BPA Transmission Outage & Interruption Information

Effective March 30, 2007, BPA Transmission Services (BPAT) has implemented its OASIS on OATI wesTTrans. Transmission availability is posted in OASIS.

BPA makes no representations or warranties of any kind, express or implied, about the accuracy of this information, or related graphics contained on this website, and disclaims any and all liability with respect thereto.

Decisions based on information on these pages are solely the visitor's responsibility. Transmission Services reserves the right to modify TTC, and ATC until 08:00 on the day of WECC Preschedule day. Changes to TTC and ATC after 08:00 of the WECC Preschedule day will be addressed in Real Time.

Direct questions or comments to TBL Path Capacity, BPA Transmission Services, 360-418-8496.

Related Information

Transmission System Events

Outage Plans with Capacity Estimates

Known Constraints

[Jump to COI, PDCI, WNI, ENI, MTNW, WOH, LaGrande, RATS, NJD, WOM, ELM, RP, PA, SOA, NOH, WOS]

Capacity Restrictions caused by forced outages on Real-Time are not posted below. Real-Time outages are communicated among affected Parties by means of WECC telenet messages and can be viewed in OASIS.


COI Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
01/04/10-03/12/10HE 0800 on 01/04/10 - HE 1500 on 03/12/1041503675Colgate-Rio Oso 230kV Line
02/08/10-02/28/10HE 0800 on 02/08/10 - HE 1600 on 02/28/1036502500PAC-Malin-Round Mountain 2 500kV Line
02/11/10HE 0800 - HE 160036502500PG&E - Malin-Round Mountain 2 500kV Line
 HE 0800 - HE 170040503675Tracy-Los Banos 500kV Line
 HE 0800 - HE 170034003675Tracy-Los Banos 500kV Line In Conjunction with Malin-Round Mountain #2 500kV Line and Colgate-Rio Oso 230kV Line
02/17/10HE 1100 - HE 140042753675Gates-Midway 500kV Line
02/23/10HE 0900 - HE 150042503675Round Mountain-Table Mountain 1 500kV Line Series Caps at Round Mountain
02/23/10-01/01/21HE 0100 on 02/23/10 - HE 2400 on 12/31/202450Studied Nomogram COI&PDCI S>N
02/23/10-09/30/11HE 0100 on 02/23/10 - HE 2300 on 09/30/114333Studied Nomogram COI&PDCI N>S
03/02/10HE 0900 - HE 170033002450Grizzly-Captain Jack 1 500kV Line including Fort Rock 500kV Series Cap Group 1
03/02/10-03/13/10HE 0900 on 03/02/10 - HE 1400 on 03/13/1038503675Tesla-Metcalf 500kV Line
03/06/10-03/08/10HE 0900 on 03/06/10 - HE 2400 on 03/07/1014002450California-Oregon Intertie Remedial Action Scheme (RAS) AC A & B Controllers
03/15/10HE 0700 - HE 180029002500CISO-Captain Jack-Olinda 500kV and Olinda-Tracy 500kV line including Olinda 500kV North and South Bus
03/17/10HE 0700 - HE 180029002500CISO-Captain Jack-Olinda 500kV and Olinda-Tracy 500kV including Olinda 500kV North and South Bus
03/18/10HE 0900 - HE 170043503675CISO-Vaca-Tesla 500kV Series Caps @ Vaca
03/22/10-03/31/10HE 0800 on 03/22/10 - HE 1800 on 03/31/1043253675CISO-Table Mountain-Vaca 500kV Series Caps at Table Mountain
04/05/10-04/17/10HE 0800 on 04/05/10 - HE 1600 on 04/17/1038503675Tesla-Metcalf 500kV Line
04/12/10-04/15/10HE 0900 on 04/12/10 - HE 1200 on 04/15/1042503675Malin: Round Mountain 1 500kV Series Caps at Malin
11/04/09-04/08/10HE 0100 on 11/04/09 - HE 2400 on 03/30/1048003675Winter Seasonal SOL Limits
 HE 0100 on 11/04/09 - HE 2400 on 04/07/1048003675 
11/23/07-01/01/21HE 0100 on 11/23/07 - HE 2400 on 12/31/2048003675Path Rating (RTC)
 HE 1300 on 11/23/07 - HE 2400 on 12/31/0948003675 



