Illinois Interconnection Projects
interXdata tracks 2,636 interconnection projects in Illinois representing 284,071 MW of requested capacity. The dominant technology by capacity is Solar. The most active counties are Cook, Lee, Will.
2,636Total projects
288Active
1,411Operational
903Withdrawn
284,071 MWRequested capacity
30,017 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Solar | 1,078 | 84,028 MW |
| Wind | 495 | 78,944 MW |
| Gas | 420 | 42,331 MW |
| Battery | 288 | 33,342 MW |
| Other | 317 | 32,951 MW |
| Coal | 20 | 6,095 MW |
| Nuclear | 5 | 4,090 MW |
| Solar+Battery | 9 | 1,180 MW |
| Wind+Other | 1 | 400 MW |
| Solar+Other | 1 | 360 MW |
| Solar+Wind | 1 | 199 MW |
| Wind+Battery | 1 | 150 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Cook | 151 | 5,810 MW |
| Lee | 144 | 14,842 MW |
| Will | 137 | 15,839 MW |
| Kankakee | 74 | 5,461 MW |
| Ogle | 67 | 8,084 MW |
| Livingston | 64 | 9,825 MW |
| DeKalb | 63 | 3,414 MW |
| McLean | 61 | 8,218 MW |
| Grundy | 60 | 12,581 MW |
| McHenry | 57 | 3,032 MW |
| Stephenson | 56 | 3,566 MW |
| Bureau | 56 | 3,831 MW |
| Winnebago | 55 | 5,187 MW |
| Kane | 53 | 815 MW |
| Champaign | 50 | 2,554 MW |
| Lasalle | 44 | 3,878 MW |
| Whiteside | 42 | 2,107 MW |
| Christian | 39 | 8,055 MW |
| LaSalle | 38 | 3,508 MW |
| Tazewell | 37 | 5,947 MW |
| Henry | 36 | 3,589 MW |
| Vermilion | 34 | 4,625 MW |
| Kendall | 33 | 5,436 MW |
| Sangamon | 33 | 6,182 MW |
| Logan | 32 | 3,395 MW |
| Lake | 31 | 2,806 MW |
| Macon | 30 | 3,096 MW |
| Perry | 30 | 3,503 MW |
| St Clair | 29 | 1,974 MW |
| Ford | 29 | 3,702 MW |
| Adams | 27 | 1,920 MW |
| Clay | 27 | 2,328 MW |
| Rock Island | 26 | 6,058 MW |
| DuPage | 26 | 1,119 MW |
| Shelby | 25 | 4,400 MW |
| Clinton | 24 | 372 MW |
| Woodford | 24 | 2,880 MW |
| Williamson | 24 | 3,017 MW |
| Madison | 23 | 1,299 MW |
| Mclean | 22 | 2,943 MW |
Largest projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| Dresden Tazewell Mole Creek | AE1-222 | Gas | 2,562.7 MW | withdrawn | Grundy, Illinois |
| MISO Queue Project J371 — Nuclear in Ogle, Illinois | J371 | Nuclear | 2,325.0 MW | withdrawn | Ogle, Illinois |
| Plano 345 kV | AF1-200 - moved to TC1 | Other | 2,100.0 MW | withdrawn | Kendall, Illinois |
| MISO Queue Project IP05 — Other in Randolph, Illinois | IP05 | Other | 1,500.0 MW | withdrawn | Randolph, Illinois |
| MISO Queue Project G902 — Wind in Winnebago, Illinois | G902 | Wind | 1,500.0 MW | withdrawn | Winnebago, Illinois |
| MISO Queue Project IP14 — Coal in Washington, Illinois | IP14 | Coal | 1,500.0 MW | operational | Washington, Illinois |
| MISO Queue Project J372 — Nuclear in Rock Island, Illinois | J372 | Nuclear | 1,373.0 MW | withdrawn | Rock Island, Illinois |
| Kendall-Tazewell-Dresden-Mole Creek | AC1-153 | Gas | 1,300.0 MW | withdrawn | Grundy, Illinois |
| Davis Creek-Burnham | AC1-067 | Gas | 1,254.0 MW | withdrawn | Cook, Illinois |
| Braidwood Generation Station | 6022_2 | Other | 1,224.9 MW | operational | Will, Illinois |
| Byron Generating Station | 6023_1 | Other | 1,224.9 MW | operational | Ogle, Illinois |
| Byron Generating Station | 6023_2 | Other | 1,224.9 MW | operational | Ogle, Illinois |
| Braidwood Generation Station | 6022_1 | Other | 1,224.9 MW | operational | Will, Illinois |
