TAP310677
SubstationTexas · CENTERPOINT ENERGY
At a glance
TAP310677 is an electric transmission substation in Texas, on CENTERPOINT ENERGY's transmission network. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #303943 | 345 kV | CENTERPOINT ENERGY | IN SERVICE | 22.3 mi |
| #302644 | 138 kV | CENTERPOINT ENERGY | IN SERVICE | 4.5 mi |
| #309086 | 138 kV | CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC | IN SERVICE | 0.0 mi |
| #309478 | 138 kV | CENTERPOINT ENERGY | IN SERVICE | 9.9 mi |
| #310498 | 138 kV | CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC | IN SERVICE | 0.0 mi |
| #310963 | 138 kV | CENTERPOINT ENERGY | — | 8.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP310677, 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 |
|---|---|---|---|---|---|---|---|
| Deer Park Plant | Brownfield | TX | Harris County | 138 kV | 111 MW | 3.5 yrs | 67.7 |
| BELLAIRE | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.5 yrs | 66.3 |
| OASIS | Substation-Adjacent | TX | Brazoria County | 345 kV | 600 MW | 3.5 yrs | 66.1 |
| MEADOW | Substation-Adjacent | TX | Brazoria County | 345 kV | 600 MW | 3.5 yrs | 66.0 |
| HARRISBURG | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.5 yrs | 64.9 |
| DEEPWATER | Substation-Adjacent | TX | Harris County | 345 kV | 600 MW | 3.5 yrs | 64.7 |
| PH ROBINSON | Substation-Adjacent | TX | Galveston County | 345 kV | 600 MW | 3.5 yrs | 64.6 |
| UNKNOWN310907 | Substation-Adjacent | TX | Chambers County | 345 kV | 600 MW | 3.5 yrs | 64.5 |
Who owns the transmission lines at TAP310677?
The 6 connected lines listed above are owned by CENTERPOINT ENERGY, CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC. Line voltages range from 138 kV to 345 kV. Their combined recorded length is about 44.8 miles.
How do candidate sites near TAP310677 score?
The 8 highest-scoring candidate sites within about 25 miles range from 65 to 68 on the 0–100 DC Readiness scale. They fall in Harris County, Brazoria County, Galveston County, Chambers 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 TAP310677 substation?
TAP310677 has a maximum voltage of 138 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP310677 is above the national midpoint.
How many transmission lines connect to TAP310677 substation?
3 transmission lines terminate at or pass through TAP310677 in the HIFLD line data. The connected lines listed here run at 345 kV, 138 kV. Together the listed lines cover about 44.8 miles.
Who owns TAP310677 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP310677 belong to CENTERPOINT ENERGY, and others to CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP310677 substation located?
TAP310677 is in Texas at 29.3923, -95.0906. The datacenter candidate sites closest to it are in Harris County, Brazoria County, Galveston County.
Are there datacenter candidate sites near TAP310677 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP310677. The highest-scoring is Deer Park Plant at 68/100. 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, “TAP310677 substation, Texas”, https://gridcensus.com/substations/texas/tap310677-1a881a1a (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 TAP310677 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.