1. Common Case Transmission Assumptions
Jeff Miller
SCG Chair
November 2011

2. Common Case Transmission Assumptions (CCTA)
Being prepared for TEPPC to use as their base case transmission assumptions
Formally called the Foundational Transmission Project List
Projects that have a high probability of being in-service and should be modeled in TEPPC’s base cases.
Not a transmission plan.
Being on the list and included in the WECC analysis does not mean that the projects are adopted by WECC to be part of a “WECC Plan.”

3. CCTA

4. Improvements for this year
Refined criteria and improved documentation
Addressing comments received from the SPSC and others
Used the WECC Project Information Portal for project information
Request for additional and updated information was sent to project sponsor

5. Process

6. CCTA Selection Process

7. Project Status Indicators
Financial commitment for construction
Needs to be more than a financial commitment to develop the project plan and obtain permits
Project implementation status
Primarily progress in permitting

9. Changes From Last Year Additions Removals In Service
Colstrip Upgrade (western portion)
Removals
Harry Allen-Northwest-Amargosa Valley
Archer Interconnection
AESO Projects - pending AESO confirmation
In Service
Hughes-Wyodak South
Northwest to BC Uprate
Path 36 TOT3 Upgrade

10. Comments due November 14