SIS ReportSIS Report

Jerry SmithJerry Smith

Albuquerque, NMAlbuquerque, NM

March 7, 2008March 7, 2008

GOALSGOALS

Identify areas for improving congestion Identify areas for improving congestion management and work other groups to management and work other groups to implementimplement

Identify, coordinate, and propose solutions to seams issues

Monitor the implementation of MRTU Monitor the implementation of MRTU and take actions as necessaryand take actions as necessary

CAISO MRTU StatusCAISO MRTU Status

Report Completed and presented to Report Completed and presented to boardboard

Currently awaiting implementationCurrently awaiting implementation In observation modeIn observation mode

Congestion ManagementCongestion Management

Is an ongoing SEAMS issueIs an ongoing SEAMS issueTeam is being formedTeam is being formed

Seams Operational Seams Operational Impact Evaluation GuideImpact Evaluation Guide

To provide a process to identify and potentially remedy issues that inhibit regional coordination.

PurposePurpose

To trigger an investigation the concerned party must provide objective evidence of actual increased curtailment impacts

Initiating an InvestigationInitiating an Investigation

A concerned party must A concerned party must provide objective evidence of provide objective evidence of actual increased curtailment actual increased curtailment impacts to trigger an impacts to trigger an investigationinvestigation

Adequate DocumentationAdequate Documentation

A 15% change in the monthly incidence A 15% change in the monthly incidence of mitigation or curtailment on a path or of mitigation or curtailment on a path or element element

More than 6 events per month change More than 6 events per month change in the incidence of mitigation or in the incidence of mitigation or curtailment curtailment

Other documentation of change to Other documentation of change to historical patterns or incidence of new historical patterns or incidence of new practices causing curtailmentpractices causing curtailment

ProcedureProcedure

An entity that experiences increased curtailment An entity that experiences increased curtailment impacts, should utilize the following process steps: impacts, should utilize the following process steps: notify all appropriate operating and reliability notify all appropriate operating and reliability personnel personnel determine if curtailments are the result of conditions determine if curtailments are the result of conditions on its system on its system If it believes that they are the result of a neighboring If it believes that they are the result of a neighboring system’s actions, the entity will so notify the adjacent system’s actions, the entity will so notify the adjacent system system If the two entities believe that further review of the If the two entities believe that further review of the matter is required either party may refer to the matter matter is required either party may refer to the matter to the WECC Seams Issues Subcommittee (SIS) to the WECC Seams Issues Subcommittee (SIS) The SIS will determine the need for further The SIS will determine the need for further investigation investigation

Procedure (cont.)Procedure (cont.)

If SIS determine the need to investigation the SIS If SIS determine the need to investigation the SIS Chair will convene an investigation teamChair will convene an investigation team

The investigation team will return findings that will The investigation team will return findings that will result in one of the following:result in one of the following: Remedy team formed to addressed issueRemedy team formed to addressed issue Referred to the appropriate stakeholder processReferred to the appropriate stakeholder process Team finds no seams impactTeam finds no seams impact

If the SIS declines to investigate, the concerned If the SIS declines to investigate, the concerned party may to appeal to the WECC Joint Guidance party may to appeal to the WECC Joint Guidance

Committee.Committee.