TAP302777
SubstationTexas · ONCOR ELECTRIC DELIVERY CO.
At a glance
TAP302777 is an electric transmission substation in Texas, on ONCOR ELECTRIC DELIVERY CO.'s transmission network. It is classified as unclassified 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #300502 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 5.0 mi |
| #300503 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 0.3 mi |
| #301768 | 138 kV | ONCOR ELECTRIC DELIVERY CO. | IN SERVICE | 6.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP302777, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN300728 | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.8 |
| EVERMAN | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.4 |
| BENBROOK | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.4 |
| UNKNOWN304568 | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.4 |
| UNKNOWN302319 | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.3 |
| UNKNOWN301121 | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 68.0 |
| EC FFE Tarrant County | Greenfield | TX | Tarrant County | — | — | 3.5 yrs | 67.7 |
| OZ Tarrant | Greenfield | TX | Tarrant | — | — | 3.5 yrs | 67.4 |
Who owns the transmission lines at TAP302777?
The 3 connected lines listed above are owned by ONCOR ELECTRIC DELIVERY CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 12.3 miles.
How do candidate sites near TAP302777 score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 69 on the 0–100 DC Readiness scale. They fall in Tarrant County, Tarrant. 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
How many transmission lines connect to TAP302777 substation?
3 transmission lines terminate at or pass through TAP302777 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 12.3 miles.
Who owns TAP302777 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP302777 belong to ONCOR ELECTRIC DELIVERY CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP302777 substation located?
TAP302777 is in Texas at 32.4175, -97.5624. The datacenter candidate sites closest to it are in Tarrant County, Tarrant.
Are there datacenter candidate sites near TAP302777 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP302777. The highest-scoring is UNKNOWN300728 at 69/100. Across Texas, the average DC Readiness score is 56.4.
More in Texas
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, “TAP302777 substation, Texas”, https://gridcensus.com/substations/texas/tap302777-ae887861 (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 TAP302777 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.