Private company

Tucson Electric Power

Utility company in Tucson, Arizona

Tucson Electric Power (TEP) is an electric utility company serving southern Arizona in the United States. It is a subsidiary of Fortis, which announced its acquisition of parent company UNS Energy in 2013.2 It is part of Fortis Inc.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1892Founded1

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Tucson Electric Power (TEP) is an electric utility company serving southern Arizona in the United States. It is a subsidiary of Fortis, which announced its acquisition of parent company UNS Energy in 2013.2

Corporate structure

Tucson Electric Power is part of a group headed by Fortis Inc.. 18 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Fortis Inc. St. John'S, Newfoundland and Labrador, Canada
    • FortisAlberta 100% · Calgary, Alberta, Canada
    • ITC Holdings Corp. Novi, Michigan, United States
      • International Transmission Company Subsidiary · Michigan, United States
      • ITC Midwest LLC Subsidiary · Michigan, United States
      • Michigan Electric Transmission Company, LLC Subsidiary · Michigan, United States
      • Michigan Transco Holdings, LLC Subsidiary · Michigan, United States
    • Maritime Electric Charlottetown, Prince Edward Island, Canada
    • Newfoundland Power Inc. St. John's, Newfoundland and Labrador, Canada
    • Tucson Electric Power
    • ALGOMA POWER INC. Subsidiary · 100% · Fort Erie, Canada
    • FortisBC Holdings Inc. Subsidiary · 100% · Vancouver, Canada
    • FortisBC Inc. Subsidiary · 100% · Kelowna, British Columbia, Canada
    • CENTRAL HUDSON GAS & ELECTRIC CORPORATION Subsidiary · Poughkeepsie, New York, United States
    • FORTISBC ENERGY INC. Subsidiary · Surrey, British Columbia, Canada
    • TUCSON ELECTRIC POWER COMPANY Subsidiary · Tucson, Arizona, United States
    • UNS ELECTRIC, INC. Subsidiary · Tucson, Arizona, United States
    • UNS GAS, INC. Subsidiary · Tucson, Arizona, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1892Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2