Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/117
EIA plant 117
Phoenix · Maricopa · AZ
West Phoenix
Operated by Arizona Public Service Co
Published location
Where is West Phoenix?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
33.441700, -112.158300
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the AZ plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
1180,525
2108,757
382,537
470,241
5212,527
6353,299
7485,176
8480,192
9375,559
10357,302
11319,516
12283,636
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 180,525 |
| 2 | 108,757 |
| 3 | 82,537 |
| 4 | 70,241 |
| 5 | 212,527 |
| 6 | 353,299 |
| 7 | 485,176 |
| 8 | 480,192 |
| 9 | 375,559 |
| 10 | 357,302 |
| 11 | 319,516 |
| 12 | 283,636 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 180,525 MWh |
| 2 | 108,757 MWh |
| 3 | 82,537 MWh |
| 4 | 70,241 MWh |
| 5 | 212,527 MWh |
| 6 | 353,299 MWh |
| 7 | 485,176 MWh |
| 8 | 480,192 MWh |
| 9 | 375,559 MWh |
| 10 | 357,302 MWh |
| 11 | 319,516 MWh |
| 12 | 283,636 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| C5-3 | Natural Gas Fired Combined Cycle | NG | 200.6 | OP |
| C5-1 | Natural Gas Fired Combined Cycle | NG | 184.5 | OP |
| C5-2 | Natural Gas Fired Combined Cycle | NG | 184.5 | OP |
| 1B | Natural Gas Fired Combined Cycle | NG | 132 | OP |
| 2B | Natural Gas Fired Combined Cycle | NG | 132 | OP |
| 3B | Natural Gas Fired Combined Cycle | NG | 132 | OP |
| C4-1 | Natural Gas Fired Combined Cycle | NG | 91 | OP |
| GT1 | Natural Gas Fired Combustion Turbine | NG | 53.1 | OP |
| GT2 | Natural Gas Fired Combustion Turbine | NG | 53.1 | OP |
| C4-2 | Natural Gas Fired Combined Cycle | NG | 44.6 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
117
Sector
Electric Utility
Water source
Wells
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right West Phoenix power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at West Phoenix
Variation in the published months
Across 12 numeric monthly generation entries, 7 has the highest recorded value (485,176 MWh) and 4 the lowest (70,241 MWh). Their difference is 414,935 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 10 numeric rows displayed in this table, MW ranges from 44.6 (C4-2) to 200.6 (C5-3). The difference is 156 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| 1B | Natural Gas Fired Combined Cycle | 132.0 | 85.0 | 85.0 | 10.0 |
| 2B | Natural Gas Fired Combined Cycle | 132.0 | 85.0 | 85.0 | 10.0 |
| 3B | Natural Gas Fired Combined Cycle | 132.0 | 85.0 | 85.0 | 50.0 |
| C4-1 | Natural Gas Fired Combined Cycle | 91.0 | 68.0 | 72.0 | 40.0 |
| C4-2 | Natural Gas Fired Combined Cycle | 44.6 | 34.0 | 36.0 | 0.0 |
| C5-1 | Natural Gas Fired Combined Cycle | 184.5 | 163.0 | 175.0 | 85.0 |
| C5-2 | Natural Gas Fired Combined Cycle | 184.5 | 163.0 | 175.0 | 85.0 |
| C5-3 | Natural Gas Fired Combined Cycle | 200.6 | 146.0 | 157.0 | 0.0 |
| GT1 | Natural Gas Fired Combustion Turbine | 53.1 | 50.0 | 57.0 | 4.0 |
| GT2 | Natural Gas Fired Combustion Turbine | 53.1 | 50.0 | 57.0 | 4.0 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.