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SOLAR · PJMCornerstone Solar
Cornerstone Solar is a 200 MW solar request in interconnection study in the PJM interconnection queue, in Washington County, Pennsylvania, connecting to APS.
Queue statusIn planning
- PlanningQueued Feb 2025 (current stage)
- Consented (not yet reached)
- Construction (not yet reached)
- OperatingTarget Mar 2025 (not yet reached)
- Closed (not yet reached)
Studies assess what grid upgrades the project would need and who pays for them. A signed interconnection agreement is the main step before construction.
Request details
- Queue ID
- AH1-545
- Grid region
- PJM (Mid-Atlantic, Midwest)
- Utility / transmission owner
- APS
- Developer
- Cornerstone Solar, LLC
- Connection point (POI)
- Wylie Ridge-Tidd 345kV
- Location
- Washington County, Pennsylvania
- Technology
- Solar: 200 MW
- Total requested
- 200 MW
- Service type
- Network resource (NRIS)
- Study phase
- System Impact Study
- Queue status
- Active
- Entered queue
- 25 February 2025
- Proposed online date
- March 2025
Location
Marker shows the centre of Washington County; the queue data does not give exact sites.
Power plants in Pennsylvania · Transmission lines in Pennsylvania
Other requests in Washington County
- Smith-Francis Junction 25 kVSolar · 20.0 MW · built
- Gaucho SolarSolar · 11.7 MW · built
- Gaucho SolarSolar · 8.3 MW · built
- Other project P34, Washington CountyOther · 6.4 MW · built
- Beech Hollow Energy CenterGas · 1,025 MW · withdrawn
- Gas project Z2-064, Washington CountyGas · 651 MW · withdrawn
- Gas project Y3-042, Washington CountyGas · 460 MW · withdrawn
- Coal project N40, Washington CountyCoal · 300 MW · withdrawn
- Beech HollowGas · 150 MW · withdrawn
- Gas project AA2-043, Washington CountyGas · 99.0 MW · withdrawn
- Gas project AE1-080, Washington CountyGas · 80.0 MW · withdrawn
- Onshore wind project N37, Washington CountyOnshore wind · 50.0 MW · withdrawn
Source: Lawrence Berkeley National Laboratory, Queued Up, data through end of 2025, compiled from ISO/RTO and utility queues. Check the grid operator's own queue for the latest status. Report a problem