ALVIN
SubstationTexas · SOUTHWESTERN ELECTRIC POWER CO
ALVIN is an electric transmission substation in Texas, operated by SOUTHWESTERN ELECTRIC POWER CO. It is classified as sub-transmission (138 kv) and connects 2 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 |
|---|---|---|---|---|
| #81577 | 138 kV | TEXAS-NEW MEXICO POWER CO. | IN SERVICE | 0.6 mi |
| #91417 | 138 kV | SOUTHWESTERN ELECTRIC POWER CO | IN SERVICE | 6.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ALVIN, 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 |
|---|---|---|---|---|---|---|---|
| DEEPWATER | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 73.7 |
| GREENS BAYOU 345 | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 73.6 |
| WHITE OAK | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 73.6 |
| JEANETTA | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 73.0 |
| BELLAIRE | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 72.9 |
| ADDICKS | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 72.7 |
| Greens Bayou | Brownfield | TX | Harris | — | 446 MW | — | 71.9 |
| DEER PARK ENERGY CENTER | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.4 yrs | 71.4 |
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.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for ALVIN 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.