NINEMILE POINT
SubstationLouisiana · ENTERGY LOUISIANA INC
At a glance
NINEMILE POINT is an electric transmission substation in Louisiana, on ENTERGY LOUISIANA INC's transmission network. It is classified as high-voltage (230 kv) and connects 14 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 |
|---|---|---|---|---|
| #168211 | 230 kV | — | IN SERVICE | 1.1 mi |
| #130400 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 10.6 mi |
| #135369 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 1.3 mi |
| #144951 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 0.1 mi |
| #112210 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 8.4 mi |
| #112255 | 230 kV | — | IN SERVICE | 5.0 mi |
| #116548 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 3.0 mi |
| #120205 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 10.2 mi |
| #121004 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 1.3 mi |
| #121028 | 230 kV | ENTERGY LOUISIANA INC | IN SERVICE | 31.1 mi |
| #122800 | 230 kV | ENTERGY LOUISIANA INC | — | 0.1 mi |
| #111406 | 115 kV | ENTERGY LOUISIANA INC | IN SERVICE | 5.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NINEMILE POINT, 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 |
|---|---|---|---|---|---|---|---|
| MICHOUD STATION | Substation-Adjacent | LA | Orleans Parish | 230 kV | 300 MW | 4.3 yrs | 66.5 |
| UNKNOWN112635 | Substation-Adjacent | LA | St. Charles Parish | 230 kV | 300 MW | 4.3 yrs | 66.1 |
| WATERFORD 500KV | Substation-Adjacent | LA | St. Charles Parish | 500 kV | 1,000 MW | 4.3 yrs | 65.0 |
| DELTA | Substation-Adjacent | LA | Orleans Parish | 230 kV | 300 MW | 4.3 yrs | 64.2 |
| UNKNOWN112611 | Substation-Adjacent | LA | St. Charles Parish | 230 kV | 300 MW | 4.3 yrs | 64.2 |
| UNKNOWN112652 | Substation-Adjacent | LA | Orleans Parish | 230 kV | 300 MW | 4.3 yrs | 64.2 |
| DERBIGNY | Substation-Adjacent | LA | Orleans Parish | 230 kV | 300 MW | 4.3 yrs | 64.1 |
| UNKNOWN113056 | Substation-Adjacent | LA | Orleans Parish | 230 kV | 300 MW | 4.3 yrs | 64.1 |
How does NINEMILE POINT compare with other substations in Louisiana?
Louisiana has 1,305 substation records in HIFLD, of which 297 carry a station name; the rest are unnamed tap points, risers and line ends. 88 named substations in the state are in NINEMILE POINT's 230–344 kV band (30% of named stations). 17 sit in a higher band. 17 named substations in Louisiana operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 138 kV.
Who owns the transmission lines at NINEMILE POINT?
The 12 connected lines listed above are owned by ENTERGY LOUISIANA INC. Line voltages range from 115 kV to 230 kV. Their combined recorded length is about 77.7 miles.
How do candidate sites near NINEMILE POINT score?
The 8 highest-scoring candidate sites within about 25 miles range from 64 to 67 on the 0–100 DC Readiness scale. They fall in Orleans Parish, St. Charles 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
What voltage is NINEMILE POINT substation?
NINEMILE POINT has a maximum voltage of 230 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so NINEMILE POINT is above the national midpoint.
How many transmission lines connect to NINEMILE POINT substation?
14 transmission lines terminate at or pass through NINEMILE POINT in the HIFLD line data. The connected lines listed here run at 230 kV, 115 kV. Together the listed lines cover about 77.7 miles.
Who owns NINEMILE POINT substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at NINEMILE POINT belong to ENTERGY LOUISIANA INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is NINEMILE POINT substation located?
NINEMILE POINT is in Louisiana at 29.9470, -90.1477. The datacenter candidate sites closest to it are in Orleans Parish, St. Charles Parish.
Are there datacenter candidate sites near NINEMILE POINT substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of NINEMILE POINT. The highest-scoring is MICHOUD STATION at 67/100. Across Louisiana, the average DC Readiness score is 53.1.
Other 230 kV substations in Louisiana
- WATERFORD 230KV· 17 lines
- CARLYSS· 15 lines
- WILLOW GLEN (230KV)· 14 lines
- WILLOW GLEN (500KV)· 14 lines
- LITTLE GYPSY STATION· 12 lines
- ADDIS· 10 lines
- HARELSON· 9 lines
- MICHOUD STATION· 9 lines
- All named substations in Louisiana· 297 stations
- Datacenter candidate sites in Louisiana· 1,762 sites
- Brownfield and retired plant sites in Louisiana
- Substations by state
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, “NINEMILE POINT substation, Louisiana”, https://gridcensus.com/substations/louisiana/ninemile-point-201f83e7 (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 NINEMILE POINT 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.