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ACC Biennial Transmission Assessment
Ed BeckSuperintendent, Planning
Tucson Electric Power
2008 - 2017
South
Vail
Greenlee
Westwing
TEP Service Area
North Loop
Irvington
500 kV345 kV
Voltage
TEP EHV System Additions TEP EHV System Additions Springerville
Winchester
Tortolita
SaguaroPinal West
2008
Pinal Central
2011
TEP EHV Studies• Pinal West interconnection as well as Pinal
Central (South) to Tortolita have been part of WECC base cases, SATS, SWAT, and WestConnect planning work
• Pinal Central to Tortolita environmental work underway and application for a CEC will be submitted last quarter of 2008 Study group for project is being formed
• All EHV options are being studied in comprehensive TEP 20 year study
500 kV345 kV
Voltage
North Loop
Vail
Irvington
Tortolita
Saguaro
138 kV System138 kV System• 138kV • 34 projects identified in plan
• 15 in ten year window• 15 projects = 120 miles of
line• Ten year projects in WECC
base cases, part of SATS, SWAT, WestConnect planning work as well as comprehensive TEP 20 year study that is in progress
UNS Electric (Citizens)• Plan to construct a 230kV line from
Kingman to Mercator mine in 2009• Plan to upgrade the existing 115kV line to
Nogales to 138kV and connect to TEP Vail substation by 2012