PONTIAC MIDPOINT
SubstationIllinois · COMMONWEALTH EDISON CO
PONTIAC MIDPOINT is an electric transmission substation in Illinois, operated by COMMONWEALTH EDISON CO. 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 |
|---|---|---|---|---|
| #6540 | 345 kV | COMMONWEALTH EDISON CO | IN SERVICE | 43.4 mi |
| #6589 | 345 kV | COMMONWEALTH EDISON CO | IN SERVICE | 11.6 mi |
| #23888 | 345 kV | — | IN SERVICE | 27.5 mi |
| #30945 | 345 kV | — | IN SERVICE | 31.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of PONTIAC MIDPOINT, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN122084 | Substation-Adjacent | IL | McLean County | 345 kV | 600 MW | 4.6 yrs | 72.5 |
| BLUE MOUND | Substation-Adjacent | IL | McLean County | 345 kV | 600 MW | 4.6 yrs | 71.1 |
| PONTIAC MIDPOINT | Substation-Adjacent | IL | Livingston County | 345 kV | 600 MW | 4.6 yrs | 70.9 |
| UNKNOWN122023 | Substation-Adjacent | IL | Grundy County | 345 kV | 600 MW | 4.6 yrs | 67.6 |
| SOUTH BLOOMINGTON | Substation-Adjacent | IL | McLean County | 345 kV | 600 MW | 4.6 yrs | 67.6 |
| UNKNOWN122078 | Substation-Adjacent | IL | McLean County | 138 kV | 100 MW | 4.6 yrs | 67.3 |
| TAP138270 | Substation-Adjacent | IL | McLean County | 138 kV | 100 MW | 4.6 yrs | 66.6 |
| UNKNOWN123124 | Substation-Adjacent | IL | McLean County | 138 kV | 100 MW | 4.6 yrs | 66.2 |
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 PONTIAC MIDPOINT 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.