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2006 FTR Release Assumptions

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Summary:

2006 Firm Transmission Rights Release Quantity Assumptions

Extract:

The information below is intended to provide additional details about the release assumptions made on Branch Groups where the ISO was required to make an adjustment in the calculation of the Firm Transmission Rights (FTR) release amounts. The standard methodology that the ISO uses for calculating FTR release amounts is as follows: - Determine the Available Transmission Capability (ATC) for all Branch Groups, by direction, for each hour over the past year. - Take the 8760 hours of ATC and rank them from highest value to lowest value. - Determine the ATC at the 99.5% availability level (special consideration is given for planned maintenance hours) - The value at 99.5% is the number of FTRs for Sale, if this number is zero then no FTR are released on that branch group. - TTC/OTC – ETC = ATC (NFU & FTRs)

Document Locations:

• Firm Transmission Rights (FTR) 2006 Auction (FTR Term 01-Apr-2006 through 31-Mar-2007)