TAP142761
SubstationMississippi · ENTERGY MISSISSIPPI INC
At a glance
TAP142761 is an electric transmission substation in Mississippi, on ENTERGY MISSISSIPPI INC'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
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 |
|---|---|---|---|---|
| #117313 | 69 kV | — | IN SERVICE | 13.9 mi |
| #145820 | 69 kV | MISSISSIPPI POWER CO | IN SERVICE | 5.4 mi |
| #150311 | 69 kV | ENTERGY MISSISSIPPI INC | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP142761, 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 |
|---|---|---|---|---|---|---|---|
| OZ Marion | Greenfield | MS | Marion | — | — | 3.9 yrs | 60.2 |
| OZ Marion | Greenfield | MS | Marion | — | — | 3.9 yrs | 59.6 |
| UNKNOWN109809 | Substation-Adjacent | MS | Marion County | 161 kV | 100 MW | 3.9 yrs | 57.8 |
| UNKNOWN109926 | Substation-Adjacent | MS | Marion County | 115 kV | 100 MW | 3.9 yrs | 57.4 |
| TAP143080 | Substation-Adjacent | MS | Marion County | 115 kV | 100 MW | 3.9 yrs | 57.0 |
| UNKNOWN109932 | Substation-Adjacent | MS | Lamar County | 115 kV | 100 MW | 3.9 yrs | 56.4 |
| UNKNOWN109808 | Substation-Adjacent | MS | Lamar County | 115 kV | 100 MW | 3.9 yrs | 56.4 |
| UNKNOWN110827 | Substation-Adjacent | MS | Walthall County | 115 kV | 100 MW | 4.3 yrs | 56.0 |
Who owns the transmission lines at TAP142761?
The 3 connected lines listed above are owned by MISSISSIPPI POWER CO, ENTERGY MISSISSIPPI INC. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 19.3 miles.
How do candidate sites near TAP142761 score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 60 on the 0–100 DC Readiness scale. They fall in Marion, Marion County, Lamar County, Walthall County. The Mississippi average across 3,104 scored sites is 53. 694 of those Mississippi sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP142761 substation?
3 transmission lines terminate at or pass through TAP142761 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 19.3 miles.
Who owns TAP142761 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP142761 belong to ENTERGY MISSISSIPPI INC, and others to MISSISSIPPI POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP142761 substation located?
TAP142761 is in Mississippi at 31.4576, -89.9661. The datacenter candidate sites closest to it are in Marion, Marion County, Lamar County.
Are there datacenter candidate sites near TAP142761 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP142761. The highest-scoring is OZ Marion at 60/100. Across Mississippi, the average DC Readiness score is 53.
More in Mississippi
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, “TAP142761 substation, Mississippi”, https://gridcensus.com/substations/mississippi/tap142761-8fa24e33 (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 TAP142761 substation, Mississippi 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.