DILLEY SWITCHING
SubstationTexas · AEP TEXAS CENTRAL COMPANY
DILLEY SWITCHING is an electric transmission substation in Texas, operated by AEP TEXAS CENTRAL COMPANY. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #82797 | 138 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 2.1 mi |
| #85064 | 138 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 11.5 mi |
| #85708 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 21.8 mi |
| #87297 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 8.8 mi |
| #88142 | 138 kV | AEP TEXAS CENTRAL COMPANY | IN SERVICE | 46.3 mi |
| #88960 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 0.8 mi |
| #90302 | 138 kV | AEP TEXAS CENTRAL COMPANY | — | 15.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DILLEY SWITCHING, 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 |
|---|---|---|---|---|---|---|---|
| BIG FOOT | Substation-Adjacent | TX | Frio County | 345 kV | 600 MW | 3.4 yrs | 63.9 |
| PEARSALL POWER PLANT | Substation-Adjacent | TX | Frio County | 345 kV | 600 MW | 3.4 yrs | 62.4 |
| UNKNOWN306262 | Substation-Adjacent | TX | La Salle County | 138 kV | 100 MW | 3.4 yrs | 62.0 |
| Greenfield (UNKNOWN304927 - BIG FOOT) | Greenfield | TX | Frio County | 345 kV | 600 MW | 3.4 yrs | 60.8 |
| PEARSALL | Substation-Adjacent | TX | Frio County | 138 kV | 100 MW | 3.4 yrs | 59.3 |
| DERBY | Substation-Adjacent | TX | Frio County | 138 kV | 100 MW | 3.4 yrs | 58.9 |
| UNKNOWN306577 | Substation-Adjacent | TX | Frio County | 138 kV | 100 MW | 3.4 yrs | 58.8 |
| UNKNOWN307144 | Substation-Adjacent | TX | La Salle County | 138 kV | 100 MW | 3.4 yrs | 58.5 |
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 DILLEY SWITCHING 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.