COFFEEN N
SubstationIllinois · AMEREN ILLINOIS COMPANY
COFFEEN N is an electric transmission substation in Illinois, operated by AMEREN ILLINOIS COMPANY. It is classified as high-voltage (345 kv) and connects 4 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #1796 | 345 kV | AMEREN ILLINOIS COMPANY | IN SERVICE | 22.0 mi |
| #6985 | 345 kV | — | IN SERVICE | 0.3 mi |
| #24627 | 345 kV | — | IN SERVICE | 0.3 mi |
| #58093 | 138 kV | — | IN SERVICE | 4.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of COFFEEN N, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| PANA | Substation-Adjacent | IL | Christian County | 345 kV | 600 MW | 4.6 yrs | 69.8 |
| COFFEEN | Substation-Adjacent | IL | Bond County | 345 kV | 600 MW | 4.6 yrs | 67.1 |
| Coffeen | Brownfield | IL | Bond County | — | 1,005 MW | 4.6 yrs | 67.0 |
| UNKNOWN122516 | Substation-Adjacent | IL | Christian County | 138 kV | 100 MW | 4.6 yrs | 66.9 |
| GREENVILLE | Substation-Adjacent | IL | Bond County | 138 kV | 100 MW | 4.6 yrs | 65.4 |
| TAP139402 | Substation-Adjacent | IL | Fayette County | 138 kV | 100 MW | 4.6 yrs | 64.9 |
| Greenfield (COFFEEN - PANA) | Greenfield | IL | Christian County | 345 kV | 600 MW | 4.6 yrs | 64.9 |
| UNKNOWN172167 | Substation-Adjacent | IL | Montgomery County | 138 kV | 100 MW | 4.6 yrs | 64.6 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for COFFEEN N substation, Illinois. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.