Hardin Solar III

OperatingSolar

Ranked #5 of 88 Solar plants in OH#250 of 7790 nationally

250 MW Solar operating in Hardin, OH — PJM Interconnection, LLC

EIAGEM

250 MW

Nameplate Capacity

Generators

unit

Solar Photovoltaic

Technology

2025

Operating Since

Location

Coordinates

40.6823, -83.7939

County

Hardin, OH

Nearby Plants

Hardin Solar Energy LLC
Solar150 MW · 2.7 km
Hardin Solar Energy II LLC
Solar150 MW · 5.5 km
Ohio Northern University Solar Site
Solar3 MW · 9.4 km

Status

as of 23 months ago

Latest milestonefirst panels shipped and installedWSYX · 2024-06-12

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	—
Owner(s)	Hardin Solar Energy III	Invenergy LLC	—
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

EIA Plant Profile Global Energy Monitor

Engineering & Generators

Grid Context

ISO/RTO

PJM

Market

ISO/RTO Member

NERC Region

RFC

Balancing Authority

Generation