TAP154775
SubstationTennessee · TENNESSEE VALLEY AUTHORITY
TAP154775 is an electric transmission substation in Tennessee, operated by TENNESSEE VALLEY AUTHORITY. It is classified as extra-high-voltage (500 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 |
|---|---|---|---|---|
| #20559 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.1 mi |
| #23000 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.5 mi |
| #26881 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 52.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP154775, 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 |
|---|---|---|---|---|---|---|---|
| JACKSON | Substation-Adjacent | TN | Madison County | 500 kV | 1,000 MW | 3.7 yrs | 77.6 |
| TAP154775 | Substation-Adjacent | TN | Carroll County | 500 kV | 1,000 MW | 3.7 yrs | 74.9 |
| Greenfield (JOHNSONVILLE - GLEASON) | Greenfield | TN | Weakley County | 500 kV | 1,000 MW | 3.7 yrs | 72.7 |
| Greenfield (JOHNSONVILLE - TAP154775) | Greenfield | TN | Madison County | 500 kV | 1,000 MW | 3.7 yrs | 71.6 |
| TAP152134 | Substation-Adjacent | TN | Weakley County | 161 kV | 100 MW | 3.7 yrs | 70.8 |
| Greenfield (JOHNSONVILLE - TAP154775) | Greenfield | TN | Henderson County | 500 kV | 1,000 MW | 3.7 yrs | 70.5 |
| TAP154780 | Substation-Adjacent | TN | Madison County | 161 kV | 100 MW | 3.7 yrs | 70.3 |
| TAP170497 | Substation-Adjacent | TN | Madison County | 161 kV | 100 MW | 3.7 yrs | 70.2 |
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 TAP154775 substation, Tennessee. 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.