TAP137879
SubstationMichigan · COMMONWEALTH EDISON CO
TAP137879 is an electric transmission substation in Michigan, 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 |
|---|---|---|---|---|
| #559 | 138 kV | COMMONWEALTH EDISON CO | IN SERVICE | 3.9 mi |
| #5528 | 138 kV | COMMONWEALTH EDISON CO | IN SERVICE | 7.8 mi |
| #47679 | 138 kV | COMMONWEALTH EDISON CO | IN SERVICE | 2.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP137879, 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 |
|---|---|---|---|---|---|---|---|
| TAP137918 | Substation-Adjacent | IL | Carroll County | 161 kV | 100 MW | 2.2 yrs | 68.2 |
| UNKNOWN121886 | Substation-Adjacent | IL | Carroll County | 161 kV | 100 MW | 1.4 yrs | 67.5 |
| TAP136966 | Substation-Adjacent | WI | Green County | 138 kV | 100 MW | 1.4 yrs | 67.4 |
| ALBANY | Substation-Adjacent | WI | Green County | 138 kV | 100 MW | 1.4 yrs | 67.4 |
| Greenfield (BYRON - TAP137909) | Greenfield | IL | Ogle County | 345 kV | 600 MW | 2.2 yrs | 67.1 |
| NORTH MONROE | Substation-Adjacent | WI | Green County | 138 kV | 100 MW | 1.4 yrs | 67.1 |
| DARLINGTON | Substation-Adjacent | WI | Lafayette County | 138 kV | 100 MW | 1.4 yrs | 66.5 |
| UNKNOWN124268 | Substation-Adjacent | IL | Ogle County | 138 kV | 100 MW | 2.2 yrs | 66.0 |
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 TAP137879 substation, Michigan. 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.