 4.98 Hours
Continuous |
AB-BC |
24-Jun-25 07:00 | 25-Jun-25 15:00 | ALTALINK | TE | AltaLink Telecom Equipment, 121s RTU/SCADA (121s Brooks) | upgrade to our firewall at 121s | 1.33 Days
Daily |
|
24-Jun-25 07:00 | 24-Jun-25 17:00 | ALTALINK | TE | 477s RTU/SCADA (477s Amoco West Pembina) | board removal | 10 Hours
Daily |
|
24-Jun-25 08:00 | 25-Jun-25 16:00 | ENMAX | IO | Protection & Control (SS-37) | 37sub capacity upgrade | 1.33 Days
Continuous |
|
24-Jun-25 08:00 | 26-Jun-25 18:00 | ALTALINK | Outage | 891L (226s Garden City - 863L tap) | SAB-1 maintenance. | 2.42 Days
Continuous |
|
24-Jun-25 08:00 | 24-Jun-25 17:00 | ALTALINK | TE | AltaLink Telecom Equipment | investigate MPLS issue | 9 Hours
Daily |
|
24-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | Outage | 510s 2552 (510s Sunnybrook) | replace grading caps | 1.38 Days
Continuous |
|
24-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | TE | AltaLink Telecom Equipment | install new IRU600V4 to salvage existing IRU600 | 1.38 Days
Daily |
|
24-Jun-25 08:00 | 24-Jun-25 17:00 | ALTALINK | TE | 602s RTU/SCADA (602s Cold Creek) | 2025 MPLS firmware and raw socket upgrade | 9 Hours
Daily |
|
24-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | TE | 276s Protection & Control (276s Union Carbide Prentiss), AltaLink Telecom Equipment | perform an MPLS node addition upgrade | 1.38 Days
Daily |
|
24-Jun-25 08:00 | 25-Jun-25 16:00 | ENMAX | Outage | 37.3TR (SS-37) | forward energize 37.3TR for 24 hour soak test | 1.33 Days
Continuous |
|
24-Jun-25 08:00 | 26-Jun-25 18:00 | EHN, ALTALINK, ENBRIDGE | Outage | 226s Garden City, 891L (226s Garden City - 863L tap), 226s T1 (226s Garden City), 226s 52/T1 (226s Garden City) | station maintenance | 2.42 Days
Continuous |
|
24-Jun-25 08:30 | 25-Jun-25 16:00 | ATCO | Outage | ATC 793s 701T (ATC 793s West Peace River) | testing and maintenance. | 31.5 Hours
Continuous |
|
24-Jun-25 08:30 | 24-Jun-25 14:30 | ALTALINK | Outage | 127s C1 (127s Bruderheim) | 138 kV breaker maintenance | 6 Hours
Daily |
|
24-Jun-25 08:30 | 24-Jun-25 16:30 | ALTALINK | Outage | 356s 152 (356s Milo) | 356s152 PRC5, maintenance | 8 Hours
Daily |
|
24-Jun-25 08:30 | 24-Jun-25 12:00 | ATCO | RB | ATC 793s 144kV Bus (ATC 793s West Peace River) | cut in jumper J1 for 701TCS at 793s | 3.5 Hours
Continuous |
|
24-Jun-25 09:00 | 24-Jun-25 15:00 | ALTALINK | Outage | 863L (618s Riverbend - 891L tap), 618s 863X (618s Riverbend) | insulator replacement | 6 Hours
Daily |
|
24-Jun-25 09:00 | 24-Jun-25 17:00 | ATCO | TE | ATCO Telecom Equipment, 856s RTU/SCADA (856s Kinosis) | Kinosis_S-Telecom- low bes firewall install | 8 Hours
Continuous |
|
24-Jun-25 10:00 | 24-Jun-25 16:00 | ATCO | TE | 882s RTU/SCADA (882s Triangle), ATCO Telecom Equipment | replace the flash card or CSM card on the SAR slot, B SAR OS upgrade required and SAR reboot |
6 Hours
Continuous |
|
24-Jun-25 15:30 | 25-Jun-25 16:30 | ATCO | Outage | 844s 702T (844s AEC Mill), 844s 402 (844s AEC Mill) | oil samples and work to within LOA | 25 Hours
Continuous |
|
25-Jun-25 07:00 | 25-Jun-25 16:00 | ALTALINK | Outage | 413L (239s Castle River - 632s Russell), 632s 413 (632s Russell) | maintenance | 9 Hours
Daily |
|
25-Jun-25 07:00 | 25-Jun-25 17:00 | ALTALINK | TE | 227s Protection & Control (227s Cutting Lake) | update relay IP address in line with SCADA work | 10 Hours
Daily |
|
