How many solar farms are in PJM?

There are 1221 operating solar farms in PJM.

What is the total solar capacity in PJM?

The total operating solar capacity in PJM is 18,596 MW.

What is the largest solar farm in PJM?

The largest solar farm in PJM is Fox Squirrel Solar at 577 MW, located in Madison, Ohio.

How many solar farms were built in PJM in 2025?

137 solar farms were built in PJM in 2025.

How many developers have solar farms in PJM?

There are 72 unique developers with operating solar farms in PJM.

Solar Farms in PJM

Explore the largest solar farms in PJM and see all the utility-scale solar projects in PJM on a map.

Last updated: June 2026

On this page, you can explore our real-time database of solar farms in PJM. Each month, we track solar projects and update our list of the largest solar farms in PJM.

As of June 2026, there are 1221 utility-scale solar farms in PJM, according to Cleanview's project tracker. Their total operating capacity is 18,596 MW. In 2025, there were 137 solar farms built in PJM. See also: planned solar farms in PJM→

Total Solar Farms

1,221

Total Capacity

18,596 MW

Built in 2025

137

PJM Solar Map

Map of solar farms in PJM. Marker size reflects capacity — only facilities with reported capacity data are shown.

Largest Solar Farms in PJM

Fox Squirrel Solar

577 MW

Year Operational: December 2023

Location: Madison, Ohio

Mammoth North Solar

400 MW

Year Operational: November 2024

Location: Starke, Indiana

Developer: Doral Renewables

AEUG Union Solar, LLC

325 MW

Year Operational: November 2024

Location: Union, Ohio

Developer: Acciona Energy

Hecate Energy Highland LLC

300 MW

Year Operational: May 2024

Location: Highland, Ohio

Developer: Hecate Energy

Yellowbud Solar, LLC

274 MW

Year Operational: June 2023

Location: Ross, Ohio

Hardin Solar III

250 MW

Year Operational: March 2025

Location: Hardin, Ohio

Developer: Invenergy

Pleinmont Solar 2

240 MW

Year Operational: August 2021

Location: Spotsylvania, Virginia

Cadence Solar Energy Center

240 MW

Year Operational: January 2026

Location: Union, Ohio

Developer: Invenergy

Hillcrest Solar

200 MW

Year Operational: July 2021

Location: Brown, Ohio

Recently Built Solar Farms in PJM

Changewater 1

11 MW

Year Operational: May 2026

Location: Warren, New Jersey

Developer: NJR Clean Energy Ventures

National Park Solar

6 MW

Year Operational: May 2026

Location: Gloucester, New Jersey

Developer: NJR Clean Energy Ventures

Clover - (IL)

5 MW

Year Operational: May 2026

Location: Whiteside, Illinois

NL DE Taylor

3 MW

Year Operational: May 2026

Location: Sussex, Delaware

TPE MD PR232

2 MW

Year Operational: May 2026

Location: Prince Georges, Maryland

TPE MD PR270

2 MW

Year Operational: May 2026

Location: Prince Georges, Maryland

Montpelier Solar Project

49 MW

Year Operational: April 2026

Location: Williams, Ohio

Developer: American Electric Power

Vineland Solar LLC

15 MW

Year Operational: April 2026

Location: Cumberland, New Jersey

2065 George St

3 MW

Year Operational: April 2026

Location: Cook, Illinois

Frequently Asked Questions

How many solar farms are in PJM?: There are 1221 operating solar farms in PJM.
What is the total solar capacity in PJM?: The total operating solar capacity in PJM is 18,596 MW.
What is the largest solar farm in PJM?: The largest solar farm in PJM is Fox Squirrel Solar at 577 MW, located in Madison, Ohio.
How many solar farms were built in PJM in 2025?: 137 solar farms were built in PJM in 2025.
How many developers have solar farms in PJM?: There are 72 unique developers with operating solar farms in PJM.

PJM Solar Map

Largest Solar Farms in PJM

Fox Squirrel Solar

Mammoth North Solar

AEUG Union Solar, LLC

Hecate Energy Highland LLC

Yellowbud Solar, LLC

Hardin Solar III

Pleinmont Solar 2

Cadence Solar Energy Center

Hillcrest Solar

Recently Built Solar Farms in PJM

Changewater 1

National Park Solar

Clover - (IL)

NL DE Taylor

TPE MD PR232

TPE MD PR270

Montpelier Solar Project

Vineland Solar LLC

2065 George St

Frequently Asked Questions

Explore Solar Farms by State

Explore by ISO

PJM Solar Map

Largest Solar Farms in PJM

Fox Squirrel Solar

Mammoth North Solar

AEUG Union Solar, LLC

Hecate Energy Highland LLC

Yellowbud Solar, LLC

Hardin Solar III

Pleinmont Solar 2

Cadence Solar Energy Center

Hillcrest Solar

Recently Built Solar Farms in PJM

Changewater 1

National Park Solar

Clover - (IL)

NL DE Taylor

TPE MD PR232

TPE MD PR270

Montpelier Solar Project

Vineland Solar LLC

2065 George St

Frequently Asked Questions

Explore Solar Farms by State

Explore by ISO