MARTIN SWITCHING STATION
SubstationTexas · SOUTHWESTERN PUBLIC SERVICE CO.
At a glance
MARTIN SWITCHING STATION is an electric transmission substation in Texas, on SOUTHWESTERN PUBLIC SERVICE CO.'s transmission network. It is classified as high-voltage (230 kv) and connects 4 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #302177 | 230 kV | SOUTHWESTERN PUBLIC SERVICE CO. | — | 0.4 mi |
| #303847 | 115 kV | SOUTHWESTERN PUBLIC SERVICE CO. | IN SERVICE | 5.3 mi |
| #305516 | 115 kV | SOUTHWESTERN PUBLIC SERVICE CO. | IN SERVICE | 8.0 mi |
| #308916 | 115 kV | SOUTHWESTERN PUBLIC SERVICE CO. | IN SERVICE | 1.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MARTIN SWITCHING STATION, 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 |
|---|---|---|---|---|---|---|---|
| POTTER COUNTY | Substation-Adjacent | TX | Potter County | 345 kV | 600 MW | 3.5 yrs | 66.2 |
| ROLLING HILLS | Substation-Adjacent | TX | Potter County | 230 kV | 300 MW | 3.5 yrs | 64.6 |
| RANDALL COUNTY | Substation-Adjacent | TX | Randall County | 230 kV | 300 MW | 3.5 yrs | 64.6 |
| HARRINGTON | Substation-Adjacent | TX | Potter County | 230 kV | 300 MW | 3.5 yrs | 64.6 |
| AMARILLO SOUTH | Substation-Adjacent | TX | Randall County | 230 kV | 300 MW | 3.5 yrs | 64.6 |
| NICHOLS | Substation-Adjacent | TX | Potter County | 230 kV | 300 MW | 3.5 yrs | 64.6 |
| NORTHWEST | Substation-Adjacent | TX | Potter County | 230 kV | 300 MW | 3.5 yrs | 64.5 |
| ALIBATES | Substation-Adjacent | TX | Carson County | 345 kV | 600 MW | 3.5 yrs | 62.6 |
How does MARTIN SWITCHING STATION 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. 36 named substations in the state are in MARTIN SWITCHING STATION's 230–344 kV band (3% of named stations). 200 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 MARTIN SWITCHING STATION?
The 4 connected lines listed above are owned by SOUTHWESTERN PUBLIC SERVICE CO. Line voltages range from 115 kV to 230 kV. Their combined recorded length is about 15.1 miles.
How do candidate sites near MARTIN SWITCHING STATION score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 66 on the 0–100 DC Readiness scale. They fall in Potter County, Randall County, Carson 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 MARTIN SWITCHING STATION substation?
MARTIN SWITCHING STATION has a maximum voltage of 230 kV and a minimum of 69 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so MARTIN SWITCHING STATION is above the national midpoint.
How many transmission lines connect to MARTIN SWITCHING STATION substation?
4 transmission lines terminate at or pass through MARTIN SWITCHING STATION in the HIFLD line data. The connected lines listed here run at 230 kV, 115 kV. Together the listed lines cover about 15.1 miles.
Who owns MARTIN SWITCHING STATION substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at MARTIN SWITCHING STATION belong to SOUTHWESTERN PUBLIC SERVICE CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is MARTIN SWITCHING STATION substation located?
MARTIN SWITCHING STATION is in Texas at 35.3821, -101.5394. The datacenter candidate sites closest to it are in Potter County, Randall County, Carson County.
Are there datacenter candidate sites near MARTIN SWITCHING STATION substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of MARTIN SWITCHING STATION. The highest-scoring is POTTER COUNTY at 66/100. Across Texas, the average DC Readiness score is 56.4.
Other 230 kV substations in Texas
- NICHOLS· 14 lines
- PLANT X· 11 lines
- MOORE COUNTY· 10 lines
- HARRINGTON· 9 lines
- PORT ACRES BULK· 9 lines
- HUTCHINSON COUNTY· 8 lines
- KOLBS· 8 lines
- MUSTANG· 8 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, “MARTIN SWITCHING STATION substation, Texas”, https://gridcensus.com/substations/texas/martin-switching-station-c39d34b5 (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 MARTIN SWITCHING STATION 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.