ROUND ROCK NORTHEAST
SubstationTexas · ONCOR ELECTRIC DELIVERY CO.
At a glance
ROUND ROCK NORTHEAST is an electric transmission substation in Texas, on ONCOR ELECTRIC DELIVERY CO.'s transmission network. It is classified as high-voltage (345 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #303672 | 345 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 5.3 mi |
| #310038 | 345 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 5.3 mi |
| #308252 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 3.2 mi |
| #311499 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 3.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ROUND ROCK NORTHEAST, 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 |
|---|---|---|---|---|---|---|---|
| DECKER | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 70.0 |
| UNKNOWN304304 | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 68.5 |
| DESSAU | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 68.3 |
| Grove Landfill | Brownfield | TX | Travis | 138 kV | — | 3.5 yrs | 67.7 |
| DUNLAP | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 67.6 |
| ROUND ROCK NORTHEAST | Substation-Adjacent | TX | Williamson County | 345 kV | 600 MW | 3.5 yrs | 67.5 |
| AUSTROP | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 67.3 |
| EC Near Domain Integrated Energy System | Greenfield | TX | Travis | — | — | 3.5 yrs | 67.2 |
How does ROUND ROCK NORTHEAST 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. 198 named substations in the state are in ROUND ROCK NORTHEAST's 345–499 kV band (14% of named stations). 2 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 ROUND ROCK NORTHEAST?
The 4 connected lines listed above are owned by ONCOR ELECTRIC DELIVERY CO. Line voltages range from 138 kV to 345 kV. Their combined recorded length is about 17.4 miles.
How do candidate sites near ROUND ROCK NORTHEAST score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 70 on the 0–100 DC Readiness scale. They fall in Travis County, Travis, Williamson 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 ROUND ROCK NORTHEAST substation?
ROUND ROCK NORTHEAST has a maximum voltage of 345 kV and a minimum of 69 kV. That places it in the 345–499 kV band. The median named US substation in this dataset is 115 kV, so ROUND ROCK NORTHEAST is above the national midpoint.
How many transmission lines connect to ROUND ROCK NORTHEAST substation?
4 transmission lines terminate at or pass through ROUND ROCK NORTHEAST in the HIFLD line data. The connected lines listed here run at 345 kV, 138 kV. Together the listed lines cover about 17.4 miles.
Who owns ROUND ROCK NORTHEAST substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at ROUND ROCK NORTHEAST belong to ONCOR ELECTRIC DELIVERY CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is ROUND ROCK NORTHEAST substation located?
ROUND ROCK NORTHEAST is in Texas at 30.5415, -97.6489. The datacenter candidate sites closest to it are in Travis County, Travis, Williamson County.
Are there datacenter candidate sites near ROUND ROCK NORTHEAST substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of ROUND ROCK NORTHEAST. The highest-scoring is DECKER at 70/100. Across Texas, the average DC Readiness score is 56.4.
Other 345 kV substations in Texas
- GREENS BAYOU 345· 21 lines
- ROYSE· 17 lines
- CEDAR BAYOU PLANT· 16 lines
- PH ROBINSON· 16 lines
- VENUS· 16 lines
- SKYLINE· 15 lines
- SOTEX5· 15 lines
- PARISH· 14 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, “ROUND ROCK NORTHEAST substation, Texas”, https://gridcensus.com/substations/texas/round-rock-northeast-102de8d2 (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 ROUND ROCK NORTHEAST 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.