PDCI Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S) NOB		 MW Limit
(S-N) NOB		 Reason for Path Reduction
01/01/10-03/01/10HE 0100 on 01/01/10 - HE 2400 on 01/31/102990975LADWP-Northbound flow restriction (Effective since 00:01 17DEC08)
 HE 0100 on 01/01/10 - HE 2400 on 02/28/102990975 
01/04/10-03/12/10HE 0800 on 01/04/10 - HE 1500 on 03/12/1029902084Colgate-Rio Oso 230kV Line
01/21/10-02/13/10HE 0800 on 01/21/10 - HE 1400 on 02/13/1029902084Cottonwood-Vaca 230kV Line
02/08/10-02/28/10HE 0800 on 02/08/10 - HE 1600 on 02/28/1029902084PAC-Malin-Round Mountain 2 500kV Line
02/10/10-02/24/10HE 0700 on 02/10/10 - HE 1000 on 02/24/1029902084Logan Creek-Vaca 230kV Line
 HE 0700 on 02/10/10 - HE 1000 on 02/24/1029902084CISO-Cottonwood-Cortina 230kV Line
02/11/10HE 0800 - HE 160029902084PG&E - Malin-Round Mountain 2 500kV Line
 HE 0800 - HE 170029902084Tracy-Los Banos 500kV Line
02/17/10HE 1100 - HE 140029901904Gates-Midway 500kV Line
02/23/10HE 0900 - HE 150029902084Round Mountain-Table Mountain 1 500kV Line Series Caps at Round Mountain
02/23/10-01/01/21HE 0100 on 02/23/10 - HE 2400 on 12/31/201904Studied Nomogram COI&PDCI S>N
02/23/10-09/30/11HE 0100 on 02/23/10 - HE 2300 on 09/30/112712Studied Nomogram COI&PDCI N>S
03/01/10-03/05/10HE 0600 on 03/01/10 - HE 1900 on 03/05/1029902084Midway-Vincent 3 500kV Line
03/02/10HE 0900 - HE 170029901070Grizzly-Captain Jack 1 500kV Line including Fort Rock 500kV Series Cap Group 1
03/02/10-03/13/10HE 0900 on 03/02/10 - HE 1400 on 03/13/1029902084Tesla-Metcalf 500kV Line
03/06/10-03/08/10HE 0900 on 03/06/10 - HE 2400 on 03/07/1029901070California-Oregon Intertie Remedial Action Scheme (RAS) AC A & B Controllers
03/13/10HE 0600 - HE 190029902084Midway-Vincent 1 500kV Line
03/15/10HE 0700 - HE 180029902084CISO-Captain Jack-Olinda 500kV and Olinda-Tracy 500kV line including Olinda 500kV North and South Bus
03/17/10HE 0700 - HE 180029902084CISO-Captain Jack-Olinda 500kV and Olinda-Tracy 500kV including Olinda 500kV North and South Bus
03/18/10HE 0900 - HE 170029902084CISO-Vaca-Tesla 500kV Series Caps @ Vaca
03/22/10-03/31/10HE 0800 on 03/22/10 - HE 1800 on 03/31/1029902084CISO-Table Mountain-Vaca 500kV Series Caps at Table Mountain
04/01/09-06/01/10HE 0100 on 04/01/09 - HE 2400 on 05/31/1029901070Celilo Converters
 HE 0100 on 04/01/09 - HE 2400 on 12/30/0929901070 
 HE 2400 on 04/01/09 - HE 2400 on 12/02/0929901070 
04/05/10-04/17/10HE 0800 on 04/05/10 - HE 1600 on 04/17/1029902084Tesla-Metcalf 500kV Line
04/12/10-04/15/10HE 0900 on 04/12/10 - HE 1200 on 04/15/1029902084Malin: Round Mountain 1 500kV Series Caps at Malin
11/04/09-04/08/10HE 0100 on 11/04/09 - HE 2400 on 03/30/1029902084Winter Seasonal SOL Limits
 HE 0100 on 11/04/09 - HE 2400 on 04/07/1029902084 
11/23/07-01/01/21HE 0100 on 11/23/07 - HE 2400 on 12/31/2029902084Path Rating
 HE 0100 on 11/23/07 - HE 2400 on 12/31/202084ICLTS Load tripping capability beginning June 6 2004 and still in effect.
 HE 1400 on 11/23/07 - HE 2400 on 12/31/0929902084Path Rating
 HE 1800 on 11/23/07 - HE 2400 on 12/31/092084ICLTS Load tripping capability beginning June 6 2004 and still in effect.



