TAP137720
SubstationIllinois · COMMONWEALTH EDISON CO
TAP137720 is an electric transmission substation in Illinois, operated by COMMONWEALTH EDISON CO. It is classified as sub-transmission (138 kv) and connects 3 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 |
|---|---|---|---|---|
| #15151 | 138 kV | — | IN SERVICE | 30.6 mi |
| #37057 | 138 kV | COMMONWEALTH EDISON CO | IN SERVICE | 31.2 mi |
| #37176 | 138 kV | — | IN SERVICE | 0.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP137720, 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 |
|---|---|---|---|---|---|---|---|
| HENNEPIN | Substation-Adjacent | IL | Putnam County | 138 kV | 100 MW | 4.6 yrs | 65.7 |
| BIG SKY WIND LLC | Substation-Adjacent | IL | Lee County | 138 kV | 100 MW | 2.2 yrs | 65.1 |
| PERU (IL) | Substation-Adjacent | IL | LaSalle County | 138 kV | 100 MW | 4.6 yrs | 65.1 |
| UNKNOWN123356 | Substation-Adjacent | IL | Putnam County | 138 kV | 100 MW | 4.6 yrs | 64.9 |
| UNKNOWN123360 | Substation-Adjacent | IL | Whiteside County | 138 kV | 100 MW | 2.2 yrs | 64.2 |
| UNKNOWN122006 | Substation-Adjacent | IL | Bureau County | 138 kV | 100 MW | 4.6 yrs | 64.0 |
| EAST KEWANEE | Substation-Adjacent | IL | Stark County | 138 kV | 100 MW | 4.6 yrs | 63.2 |
| TAP137724 | Substation-Adjacent | IL | Putnam County | 138 kV | 100 MW | 4.6 yrs | 62.8 |
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 TAP137720 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.