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Data due for 12HSP1-OP

Date and Time: Friday Feb 11, 2011 5:00
Type: NW Area Coordinator

Case Description

I.   Case Due Dates:
To Area Coordinator:     February 11, 2011
To Staff:     March 18, 2011

II.   Purpose:   Operating Case - To represent anticipated operating conditions with heavy flows from Northwest to California.

III.   Items to be Prepared:
From Case:                   11HSP1-OP Operating Case
Stability Data:                Master Dynamics File (1)
Significant Changes:   From Existing System

IV.   Loads: 100% of spring peak everywhere

V.    Time: Srping conditions, (1600 to 1800 hours)



Generation Hydro Thermal Renewable
Canada Median -- --
Northwest High Low --
Idaho/Montana High Median --
Colorado/Wyoming Median Median --
Northern California Hydro Median N/A N/A
Northern California High Low --
Southern California -- -- --
Arizona/New Mexico Median Median --






Interchange** Condition Target* % Rating
Canada to Northwest Moderate -1000 50%
Northwest to California      
   (COI/RATS) Maximum 4800 100%
   (PDCi) Maximum 3100 100%
Path 15 S-N -- -- --
Wyoming/Idaho to Northwest Low 400 17%
Montana to Northwest Moderate 1500 68%
Utah/Colorado to Southwest Heavy 1145 72%
Southwest to Calif. (EOR/WOR) Low 3600/4500 38%/43%
Intermountain to Adelanto DC Heavy 1850 94%
Midway to Vincent Heavy 2800 93%
Path 45 (San Diego to CFE) -- -- --




*Actual flows within ± 10% of target are acceptable, but not to exceed the actual rating of the path.
**Targets may be altered as anticipated operting conditions become more clearly known. Renewables should be based onindividual entities' Renewable Portfolio Standard.

(Note) Where no target flows are specified actual scheduled transfers should be based on each areas load and generation (deficiency/surplus) balance and economical generation dispatch. The objective of the case should be kept in mind and schedules should be coordinated between areas prior to data submittal.
(1) Only Corrections to the MDF or new data for the MDF need be submitted.


Member: Tacoma Power      Project: ColumbiaGrid     
Tacoma Power

"As a charter member of ColumbiaGrid, Tacoma Power has observed the benefits for its customers of regional transmission planning. Engaging in the ColumbiaGrid collaborative transmission planning process has fostered diverse and innovative solutions. This open process for identifying and resolving transmission challenges has delivered cost-effective reliability to our entire region."
~~ William A. Gaines, Director of Utilities