WNI Constraints

Northern Intertie Nomograms (updated Monday, January 11, 2010, 07:41)

(last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
02/08/10-02/09/10HE 0100 on 02/08/10 - HE 2400 on 02/08/101950Preschedule forecast for 2/8/10 (Nomogram 600R1 Zone 2 or BCTC limit; whichever is lowest)
 HE 0100 on 02/08/10 on 02/08/101140 
 HE 0200 on 02/08/10 - HE 0400 on 02/08/101182 
 HE 0500 on 02/08/10 on 02/08/101056 
 HE 0600 on 02/08/10 on 02/08/10847 
 HE 0700 on 02/08/10 on 02/08/101329 
 HE 0800 on 02/08/10 on 02/08/101292 
 HE 0900 on 02/08/10 on 02/08/101291 
 HE 1000 on 02/08/10 on 02/08/101314 
 HE 1100 on 02/08/10 on 02/08/101323 
 HE 1200 on 02/08/10 on 02/08/101343 
 HE 1300 on 02/08/10 on 02/08/101505 
 HE 1400 on 02/08/10 on 02/08/101510 
 HE 1500 on 02/08/10 - HE 1600 on 02/08/101671 
 HE 1700 on 02/08/10 on 02/08/101932 
 HE 1800 on 02/08/10 on 02/08/101950 
 HE 1900 on 02/08/10 - HE 2000 on 02/08/101614 
 HE 2100 on 02/08/10 on 02/08/101323 
 HE 2200 on 02/08/10 on 02/08/101352 
 HE 2300 on 02/08/10 on 02/08/101361 
 HE 2400 on 02/08/10 on 02/08/101414 
02/09/10-02/10/10HE 0100 on 02/09/10 - HE 2400 on 02/09/101950Preschedule forecast for 2/9/10 (Nomogram 600R1 Zone 2 or BCTC Limit; whichever is lowest)
 HE 0100 on 02/09/10 on 02/09/101186 
 HE 0200 on 02/09/10 - HE 0400 on 02/09/101221 
 HE 0500 on 02/09/10 on 02/09/101152 
 HE 0600 on 02/09/10 on 02/09/10980 
 HE 0700 on 02/09/10 on 02/09/101562 
 HE 0800 on 02/09/10 on 02/09/101547 
 HE 0900 on 02/09/10 on 02/09/101558 
 HE 1000 on 02/09/10 on 02/09/101561 
 HE 1100 on 02/09/10 on 02/09/101575 
 HE 1200 on 02/09/10 on 02/09/101576 
 HE 1300 on 02/09/10 on 02/09/101722 
 HE 1400 on 02/09/10 on 02/09/101717 
 HE 1500 on 02/09/10 - HE 1600 on 02/09/101924 
 HE 1700 on 02/09/10 - HE 1800 on 02/09/101950 
 HE 1900 on 02/09/10 - HE 2000 on 02/09/101865 
 HE 2100 on 02/09/10 on 02/09/101577 
 HE 2200 on 02/09/10 on 02/09/101580 
 HE 2300 on 02/09/10 on 02/09/10960 
 HE 2400 on 02/09/10 on 02/09/101096 
02/10/10-02/11/10HE 0100 on 02/10/10 - HE 2400 on 02/10/101950Preschedule forecast for 2/10/10 (Nomogram 600R2 Zone 2 or BCTC limit; whichever is lowest.)
 HE 0100 on 02/10/10 on 02/10/101195 
 HE 0200 on 02/10/10 - HE 0400 on 02/10/101229 
 HE 0500 on 02/10/10 on 02/10/101161 
 HE 0600 on 02/10/10 on 02/10/10991 
 HE 0700 on 02/10/10 on 02/10/101411 
 HE 0800 on 02/10/10 on 02/10/101384 
 HE 0900 on 02/10/10 on 02/10/101386 
 HE 1000 on 02/10/10 on 02/10/101402 
 HE 1100 on 02/10/10 on 02/10/101411 
 HE 1200 on 02/10/10 on 02/10/101419 
 HE 1300 on 02/10/10 on 02/10/101476 
 HE 1400 on 02/10/10 on 02/10/101480 
 HE 1500 on 02/10/10 - HE 1600 on 02/10/101632 
 HE 1700 on 02/10/10 on 02/10/101808 
 HE 1800 on 02/10/10 on 02/10/101828 
 HE 1900 on 02/10/10 on 02/10/101572 
 HE 2000 on 02/10/10 on 02/10/101573 
 HE 2100 on 02/10/10 on 02/10/101405 
 HE 2200 on 02/10/10 on 02/10/101433 
 HE 2300 on 02/10/10 on 02/10/101468 
 HE 2400 on 02/10/10 on 02/10/101501 
02/11/10-02/12/10HE 0100 on 02/11/10 - HE 2400 on 02/11/101950Preschedule forecast for 2/11/10 (Nomogram 600R2 Zone 2 or BCTC limit; whichever is lowest.)
 HE 0100 on 02/11/10 on 02/11/10980 
 HE 0200 on 02/11/10 - HE 0400 on 02/11/101251 
 HE 0500 on 02/11/10 on 02/11/10980 
 HE 0600 on 02/11/10 on 02/11/101014 