| Sullivan 765 kV | Y2-095 | Other | 1,211.0 MW | withdrawn | Randolph, Illinois |
| Elwood | AC1-204 | Gas | 1,200.9 MW | operational | Will, Illinois |
| Steward Creek Solar Phase 1 | 65301_SC1 | Solar | 1,200.0 MW | active | Lee, Illinois |
| LaSalle Generating Station | 6026_1 | Other | 1,170.0 MW | operational | LaSalle, Illinois |
| LaSalle Generating Station | 6026_2 | Other | 1,170.0 MW | operational | LaSalle, Illinois |
| Kendall-Tazewell & Dresden-Mole Creek | AB1-122 | Gas | 1,160.0 MW | operational | Grundy, Illinois |
| Clinton Power Station | 204_1 | Other | 1,138.3 MW | operational | DeWitt, Illinois |
| Austin Substation 345kV Bus | J955 | Gas | 1,040.0 MW | operational | Sangamon County, Illinois |
| Collins | AA2-035 | Gas | 1,019.3 MW | withdrawn | Grundy, Illinois |
| Quad Cities Generating Station | 880_1 | Other | 1,009.3 MW | operational | Rock Island, Illinois |
| Dresden Generating Station | 869_2 | Other | 1,009.3 MW | operational | Grundy, Illinois |
| Quad Cities Generating Station | 880_2 | Other | 1,009.3 MW | operational | Rock Island, Illinois |
| Dresden Generating Station | 869_3 | Other | 1,009.3 MW | operational | Grundy, Illinois |
| Quad Cities Wind | V4-074 | Wind | 1,000.0 MW | withdrawn | Hancock, Illinois |
| Powerton | 879_5 | Other | 892.8 MW | operational | Tazewell, Illinois |
| Powerton | 879_6 | Other | 892.8 MW | operational | Tazewell, Illinois |
| Prairie State Generating Station | 55856_PC1 | Other | 883.0 MW | operational | St Clair, Illinois |
Top developers in Illinois
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| Deriva Energy | 8 | 1,320 MW |
| Steward Creek Solar, LLC | 8 | 1,240 MW |
| Invenergy | 7 | 798 MW |
| Leeward Renewable Energy Development, LLC | 5 | 1,213 MW |
| Wapella Bluffs Wind Project, LLC | 5 | 950 MW |
| Constellation Energy Generation, LLC | 3 | 392 MW |
| Blue Violet Energy, LLC | 3 | 259 MW |
| Bison Meadows Wind Project, LLC | 3 | 299 MW |
| Plano Skies Energy Center, LLC | 3 | 292 MW |
| Golden West Energy | 3 | 415 MW |
| Mound Solar, LLC | 3 | 600 MW |
| Aurora Solar LLC | 3 | 350 MW |
| Blackstone Wind Farm, LLC | 2 | 100 MW |
| Rolling Farms Wind Project, LLC | 2 | 106 MW |
| Lexington Chenoa Wind Farm LLC | 2 | 300 MW |
Recent material changes
| Observed | Project | Field | Old | New |
|---|---|---|---|---|
| 2026-08-27 | OAK GROVE - SUB 93 LOUISA 345.0kV | status | operational | withdrawn |
| 2026-08-27 | OAK GROVE - SUB 93 LOUISA 345.0kV | withdrawn_date | — | 2026-08-25 |
| 2026-08-26 | Powerton-Nevada 345 kV | operational_date | — | 2026-10-30 |
| 2026-08-26 | Powerton-Nevada 345 kV | status | active | operational |
| 2026-08-26 | Powerton-Nevada 345 kV | proposed_online_date | 2026-10-30 | — |
| 2026-08-20 | 4LATHAM-4N DEC E 138 kV | phase | Phase 2 | — |
| 2026-08-19 | Greenway 138 kV | capacity_mw | 0.0 | 99 |
| 2026-08-19 | Finks 138 kV | capacity_mw | 0.0 | 99 |
| 2026-08-15 | Finks 138 kV | new_project | — | operational |
| 2026-08-15 | Greenway 138 kV | new_project | — | operational |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; MISO — generator interconnection queue; PJM — new-services interconnection queue. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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