NORTHPORT
SubstationNew York · LONG ISLAND POWER AUTHORITY
NORTHPORT is an electric transmission substation in New York, operated by LONG ISLAND POWER AUTHORITY. It is classified as sub-transmission (138 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #33958 | 138 kV | LONG ISLAND POWER AUTHORITY | — | 0.1 mi |
| #38209 | 138 kV | LONG ISLAND POWER AUTHORITY | — | 0.2 mi |
| #64705 | 138 kV | LONG ISLAND POWER AUTHORITY | — | 0.1 mi |
| #64706 | 138 kV | LONG ISLAND POWER AUTHORITY | — | 0.2 mi |
| #11260 | 115 kV | LONG ISLAND POWER AUTHORITY | IN SERVICE | 11.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NORTHPORT, 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 |
|---|---|---|---|---|---|---|---|
| NEWBRIDGE ROAD | Substation-Adjacent | NY | Nassau County | 345 kV | 600 MW | 3.5 yrs | 72.6 |
| EAST GARDEN CITY | Substation-Adjacent | NY | Nassau County | 345 kV | 600 MW | 3.5 yrs | 72.0 |
| BRIDGEPORT RESCO | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 345 kV | 600 MW | 3.5 yrs | 69.7 |
| SOUTH END | Substation-Adjacent | NY | Westchester County | 115 kV | 100 MW | 3.5 yrs | 67.4 |
| TAP140045 | Substation-Adjacent | NY | Westchester County | 115 kV | 100 MW | 3.5 yrs | 67.4 |
| BRIDGEPORT HARBOR | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 345 kV | 600 MW | 3.5 yrs | 66.8 |
| COS COB | Substation-Adjacent | NY | Westchester County | 115 kV | 100 MW | 3.5 yrs | 66.7 |
| Greenfield (DUFFY AVENUE CONVERTER STATION) | Greenfield | NY | Nassau County | 500 kV | 1,000 MW | 3.5 yrs | 66.2 |
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 NORTHPORT substation, New York. 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.