 HE 0700 on 02/11/10 on 02/11/101420 
 HE 0800 on 02/11/10 on 02/11/101393 
 HE 0900 on 02/11/10 on 02/11/101395 
 HE 1000 on 02/11/10 on 02/11/101410 
 HE 1100 on 02/11/10 on 02/11/101419 
 HE 1200 on 02/11/10 on 02/11/101426 
 HE 1300 on 02/11/10 on 02/11/101529 
 HE 1400 on 02/11/10 on 02/11/101533 
 HE 1500 on 02/11/10 - HE 1600 on 02/11/101681 
 HE 1700 on 02/11/10 on 02/11/101852 
 HE 1800 on 02/11/10 on 02/11/101880 
 HE 1900 on 02/11/10 on 02/11/101633 
 HE 2000 on 02/11/10 on 02/11/101634 
 HE 2100 on 02/11/10 on 02/11/101420 
 HE 2200 on 02/11/10 on 02/11/101439 
 HE 2300 on 02/11/10 on 02/11/101471 
 HE 2400 on 02/11/10 on 02/11/101501 
02/12/10-02/13/10HE 0100 on 02/12/10 - HE 2400 on 02/12/101950Preschedule forecast for 2/12/10 (Nomogram 600R1 Zone 2 or BCTC limit; whichever is lowest)
 HE 0100 on 02/12/10 on 02/12/101182 
 HE 0200 on 02/12/10 - HE 0400 on 02/12/101213 
 HE 0500 on 02/12/10 on 02/12/101151 
 HE 0600 on 02/12/10 on 02/12/101027 
 HE 0700 on 02/12/10 on 02/12/101325 
 HE 0800 on 02/12/10 on 02/12/101281 
 HE 0900 on 02/12/10 on 02/12/101293 
 HE 1000 on 02/12/10 on 02/12/101303 
 HE 1100 on 02/12/10 on 02/12/101420 
 HE 1200 on 02/12/10 on 02/12/101434 
 HE 1300 on 02/12/10 on 02/12/101544 
 HE 1400 on 02/12/10 on 02/12/101547 
 HE 1500 on 02/12/10 - HE 1600 on 02/12/101709 
 HE 1700 on 02/12/10 on 02/12/101835 
 HE 1800 on 02/12/10 on 02/12/101860 
 HE 1900 on 02/12/10 on 02/12/101658 
 HE 2000 on 02/12/10 on 02/12/101657 
 HE 2100 on 02/12/10 on 02/12/101487 
 HE 2200 on 02/12/10 on 02/12/101497 
 HE 2300 on 02/12/10 on 02/12/10978 
 HE 2400 on 02/12/10 on 02/12/101101 
02/13/10-02/14/10HE 0100 on 02/13/10 - HE 2400 on 02/13/101950Preschedule forecast for 2/13/10 (Nomogram 600R1 Zone 2 or BCTC limit; whichever is lowest)
 HE 0100 on 02/13/10 on 02/13/101193 
 HE 0200 on 02/13/10 on 02/13/101224 
 HE 0300 on 02/13/10 - HE 0400 on 02/13/101255 
 HE 0500 on 02/13/10 on 02/13/101224 
 HE 0600 on 02/13/10 on 02/13/101193 
 HE 0700 on 02/13/10 on 02/13/101464 
 HE 0800 on 02/13/10 on 02/13/101437 
 HE 0900 on 02/13/10 on 02/13/101405 
 HE 1000 on 02/13/10 on 02/13/101397 
 HE 1100 on 02/13/10 on 02/13/101541 
 HE 1200 on 02/13/10 on 02/13/101544 
 HE 1300 on 02/13/10 on 02/13/101693 
 HE 1400 on 02/13/10 on 02/13/101687 
 HE 1500 on 02/13/10 - HE 1600 on 02/13/101826 
 HE 1700 on 02/13/10 on 02/13/101945 
 HE 1800 on 02/13/10 on 02/13/101950 
 HE 1900 on 02/13/10 on 02/13/101756 
 HE 2000 on 02/13/10 on 02/13/101751 
 HE 2100 on 02/13/10 on 02/13/101547 
 HE 2200 on 02/13/10 on 02/13/101552 
 HE 2300 on 02/13/10 on 02/13/101079 
 HE 2400 on 02/13/10 on 02/13/101141 
02/23/10-08/01/10HE 0100 on 02/23/10 - HE 2400 on 07/31/1015711452NI Studied Nomogram
03/22/10HE 0600 - HE 200024002000BCTC-Transformer ING T4 and main bus ING 5MB2 out of service
03/23/10-03/25/10HE 0600 on 03/23/10 - HE 2000 on 03/25/1021001900BCTC-Meridian-Ingledow 1 500kV Line (5L44) and bus ING 5B11 out of service
07/31/11-01/01/21HE 2400 on 07/31/11 - HE 2400 on 12/31/2015711409NI Studied Nomogram
08/01/10-07/31/11HE 0100 on 08/01/10 - HE 2300 on 07/31/1115711412NI Studied Nomogram
11/23/07-01/01/21HE 0100 on 11/23/07 - HE 2400 on 12/31/2028502000Path Rating
 HE 1800 on 11/23/07 - HE 2400 on 12/31/0928502000 



