January 2012 Capital Investment - National Grid

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Exhibit ___ (EIOP-19)Page 67 of 6842011 to 2012 Variance:The projected investment is shown in the table below show a modest increase year onyear to account for forecasted load growth and inflation.Specific ProjectsTable III-7Capacity PlanningProgram Variance ($millions)CIP FY12 FY13 FY14 FY15 FY16 FY17 Total2011 1.5 3.8 4.0 4.9 4.4 - 18.52012 - 4.4 4.5 5.2 5.7 6.1 25.9Load Relief2011 0.1 0.1 0.1 0.1 0.1 - 0.6Blankets 2012 - 0.1 0.1 0.1 0.1 0.1 0.6Total2011 1.6 3.9 4.1 5.0 4.5 - 19.12012 - 4.5 4.6 5.3 5.8 6.3 26.4The following specific projects are estimated to have spending in excess of $1 million inany fiscal year:• Project C28892, Buffalo 23kV Reconductor - Huntley. This project will replacethe 1H, 2H, 3H and 13H cables from Sawyer Station to Buffalo Station 24.These cables have exceeded summer normal ratings in the past and mayexceed emergency ratings for loss of one cable.• Project C28893, Buffalo 23kV Reconductor - Huntley 2. This project will replacecable 11H from Sawyer Station to Buffalo Station 52. This cable has exceededsummer normal ratings in the past and may exceed emergency ratings for theloss of one of the other three supply cables.• Project C28903, Buffalo 23kV Reconductor - Kensington 2. This project willreplace the 10K cable from Kensington Terminal Station to Buffalo Station #28,the 11K and 12K cables from Kensington Terminal Station to Buffalo Station #32and the 15K cable from Kensington Terminal Station to Buffalo Station #27.These circuits currently exceed emergency ratings for the loss of one cable.• Project C28894, Buffalo 23kV Reconductor - Kensington. This project willreplace the 21K, 22K, 23K and 33K cables from the Kensington Terminal Stationto Buffalo Station #53. These circuits currently exceed emergency ratings for theloss of one cable.III-9 968
Exhibit ___ (EIOP-19)Page 68 of 684Sub-Transmission AutomationIn a continuing effort to modernize the grid the Sub-Transmission Automation Strategyencompasses advanced distribution automation methodologies as well as SCADA forreclosers, fault locators, and switches; and the interface of distribution automationenabled line devices with substation feeder breakers. It also encompasses thecommunication of these devices with each other and to central operations centers anddatabase warehouses. The Company often refers to such devices and communicationstechnology as Advanced Grid Applications.Drivers:Following the success of pilot automation installations in 2008 and 2009, which verifiedthe capability of advanced distribution automation enabled equipment, the Companyrecognized the additional benefit of identifying projects where the installation ofmodernized switching schemes would provide increased reliability to the subtransmissionsystem.The number of Advanced Grid Application switches per circuit or installation will varydepending on the number of substations the circuit supplies, the desired segmentation ofthe line, and the configuration of the supply system. Many of the automation schemesare unique in nature and are developed considering an analysis of expected costs andbenefits.Customer Benefits:Distribution lines or substations not equipped with automated sectionalizing or throwover schemes may be subject to extended service interruptions as Operations personnelmust travel to the field locations to perform switching. This program provides anopportunity to continue to modernize the grid for the benefit of customers by reducingthe number of customer interruptions that result from a given contingency and the timerequired to reconfigure the system to restore service to as many customers as possiblewhile a faulted section of the system is being repaired.2011 to 2012 Variance:The projected investment is shown in the table below and the current forecast is basedon individual project estimates through FY15 and an expectation to continue thisprogram throughout the plan horizon. The prioritization of projects and the timing of theirimplementation will be based on the performance of the various individual circuits.Table III-8Sub-Transmission AutomationProgram Variance ($millions)CIP FY12 FY13 FY14 FY15 FY16 FY17 Total2011 1.4 1.8 2.6 2.9 3.0 - 11.72012 - 2.0 3.7 2.9 3.0 3.0 14.6The following specific project will exceed $1 million:• Project C35866, DA - NC Sub-Transmission Auto Lines 21/23/26. This projectprovides for sub-transmission automation in the form of sectionalizing viaIII-10 1069
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January 2012 Capital Investment - National Grid

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