Marion County Solar Project
99.96 MW generation in Marion, OH · In queue since April 2017 · Proposed COD December 2025
99.96 MW
Capacity
1
Components
Solar
9y 1m
In Queue
IA Executed
IA Status
COD target: 2025
Total Duration
8y 8m
Schedule
4 months past proposed COD
Interconnection request submitted to ISO/RTO
PJM processes interconnection requests through multi-phase System Impact Studies (SIS).
Typical: ~48 months (historically longest)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 12–24 months
Proposed COD: 2025-12-31
The Marion County Solar Project is a proposed solar generation project with a total capacity of 99.96 MW. Located in Marion County, Ohio, the project is interconnected within the PJM Interconnection queue as entry PJM-AC2-195. The queue entry date is April 1, 2017, and the proposed commercial operation date is December 31, 2025. The interconnection agreement (IA) has been executed. The point of interconnection (POI) is the Galion-Roberts South 138 kV line.
The project is linked to the existing Marion County Solar Project operating plant (EIA ID 66860). The project has appeared in recent news coverage related to regulatory matters and deals.
Generated from interconnection queue and public data sources
State
OH
County
Marion
Grid Region
PJM Interconnection
Market
ISO/RTO Member
Developer
—
Utility
ATSI
Entity
PJM
Service Type
—
Point of Interconnection
Galion-Roberts South 138 kV
Data Source
LBNL + Live
- ISO / RTO
- PJM
- Trading Hub
- AEP-DAYTON HUB
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- 02HAMILT138 KV LD1
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
Last updated 2026-03-26
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