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Western Interconnection 2006 Congestion Study

2. Western Interconnection 2006 Congestion Study . EPAct 05 required DOE to perform a Congestion StudySSG-WI/WECC Study was underwayOpen Stakeholder processSSG-WI/WECC/WGA made proposal to DOE in September to perform required studyProposal accepted by DOEStudy results delivered to DOE in May

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Western Interconnection 2006 Congestion Study

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    1. 1 Western Interconnection 2006 Congestion Study Marv Landauer - BPA PNWER Annual Summit Edmonton July 18, 2006

    2. 2 Western Interconnection 2006 Congestion Study EPAct 05 required DOE to perform a Congestion Study SSG-WI/WECC Study was underway Open Stakeholder process SSG-WI/WECC/WGA made proposal to DOE in September to perform required study Proposal accepted by DOE Study results delivered to DOE in May DOE currently preparing draft report due to Congress in August

    3. 3 Western Interconnection 2006 Congestion Study 2008 Prod/Cost Modeling Study Existing system with reasonably certain additions 2015 Prod/Cost Modeling Study Resource Scenario from Utility IRPs and State RPSs Historical Path Usage Study 1999 thru 2005 Existing studies of congestion in the West Subregional Studies, etc

    4. 4 Western Interconnection 2006 Congestion Study Production/Cost Modeling Program calculates cost of generation production needed to meet total load requirements Full Western Transmission System Hourly loads for full year Wind and hydro generation is fixed Economically dispatches remaining generation to meet load within transmission constraints Does not recognize contracts

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    7. 7 Western Interconnection 2006 Congestion Study Conclusions WCATF identified 14 Congestion Areas in WI in 2006 Study. 6 other Congestion Areas were identified from sub-regional planning studies. The WCATF Congestion Areas were not ranked but alternative metrics and ranking methods were explored. DOE will rank Congestion Areas in its report to Congress in August Studies indicated that future Congestion Areas are highly dependent upon the location of future resources. Full Study results posted at www.wecc.biz

    8. 8 Integrated Planning Concept (BPA) Objective: Achieve least-cost planning in a functionally separated industry. Premise: Most commitments to long-term transmission service, particularly those that require expansion, are tied to utility load service. Concept: Establish a planning cycle that links individual utility resource planning with a region-wide open season transmission planning. Benefits: Improve our ability to develop transmission when needed. Regional adequacy assessment.

    9. 9 Integrated Planning Concept (BPA)

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