Where is El Dorado Refinery?

In Butler County, Kansas (KS). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is El Dorado Refinery?

39 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

Who owns El Dorado Refinery?

EIA-860M names Frontier El Dorado Refinery LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as El Dorado Refinery LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Frontier El Dorado Refinery LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "El Dorado Refinery LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is El Dorado Refinery still running?

EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.

El Dorado Refinery

El Dorado Refinery is a 39 MW natural gas power plant in Butler County, Kansas, operated by Frontier El Dorado Refinery LLC. EIA-860M lists 1 generating unit here, inside SPP. Its unit entered service in 1996.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 38.9 MW; 32 MW net summer
Generating units: 1
In service: 1996
EIA plant ID: 58075

Where it is

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County: Butler County, Kansas
Coordinates: 37.7928, -96.8772
Balancing authority: SWPP
Sector: Industrial CHP

Units, technology and status

Operator of record: Frontier El Dorado Refinery LLC
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Standby/Backup

Every plant Frontier El Dorado Refinery LLC reports to EIA →

El Dorado Refinery: FAQ

Where is El Dorado Refinery?: In Butler County, Kansas (KS). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is El Dorado Refinery?: 39 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns El Dorado Refinery?: EIA-860M names Frontier El Dorado Refinery LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as El Dorado Refinery LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Frontier El Dorado Refinery LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "El Dorado Refinery LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is El Dorado Refinery still running?: EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.