LONGWOOD
SubstationTexas · SOUTHWESTERN ELECTRIC POWER CO
LONGWOOD is an electric transmission substation in Texas, operated by SOUTHWESTERN ELECTRIC POWER CO. It is classified as high-voltage (345 kv) and connects 8 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 |
|---|---|---|---|---|
| #21469 | 345 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 38.4 mi |
| #45866 | 345 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 19.1 mi |
| #879 | 345 kV | — | IN SERVICE | 40.4 mi |
| #27644 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 1.8 mi |
| #42152 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 0.1 mi |
| #48115 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 9.6 mi |
| #4450 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 4.8 mi |
| #10222 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 16.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LONGWOOD, 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 |
|---|---|---|---|---|---|---|---|
| LONGWOOD | Substation-Adjacent | LA | Caddo Parish | 345 kV | 600 MW | 3.4 yrs | 70.5 |
| MC WILLIE | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 70.3 |
| TAP161114 | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 69.7 |
| UNKNOWN305499 | Substation-Adjacent | TX | Marion County | 345 kV | 600 MW | 3.4 yrs | 69.6 |
| LINWOOD | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 69.0 |
| TRICHEL STREET | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 68.8 |
| TAP141990 | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 68.6 |
| WESTERN ELECTRIC | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 3.4 yrs | 68.6 |
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 LONGWOOD substation, Texas. 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.