Alberta Electric System Operator

System Co-ordination Plan

2010-07-31 to 2010-08-06

Approved Outages

Date From Time Date To Time Owner Type Element Scheduled Activity Interconnection

From To

20-Jan-10 15:00 10-Sep-10 18:00 ATCO COND GTE 815S GOODFARE Change motor to hand operator Continuous

815S703A and commission

01-Feb-10 13:00 01-Sep-10 13:00 ATCO IO 834S WESLEY Install new switch in bus and add Continuous

CREEK 7L12 (no line temp bypass

oos)

01-Mar-10 8:00 31-Dec-10 16:00 ENMAX Outage 138-1.82L (ENMAX 1 - 138 kV cable replacement C

ENMAX 5) & -1.84L

(ENMA 1 - ENMAX 5)

09-Jul-10 9:00 19-Aug-10 17:00 AltaLink Outage 180L (255s Vulcan - line rebuild Continuous

928s East Stavely)

19-Jul-10 8:00 06-Aug-10 17:00 EPCOR Outage 987S Clover Bar CT changeout and Transformer 1 CONT.

Transformer #1 & retro fit

Trans #3

26-Jul-10 8:00 02-Aug-10 16:00 ATCO Outage 7L85 (803s Bullpound - 705 breaker maintenance Continuous

801s Anderson)

26-Jul-10 9:00 20-Aug-10 17:00 BCH Outage Natal T4 install oil containment Continuous AB-BC

27-Jul-10 10:30 03-Aug-10 17:00 ATCO Outage 810S DOME OIL RECLAMATION Continuous

CUTBANK 810S701T

28-Jul-10 7:30 05-Aug-10 18:30 ATCO RB 7L63 (780S LUBICON setting of “rider poles” close to Daily

TO 788S HOTCHKISS) 7L63 in preparation of stringing the

R/B new lines (7L106 and 7L131) from

834S Wesley to 905S Meikle

28-Jul-10 8:00 09-Aug-10 8:00 ATCO Outage 828s Sulphur Point foundation installation Continuous

828S700BS2

28-Jul-10 17:00 25-Aug-10 17:00 AltaLink Outage 396s Mobile install, SW project & building/switchgear Continuous

affects 170L (396s replacement. 396s10 to remain

Pincher Creek - 239s open to allow protection coordinatio

Castle River)

30-Jul-10 7:00 09-Aug-10 17:00 EPCOR Outage 930L (37s North Calder isolation for the Anthony Henday cont

- 805s Jasper) FWY construction project

30-Jul-10 8:00 01-Aug-10 17:00 AltaLink Outage 914L (86s Bigstone - install A & B protection Continuous AB-BC

89s Ellerslie)

03-Aug-10 7:00 03-Aug-10 17:00 EPCOR TE 9330R 3600 Mux Routine Maintenance 3600 Mux by D

AltaLink crews

03-Aug-10 7:00 03-Aug-10 17:00 AltaLink IO 9330R 3600 Mux - Info Routine Maintenance 3600 Mux

03-Aug-10 7:00 03-Aug-10 17:00 AltaLink TE 352s (104LN) Recloser Troubleshoot Autoreclosing for

- Relay 104LN

03-Aug-10 8:00 03-Aug-10 12:00 ENMAX Outage 69-13.60L affects duct work & backfill cable D

13.60L (ENMAX 13 -

ENMAX 27) and

13.4TR

03-Aug-10 8:00 12-Aug-10 18:00 AltaLink Outage 3L (42s Sarcee -272s replace 3/0 copper conductor with Continuous

Springbank) 266 partidge and change out

structures

03-Aug-10 8:00 13-Aug-10 16:30 AltaLink Outage 370s734X affects 734L breaker replacement Continuous

(370s North

Lethbridge - 241s

Uplands)

03-Aug-10 8:00 06-Aug-10 17:30 AltaLink RB 931L (28s -132s) R/B Line Maintenance Continuous

03-Aug-10 8:00 06-Aug-10 18:00 AltaLink RB 933L (28s - A801s ) Line Maintenance Continuous

03-Aug-10 8:00 05-Aug-10 17:00 AltaLink Outage 80L (217s North Red Replace structures due to river Daily

