Greenfield (UNKNOWN133790 - SKOKIE (345 KV)
GreenfieldLake, Illinois · PJM
At a glance
Greenfield (UNKNOWN133790 - SKOKIE (345 KV) is a greenfield datacenter candidate site in Lake, Illinois, scoring 59.0/100 DC Readiness — 29th of 89 scored sites in the county. Its nearest substation is UNKNOWN133790. 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. GridCensus catalogs 600 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
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 Greenfield (UNKNOWN133790 - SKOKIE (345 KV) compare with other sites in Lake?
Greenfield (UNKNOWN133790 - SKOKIE (345 KV) ranks 29th of 89 scored candidate sites in Lake. Its 59.0/100 is roughly in line with the county average of 56.2. It is roughly in line with the Illinois average of 54.3 and about 11% above the national average of 53.2.
Against the Illinois average, its strongest sub-score is power availability (59 vs 37) and its weakest is speed to power (47 vs 47). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (UNKNOWN133790 - SKOKIE (345 KV) to power, fiber and other datacenters?
The nearest mapped substation, UNKNOWN133790, is the closest grid connection point on record and operates at 345 kV. The nearest located transmission bottleneck is NILES-EVERGFE B 138 KV (PJM), 16 miles away. For connectivity, the nearest internet exchange facility is NETRIX - BBN at 3.4 miles. 11 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is NETRIX - BBN, 3.4 miles away.
What are the flood, water and hazard risks at Greenfield (UNKNOWN133790 - SKOKIE (345 KV)?
At the county level, FEMA's National Risk Index rates Lake "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 Lake, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN133790 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 68.6 |
| COMMONWEALTH EDISON DES PLAINES (345KV) | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 66.2 |
| PROSPECT HEIGHTS | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 66.1 |
| TAP137894 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.8 |
| Bloom | Brownfield | 345 kV | 152 MW | 4.8 yrs | 65.2 |
| GOLF MILL | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 65.0 |
| NORTHBROOK | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.8 |
| LIBERTYVILLE | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 64.7 |
Greenfield (UNKNOWN133790 - SKOKIE (345 KV): common questions
What is the DC Readiness score of Greenfield (UNKNOWN133790 - SKOKIE (345 KV)?
Greenfield (UNKNOWN133790 - SKOKIE (345 KV) scores 59.0/100 on the GridCensus DC Readiness scale, rated good. It ranks 29th of 89 scored sites in Lake. The Lake average is 56.2 and the Illinois average is 54.3.
What is the nearest substation to Greenfield (UNKNOWN133790 - SKOKIE (345 KV)?
The nearest mapped substation is UNKNOWN133790, at 345 kV. GridCensus catalogs 600 MW of candidate capacity for the site.
Which electric utility serves Greenfield (UNKNOWN133790 - SKOKIE (345 KV)?
COMMONWEALTH EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is EXELON CORP.
What grid region is Greenfield (UNKNOWN133790 - SKOKIE (345 KV) in?
Greenfield (UNKNOWN133790 - SKOKIE (345 KV) is in the PJM region. Projects interconnecting there have averaged a 4.8-year wait from queue request to operation.
How far is Greenfield (UNKNOWN133790 - SKOKIE (345 KV) from an internet exchange?
The nearest internet exchange facility is NETRIX - BBN, about 3.4 miles away; 11 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, “Greenfield (UNKNOWN133790 - SKOKIE (345 KV), Lake, IL”, https://gridcensus.com/datacenter-sites/illinois/lake/greenfield-unknown133790-skokie-345-kv-9e305ef9 (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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