DOUGLAS DAM
SubstationTennessee · FRENCH BROAD ELEC MEMBER CORP
DOUGLAS DAM is an electric transmission substation in Tennessee, operated by FRENCH BROAD ELEC MEMBER CORP. It is classified as sub-transmission (138 kv) and connects 7 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 |
|---|---|---|---|---|
| #378 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 10.8 mi |
| #18355 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 5.4 mi |
| #24225 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 3.2 mi |
| #45657 | 161 kV | FRENCH BROAD ELEC MEMBER CORP | IN SERVICE | 24.1 mi |
| #59248 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 22.0 mi |
| #61558 | 161 kV | TENNESSEE VALLEY AUTHORITY | IN SERVICE | 8.0 mi |
| #64687 | 161 kV | TENNESSEE VALLEY AUTHORITY | — | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DOUGLAS DAM, 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 |
| Greenfield (VOLUNTEER - WATTS BAR POWER ST) | Greenfield | TN | Union County | 500 kV | 1,000 MW | 3.7 yrs | 75.1 |
| Greenfield (PHILLIPS BEND - VOLUNTEER) | Greenfield | TN | Hamblen County | 500 kV | 1,000 MW | 3.7 yrs | 73.5 |
| TAP155233 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.5 |
| UNKNOWN151203 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.4 |
| Greenfield (VOLUNTEER - BULL RUN) | Greenfield | TN | Knox County | 500 kV | 1,000 MW | 3.7 yrs | 73.3 |
| TAP151179 | Substation-Adjacent | TN | Knox County | 161 kV | 100 MW | 3.7 yrs | 73.0 |
| DUMPLIN VALLEY | Substation-Adjacent | TN | Jefferson County | 161 kV | 100 MW | 3.7 yrs | 72.4 |
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.
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This page shows a public slice of the GridCensus dataset for DOUGLAS DAM 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.