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184.5 MW Natural Gas operating in Pinal, AZ — Arizona Public Service Company
184.5 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1972
Operating Since
Coordinates
32.5517, -111.3000
County
Pinal, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | — | — |
The Saguaro power plant is a natural gas-fired facility located in Pinal County, Arizona. It has a total capacity of 184.5 MW across three natural gas-fired combustion turbine generators. The plant began operating in 1972 and is owned by Pinnacle West Capital and operated by Arizona Public Service Company (APS). Saguaro operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Saguaro generated 135,229 MWh of electricity, resulting in a capacity factor of 8.3%. The plant ranks as the 23rd largest in Arizona out of 26 plants, and 767th nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
9.8K MWh
Latest Month
135.2K MWh
Annual Generation
8.3%
Capacity Factor
CO₂ Intensity
1089 lb/MWh
NOx
0.278 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $178.1M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about SaguaroArizona Public Service Company (AZPS)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.005 lb/MWh
CH₄
0.030 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
10.9%
Annual Net Gen
176 GWh
CO₂eq
1091 lb/MWh
Subregion
WECC Southwest