ENI Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
02/01/08-01/01/21HE 0100 on 02/01/08 - HE 2300 on 08/24/09400400Path Rating
 HE 0100 on 02/01/08 - HE 2400 on 12/31/20400400 
 HE 2400 on 02/01/08 - HE 2400 on 12/31/09400400 



MTNW Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(E-W)		 MW Limit
(W-E)		 Reason for Path Reduction
10/31/09-01/01/21HE 0100 on 10/31/09 - HE 2400 on 12/31/201020WOG Limits
 HE 2400 on 10/31/09 - HE 2400 on 12/31/091020 
11/04/09-03/31/10HE 0100 on 11/04/09 - HE 2400 on 03/30/102200Winter System Operating Limits
 HE 0100 on 11/04/09 - HE 2400 on 03/30/101350 
 HE 0100 on 11/04/09 - HE 2400 on 03/30/102000WOG Winter Limit
11/23/07-01/01/21HE 0100 on 11/23/07 - HE 2400 on 12/31/202000Path Rating
 HE 0100 on 11/23/07 - HE 2400 on 12/31/201350 
 HE 0800 on 11/23/07 - HE 2400 on 12/31/091350 
 HE 2000 on 11/23/07 - HE 0700 on 08/21/091350 
 HE 2000 on 11/23/07 - HE 2400 on 12/31/092000 



WOH Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(E-W)		 MW Limit
(W-E)		 Reason for Path Reduction
10/31/08-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/204250West of Hatwai Path Rating
 HE 2400 on 10/31/08 - HE 2400 on 12/31/094250 



ID-NW @ LaGrande Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(E-W)		 MW Limit
(W-E)		 Reason for Path Reduction
11/23/07-01/01/21HE 0100 on 11/23/07 - HE 2400 on 12/31/20413350Path Rating
 HE 1800 on 11/23/07 - HE 2400 on 12/31/09413350 



Malin-Hilltop Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
02/22/10-02/28/10HE 0700 on 02/22/10 - HE 1700 on 02/28/1000PAC-Malin-Canby section of Malin-Hilltop 1 230kV Line
11/04/09-04/08/10HE 0100 on 11/04/09 - HE 2400 on 03/30/10300300Winter Seasonal SOL Limits
 HE 0100 on 11/04/09 - HE 2400 on 04/07/10300300 
11/28/07-01/01/21HE 0100 on 11/28/07 - HE 2400 on 12/31/09300300Path Rating
 HE 0100 on 11/28/07 - HE 2400 on 12/31/20300300 



North of John Day Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
03/02/10HE 0900 - HE 17006258Grizzly-Captain Jack 1 500kV Line including Fort Rock 500kV Series Cap Group 1
03/06/10-03/08/10HE 0900 on 03/06/10 - HE 2400 on 03/07/105328California-Oregon Intertie Remedial Action Scheme (RAS) AC A & B Controllers
11/04/09-04/08/10HE 0100 on 04/01/10 - HE 2400 on 04/07/107700Winter Seasonal SOL Limits
 HE 0100 on 11/04/09 - HE 2400 on 03/30/107700 
11/23/07-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/207800NOJDAY Path Rating
 HE 0100 on 12/29/09 - HE 2400 on 12/31/097800 
 HE 1700 on 11/23/07 - HE 2400 on 12/28/097800 



