Great Valley Solar Portfolio Holdings, LLC
Fresno County, California · EIA plant ID 59940 · Operator: RWE Clean Energy
Nameplate203MWSummer 203 MW
Generators4in service
Net generation486GWh12 mo to Aug 2026
Capacity factor27%solar units, summer MW
Heat rate—thermal plants only
First online2017
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2017 | 10.3 | 13.9% | — |
| 2018 | 532.5 | 24.3% | — |
| 2019 | 544.7 | 30.7% | — |
| 2020 | 530.5 | 29.8% | — |
| 2021 | 533.6 | 30.1% | — |
| 2022 | 539.8 | 30.4% | — |
| 2023 | 561.4 | 31.6% | — |
| 2024 | 525.6 | 29.5% | — |
| 2025 | 503.2 | 28.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GVS2 | Solar Photovoltaic | PV | 60 | 60 | Dec 2017 | Operating | — | coming soon |
| GVS3 | Solar Photovoltaic | PV | 20 | 20 | Dec 2017 | Operating | — | coming soon |
| GVS4 | Solar Photovoltaic | PV | 20 | 20 | Dec 2017 | Operating | — | coming soon |
| TQ8 | Solar Photovoltaic | PV | 102.5 | 102.5 | Apr 2018 | Operating | — | coming soon |
Owner / operator
Operator: RWE Clean Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| RWE Clean Energy | 100.0% | 203 MW |
Nearby plants
Within 80 km.
| RE Tranquillity | 277 MW | 2.2 km |
| Scarlet Solar (CA) | 240 MW | 2.4 km |
| Luna Valley | 200 MW | 2.4 km |
| Scarlet II Hybrid | 350 MW | 2.5 km |
| EDPR Scarlet III | — | 4 km |
| Aspiration G | 9 MW | 4 km |