interXdata

Illinois Interconnection Projects

interXdata tracks 2,692 interconnection projects in Illinois representing 284,234 MW of requested capacity. The dominant technology by capacity is Solar. The most active counties are Cook, Lee, Will.

2,692Total projects
283Active
1,459Operational
917Withdrawn
284,234 MWRequested capacity
28,041 MWActive capacity

Technology mix

TechnologyProjectsRequested capacity
Solar1,13584,691 MW
Wind49478,444 MW
Gas42042,331 MW
Battery28833,342 MW
Other31732,951 MW
Coal206,095 MW
Nuclear54,090 MW
Solar+Battery91,180 MW
Wind+Other1400 MW
Solar+Other1360 MW
Solar+Wind1199 MW
Wind+Battery1150 MW

Counties

CountyProjectsRequested capacity
Cook1535,813 MW
Lee14414,842 MW
Will13815,844 MW
Kankakee775,467 MW
DeKalb693,426 MW
Ogle688,086 MW
Livingston659,830 MW
Grundy6312,590 MW
McLean618,218 MW
Stephenson613,578 MW
McHenry603,043 MW
Bureau563,831 MW
Winnebago555,187 MW
Champaign542,563 MW
Kane54820 MW
Lasalle443,878 MW
Whiteside422,107 MW
Christian398,055 MW
LaSalle383,508 MW
Tazewell385,952 MW
Henry373,591 MW
Vermilion344,625 MW
Sangamon336,182 MW
Logan323,395 MW
Macon323,193 MW
Lake322,811 MW
Kendall325,431 MW
St Clair301,976 MW
Perry303,503 MW
Ford293,702 MW
Adams271,920 MW
Clay272,328 MW
DuPage261,119 MW
Peoria262,550 MW
Rock Island266,058 MW
Williamson253,021 MW
Woodford252,885 MW
Shelby254,400 MW
Clinton25375 MW
Madison241,304 MW

Largest projects

ProjectQueue IDTechnologyCapacityStatusLocation
Dresden Tazewell Mole CreekAE1-222Gas2,562.7 MWwithdrawnGrundy, Illinois
MISO Queue Project J371 — Nuclear in Ogle, IllinoisJ371Nuclear2,325.0 MWwithdrawnOgle, Illinois
Plano 345 kVAF1-200 - moved to TC1Other2,100.0 MWwithdrawnKendall, Illinois
MISO Queue Project IP05 — Other in Randolph, IllinoisIP05Other1,500.0 MWwithdrawnRandolph, Illinois
MISO Queue Project G902 — Wind in Winnebago, IllinoisG902Wind1,500.0 MWwithdrawnWinnebago, Illinois
MISO Queue Project IP14 — Coal in Washington, IllinoisIP14Coal1,500.0 MWoperationalWashington, Illinois
MISO Queue Project J372 — Nuclear in Rock Island, IllinoisJ372Nuclear1,373.0 MWwithdrawnRock Island, Illinois
Kendall-Tazewell-Dresden-Mole CreekAC1-153Gas1,300.0 MWwithdrawnGrundy, Illinois
Davis Creek-BurnhamAC1-067Gas1,254.0 MWwithdrawnCook, Illinois
Byron Generating Station6023_2Other1,224.9 MWoperationalOgle, Illinois
Braidwood Generation Station6022_2Other1,224.9 MWoperationalWill, Illinois
Byron Generating Station6023_1Other1,224.9 MWoperationalOgle, Illinois
Braidwood Generation Station6022_1Other1,224.9 MWoperationalWill, Illinois
Sullivan 765 kVY2-095Other1,211.0 MWwithdrawnRandolph, Illinois
ElwoodAC1-204Gas1,200.9 MWoperationalWill, Illinois
Steward Creek Solar Phase 165301_SC1Solar1,200.0 MWactiveLee, Illinois
LaSalle Generating Station6026_1Other1,170.0 MWoperationalLaSalle, Illinois
LaSalle Generating Station6026_2Other1,170.0 MWoperationalLaSalle, Illinois
Kendall-Tazewell & Dresden-Mole CreekAB1-122Gas1,160.0 MWoperationalGrundy, Illinois
Clinton Power Station204_1Other1,138.3 MWoperationalDeWitt, Illinois
Austin Substation 345kV BusJ955Gas1,040.0 MWoperationalSangamon County, Illinois
CollinsAA2-035Gas1,019.3 MWwithdrawnGrundy, Illinois
Dresden Generating Station869_2Other1,009.3 MWoperationalGrundy, Illinois
Quad Cities Generating Station880_2Other1,009.3 MWoperationalRock Island, Illinois
Dresden Generating Station869_3Other1,009.3 MWoperationalGrundy, Illinois
Quad Cities Generating Station880_1Other1,009.3 MWoperationalRock Island, Illinois
Quad Cities WindV4-074Wind1,000.0 MWwithdrawnHancock, Illinois
Powerton879_5Other892.8 MWoperationalTazewell, Illinois
Powerton879_6Other892.8 MWoperationalTazewell, Illinois
Prairie State Generating Station55856_PC1Other883.0 MWoperationalSt Clair, Illinois

Top developers in Illinois

Developer (canonical)ProjectsCapacity
Steward Creek Solar, LLC81,240 MW
Deriva Energy81,320 MW
Invenergy7798 MW
Wapella Bluffs Wind Project, LLC5950 MW
Leeward Renewable Energy Development, LLC51,213 MW
Mound Solar, LLC3600 MW
Plano Skies Energy Center, LLC3292 MW
Golden West Energy3415 MW
Constellation Energy Generation, LLC3392 MW
Blue Violet Energy, LLC3259 MW
Aurora Solar LLC3350 MW
Bison Meadows Wind Project, LLC3299 MW
University Park Energy, LLC2155 MW
Hoosier Energy2409 MW
RWE Solar Development, LLC2325 MW

Recent material changes

ObservedProjectFieldOldNew
2026-10-02Galva Schoolproposed_online_date2026-10-012027-10-01
2026-10-02Norris City 2proposed_online_date2027-03-012027-10-01
2026-10-02Murphysboro 2proposed_online_date2027-03-012027-10-01
2026-10-02Murphysboro 1proposed_online_date2027-03-012027-10-01
2026-10-02Cicero 3-SLCHI603proposed_online_date2027-04-012027-07-01
2026-10-02SV CSG Reeder Solarproposed_online_date2027-04-012027-06-01
2026-10-02Northlake 5-SLCHI305proposed_online_date2026-12-012027-04-01
2026-10-02Internationale Ctr 11-SLCHI321proposed_online_date2027-03-012027-04-01
2026-10-02Pike County Solarproposed_online_date2027-02-012027-03-01
2026-10-02Elk Grove 51-SLCHI151proposed_online_date2027-02-012027-03-01
2026-10-02Pivot Energy IL 70 LLCproposed_online_date2027-01-012027-02-01
2026-10-02Melrose Park 2-SLCHI547proposed_online_date2026-10-012027-01-01

Explore related data

Source last checked2026-07-31
Data last materially changed2026-10-11
Page data generated2026-10-11

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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