EL MAR
SubstationTexas · ONCOR ELECTRIC DELIVERY CO.
EL MAR is an electric transmission substation in Texas, operated by ONCOR ELECTRIC DELIVERY 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #80824 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | — | 12.6 mi |
| #89335 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | — | 11.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of EL MAR, 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 |
|---|---|---|---|---|---|---|---|
| PECOS | Substation-Adjacent | TX | Reeves County | 138 kV | 100 MW | 3.4 yrs | 63.9 |
| UNKNOWN301350 | Substation-Adjacent | TX | Reeves County | 138 kV | 100 MW | 3.4 yrs | 62.5 |
| EL MAR | Substation-Adjacent | TX | Loving County | 138 kV | 100 MW | 3.4 yrs | 60.9 |
| TAP315848 | Substation-Adjacent | TX | Loving County | 138 kV | 100 MW | 3.4 yrs | 60.7 |
| LOVING | Substation-Adjacent | TX | Loving County | 138 kV | 100 MW | 3.4 yrs | 59.7 |
| Greenfield (EL MAR - LOVING) | Greenfield | TX | Loving County | 138 kV | 100 MW | 3.4 yrs | 54.9 |
| ONCOR MASON | Substation-Adjacent | TX | Loving County | 138 kV | 100 MW | 3.4 yrs | 54.7 |
| OZ Eddy | Greenfield | NM | Eddy | — | — | 3.5 yrs | 54.4 |
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 EL MAR 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.