SAM DAM
SubstationTexas · DEEP EAST TEXAS ELEC COOP INC
SAM DAM is an electric transmission substation in Texas, operated by DEEP EAST TEXAS ELEC COOP INC. It is classified as sub-transmission (138 kv) and connects 6 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 |
|---|---|---|---|---|
| #84165 | 138 kV | SAM HOUSTON ELECTRIC COOP INC | — | 19.9 mi |
| #86191 | 138 kV | DEEP EAST TEXAS ELEC COOP INC | IN SERVICE | 0.1 mi |
| #86321 | 138 kV | DEEP EAST TEXAS ELEC COOP INC | IN SERVICE | 4.6 mi |
| #88099 | 138 kV | SAM HOUSTON ELECTRIC COOP INC | — | 19.9 mi |
| #92381 | 138 kV | DEEP EAST TEXAS ELEC COOP INC | IN SERVICE | 13.6 mi |
| #92759 | 138 kV | DEEP EAST TEXAS ELEC COOP INC | IN SERVICE | 13.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SAM DAM, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN303664 | Substation-Adjacent | TX | Sabine County | 138 kV | 100 MW | 3.4 yrs | 63.2 |
| SAM DAM | Substation-Adjacent | TX | Jasper County | 138 kV | 100 MW | 3.4 yrs | 63.2 |
| UNKNOWN302189 | Substation-Adjacent | TX | Sabine County | 138 kV | 100 MW | 3.4 yrs | 62.4 |
| UNKNOWN308458 | Substation-Adjacent | TX | Sabine County | 138 kV | 100 MW | 3.4 yrs | 62.3 |
| UNKNOWN305966 | Substation-Adjacent | TX | Tyler County | 138 kV | 100 MW | 3.4 yrs | 62.3 |
| UNKNOWN307120 | Substation-Adjacent | TX | Jasper County | 138 kV | 100 MW | 3.4 yrs | 62.2 |
| JASPER | Substation-Adjacent | TX | Jasper County | 138 kV | 100 MW | 3.4 yrs | 62.0 |
| UNKNOWN302323 | Substation-Adjacent | TX | Jasper County | 138 kV | 100 MW | 3.4 yrs | 61.4 |
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 SAM DAM 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.