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Preliminary 2025 facility recordOperating

El Dorado, AR · EIA plant 55380

Union Power Station

Union Power Station is a oil & gas power facility in El Dorado, AR, with 2,428 MW of operating capacity.

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Operating capacity2,428 MW12 operating generators
Proposed capacity0 MW0 proposed generators
UtilityEntergy Arkansas LLCEIA-reported operator
Balancing authorityMISOMidcontinent Independent Transmission System Operator, Inc..

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Oil & gas2,428 MW
ProposedNo proposed capacity reported
Reported technologiesNatural Gas Fired Combined Cycle

Nearby in AR

Related facilities

AR · 6.0 miEl Dorado AR2 MW →AR · 21.3 miGeneral Dynamics7 MW →AR · 21.9 miMcClellan (AR)136 MW →AR · 24.1 miSR Camden12 MW →

Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodologyEIA-860 source