January 2012 Capital Investment - National Grid

Exhibit ___ (EIOP-19)Page 133 of 684Area DescriptionThe Utica Rome transmission study area includes the 115kV and above transmissionsystem with the northern boundaries at Boonville and Lighthouse Hill substations, west atOneida, and east at Inghams substation.Within the Utica Rome study area, there are four distribution study areas: Oneida, Rome,Utica and WLOF (Watertown, Lowville and Old Forge).The Oneida study area serves approximately 21,200 customers. The study area includesthe City of Oneida and the Village of Canastota. In the City of Oneida the Oneida Hospitalhas dual distribution supplies. Across the street from the hospital is the H.P.Hood DairyProducts Inc. facility which represents 4MVA of the load and also has dual distributionsupplies. The Village of Canastota which is located in western section of the Oneida areahas several large commercial and industrial customers including Canastota Industrial Park,Owl Wire and Cable, Inc and Die Molding Inc. A geographic constraint is the distance toother substations and the lack of feeder ties. There have been improvements to feeder tiesbetween the Oneida and Peterboro substations. Developing these ties was challenging dueto the New York State Thruway (Interstate 90), which is located between the twosubstations.The Rome area serves approximately 27,500 customers. There are thirty 4.8kV feeders andseventeen 13.2kV feeders in the study area. All distribution substations are supplied fromthe 115kV system. As a result there are no sub-transmission lines in the area.The Utica study area serves approximately 91,100 customers. The study area includes theCity of Utica. The distribution system consist of four 115-46kV, ten 115-13.2kV, four 46-13.2kV and seven 46- 5kV substations.The WLOF-MV (Watertown, Lowville and Old Forge - Mohawk Valley) study area servesapproximately 81,300 customers. There are thirty-six 4.8kV feeders and thirty nine 13.2kVfeeders. The distribution substations are primarily supplied from the 23kV and 46kV subtransmissionsystem with the exception of a few substations served by the 115kV system.The main sources to the 23kV sub-transmission system are Black River, Coffeen, IndianRiver, North Carthage and Taylorville substations. The main supply for the 46kV subtransmissionsystem is Boonville substation.V - 19134