TAP142954
SubstationLouisiana · ENTERGY LOUISIANA LLC
At a glance
TAP142954 is an electric transmission substation in Louisiana, on ENTERGY LOUISIANA LLC'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 |
|---|---|---|---|---|
| #106224 | — | ENTERGY LOUISIANA LLC | IN SERVICE | 3.6 mi |
| #107277 | — | ENTERGY LOUISIANA LLC | IN SERVICE | 9.5 mi |
| #115292 | — | ENTERGY LOUISIANA LLC | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP142954, 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 |
|---|---|---|---|---|---|---|---|
| COLY | Substation-Adjacent | LA | Livingston Parish | 500 kV | 1,000 MW | 4.3 yrs | 67.1 |
| WEINER | Substation-Adjacent | LA | East Baton Rouge Parish | 230 kV | 300 MW | 4.3 yrs | 63.4 |
| JONES CREEK | Substation-Adjacent | LA | East Baton Rouge Parish | 230 kV | 300 MW | 4.3 yrs | 63.4 |
| MC KNIGHT | Substation-Adjacent | LA | St. Helena Parish | 500 kV | 1,000 MW | 4.3 yrs | 63.1 |
| UNKNOWN112435 | Substation-Adjacent | LA | East Baton Rouge Parish | 230 kV | 300 MW | 4.3 yrs | 62.8 |
| UNKNOWN112438 | Substation-Adjacent | LA | East Baton Rouge Parish | 230 kV | 300 MW | 4.3 yrs | 62.4 |
| UNKNOWN112533 | Substation-Adjacent | LA | Livingston Parish | 230 kV | 300 MW | 4.3 yrs | 59.2 |
| UNKNOWN112442 | Substation-Adjacent | LA | Tangipahoa Parish | 230 kV | 300 MW | 4.3 yrs | 58.8 |
Who owns the transmission lines at TAP142954?
The 3 connected lines listed above are owned by ENTERGY LOUISIANA LLC. Their combined recorded length is about 13.1 miles.
How do candidate sites near TAP142954 score?
The 8 highest-scoring candidate sites within about 25 miles range from 59 to 67 on the 0–100 DC Readiness scale. They fall in Livingston Parish, East Baton Rouge Parish, St. Helena Parish, Tangipahoa Parish. The Louisiana average across 1,762 scored sites is 53.1. 615 of those Louisiana sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP142954 substation?
3 transmission lines terminate at or pass through TAP142954 in the HIFLD line data. Together the listed lines cover about 13.1 miles.
Who owns TAP142954 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP142954 belong to ENTERGY LOUISIANA LLC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP142954 substation located?
TAP142954 is in Louisiana at 30.7940, -90.6514. The datacenter candidate sites closest to it are in Livingston Parish, East Baton Rouge Parish, St. Helena Parish.
Are there datacenter candidate sites near TAP142954 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP142954. The highest-scoring is COLY at 67/100. Across Louisiana, the average DC Readiness score is 53.1.
More in Louisiana
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, “TAP142954 substation, Louisiana”, https://gridcensus.com/substations/louisiana/tap142954-c5a34fe8 (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 TAP142954 substation, Louisiana 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.