Demand Fundamentals
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Demand Technicals
Company Profile
UniSource Energy Corporation engages in the electric generation and energy delivery businesses. The company's TEP segment generates, transmits, and distributes electricity to approximately 403,000 retail electric customers, including residential, commercial, industrial, and public sector customers in southeastern Arizona. It also sells electricity to other utilities and power marketing entities. As of December 31, 2010, this segment owned or leased 2,245 MW of net generating capacity, as well as owned or participated in electric transmission and distribution system consisting of 512 circuit-miles of 500-kV lines- 1,087 circuit-miles of 345-kV lines- 379 circuit-miles of 138-kV lines- 478 circuit-miles of 46-kV lines- and 2,621 circuit-miles of lower voltage primary lines. TEP segment generates electricity from coal, gas, oil, and solar sources. The company's UNS Gas segment distributes gas to approximately 146,500 retail customers in Mohave, Yavapai, Coconino, and Navajo counties in northern Arizona, as well as Santa Cruz County in southeastern Arizona. As of December 31, 2010, this segment's transmission and distribution system consisted of approximately 30 miles of steel transmission mains, 4,211 miles of steel and plastic distribution piping, and 136,439 customer service lines. The company's UNS Electric segment transmits and distributes electricity to approximately 91,000 retail customers consisting of residential, commercial, and industrial customers in Mohave and Santa Cruz counties. As of December 31, 2010, UNS Electric's transmission and distribution system consisted of approximately 56 circuit-miles of 115-kV transmission lines, 271 circuit-miles of 69-kV transmission lines, and 3,599 circuit-miles of underground and overhead distribution lines. This segment also owns the 65 MW Valencia plant, as well as 39 substations having an installed capacity of 1,788,050 kilovolt amperes. The company was founded in 1902 and is based in Tucson, Arizona.
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