NAPOLEONVILLE
SubstationLouisiana · ENTERGY LOUISIANA INC
At a glance
NAPOLEONVILLE is an electric transmission substation in Louisiana, on ENTERGY LOUISIANA INC's transmission network. It is classified as unclassified and connects 2 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 |
|---|---|---|---|---|
| #146153 | — | ENTERGY LOUISIANA INC | IN SERVICE | 17.1 mi |
| #146572 | — | ENTERGY LOUISIANA INC | IN SERVICE | 5.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NAPOLEONVILLE, 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 |
|---|---|---|---|---|---|---|---|
| WILLOW GLEN (500KV) | Substation-Adjacent | LA | Ascension Parish | 500 kV | 1,000 MW | 4.3 yrs | 71.9 |
| UNKNOWN149836 | Substation-Adjacent | LA | Iberville Parish | 500 kV | 1,000 MW | 4.3 yrs | 66.5 |
| UNKNOWN115491 | Substation-Adjacent | LA | Ascension Parish | 230 kV | 300 MW | 4.3 yrs | 63.4 |
| UNKNOWN115481 | Substation-Adjacent | LA | Ascension Parish | 230 kV | 300 MW | 4.3 yrs | 63.4 |
| UNKNOWN112514 | Substation-Adjacent | LA | Ascension Parish | 230 kV | 300 MW | 4.3 yrs | 63.3 |
| UNKNOWN112489 | Substation-Adjacent | LA | Iberville Parish | 230 kV | 300 MW | 4.3 yrs | 63.3 |
| UNKNOWN111923 | Substation-Adjacent | LA | Ascension Parish | 230 kV | 300 MW | 4.3 yrs | 63.2 |
| UNKNOWN115492 | Substation-Adjacent | LA | West Baton Rouge Parish | 230 kV | 300 MW | 4.3 yrs | 63.2 |
Who owns the transmission lines at NAPOLEONVILLE?
The 2 connected lines listed above are owned by ENTERGY LOUISIANA INC. Their combined recorded length is about 22.6 miles.
How do candidate sites near NAPOLEONVILLE score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 72 on the 0–100 DC Readiness scale. They fall in Ascension Parish, Iberville Parish, West Baton Rouge 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 NAPOLEONVILLE substation?
2 transmission lines terminate at or pass through NAPOLEONVILLE in the HIFLD line data. Together the listed lines cover about 22.6 miles.
Who owns NAPOLEONVILLE substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at NAPOLEONVILLE belong to ENTERGY LOUISIANA INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is NAPOLEONVILLE substation located?
NAPOLEONVILLE is in Louisiana at 29.9467, -91.0305. The datacenter candidate sites closest to it are in Ascension Parish, Iberville Parish, West Baton Rouge Parish.
Are there datacenter candidate sites near NAPOLEONVILLE substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of NAPOLEONVILLE. The highest-scoring is WILLOW GLEN (500KV) at 72/100. 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, “NAPOLEONVILLE substation, Louisiana”, https://gridcensus.com/substations/louisiana/napoleonville-ab838966 (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 NAPOLEONVILLE 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.