1. Path Operator Implementation Team Report to OC March 25, 2015

2. Background - POTF Roadmap Whitepaper was endorsed by OC on October 2014 List of concerns were submitted and compiled by WECC Staff Current effort has been split into two groups: – SDT to initiate the SAR for retiring TOP-007-WECC-1 – Path Operator Implementation Team to develop implementation plans as necessary on a path-by-path basis In addition, Peak Reliability will revise its SOL Methodology to align with the new concept

3. Update on Path Operator Implementation Team Conference call was held on February 20, 2015 Face to face meeting was held on March 13, 2015 The team effort focuses on the implementation challenges with the future framework of: – The new NERC SOL whitepaper – The new TOP/IROL Standard – The new MOD-001 Standard

4. POTF Basic Principle Path TTC: Not an SOL Respects SOLs Respects 3-phase Rating process, commercial issues, contracts, and allocations SOLs: Facility Ratings Voltage limits Stability limits These are observed pre- and post-Contingency Path SOL Alignment with MOD-001 Alignment with NERC SOL Whitepaper

5. List of Issues The team will create matrix of issues, categorize it and seek solutions. For example Planning HorizonOperating Horizon Outage Coordination and Day Ahead Real Time and Current Day Reliability Issue Path Rating Process Coordination between Path Rating, Seasonal Assessment Transfer Capability and Real time condition (Can TTC>Path Rating?) TTC Coordination Revising Peak RC SOL Methodology Creating Peak RC Outage Coordination Process Availability of Real Time tools for Situational Awareness Real Time flow > TTC ? Real Time flow > Path Rating? Commercial Issue Coordination of contract and ownership as well as TTC shares on existing Path Treatment of Scheduling Limit (is this WECC-TOP- 007 issue?) – Scheduling against loop flow ? Availability of Congestion Management Tool

6. Questions