ALCOA SW STATION
SubstationTennessee · DUKE ENERGY CAROLINAS, LLC
ALCOA SW STATION is an electric transmission substation in Tennessee, operated by DUKE ENERGY CAROLINAS, LLC. It is classified as sub-transmission (138 kv) and connects 11 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
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #3428 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.2 mi |
| #4539 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 15.5 mi |
| #5867 | 161 kV | DUKE ENERGY CAROLINAS, LLC | IN SERVICE | 27.8 mi |
| #14854 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 10.7 mi |
| #19374 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.7 mi |
| #25061 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.3 mi |
| #28632 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.3 mi |
| #29107 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.5 mi |
| #33983 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 9.6 mi |
| #45476 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 0.9 mi |
| #50328 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 2.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ALCOA SW STATION, 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 |
|---|---|---|---|---|---|---|---|
| VOLUNTEER | Substation-Adjacent | TN | Knox County | 500 kV | 1,000 MW | 3.7 yrs | 77.4 |
| BULL RUN | Substation-Adjacent | TN | Anderson County | 500 kV | 1,000 MW | 3.7 yrs | 75.7 |
| TAP152048 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 74.1 |
| TAP155213 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.8 |
| HEISKELL | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.8 |
| TAP152053 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.5 |
| TAP152058 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.5 |
| TAP155233 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.5 |
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 ALCOA SW STATION 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.