Winnebago County, IL interconnection queue
2 interconnection applications are pending in Winnebago County, IL, requesting 450 MW of new generating capacity, as of 15 August 2026. 5 projects have been built here and 17 have been withdrawn since 2004.
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 Winnebago County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Battery | 1 | 330 MW |
| Solar | 1 | 120 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 5 | 1.2 GW | 20.8% |
| Still pending | 2 | 450 MW | 8.3% |
| Withdrawn | 17 | 2.0 GW | 70.8% |
| 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 |
|---|---|---|---|---|---|
| Rockford | Gas | 360 MW | completed | 2017-03 | PJM |
| Rockford II 138 kV | Battery | 330 MW | active | 2021-09 | PJM |
| Rockford | Gas | 320 MW | completed | 2016-10 | PJM |
| Wempletown 345 kV | Solar | 224 MW | withdrawn | 2021-09 | PJM |
| Wempletown 345kV | Wind | 200 MW | withdrawn | 2004-04 | PJM |
| Wempletown-Byron 345kV | Wind | 200 MW | withdrawn | 2005-07 | PJM |
| Wempletown 345 kV | Solar | 200 MW | withdrawn | 2018-03 | PJM |
| Rockford II | Gas | 180 MW | completed | 2017-03 | PJM |
| Wempletown 138 kV | Solar | 175 MW | withdrawn | 2021-09 | PJM |
| Wempletown 138 kV | Battery | 175 MW | withdrawn | 2021-09 | PJM |
| Rockford II | Gas | 173 MW | completed | 2016-10 | PJM |
| Wempletown 138 kV | Solar | 160 MW | withdrawn | 2022-03 | PJM |
| Wempletown 138 kV | Battery | 160 MW | withdrawn | 2022-03 | PJM |
| Sabrooke 138kV | Gas | 153 MW | completed | 2008-12 | PJM |
| Wempletown 138 kV | Solar | 150 MW | withdrawn | 2018-03 | PJM |
How this county ranks
Winnebago County ranks #657 of 1,607 US counties by capacity currently queued, and #49 of 64 in Illinois.
Other Illinois counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Lee County | 12 | 6.4 GW |
| Will County | 5 | 4.3 GW |
| McLean County | 11 | 2.9 GW |
| Ogle County | 5 | 2.9 GW |
| LaSalle County | 7 | 2.8 GW |
| Christian County | 8 | 2.3 GW |
| Peoria County | 7 | 2.1 GW |
| Tazewell County | 10 | 1.9 GW |
Go deeper on Winnebago 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 Winnebago County on the map County reports All of Illinois