SAN MIGUEL
SubstationTexas · AEP TEXAS CENTRAL COMPANY
SAN MIGUEL is an electric transmission substation in Texas, operated by AEP TEXAS CENTRAL COMPANY. It is classified as high-voltage (345 kv) and connects 10 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 |
|---|---|---|---|---|
| #86438 | 345 kV | AEP TEXAS CENTRAL COMPANY | — | 63.2 mi |
| #88268 | 345 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 30.7 mi |
| #90479 | 345 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 63.1 mi |
| #90617 | 345 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 105.4 mi |
| #84792 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 0.2 mi |
| #80747 | 138 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 15.4 mi |
| #85385 | 138 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 4.6 mi |
| #80748 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 21.0 mi |
| #84035 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 28.1 mi |
| #84526 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 0.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SAN MIGUEL, 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 |
|---|---|---|---|---|---|---|---|
| POTEET | Substation-Adjacent | TX | Atascosa County | 345 kV | 600 MW | 3.4 yrs | 66.5 |
| UNKNOWN310422 | Substation-Adjacent | TX | Live Oak County | 230 kV | 300 MW | 3.4 yrs | 66.2 |
| UNKNOWN304927 | Substation-Adjacent | TX | Atascosa County | 345 kV | 600 MW | 3.4 yrs | 66.1 |
| UNKNOWN300817 | Substation-Adjacent | TX | Atascosa County | 138 kV | 100 MW | 3.4 yrs | 65.3 |
| Greenfield (SAN MIGUEL - PAWNEE) | Greenfield | TX | Atascosa County | 345 kV | 600 MW | 3.4 yrs | 64.1 |
| Greenfield (SAN MIGUEL - PAWNEE) | Greenfield | TX | Atascosa County | 345 kV | 600 MW | 3.4 yrs | 63.5 |
| PLEASANTON | Substation-Adjacent | TX | Atascosa County | 138 kV | 100 MW | 3.4 yrs | 63.5 |
| Greenfield (PEARSALL POWER PLANT - POTEET) | Greenfield | TX | Atascosa County | 345 kV | 600 MW | 3.4 yrs | 63.4 |
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 SAN MIGUEL 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.