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TTC/ATC Process

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The goal of the TTC/ATC Process Work Group (TPWG) is twofold:

• First, WestConnect Transmission Owners will periodically disclose their methodology and the magnitude of TTC available on each of their posted paths. The Transmission Owners will also provide their analysis of the impacts, if any, of their transmission expansion plans on TTC availability.
  
• Second, the WestConnect Transmission Owners will standardize the calculation of ATC by having OATi establish a common ATC formula. Any deviations from the OATi standard will be identified on the Transmission Owners OASIS page on the wesTTrans website.

The benefits from disclosure of the magnitude of transfer capabilities and the standardization of the calculation of ATC include greater awareness of the reason for transfer levels by market participants and credibility of postings on wesTTrans. The dialogue in stakeholder forums can also help identify areas where additional transfer capacity is desired.

The general schedule for Work Group Activities consists of a stakeholder workshop held in the first quarter of each year to present the results of planning studies, and a second stakeholder workshop in the second half of each year in which the Transmission Owners identify planned additions to their systems.

TTC/ATC Chairman

• Tami Anderson
  MAPPCOR
  651-294-7086

Key Documents

• Determination of Transfer Capabilities and Committed Uses (.pdf)
• Procedure for Setting and Modifying the ATC Formula (.pdf)

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