Mercer County, NJ interconnection queue
1 interconnection applications are pending in Mercer County, NJ, requesting 170 MW of new generating capacity, as of 15 August 2026. 6 projects have been built here and 19 have been withdrawn since 2000.
Source: interconnection queues published by PJM. Parsed and normalised by Watt Street. Data as of 15 August 2026. A queued project is a request, not a commitment.
What is waiting in Mercer County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Battery | 1 | 170 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 6 | 17 MW | 23.1% |
| Still pending | 1 | 170 MW | 3.8% |
| Withdrawn | 19 | 745 MW | 73.1% |
| Suspended | 0 | — | 0.0% |
Withdrawal is the ordinary outcome of an interconnection application nationally, not a sign of a problem in this county. Most withdrawals are a developer testing a site and moving on.
The largest projects on file
| Project | Fuel | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| Mercer 230kV | Gas | 550 MW | withdrawn | 2000-07 | PJM |
| Mercer 230 kV | Battery | 170 MW | active | 2019-09 | PJM |
| Windsor 230 kV | Battery | 100 MW | withdrawn | 2020-01 | PJM |
| Pleasant Valley 230 kV | Solar | 20 MW | withdrawn | 2019-09 | PJM |
| Twin Rivers-Windsor 34.5kV | Solar | 13 MW | withdrawn | 2010-09 | PJM |
| Yardville 138kV | Solar | 10 MW | withdrawn | 2011-04 | PJM |
| Lawrence 26kV | Solar | 10 MW | withdrawn | 2011-04 | PJM |
| Hightstown | Solar | 10 MW | withdrawn | 2011-07 | PJM |
| Lawrence 26kV | Solar | 9 MW | withdrawn | 2011-01 | PJM |
| Crosswicks 13kV | Solar | 8 MW | completed | 2010-04 | PJM |
| Princeton University 69 kV | Solar | 5 MW | completed | 2020-03 | PJM |
| AH2-254 | Solar | 5 MW | withdrawn | 2022-03 | PJM |
| Yardville 13kV | Solar | 4 MW | withdrawn | 2012-02 | PJM |
| Laurence 13.2 kV | Solar | 4 MW | withdrawn | 2018-12 | PJM |
| AE2-198 | Solar | 3 MW | withdrawn | 2019-03 | PJM |
How this county ranks
Mercer County ranks #976 of 1,607 US counties by capacity currently queued, and #8 of 21 in New Jersey.
Other New Jersey counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Salem County | 3 | 2.8 GW |
| Bergen County | 2 | 2.0 GW |
| Union County | 2 | 1.6 GW |
| Hudson County | 2 | 350 MW |
| Atlantic County | 3 | 308 MW |
| Camden County | 1 | 300 MW |
| Warren County | 7 | 181 MW |
| Cumberland County | 3 | 149 MW |
Go deeper on Mercer County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Mercer County on the map County reports All of New Jersey