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Gridcensus

ROTTERDAM

Substation

New York · NIAGARA MOHAWK POWER CORP.

Max voltage
230
kV

At a glance

ROTTERDAM is a 230 kV electric substation in New York on NIAGARA MOHAWK POWER CORP.'s transmission network, recorded in the HIFLD transmission dataset. 16 transmission lines connect to it. 56 of New York's 570 named substations operate in a higher voltage band. The highest-scoring datacenter candidate site within about 25 miles is UNKNOWN124337 in Albany County, with a DC Readiness score of 66/100.

ROTTERDAM is an electric transmission substation in New York, on NIAGARA MOHAWK POWER CORP.'s transmission network. It is classified as high-voltage (230 kv) and connects 16 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

Max voltage230 kV
Voltage classHigh-voltage (230 kV)
Connected lines16

Ownership

Line owner (most lines)NIAGARA MOHAWK POWER CORP.
StateNew York
Coordinates42.8289, -73.9973

Connected transmission lines

Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.

Line IDVoltageOwnerStatusLength
#104786230 kVNIAGARA MOHAWK POWER CORP.IN SERVICE71.8 mi
#104880230 kVNIAGARA MOHAWK POWER CORP.IN SERVICE72.2 mi
#166883230 kVNIAGARA MOHAWK POWER CORP.IN SERVICE23.6 mi
#106778115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE18.3 mi
#166583115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE17.5 mi
#106908115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE2.8 mi
#112607115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE2.5 mi
#115633115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE7.2 mi
#118161115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE13.2 mi
#129848115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE5.0 mi
#145398115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE3.7 mi
#145627115 kVNIAGARA MOHAWK POWER CORP.IN SERVICE0.6 mi

Browse the full transmission-line map →

Nearby datacenter candidate sites

Scored candidate sites within roughly 25 miles of ROTTERDAM, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.

Candidate sites near ROTTERDAM substation
SiteTypeStateCountyVoltageCapacityQueue waitScore
UNKNOWN124337Substation-AdjacentNYAlbany County345 kV600 MW4.3 yrs66.4
NEW SCOTLANDSubstation-AdjacentNYAlbany County345 kV600 MW4.3 yrs65.1
REYNOLDSSubstation-AdjacentNYRensselaer County345 kV600 MW4.3 yrs63.8
Troy Landfill Solar 2BrownfieldNYRensselaer—3 MW4.3 yrs63.7
ROTTERDAMSubstation-AdjacentNYSchenectady County230 kV300 MW4.3 yrs63.3
UNKNOWN124704Substation-AdjacentNYAlbany County115 kV100 MW4.3 yrs62.4
EASTOVERSubstation-AdjacentNYRensselaer County230 kV300 MW4.3 yrs61.5
OZ SchenectadyGreenfieldNYSchenectady——4.3 yrs60.6

How does ROTTERDAM compare with other substations in New York?

New York has 2,777 substation records in HIFLD, of which 570 carry a station name; the rest are unnamed tap points, risers and line ends. 26 named substations in the state are in ROTTERDAM's 230–344 kV band (5% of named stations). 56 sit in a higher band. 56 named substations in New York operate at 345 kV or above. The highest voltage recorded in the state is 765 kV, and the state median is 115 kV.

Who owns the transmission lines at ROTTERDAM?

The 12 connected lines listed above are owned by NIAGARA MOHAWK POWER CORP. Line voltages range from 115 kV to 230 kV. Their combined recorded length is about 238.4 miles.

How do candidate sites near ROTTERDAM score?

The 8 highest-scoring candidate sites within about 25 miles range from 61 to 66 on the 0–100 DC Readiness scale. They fall in Albany County, Rensselaer County, Rensselaer, Schenectady County. The New York average across 2,980 scored sites is 54. 844 of those New York sites are classed as substation sites (candidate locations generated at an existing substation).

Frequently asked questions

What voltage is ROTTERDAM substation?

ROTTERDAM 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 ROTTERDAM is above the national midpoint.

How many transmission lines connect to ROTTERDAM substation?

16 transmission lines terminate at or pass through ROTTERDAM in the HIFLD line data. The connected lines listed here run at 230 kV, 115 kV. Together the listed lines cover about 238.4 miles.

Who owns ROTTERDAM substation?

HIFLD does not publish substation owners directly. Most of the transmission lines that end at ROTTERDAM belong to NIAGARA MOHAWK POWER CORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.

Where is ROTTERDAM substation located?

ROTTERDAM is in New York at 42.8289, -73.9973. The datacenter candidate sites closest to it are in Albany County, Rensselaer County, Rensselaer.

Are there datacenter candidate sites near ROTTERDAM substation?

GridCensus lists at least 8 scored candidate sites within roughly 25 miles of ROTTERDAM. The highest-scoring is UNKNOWN124337 at 66/100. Across New York, the average DC Readiness score is 54.

Other 230 kV substations in New York

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, “ROTTERDAM substation, New York”, https://gridcensus.com/substations/new-york/rotterdam-47e2f4e0 (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 ROTTERDAM substation, New York 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.

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