SonoraMohave Desert Renewable Transmission Project Proposal

1
Sonora-Mohave Desert Renewable Transmission
Project Proposal

• Potential project being defined for transmission
  for renewables in Western AZ and southern CA
• All elements and variations thereof identified
  through statements of interest received in a
  public process conducted by Western Area Power
  Administration last spring
• Feasibility study to start this year

2
Sonora-Mohave Desert Renewable Transmission
Project Proposal

• 4 potential elements
• 3 500-kV lines
• 2 potential double circuit 500/230-kV
• Phased developmentbased on element readiness
• Elements A-C previously identified in AZ
  utilities 10-year plans
• All elements would involve participation by
  multiple entities
• All elements would facilitate delivery of
  renewables to market

3
Sonora-Mohave elements

• APalo Verde-North Gila
• 500-kV, 100 miles
• BPalo Verde-Blythe
• 500-kV, 110 miles
• CSouth of Parker
• Potential double circuit, 230/500-kV, 330 miles

4
Sonora-Mohave elements

• CNorth of Parker
• Potential double circuit, 230/500-kV,
• 135 miles
• D-Imperial Valley
• Potential 500-kV network addition to the
  Southern California grid in Imperial County,
  California