TRINITY
SubstationAlabama · TENNESSEE VALLEY AUTHORITY
TRINITY is an electric transmission substation in Alabama, operated by TENNESSEE VALLEY AUTHORITY. It is classified as extra-high-voltage (500 kv) and connects 13 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 |
|---|---|---|---|---|
| #41666 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.9 mi |
| #36842 | 500 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 10.8 mi |
| #4191 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.5 mi |
| #5515 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 7.4 mi |
| #17409 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.4 mi |
| #21152 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 9.3 mi |
| #23874 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 9.3 mi |
| #38066 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.9 mi |
| #41891 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.5 mi |
| #43840 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 10.3 mi |
| #1025 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 11.0 mi |
| #44055 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TRINITY, 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 |
|---|---|---|---|---|---|---|---|
| LIMESTONE | Substation-Adjacent | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 78.3 |
| UNKNOWN114484 | Substation-Adjacent | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 75.8 |
| MAURY | Substation-Adjacent | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 75.8 |
| BROWNS FERRY | Substation-Adjacent | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 75.7 |
| Greenfield (BROWNS FERRY - MADISON) | Greenfield | AL | Madison County | 500 kV | 1,000 MW | 3.7 yrs | 72.6 |
| Greenfield (BROWNS FERRY - LIMESTONE) | Greenfield | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 71.5 |
| Greenfield (BROWNS FERRY - MADISON) | Greenfield | AL | Limestone County | 500 kV | 1,000 MW | 3.7 yrs | 71.2 |
| UNKNOWN114306 | Substation-Adjacent | AL | Madison County | 161 kV | 100 MW | 3.7 yrs | 70.9 |
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 TRINITY substation, Alabama. 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.