Mark Center Solar Project
49.9 MW generation in Defiance, OH · In queue since November 2016 · Proposed COD September 2026
49.9 MW
Capacity
1
Components
Solar
9y 6m
In Queue
IA Executed
IA Status
COD target: 2026
Total Duration
9y 10m
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: 2026-09-30
The Mark Center Solar Project is a proposed 49.9 MW solar generation project located in Defiance County, Ohio. The project is in the PJM Interconnection queue as entry PJM-AC1-167, with a queue entry date of November 1, 2016. The proposed commercial operation date is September 30, 2026.
The project's interconnection agreement has been executed. The interconnecting utility is AEP. The point of interconnection is the Mark Center 69kV substation. The Mark Center Solar Project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
OH
County
Defiance
Grid Region
PJM Interconnection
Market
ISO/RTO Member
Developer
—
Utility
AEP
Entity
PJM
Service Type
—
Point of Interconnection
Mark Center 69kV
Data Source
LBNL + Live
- ISO / RTO
- PJM
- Trading Hub
- AEP-DAYTON HUB
- Hub Confidence
- MEDIUM
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.
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