DUVALL SULPHUR
SubstationTexas · AEP TEXAS NORTH CO.
At a glance
DUVALL SULPHUR is an electric transmission substation in Texas, on AEP TEXAS NORTH CO.'s transmission network. It is classified as distribution (69–115 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 |
|---|---|---|---|---|
| #307936 | 69 kV | AEP TEXAS NORTH CO. | IN SERVICE | 9.5 mi |
| #308311 | 69 kV | — | IN SERVICE | 51.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DUVALL SULPHUR, 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 |
|---|---|---|---|---|---|---|---|
| NORTH MCCAMEY | Substation-Adjacent | TX | Upton County | 345 kV | 600 MW | 3.5 yrs | 62.0 |
| WAYMARK | Substation-Adjacent | TX | Upton County | 345 kV | 600 MW | 3.5 yrs | 58.4 |
| BAKERSFIELD | Substation-Adjacent | TX | Pecos County | 345 kV | 600 MW | 3.5 yrs | 58.1 |
| UNKNOWN304698 | Substation-Adjacent | TX | Upton County | 138 kV | 100 MW | 3.5 yrs | 56.1 |
| UNKNOWN303375 | Substation-Adjacent | TX | Upton County | 138 kV | 100 MW | 3.5 yrs | 55.7 |
| UNKNOWN309438 | Substation-Adjacent | TX | Upton County | 138 kV | 100 MW | 3.5 yrs | 55.6 |
| Greenfield (ODESSA 345 - None) | Greenfield | TX | Upton County | 345 kV | 600 MW | 3.5 yrs | 55.1 |
| UNKNOWN301040 | Substation-Adjacent | TX | Crane County | 138 kV | 100 MW | 3.5 yrs | 54.7 |
How does DUVALL SULPHUR compare with other substations in Texas?
Texas has 4,939 substation records in HIFLD, of which 1,426 carry a station name; the rest are unnamed tap points, risers and line ends. 165 named substations in the state are in DUVALL SULPHUR's 69–114 kV band (12% of named stations). 1,256 sit in a higher band. 200 named substations in Texas operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 138 kV.
Who owns the transmission lines at DUVALL SULPHUR?
The 2 connected lines listed above are owned by AEP TEXAS NORTH CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 61 miles.
How do candidate sites near DUVALL SULPHUR score?
The 8 highest-scoring candidate sites within about 25 miles range from 55 to 62 on the 0–100 DC Readiness scale. They fall in Upton County, Pecos County, Crane County. The Texas average across 6,839 scored sites is 56.4. 3,635 of those Texas sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is DUVALL SULPHUR substation?
DUVALL SULPHUR has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so DUVALL SULPHUR is below the national midpoint.
How many transmission lines connect to DUVALL SULPHUR substation?
2 transmission lines terminate at or pass through DUVALL SULPHUR in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 61 miles.
Who owns DUVALL SULPHUR substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at DUVALL SULPHUR belong to AEP TEXAS NORTH CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is DUVALL SULPHUR substation located?
DUVALL SULPHUR is in Texas at 31.0955, -102.5232. The datacenter candidate sites closest to it are in Upton County, Pecos County, Crane County.
Are there datacenter candidate sites near DUVALL SULPHUR substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of DUVALL SULPHUR. The highest-scoring is NORTH MCCAMEY at 62/100. Across Texas, the average DC Readiness score is 56.4.
Other 69 kV substations in Texas
- GREENS BAYOU 69· 9 lines
- ELGIN SWITCHING· 6 lines
- TAYLOR· 5 lines
- DEVINE· 4 lines
- DEVINE· 4 lines
- FISH CREEK 69· 4 lines
- FREEPORT· 4 lines
- LEACH· 4 lines
- All named substations in Texas· 1,426 stations
- Datacenter candidate sites in Texas· 6,839 sites
- Brownfield and retired plant sites in Texas
- Substations by state
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “DUVALL SULPHUR substation, Texas”, https://gridcensus.com/substations/texas/duvall-sulphur-c1172c5a (data as of June 29, 2026).
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
Every site and score for DUVALL SULPHUR substation, Texas is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.