1. Bulk Electric System Definition Task Force Update Joint Standing Committee Meeting October 21, 2010 Brian Theaker, BESDTF Chair

2. 2 Current BESDTF Force Focus (1) Develop administrative process for studies to determine which elements have a material impact on BES reliability Timelines and due process for submitting and reviewing Material Impact Assessments Evaluating proposed technical first-level dispute resolution process Appeals go to Compliance Hearing Body

3. 3 Current BESDTF Force Focus (2) Clarify points of BES/non-BES demarcation Comments: provide illustrated examples Issue: protection systems

4. 4 Current BESDTF Force Focus (3) Refining definitional exclusion for Local Distribution Networks (LDNs) LDNs are non-radial networks functioning only to distribute power to end-use load Issue: amount of generation in an LDN

5. 5 MIA Evaluation TSS MIA subgroup Early 10 – asked to evaluate two alternatives Widespread and significant voltage impact of 3-phase delayed clearing fault Short-circuit MVA Determined neither alternative was suitable Developing alternate proposal for MIA Recommendation by December 10

6. 6 Proposed schedule TSS recommendation on MIA – December 10 TSS approval of MIA – January 11 Post Proposal 6 (P6) and response to comments on P5 for 45-day comment period – January 11 First time MIA will be widely distributed Brief OC on presumed final proposal – March 11 Receive comments on P6 – March 11 Special OC BESDTF workshop (via web) – April 11 Start of 10-day e-mail ballot period Seek RPIC approval – June 11 Seek Board approval – June 11

7. Questions? For every complex problem there is an answer that is clear, simple, and wrong. H.L. Mencken Things should be made as simple as possible, but not any simpler. Albert Einstein Brian Theaker, BESDTF Chair