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Preliminary 2025 facility recordOperating

Marshalltown, IA · EIA plant 58236

Marshalltown Generating Station

Marshalltown Generating Station is a oil & gas power facility in Marshalltown, IA, with 709 MW of operating capacity.

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Operating capacity709 MW5 operating generators
Proposed capacity0 MW0 proposed generators
UtilityInterstate Power and Light CoEIA-reported operator
Balancing authorityMISOMidcontinent Independent Transmission System Operator, Inc..

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Oil & gas706 MW
Solar3 MW
Storage0 MW
ProposedNo proposed capacity reported
Reported technologiesBatteriesNatural Gas Fired Combined CycleSolar Photovoltaic

Nearby in IA

Related facilities

IA · 0.7 miMarshalltown189 MW →IA · 1.5 miAlliant SBD 9107 JBS USA11 MW →IA · 9.4 miVienna Wind Farm150 MW →IA · 11.5 miLaurel Wind Farm123 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