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Data due for 12LW1-OP

Date and Time: Friday Dec 31, 2010 5:00
Type: NW Area Coordinator

Case Description

I.   Case Due Dates:
To Area Coordinator:     December 31, 2010
To Staff:     February 4, 2010

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

III.   Items to be Prepared:
From Case:                   11LW1-Op Operating Case
Stability Data:                Master Dynamics File (1)
Significant Changes:   From Existing System

IV.   Loads: 60-65% of winter (1-in-2) year peak in the Northwest, 60-80% of winter peak elsewhere

V.    Time: Early morning(0200 to 0500 hours), winter conditions



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






Interchange** Condition Target* % Rating
Canada to Northwest Low -500 25%
Northwest to California  --  --  --
(COI/RATS) Moderate -2500 68%
(PDCi) Moderate -2500 65%
Path 15 S-N Heavy 3450 64%
Wyoming/Idaho to Northwest Heavy 2000 83%
Montana to Northwest Heavy 2100 95%
Utah/Colorado to Southwest Low -170 --
Southwest to Calif. (EOR/WOR) Moderate 5100/6900 54%/65%
Intermountain to Adelanto DC Heavy 1850 96%
Midway to Vincent -- -- --
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: Avista Corporation      Project: ColumbiaGrid     
Avista Corporation

"In ColumbiaGrid, we now have the ability to resolve the three fundamental transmission questions: What transmission facilities should be built? Who should build them? Who should pay for them? With ColumbiaGrid's independent staff and process to resolve disputes, we can answer these questions effectively and in a timely fashion to facilitate our region's new resource development needs."
~~ Jeff Schlect, Manager, Transmission Services, Avista