Query
West Phoenix
Type
Entity Briefing
Entity
West Phoenix
ISO/RTO
spp
Generated
2026-10-17T06:43:22.473Z

Briefing on West Phoenix

Entity Briefing
Generated Oct 17, 2026·Dataset freshness not reported
1.2 GW
Capacity
Operating
Current status
1972
Operating since
10
Generators
40.4%
Capacity factor
4277 GWh
Annual generation
Briefing/plantOperating

West Phoenix is a 1.2 GW Natural Gas Fired Combined Cycle asset in Arizona, currently Operating.

West Phoenix is reported in Arizona since 1972 under Pinnacle West Capital. Available operating and financial measures include 40.4% capacity factor and 4277 GWh annual generation; $965/kW reported CapEx.

Location
Maricopa, Arizona
Technology
Natural Gas Fired Combined Cycle, Natural Gas Fired Combustion Turbine
Owner / parent
Pinnacle West Capital
Operator
Arizona Public Service Co
Grid
Arizona Public Service Company
Plant ID
117

What stands out

1

West Phoenix is a 1.2 GW Natural Gas Fired Combined Cycle asset in Arizona with status Operating.

2

Latest annual operating measures report 40.4% capacity factor and 4277 GWh annual generation.

3

Available financial measures include $965/kW CapEx.

4

Latest linked story: “EPA proposes rules that could require utilities to clean up ‘legacy’ coal ash ponds, landfills” (Utility Dive, 2023-05-18).

Market and operating context

Balancing authority
Arizona Public Service Company
NERC region
WECC
State rank
#6 of 35
National rank
#117 of 2,025

Why it matters

For this asset, operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.