Cook County, Illinois
Cook County, Illinois has 2.2 GW of data centers on record, planned to operating, across 48 records, against 1.4 GW of generation operating inside the county. The queue adds 510.4 MW of planned generation across 21 projects, 2 of them past their listed in-service date.
Cook County and its neighbors
Counties shaded by data center MW on record, planned to operating. 5 of its 5 neighboring counties have pages of their own. The rest are in the member database.
Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers
more data center MW than operating generation in the county. Cook County's own plants cover 63.3% of the load on record, and the planned pipeline adds 510.4 MW.
Data centers by status
48 records, 2.2 GW
The data center pipeline
31 records list a year online or expected, from 2009 to 2029. The largest expected additions are 275 MW listed for 2026 and 232.2 MW for 2027. 17 records list no year.
Data center MW by year online or expected
Records not cancelled, by listed year. 2026 onward is planned or under construction.
View as table
| Year | Records | MW |
|---|---|---|
| 2009 | 1 | 158 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 16 |
| 2016 | 1 | 125 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 2 | 52 |
| 2021 | 0 | 0 |
| 2022 | 5 | 164 |
| 2023 | 1 | 60 |
| 2024 | 2 | 82 |
| 2025 | 3 | 163 |
| 2026 | 6 | 275 |
| 2027 | 5 | 232 |
| 2028 | 3 | 203 |
| 2029 | 1 | 110 |
Who is building in Cook
Data center developers by MW on record. Top 6 of 21.
View as table
| Developer | Sites | MW |
|---|---|---|
| Microsoft | 7 | 380 |
| Aligned | 4 | 322 |
| Compass Datacenters | 5 | 254 |
| CloudHQ | 1 | 252 |
| Prime Data Centers | 3 | 234 |
| QTS | 1 | 125 |
Power generation in the county
93 plants operate inside Cook County, 1.4 GW. The queue adds 510.4 MW across 21 projects, and 2 of them are past their listed in-service date.
Operating and planned generation by technology
MW in Cook County
View as table
| Technology | Status | Projects | MW |
|---|---|---|---|
| Natural Gas | Operating | 52 | 1,033.6 |
| Natural Gas | Planned | 2 | 8.2 |
| Battery Storage | Planned | 5 | 475 |
| Oil | Operating | 16 | 274.6 |
| Solar | Operating | 22 | 46.7 |
| Solar | Planned | 14 | 27.2 |
| Landfill Gas | Operating | 3 | 9 |
Planned generation by listed in-service year
MW. Years before 2026 are past due. 1 planned project lists no date and is left out.
View as table
| Year | Planned projects | MW |
|---|---|---|
| 2023 | 2 | 170 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 13 | 25.3 |
| 2027 | 3 | 10.1 |
| 2028 | 1 | 20 |
| 2029 | 0 | 0 |
| 2030 | 1 | 200 |
Cook County against its neighbors
Will County has the most data center MW among the neighbors, 2.1 GW, 97% of Cook County's. 5 of the 5 have more generation operating than data center MW on record.
| County | Data center records | Data center MW | Operating generation MW | Planned generation MW | Data center MW per MW operating |
|---|---|---|---|---|---|
| Cook County this page | 48 | 510 | 1.6x | ||
| Will County | 25 | 7,266 | 0.26x | ||
| DuPage County | 8 | 14 | 0.31x | ||
| Lake County | 1 | 640 | 0.04x | ||
| Kane County | 0 | 17 | 0x | ||
| McHenry County | 0 | 2,017 | 0x |
Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.
6 counties shownWhat changed since June 4, 2026
14 projects in Cook County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.
Every change in Cook County
Project, what changed, technology, MW and the dates that moved, for all 14 changes.
| Project | Change | Technology | MW | Previous date | New date |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.
Every record in Cook County
Campus or project name, developer, status, MW, year and the developer’s contacts, for all 162 records. Filter, sort and export to Excel.
| Project or campus | Developer | Status | MW | Year | Contacts |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see every field and can export up to 1,000 rows a month on Solo, unlimited on Unlimited.
Get alerts for Cook County
We email you when a data center or power project in Cook County is added, changes status, signs an interconnection agreement or slips its date. One email per snapshot, only when something changed.
Open every campus, project and contact in Cook County.
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