Flat Iron Building
IndustrialCook County, Illinois · PJM
At a glance
Flat Iron Building is an industrial datacenter candidate site in Cook County, Illinois, scoring 52.8/100 DC Readiness — 639th of 745 scored sites in the county. It sits in the PJM grid region and the COMMONWEALTH EDISON CO service territory, where interconnection has averaged 4.8 years from request to operation.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Risk & environment
Location context
Regulatory climate
New-DC state tax exemptions suspended for 2 years (from Jul 2026).
Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
Site location
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How does Flat Iron Building compare with other sites in Cook County?
Flat Iron Building ranks 639th of 745 scored candidate sites in Cook County. Its 52.8/100 is roughly in line with the county average of 54.5. It is roughly in line with the Illinois average of 54.3 and roughly in line with the national average of 53.2.
Against the Illinois average, its strongest sub-score is fiber connectivity (76 vs 71) and its weakest is power availability (30 vs 37). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Flat Iron Building to power, fiber and other datacenters?
The nearest located transmission bottleneck is Chicago - Praxair3 138 kV l/o Wilton Center - Dumont 765 kV (PJM), 11 miles away. For connectivity, the nearest internet exchange facility is NETRIX - ALSIP at 12.2 miles. 18 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is NETRIX - ALSIP, 12.2 miles away.
What are the flood, water and hazard risks at Flat Iron Building?
At the county level, FEMA's National Risk Index rates Cook County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Cook County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN122269 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 71.2 |
| UNKNOWN124436 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 70.1 |
| UNKNOWN122285 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 68.5 |
| UNKNOWN124699 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 66.7 |
| UNKNOWN122531 | Substation-Adjacent | 345 kV | 600 MW | 3.0 yrs | 65.9 |
| BEDFORD PARK | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.7 |
| BLUE ISLAND | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.7 |
| UNKNOWN122289 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.6 |
Flat Iron Building: common questions
What is the DC Readiness score of Flat Iron Building?
Flat Iron Building scores 52.8/100 on the GridCensus DC Readiness scale, rated fair. It ranks 639th of 745 scored sites in Cook County. The Cook County average is 54.5 and the Illinois average is 54.3.
Which electric utility serves Flat Iron Building?
COMMONWEALTH EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is EXELON CORP.
What grid region is Flat Iron Building in?
Flat Iron Building is in the PJM region. Projects interconnecting there have averaged a 4.8-year wait from queue request to operation.
How far is Flat Iron Building from an internet exchange?
The nearest internet exchange facility is NETRIX - ALSIP, about 12.2 miles away; 18 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Flat Iron Building, Cook County, IL”, https://gridcensus.com/datacenter-sites/illinois/cook-county/flat-iron-building-24c55cf1 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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Every site and score for Flat Iron Building, Cook County is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.