El Dorado Refinery
Butler County, Kansas · EIA plant ID 58075 · Operator: Frontier El Dorado Refinery LLC
Nameplate39MWSummer 32 MW
Generators1in service
Net generation226GWh12 mo to Aug 2026
Capacity factor81%gas/coal/oil units, summer MW
Heat rate6,003Btu/kWhfossil units, electric fuel, HHV
First online1996Runs as baseload
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2012 | 34.7 | 12.3% | 11,605 |
| 2013 | 50.8 | 18.1% | 11,605 |
| 2014 | 45 | 16.1% | 11,605 |
| 2015 | 30.6 | 10.9% | 11,605 |
| 2016 | 37.5 | 13.4% | 6,003 |
| 2017 | 28.9 | 10.3% | 6,003 |
| 2018 | 67 | 23.9% | 5,883 |
| 2019 | 71.5 | 25.5% | 5,987 |
| 2020 | 164.3 | 58.5% | 6,003 |
| 2021 | 204.4 | 72.9% | 6,003 |
| 2022 | 132.9 | 47.4% | 6,003 |
| 2023 | 223.3 | 79.7% | 6,003 |
| 2024 | 223.6 | 79.5% | 6,003 |
| 2025 | 220.4 | 78.6% | 6,003 |
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 |
|---|---|---|---|---|---|---|---|---|
| L3804 | Natural Gas Fired Combustion Turbine | GT | 38.9 | 32 | Jan 1996 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: Frontier El Dorado Refinery LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Frontier El Dorado Refinery LLC | 100.0% | 39 MW |
Nearby plants
Within 80 km.
| Augusta Electric Plant No 2 | 21 MW | 14.2 km |
| Augusta Electric Plant No 1 | 11 MW | 15.2 km |
| Prairie Sky Solar Farm | 1 MW | 17.9 km |
| DeGraff Butler Electric | 1 MW | 21.4 km |
| Elk River Wind | 150 MW | 37.3 km |
| Harvey County | 1 MW | 40.2 km |