EX-21 4 d458354dex21.htm EX-21 EX-21

Exhibit 21

UNS Energy Corporation Subsidiaries

 

Subsidiary

   

State or Other Jurisdiction of

Incorporation or Organization

Tucson Electric Power Company (TEP)    Arizona

TEP Subsidiaries:

   

San Carlos Resources Inc.

    Arizona

Escavada Company

    Arizona
UniSource Energy Services, Inc. (UES)    Arizona

UES Subsidiaries:

   

UNS Electric, Inc.

    Arizona

UNS Gas, Inc.

    Arizona