Substation-Adjacent Datacenter Sites in Illinois
Illinois has 795 substation-adjacent datacenter candidate sites. Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
795
Substation-Adjacent sites
67.8/100
Avg score (top 25)
Illinois
State
Substation-Adjacent
Type
Top substation-adjacent sites in Illinois
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| UNKNOWN122269 | Substation-Adjacent | Cook County | 345 kV | 600 MW | 3.8 yrs | 71.4 |
| UNKNOWN121936 | Substation-Adjacent | Kenosha County | 345 kV | 600 MW | 3.8 yrs | 70.6 |
| UNKNOWN124436 | Substation-Adjacent | Cook County | 345 kV | 600 MW | 3.8 yrs | 70.4 |
| UNKNOWN133790 | Substation-Adjacent | Lake County | 345 kV | 600 MW | 3.8 yrs | 68.9 |
| PLANO (765 KV) | Substation-Adjacent | Kendall County | 765 kV | 1,000 MW | 3.8 yrs | 68.9 |
| UNKNOWN122285 | Substation-Adjacent | Cook County | 345 kV | 600 MW | 3.8 yrs | 68.7 |
| CAHOKIA | Substation-Adjacent | St. Louis city | 345 kV | 600 MW | 3.8 yrs | 68.0 |
| JOLIET | Substation-Adjacent | Will County | 345 kV | 600 MW | 3.8 yrs | 67.7 |
| SUB 39 | Substation-Adjacent | Rock Island County | 345 kV | 600 MW | 3.8 yrs | 67.6 |
| RISER159741 | Substation-Adjacent | Tazewell County | 345 kV | 600 MW | 3.8 yrs | 67.1 |
| ELECTRIC LIGHT 345 KV | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.1 |
| ELMHURST | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.1 |
| UNKNOWN124699 | Substation-Adjacent | Cook County | 345 kV | 600 MW | 3.8 yrs | 67.1 |
| TAP139481 | Substation-Adjacent | St. Louis city | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| TAP138253 | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| LISLE | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| UNKNOWN122226 | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| QUAD CITIES | Substation-Adjacent | Clinton County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| OAK GROVE | Substation-Adjacent | Rock Island County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| ITASCA | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| TAP138235 | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| FARGO 345 KV | Substation-Adjacent | Peoria County | 345 kV | 600 MW | 3.8 yrs | 67.0 |
| UNKNOWN122220 | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 66.9 |
| UNKNOWN122221 | Substation-Adjacent | DuPage County | 345 kV | 600 MW | 3.8 yrs | 66.9 |
| UNKNOWN122188 | Substation-Adjacent | Clinton County | 345 kV | 600 MW | 3.8 yrs | 66.9 |
- How many substation-adjacent datacenter sites are in Illinois?
- GridCensus catalogs 795 substation-adjacent datacenter candidate sites in Illinois.
- What is a substation-adjacent datacenter site?
- Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Substation-Adjacent sites in Illinois. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.