Porterville Solar
Tulare County, California · EIA plant ID 58309 · Operator: Altus Power America Management, LLC
Nameplate4MWSummer 4 MW
Generators3in service
Net generation6GWh12 mo to Dec 2025
Capacity factor19%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 | 7 | 22.8% | — |
| 2015 | 7.1 | 23.2% | — |
| 2016 | 7 | 22.7% | — |
| 2017 | 6.7 | 21.9% | — |
| 2018 | 6.7 | 21.9% | — |
| 2019 | 6.6 | 21.5% | — |
| 2020 | 6.6 | 21.4% | — |
| 2021 | 6.7 | 21.9% | — |
| 2022 | 6.2 | 20.3% | — |
| 2023 | 6 | 19.6% | — |
| 2024 | 5.7 | 18.6% | — |
| 2025 | 6 | 19.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | PV | 1 | 1 | Jan 2014 | Operating | — | coming soon |
| 2 | Solar Photovoltaic | PV | 1 | 1 | Jan 2014 | Operating | — | coming soon |
| 5 | Solar Photovoltaic | PV | 1.5 | 1.5 | Jan 2014 | Operating | — | coming soon |
Owner / operator
Operator: Altus Power America Management, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Altus Power America Management, LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Porterville 6 and 7 | 3 MW | 6.1 km |
| South County Detention Center Solar | 1 MW | 7.3 km |
| Solar Photovoltaic Project #42 | 5 MW | 8.9 km |
| Anode (Springville) BESS | — | 8.9 km |
| Tulare Success Power Project | 1 MW | 11.5 km |
| Farmersville | 5 MW | 12.1 km |