Rio Rico Solar
Santa Cruz County, Arizona · EIA plant ID 59044 · Operator: UNS Electric, Inc
Nameplate6MWSummer 6 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor6%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 | 8.2 | 18.6% | — |
| 2015 | 10.3 | 19.6% | — |
| 2016 | 12 | 22.7% | — |
| 2017 | 11.3 | 21.4% | — |
| 2018 | 11.3 | 21.4% | — |
| 2019 | 11.3 | 21.4% | — |
| 2020 | 11.9 | 22.6% | — |
| 2021 | 9.8 | 18.7% | — |
| 2022 | 7.9 | 14.9% | — |
| 2023 | 4.3 | 8.2% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 3 | 5.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| RRSF | Solar Photovoltaic | PV | 6 | 6 | Mar 2014 | Operating | — | coming soon |
Owner / operator
Operator: UNS Electric, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| UNS Electric, Inc | 100.0% | 6 MW |
Nearby plants
Within 80 km.
| Valencia | 108 MW | 16.8 km |
| Wilmot Energy Center II | 200 MW | 49.1 km |
| Avalon Solar II | 16 MW | 55.9 km |
| Avalon Solar | 29 MW | 55.9 km |
| Babacomari Solar | 160 MW | 59 km |
| Wilmot Energy Center LLC | 160 MW | 61.4 km |