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NSTAR 345 KV TRANSMISSION RELIABILITY PROJECT- PHASE II TCA Application #NSTAR-04-TCA-01-Rev 3

NSTAR 345 KV TRANSMISSION RELIABILITY PROJECT- PHASE II TCA Application #NSTAR-04-TCA-01-Rev 3. NEPOOL Reliability Committee Meeting June 17, 2008. PROJECT COST SUMMARY ($ in 1,000). * Rev 1 Added $17,217,000 for New Boston Upgrades. PROJECT REVISED COST SUMMARY.

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NSTAR 345 KV TRANSMISSION RELIABILITY PROJECT- PHASE II TCA Application #NSTAR-04-TCA-01-Rev 3

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  1. NSTAR 345 KV TRANSMISSION RELIABILITY PROJECT- PHASE IITCA Application #NSTAR-04-TCA-01-Rev 3 NEPOOL Reliability Committee Meeting June 17, 2008

  2. PROJECT COST SUMMARY ($ in 1,000) * Rev 1 Added $17,217,000 for New Boston Upgrades

  3. PROJECT REVISED COST SUMMARY • Phase I Cost Approved by ISO-NE in TCA, Rev 2 at $247,217,000. • $8,885,900 Local • $238,331,100 Pool-Supported • Phase I Approved Cost Included $17,217,000 for Upgrades to NSTAR Facilities Needed to Accommodate Operation of New Boston Unit #1 with Phase II – Upgrades No Longer Needed • Revised Phase II Project Cost is $86.8 Million, $44.7 Million of which Was Previously Approved in TCA, Revs 1 & 2 • Thus, TCA Rev 3 Increase is $24,883,000. • Phase II Increase of $42,100,000 • Less New Boston Upgrades No Longer Needed of $17,217,000

  4. PHASE II COST INCREASE SUMMARY Original Revised EstimateEstimateVariance Transmission Line Construction Civil Work $ 545 K $ 2,300K $ 1,755K HPFF Cable $17,770K $28,528K $10,758K Cable Pulling $ 1,570K $ 2,897K $ 1,327K Cable Termination & Splicing $ 4,506K $ 6,790K $ 2,284K Dielectric Fluid $ 649K $ 1,590K $ 941K Misc (other materials) $ 340K $ 3,620K $ 3,280K Station Construction Civil Work $ 2,484K $ 2,800K $ 316K Materials $ 8,429K $16,400K $ 7,971K Installation $ 6,380K $ 8,930K $ 2,550K Project Management $ 232K $ 2,170K $ 1,938K Quality Assurance $ 1,795K $ 6,650K $ 4,855K AFUDC & Indirects$ 4,125K$ 4,125K $44,700K $ 86,800K $42,100K

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