Deer - 198s erosion

03-Aug-10 8:00 03-Aug-10 17:00 AltaLink TE 28s Relay Relay Upgrade

03-Aug-10 8:00 03-Aug-10 17:00 AltaLink TE 17s Relay Relay Maintenance

03-Aug-10 8:00 03-Aug-10 17:00 AltaLink Outage 38s T3 GOI AMI installation

03-Aug-10 8:00 05-Aug-10 16:00 ATCO Outage 709s Vegreville 702T & breaker 602 maintenance Continuous

709702T & 6L79 (709s

Vegreville - 711s

Willingdon) open

ended at 709s

03-Aug-10 8:00 05-Aug-10 17:30 ATCO RB 9L59 NONE SWAY BRACE REPLACEMENT Continuous

03-Aug-10 9:00 05-Aug-10 17:00 AltaLink Outage 310P2652 (310p breaker maintenance & repair Continuous

Sundance) grading cap leaks

03-Aug-10 10:00 04-Aug-10 15:00 ATCO Outage 6L02 (757s Battle maintain 604 breaker Continuous

River - 6L02D2)

03-Aug-10 10:30 03-Aug-10 17:00 ATCO Outage 813s Little Smoky partial maintenance on 702

813S702

03-Aug-10 13:00 03-Aug-10 17:00 AltaLink Outage 28sR1, affects reactor doble testing

(28s West Brooks)

04-Aug-10 7:00 05-Aug-10 17:00 AltaLink Outage 910L (89s Ellerslie - Protection install B for FCSI Continuous AB-BC

63s Red Deer)

04-Aug-10 7:00 04-Aug-10 17:00 AltaLink IO 320p 3600 Mux - Info Routine Maintenance 3600 Mux

04-Aug-10 7:00 04-Aug-10 17:00 AltaLink IO 9320R 3600 Mux - Info Routine Maintenance 3600 Mux

04-Aug-10 8:00 04-Aug-10 17:00 AltaLink Outage 28s52 (28s West Breaker Maintenance

Brooks)

04-Aug-10 8:00 07-Aug-10 17:00 AltaLink Outage 172L (370s North Lower 172L & underbuild in Continuous

Lethbridge - 172L1236) preparation for 967/968L stringing

04-Aug-10 8:00 04-Aug-10 17:00 AltaLink TE 415s Relay Relay Testing

04-Aug-10 8:00 04-Aug-10 17:00 AltaLink Outage 38s T2 (38s East AMI installation

Edmonton)

04-Aug-10 8:00 04-Aug-10 17:00 ATCO Outage 813s703 (813s Little Partial Maintenance on 703

Smoky)

04-Aug-10 13:00 04-Aug-10 16:00 AltaLink Outage 56L (20s Ghost -245s Switch Maintenance

Seebe)

05-Aug-10 7:00 05-Aug-10 17:00 AltaLink IO 9320P 3600 Mux - Info Routine Maintenance 3600 Mux

05-Aug-10 7:00 05-Aug-10 17:00 AltaLink IO 9310P 3600 Mux - Info Routine Maintenance 3600 Mux

05-Aug-10 7:00 05-Aug-10 17:00 AltaLink IO 9310R 3600 Mux - Info Routine Maintenance 3600 Mux

05-Aug-10 8:00 05-Aug-10 17:00 AltaLink Outage 945s551W (945s breaker maintenance

Sunshine Village)

05-Aug-10 9:00 05-Aug-10 17:00 AltaLink Outage 368s35 (35s Burdett breaker maintenance

Cap Bank)

05-Aug-10 9:00 05-Aug-10 15:00 ATCO Outage 775S 604C, affects 604C Replace conductors

cap bank (775s

Sullivan Lake)

05-Aug-10 9:00 05-Aug-10 12:00 ATCO RB 7L07 (790 Poplar Hill - install marker cones on overhead

815s Goodfare) wire

05-Aug-10 10:00 05-Aug-10 16:00 ATCO Outage 813s Little Smoky partial maintenance on 701

813s701

05-Aug-10 10:00 05-Aug-10 16:00 ATCO Outage 7L67 (824S Fieldgate - replace support stack on pole 3

743S Sarah Lake)

Prepared on: July-28-2010 16:35 Approved Outages Page 3 of 3

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.