USUS Grid ExplorerInfrastructure intelligence
Preliminary 2025 facility recordOperating

Mount Vernon, IN · EIA plant 66780

Posey Solar

Posey Solar is a solar power facility in Mount Vernon, IN, with 191 MW of operating capacity.

Open on mapView IN profileOpen EIA source
Operating capacity191 MW1 operating generators
Proposed capacity0 MW0 proposed generators
UtilitySouthern Indiana Gas & Elec CoEIA-reported operator
Balancing authorityMISOMidcontinent Independent Transmission System Operator, Inc..

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Solar191 MW
ProposedNo proposed capacity reported
Reported technologiesSolar Photovoltaic

Nearby in IN

Related facilities

IN · 1.7 miA B Brown647 MW →IN · 10.8 miSABIC Innovative Plastics Mt. Vernon108 MW →IN · 11.7 miOak Hill Solar Array2 MW →IN · 15.0 miPatoka Solar250 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