Alta Wind VIII
Kern County, California · EIA plant ID 57835 · Operator: Nextera Energy Resources
Nameplate150MWSummer 150 MW
Generators1in service
Net generation219GWh12 mo to Dec 2025
Capacity factor17%wind units, summer MW
Heat rate—thermal plants only
First online2012
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) |
|---|---|---|---|
| 2012 | 224.1 | 17.0% | — |
| 2013 | 285.4 | 21.7% | — |
| 2014 | 282.7 | 21.5% | — |
| 2015 | 231.5 | 17.6% | — |
| 2016 | 294.8 | 22.4% | — |
| 2017 | 251.4 | 19.1% | — |
| 2018 | 270.1 | 20.5% | — |
| 2019 | 237.1 | 18.1% | — |
| 2020 | 214.2 | 16.3% | — |
| 2021 | 188.6 | 14.3% | — |
| 2022 | 195.1 | 14.8% | — |
| 2023 | 186.4 | 14.2% | — |
| 2024 | 222 | 16.9% | — |
| 2025 | 219.2 | 16.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| AW08 | Onshore Wind Turbine | WT | 150 | 150 | Jan 2012 | Operating | — | vestas V90-3.0 |
Owner / operator
Operator: Nextera Energy Resources. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Brookfield Renewable Energy Group | 100.0% | 150 MW |
Nearby plants
Within 80 km.
| Pinyon Pine II | 132 MW | 1 km |
| Alta Wind Energy Center V | 168 MW | 2.1 km |
| Alta Wind Energy Center IV | 102 MW | 2.1 km |
| Brookfield Tehachapi 1 | 102 MW | 2.1 km |
| Pinyon Pine I | 168 MW | 2.8 km |
| TPC Windfarms LLC | 29 MW | 3.3 km |