25-Jun-25 07:00 | 26-Jun-25 18:00 | ALTALINK | Outage | 973L (39s Bickerdike - 310p Sundance) | Repair broken strands on the 973L conductor between spans 24-25. | 1.46 Days
Continuous |
|
25-Jun-25 07:00 | 26-Jun-25 18:00 | ALTALINK | RB | 974L (39s Bickerdike - 310p Sundance) | urgent - proximity for 973L conductor repair | 1.46 Days
Daily |
|
25-Jun-25 07:30 | 25-Jun-25 17:30 | ALTALINK | RB | 1201L (520s Bennett - BCH Cranbrook) | replacing insulation at STR 2 | 10 Hours
Daily |
|
25-Jun-25 08:00 | 03-Jul-25 20:00 | SUNCOR | Outage | 29PL6-4 (29EDD-1 Millennium - 30EDD-1), 29EDD-1 29EDD1s1552 (29EDD-1 Millennium), 29EDD-1 29EDD1s1652 (29EDD-1 Millennium), 30EDD-1 622 (30EDD-1), 30EDD-1 623 (30EDD-1), 29EDD-1 29EDD1SPL6-4 (29EDD-1 Millennium), 30EDD-1 29PL6-4D1 (30EDD-1) | 29CVT-8 system PM, 29PL6-4 A87L GE L90 firmware, 29PL6-4 bird cover on line switch and 30EDD-01 29PS6-4D1 replacement | 8.5 Days
Continuous |
|
25-Jun-25 08:00 | 25-Jun-25 16:00 | ALTALINK | Outage | 864L (397s Benbow - 864AL tap), 864L (864AL tap - 864BL tap), 864L (551s Chevron Kaybob - 864BL tap), 864AL (346s Kaybob - 864L tap), 864BL (355s Chevron Knight - 864L tap), 346s T1 (346s Kaybob), 355s T1 (355s Chevron Knight), 355s T2 (355s Chevron Knight), 551s T1 (551s Chevron Kaybob), 355s 2 (355s Chevron Knight), 355s 4 (355s Chevron Knight), 551s 864N (551s Chevron Kaybob), 346s 864AN (346s Kaybob) | close open point 'B' on 346s 4.16kV bus | 8 Hours
Daily |
|
25-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | TE | 492s RTU/SCADA (492s Monarch), AltaLink Telecom Equipment | 492s Monarch supervisory outage | 9 Hours
Daily |
|
25-Jun-25 08:00 | 26-Jun-25 18:00 | ENMAX | Outage | 36.2TR (SS-36) | tap changer inspection, reversing switch check, oil sampling MT, TC and tap changer oil filtration maintenance | 1.42 Days
Continuous |
|
25-Jun-25 08:00 | 26-Jun-25 17:00 | ALTALINK | TE | 348s RTU/SCADA (348s Marlboro) | 2025 MPLS firmware and chassis upgrade at 348s | 1.38 Days
Daily |
|
25-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | TE | 15s RTU/SCADA (15s Fort Macleod) | remove UF settings from 14L & 41L | 9 Hours
Daily |
|
25-Jun-25 08:00 | 26-Jun-25 16:00 | ATCO | RB | 9L36 (825s Whitefish Lake - 826s Marguerite Lake) | repair damaged tower 46 | 1.33 Days
Continuous |
|
25-Jun-25 08:00 | 26-Jun-25 16:00 | ATCO | RB | 9L37 (825s Whitefish Lake - 826s Marguerite Lake) | repair damaged tower 46 | 1.33 Days
Continuous |
|
25-Jun-25 08:00 | 25-Jun-25 16:00 | ENMAX | Outage | 16.60L (SS-16 - SS-34), 16B69-16.60 (SS-16) | breaker maintenance and oil sampling | 8 Hours
Continuous |
|
25-Jun-25 08:00 | 25-Jun-25 17:00 | ALTALINK | TE | AltaLink Telecom Equipment | upgrade MPLS and LAN switch replacement | 9 Hours
Daily |
|
25-Jun-25 08:30 | 25-Jun-25 16:30 | ALTALINK | Outage | 356s 552 (356s Milo) | 356s552 PRC5 maintenance and counter replacement | 8 Hours
Daily |
|
25-Jun-25 08:30 | 25-Jun-25 16:30 | ALTALINK, TRANSALTA | Outage | 59s T1 (59s Peigan), 59s 138kV Bus (59s Peigan), 616L (59s Peigan - 616AL tap), 59s 616 (59s Peigan) | 59s T1 LA replacement 138kV | 8 Hours
Daily |
|
25-Jun-25 08:30 | 25-Jun-25 17:00 | ALTALINK | TE | 526s Protection & Control (526s Buffalo Creek) | investigate C1 string alarm and potentially replace protection | 8.5 Hours
Daily |
|
25-Jun-25 09:00 | 26-Jun-25 14:00 | ENMAX | Outage | 31.3TR (SS-31) | grounding improvements and install new surge arrestor insulator supports | 29 Hours
