DUFFY AVENUE CONVERTER STATION
Substation-AdjacentNassau County, New York · NYISO
DUFFY AVENUE CONVERTER STATION is a substation-adjacent datacenter candidate site in Nassau County, New York, interconnecting through NYISO. It screens at 69.8/100 DC Readiness with a catalogued 1,000 MW of candidate capacity and a 4.9 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
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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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 Nassau County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| SHORE RD | Substation-Adjacent | 345 kV | 600 MW | 4.9 yrs | 68.8 |
| EAST GARDEN CITY | Substation-Adjacent | 345 kV | 600 MW | 4.9 yrs | 67.2 |
| NEWBRIDGE ROAD | Substation-Adjacent | 345 kV | 600 MW | 4.9 yrs | 67.0 |
| EC Near Plant No 2 Freeport | Greenfield | — | — | 3.5 yrs | 62.1 |
| TAP141012 | Substation-Adjacent | 138 kV | 100 MW | 4.9 yrs | 61.2 |
| EC Near Plant No 2 Freeport | Greenfield | — | — | 3.5 yrs | 61.0 |
| EC Near Glenwood | Greenfield | — | — | 3.5 yrs | 61.0 |
| EC Near E F Barrett | Greenfield | — | — | 3.5 yrs | 61.0 |
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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