Greenfield (TAP140350 - UNKNOWN144394)
GreenfieldSt. Lawrence County, New York · NYISO
At a glance
Greenfield (TAP140350 - UNKNOWN144394) is a greenfield datacenter candidate site in St. Lawrence County, New York, scoring 50.2/100 DC Readiness — 68th of 94 scored sites in the county. Its nearest substation is TAP140350. It sits in the NYISO grid region and the NIAGARA MOHAWK POWER CORP. service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
First statewide moratorium (2026): 1-yr hold on certain permits for large DCs + impact study.
Moratorium/permit hold targets large datacenters.
Incentive detail: Excelsior Jobs Program tax credits; IDA property tax abatements (PILOT); Empire State Digital Gaming.
Site location
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How does Greenfield (TAP140350 - UNKNOWN144394) compare with other sites in St. Lawrence County?
Greenfield (TAP140350 - UNKNOWN144394) ranks 68th of 94 scored candidate sites in St. Lawrence County. Its 50.2/100 is roughly in line with the county average of 53.5. It is roughly in line with the New York average of 54.0 and roughly in line with the national average of 53.2.
Against the New York average, its strongest sub-score is natural hazard (65 vs 64) and its weakest is fiber connectivity (66 vs 76). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (TAP140350 - UNKNOWN144394) to power, fiber and other datacenters?
The nearest mapped substation, TAP140350, is the closest grid connection point on record and operates at 115 kV. The nearest located transmission bottleneck is COLTON 115 FLATROCK 115 1 (NYISO), 15 miles away. For connectivity, the nearest internet exchange facility is LogInToUs, Inc. at 51 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Old Main, 15.1 miles away.
What are the flood, water and hazard risks at Greenfield (TAP140350 - UNKNOWN144394)?
At the county level, FEMA's National Risk Index rates St. Lawrence County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in St. Lawrence County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MASSENA | Substation-Adjacent | 765 kV | 1,000 MW | 4.3 yrs | 65.1 |
| City of Ogdensburg | Brownfield | 115 kV | 1 MW | 4.3 yrs | 59.3 |
| TAP140335 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.5 |
| UNKNOWN130198 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.4 |
| TAP140319 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 57.3 |
| UNKNOWN125639 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 56.8 |
| UNKNOWN127601 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 56.7 |
| TAP140337 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 56.7 |
Greenfield (TAP140350 - UNKNOWN144394): common questions
What is the DC Readiness score of Greenfield (TAP140350 - UNKNOWN144394)?
Greenfield (TAP140350 - UNKNOWN144394) scores 50.2/100 on the GridCensus DC Readiness scale, rated fair. It ranks 68th of 94 scored sites in St. Lawrence County. The St. Lawrence County average is 53.5 and the New York average is 54.0.
What is the nearest substation to Greenfield (TAP140350 - UNKNOWN144394)?
The nearest mapped substation is TAP140350, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves Greenfield (TAP140350 - UNKNOWN144394)?
NIAGARA MOHAWK POWER CORP. (investor owned) holds the retail service territory that contains the site; its holding company is NATIONAL GRID GROUP PLC.
What grid region is Greenfield (TAP140350 - UNKNOWN144394) in?
Greenfield (TAP140350 - UNKNOWN144394) is in the NYISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Greenfield (TAP140350 - UNKNOWN144394) from an internet exchange?
The nearest internet exchange facility is LogInToUs, Inc., about 51 miles away; 10 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Greenfield (TAP140350 - UNKNOWN144394), St. Lawrence County, NY”, https://gridcensus.com/datacenter-sites/new-york/st-lawrence-county/greenfield-tap140350-unknown144394-e2b96023 (data as of October 10, 2026).
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.
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