1. Shawn Davis Regional Policy and Operations Analyst Portland General Electric Proposed Mid-C Scheduling Changes August 20, 2014 Interchange Scheduling and Accounting Subcommittee, Portland, Or.

2. 2 Grant raised concerns with participants in early 2013 o Grant initiated a Mitigation Plan with WECC Grant engaged Mid-Columbia Balancing Authority Participants o Jointly at NWPP offices at various dates o February 5, 2014 Grant and Power System Consultants presented “MIDC Participants Interaction White Paper” o April 18, 2014 Grant presented Proposed “Changes to MID-C Scheduling Practices” Business Practice. History

3. 3 Creation of new Mid-Columbia Architecture o Balancing Authorities that own or have contractual rights to generation at the Mid-C need to create pseudo ties to properly account for generation interchange. o BPA exempted due to federal statute o Target date for implementation was July 9, 2014 Proposed changes to Mid- C scheduling practices Grant’s Proposed Changes

4. 4 New Mid-Columbia Architecture MIDC Participants Interaction White Paper, Pg. 6

5. 5 Mid-Columbia Scheduling Forum Created on April 18 th, 2014 –First meeting April 28 th Forum was open to Mid-Columbia BA participants –Objective: o Generate joint comments to Grant proposed business practice on April 18, 2014. o Investigate alternate proposals o Define and communicate Mid-Columbia scheduling needs

6. 6 Forum work to date: o Two work groups created o BA work group  Developed guiding principles document o Mid-Columbia PUD work group  Developing joint scheduling proposal PUD proposal due; September 8 Proposal comments submitted August 1 Mid-Columbia Scheduling Forum

7. Shawn P Davis Portland General Electric August 20, 2014 Questions?