SAREPTA
SubstationLouisiana · ENTERGY ARKANSAS INC
At a glance
SAREPTA is an electric transmission substation in Louisiana, on ENTERGY ARKANSAS INC's transmission network. It is classified as sub-transmission (115 kv) and connects 5 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 |
|---|---|---|---|---|
| #143735 | 345 kV | ENTERGY ARKANSAS INC | IN SERVICE | 57.7 mi |
| #141905 | 345 kV | — | IN SERVICE | 40.4 mi |
| #108436 | 115 kV | — | IN SERVICE | 21.9 mi |
| #138692 | 115 kV | — | IN SERVICE | 0.2 mi |
| #123633 | 115 kV | ENTERGY LOUISIANA LLC | IN SERVICE | 20.0 mi |
| #145418 | 115 kV | — | IN SERVICE | 6.6 mi |
| #127322 | — | — | IN SERVICE | 4.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SAREPTA, 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 |
|---|---|---|---|---|---|---|---|
| ARSENAL HILL | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 4.3 yrs | 61.4 |
| SAREPTA | Substation-Adjacent | LA | Webster Parish | 345 kV | 600 MW | 4.3 yrs | 60.9 |
| TAP141992 | Substation-Adjacent | LA | Caddo Parish | 138 kV | 100 MW | 4.3 yrs | 60.0 |
| DEEN POINT | Substation-Adjacent | LA | Bossier Parish | 138 kV | 100 MW | 4.3 yrs | 58.6 |
| UNKNOWN116792 | Substation-Adjacent | LA | Bossier Parish | 138 kV | 100 MW | 4.3 yrs | 58.4 |
| UNKNOWN116789 | Substation-Adjacent | LA | Bossier Parish | 138 kV | 100 MW | 4.3 yrs | 58.4 |
| UNKNOWN116790 | Substation-Adjacent | LA | Bossier Parish | 138 kV | 100 MW | 4.3 yrs | 58.2 |
| OZ Webster | Greenfield | LA | Webster | — | — | 4.3 yrs | 58.2 |
How does SAREPTA 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. 76 named substations in the state are in SAREPTA's 115–229 kV band (26% of named stations). 105 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 SAREPTA?
The 7 connected lines listed above are owned by ENTERGY ARKANSAS INC, ENTERGY LOUISIANA LLC. Line voltages range from 115 kV to 345 kV. Their combined recorded length is about 151.3 miles.
How do candidate sites near SAREPTA score?
The 8 highest-scoring candidate sites within about 25 miles range from 58 to 61 on the 0–100 DC Readiness scale. They fall in Caddo Parish, Webster Parish, Bossier Parish, Webster. 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 SAREPTA substation?
SAREPTA has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so SAREPTA is at the national midpoint.
How many transmission lines connect to SAREPTA substation?
5 transmission lines terminate at or pass through SAREPTA in the HIFLD line data. The connected lines listed here run at 345 kV, 115 kV. Together the listed lines cover about 151.3 miles.
Who owns SAREPTA substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at SAREPTA belong to ENTERGY ARKANSAS INC, and others to ENTERGY LOUISIANA LLC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is SAREPTA substation located?
SAREPTA is in Louisiana at 32.9099, -93.4488. The datacenter candidate sites closest to it are in Caddo Parish, Webster Parish, Bossier Parish.
Are there datacenter candidate sites near SAREPTA substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of SAREPTA. The highest-scoring is ARSENAL HILL at 61/100. Across Louisiana, the average DC Readiness score is 53.1.
Other 115 kV substations in Louisiana
- STERLINGTON· 15 lines
- BOGALUSA· 8 lines
- MONROE 115KV TIC· 5 lines
- ALLIANCE· 4 lines
- GENTILLY ROAD· 4 lines
- GRETNA· 4 lines
- STANDARD· 4 lines
- SWARTZ· 4 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, “SAREPTA substation, Louisiana”, https://gridcensus.com/substations/louisiana/sarepta-75b155f5 (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 SAREPTA 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.