Alta Wind X
Kern County, California · EIA plant ID 58394 · Operator: alta wind x, llc
Nameplate138MWSummer 138 MW
Generators1in service
Net generation361GWh12 mo to Dec 2025
Capacity factor30%wind units, summer MW
Heat rate—thermal plants only
First online2014
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), wind units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2014 | 328.1 | 27.1% | — |
| 2015 | 309.4 | 25.6% | — |
| 2016 | 364.9 | 30.1% | — |
| 2017 | 340.4 | 28.2% | — |
| 2018 | 373.5 | 30.9% | — |
| 2019 | 366.6 | 30.3% | — |
| 2020 | 347.3 | 28.6% | — |
| 2021 | 395.4 | 32.7% | — |
| 2022 | 373 | 30.9% | — |
| 2023 | 336.5 | 27.8% | — |
| 2024 | 379 | 31.3% | — |
| 2025 | 361.1 | 29.9% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| AW10 | Onshore Wind Turbine | WT | 138 | 138 | Jan 2014 | Operating | — | ge 2.85-103 |
Owner / operator
Operator: alta wind x, llc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| NRG Renew | 100.0% | 138 MW |
Nearby plants
Within 80 km.
| Pinyon Pine I | 168 MW | 2.1 km |
| Rising Tree Wind Farm | 79 MW | 2.6 km |
| Difwind Farms Ltd VI | 27 MW | 2.8 km |
| Rising Tree Wind Farm II | 20 MW | 3.3 km |
| RE Camelot LLC | 45 MW | 3.9 km |
| RE Columbia Two, LLC | 15 MW | 3.9 km |