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191 MW Solar operating in Posey, IN — Midcontinent Independent Transmission System Operator, Inc..
191 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2025
Operating Since
Coordinates
37.9267, -87.7289
County
Posey, IN
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southern Indiana Gas & Elec Co | CenterPoint Energy | — |
| Owner(s) | Southern Indiana Gas & Elec Co | CenterPoint Energy | — |
| Status | Operating | operating | — |
Posey Solar is a 191 MW solar photovoltaic power plant located in Posey County, Indiana. The plant, which began operating in 2025, is owned by CenterPoint Energy and operated by Southern Indiana Gas & Electric Co. It utilizes a single generator and fixed-tilt solar tracking technology. Posey Solar ranks as the 20th largest solar plant in Indiana (out of 35) and 276th nationally (out of 639).
The plant's latest annual generation was 269,806 MWh, resulting in a capacity factor of 24.0%. Posey Solar operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the ReliabilityFirst Corporation (RFC) NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
13.9K MWh
Latest Month
269.8K MWh
Annual Generation
24.0%
Capacity Factor
2023
$1,606/kW
Est. Construction Cost
Total estimated cost: $306.7M
Market Position
ISO/RTO Market
MISO
LMP Node
SIGE.POSYSLR1
Pricing Hub
INDIANA.HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-26
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