Antelope Big Sky Ranch
Los Angeles County, California · EIA plant ID 60279 · Operator: AES Distributed Energy
Nameplate20MWSummer 19 MW
Generators1in service
Net generation50GWh12 mo to Dec 2025
Capacity factor30%solar units, summer MW
Heat rate—thermal plants only
First online2016
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), solar 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) |
|---|---|---|---|
| 2016 | 17.1 | 23.2% | — |
| 2017 | 56.4 | 32.2% | — |
| 2018 | 57.3 | 34.4% | — |
| 2019 | 55.2 | 33.1% | — |
| 2020 | 52.1 | 31.2% | — |
| 2021 | 51 | 30.7% | — |
| 2022 | 52 | 31.3% | — |
| 2023 | 45.8 | 27.5% | — |
| 2024 | 54 | 32.3% | — |
| 2025 | 49.9 | 30.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ABSR | Solar Photovoltaic | PV | 20 | 19 | Aug 2016 | Operating | — | coming soon |
Owner / operator
Operator: AES Distributed Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| AES Distributed Energy | 100.0% | 20 MW |
Nearby plants
Within 80 km.
| Central Antelope Dry Ranch B LLC | 3 MW | 1.7 km |
| Lancaster Area Battery | 127 MW | 1.8 km |
| Horn | 2 MW | 2 km |
| Luna Storage | 100 MW | 2.1 km |
| Rodeo Solar C2 | 2 MW | 2.1 km |
| Rodeo Solar D2 | 2 MW | 2.1 km |