Lone Valley Solar Park II LLC
San Bernardino County, California · EIA plant ID 59237 · Operator: Lone Valley Solar Park II LLC
Nameplate20MWSummer 20 MW
Generators1in service
Net generation53GWh12 mo to Dec 2025
Capacity factor30%solar 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), 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) |
|---|---|---|---|
| 2014 | 4.5 | 30.6% | — |
| 2015 | 53.2 | 30.3% | — |
| 2016 | 45 | 25.6% | — |
| 2017 | 50.6 | 28.9% | — |
| 2018 | 51.3 | 29.3% | — |
| 2019 | 46.1 | 26.3% | — |
| 2020 | 46 | 26.2% | — |
| 2021 | 48.6 | 27.7% | — |
| 2022 | 49.9 | 28.5% | — |
| 2023 | 49.8 | 28.4% | — |
| 2024 | 49.5 | 28.2% | — |
| 2025 | 53.1 | 30.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| CPII | Solar Photovoltaic | PV | 20 | 20 | Dec 2014 | Operating | — | coming soon |
Owner / operator
Operator: Lone Valley Solar Park II LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Lone Valley Solar Park II LLC | 100.0% | 20 MW |
Nearby plants
Within 80 km.
| Lone Valley Solar Park I LLC | 10 MW | 1.2 km |
| Sienna Solar Farm | — | 10.6 km |
| Sienna 2 Solar and Storage Project | — | 11.2 km |
| BBARWA | 2 MW | 16.2 km |
| Bear Valley Battery Plant | — | 17.6 km |
| Bear Valley Power Plant | 8 MW | 17.9 km |