Mira Loma
Riverside County, California · EIA plant ID 58698 · Operator: Costco Wholesale
Nameplate3MWSummer 3 MW
Generators3in service
Net generation2GWh12 mo to Dec 2025
Capacity factor8%solar units, summer MW
Heat rate—thermal plants only
First online2011
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) |
|---|---|---|---|
| 2013 | 4.1 | 15.8% | — |
| 2014 | 4.3 | 16.5% | — |
| 2015 | 3.5 | 13.2% | — |
| 2016 | 3.9 | 14.8% | — |
| 2017 | 3.9 | 14.7% | — |
| 2018 | 3.3 | 12.5% | — |
| 2019 | 2.7 | 10.1% | — |
| 2020 | 2.3 | 8.7% | — |
| 2021 | 2.8 | 10.6% | — |
| 2022 | 2.9 | 10.9% | — |
| 2023 | 2.7 | 10.2% | — |
| 2024 | 1.9 | 7.3% | — |
| 2025 | 2.2 | 8.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| D960 | Solar Photovoltaic | PV | 1 | 1 | Nov 2011 | Operating | — | coming soon |
| D9611 | Solar Photovoltaic | PV | 1.5 | 1.5 | Nov 2011 | Operating | — | coming soon |
| D9612 | Solar Photovoltaic | PV | 0.5 | 0.5 | Nov 2011 | Operating | — | coming soon |
Owner / operator
Operator: Costco Wholesale. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Costco Wholesale | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| CA Jurupa Valley 3251 De Forest Circle | 5 MW | 2.1 km |
| Chambers 4 - Eastvale LGB3 | 2 MW | 2.2 km |
| Mira Loma Peaker | 50 MW | 2.3 km |
| Mira Loma Energy Storage Facility | 20 MW | 2.3 km |
| SunE- E Philadelphia Ontario | 1 MW | 2.5 km |
| Dulles | 2 MW | 2.6 km |