RE Gillespie 1 LLC
Maricopa County, Arizona · EIA plant ID 58501 · Operator: GSRP
Nameplate15MWSummer 15 MW
Generators1in service
Net generation39GWh12 mo to Dec 2025
Capacity factor29%solar units, summer MW
Heat rate—thermal plants only
First online2013
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 | 0.1 | 0.9% | — |
| 2014 | 44.7 | 34.0% | — |
| 2015 | 42.8 | 32.6% | — |
| 2016 | 44.1 | 33.5% | — |
| 2017 | 42.5 | 32.3% | — |
| 2018 | 41.6 | 31.6% | — |
| 2019 | 43.3 | 32.9% | — |
| 2020 | 40.3 | 30.6% | — |
| 2021 | 39.9 | 30.4% | — |
| 2022 | 36.7 | 27.9% | — |
| 2023 | 38.5 | 29.3% | — |
| 2024 | 36.8 | 27.9% | — |
| 2025 | 38.7 | 29.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GILL1 | Solar Photovoltaic | PV | 15 | 15 | Dec 2013 | Operating | — | coming soon |
Owner / operator
Operator: GSRP. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| RE Gillespie 1 LLC | 100.0% | 15 MW |
Nearby plants
Within 80 km.
| Paloma Solar Hybrid | 34 MW | 0.7 km |
| Cotton Center Solar Hybrid | 34 MW | 1 km |
| Gila River Power Station | 619 MW | 6.3 km |
| Gila River Power Block 3 | 619 MW | 6.3 km |
| Gila River Power Block 1 | 619 MW | 6.3 km |
| Gila River Power Block 2 | 619 MW | 6.3 km |