• Photo of Parker Dam as seen from water level with storm clouds behind the dam.
  • Photo of Transmission structures desert terrain
  • Photo shows Davis Dam on the Colorado River as seen from downstream with partly cloudy blue sky.
  • Photo of Hoover Dam as seen from down stream with sunlight dappling the face of the dam.
  • Photo of Mead Substation transformers with partly cloudy sky.
WAPA’s Media Line: 720-962-7411
WAPA Region Map - DSW

About the Desert Southwest region

​The Desert Southwest Region carries out WAPA’s mission to customers in Arizona, southern California, and southern Nevada. We sell more than 10.3 billion kilowatt-hours of Federal hydroelectric power to cities and towns, rural electric cooperatives, Federal and state agencies and irrigation districts. This is enough energy to provide electric service for a year, to more than two million homes.

Provided services

WAPA’s Desert Southwest Region markets federal hydroelectric power to nearly 70 municipalities, cooperatives, federal and state agencies, and irrigation districts from powerplants operated at Hoover, Parker, and Davis dams.

DSW also operates and maintains more than 40 substations and 3,100 miles (4,950 kilometers) of transmission lines to keep the system running reliably. Our partnerships with our customers allow us to help them quickly restore service to local residents after storms or other major system disturbances.

Regional highlights

Upcoming meetings

  • January 11, 2024 iCal, at 10 am MST/9 am PST: Exploring Congestion Solutions at Mead Substation with Gridliance, LLC. For more information, please contact Paul Schwabe.
  • January 17, 2024 iCal, at 11am MST/10 am PST: Boulder Canyon Project Engineering and Operating Committee Meeting. For more information, please contact Connie Hack at the Bureau of Reclamation.

Last modified on December 7th, 2023