How many data centers are in Illinois?

Aterio tracks 288 data centers in Illinois: 82 operational, 28 under construction, 155 announced and 23 land bank, delayed, withdrawn or cancelled.

How much power will data centers in Illinois require?

Operational, under construction and announced data centers in Illinois add up to an estimated 18,101 MW of power capacity.

How does Illinois rank nationally for data centers?

Eighth of 50 states and DC by pipeline capacity, with 3% of the US total of 601,425 MW.

Which county in Illinois has the most data center capacity?

Kendall County, with an estimated 5,276 MW across 51 projects, followed by Cook County with 3,188 MW.

Who are the largest data center providers in Illinois?

By estimated capacity: Prologis (3,000 MW), Power House Data Centers (1,800 MW) and T5 Data Centers (1,302 MW).

How many data centers are under construction in Illinois?

Illinois has 28 data centers under construction, out of 265 in its pipeline.

Market brief, Illinois

Data Centers in Illinois

Illinois ranks eighth nationally for data center pipeline capacity, with 18,101 MW across 265 projects, 3% of the national total.

By the Aterio data team. Data as of Oct 23, 2026.

Scale

Data centers tracked: 288
Data center capacity*: 18,101MW
Data center space*: 63.0M sq ft
Average operational size: 204,073sq ft

Pipeline by stage

In the pipeline: 265
Operational: 82
Under construction: 28
Announced: 155

* Pipeline only: operational, under construction and announced projects. The other 23 tracked projects are land bank, delayed, withdrawn or cancelled.

How Illinois compares

The Illinois mix tracks the national pipeline: 58% of its projects are announced, against 59% across the US.

Top states by estimated MW	Est. MW	Facilities
1.Texas	151,968 MW	1,428

2.Virginia	64,037 MW	1,072

3.Utah	49,175 MW	256

4.Georgia	32,357 MW	468

5.Ohio	31,238 MW	369

8.Illinois	18,101 MW	265

Top five states by pipeline capacity, and Illinois, estimated MW.

Where it is being built

Kendall County (5,276 MW) and Cook County (3,188 MW) lead Illinois, together 47% of the pipeline.

Top counties by estimated MW	Est. MW	Facilities
1.Kendall County	5,276 MW	51

2.Cook County	3,188 MW	91

3.Dekalb County	1,595 MW	18

4.Madison County	1,306 MW	11

5.Lake County	1,228 MW	21

Top five counties by estimated MW, among those with three or more projects. Projects with no county are left out.

Who is building

Prologis leads with 3,000 MW, ahead of Power House Data Centers with 1,800 MW. The five largest named providers hold 46% of the Illinois pipeline.

Top providers by estimated MW	Est. MW	Facilities
1.Prologis	3,000 MW	24

2.Power House Data Centers	1,800 MW	24

3.T5 Data Centers	1,302 MW	23

4.CyrusOne	1,203 MW	22

5.Tract	1,000 MW	5

Top five providers by estimated MW, among those with three or more projects. Undisclosed providers are left out.

From the dataset

Largest data centers in Illinois

Ranked by estimated capacity. Each facility's power and size are available in the full dataset.

1.Project Vector Building 3Edged Energy · Dekalb, Dekalb County Announced
2.Project Vector Building 1Edged Energy · Dekalb, Dekalb County Announced
3.ORD1 ChicagoCloudHQ · Des Plaines, Cook County Under construction
4.Morris Technology Park Data Center 4Tract · Morris, Grundy County Announced
5.Data Center 3TerraWatt · Alton, Madison County Announced

Free sample

Chicago Data Center 2QTS Data Centers · Chicago, Cook CountyPower 125 MWSize 465,000 sq ftAnnounced
Utility
Commonwealth Edison Co
Announced
Aug 24, 2024
Expected online
Mar 31, 2030
Microsft Illinois Azure North Central USMicrosoft · Melrose Park, Cook CountyPower 78 MWSize 705,000 sq ftOperational
Utility
Commonwealth Edison Co
Online
Jan 30, 2009
Prime Chicago - ORD01-02Prime Data Centers · Elk Grove Village, Cook CountyPower 73 MWSize 354,000 sq ftUnder construction
Utility
Commonwealth Edison Co
Announced
Sep 15, 2021
Expected online
Jun 30, 2028

Frequently asked questions

: Aterio tracks 288 data centers in Illinois: 82 operational, 28 under construction, 155 announced and 23 land bank, delayed, withdrawn or cancelled.
: Operational, under construction and announced data centers in Illinois add up to an estimated 18,101 MW of power capacity.
: Eighth of 50 states and DC by pipeline capacity, with 3% of the US total of 601,425 MW.
: Kendall County, with an estimated 5,276 MW across 51 projects, followed by Cook County with 3,188 MW.
: By estimated capacity: Prologis (3,000 MW), Power House Data Centers (1,800 MW) and T5 Data Centers (1,302 MW).
: Illinois has 28 data centers under construction, out of 265 in its pipeline.

Data centers in other states

US Data Centers: Market Analysis & Growth Forecast

Get exclusive insights on the rapidly expanding US data center market, with detailed analysis of facilities, power capacity and strategic expansions across Illinois and the rest of the US.