West of McNary Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(E-W)		 MW Limit
(W-E)		 Reason for Path Reduction
11/23/07-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/202870Path Rating (RTC)
 HE 0100 on 12/29/09 - HE 2400 on 12/31/092870 
 HE 1900 on 11/23/07 - HE 2400 on 12/28/092870 



Echo Lake - Monroe Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
11/23/07-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/201500Path Rating
 HE 0100 on 12/29/09 - HE 2400 on 12/31/091500 
 HE 1800 on 11/23/07 - HE 2400 on 12/28/091500 



Raver - Paul Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
03/01/10-03/07/10HE 0700 on 03/01/10 - HE 1500 on 03/07/101330South Tacoma-Covington section of Chehalis-Covington 1 230kV Line
11/23/07-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/201625Path Rating
 HE 0100 on 12/29/09 - HE 2400 on 12/31/091625 
 HE 1800 on 11/23/07 - HE 2400 on 12/28/091625 



Paul - Allston Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
03/01/10-03/02/10HE 0700 - HE 2000 Daily2260Chehalis-Covington 1 230kV Line(Daily)
 HE 2100 on 03/01/10 - HE 0600 on 03/02/102170South-Tacoma-Covington section of Chehalis-Covington 1 230kV Line
03/02/10-03/07/10HE 2100 on 03/02/10 - HE 1500 on 03/07/102170South Tacoma-Covington section of Chehalis-Covington 1 230kV Line
05/27/08-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/202250Path Rating
 HE 0100 on 12/29/09 - HE 2400 on 12/31/092250 
 HE 2400 on 05/27/08 - HE 2400 on 12/28/092250 



South of Allston Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
01/01/10-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/202910Studied Limit(Winter Allocation BPAT: 1836 PGE: 728 PAC: 346)
01/01/10-06/01/10HE 0100 on 01/01/10 - HE 2300 on 01/11/103100All lines in service(Winter Allocation BPAT: 1956 PGE: 775 PAC: 369)
 HE 2400 on 01/11/10 - HE 2400 on 05/31/103100 
02/10/10HE 0800 - HE 17002990Troutdale; 500/230kV Bank 8 (Forces out Ostrander-Troutdale 500kV Line)(Winter Allocation BPAT: 1886 PGE: 748 PAC: 356)
03/03/10-03/04/10HE 0800 on 03/03/10 - HE 1500 on 03/04/102990Ostrander-Troutdale 1 500kV Line including Ostrander 500kV East Bus(Winter Allocation BPAT: 1886 PGE: 748 PAC: 356)
06/01/10-11/01/10HE 0100 on 06/01/10 - HE 2400 on 10/31/103100All lines in service (Summer Allocation BPAT: 2186 PGE: 705 PAC: 209)
11/01/10-03/31/11HE 0100 on 11/01/10 - HE 2300 on 03/31/113100All lines in service(Winter Allocation BPAT: 1956 PGE: 775 PAC: 369)



North of Hanford Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(N-S)		 MW Limit
(S-N)		 Reason for Path Reduction
11/23/07-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/204410Year Round OTC for All Facilities in Service
 HE 0100 on 01/01/10 - HE 2400 on 12/31/204100NOHAN limit
 HE 0100 on 12/29/09 - HE 2400 on 12/31/094410Year Round OTC for All Facilities in Service
 HE 0100 on 12/29/09 - HE 2400 on 12/31/094100NOHAN limit
 HE 1800 on 11/23/07 - HE 2400 on 12/28/094410Year Round OTC for All Facilities in Service
 HE 1800 on 11/23/07 - HE 2400 on 12/28/094100NOHAN limit



West of Slatt Constraints (last modified Tuesday, February 09, 2010, 10:03) Daily/Hourly Limits
Date(s) Duration MW Limit
(E-W)		 MW Limit
(W-E)		 Reason for Path Reduction
05/31/08-01/01/21HE 0100 on 01/01/10 - HE 2400 on 12/31/204100Path Rating
 HE 0100 on 12/29/09 - HE 2400 on 12/31/094100 
 HE 2400 on 05/31/08 - HE 2400 on 12/28/094100 


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