Hardin Solar III — Plant Summary
- EIA Plant ID
- 68591
- Capacity
- 250 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Hardin, OH
- Operating Since
- 2025
- Generators
- 1
- Operator
- Hardin Solar Energy III
- Parent Company
- —
- Annual Generation
- 470,630 MWh
- Capacity Factor
- 25.6%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Hardin Solar III
OperatingSolar
Ranked #6 of 86 Solar plants in OH#197 of 7447 nationally
250 MW Solar operating in Hardin, OH — PJM Interconnection, LLC
EIAGEM
250 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2025
Operating Since
Location
Coordinates
40.6823, -83.7939
County
Hardin, OH
Nearby Plants
- Hardin Solar Energy LLCSolar150 MW · 2.7 km
- Hardin Solar Energy II LLCSolar150 MW · 5.5 km
- Ohio Northern University Solar SiteSolar3 MW · 9.4 km
Ownership & Operator
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 | Hardin Solar Energy III | Invenergy LLC [100%] | — |
| Owner(s) | Hardin Solar Energy III | Invenergy LLC [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
About
Hardin Solar III is a 250 MW solar photovoltaic power plant located in Hardin County, Ohio. The plant, owned and operated by Hardin Solar Energy III, began commercial operation in 2025. It utilizes a fixed-tilt solar tracking system. The plant is interconnected to the PJM Interconnection, LLC balancing authority, within the RFC NERC region.
In its latest year of operation, Hardin Solar III generated 470,630 MWh of electricity, achieving a capacity factor of 25.6%. Hardin Solar III ranks as the 5th largest solar plant in Ohio out of 31, and 137th nationally out of 639. The plant has been the subject of 3 news articles, all categorized as industry news.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
Hardin Energy Center _x0013_ Phase 3
OperationalSolar230 MWPJM
Generation
18.7K MWh
Latest Month
470.6K MWh
Annual Generation
25.6%
Capacity Factor
Financial Data
No financial data available for this plant.
Pricing & Market Data
MEDIUM confidenceMarket Position
ISO/RTO Market
PJM
LMP Node
HARDIN 34.5 KV HRDN12SP
Pricing Hub
AEP-DAYTON HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (3)Beta
Industry·corporate
Pataskala solar panel manufacturer ships first panels to Hardin County
skip ad. Solar panels installed at Hardin Solar III Energy Center. (Provided by Illuminate USA). skip ad. Illuminate USA in Pataskala begins operations.
Illuminate USA (operator)
WSYX·1 years ago
Industry·corporate
Pataskala solar panel manufacturer ships first panels to Hardin County
Built in Ohio. Used in Ohio.A companymanufacturing solar panels inPataskala shipped its first panels to a new solar energy center under...
The CW Columbus·1 years ago
Industry·corporate
Large three-phase solar project underway near McGuffey
The project is a solar power generation facility of up to 300 megawatts (MW), targeted to begin operating in 2023.
Bluffton Icon·4 years ago
Last updated 2026-03-14
View all articles