Prairie 345 kV
150 MW generation in McHenry, IL · In queue since March 2025
150 MW
Capacity
0
Components
1 year
In Queue
—
IA Status
Total Duration
1 year
Interconnection request submitted to ISO/RTO
PJM processes interconnection requests through multi-phase System Impact Studies (SIS).
Typical: ~48 months (historically longest)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Commercial operation date not yet determined
State
IL
County
McHenry
Region
PJM
Developer
—
Utility
ComEd
Entity
PJM
Data Source
Live · PJM
ComEd opens expanded Wilton Center substation in Illinois
ComEd powered up the expansion of its 765 kilovolt Wilton Center substation in southern Will County in Illinois. The substation expansion is a necessary...
ComEd opens expanded Wilton Center substation in Illinois
ComEd powered up the expansion of its 765 kilovolt Wilton Center substation in southern Will County in Illinois. The substation expansion is a necessary...
ComEd opens expanded Wilton Center substation in Illinois
ComEd powered up the expansion of its 765 kilovolt Wilton Center substation in southern Will County in Illinois. The substation expansion is a necessary...
ComEd opens expanded Wilton Center substation in Illinois
ComEd powered up the expansion of its 765 kilovolt Wilton Center substation in southern Will County in Illinois. The substation expansion is a necessary...
Last updated 2026-03-26