NORWALK HARBOR
SubstationNew York · LONG ISLAND POWER AUTHORITY
NORWALK HARBOR is an electric transmission substation in New York, operated by LONG ISLAND POWER AUTHORITY. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #10657 | 115 kV | — | IN SERVICE | 5.5 mi |
| #10658 | 115 kV | — | IN SERVICE | 1.1 mi |
| #10660 | 115 kV | — | IN SERVICE | 1.0 mi |
| #11260 | 115 kV | LONG ISLAND POWER AUTHORITY | IN SERVICE | 11.8 mi |
| #61458 | 115 kV | — | IN SERVICE | 0.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NORWALK HARBOR, 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 |
| DUNWOODIE | Substation-Adjacent | NY | Bronx County | 345 kV | 600 MW | 3.5 yrs | 71.4 |
| UNKNOWN129188 | Substation-Adjacent | NY | Westchester County | 345 kV | 600 MW | 3.5 yrs | 71.1 |
| BRIDGEPORT RESCO | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 345 kV | 600 MW | 3.5 yrs | 69.7 |
| WOOD STREET | Substation-Adjacent | NY | Putnam County | 345 kV | 600 MW | 3.5 yrs | 68.7 |
| MILLWOOD | Substation-Adjacent | NY | Westchester County | 345 kV | 600 MW | 3.5 yrs | 68.4 |
| PLEASENTVILLE | Substation-Adjacent | NY | Westchester County | 345 kV | 600 MW | 3.5 yrs | 67.6 |
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 NORWALK HARBOR 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.