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MPRP CMP-09-TCA-01 Overview

NEPOOL Reliability Committee MPRP TCA Application Status CMP-09-TCA-01 May 19 th , 2009 Dave Conroy, Central Maine Power Company. MPRP CMP-09-TCA-01 Overview. CMP-09-TCA-01 Filed January 15, 2009 Total Project Estimated Costs: $1.55 B PTF: $1,510,365,000 Non-PTF: $39,635,000

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MPRP CMP-09-TCA-01 Overview

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  1. NEPOOL Reliability Committee MPRP TCA Application StatusCMP-09-TCA-01May 19th, 2009 Dave Conroy, Central Maine Power Company

  2. MPRPCMP-09-TCA-01 Overview • CMP-09-TCA-01 Filed January 15, 2009 • Total Project Estimated Costs: $1.55 B • PTF: $1,510,365,000 • Non-PTF: $39,635,000 • Selection of Transmission Alternatives • N5: provides for more robust system performance and predicted load growth • S1: best performance/lowest cost • Underground Identified (≈ 6200’ of 115 kV in Lewiston) • Replaces existing underground 34.5 kV transmission facilities in-kind in urban area • No Localized Costs in PTF

  3. MPRP Overview Continued • Needs Assessment Published June 2007 • Included in ISO RSP 2007 • Transmission Alternatives Assessment Published May 2008 • 5 Northern Alternatives Studied • 3 Southern Alternatives Studied • NERC Mandatory Reliability Criteria • Loss Analysis • Transfer Capability • PPA Report Published June 2008 • Included in ISO RSP 2008 • Maine Public Utilities Commission Certificate of Public Convenience & Necessity filed July 2008 • PPA Addendum Analyses for scope changes, Published Jan 2009 • Longevity of Upgrades • Special Protection Systems • Sensitivity to Wind Power • Sensitivity to Greenline project • Year of Need Analysis

  4. MPRPCMP-09-TCA-01 Next Steps • Awaiting ISO recommendation on construction of Section 254, Orrington-Coopers Mills (345 kV or 115 kV)[Cost in TCA = $134M, page 19 of Attachment N] • Seeking Reliability Committee recommendation vote at this meeting, except for Section 254, leaving that vote for a later date [TCA PTF Cost of $1,510M less Section 254 = $1,376M]

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