Greenfield (DUFFY AVENUE CONVERTER STATION)

Greenfield

Nassau County, New York · NYISO

DC Readiness
66.2
Good / 100

Greenfield (DUFFY AVENUE CONVERTER STATION) is a greenfield datacenter candidate site in Nassau County, New York, interconnecting through NYISO. It screens at 66.2/100 DC Readiness with a catalogued 1,000 MW of candidate capacity and a 3.5 yrs average interconnection-queue wait.

Power & interconnection

Nearest substationDUFFY AVENUE CONVERTER STATION
Substation voltage500 kV
Available capacity1,000 MW
LMP zoneNYISO_LONGIL
Wholesale LMP$61.69/MWh
Utility commercial rate0.15¢/kWh

Speed to power

ISO / RTO regionNYISO
Queue depth426
Avg queue wait3.5 yrs
Recent queue wait3.5 yrs
Completion rate8%
Withdrawal rate92%

Connectivity

Nearest IXP1101 Stewart Ave, Garden City
IXP distance7.1 mi
Fiber providers12
Fiber coverage100.0%
Nearest cloud providerAWS
Nearest cloud regionus-east-1
Cloud region distance238.5 mi

Site characteristics

Site typeGreenfield
Parcel ownerLONG ISLAND POWER AUTHORITY
Land owner typeprivate
Buildability95.0/100
Land cover (NLCD)Developed, Medium Intensity

Risk & environment

Flood zoneZone AE (SFHA)
Water stress (WRI)0.50
Wetlands (NWI)Clear
Critical habitatClear
Superfund nearbyPresent
Superfund siteNASSAU COUNTY CEDAR CREEK WATER POLLUTION CONTROL PLANT
Hazard sub-score40/100
Construction cost index115.9 (avg 100)

Location context

Nearest datacenter1101 Stewart Ave, Garden City
DC distance7.1 mi
Nearest rail1.2 mi
Nearest gas pipeline3.7 mi
Nearest fiber route97.8 mi
County hazard (FEMA NRI)Relatively High (35)
DC tax incentiveYes (sales_tax_exemption)
Commercial electricity15.40¢/kWh
Industrial electricity27.43¢/kWh
Cooling degree days700
Heating degree days6,100
Land price / acre$62,463
See all datacenter sites in Nassau County →

Incentive detail: Excelsior Jobs Program tax credits; IDA property tax abatements (PILOT); Empire State Digital Gaming.

Full DC Readiness breakdown

All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.

Power availability20%
72
Speed to power15%
26
Fiber connectivity12%
92
Energy cost10%
59
Water risk8%
93
Natural hazard8%
40
Buildability7%
95
Labor market4%
50
DC cluster4%
80
Land / acreage3%
45
Construction cost3%
53
Gas pipeline2%
88
Tax incentive2%
100
Climate / cooling2%
90

Nearby comparable sites

Other scored datacenter candidate sites in Nassau County, ranked by DC Readiness.

Sites near Greenfield (DUFFY AVENUE CONVERTER STATION)
SiteTypeVoltageCapacityQueue waitScore
NEWBRIDGE ROADSubstation-Adjacent345 kV600 MW3.5 yrs72.6
EAST GARDEN CITYSubstation-Adjacent345 kV600 MW3.5 yrs72.0
NORTHPORTSubstation-Adjacent138 kV100 MW3.5 yrs66.2
TAP136404Substation-Adjacent138 kV100 MW3.5 yrs65.6
E F BARRETTSubstation-Adjacent138 kV100 MW3.5 yrs65.2
UNKNOWN129921Substation-Adjacent138 kV100 MW3.5 yrs65.2
RULAND ROADSubstation-Adjacent138 kV100 MW3.5 yrs65.1
GlenwoodBrownfield—228 MW3.5 yrs64.8

Dataset updated . Screening estimates derived from public data sources.

Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.

Go deeper than the public screen

This page shows a public slice of the GridCensus dataset for Greenfield (DUFFY AVENUE CONVERTER STATION), Nassau County. 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.

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