USUS Grid ExplorerInfrastructure intelligence
Preliminary 2025 facility recordOperating

Marseilles, IL · EIA plant 6026

LaSalle Generating Station

LaSalle Generating Station is a nuclear power facility in Marseilles, IL, with 2,340 MW of operating capacity.

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Operating capacity2,340 MW2 operating generators
Proposed capacity0 MW0 proposed generators
UtilityConstellation NuclearEIA-reported operator
Balancing authorityPJMPJM Interconnection, LLC

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Nuclear2,340 MW
ProposedNo proposed capacity reported
Reported technologiesNuclear

Nearby in IL

Related facilities

IL · 1.5 miGrand Ridge Wind Energy Center210 MW →IL · 1.5 miGrand Ridge Battery Projects36 MW →IL · 5.8 miLaSalle Solar 12 MW →IL · 5.9 miMarseilles Lock and Dam Hydro10 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