PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/145
EIA plant 145
Apache Junction · Maricopa · AZ
Horse Mesa
Operated by Salt River Project
Published location
Where is Horse Mesa?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
33.590700, -111.344000
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Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 291 MWh |
| 2 | 501 MWh |
| 3 | -2,626 MWh |
| 4 | 5,816 MWh |
| 5 | 11,772 MWh |
| 6 | 16,694 MWh |
| 7 | 17,404 MWh |
| 8 | 16,793 MWh |
| 9 | 15,067 MWh |
| 10 | 11,464 MWh |
| 11 | 4,975 MWh |
| 12 | 204 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| HM4 | Hydroelectric Pumped Storage | WAT | 99.8 | OP |
| HM3 | Conventional Hydroelectric | WAT | 11.7 | OP |
| HM1 | Conventional Hydroelectric | WAT | 9.9 | OP |
| HM2 | Conventional Hydroelectric | WAT | 9.9 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
145
Sector
Electric Utility
Water source
Salt River
Data edition
2024-final