Saguaro — Plant Summary
- EIA Plant ID
- 118
- Capacity
- 184.5 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine
- Status
- Operating
- Location
- Pinal, AZ
- Operating Since
- 1972
- Generators
- 3
- Operator
- Arizona Public Service Co
- Parent Company
- Pinnacle West Capital
- Annual Generation
- 135,229.01 MWh
- Capacity Factor
- 8.3%
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
Saguaro
OperatingNatural Gas
Ranked #23 of 33 Natural Gas plants in AZ#769 of 2009 nationally
184.5 MW Natural Gas operating in Pinal, AZ — Arizona Public Service Company
EIAWD
184.5 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1972
Operating Since
Location
Coordinates
32.5517, -111.3000
County
Pinal, AZ
Nearby Plants
- Red RockBESS84.9 MW · 1.0 km
- SerranoBESS383.8 MW · 5.5 km
- Davis Battery StorageBESS11.8 MW · 17.3 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | — | — |
Ownership Chain
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
9.8K MWh
Latest Month
135.2K MWh
Annual Generation
8.3%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Regulatory·permitting
APS seeks license extension for Palo Verde Nuclear Plant
Arizona Public Service (APS) plans to renew operating licenses for all three units at Palo Verde Generating Station, extending operations to the mid-2060s, ensuring continued energy supply.
APS (operator)
Power Engineering·1 weeks ago
General
DOE nixes $1.8B loan to Arizona Public Service for transmission, renewables and storage
Additional de-obligations are in process but cannot be publicly disclosed until finalized,” said Olivia Tinari, deputy press secretary for...
Utility Dive·4 weeks ago
Industry·technology
Private Dancers – Mexico’s Planned Gas-Fired Plants, LNG Export Capacity Driving Pipeline Projects
Mexico's still-rising demand for U.S.-sourced natural gas — and new pipelines to deliver it — has been driven by the buildout of new power...
Mexico (other)U.S. (other)
RBN Energy·2 months ago
General
Counting flowers to read the saguaro’s future
Tanisha Tucker Lohse, of the Tohono Oʼodham Nation, picks a ripe saguaro cactus fruit during a harvest day in Saguaro National Park near...
High Country News·7 months ago
Last updated 2026-03-25
View all 10 articles