CALCASIEU
SubstationLouisiana · ENTERGY LOUISIANA LLC
CALCASIEU is an electric transmission substation in Louisiana, operated by ENTERGY LOUISIANA LLC. It is classified as high-voltage (230 kv) and connects 4 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 |
|---|---|---|---|---|
| #61649 | 230 kV | ENTERGY LOUISIANA LLC | IN SERVICE | 4.0 mi |
| #64379 | 230 kV | ENTERGY LOUISIANA LLC | — | 0.1 mi |
| #4570 | 138 kV | ENTERGY LOUISIANA LLC | IN SERVICE | 1.8 mi |
| #61645 | 138 kV | ENTERGY LOUISIANA LLC | IN SERVICE | 1.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of CALCASIEU, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN173167 | Substation-Adjacent | LA | Calcasieu Parish | 500 kV | 1,000 MW | 1.4 yrs | 72.6 |
| UNKNOWN173166 | Substation-Adjacent | LA | Calcasieu Parish | 500 kV | 1,000 MW | 1.4 yrs | 71.3 |
| HARTBURG | Substation-Adjacent | TX | Orange County | 500 kV | 1,000 MW | 3.4 yrs | 68.9 |
| CALCASIEU | Substation-Adjacent | LA | Calcasieu Parish | 230 kV | 300 MW | 1.4 yrs | 67.0 |
| UNKNOWN116398 | Substation-Adjacent | LA | Calcasieu Parish | 230 kV | 300 MW | 1.4 yrs | 66.4 |
| MOSS BLUFF | Substation-Adjacent | LA | Calcasieu Parish | 230 kV | 300 MW | 1.4 yrs | 66.3 |
| Greenfield (NELSON - RICHARD) | Greenfield | LA | Jefferson Davis Parish | 500 kV | 1,000 MW | 1.4 yrs | 65.4 |
| UNKNOWN116325 | Substation-Adjacent | LA | Calcasieu Parish | 230 kV | 300 MW | 1.4 yrs | 64.7 |
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
This page shows a public slice of the GridCensus dataset for CALCASIEU substation, Louisiana. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.