Continuous |
|
25-Jun-25 09:00 | 25-Jun-25 18:00 | SUNCOR | TE | 29EDD-34 RTU/SCADA (29EDD-34) | RTU power cycle and reboot | 9 Hours
Continuous |
|
25-Jun-25 10:00 | 25-Jun-25 17:00 | ATCO, CNRL | TE | 838s RTU/SCADA (838s Horizon Mining) | update SMP gateway | 7 Hours
Continuous |
|
25-Jun-25 10:00 | 25-Jun-25 12:00 | Lethbridge | TE | Lethbridge PCC | replacing RX 1500 network switch at PCC | 2 Hours
Continuous |
|
25-Jun-25 10:00 | 26-Jun-25 17:00 | ATCO | TE | 716s Protection & Control (716s Lloydminster), 716s RTU/SCADA (716s Lloydminster) | replace the AC cable for 701T cabinet with a larger size conductor | 31 Hours
Continuous |
|
25-Jun-25 14:00 | 25-Jun-25 18:00 | ATCO | RB | ATC 793s 144kV Bus (ATC 793s West Peace River) | reattach jumper for 701TCS and open jumper for 702TCS | 4 Hours
Continuous |
|
25-Jun-25 16:15 | 27-Jun-25 16:00 | ATCO | Outage | ATC 793s 702T (ATC 793s West Peace River) | complete CCT SW S&C test and maintenance 702TCS | 1.99 Days
Continuous |
|
26-Jun-25 07:30 | 26-Jun-25 12:30 | ALTALINK | Outage | 700L (422s Westwood - 746L tap), 700L (746s Sherwood Park - 746L tap), 746L (700L tap - 746AL tap), 422s 700 (422s Westwood), 746s 700N (746s Sherwood Park) | replacing insulator on structure 52 | 5 Hours
Daily |
|
26-Jun-25 08:00 | 01-Jul-25 16:00 | SUNCOR | Outage | 635EDD-1001 635PK-1002 (635EDD-1001), 635EDD-1001 635-752-642 (635EDD-1001), 635EDD-1001 635-752-643 (635EDD-1001) | 635EDD-1001 144 kV diameter 4 equipment maintenance | 5.33 Days
Continuous |
|
26-Jun-25 08:00 | 26-Jun-25 18:00 | ATCO | TE | 927s RTU/SCADA (927s Buchanan Creek), ATCO Telecom Equipment | Deadwood_T-Telecom- telecom DC systems outage, load transfer from Hayley charger to unity rectifier |
10 Hours
Continuous |
|
26-Jun-25 08:00 | 26-Jun-25 17:00 | ALTALINK | TE | 288s RTU/SCADA (288s Wolf Creek) | replace failing SMP16 RTU | 9 Hours
Daily |
|
26-Jun-25 08:00 | 26-Jun-25 17:00 | ALTALINK | TE | 534s RTU/SCADA (534s Eckville), 17s RTU/SCADA (17s Benalto), AltaLink PMU, 17s Protection & Control (17s Benalto) | upgrade MPLS | 9 Hours
Daily |
|
26-Jun-25 08:30 | 26-Jun-25 16:30 | ALTALINK | Outage | 356s 652 (356s Milo) | 356s652 PRC5 maintenance, gas top up | 8 Hours
Daily |
|
26-Jun-25 09:00 | 26-Jun-25 17:00 | ATCO | TE | 764s RTU/SCADA (764s Heisler) | Heisler_S-Telecom - low BES firewall install - outage to local network & SCADA communications | 8 Hours
Continuous |
|
26-Jun-25 12:31 | 26-Jun-25 17:30 | ALTALINK | Outage | 706L (410s Josephburg - 706AL tap) | replacing insulator on structure | 4.98 Hours
Daily |
|
27-Jun-25 08:00 | 27-Jun-25 12:00 | ENMAX | Outage | 26.81L (SS-26 - SS-32), 32B138-26.81 (SS-32), 26B138-26.81 (SS-26) | breaker SF6 gas sample for 32B138-26.81 | 4 Hours
Continuous |
|
27-Jun-25 12:00 | 27-Jun-25 18:00 | ALTALINK | Outage | 726L (37s North Calder - 71s Lamoureux), 37s 726E (37s North Calder) | replacing insulator on structure 197 | 6 Hours
Daily |
|
27-Jun-25 12:00 | 27-Jun-25 16:00 | ENMAX | Outage | 32.83L (SS-32 - SS-40), 32B138-32.83 (SS-32), 40B138-32.83 (SS-40) | breaker SF6 gas sample for 32B138-32.83 | 4 Hours
Continuous |
|
27-Jun-25 13:00 | 27-Jun-25 17:00 | ATCO | RB | ATC 793s 144kV Bus (ATC 793s West Peace River) | re-attach jumper for 702TCS at 793s |
4 Hours
Continuous |
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. © 2009 Alberta Electric System Operator. All rights reserved |