STEWART
SubstationTexas · CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC
STEWART is an electric transmission substation in Texas, operated by CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC. It is classified as sub-transmission (138 kv) and connects 3 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 |
|---|---|---|---|---|
| #79822 | 138 kV | CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC | — | 3.3 mi |
| #88160 | 138 kV | CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC | IN SERVICE | 4.4 mi |
| #89377 | 138 kV | CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC | IN SERVICE | 14.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of STEWART, 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 |
|---|---|---|---|---|---|---|---|
| PH ROBINSON | Substation-Adjacent | TX | Galveston County | 345 kV | 600 MW | 3.4 yrs | 70.2 |
| TAP310677 | Substation-Adjacent | TX | Galveston County | 345 kV | 600 MW | 3.4 yrs | 68.2 |
| TAP302748 | Substation-Adjacent | TX | Brazoria County | 345 kV | 600 MW | 3.4 yrs | 68.1 |
| HALL | Substation-Adjacent | TX | Harris County | 138 kV | 100 MW | 3.4 yrs | 67.9 |
| UNKNOWN304001 | Substation-Adjacent | TX | Galveston County | 138 kV | 100 MW | 3.4 yrs | 67.4 |
| UNKNOWN304482 | Substation-Adjacent | TX | Harris County | 138 kV | 100 MW | 3.4 yrs | 67.2 |
| MARY'S CREEK | Substation-Adjacent | TX | Harris County | 138 kV | 100 MW | 3.4 yrs | 66.4 |
| UNKNOWN302940 | Substation-Adjacent | TX | Harris County | 138 kV | 100 MW | 3.4 yrs | 66.0 |
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 STEWART 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.